WO2014017493A1 - ワクチン - Google Patents
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- WO2014017493A1 WO2014017493A1 PCT/JP2013/069935 JP2013069935W WO2014017493A1 WO 2014017493 A1 WO2014017493 A1 WO 2014017493A1 JP 2013069935 W JP2013069935 W JP 2013069935W WO 2014017493 A1 WO2014017493 A1 WO 2014017493A1
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Definitions
- the present invention relates to a nucleic acid for vaccine, a vector containing the nucleic acid, Bombyx mori containing the vector, and a method for producing a vaccine using them.
- HA hemagglutinin
- NA neuraminidase
- hepatitis C virus not only causes acute hepatitis symptoms due to its infection, but also plays a major negative role in the development of chronic hepatitis, subsequent cirrhosis, and subsequent development of liver cancer.
- viral hepatitis There are two types of viral hepatitis: those that spread by oral infection and those that are transmitted through blood. The latter is represented by hepatitis B virus and hepatitis C virus.
- vaccines have become available for hepatitis B virus, but for hepatitis C, although there has been significant progress in chemotherapy, there is no definitive treatment effective for all virus strains. Despite vigorous research, the current situation is that there are no vaccines available for practical use.
- the causative virus of Japanese encephalitis was a virus isolated in Japan in 1935, and many patients occurred in Japan at that time. After that, vaccination started in 1954, the number of patients decreased dramatically, and 10 or less patients have been reported annually since 1992. However, the virus has not disappeared from Japan.
- Japanese encephalitis virus is thought to infect humans from pigs through mosquitoes, but even today, many pig sera in Japan are positive for anti-Japanese encephalitis virus antibodies. Also, if you look overseas, 35,000-50,000 patients occur annually, mainly in Asia, of which 10,000-15,000 die, and it is important to take measures. Infectious diseases.
- the vaccine currently used in Japan was inoculated in 2009 and is said to have fewer side effects than previous vaccines. However, in 2012, two deaths after vaccination were reported. Considering the above situation, it is clear that the rapid development of an inexpensive vaccine with few side effects is necessary.
- Japan is an exceptionally rare country with no rabies, along with the UK, Australia, New Zealand, Taiwan, Sweden, etc. There are outbreaks in other countries, with 30,000-50,000 deaths annually. Rabies virus can propagate in many wild animals, and immunity to wild animals is necessary to completely prevent rabies. Live vaccines using recombinant vaccinia virus have gained attention and are attracting attention. However, although no problems have been reported at present, the possibility that the introduction of live vaccines into nature will produce unpredictable results cannot be denied. Development of a cheap and effective oral inactivated vaccine is desired.
- West Nile virus was first isolated in 1935 in Kenya. This viral infection ring is established between birds and mosquitoes, and sometimes mosquitoes infect humans. The rate of symptoms in infected humans is about 80%, but about 1 out of every 150 patients presents with severe encephalitis and meningitis, and 3-15% of severe patients die. Until the epidemic in New York occurred in the summer of 1999, the Western Hemisphere was not invaded. Since then, almost all of the United States has been infected, and there are concerns about invasion of Japan. In the US, between 1999 and 2012, 36,500 patients were confirmed and 1,500 people died. Mosquitoes that already exist in Japan are also considered to be able to carry the virus, and it is not strange to be able to invade Japan at any time. There is a need for the development of an effective vaccine as soon as possible.
- the fertilized eggs of 10-11 days old are traditionally used for the production of influenza vaccines.
- Advances in science and technology today have made it possible to produce cultured cells in MDCK or VERO.
- Of particular interest is the ability to produce the desired protein for influenza vaccine in yeast or silkworm (Bombux moly) individuals or in the cultured cells of Bonbux moly by genetic manipulation techniques using various vectors. It has become.
- the present inventors succeeded in producing a large amount of H5 avian influenza virus HA protein in Bombux Mori.
- HA hemagglutinin
- H5N1 A / HK / 483/97 influenza RNA virus isolated from humans in Hong Kong in 1997, and this was cloned into an Escherichia coli plasmid.
- DNA encoding HA protein for influenza vaccine production was further recombined into a baculovirus transfer vector to produce vaccine protein.
- the hemagglutination activity (HA activity) of the recombinant baculovirus-infected Bombus mori produced by this method showed a value of 8,192 on the fifth day of infection.
- the virus liquid produced from one growing chicken egg is approximately 10 ml
- the total HA activity is 10,240.
- the average value of total HA activity in 15 ml of HA protein solution produced by one Bombux Mori was 122,800, and the production ratio was about 12 times as high. This is the expression efficiency according to the conventional technology in which HA of natural highly pathogenic avian influenza virus was produced with a baculovirus vector without changing the design of DNA.
- an object of the present invention is to provide a nucleic acid for a vaccine, a vector containing the nucleic acid, a Bombux Mori containing the vector, and a method for producing a vaccine using them.
- the present inventors have intensively studied, for the first time, that by using a codon-optimized nucleic acid sequence for expression in Bombux Mori, the titer of the vaccine protein produced by Bombux Mori is significantly increased.
- the headline and the present invention were completed.
- the present invention is as follows: [1] a nucleic acid comprising a nucleic acid sequence of the virus codon-optimized for expression in Bombyx Mori to produce a vaccine against the virus in Bombyx Mori [2] The nucleic acid according to [1], wherein the virus is selected from the group consisting of influenza virus, hepatitis C virus, Japanese encephalitis virus, rabies virus, West Nile virus, MERS coronavirus, and foot-and-mouth disease virus, [3] The nucleic acid according to [2], wherein the virus is an influenza A virus, [4] The nucleic acid according to [3], wherein the virus is selected from the group consisting of H5 type and H7 type, [5] The nucleic acid according to [4], wherein the nucleic acid sequence encodes the HA protein of influenza virus, [6] The nucleic acid according to [5], wherein the nucleic acid sequence has an attenuated gene modification, [7] The nucleic acid according to [1
- nucleic acid according to [2], wherein the virus is hepatitis C virus
- the nucleic acid according to [10], wherein the nucleic acid sequence is SEQ ID NO: 15, [12]
- a method for producing the vaccine according to [19] A vaccine comprising the polypeptide according to [16] or produced according to the production method according to [17] or [18], for vaccination of an animal against viral infection, [20]
- a method for inoculating an animal with a vaccine against viral infection comprising the polypeptide according to [16] or effective according to the production method according to [17] or [18]
- Administering an amount to said animal [23] A method for inducing an immune response against a virus in an animal, comprising the polypeptide according to [16], or an effective amount of a vaccine produced by the production method according to [17] or [18] Is administered to said animal.
- nucleic acid for vaccine a nucleic acid for vaccine, a vector containing the nucleic acid, Bombux Mori containing the vector, and a method for producing a vaccine using them are provided.
- FIG. 3 shows an optimized codon correspondence table based on the most frequently used gene codons shown in FIG. Serine (S) is UCA and its complementary strand is TGA, which is a stop codon. Therefore, the complementary strand of serine serves as a stop codon and no large frame appears in the complementary strand.
- the correspondence between the avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown. Based on the base sequence of HA gene of highly pathogenic avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1), optimization of FLAG tag at C-terminus, codon usage of Bombux Mori cells The base sequence of the synthetic gene was determined. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown.
- N1> ⁇ is one large coding frame, but in other frames, there are many bars that stick out below, and even if expressed, a large protein cannot be made.
- N1 ⁇ , N2 ⁇ and N3 ⁇ from the fourth to the top from the bottom are the results of analyzing the coding frame of the complementary strand. Even if any frame is expressed, a large protein cannot be made.
- the alignment of the codon optimized HA gene DNA sequence and the HA gene cDNA sequence of avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) is shown.
- Query indicates a codon-optimized HA gene DNA sequence (coding region sequence excluding FLAG TAG), and Sbjct indicates avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) (HA coding region sequence). Parts having the same sequence are indicated by *, and-indicates a gap. Although the homology is very low at 77%, it is designed to express the same amino acid sequence except that the highly toxic sequence is modified and deleted. The alignment between the codon optimized HA gene DNA sequence and the avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) virus HA gene cDNA sequence is shown.
- Query indicates a codon-optimized HA gene DNA sequence (coding region sequence excluding FLAG TAG), and Sbjct indicates avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) (HA coding region sequence). Parts having the same sequence are indicated by *, and-indicates a gap. Although the homology is very low at 77%, it is designed to express the same amino acid sequence except that the highly toxic sequence is modified and deleted.
- the expression confirmation by Western blotting of the HA protein from the codon-optimized HA gene of avian influenza virus A / chicken / tufted duck / Fukushima / 16/2011 (H5N1) produced using Bombux Mori is shown.
