WO2000015785A2 - GENVERÄNDERUNG IM GEN FÜR DIE Gβ3-UNTEREINHEIT DES HUMANEN G-PROTEINS - Google Patents
GENVERÄNDERUNG IM GEN FÜR DIE Gβ3-UNTEREINHEIT DES HUMANEN G-PROTEINS Download PDFInfo
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- G01N2800/042—Disorders of carbohydrate metabolism, e.g. diabetes, glucose metabolism
Definitions
- the present invention relates to a new nucleic acid sequence coding for the G ⁇ 3 subunit of the human G protein, and to the use of Gß3 subunits of the G protease to determine the risk of a disease associated with a G protein malfunction is to get sick.
- G-proteins Heterotrimeric guanine nucleotide-binding proteins
- G-proteins are of outstanding importance for intracellular signal transduction. They mediate the conduction of extracellular signals after stimulation of hormone receptors and other receptors, which undergo a conformational change after receptor activation. This leads to the activation of G proteins, which can subsequently activate or inhibit intracellular effectors (e.g. ion channels, enzymes).
- G-Prote ne control intracellular signal processing after hormonal stimulation of heptahelical receptors in the cell membrane, but also after stimulation of receptors with intrinsic tyrosine kinase activity. Regulated cell functions include cell division and growth, contraction, release of cell substances and the like. v.m ..
- Heterotrimeric G proteins are composed of three subunits, the ⁇ , ⁇ and ⁇ subunits. So far, several different ⁇ -subunits, 5 ß-subunits and approx. 12 ⁇ -subunits have been detected using biochemical and molecular biological methods (Birnbaumer, L. and Birnbaumer, M., Signaltransduction by G protems: 1994 edition. J.Recept.Res. 15: 213-252, 1995; Offermans, S. ind Schultz, G. Complex information processing by the transmembrane signaling
- Heterotrimeric G proteins Organizers of Transmembrane Signals.
- PTX pertussis toxin
- G proteins are also referred to as "PTX-sensitive G proteins.
- ß ⁇ subunits perform essential functions in G protein activation and in the modulation of intracellular reactions. All previously known G-protein- ⁇ -subunits have high homologies at the level of the nucleotide sequence and at the level of the amino acid sequence. These similarities are found not only within the human ß subunits (Gßl, Gß2, Gß3), but also in comparison to ß subunits of other species, such as fruit flies or yeast.
- This human GNB3 gene was developed by Levine et al. (Levine, MA, Smallwood, PM, Moen, PT Jr., Helman, LJ and Ahn, TG Molecular cloning of beta 3 subunit, a third form of the G protein beta-subunit polypeptide. Proc. Natl. Acad. Sei. USA 87 (6), 2329-2333 (1990)).
- the invention relates to a new human cDNA for the Gß3 subunit of human G protein.
- C1429T a further polymorphism in the human GNB3 gene, which is called "C1429T” in the following.
- This polymorphism is found at position 1429 of the cDNA. This corresponds to exon 11 of the pre-mRNA, but outside the open reading frame in the 3 'untranslated area.
- This polymorphism is in a pronounced distributional imbalance with the known C825T polymorphism, such that almost all GBN3-825C alleles have the genotype 1429C and almost all GBN3-825T alleles have the genotype 1429T.
- This polymorphism C1429T is therefore just as suitable as the polymorphism C825T for the detection of the increased activatability of G proteins.
- the polymorphism C1429T is based on the sequence of the cDNA as described by Levine and co-workers. At position 1429 of the cDNA, the C is replaced by a T:
- This polymorphism is detected by methods familiar to the person skilled in the art, such as specific hybridization, sequencing, PCR reaction with subsequent restriction analysis, DNA chip technology, single strand conformation polymorphism, etc.
- the detection was carried out by amplification of the corresponding gene segment and subsequent Analysis of the restriction fragment length polymorphism using the restriction enzymes Ba.nl, BshNI, £ co64I or their isoschizomers.
- the new nucleic acid sequence can be used to produce antisense medicaments for the therapy or prevention of diseases, a nucleic acid sequence which is complementary to this nucleic acid sequence being used to produce the antisense medicament.
- the patients can e.g. be treated with antisense oligonucleotides or vectors to prevent transcription or translation of the Gß3 subunit.
- the invention further relates to the use of ⁇ 3 subunits of the G-Proteme to determine the risk of developing a disease which is associated with a G-Protem malfunction.
- Gß3s splice variant which has the polymorphism C1429T or can be attributed to the polymorphism C825T, can form a functional heterotimer in combination with the G-protein subunits G ⁇ 2 and G ⁇ 5, it was unclear in which way Gß3s increased activation leads from G-Protemen.
- the object of the present invention is based on the knowledge that the Gß3s subunit leads to an increased activatability of G proteins.
- the increased activatability of G proteins was demonstrated by transfection of the corresponding cDNAs and expression of Gß3 and Gß3s in COS-7, which is well known to the person skilled in the art
- Diseases which are associated with a G-protein malfunction are to be understood as diseases in which the G-protein is involved in signal transduction and does not perform its function in a physiological manner.
