WO2003078631A1 - Nouveaux genes - Google Patents
Nouveaux genes Download PDFInfo
- Publication number
- WO2003078631A1 WO2003078631A1 PCT/JP2003/002620 JP0302620W WO03078631A1 WO 2003078631 A1 WO2003078631 A1 WO 2003078631A1 JP 0302620 W JP0302620 W JP 0302620W WO 03078631 A1 WO03078631 A1 WO 03078631A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cells
- dna
- seq
- insulin
- nucleotide sequence
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
- C12Q1/6883—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for diseases caused by alterations of genetic material
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/46—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
- C07K14/47—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
Definitions
- the present invention relates to a technique for detecting insulin-producing cells that are growing from a tissue or a cell population composed of a plurality of cell types.
- the present invention relates to a technique for proliferating insulin-producing ⁇ cells and their precursor cells, or cells related to knee ⁇ cells, such as nerve cells.
- Knee ⁇ cells are the organs that produce insulin, the only peptide hormone that lowers blood sugar. If the insulin-producing ability of the extracted ⁇ -cells is impaired, it is impossible to maintain a normal blood glucose level and diabetes will occur. Transplantation of cells with insulin-producing ability is a fundamental therapy to restore insulin-producing ability and normal control of blood sugar level in diabetic patients with impaired insulin-producing ability.
- Sources of insulin-producing cells may be the cadaver's knee, or cells that have insulin-producing ability differentiated from embryonic stem cells (ES cells) or mesenchymal stem cells that are about to be put into practical use in the near future.
- ES cells embryonic stem cells
- mesenchymal stem cells that are about to be put into practical use in the near future.
- Embryonic stem cells are cells derived from the inner cell mass of blastocysts and have the ability to differentiate into almost all tissues and cells.
- Mesenchymal stem cells are multipotent cells found in bone marrow, blood, dermis, periosteum and the like. In recent years, it has been shown that cells having functions such as insulin-producing cells, nerve cells, and cardiomyocytes can be artificially differentiated from these cells in vitro and in vivo.
- HGF Hetpatocytegrowth Factor
- Reg protein a cell differentiation factor
- petacellulin is made to act on cells serving as a source (O tonkoski et al. Natiabe et al., Proc. Natl. Ac ad. Sci. 91, 3589-35 92, 1994, Yamamoto et al., Diabetes, Vol. 43, 947-953, 1994. 49, 2021-2027, 2000) Power S, To date, no factors have been found that can be applied to actual treatment.
- HGF Hetpatocytegrowth Factor
- the problem to be solved by the present invention is a method for detecting a cell of interest, that is, a insulin-producing cell having a proliferative ability, from a cell population containing the number of insulin-producing cells required for treatment using cell differentiation, growth factors, and the like. Further, it is to provide a method for selecting them, and to treat insulin-producing cells, ie, down
- the present invention relates to a novel gene that is specifically expressed in the knee of a PHHI patient, a protein translated from the gene, and a method for using the same.
- the protein of the present invention is (1) a protein having the amino acid sequence represented by SEQ ID NO: 1, 2 or 3, or (2) a protein having the amino acid sequence represented by SEQ ID NO: 1, 2 or 3. is there.
- the novel gene of the present invention comprises (1) a DNA encoding a protein consisting of the amino acid sequence represented by SEQ ID NO: 1, 2 or 3, and (2) a base sequence represented by SEQ ID NO: 4, 5 or 6.
- DNA (3) DNA consisting of the nucleotide sequence at positions 174 to 904 of SEQ ID NO: 4, DNA consisting of the nucleotide sequence at positions 79 to 21 of SEQ ID NO: 5, or the nucleotide sequence at positions 28 to 384 of SEQ ID NO: 6
- novel genes and proteins of the present invention can be used by: (1) a method for detecting growing insulin-producing cells using the novel DNA of the present invention; (2) a method for detecting a vector incorporating a novel DNA. (3) a method of introducing the novel DNA into primary cultured cells or established cell lines containing embryonic stem cells or mesenchymal stem cells to differentiate the embryonic stem cells or mesenchymal stem cells, (4) A method in which novel DNA is introduced into primary cultured cells or established cell lines containing embryonic stem cells or mesenchymal stem cells to proliferate embryonic stem cells or mesenchymal stem cells.
- the embryonic stem cells or the mesenchymal stem cells are cells having a physiological function of a living body.
- the differentiated cells are preferably insulin-producing cells or nerve cells.