- FIG. 6 shows the HI activity of various HI antibodies against various influenza viruses in chickens by HA solution prepared using pBm-8HA. Reacted extensively with natural viruses. The HA activity of each fraction of the sucrose density gradient is shown. The HA activity was distributed at a lower density position than the position where the natural virus settled. The electron microscope image in a sucrose density gradient fraction is shown. Many virus-like particles having a diameter of 60 to 120 nm were observed.
- the correspondence between the avian influenza virus A / chicken / Sukabumi / 2008 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown. Based on the base sequence of the HA gene of avian influenza virus A / chicken / Sukabumi / 2008 (H5N1), considering the introduction of the FLAG tag at the C-terminal and the optimization of codon usage in Bombux Mori cells, the base sequence of the synthetic gene Designed. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the avian influenza virus A / chicken / Sukabumi / 2008 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown.
- the base sequence of the synthetic gene Based on the base sequence of the HA gene of avian influenza virus A / chicken / Sukabumi / 2008 (H5N1), considering the introduction of the FLAG tag at the C-terminal and the optimization of codon usage in Bombux Mori cells, the base sequence of the synthetic gene Designed. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the avian influenza virus A / chicken / Sukabumi / 2008 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown. The box indicates the attenuated site.
- the base sequence of the synthetic gene Based on the base sequence of the HA gene of avian influenza virus A / chicken / Sukabumi / 2008 (H5N1), considering the introduction of the FLAG tag at the C-terminal and the optimization of codon usage in Bombux Mori cells, the base sequence of the synthetic gene Designed. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the avian influenza virus A / chicken / Sukabumi / 2008 (H5N1) codon optimized HA gene DNA sequence and amino acid sequence is shown. A surrounding line shows a FLAG tag.
- Sukabumi Codon-optimized HA gene-infected Bombus mori. Arrows indicate specific bands.
- Core protein DNA sequence 1 to 573, E1 protein: 574 to 1149, E3 protein: 1150 to 2238, FLAG tag: 2239 to 2262.
- Core protein DNA sequence 1 to 573, E1 protein: 574 to 1149, E3 protein: 1150 to 2238, FLAG tag: 2239 to 2262.
- Core protein DNA sequence 1 to 573, E1 protein: 574 to 1149, E3 protein: 1150 to 2238, FLAG tag: 2239 to 2262.
- the correspondence between the hepatitis C virus codon optimized Core-E1-E2 fusion protein DNA sequence and amino acid sequence is shown.
- Core protein DNA sequence 1 to 573, E1 protein: 574 to 1149, E3 protein: 1150 to 2238, FLAG tag: 2239 to 2262.
- the correspondence between the hepatitis C virus codon optimized Core-E1-E2 fusion protein DNA sequence and amino acid sequence is shown.
- Core protein DNA sequence 1 to 573, E1 protein: 574 to 1149, E3 protein: 1150 to 2238, FLAG tag: 2239 to 2262.
- the confirmation of expression by Western blotting of the Core-E1-E2 fusion protein from the Hepatitis C virus codon-optimized Core-E1-E2 fusion protein gene produced using Bombux Mori is shown. Marker: molecular weight marker. Control: Non-infectious Bonbux Mori. HCV: Codon-optimized Core-E1-E2 fusion protein gene-infected Bonbux Mori. Arrows indicate specific bands. The expression confirmation by Western blotting of Core-E1-E2 fusion protein produced using Bombux Mori is shown.
- the correspondence between the avian influenza virus A / Shanghai / 02/2013 codon optimized HA gene DNA sequence and amino acid sequence is shown. Based on the base sequence of the HA gene of avian influenza virus A / Shanghai / 02/2013 (H7N9), considering the introduction of the FLAG tag at the C-terminal and the optimization of codon usage of Bombux Mori cells, the base sequence of the synthetic gene Designed. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the avian influenza virus A / Shanghai / 02/2013 codon optimized HA gene DNA sequence and amino acid sequence is shown. The box indicates the expected mutation.
- the base sequence of the synthetic gene Designed.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the avian influenza virus A / Shanghai / 02/2013 codon optimized HA gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene Designed.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the avian influenza virus A / Shanghai / 02/2013 codon optimized HA gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the correspondence between the Japanese encephalitis virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene Designed.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- PreM / M protein DNA sequence 1 to 501; E protein: 502 to 2001; FLAG tag: 2002 to 2025.
- the correspondence between the Japanese encephalitis virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- PreM protein gene M protein gene, and E protein gene, considering the introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells, the base sequence of the synthetic gene Designed.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- PreM / M protein DNA sequence 1 to 501; E protein: 502 to 2001; FLAG tag: 2002 to 2025.
- the correspondence between the Japanese encephalitis virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- PreM protein gene Based on the base sequences of the Japanese encephalitis virus PreM protein gene, M protein gene, and E protein gene, considering the introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells, the base sequence of the synthetic gene Designed. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- PreM / M protein DNA sequence 1 to 501; E protein: 502 to 2001; FLAG tag: 2002 to 2025.
- the correspondence between the Japanese encephalitis virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- PreM protein gene DNA sequence 1 to 501; E protein: 502 to 2001; FLAG tag: 2002 to 2025.
- FIG. 6 shows expression confirmation by Western blotting of PreM-ME fusion protein from Japanese encephalitis virus codon-optimized PreM-ME fusion protein gene produced using Bombux Mori. Marker: molecular weight marker. Control: Non-infectious Bonbux Mori.
- JEV Codon-optimized PreM-ME fusion protein gene-infected Bombux Mori. Arrows indicate specific bands.
- the correspondence between the rabies virus codon optimized G protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the rabies virus codon optimized G protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the rabies virus codon optimized G protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the rabies virus codon optimized G protein gene DNA sequence and amino acid sequence is shown.
- a surrounding line shows a FLAG tag.
- the base sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminal and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the West Nile virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the West Nile virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the West Nile virus codon optimized PreM-ME fusion protein gene DNA sequence and amino acid sequence is shown. Based on the nucleotide sequence of the E protein gene of West Nile virus, the nucleotide sequence of the synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells. The amino acid sequence predicted from the base sequence of the synthetic gene is also shown. The correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- S protein spike glycoprotein
- the nucleotide sequence of a synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of a synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of the S protein gene of MERS coronavirus was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of a synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- the nucleotide sequence of a synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the MERS coronavirus codon optimized spike glycoprotein (S protein) gene DNA sequence and amino acid sequence is shown.
- S protein spike glycoprotein
- the nucleotide sequence of a synthetic gene was designed in consideration of introduction of a FLAG tag at the C-terminus and optimization of codon usage of Bombux Mori cells.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the correspondence between the foot-and-mouth disease virus codon optimized VP4-VP2-VP3-VP1-2A-3C fusion protein gene DNA sequence and amino acid sequence is shown.
- nucleotide sequences of VP4, VP2, VP3, VP1, 2A, and 3C protein genes of foot-and-mouth disease virus considering the introduction of the FLAG tag at the N-terminal and the optimization of codon usage of Bombux Mori cells, the nucleotide sequence of the synthetic gene Designed.
- the amino acid sequence predicted from the base sequence of the synthetic gene is also shown.
- the nucleic acid according to the present invention includes a viral nucleic acid sequence that is codon optimized for expression in Bombux Mori.
- the codon optimization uses a correspondence table (FIG. 2) of amino acid sequences and gene sequences created based on Bombus Mori's codon usage (FIG. 1) to replace the target nucleic acid sequence.
- the Ser sequence is UCA (most frequently used in Bombux Mori), and the complementary strand is used.
- UCA most frequently used in Bombux Mori
- the virus targeted by the vaccine according to the present invention is not particularly limited, and examples thereof include influenza virus hepatitis C virus, Japanese encephalitis virus, rabies virus, West Nile virus, MERS coronavirus, and foot-and-mouth disease virus.
- influenza viruses influenza A virus is preferable, and H5 and H7 types are more preferable.
- genotype 1a, 1b, 2a, 2b or 3a is preferred.
- the viral nucleic acid sequence according to the present invention encodes any viral protein as long as it can serve as a vaccine.
- the viral nucleic acid sequence preferably encodes the HA protein.
- the viral nucleic acid sequence preferably encodes a core protein, an E1 protein, an E2 protein, or a combination thereof.
- the viral nucleic acid sequence preferably encodes a PreM protein, M protein, and / or E protein.
- the viral nucleic acid sequence preferably encodes a G protein.
- the viral nucleic acid sequence preferably encodes a PreM protein, M protein and / or E protein.
- the viral nucleic acid sequence preferably encodes a spike glycoprotein (S protein).