- the faulty control can have a number of causes, for example a change in the structural gene or a changed gene expression.
- the present invention relates to diseases associated with the GNB3-825T allele or GNB3-1429T allele described above. These include diabetes mellitus (type 2), obesity and obesity, coronary heart disease, immune diseases due to an enhanced function of the immune system, and high-risk pregnancies with the risk of premature birth (premature birth) .-.
- the following examples refer to tests with the GNB3-825T allele. Because of the great agreement (coupling equilibrium) between the genotype at positions 825 and 1429, these examples and those from the
- Type 2 diabetes (synonyms: adult diabetes, non-insulin-dependent diabetes) is a serious illness with high cardiovascular morbidity and mortality. Genetic influences and obesity contribute significantly to the pathogenesis. Type 2 diabetes often begins as insulin resistance, which is initially compensated for by increased insulin secretion, so that the affected individuals remain asymptomatic (euglycamic). It is only when the increased insulin secretion can no longer be maintained that diabetes occurs with increased blood sugar levels. At the cellular level, changes in components of the insulin signal transduction, for example in the case of insulin receptor substrate 1 (IRS-1), PI-3 cells, protein kinases, etc., can cause insulin resistance.
- IRS-1 insulin receptor substrate 1
- PI-3 cells PI-3 cells
- protein kinases protein kinases
- cellular insulin resistance can also be brought about after cell stimulation with agonists (eg angiotensin II) which activate G protein-coupled receptors.
- agonists eg angiotensin II
- the effect of a subsequent stimulation with insulin is then significantly reduced (Polonsky, KS, Stu ⁇ s, J., and Bell, GI Non-msulin-dependent diabetes mellitus - A genetically programmed failure of the beta cell to compensate for insulin resistance.
- This G-protein activation leads to phosphorylation of IRS-1 on Sermresiduen, whereby the phosphorylation induced by Insulm on tyrosine residues is reduced. As a result, there is a reduced interaction of IRS-1 with the insulin receptor and the PI-3 kmase, i.e. to a reduced insulin effect.
- An increased activatability of G-proteins which is caused by the GNB3 825T allele and the associated splice variant Gß3-s in vivo, significantly increases the tendency to insulin resistance.
- Values correspond to n (%) for alleles and diabetes-related diseases, and mean values (SD) for continuous variables.
- the following tables Ila and Ilb show the risk for carriers of the GNB3-825T allele or carriers of the IRS1-3931A allele (simple effects, table II.1) or for carriers of both alleles (combined effects, table II.2) to develop type 2 diabetes.
- the risk is expressed here as an age-adjusted odds ratio, with the odds ratio for case-control studies roughly corresponding to the relative risk in prospective studies.
- Table II Diabetes odds ratios for carriers of the GNB3-T825 allele, the IRS1-A-3931 allele or both alleles
- Table II Diabetes odds ratios for carriers of the GNB3-T825 allele, the IRS1-A-3931 allele or both alleles
- Alleles serve to determine the propensity for a disease of type 2 diabetes in the persons concerned or a genetic cause of an already occurring one
- BMI Body Mass Index
- Overweight is about 40% genetic, but is also caused by excessive calorie intake when there is a lack of exercise.
- the Gß3-s splice variant is associated with the cellular phenotype of increased cell growth. It is also possible that the GNB3-825T allele leads to increased body growth, including Overweight, predisposed, and can exert epi and hypostatic effects.
- mice showed that the lack of the gene which codes for the IRS-1 protein, in contrast, leads to a strong delay in body growth (Tamemoto, H., Kadowaki, T., Tobe, K., Yagi, T., Sakura, H., Hayakawa, T., Terauchi, Y., Ueki, K., Kaburagi, Y., Satoh, S., Sekihara, H., Yoshioka, S., Horikoshi, H., Furuta, Y., Ikawa, Y., Kasuga, M., Yazaki, Y., and Aizawa, S. Insulin resistance and growth retardation in mice lackmg ⁇ nsul ⁇ a_receptor substrate-1.
- the GNB3-825T allele shows a significant tendency towards increased BMI compared to the GNB3-C825 allele.
- the odds ratio for the 75% quartile versus the 25% quartile is 2.5.
- the tendency to increase BMI in carriers of the GNB3-825T allele in the presence of the IRS1-3931A allele (Gly971Arg-Var ⁇ ante) is clearly counteracted.
- the presence of the GNB3-825T allele can be reliably correlated with obesity. This makes it possible to predict a tendency to obesity among those who wear this Aliei, especially those who are simultaneously lacking the IRS1-3931A allele (Gly971Arg-Var ⁇ ante).