- An antibody that recognizes the protein of the present invention or the protein encoded by the novel gene as an antigen is also one of the present invention.
- the target disease in the diagnostic method of the present invention includes a cell proliferative disease, a spiritis disease, a nervous system disease, familial persistent hyperinsulinic hypoglycemia, and the like.
- FIG. 1 is a diagram showing the results of Northern analysis of the expression of NC1, NC2 and NC3 genes specific to the knee of patients with familial persistent hyperinsulinic hypoglycemia c
- FIG. 4 is a view showing the results of examining changes in the expression of the NC3 gene associated with cell differentiation by Northern analysis.
- FIG. 3 is a view showing a morphological change of PC12 cells in which the NC1 gene is forcibly expressed.
- the present inventors search for genes that are specifically expressed in proliferating insulin-producing cells or knee ⁇ cells, so that such genes may be expressed.
- the knee tissue of a patient with familial persistent hyperinsulinic hypoglycemia (; persistent hyperinsulin em ipopoglycem iaof 1 nfancy; PHHI) was selected as the highly likely tissue.
- PHHI is a human transmissible disease also called nesidiob 1 astosis, and it is known that some of the potassium channels on ⁇ ⁇ cells have mutations. For this reason, the overlying ⁇ -cells of patients with this disease are constantly in a state where insulin secretion is promoted and exhibit severe hypoglycemic symptoms (Science, 268, 426 (1995)).
- patients with PHHI have high blood insulin levels and hyperplasia of islets of Langerhans, especially ⁇ cells, which are clearly distinguished from transformed cells such as cancer cells. Therefore, the spleen of ⁇ ⁇ patients is considered to be a model for spontaneous proliferation of knee ⁇ cells.
- the present inventors identify a gene that is specifically expressed in the knee of PHHI patients, it can be a marker for detecting proliferating ⁇ ⁇ cells. Considering that it could be expected to encode a molecule that differentiates progenitor cells into ⁇ ⁇ cells or proliferates knee ⁇ cells, extracting RN ⁇ ⁇ from the patient's knee and healthy human's kidney, By synthesizing cDNA of the gene expressed in each tissue and performing gene subtraction, we succeeded in obtaining a new gene that is specifically expressed in the pancreas of PHHI patients .
- the present invention relates to a novel gene specifically expressed in the knee of a PHHI patient, a protein translated from the gene, and a method of using the same.
- Examples of the DNA of the present invention include (1) a DNA encoding a protein consisting of the amino acid sequence represented by SEQ ID NO: 1, 2 or 3, and (2) a DNA consisting of the base sequence represented by SEQ ID NO: 4, 5 or 6. (3) a DNA consisting of the nucleotide sequence at positions 174 to 904 of SEQ ID NO: 4, a DNA consisting of the nucleotide sequence at positions 79 to 21 of SEQ ID NO: 5, or the DNA consisting of the nucleotide sequence at positions 28 to 384 of SEQ ID NO: 6 Becomes DNA.
- a DNA comprising a part of the nucleotide sequence represented by SEQ ID NO: 4, 5, or 6, and at least a DNA having the nucleotide sequence of the DNA of (3) above.
- any DNA having the nucleotide sequence represented by SEQ ID NO: 4, 5, or 6 in (2) is a novel gene discovered for the first time in the present invention.
- RNA is extracted from the knee of PHHI patients and the spleen of healthy individuals by the acidic phenol method, poly A (+) RNA is purified, and cDNA derived from each tissue is synthesized using reverse transcriptase. .
- gene subtraction was performed by the method of Hu bank and Chatz (Nucleic Acids Res., 22, 5640 (1993)), and the cDNA was specifically expressed in the knee of PHHI patients. Detect the genes that are present. This time, we determined the base sequence of the specific gene and searched the base sequence database, and confirmed that at least three of the specific genes were novel genes, that is, genes whose functions were not clear. Was.
- NC1, NC2, and NC3 The three types of genes identified as new genes by database search were named NC1, NC2, and NC3, respectively, and their nucleotide sequences were set as SEQ ID NOs: 4 (NC1), 5 (NC2), and ⁇ 6 (NC 3).
- NC1 nucleotide sequences
- NC2 nucleotide sequences
- NC 3 amino acid sequences of the proteins translated from those genes were predicted from the nucleotide sequences, and are shown in SEQ ID NOS: 1 (NC1), 2 (NC2), and 3 (NC3).
- DNA having a partial base sequence is not particularly limited as long as the purpose can be achieved.