- the nucleic acid sequence of the virus preferably encodes a VP4, VP2, VP3, VP1, 2A, and / or 3C protein.
- the nucleic acid sequence of the virus according to the present invention may have an attenuated gene modification. Attenuation can be accomplished by any modification known to those skilled in the art. For example, in the case of the HA protein of influenza virus, the sequence of the cleavage site that joins HA1 and HA2 molecules that control pathogenicity is modified. In one embodiment, the amino acid sequence represented by SEQ ID NO: 7 is substituted with the amino acid sequence represented by SEQ ID NO: 8 in the HA protein.
- the nucleic acid according to the present invention is preferably a nucleic acid comprising or consisting of the nucleic acid sequence of SEQ ID NO: 4, 12, 15, 18, 21, 24, 27, 30, or 33.
- the vaccine is produced by Bombux Mori.
- the vaccine production method using Bombux Mori can be performed using any method known to those skilled in the art.
- the nucleic acid of the present invention is introduced into Bombux Mori and the viral protein encoded by the nucleic acid sequence of the virus is expressed.
- the method for introducing a nucleic acid is not particularly limited, and for example, it is carried out by inoculating a Bombax mori with a recombinant baculovirus containing the nucleic acid of the present invention.
- the present invention is a vector comprising a nucleic acid according to the present invention.
- the vector of the present invention is any vector capable of expressing a protein encoded by a nucleic acid.
- the vector of the present invention may be directly introduced into Bombux Mori.
- the vector of the present invention is a baculovirus transfer vector.
- the present invention is a recombinant baculovirus produced using the vector according to the present invention.
- the method of producing a recombinant baculovirus can be performed using any method known to those skilled in the art.
- the recombinant baculovirus of the present invention can be produced by simultaneously introducing the vector of the present invention and DNA extracted from baculovirus into Bombux Mori cells.
- the present invention is a Bombux Mori containing a nucleic acid, vector, or recombinant baculovirus according to the present invention.
- the vector or the recombinant baculovirus may exist independently of the genome of Bonbux Mori, or is incorporated into the genome of Bonbucus Mori. Also good.
- the present invention is a polypeptide consisting of an amino acid sequence encoded by a nucleic acid according to the present invention.
- the present invention is a method for producing a vaccine using a nucleic acid, a vector, a recombinant baculovirus, or Bombux Mori according to the present invention.
- the method for producing a vaccine according to the present invention comprises the following steps: 1) a step of obtaining a nucleic acid or vector according to the present invention 2) a step of introducing the nucleic acid, vector or recombinant baculovirus according to the present invention into Bombux Mori; and 3) a step of recovering a protein from Bombux Mori. .
- Introduction of the nucleic acid, vector or recombinant baculovirus of the present invention into Bombux Mori can be performed using any method known to those skilled in the art. Preferably, it can be introduced using baculovirus. There is no particular limitation on the timing of introduction of the nucleic acid, vector, or recombinant baculovirus of the present invention into Bombux Mori. Preferably, the introduction period is the last stage.
- Bombux Mori is homogenized in an isotonic buffer solution, and then recovered using an immobilized red blood cell or a sialic acid column (fetuin column).
- the present invention is a polypeptide according to the present invention or a vaccine produced according to the production method of the present invention for vaccination of animals against viral infection.
- the vaccine of the present invention has a virus-like particle structure.
- the virus-like particle structure is closely related to the virus particle in the form of densely arranged HA spikes on the surface of the particle having a diameter of around 50 to 150 nm, but it is naturally non-pathogenic.
- the virus-like particle structure is spherical with spikes.
- the virus-like particle has a particle size of 60 nm to 120 nm. An example of the virus-like particle structure of the present invention is shown in FIG.
- the present invention provides a method for inoculating an animal with a vaccine against viral infection, comprising an effective amount of a vaccine comprising a polypeptide according to the present invention or produced according to a production method according to the present invention. Is administered to said animal.
- the present invention provides a method for inducing an immune response against a virus in an animal, comprising a polypeptide according to the invention or produced by a production method according to the invention.
- a method comprising administering an amount to said animal.
- the animal according to the present invention refers to any animal that can acquire sufficient humoral immunity or cellular immunity against the virus by vaccination.
- the animal according to the present invention is a vertebrate, more preferably a human, bird, pig, or horse. Most preferably, it is a human.
- An effective amount of vaccine refers to an amount sufficient to achieve a biological effect such as inducing sufficient humoral immunity or cellular immunity against the virus.
- Administration methods also include inhalation, intranasal, oral, parenteral (eg, intradermal, intramuscular, intravenous, intraperitoneal, and subcutaneous administration). The effective amount and method of administration may depend on the age, sex, condition, weight of the human being administered.
- influenza vaccine in general, a vaccine containing 15 ⁇ g or more of HA protein per strain in 1 ml, 0.25 ml subcutaneously for those who are 6 months or older and younger than 3 years, and those who are 3 years old or older and younger than 13 years Inject 0.5 ml subcutaneously twice, approximately 2-4 weeks apart. For those 13 years and older, 0.5 ml is injected subcutaneously once, or twice at approximately 1 to 4 week intervals.
- Example 1 Design of DNA for development of influenza vaccine suitable for production in Bombux Mori based on HA gene information of avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1)
- amino acid sequence (SEQ ID NO: 2) of the hemagglutinin (HA) protein of avian influenza virus A / tufted duck / Fukushima / 16/2011 (H5N1) is obtained from Genbank (URL: http: //www.ncbi.nlm.nih. gov / genbank /) Accession No. Predicted from the gene sequence registered in BAK24078 (SEQ ID NO: 1).
- Arg-Glu- Arg is presumed to be related to a highly pathogenic - Arg - Lys - Arg sequence (SEQ ID NO: 7) Arg-Glu- Thr - Arg sequence (SEQ ID NO: 8) And a FLAG tag sequence (SEQ ID NO: 5) consisting of Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys was added to the C-terminus, and the attenuated HA protein amino acid sequence (SEQ ID NO: 3) was added. Designed.
- the resulting Bonbux-Mori cocoon emulsion was sonicated with a sonicator (UR-20P, manufactured by Tommy Seiko) for 5 minutes, and fixed chicken erythrocytes were added thereto to recover HA protein. Furthermore, it was possible to purify to 95% or more at the protein level by purifying with DEAE ion exchange chromatography. Expression of the purified protein was confirmed by Western blotting (primary antibody: anti-FLAG mouse monoclonal antibody, secondary antibody: anti-mouse IgG rabbit polyclonal antibody). As shown in FIG. 6, a band was confirmed around 65 kDa.
- Influenza viruses have the property of agglutinating when mixed with erythrocytes of various animals, which is called hemagglutination, where hemagglutinin (HA) on the surface of the virus binds to the glycans of the erythrocytes. By making large aggregates by cross-linking erythrocytes. By using this property, the virus concentration (HA activity) contained in the stock solution can be calculated by investigating how far the virus aggregates when serially diluted, so it is used for quantification of influenza virus.
- HA activity hemagglutinin
- HA value as the HA aggregation activity is expressed by the magnification of the dilution point before the day circle is formed.
- the obtained HA protein solution was evaluated under the above conditions.
- the HA activity was 2,097,152.
- This value of the amount of HA activity of one recombinant Bombus mori was expressed in 1998 by the highly pathogenic avian influenza virus A / HK / 483/97 (H5N1) HA gene derived from humans. It is about 11.4 times the HA activity of 307,160 of one Bonbux Mori at the time, and an extraordinary amount of HA activity of about 340 times the HA activity 10,240 produced from one growing chicken egg It will be an increase.
- Chicken immunization with HA protein solution Chickens were immunized using the above HA protein solution. Chickens were inoculated with leg muscles twice at 16-day intervals with 0.5 ml of HA protein solution with HA activity adjusted between 4,096 and 8,192. Blood samples were collected from chickens at 33 days, 40 days, 47 days, and 50 days after the first inoculation.
- HI activity erythrocyte aggregation inhibitory activity of each chicken serum was examined by the following method. First, using a 96-well plate, a 1/2 serial dilution series of serum containing 25 ⁇ l of each well was prepared. Next, 25 ⁇ l of the HA protein (prepared to 8 HA with PBS) was added to each well. After allowing the plate to stand at room temperature for 30 minutes, 50 ⁇ l of 0.5% / PBS chicken erythrocytes were added to each well.
- HI activity against various influenza viruses was examined using chicken serum 40 days after the first inoculation. HI activity was measured under the same conditions as described above using each virus of A / chiken / Legok / 2004 (H5N1) and A / chiken / West Java / 2009 (H5N1). The results are shown in FIG. Chicken serum showed HI activity against all viruses.