- 825T allele carriers as described for example in DE 196 19 362 AI, have an increased risk of developing hypertension. Because overweight and obesity predispose to cardiovascular diseases to a very high degree, it was examined whether young people with normal blood pressure who carry an 825T allele already have an increased risk of overweight and obesity. For this purpose, the height and body weight of 277 young, normotensive men were determined and blood pressure measured. Obesity is defined as a BMI> 25.0 kg / m 2 and obesity as> 27.0 kg / m 2 . There is a clear correlation between BMI and blood pressure values. The frequency of the 825T allele increases linearly from the 1st to the 4th BMI quartile. For homozygous 825T O 00/15785
- Allelic carriers can calculate the following risks (odds ratios; OR) a) BMI> 25.0 kg / m 2 versus BMI ⁇ 25 kg / m 2 (overweight versus normal weight):
- coronary artery disease can be associated with G protein misregistration.
- patients with angiographically excluded coronary artery disease, with coronary artery disease (without myocardial infarction), with a myocardial infarction and with more than one myocardial infarction were examined for the presence of this Everything checked. The result is shown in Fig. 4.
- Fig. 4 shows the frequency of the GNB3-825T allele in patients with angiographically excluded coronary artery disease (CHD), with CHD (without myocardial infarction; MI), with a myocardial infarction (MI) and with more than one myocardial infarction.
- CHD angiographically excluded coronary artery disease
- MI myocardial infarction
- MI myocardial infarction
- GNB3-825T allele roughly doubles the risk for CHD and MI compared to controls without CHD.
- a particular area of application is the prediction of coronary artery disease, but also generally of cardiovascular risk (high blood pressure, etc.) in women, with the aim of applying this to targeted, post-menopausal hormone therapy with female sex hormones in order to reduce the cardiovascular risk.
- G proteins also control ion channels. More precisely, the G ⁇ and Gß ⁇ subunits of G protems control the function of diverse ion channels, for example Na + channels, Ca 2+ channels and K + channels. A precisely coordinated regulation of such ion channels is of great importance for all electrically excitable tissues, especially for the Heart ( De Waard, M., Liu, H., Walker, D., Scott, VE, Gurnett,
- the 825T allele is associated with an increased risk of hypercholesteremia.
- Genotyping at the GNB3 locus thus offers the possibility of determining an increased risk of hypercholesteremia and with the aim of treating affected persons with pharmaceuticals that can lower the elevated cholesterol.
- These include in particular inhibitors of the enzyme 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMG-CoA reductase), e.g. Simvastatm, Pravastat, Fluvastat, Lovastatm, Atorvastatin and other so-called "statins”.
- Simvastatm Simvastatm, Pravastat, Fluvastat, Lovastatm, Atorvastatin and other so-called "statins”.
- Simvastatm Simvastatm
- Pravastat Fluvastat
- Lovastatm Lovastatm
- Atorvastatins ß-sitosterol
- sitostanol esters also in food
- fibrates and other substances that lower cholesterol.
- the pharmaceuticals mentioned also act as G-Protem inhibitors and can therefore be used therapeutically for diseases associated with G-Prote fault control.
- G proteins and G protein-coupled receptors can also be found in all cells of the immune system, especially in leukocytes. Chemotaxis of cells is predominantly mediated by ß ⁇ subunits of heterotrimeric G-proteins. The GNB3-825T allele should thus lead to an increased responsiveness of the immune system, in particular to an increased immune defense.
- fMLP is a peptide that is representative of a variety of bacterial peptides and stimulates chemotactic reactions. It therefore serves as a test system for measuring chemotactic reactions of cells, which is well known to the person skilled in the art.
- the fMLP receptor is known to activate pertussis toxin-sensitive G proteins.
- Healthy carriers of the GNB3-825T allele show an increased number of leukocytes and of CD4-positive T-lymphocytes (absolute and percentage) with an increased CD4 / CD8 quotient.
- Fig. 6 shows this for the increased number of CD4 lymphocytes.
- carriers of the GNB3-825T allele also show an increased tendency to develop AIDS after an HIV infection, see also 7, also in connection with the detection of the gene change described above in chemo-receptors, in particular a ⁇ 32 deletion in the CCR5 - Receptor or in the area of the promoter of this gene.
- T-lymphocytes play an important role in the human immune system and mediate the cellular immune response there.
- increased activation of T lymphocytes has the consequence, among other things, that transplanted organs (kidney, liver, heart, lungs, pancreas, etc.) are subject to an increased immunological attack.
- FIG. 7 shows the chemotaxis of human T lymphocytes after stimulation with stromal cell-derived factor l ⁇ (SDF l ⁇ ) as an example.
- SDF l ⁇ stromal cell-derived factor l ⁇
- T lymphocytes from 825T allele carriers respond more strongly after stimulation with other chemokines, e.g. RANTES.
- chemokines e.g. RANTES.
- This behavior is explained by the fact that the chemotactic response is essentially controlled by betagamma - subunits of heterotrimeric G proteins (Arai, H., Tsou, CL, and Charo, IF Chemotaxis in a lymphocyte cell line transfected with CC chemokine receptor 2B: Evidence that directed migration is mediated by betagamma dimers released by activation of Galphai-coupled receptors. Proc. Na tl. Acad. Sci. US A. 94 (26): 14495-14499, 1997).
- T lymphocytes from 825T allele carriers The increased activation of T lymphocytes from 825T allele carriers is also manifested in an increased proliferation of these cells compared to T lymphocytes from homozygous C825 allele carriers.