- DNA comprising the base sequence at positions 174 to 904 of SEQ ID NO: 4 DNA consisting of the nucleotide sequence at positions 79 to 2115 of SEQ ID NO: 5 or DNA consisting of the nucleotide sequence at positions 28 to 384 of SEQ ID NO: 6, and the DNA of SEQ ID NO: 4, 5 or 6 containing the partial sequence region DNA consisting of a part of the base sequence is exemplified.
- the method for obtaining the DNA of the present invention is not particularly limited, and the gene obtained by the above-described method for obtaining a novel gene may be used as it is, or only a part thereof may be used, or a DNA having the sequence may be produced by chemical synthesis. You may.
- Examples of the protein of the present invention include (1) a protein having the amino acid sequence represented by SEQ ID NO: 1, 2 or 3, and (2) a protein having the amino acid sequence represented by SEQ ID NO: 1, 2 or 3. .
- the method for obtaining these proteins is not particularly limited.
- the DNA of the present invention is genetically engineered using Escherichia coli, animal cells or the like as a host. Transformants can be obtained by incorporating the transfectant into a sliver and culturing the transformant. Known methods can be used for the vector integration, transformation method, culture method, and the like here.
- Proliferating insulin-producing cells Z knee cells can be detected and selected from tissues or cell populations containing Northern extracts RN Alpha purposes of tissue or cell population, the onset Ming suitable method DNA from specific genes, such as those labeled with have use radioisotopes 3 2 P and DNA modifying enzymes as probes Perform analysis.
- the presence of growing insulin-producing cells / knee ⁇ cells in the tissue or cell population of interest is detected by autoradiography.
- proliferating insulin-producing cells can also be obtained by performing PCR using cDNA synthesized from R ⁇ extracted from a target tissue or cell population using the DNA of the present invention as a primer. Knee ⁇ cells can be detected.
- an antibody recognizing the protein of the present invention as an antigen is produced, and the insulin-producing cells and knee cells proliferating from a target tissue or cell population by an immunological technique, for example, tissue immunostaining, using the antibody, are prepared. Can be detected.
- this antibody can be used to diagnose diseases involving proliferation of insulin-producing cells / knee ⁇ cells.
- diseases include, for example, cell proliferative diseases, cardiovascular diseases, neurological diseases, and the like.
- the above antibodies are suitable for diagnosis of familial persistent hyperinsulinic hypoglycemia. Used.
- the gene of the present invention is specifically expressed in the knee of a PHHI patient who is a model for spontaneous proliferation of knee ⁇ cells, it is involved in the proliferation or differentiation of ⁇ ⁇ cells or cells related thereto. It is thought that there is. Therefore, the DNA of the present invention derived from the gene can be used as a precursor cell for insulin-producing cells / knee cells and cells related thereto, such as, for example, nerve cells, or cultured cells corresponding to the precursor cells, such as embryonic stem cells, It is thought that by introducing and expressing mesenchymal stem cells and the like, the proliferation of those cells can be promoted.
- the DNA of the present invention is Producer cells / Knee ⁇ cells and progenitor cells of cells related to them, such as neurons, or cultured cells corresponding to the progenitor cells, such as embryonic stem cells or mesenchymal stem cells, and express them by introducing them. It is thought that the differentiation of these cells into insulin-producing cells and nerve cells can be induced.
- These embryonic stem cells and mesenchymal stem cells are preferably cells having physiological functions of a living body. Here, the physiological function of the living body is in Vitr. Or it means high differentiation potential in vivo.
- a commonly known method can be used. BEST MODE FOR CARRYING OUT THE INVENTION
- the recovered DNA fragment was suspended in sterile distilled water, and 1.2 g of the cDNA fragment was combined with 8 g of R—Bgl—24 (agcactctccagccctctcac oligo DNA having the nucleotide sequence of cgca) and 4 g of the DNA fragment.
- R—Bgl—24 agcactctccagccctctcac oligo DNA having the nucleotide sequence of cgca
- R—Bgl—12 gatctgcggtga
- the reaction was carried out at 16 ° C for 16 hours using England's Biolab.)
- the DNA concentration of the reaction product was adjusted to 6 g / m 1, and 11 minutes were collected by fractionation.
- the amplified product from the knee of the PHHI patient is called a tester, and the amplified product from the healthy human knee is called a driver.
- R-Bgl-24 and R-Bgl-12 oligo DNAs are removed by cutting the tester and driver with Dp nil, and another oligo DNA J-Bgl-24 (accgacgtcgactatccatga aca) is used only for the tester.