- Fractionation of HA protein solution by sucrose density gradient The HA protein solution was fractionated by a sucrose density gradient method. The HA activity of each fraction was examined by the same method as described above. The result is shown in FIG. Fraction 4 which has a buoyant density of 1.18 g / l of the native virus showed no HA activity. On the other hand, HA activity was observed in fractions 7 to 9 showing a smaller floating density.
- FIG. 1 A virus particle-like structure having a spherical shape with spikes and a particle size of 60 nm to 120 nm was observed. Natural viruses have a spherical shape of 60 to 150 nm, an elongated fibrous shape of 100 to 1000 nm, and a circular shape of 80 to 200 nm in principle. On the other hand, as shown in FIG.
- the HA protein derived from Bombus mori shows various forms as in the case of the natural virus, the spherical one is 60 to 150 nm, the fibrous one is about 200 nm, and the circular one is 60 to 150 nm. This study revealed for the first time that it was shaped. This morphological feature is considered to be reflected in the strong immunity of HA protein that has not been seen so far.
- the activity level of the HA protein of avian influenza virus A / tufted duck / Fukushima / 16/2011 increased due to Bonbux Mori's changes in DNA design based on genetic information. It is thought that the genetic manipulation of the synthetic DNA based on it worked beneficially. Furthermore, since the target gene was highly expressed using the bud stage of Bombus mori, it is considered that the obtained vaccine exhibited a virus particle-like structure. In this way, with the background of genetic information, new vaccine production methods utilizing DNA design changes and synthesis are expected to be used in multiple fields in the future. In conclusion, the first of the significance of vaccine production using Bonbux Mori using the redesigned DNA is to produce a vaccine amount of 340 developing chicken eggs in one of the Bumbux Mori pupae. It is.
- Example 2 Design of DNA for development of influenza vaccine suitable for production in Bombus Mori based on HA gene information of avian influenza virus A / chicken / Sukabumi / 2008 (H5N1)
- Viruses often mutate with time, including humans and animals, so anxiety remains with the avian influenza virus A / tufted duck / Fukushima / 16/2011 strain alone. Therefore, based on the amino acid sequence information (SEQ ID NO: 9) predicted from the HA gene sequence (SEQ ID NO: 9) of the avian influenza virus A / chicken / Sukabumi / 2008 (H5N1) isolated in Indonesia in 2008, Example 1 and Similarly, a vaccine development DNA for influenza virus was designed (SEQ ID NO: 12), and the corresponding amino acid sequence (SEQ ID NO: 11) is shown in Fig. 10. Similar to Example 1, the baculovirus recombination containing the development DNA was performed.
- the body was ingested into a Bombyx Mori sputum to synthesize and recover the HA protein, and expression was confirmed by Western blotting (Fig. 11) .As a result of evaluating the HA activity, the amount of HA activity per head was 419, 430.
- Example 3 Design of DNA for hepatitis C virus vaccine development suitable for production in Bombux Mori
- the particle structure of hepatitis C virus is covered with a lipid layer containing E1 and E2 glycoproteins, and a protein called a nuclear protein or core protein and a viral gene are contained inside the particle.
- E1 protein and E2 protein play an important role for the virus to initiate infection, and conversely, E1 protein and E2 protein are also infection-protecting antigens, and thus vaccine proteins It also has important functions.
- a test vaccine was made with E1 protein and E2 protein, and the effect of chimpanzee was mild but the effect of mild infection was insufficient. However, in order to expect a more sufficient preventive effect, higher concentrations of E1 protein and E2 protein are required.
- Nucleotide sequence design of codon-optimized Core-E1-E2 fusion protein gene Therefore, in order to develop a hepatitis C virus vaccine, the present inventors have developed the hepatitis C virus core protein-E1 protein-E2 protein We designed genetic information for the expression of fusion proteins.
- the fusion protein was designed here because it was expected that a virus particle-like protein could be synthesized by simultaneous expression.
- the FLAG tag sequence (SEQ ID NO: 5) is added to the amino acid sequence (SEQ ID NO: 13) from the Core protein to the E1 protein and E2 protein in the amino acid sequence of the HCV gene registered in Genbank under Accession No. ACK28185.
- FIG. 12 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- Reference Example 1 Avian influenza virus A / Shanghai / 2/2013 (H7N9) Based on HA gene information of influenza virus, design of DNA for development of influenza vaccine suitable for production in Bombux Mori
- Example 15 the recombinant baculovirus containing the above-mentioned DNA for development was ingested into Bombyx moly sputum, and HA protein was synthesized and recovered to confirm expression (FIG. 15). The HA activity is evaluated in the same manner as in Example 1.
- Reference Example 2 Design of DNA for development of Japanese encephalitis virus vaccine suitable for production in Bombux Mori
- Japanese encephalitis virus is an encephalitis virus mainly transmitted by Culex mosquitoes and is currently prevalent in Southeast Asia, India and China. In order to prevent this, a mouse brain infected with the same virus has been used as a vaccine. Recently, a virus for a vaccine in a cultured cell has been cultured. However, new vaccine development is required in order to enhance the immunity of vaccines, reduce side effects, and reduce production costs, and there are great expectations for quality improvement.
- Japanese encephalitis virus codon optimized PreM-ME fusion protein gene nucleic acid sequence design Therefore, in order to develop a Japanese encephalitis virus vaccine, the present inventors designed gene information for E protein expression of Japanese encephalitis virus did.
- the FLAG tag sequence (SEQ ID NO: 5) is added to the amino acid sequence (SEQ ID NO: 19) from the preM protein in the amino acid sequence registered in Genbank under Accession No. ABQ52691 to the M protein and E protein.
- the amino acid sequence of the Japanese encephalitis virus PreM-ME fusion protein that was the basis of the design was obtained (SEQ ID NO: 20).
- FIG. 16 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- Reference Example 3 Design of DNA for the development of a rabies virus vaccine suitable for production in Bombux Mori
- Rabies virus is distributed on a global scale, causing many death hazards, and there is an international demand for the development of an effective, safe, and inexpensive vaccine, but it is not progressing slowly. Therefore, if a vaccine with strong immunity, safety and low cost is developed, the needs are considered to be global.
- Currently used vaccines are derived from the brains of rabbits, goats and mice, and in addition, human diploid cells and chicken embryo cells are used.
- Nucleic acid sequence design of rabies virus codon optimized G protein gene Therefore, the present inventors design gene information for G protein expression of rabies virus in order to develop a rabies virus vaccine.
- the FLAG tag sequence (SEQ ID NO: 5) was added to the amino acid sequence registered in Genbank under Accession No. ABX46657 (SEQ ID NO: 22) to obtain the amino acid sequence of the rabies virus G protein that serves as the basis for nucleic acid design. (SEQ ID NO: 23).
- the nucleic acid sequence of the rabies virus codon optimized G protein was designed in the same manner as in Example 1 (SEQ ID NO: 24).
- FIG. 18 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- Reference Example 4 Design of DNA for development of West Nile virus vaccine suitable for production in Bombus mori
- West Nile virus has spread to the United States, Eastern Europe, and Europe, and is likely to be transmitted to Japan in the near future. In addition to the Carterica ecosystem, it is transmitted from this cycle to humans and to horses. There is no vaccine available yet, but the development of this vaccine is urgent worldwide. Research and development of vaccines is actively conducted in the United States and Europe, but has not been successful. Therefore, if West Nile fever vaccine can be produced in large quantities at low cost, it can be used worldwide.
- FIG. 19 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- Example 2 West Nile virus codon-optimized E protein gene-introduced baculovirus infection
- pBm-8wnvpMME is used to obtain a baculovirus recombinant, which is inoculated into Bonbux Mori cocoons to obtain Bonbux Mori mulberry emulsion .
- Nucleic acid sequence design of MERS coronavirus codon optimized spike glycoprotein (S protein) gene We design genetic information for S protein expression of MERS coronavirus in order to develop a MERS coronavirus vaccine.
- the FLAG tag sequence (SEQ ID NO: 5) is added to the amino acid sequence (SEQ ID NO: 28) registered in Genbank under Accession No. AGN52936 to obtain the amino acid sequence of West Nile virus E protein that serves as the basis for nucleic acid design. (SEQ ID NO: 29).
- the nucleic acid sequence of the MERS coronavirus codon optimized S protein was designed in the same manner as in Example 1 (SEQ ID NO: 30).