- Chemotaxis expresses. This behavior manifests itself in the form of an increased cellular immune defense, which in particular
- Organs (kidney, liver, pancreas, bone marrow, heart, etc.). It can thus be predicted that 825T allele carriers tend to develop an acute or chronic rejection reaction against such transplanted organs.
- transplanted organs are from a donor who is the donor
- Organs and tissues of such donors contribute to the increased immunological attack by the recipient's cells
- the presence of an 825T allele is more responsive. There is also an increased response to acute or chronic viral infections.
- the multiplication of the HIV virus m T lymphocytes is increased by activation of chemokine receptors, the effect of which is mediated by the activation of G proteins (Kmter, A., Catanzaro, A., Monaco, J., Ruiz, M. , Justement, J., Moir, S., Arthos, J., Oliva, A., Ehler, L., Mizell, S., Jackson, R., Ostrowski, M., Hoxie, J., Offord, R. , and Fauci, AS CC-chemokines enhance the replication of T-tropic stra s of HIV-1 in CD (+) T cells: role of signal transduction. Proc. Na tl. Acad. Sci. U. S.A.
- Genotyping at the GNB3 locus thus offers the possibility that HIV-positive 825T allele carriers are associated with an increased risk of showing an increased progression of the disease, in particular with an increased multiplication of the AIDS virus. There is also a risk of the CD4 cells sinking faster.
- HIV virus sexual transmission pathway
- macrophages, monocytes and Langerhans cells are initially infected.
- the so-called "M-tropic""R5" HIV viruses use a chemokine receptor of the CCR5 type to enter these cells.
- Individuals with a homozygous CCR5 ⁇ 32 deletion are at reduced risk of HIV infection. People in whom the CCR5 ⁇ 32 allele is in heterozygous form show an extended period from HIV infection to seroconversion or a delayed progression of the disease.
- CCR5P1 CCR5 promoter
- T-tropic viruses As the disease progresses, the type of virus changes in such a way that the so-called "T-tropic” (X4) viruses predominate, which then predominantly affect CD4-positive T lymphocytes. These viruses enter via the G protein-coupled CXCR4 - chemokine receptor, to whose natural ligands i.a. Stromal cell derived factor 1 alpha
- SDF-l ⁇ belongs.
- a number of chemokines (SDF-l ⁇ , RANTES, etc.) stimulate the proliferation of T-tropic viruses in CD4-positive T cells, the signal transmission via pertussis toxin-sensitive G proteins being of crucial importance: Inhibition of the G- Protein activation by incubating cells with pertussis toxin reduces virus replication, especially when the virus count is low.
- SDF1-3 'UTR-801G-A A change in the gene which codes for SDF-1 (G ⁇ A - transition at position 801, counted by the start codon) is referred to as SDF1-3 'UTR-801G-A or as SDF1-3 ⁇ . Homozygous SDF1-3 ⁇ show a reduced progression to AIDS.
- AIDS is defined as AIDS-defining disease or CD4 cell number ⁇ 200. This AIDS definition corresponds to the AIDS definition revised in 1993 by the Center for Disease Control (CDC; Atlanta, USA).
- Fig. 9 shows the time from the first positive HIV test to AIDS diagnosis as Kaplan-Meier curves depending on the genotype.
- Fig. 9 shows that homozygous 825T allele carriers reach the end point AIDS significantly earlier than homozygous or heterozygous 825C allele carriers according to the CDC definition of 1993.
- FIG. 10 shows the time period between the first positive HIV test and a drop in the CD4 cell count below 200.
- the time course for homozygous 825T allele carriers is also drastically accelerated compared to homo- and heterozygous C825 allele carriers.
- FIG. 12 shows the period between the first positive HIV test and the maximum viral load. Again, it can be seen that 825T allele carriers have a significantly increased risk of having a maximum viral load earlier than homo- or heterozygous C825 allele carriers.
- RH relative hazard
- 95% CI 95% confidence tervall
- GNB3 G protein ß3-lower unit
- TT homozygous for 825T
- TC and CC hetero- or homozygous for C825
- CCR5 WT CCR5 wild type (absence of the ⁇ 32 deletion)
- PCR-max period up to the maximum viral load
- AIDS period until the onset of AIDS according to the CDC Defmitio from 1993
- ns not significant O 00/15785
- G proteins are also involved in the regulation of respiratory drive through hypoxia or hypercapnia (Prabhakar, NR, Kou, YR, and Kumar, GK G proteins in carotid body chemoreception. Biol. Signals 4: 271-276, 1995; Cachero, TG, Rocher, A., Rigual, RJ, and Gonzalez, C. Effects of fluoride and cholera and pertussis toxins on sensory transduction in the carotid body. Am. J. Physiol. Cell Physiol. 269: C1271-C1279, 1995).