- J—Bgl—12 (.gatctgttcatg) was conjugated.
- a 100-fold (40 ⁇ ) driver was added to 0.4 ⁇ g of the tester to which the oligo DNA was bound, and after ethanol precipitation, 4 ⁇ l of EEX3 buffer [30 mM N— (2—: hydroxy — Ethyl) iperazine—N—3—propanesulfonicacid (manufactured by Sigma); 3 mM EDTA (pH 8.0)].
- This DNA solution was denatured by heat treatment at 98 ° C for 5 minutes, then kept at 67 ° C for 20 hours to anneal, and then TE buffer [10 mM Trizma Base (Sigma); 1 mM EDTA ( pH 8.0)] to obtain 400 ⁇ l.
- the product was digested with D p nil, and 1.2 ⁇ g of the cDNA fragment was digested with 8 g of N—B g 1—24 (.aggcaactgtgctatcgaggg aa), 4 ⁇ g ⁇ N—B g 1—1 2 ( gatcttccctcg) to obtain DP2 according to the procedure for obtaining DP1.
- DP2 was amplified by PCR using N-Bg1-24 as a primer, digested with Dpnil, and then combined with J-Bgl-24 and J-Bgl-12 to obtain DP3 in the same manner.
- J one B g 1 - amplifying the DP 3 by 24 primer was P CR reactions (9 5 ° C 1 minute / / 70 ° C 3 min 22 cycles), resulting ⁇ After the width product was cut with Dpnil, it was subcloned into the BamHI site of pUC19.
- nucleotide sequence of the obtained clone was determined and a nucleotide sequence database such as GeiiBank was searched, three of the clones did not match any nucleotide sequence in the database. Further, using these clones as a probe, a cDNA library was screened to obtain full-length cDNAs, which were designated as NC1, NC2 and NC3, respectively.
- NC 1 SEQ ID NO: 4
- NC 2 SEQ ID NO: 5
- NC 3 SEQ ID NO: 6
- RNA was extracted and purified. These were fractionated by electrophoresis in a 1.0% agarose gel, and then transferred to a nylon membrane (Hi Pond 1N, manufactured by Amersham Pharmacia) by the cabillari method.
- T 4 polynucleotide key Na ⁇ "peptidase (Takara Shuzo) and - 32 P] ATP and radiolabeled using (Amersham 'Pharmacia Co.), Nai port transferring the as a probe for Northern analysis RNA.
- RIN-m cells established from rat inulinoma have a low insulin-producing ability
- the addition of sodium butyrate to the culture system allows them to secrete high levels of insulin, indicating that they differentiate into insulin-producing cells.
- B arthol ome usz et al., En docrinology 24, 2680-2685, 1989 After culturing the RIN-m cells for 16 hours in the presence of 6 mM sodium butyrate, the total RNA was extracted, and the DNA consisting of the nucleotide sequence of positions 28 to 384 of SEQ ID NO: 6 was used as a probe as described in Example 2.
- Northern analysis was performed in the same manner. As a result, as shown in FIG. 2A, the expression of NC3 gene was enhanced in RIN-m cells cultured with sodium butyrate.
- PC-12 cells derived from adrenal pheochromocytoma are known to extend neurites and differentiate into neurons by adding nerve growth factor (NGF) (Saltiei et al., Biossay 16). Vol. 405-411, p. 1994). All RNAs were extracted from PC-12 cells cultured for 16 hours in a culture system in which NGF was added to a concentration of 50 ng / ml, and DNA consisting of the 28th to 384th base sequence of SEQ ID NO: 6 Using the as a probe, Northern analysis was performed in the same manner. As shown in FIG. 2B, the expression of NC3 gene was enhanced in PC-12 cells cultured with NGF.
- NGF nerve growth factor
- Example 4 Morphological change of PC-12 cell in which NC1 gene was forcibly expressed This is a region encoding a protein consisting of the amino acid sequence of SEQ ID NO: 1 among the nucleotide sequences described in SEQ ID NO: 4.
- the DNA of the nucleotide sequence at positions 174 to 904 was incorporated into a predetermined site of pCI neo, a gene expression vector for animal cells, to construct an NC1 gene expression vector.
- the cells were maintained in a culture system to which geneticin was added at a concentration of 500 g / m1, and cells having the expression vector were selected.
- FIG. 3 in the PC-12 cells in which the NC1 gene was forcibly expressed, cells in which the transgenic bulge was extended were observed, and the PC-12 cells were forcibly expressed in the NC1 gene.