- FIG. 20 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- Foot-and-Mouth Disease Virus Codon-Optimized VP4-VP2-VP3-VP1-2A-3C Fusion Protein Gene Nucleic Acid Sequence Design
- VP4-VP2-VP3-VP1-2A to develop a foot-and-mouth disease virus vaccine
- genetic information for -3C fusion protein expression First, the amino acid sequences of VP4, Vp2, VP1, 2A, and 3C proteins in the amino acid sequence predicted from the nucleic acid sequence registered in Genbank under Accession No. HV940030 were linked from the N-terminal side to the C-terminal side.
- a FLAG tag sequence (SEQ ID NO: 5) was added to the amino acid sequence (SEQ ID NO: 31) to obtain an amino acid sequence of a foot-and-mouth disease virus serving as a basis for nucleic acid design (SEQ ID NO: 32).
- SEQ ID NO: 32 Based on the amino acid sequence of this foot-and-mouth disease virus VP4-VP2-VP3-VP1-2A-3C fusion protein, in the same manner as in Example 1, the foot-and-mouth disease virus codon-optimized VP4-VP2-VP3-VP1-2A-3C fusion protein
- a nucleic acid sequence was designed (SEQ ID NO: 33).
- FIG. 21 shows the correspondence between the nucleic acid sequence and amino acid sequence of the designed chimeric synthetic DNA.
- the nucleic acid according to the present invention has the following remarkable effects: 1) Dangerous virus-derived proteins can be obtained by using artificially synthesized DNA without handling dangerous viruses. (P4 and P3 facilities are not required and dangerous viruses are not handled, so there is no possibility that the virus will leak to the outside if it infects humans or adheres to clothes.) 2) Ability to design amino acid sequences with low pathogenicity from the beginning based on bioinformatics. 3) Ability to predict and design future amino acid mutations from the beginning by bioinformatics and evolutionary analysis. 4) The gene sequence is obtained from the amino acid sequence. In the amino acid sequence, for example, in the HA protein, except for the highly toxic site and the FLAG tag, it is exactly the same as the original amino acid sequence.
- the artificially synthesized nucleic acid of the present invention based on a nucleic acid sequence design that is codon-optimized for expression in Bombux Mori is useful for mass production of vaccines as described above.
- SEQ ID NO: 1 A / tufted duck / Fukushima / 16/2011 (H5N1) HA gene DNA sequence of avian influenza virus
- SEQ ID NO: 2 A / tufted duck / Fukushima / 16/2011 (H5N1) HA amino acid sequence of avian influenza virus No.
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Description
このように、これまでの発育鶏卵を使用するワクチン生産の技術には、コスト、生産量の限界があり、さらに、有効成分のHAだけでの生産には、コストと精製技術の大きな問題がある。これを乗り越えるためには、新たなHAタンパク質の量産技術が必要である。
[1]ウイルスに対するワクチンをボンビュクス・モリ(Bombyx mori)で産生するための、ボンビュクス・モリにおける発現にコドン最適化された該ウイルスの核酸配列を含む核酸、
[2]ウイルスが、インフルエンザウイルス、C型肝炎ウイルス、日本脳炎ウイルス、狂犬病ウイルス、西ナイルウイルス、MERSコロナウイルス、および口蹄疫ウイルスからなる群より選択される、[1]に記載の核酸、
[3]ウイルスが、A型インフルエンザウイルスである、[2]に記載の核酸、
[4]ウイルスが、H5型およびH7型からなる群より選択される、[3]に記載の核酸、
[5]核酸配列が、インフルエンザウイルスのHAタンパク質をコードする、[4]に記載の核酸、
[6]核酸配列が、弱毒化遺伝子改変を有する、[5]に記載の核酸、
[7]核酸配列が、配列番号4、配列番号12、配列番号18からなる群より選択される核酸配列である、[1]~[6]のいずれかに記載の核酸、
[8]ウイルスが、C型肝炎ウイルスである、[2]に記載の核酸、
[9]核酸配列が、C型肝炎ウイルスのE1タンパク質、E2タンパク質および/または核タンパク質をコードする、[8]に記載の核酸、
[10]核酸配列が、C型肝炎ウイルスのE1タンパク質、E2タンパク質および核タンパク質をコードする、[8]に記載の核酸、
[11]核酸配列が、配列番号15である、[10]に記載の核酸、
[12]核酸配列が、配列番号4、12、15、18、21、24、27、30、または33である、[2]に記載の核酸、
[13][1]~[12]のいずれかに記載の核酸を含む、ベクター、
[14][13]に記載のベクターを用いて産生された組み換え体バキュロウイルス、
[15][1]~[12]のいずれかに記載の核酸、[13]に記載のベクター、または[14]に記載の組み換え体バキュロウイルスを含む、ボンビュクス・モリ、
[16][1]~[12]のいずれかに記載の核酸がコードするアミノ酸配列からなる、ポリペプチド、
[17][1]~[12]のいずれかに記載の核酸、[13]に記載のベクター、[14]に記載の組み換え体バキュロウイルス、または[15]に記載のボンビュクス・モリを使用する、ワクチンの生産方法、
[18]以下の工程:
1)[1]~[12]のいずれかに記載の核酸、[13]に記載のベクター、または[14]に記載の組み換え体バキュロウイルスを得る工程
2)[1]~[12]のいずれかに記載の核酸、[13]に記載のベクター、または[14]に記載の組み換え体バキュロウイルスをボンビュクス・モリに導入する工程;および
3)ボンビュクス・モリからタンパク質を回収する工程
を含む、[17]に記載のワクチンの生産方法、
[19]ウイルスの感染に対する、動物のワクチン接種のための、[16]に記載のポリペプチドを含むか、または[17]もしくは[18]に記載の生産方法に従って生産される、ワクチン、
[20]ウイルス様粒子構造である、[19]に記載のワクチン、
[21]ウイルス様粒子構造の直径が50nm~150nmである、[20]に記載のワクチン、
[22]ウイルスの感染に対するワクチンを、動物に接種する方法であって、[16]に記載のポリペプチドを含むかまたは[17]もしくは[18]に記載の生産方法に従って生産されるワクチンの有効量を、前記動物に投与することを含む方法、
[23]ウイルスに対する免疫応答を、動物に誘導する方法であって、[16]に記載のポリペプチドを含むかまたは[17]もしくは[18]に記載の生産方法により生産されるワクチンの有効量を、前記動物に投与することを含む方法
である。
1)本発明に係る核酸またはベクターを得る工程
2)本発明に係る核酸、ベクター、または組み換え体バキュロウイルスをボンビュクス・モリに導入する工程;および
3)ボンビュクス・モリからタンパク質を回収する工程
を含む。
2011年に野生のカモで発見された高病原性トリインフルエンザウイルス A/tufted duck/Fukushima/16/2011(H5N1)のHA遺伝子情報を次のように設計変更した。
上記設計したコドン最適化HA遺伝子の配列情報を基に、DNAの全合成をタカラバイオ株式会社に依頼した。合成したコドン最適化HA遺伝子DNAをトランスファーベクターであるpBm-8(バキュロテクノロジー社製)にIn-Fusion法(クロンテック社)を用いて挿入し、pBm-8HAを作製した。