- G proteins are significantly involved in processes that lead to bone remodeling. A changed activation of G-proteins is therefore significantly involved in the risk of developing osteoporosis (May, LG and Gay, CV Multiple G-protein involvement in parathyroid hormone regulation of acid production by osteoclasts. J. Cell Biochem. 64 (1): 161- 170, 1997; Gordeladze, JO, Lund, HW, Jablonski, G., and Bruland, OS Diverse expression of G-proteins in human sarcoma cell lines with different osteogenic potential: Evidence for the involvement of G i2 in cell proliferation. J. Cell. Biochem. 60: 95-106, 1996).
- the erection of the penis after sexual stimulation is caused by an increased blood flow combined with a reduced blood flow.
- the mechanisms required for increased blood flow include the effects of hormones, the effects of which are mediated by G proteins.
- homozygous C825 allele carriers have a 4-fold higher risk than homozygous 825T allele carriers, and double the risk of heterozygous 825T allele carriers of erectile dysfunction (impotence). Furthermore, the risk for heterozygous 825T allele carriers is roughly doubled compared to homozygous 825T allele carriers.
- Carriers of the 825T allele often have impaired thyroid function and must be treated with thyroid hormones (e.g. thyroxine).
- thyroid hormones e.g. thyroxine
- the detection of an 825T allele is therefore suitable for predicting an increased risk of death for the unborn child of pregnant women with a gestational pregnancy.
- Gestational gestosis is a serious illness that is associated with high blood pressure, edema and protein excretion. Gestosis is associated with a considerable risk for the pregnant woman, but especially for the unborn child. There were 188 women without gestational and 191 women with
- GNB3 TC or TT genotype
- the homozygous presence of the 298Asp variant in eNOS leads to a 10-fold increased risk of a gestational pregnancy.
- the heterozygous presence of the 298Asp variant in eNOS leads to a 2-fold increased risk of a gestational pregnancy.
- Another object of the present invention is the pharmacogenetics of the GNB3-825T allele, ie the ability to use the genotype to predict the effect of pharmaceuticals. Most pharmaceuticals (hormones, receptor agonists) exert their effect via receptors that couple to G-Proteme. Antagomsten block the hormone-receptor interaction.
- genotyping at the GNB3 locus is suitable for predicting the effectiveness of pharmaceuticals based on the genotype.
- This relates to the responsiveness in vivo to hormones, transmitters (also neurotransmitters) or pharmaceuticals which activate those G-Protem heterotrimers which contain the G-Protem subunits Gß3 and Gß3s.
- This is accompanied by the prediction of a reduced effectiveness of hormones, neurotransmitters or pharmaceuticals which stimulate the G protein subunit G ⁇ S, e.g. ß-adrenergic agonists.
- This also applies when the detection of the Argl ⁇ Gly variant and the Gln27Glu variant in the ⁇ 2-adrenergic receptor is used simultaneously.
- the presence of the GNB3-825T allele therefore indicates a changed pharmacogenetics and should be considered when selecting a specific form of therapy (pharmacological or non-pharmacological) and when dosing drugs or hormones for hypertension, diabetes mellitus, coronary heart disease, acute myocardial infarction with or without cardiac arrhythmia, cardiac arrhythmia, graft rejection, erectile dysfunction etc. are taken into account.
- the presence of the GNB3-825T allele also allows prediction of the effectiveness of the administration of erythropoietm on blood formation and prediction of the development of hypertension under this therapy, as well as the prediction of the risk of hypertension under immunosuppressive therapy (eg with cyclosporm) to develop. 15.2 Agonists at the serotonin receptor
- the stroke volume is reduced on average by 3 ml with homozygous C825 allele carriers, but by 12 ml with homo- and heterozygous 828T allele carriers (p ⁇ 0.05).
- the GNB3 C825T status the pharmacological-physiological effect of a blockade of ⁇ -adrenergic receptors can be predicted. This doesn't just apply to non-selective ß-blockers like that Propanolol called, but on all ß-adrenoceptor blockers, including selective ß1- and ß2-receptor blockers.
- prostaglandin El is injected into the corpus cavernosum for diagnostic clarification, but also in order to possibly initiate long-term therapy.
- Prostaglandin El activates the adenylyzyclase, and the subsequent formation of cAMP relaxes smooth vascular muscle cells and thus induces an increased arterial bleeding and thus the erection of the penis.
- the degree of erection can be quantified using a point system (score 0-5). Scores 4 and 5 correspond to a smooth erection sufficient for penetration, while scores ⁇ 4 are not sufficient.
- homozygous 825T allele carriers can be assigned an approximately double risk of not responding to the injection with prostaglandin El with a sufficient erection. 16.
- Gß3 inhibitors
- Another object of the present invention is the production of pharmaceuticals which inhibit the Gß3s splice variant.
- Gß3s subunit is suitable alone or in combination with different G ⁇ and G ⁇ subunits in Sf9 insect cells, in other cells suitable for transfection, or the use of purified G ⁇ and G ⁇ ß3s subunits in a reconstitution system Presence of a G-Protem-coupled receptor.
- Such systems can e.g.
- test system can also be used as a "high-throughput screen mg system" for testing a large number of substances.
- Gß3s-2 a further splice variant of the Gß3s subunit was found in human heteromeric G-proteins, which is designated Gß3s-2.