- the novel gene discovered by the present invention is not only specifically expressed in the knee of PHHI patients, but also changes its expression as the cells differentiate and proliferates, and transgenes into undifferentiated cells. It can induce differentiation into functional cells by forcibly expressing it by a technical method. Therefore, insulin-producing cells having a proliferative ability can be easily detected and selected using these genes and a part of the DNA and proteins translated therefrom. It can be differentiated and propagated. In addition, new diagnostic methods for various diseases caused by abnormal differentiation and proliferation of darka 0 cells, which are insulin-producing cells, and cells related thereto (eg, nerve cells) can be developed.
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Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003576625A JP4335696B2 (ja) | 2002-03-15 | 2003-03-06 | 新規遺伝子 |
| US10/507,876 US20060057645A1 (en) | 2002-03-15 | 2003-03-06 | Novel genes |
| AU2003211732A AU2003211732A1 (en) | 2002-03-15 | 2003-03-06 | Novel genes |
| EP03744510A EP1518929A4 (en) | 2002-03-15 | 2003-03-06 | NEW GENES |
| CA002479154A CA2479154A1 (en) | 2002-03-15 | 2003-03-06 | Novel genes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002071592 | 2002-03-15 | ||
| JP2002/71592 | 2002-03-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003078631A1 true WO2003078631A1 (fr) | 2003-09-25 |
| WO2003078631A9 WO2003078631A9 (fr) | 2005-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/002620 Ceased WO2003078631A1 (fr) | 2002-03-15 | 2003-03-06 | Nouveaux genes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060057645A1 (ja) |
| EP (1) | EP1518929A4 (ja) |
| JP (1) | JP4335696B2 (ja) |
| AU (1) | AU2003211732A1 (ja) |
| CA (1) | CA2479154A1 (ja) |
| WO (1) | WO2003078631A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005030961A1 (ja) * | 2003-09-12 | 2005-04-07 | Kaneka Corporation | 新規な神経幹細胞マーカー |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995028411A1 (en) * | 1994-04-13 | 1995-10-26 | Baylor College Of Medicine | Sequence encoding mammalian sulfonylurea receptor and method of detecting persistent hyperinsulinemic hypoglycemia of infancy |
| WO1998044159A1 (en) * | 1997-03-31 | 1998-10-08 | Abbott Laboratories | Reagents and methods useful for detecting diseases of the gastrointestinal tract |
| WO2002012262A1 (en) * | 2000-08-07 | 2002-02-14 | Gene Logic, Inc. | IDENTIFICATION OF cDNAs ASSOCIATED WITH BENIGN PROSTATIC HYPERPLASIA |
-
2003
- 2003-03-06 WO PCT/JP2003/002620 patent/WO2003078631A1/ja not_active Ceased
- 2003-03-06 AU AU2003211732A patent/AU2003211732A1/en not_active Abandoned
- 2003-03-06 US US10/507,876 patent/US20060057645A1/en not_active Abandoned
- 2003-03-06 CA CA002479154A patent/CA2479154A1/en not_active Abandoned
- 2003-03-06 EP EP03744510A patent/EP1518929A4/en not_active Withdrawn
- 2003-03-06 JP JP2003576625A patent/JP4335696B2/ja not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995028411A1 (en) * | 1994-04-13 | 1995-10-26 | Baylor College Of Medicine | Sequence encoding mammalian sulfonylurea receptor and method of detecting persistent hyperinsulinemic hypoglycemia of infancy |
| WO1998044159A1 (en) * | 1997-03-31 | 1998-10-08 | Abbott Laboratories | Reagents and methods useful for detecting diseases of the gastrointestinal tract |
| WO2002012262A1 (en) * | 2000-08-07 | 2002-02-14 | Gene Logic, Inc. | IDENTIFICATION OF cDNAs ASSOCIATED WITH BENIGN PROSTATIC HYPERPLASIA |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005030961A1 (ja) * | 2003-09-12 | 2005-04-07 | Kaneka Corporation | 新規な神経幹細胞マーカー |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003211732A1 (en) | 2003-09-29 |
| EP1518929A1 (en) | 2005-03-30 |
| US20060057645A1 (en) | 2006-03-16 |
| JPWO2003078631A1 (ja) | 2005-07-14 |
| CA2479154A1 (en) | 2003-09-25 |
| JP4335696B2 (ja) | 2009-09-30 |
| EP1518929A4 (en) | 2005-11-23 |
| WO2003078631A9 (fr) | 2005-01-06 |
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