pBm-8HAとバキュロウイルスより抽出したDNAとをボンビュクス・モリ細胞に同時に導入することにより、細胞上清中にワクチン生産用の組換え体バキュロウイルスを得た。この組換え体バキュロウイルスを、ボンビュクス・モリの蛹に接種した。すなわち、ウイルス力価1×108pfu/ml以上のウイルス原液を昆虫細胞用培地 TC-100で10倍に希釈した。この希釈液50μlを脱皮2日目のボンビュクス・モリの蛹腹部に注射により接種し、その後、蛹を26℃のインキュベーターで飼育した。72時間後、氷上で蛹をハサミにより半分に切り開き中腸をピンセットで取り除いた後、ポッター型ホモジナイザーを用い、フェニールチオ尿酸含有PBS中で破砕乳化した。乳化液にPBSを50mlになるように加え、さらに最終0.01%になるようホルマリンを5μl加えてボンビュクス・モリの蛹乳剤を得た。
得られたボンビュクス・モリの蛹乳剤をソニケーター(UR-20P、トミー精工製)で5分間超音波処理し、これに固定ニワトリ赤血球を加えてHAタンパク質を回収した。さらにDEAEイオン交換クロマトグラフで精製することにより、タンパク質レベルで、95%以上に精製することができた。精製タンパク質を、ウェスタンブロッティング(1次抗体:抗FLAGマウスモノクローナル抗体、2次抗体:抗マウスIgGウサギポリクローナル抗体)により発現を確認した。図6に示す様に、65kDa付近にバンドが確認された。
インフルエンザウイルスは様々な動物の赤血球と混和すると凝集する性質があり、これは赤血球凝集反応と呼ばれ、ウイルス表面のヘマグルチニン(Haemagglutinin:HA)が赤血球の糖鎖と結合し、複数の赤血球同士を架橋させて大きな凝集体を作ることによる。この性質を利用して、ウイルスを階段希釈したときにどこまで凝集するかを調べることで、原液に含まれるウイルス濃度(HA活性)を算出できるため、インフルエンザウイルスの定量に用いられる。具体的には、96穴のマイクロプレートを用いて、被検体50μlをPBS(リン酸緩衝生理食塩水)50μlで階段希釈した後に、0.5%に調整したニワトリ赤血球を等量加えてよく混和し、30分~60分間室温に静置する。被検体にHA活性があれば赤血球と凝集塊を形成するが、ウイルスが存在しない場合は、凝集塊ができず、プレートの底に日の丸のように沈んでしまう。この日の丸が形成される前の希釈点の倍率を以て、HA凝集活性としてのHA価を表現する。
得られたHAタンパク質溶液を上記条件で評価した。その結果、HA活性は2,097,152のHA活性を示した。その結果、30頭のボンビュクス・モリ蛹で産生された総HA活性は、2,097,152×50ml=104,857,600となり、蛹1頭当たりのHA活性量は3,495,253となった。組換え体のボンビュクス・モリ1頭のHA活性量のこの値は、1998年にヒト由来の高病原性トリインフルエンザウイルスA/HK/483/97(H5N1)のHA遺伝子をボンビュクス・モリで発現させた時のボンビュクス・モリ1頭の307,160のHA活性のおよそ11.4倍となり、さらに1個の発育鶏卵から産生されるHA活性10,240の、およそ340倍という驚異的なHA活性量の増大ということになる。
上記のHAタンパク質溶液を用いて、ニワトリを免疫化した。HA活性を4,096~8,192の間に調整した0.5mlのHAタンパク質溶液を、16日間隔で2回、ニワトリに脚部筋肉接種した。初回接種から33日後、40日後、47日後、および50日後にニワトリから5mlずつ採血した。
上記ニワトリ血液をそれぞれ、室温で放置し、その後室温で遠心分離することにより、ニワトリ血清を得た。各々のニワトリ血清の赤血球凝集抑制活性(HI活性)を、以下の方法で検討した。まず、96ウェルプレートを用い、各ウェル25μlを含む、血清の1/2段階希釈列を作製した。次に、各ウェルに25μlの上記HAタンパク質(PBSで8HAに調製したもの)を加えた。プレートを室温で30分間静置後、0.5%/PBSのニワトリ赤血球50μlを各ウェルに加えた。1時間後に、赤血球凝集パターンを観察し、赤血球の凝集がみられる最大の希釈倍率を、HI活性値とした。初回接種後33日後の血清は、8,192のHI活性を示した。
また、初回接種40日後のニワトリ血清を用いて、種々のインフルエンザウイルスに対するHI活性の有無を検討した。A/chicken/Legok/2004(H5N1)、A/chicken/West Java/2009(H5N1)の各ウイルスを用いて、上記と同様の条件でHI活性を測定した。結果を図7に示す。ニワトリ血清は、全てのウイルスに対して、HI活性を示した。
また、HAタンパク質溶液を、ショ糖密度勾配法により分画した。各分画液のHA活性を、上記と同様の方法で検討した。その結果を図8に示す。天然のウイルスの1.18g/lの浮遊密度である分画4はHA活性を示さなかった。一方、より小さい浮遊密度を示す分画7~9において、HA活性が認められた。
上記のショ糖密度勾配の分画7を、電子顕微鏡で観察した。その結果を図9に示す。スパイクを有する球形で、粒子径が60nm~120nmであるウイルス粒子様構造が認められた。天然のウイルスは、原則として60~150nmの球形、100~1000nmの細長い繊維状、又、80~200nmの環状の形態をしている。これに対し、ボンビュクス・モリ由来のHAタンパク質は図10に示すように、天然ウイルス同様に多彩な形態を示し、球形のものは60~150nm、繊維状が200nm前後、そして環状が60~150nmの形をしていることが本研究で初めて明らかになった。この形態学特徴が、HAタンパク質の、これまでに見られなかった上記強い免疫力に反映されていると考えられる。
結論としては、この度の、設計変更をしたDNAによる、ボンビュクス・モリを利用したワクチン生産の意義の第一は、ボンビュクス・モリの蛹1頭で、発育鶏卵340個分のワクチン量を生産することである。
そこで、本発明者らは、C型肝炎ウイルスワクチンを開発するために、C型肝炎ウイルスの核(Core)タンパク質-E1タンパク質-E2タンパク質の融合タンパク質発現のための遺伝子情報を設計した。ここで融合タンパク質を設計したのは、同時に発現させることによりウイルス粒子様タンパク質が合成できることを期待したからであった。まず、GenbankにAccession No.ACK28185で登録されているHCV遺伝子のアミノ酸配列中の、Coreタンパク質から、E1タンパク質、E2タンパク質までのアミノ酸配列(配列番号13)に、FLAGタグ配列(配列番号5)を付加して、核酸設計の基となる融合タンパク質のアミノ酸配列を得た(配列番号14)。この融合タンパク質のアミノ酸配列を基に、実施例1と同様にして、コドン最適化Core-E1-E2融合タンパク質の核酸配列を設計した(配列番号15)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図12に示す。
設計したコドン最適化Core-E1-E2融合タンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8Core-E1-E2を作成した。
実施例1と同様にしてpBm-8Core-E1-E2を用いてバキュロウイルス組み換え体を得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得た。
得られたボンビュクス・モリの蛹乳剤をソニケーター(UR-20P、トミー精工製)で5分間超音波処理後、蔗糖密度勾配遠心法(蔗糖濃度10-50%、100,000G、24時間)により、Core-E1-E2融合タンパク質を精製した。精製したCore-E1-E2融合タンパク質を実施例1と同様にウェスタンブロッティングによって発現を確認した。図13に示す様に、60kDa付近にバンドが確認された。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
Core-E1-E2融合タンパク質が連結して発現したとすると83kダルトン以上の分子量を示すことが予想され、従って60kダルトンの分子サイズは Core-E1-E2が細胞内でプロテアーゼによるプロセッシングを受け成熟したE2が合成されたことが示唆された。この事実は、紛れもなくDNAで設計したワクチン用タンパク質が寸分の違いもなく産生されたことを示すもので、タンパクのバンドの濃さから見ても、C型肝炎用ワクチンが効率よく合成されたことが示唆された。
そこで、本発明者らは、日本脳炎ウイルスワクチンを開発するために、日本脳炎ウイルスのEタンパク質発現のための遺伝子情報を設計した。まず、GenbankにAccession No.ABQ52691で登録されているアミノ酸配列中のpreMタンパク質から、Mタンパク質、Eタンパク質までのアミノ酸配列(配列番号19)にFLAGタグ配列(配列番号5)を付加して、核酸設計の基となる日本脳炎ウイルスPreM-M-E融合タンパク質のアミノ酸配列を得た(配列番号20)。この日本脳炎ウイルスPreM-M-E融合タンパク質のアミノ酸配列を基に、実施例1と同様にして、日本脳炎ウイルスコドン最適化PreM-M-E融合タンパク質の核酸配列を設計した(配列番号21)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図16に示す。
設計した日本脳炎コドン最適化PreM-M-E融合タンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8JevpMMEを作成する。
実施例1と同様にしてpBm-8JevpMMEを用いて組み換え体バキュロウイルスを得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得る。
得られたボンビュクス・モリの蛹乳剤を実施例3と同様に超音波処理し、精製する。精製した日本脳炎ウイルスEタンパク質を実施例3と同様にウェスタンブロッティングによって発現を確認した(図17)。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
そこで、本発明者らは、狂犬病ウイルスワクチンを開発するために、狂犬病ウイルスのGタンパク質発現のための遺伝子情報を設計する。まず、GenbankにAccession No.ABX46657で登録されているアミノ酸配列(配列番号22)にFLAGタグ配列(配列番号5)を付加して、核酸設計の基となる狂犬病ウイルスGタンパク質のアミノ酸配列を得た(配列番号23)。この狂犬病ウイルスGタンパク質のアミノ酸配列を基に、実施例1と同様にして、狂犬病ウイルスコドン最適化Gタンパク質の核酸配列を設計した(配列番号24)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図18に示す。