- neutrophils from humans were homozygous for the C825 in GNB3 (CC genotype) or heterozygous for the C825T polymorphism (TC genotype).
- the mRNA was extracted using standard methods and rewritten into cDNA using the reverse transcriptase reaction.
- the cDNA encoding Gß3 was amplified by a polymerase chain reaction. The following primers were used:
- primers The location of these primers is chosen such that e primer is in the region of exon 9 of the gene, while the other primer in exon 11 is in the 3 'untranslated region.
- PCR products were separated in a 2.5% agarose gel in 0.5 x TBE plus 0.1 ⁇ m / ml ethidium bromide and visualized under UV light.
- PBR322 DNA / Alu I was used as the large marker.
- the truncated PCR product was found to represent a new splice variant of the Gß3 gene. A representation of this can be found in Appendix 3.
- the complete sequence of the cDNA is shown, as previously used by Levine et al. (Levine, MA, Smallwood, PM, Moen, PT, Jr., Helman, LJ, and Ahn, TG Molecular cloning of beta 3 subunit, a third form of the G protein beta-subunit polypeptide. Proc.Natl.Acad Sci. USA 87 (6): 2329-2333, 1990). The numbering originally given by these authors is used here maintained so that the start codon ATG is assigned to position 6 of the nuclear sequence.
- the newly described deletion occurs in exon 10 of the gene, closes the previously described C825T polymorphism with em and comprises 129 nucleotides, which corresponds to a loss of 43 amino acids at the protein level (referred to in Appendix 3 as "deletion in Gß3s-2") .
- the open reading frame is retained.
- Nucleotides 708-836 or nucleotides 712-840 can be omitted. If the ATG of the start codon is set to 1, the nucleotides 702-830 and 706-834 are omitted. Knowing the exact location of this deletion is insignificant for the new cDNA and ammosaur sequences of Gß3s-2.
- Appendix 3 also shows the polymorphism sites C825T and C1423T. Because of the use of the original Levine et al. Appendix 3 shows the C825T polymorphism at position 831 and the C1243T polymorphism at position 1249. By further sequencing, a new T657A polymorphism was found, which occurs in approximately 1-3% of all Caucasians.
- the new cDNA sequence of Gß3s-2 is shown in Appendix 4 combined with the amino acid sequence.
- G-protein ß subunits belong to the family of WD repeat proteins. Such ß subunits are highly conserved. It is known that such ß subunits form a spatial structure similar to that of a propeller with seven propeller blades (Sondek, J., Böhm, A., Lambright, DC, Hamm, HE and Sigler, PB Crytal structure of a G protein ß ⁇ dimer at 2.1 ⁇ resolution. Nature 379: 369-374, 1996). Due to the deletion occurring in Gß3s-2, it can be predicted that a new ⁇ -subunit will arise which, analogous to Gß3-s, has only six instead of seven such rotor blades. This is shown schematically in Fig. 14, showing at the same time the deletion previously found in Gß3-s
- G-protein heterotrimers which contain Gß3s-2 are functionally active.
- the Sf9 insect cell system was used (Siffert, W. Rosskopf, D., Siffert, G., Busch, S., Moritz, A., Erbel, R., Sharma, AM, Ritz, E. , Wichmann, HE, Jakobs, KH, and Horsthemke, B. Association of a human G-protem beta3 subunit variant with hypertension. Nat.Genet. 18 (1): 45-48, 1998).
- the cells were transfected with G ⁇ 2, G ⁇ l2 and the m2 muscarinic acetylchol receptor.
- ⁇ -subunits of heterotrimeric G proteins can stimulate different isoforms of the phospholipase Cß.
- This enzyme cleaves phospholipids, eg phosphatdylinositol-4, 5-bisphosphate to the "second messenger” molecules inos ⁇ tol-1, 4, 5-trisphosphate (IP3) and 1,2-diacylglycerol (DAG), IP3 causes the release of calcium Ions from intracellular stores, while DAG activate different isoforms of protein kinase C.
- IP3 5-trisphosphate
- DAG 1,2-diacylglycerol
- the activation of phospholipase C is therefore an essential step in cell activation. It was investigated whether ß ⁇ units containing Gß3s-2 can activate the phospholipase Cß3 (PLCß3).
- the COS-7 cell system was used, which is widely used in the generally accessible literature for the transient transfection of proteins. These cells were identified with the PLCß3, G ⁇ l2 and transfected different Gß subunits. The cells were pretreated with radioactively labeled [3H] inositol. The formation of inositol phosphates (IP) was quantified according to standard methods, the amount of IP formed being a measure of the activation of the PLC. As shown in Fig. 16, ⁇ dimers containing Gß3, Gß3s or Gß3s-2 can activate the PLCß3. For comparison, the activation of the PLCß3 after transfection of Gßl is also shown.
- IP inositol phosphates
- Gß3s-2 is capable of stimulating typical cellular effector systems. It is therefore a fully functional protein, whereby persons who carry an 825T allele and express this protein are associated with an increased cellular activatability.