設計した狂犬病ウイルスコドン最適化Gタンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8rvGを作成する。
実施例1と同様にしてpBm-8rvGを用いてバキュロウイルス組み換え体を得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得る。
得られたボンビュクス・モリの蛹乳剤を実施例3と同様に超音波処理し生成する。精製した狂犬病ウイルスGタンパク質を実施例3と同様にウェスタンブロッティングによって発現を確認する。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
そこで、本発明者らは、西ナイルウイルスワクチンを開発するために、西ナイルウイルスのPreM-M-E融合タンパク質発現のための遺伝子情報を設計する。まず、GenbankにAccession No.AAT95390で登録されているアミノ酸配列中のpreMタンパク質から、Mタンパク質、Eタンパク質までのアミノ酸配列(配列番号25)にFLAGタグ配列(配列番号5)を付加して、核酸設計の基となる西ナイルウイルスPreM-M-E融合タンパク質のアミノ酸配列を得た(配列番号26)。この西ナイルウイルスPreM-M-E融合タンパク質のアミノ酸配列を基に、実施例1と同様にして、西ナイルウイルスコドン最適化PreM-M-E融合タンパク質の核酸配列を設計した(配列番号27)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図19に示す。
設計した西ナイルウイルスコドン最適化PreM-M-E融合タンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8wnvpMMEを作成する。
実施例1と同様にしてpBm-8wnvpMMEを用いてバキュロウイルス組み換え体を得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得る。
得られたボンビュクス・モリの蛹乳剤を実施例3と同様に超音波処理し生成した。精製した西ナイルウイルスPreM-M-E融合タンパク質を実施例3と同様にウェスタンブロッティングによって発現を確認する。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
本発明者らは、MERSコロナウイルスワクチンを開発するために、MERSコロナウイルスのSタンパク質発現のための遺伝子情報を設計する。まず、GenbankにAccession No.AGN52936で登録されているアミノ酸配列(配列番号28)にFLAGタグ配列(配列番号5)を付加して、核酸設計の基となる西ナイルウイルスEタンパク質のアミノ酸配列を得た(配列番号29)。このMERSコロナウイルスSタンパク質のアミノ酸配列を基に、実施例1と同様にして、MERSコロナウイルスコドン最適化Sタンパク質の核酸配列を設計した(配列番号30)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図20に示す。
設計したMERSコロナウイルスコドン最適化Sタンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8mcvSを作成する。
実施例1と同様にしてpBm-8mcvSを用いてバキュロウイルス組み換え体を得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得る。
得られたボンビュクス・モリの蛹乳剤を実施例3と同様に超音波処理し生成した。精製したMERSコロナウイルスSタンパク質を実施例3と同様にウェスタンブロッティングによって発現を確認する。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
本発明者らは、口蹄疫ウイルスワクチンを開発するために、口蹄疫ウイルスのVP4-VP2-VP3-VP1-2A-3C融合タンパク質発現のための遺伝子情報を設計する。まず、GenbankにAccession No.HV940030で登録されている核酸配列から予想される、アミノ酸配列中のVP4、Vp2、VP1、2A、3Cタンパク質のアミノ酸配列をN末端側からC末端側にむけて結合したアミノ酸配列(配列番号31)にFLAGタグ配列(配列番号5)を付加して、核酸設計の基となる口蹄疫ウイルスのアミノ酸配列を得た(配列番号32)。この口蹄疫ウイルスVP4-VP2-VP3-VP1-2A-3C融合タンパク質のアミノ酸配列を基に、実施例1と同様にして、口蹄疫ウイルスコドン最適化VP4-VP2-VP3-VP1-2A-3C融合タンパク質の核酸配列を設計した(配列番号33)。設計したキメラ合成DNAの核酸配列とアミノ酸配列の対応を図21に示す。
設計した口蹄疫ウイルスコドン最適化VP4-VP2-VP3-VP1-2A-3C融合タンパク質遺伝子の核酸配列を基に、実施例1と同様に全長遺伝子DNAを合成し、pBm-8ベクターに挿入し、pBM-8fmdvPを作成する。
実施例1と同様にしてpBm-8fmdvPを用いてバキュロウイルス組み換え体を得、ボンビュクス・モリの蛹に接種し、ボンビュクス・モリ蛹乳剤を得る。
得られたボンビュクス・モリの蛹乳剤を実施例3と同様に超音波処理し生成した。精製した口蹄疫ウイルスVP4-VP2-VP3-VP1-2A-3C融合タンパク質を実施例3と同様にウェスタンブロッティングによって発現を確認する。
タンパクの生産量より、免疫反応が予想でき、これによって産生された抗体による中和試験での効果を推定する。
1)危険なウイルスを取り扱うことなく、人工合成したDNAを用いることで危険なウイルス由来のタンパク質も得られる。(P4やP3施設を必要とせず、危険なウイルスを取り扱わないので、ウイルスが人に感染したり衣服に付着したりすることで外部に漏れ出る可能性は無く、安全である)。
2)最初から、バイオインフォマティクスに基づき、病原性の低いアミノ酸配列を設計できること。
3)最初から、バイオインフォマティクスおよび進化解析により、将来のアミノ酸変異を予測し設計できること。
4)アミノ酸配列より遺伝子配列を求めており、アミノ酸配列では、例えばHAタンパク質においては、強毒部位とFLAGタグを除いては、元のアミノ酸配列と全く同じであるが、遺伝子配列にすると、そのホモロジーは77%に過ぎない(例えば図5参照)ため、ウイルス遺伝子とは容易に区別が可能である。
5)C末にFLAGタグ配列をつけているため、万一、ウイルスが細胞に感染したとしても、ウイルスのRNPあるいはM1タンパクと相互作用することはないので安全性が高い。
6)ボンビュクス・モリ細胞に最適化したCodon Usageを用いて遺伝子配列を人工的に設計し、ベクターに組み込んでいるため、ボンビュクス・モリ細胞での発現量が、ウイルス遺伝子由来の配列を用いたものより顕著に高い発現量となり、かつ、抗原性は元のウイルスと全く同じである。
7)ボンビュクス・モリ細胞を用いているため、糖鎖構造は複雑でなく、糖鎖による抗原性のマスキング作用は非常に弱い。そのため、ワクチンとしての抗体価上昇は、鶏卵で増殖させたウイルス由来の精製HAタンパク質の340倍の活性量と、遥かに高い結果となった。
8)FLAGタグを用いることで、発現の確認や精製が容易となる。
配列番号2:A/tufted duck/Fukushima/16/2011(H5N1) トリインフルエンザウイルスのHAアミノ酸配列
配列番号3:A/tufted duck/Fukushima/16/2011(H5N1)トリインフルエンザウイルスの改変HAアミノ酸配列
配列番号4:A/tufted duck/Fukushima/16/2011(H5N1)トリインフルエンザウイルスのコドン最適化HA遺伝子DNA配列
配列番号5:FLAGタグアミノ酸配列
配列番号6:FLAGタグDNA配列
配列番号7:高病原性アミノ酸配列
配列番号8:低病原性アミノ酸配列
配列番号9:A/chicken/Sukabumi/2008(H5N1)トリインフルエンザウイルスのHA遺伝子DNA配列
配列番号10:A/chicken/Sukabumi/2008(H5N1)トリインフルエンザウイルスのHAアミノ酸配列
配列番号11:A/chicken/Sukabumi/2008(H5N1)トリインフルエンザウイルスの改変HAアミノ酸配列
配列番号12:A/chicken/Sukabumi/2008(H5N1)トリインフルエンザウイルスのコドン最適化HA遺伝子DNA配列
配列番号13:C型肝炎ウイルスのCore-E1-E2融合タンパク質アミノ酸配列
配列番号14:C型肝炎ウイルスの改変Core-E1-E2融合タンパク質アミノ酸配列
配列番号15:C型肝炎ウイルスのコドン最適化Core-E1-E2遺伝子DNA配列
配列番号16:A/Shanghai/02/2013(H7N9)インフルエンザウイルスのHAアミノ酸配列
配列番号17:A/Shanghai/02/2013(H7N9)インフルエンザウイルスの改変HAアミノ酸配
配列番号18:A/Shanghai/02/2013(H7N9)インフルエンザウイルスのコドン最適化HA遺伝子DNA配列
配列番号19:日本脳炎ウイルスのPreM-M-E融合タンパク質アミノ酸配列
配列番号20:日本脳炎ウイルスのPreM-M-E融合タンパク質+FLAGタグアミノ酸配列
配列番号21:日本脳炎ウイルスコドン最適化PreM-M-E融合タンパク質遺伝子DNA配列
配列番号22:狂犬病ウイルスのGタンパク質アミノ酸配列
配列番号23:狂犬病ウイルスのGタンパク質+FLAGタグアミノ酸配列
配列番号24:狂犬病ウイルスコドン最適化Gタンパク質遺伝子DNA配列
配列番号25:西ナイルウイルスのPreM-M-E融合タンパク質アミノ酸配列
配列番号26:西ナイルウイルスのPreM-M-E融合タンパク質+FLAGタグアミノ酸配列
配列番号27:西ナイルウイルスコドン最適化PreM-M-E融合タンパク質遺伝子DNA配列
配列番号28:MERSコロナウイルスのSタンパク質アミノ酸配列
配列番号29:MERSコロナウイルスのSタンパク質+FLAGタグアミノ酸配列
配列番号30:MERSコロナウイルスコドン最適化Sタンパク質遺伝子DNA配列
配列番号31:口蹄疫ウイルスのVP4-VP2-VP3-VP1-2A-3C融合タンパク質アミノ酸配列
配列番号32:口蹄疫ウイルスのVP4-VP2-VP3-VP1-2A-3C融合タンパク質+FLAGタグアミノ酸配列