- the Gß3s-2 splice variant found can be used advantageously by producing corresponding proteins with the aim of developing or testing chemicals which inhibit the protein or prevent its interaction with G-protein ⁇ or ⁇ subunits.
- the Gß3s-2 splice variant can also be expressed in human or animal cells or tissues for therapeutic purposes.
- nucleic acid sequence of the cDNA shown in Appendix 3 Another use of the nucleic acid sequence of the cDNA shown in Appendix 3 is to develop gene probes for the detection of this nucleic acid sequence. Furthermore, an antisense construct can be found in cells and tissues
- Antisense constructs can also be introduced into such cells or tissues with the aid of different vectors (e.g. genetically modified viruses).
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Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU60799/99A AU6079999A (en) | 1998-09-10 | 1999-09-06 | Gene modification in the gene for the die gbeta3-sub-unit of human g-protein |
| JP2000570312A JP2002525051A (ja) | 1998-09-10 | 1999-09-06 | ヒトgタンパク質のgベータ3サブユニットのための遺伝子内の遺伝子変更 |
| DE59913114T DE59913114D1 (de) | 1998-09-10 | 1999-09-06 | GENVERÄNDERUNG IM GEN FÜR DIE G DOLLAR g(b)3-UNTEREINHEIT DES HUMANEN G-PROTEINS |
| EP99947277A EP1112362B1 (de) | 1998-09-10 | 1999-09-06 | GENVERÄNDERUNG IM GEN FÜR DIE G$g(b)3-UNTEREINHEIT DES HUMANEN G-PROTEINS |
| CA2342966A CA2342966C (en) | 1998-09-10 | 1999-09-06 | Gene alteration in the gene for the gbeta3 subunit of the human g protein |
| US09/803,653 US6924100B2 (en) | 1998-09-10 | 2001-03-12 | Gene alteration in the gene for the Gβ3-subunit of the human G protein |
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19841299A DE19841299A1 (de) | 1998-09-10 | 1998-09-10 | Genveränderung im Gen für die Gß3-Untereinheit des humanen G-Proteins |
| DE19841299.1 | 1998-09-10 | ||
| DE19904825.8 | 1999-02-05 | ||
| DE19904825 | 1999-02-05 | ||
| DE19912049 | 1999-03-18 | ||
| DE19912049.8 | 1999-03-18 | ||
| DE19914229 | 1999-03-29 | ||
| DE19914229.7 | 1999-03-29 | ||
| DE19919989.2 | 1999-04-30 | ||
| DE19919989 | 1999-04-30 | ||
| DE19923539 | 1999-05-21 | ||
| DE19923539.2 | 1999-05-21 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US09/803,653 Continuation-In-Part US6924100B2 (en) | 1998-09-10 | 2001-03-12 | Gene alteration in the gene for the Gβ3-subunit of the human G protein |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2000015785A2 true WO2000015785A2 (de) | 2000-03-23 |
| WO2000015785A3 WO2000015785A3 (de) | 2000-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| PCT/EP1999/006534 Ceased WO2000015785A2 (de) | 1998-09-10 | 1999-09-06 | GENVERÄNDERUNG IM GEN FÜR DIE Gβ3-UNTEREINHEIT DES HUMANEN G-PROTEINS |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6924100B2 (de) |
| EP (1) | EP1112362B1 (de) |
| JP (1) | JP2002525051A (de) |
| AT (1) | ATE317436T1 (de) |
| AU (1) | AU6079999A (de) |
| CA (1) | CA2342966C (de) |
| DE (1) | DE59913114D1 (de) |
| DK (1) | DK1112362T3 (de) |
| WO (1) | WO2000015785A2 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001057246A1 (de) * | 2000-02-03 | 2001-08-09 | Winfried Siffert | VERWENDUNG EINER GENVERÄNDERUNG IM GEN FÜR DIE β3-UNTEREINHEIT DES HUMANEN G-PROTEINS |
| EP0939833B1 (de) * | 1996-05-14 | 2002-01-16 | Winfried Siffert | VERWENDUNG EINER GENVERÄNDERUNG IM GEN FÜR DIE HUMANE G-PROTEIN beta3-UNTEREINHEIT ZUR DIAGNOSTIK VON ERKRANKUNGEN |
| WO2004029243A1 (ja) * | 2002-09-25 | 2004-04-08 | Nagoya Industrial Science Research Institute | 高血圧のリスク診断方法 |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6025154A (en) | 1995-06-06 | 2000-02-15 | Human Genome Sciences, Inc. | Polynucleotides encoding human G-protein chemokine receptor HDGNR10 |
| US7175988B2 (en) | 2001-02-09 | 2007-02-13 | Human Genome Sciences, Inc. | Human G-protein Chemokine Receptor (CCR5) HDGNR10 |
| US7393934B2 (en) | 2001-12-21 | 2008-07-01 | Human Genome Sciences, Inc. | Human G-protein chemokine receptor (CCR5) HDGNR10 |
| WO2005031341A2 (en) * | 2003-09-29 | 2005-04-07 | Pfizer Health Ab | Methods for predicting development of insulin resistance |
| EP1723432A1 (de) * | 2004-02-05 | 2006-11-22 | Medtronic, Inc. | Verfahren und vorrichtung zur identifizierung von patienten in gefahr durch lebensbedrohliche arrhythmien |
| US7608458B2 (en) * | 2004-02-05 | 2009-10-27 | Medtronic, Inc. | Identifying patients at risk for life threatening arrhythmias |
| WO2005105841A2 (en) | 2004-03-12 | 2005-11-10 | Human Genome Sciences, Inc. | Human g-protein chemokine receptor (ccr5) hdgnr10 |
| US8027791B2 (en) * | 2004-06-23 | 2011-09-27 | Medtronic, Inc. | Self-improving classification system |
| US8335652B2 (en) * | 2004-06-23 | 2012-12-18 | Yougene Corp. | Self-improving identification method |
| US20050287574A1 (en) * | 2004-06-23 | 2005-12-29 | Medtronic, Inc. | Genetic diagnostic method for SCD risk stratification |
| CA2646266A1 (en) * | 2006-04-10 | 2007-10-25 | Nitromed, Inc. | Assessment of heart failure risk using genetic assessment of g-protein beta-3 subunit polymorphism |
| US20090136954A1 (en) * | 2007-11-14 | 2009-05-28 | Medtronic, Inc. | Genetic markers for scd or sca therapy selection |
| US20110143956A1 (en) * | 2007-11-14 | 2011-06-16 | Medtronic, Inc. | Diagnostic Kits and Methods for SCD or SCA Therapy Selection |
| EP2430184A2 (de) * | 2009-05-12 | 2012-03-21 | Medtronic, Inc. | Sca-risikostratifizierung durch vorhersage des ansprechens von patienten auf antiarrhythmika |
| EP2463384A3 (de) | 2010-12-07 | 2013-03-13 | Medtronic, Inc. | Diagnosekits, genetische Marker und Verfahren zur SCD- oder SCA-Therapieauswahl |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5766851A (en) * | 1995-05-19 | 1998-06-16 | The Johns Hopkins University School Of Medicine | Susceptibility gene for obesity and type II diabetes mellitus |
| DE19619362A1 (de) * | 1996-05-14 | 1997-11-20 | Basf Ag | Verwendung einer Genveränderung im Gen für humanes G-Protein beta-3-Untereinheit zur Diagnostik von Erkrankungen |
| DE19637518A1 (de) * | 1996-09-13 | 1998-04-09 | Winfried Siffert | PTX-sensitive G-Proteine, ihre Herstellung und Verwendung |
-
1999
- 1999-09-06 JP JP2000570312A patent/JP2002525051A/ja active Pending
- 1999-09-06 AT AT99947277T patent/ATE317436T1/de not_active IP Right Cessation
- 1999-09-06 CA CA2342966A patent/CA2342966C/en not_active Expired - Fee Related
- 1999-09-06 DE DE59913114T patent/DE59913114D1/de not_active Expired - Lifetime
- 1999-09-06 AU AU60799/99A patent/AU6079999A/en not_active Abandoned
- 1999-09-06 DK DK99947277T patent/DK1112362T3/da active
- 1999-09-06 EP EP99947277A patent/EP1112362B1/de not_active Expired - Lifetime
- 1999-09-06 WO PCT/EP1999/006534 patent/WO2000015785A2/de not_active Ceased
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0939833B1 (de) * | 1996-05-14 | 2002-01-16 | Winfried Siffert | VERWENDUNG EINER GENVERÄNDERUNG IM GEN FÜR DIE HUMANE G-PROTEIN beta3-UNTEREINHEIT ZUR DIAGNOSTIK VON ERKRANKUNGEN |
| WO2001057246A1 (de) * | 2000-02-03 | 2001-08-09 | Winfried Siffert | VERWENDUNG EINER GENVERÄNDERUNG IM GEN FÜR DIE β3-UNTEREINHEIT DES HUMANEN G-PROTEINS |
| WO2004029243A1 (ja) * | 2002-09-25 | 2004-04-08 | Nagoya Industrial Science Research Institute | 高血圧のリスク診断方法 |
| US7572576B2 (en) | 2002-09-25 | 2009-08-11 | Nagoya Industrial Science Research Institute | Method of predicting genetic risk for hypertension |
| CN1685041B (zh) * | 2002-09-25 | 2010-05-12 | 财团法人名古屋产业科学研究所 | 高血压风险的诊断方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6079999A (en) | 2000-04-03 |
| EP1112362B1 (de) | 2006-02-08 |
| DK1112362T3 (da) | 2006-06-19 |
| US20020086297A1 (en) | 2002-07-04 |
| CA2342966A1 (en) | 2000-03-23 |
| CA2342966C (en) | 2011-05-03 |
| EP1112362A2 (de) | 2001-07-04 |
| JP2002525051A (ja) | 2002-08-13 |
| ATE317436T1 (de) | 2006-02-15 |
| WO2000015785A3 (de) | 2000-11-09 |
| DE59913114D1 (de) | 2006-04-20 |
| US6924100B2 (en) | 2005-08-02 |
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