配列番号33:口蹄疫ウイルスコドン最適化VP4-VP2-VP3-VP1-2A-3C融合タンパク質遺伝子DNA配列
Claims (21)
- ウイルスに対するワクチンをボンビュクス・モリ(Bombyx mori)で産生するための、ボンビュクス・モリにおける発現にコドン最適化された該ウイルスの核酸配列を含む核酸。
- ウイルスが、インフルエンザウイルス、C型肝炎ウイルス、日本脳炎ウイルス、狂犬病ウイルス、西ナイルウイルス、MERSコロナウイルス、および口蹄疫ウイルスからなる群より選択される、請求項1に記載の核酸。
- ウイルスが、A型インフルエンザウイルスである、請求項2に記載の核酸。
- ウイルスが、H5型およびH7型からなる群より選択される、請求項3に記載の核酸。
- 核酸配列が、インフルエンザウイルスのHAタンパク質をコードする、請求項4に記載の核酸。
- 核酸配列が、弱毒化遺伝子改変を有する、請求項5に記載の核酸。
- 核酸配列が、配列番号4、配列番号12、配列番号18からなる群より選択される核酸配列である、請求項1~6のいずれか一項に記載の核酸。
- ウイルスが、C型肝炎ウイルスである、請求項2に記載の核酸。
- 核酸配列が、C型肝炎ウイルスのE1タンパク質、E2タンパク質および/または核タンパク質をコードする、請求項8に記載の核酸。
- 核酸配列が、C型肝炎ウイルスのE1タンパク質、E2タンパク質および核タンパク質をコードする、請求項8に記載の核酸。
- 核酸配列が、配列番号15である、請求項10に記載の核酸。
- 核酸配列が、配列番号4、12、15、18、21、24、27、30、または33である、請求項2に記載の核酸。
- 請求項1~12のいずれか一項に記載の核酸を含む、ベクター。
- 請求項13に記載のベクターを用いて産生された組み換え体バキュロウイルス。
- 請求項1~12のいずれか一項に記載の核酸、請求項13に記載のベクター、または請求項14に記載の組み換え体バキュロウイルスを含む、ボンビュクス・モリ。
- 請求項1~12のいずれか一項に記載の核酸がコードするアミノ酸配列からなる、ポリペプチド。
- 請求項1~12のいずれか一項に記載の核酸、請求項13に記載のベクター、請求項14に記載の組み換え体バキュロウイルス、または請求項15に記載のボンビュクス・モリを使用する、ワクチンの生産方法。
- 以下の工程:
1)請求項1~12のいずれか一項に記載の核酸、請求項13に記載のベクター、または請求項14に記載の組み換え体バキュロウイルスを得る工程
2)請求項1~12のいずれか一項に記載の核酸、請求項13に記載のベクター、または請求項14に記載の組み換え体バキュロウイルスをボンビュクス・モリに導入する工程;および
3)ボンビュクス・モリからタンパク質を回収する工程
を含む、請求項17に記載のワクチンの生産方法。 - ウイルスの感染に対する、動物のワクチン接種のための、請求項16に記載のポリペプチドを含むか、または請求項17もしくは18に記載の生産方法に従って生産される、ワクチン。
- ウイルス様粒子構造である、請求項19に記載のワクチン。
- ウイルス様粒子構造の直径が50nm~150nmである、請求項20に記載のワクチン。
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| WO2015119291A1 (ja) * | 2014-02-10 | 2015-08-13 | 有限会社生物資源研究所 | ウイルス様粒子 |
| WO2016179099A1 (en) * | 2015-05-04 | 2016-11-10 | Epivax, Inc. | Modified h7 hemagluttinin glycoprotein of the influenza a/shanghai/2/2013 h7 sequence |
| JP2017513501A (ja) * | 2014-04-25 | 2017-06-01 | ジェネトン | 高ビリルビン血症の処置 |
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| WO2021002355A1 (ja) | 2019-07-03 | 2021-01-07 | アイリス株式会社 | インフルエンザウイルス感染症を治療するための医薬組成物 |
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| AU2012315421C1 (en) | 2011-09-30 | 2019-12-05 | Aramis Biotechnologies Inc. | Increasing virus-like particle yield in plants |
| EP2876161B1 (en) * | 2012-07-23 | 2018-12-05 | The Institute of Biological Resources | Vaccine |
| US10781426B2 (en) * | 2012-09-23 | 2020-09-22 | Erasmus University Medical Center Rotterdam | Human Betacoronavirus lineage C and identification of N-terminal dipeptidyl peptidase as its virus receptor |
| US12467058B2 (en) | 2013-03-28 | 2025-11-11 | Aramis Biotechnologies Inc. | Influenza virus-like particle production in plants |
| KR20160091350A (ko) * | 2013-11-29 | 2016-08-02 | 더 트러스티스 오브 더 유니버시티 오브 펜실바니아 | 중동 호흡기 증후군 코로나바이러스(MERS-CoV) 백신 |
| CA2936350C (en) | 2014-01-10 | 2023-01-31 | Medicago Inc. | Cpmv enhancer elements |
| US12485166B2 (en) | 2020-02-06 | 2025-12-02 | Longhorn Vaccines And Diagnostics, Llc | Vaccines for the treatment and prevention of zoonotic infections |
| CN114432435B (zh) * | 2022-01-25 | 2024-05-17 | 苏州大学 | 一种基于多角体纳米结构的SARS-Cov-2疫苗及其制备方法和应用 |
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| EP3626827A1 (en) * | 2013-03-28 | 2020-03-25 | Medicago Inc. | Influenza virus-like particle production in plants |
| WO2015119291A1 (ja) * | 2014-02-10 | 2015-08-13 | 有限会社生物資源研究所 | ウイルス様粒子 |
| JPWO2015119291A1 (ja) * | 2014-02-10 | 2017-03-30 | 有限会社生物資源研究所 | ウイルス様粒子 |
| JP2017513501A (ja) * | 2014-04-25 | 2017-06-01 | ジェネトン | 高ビリルビン血症の処置 |
| WO2016179099A1 (en) * | 2015-05-04 | 2016-11-10 | Epivax, Inc. | Modified h7 hemagluttinin glycoprotein of the influenza a/shanghai/2/2013 h7 sequence |
| CN107921097A (zh) * | 2015-05-04 | 2018-04-17 | 埃皮瓦克斯公司 | 流感a/shanghai/2/2013 h7序列的改性h7血凝素糖蛋白 |
| JP2018515074A (ja) * | 2015-05-04 | 2018-06-14 | エピバックス インコーポレーテッド | インフルエンザa/上海/2/2013 h7配列の改変h7赤血球凝集素糖タンパク質 |
| US10286063B2 (en) | 2015-05-04 | 2019-05-14 | Epivax, Inc. | Modified H7 hemagglutinin glycoprotein of the Influenza A/Shanghai/2/2013 H7 sequence |
| AU2016258929B2 (en) * | 2015-05-04 | 2020-10-08 | Epivax, Inc. | Modified H7 hemagluttinin glycoprotein of the influenza A/Shanghai/2/2013 H7 sequence |
| WO2021002355A1 (ja) | 2019-07-03 | 2021-01-07 | アイリス株式会社 | インフルエンザウイルス感染症を治療するための医薬組成物 |
| EP4599758A2 (en) | 2019-07-03 | 2025-08-13 | Aillis Inc. | Pharmaceutical composition for treating influenza virus infections |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2876161A1 (en) | 2015-05-27 |
| US9555094B2 (en) | 2017-01-31 |
| JP6205359B2 (ja) | 2017-09-27 |
| JPWO2014017493A1 (ja) | 2016-07-11 |
| US20150140103A1 (en) | 2015-05-21 |
| EP2876161A4 (en) | 2016-03-23 |
| WO2014017493A9 (ja) | 2014-12-04 |
| EP2876161B1 (en) | 2018-12-05 |
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