Frequency of Mutations of Insulin Receptor Gene in Japanese Patients With NIDDM
| Autor: | Yousuke Ebina, Naotake Hashimoto, Takashi Murakami, Hiroyuki Sano, F Kanai, Masaharu Kan, M. Todaka, Mitsuru Iida, Hideaki Jinnouchi, S. Kamohara, Takanobu Imanaka, Hideichi Makino, Sho Yoshida, Tetsuo Ohnishi, Kimio Ito, Yasuhiko Nishioka, Susumu Kagawa, Hideki Hayashi |
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| Rok vydání: | 1995 |
| Předmět: |
Male
Threonine Genetic Linkage Endocrinology Diabetes and Metabolism Mutant medicine.disease_cause Polymerase Chain Reaction Phosphatidylinositol 3-Kinases Exon Japan Chlorocebus aethiops Insulin Missense mutation Genetics education.field_of_study Mutation Alanine Exons Middle Aged Recombinant Proteins Pedigree Phosphotransferases (Alcohol Group Acceptor) Female Adult Macromolecular Substances Molecular Sequence Data Population Biology Transfection Cell Line Internal Medicine medicine Animals Humans Point Mutation Amino Acid Sequence Cysteine education Gene Aged DNA Primers Base Sequence Point mutation DNA Receptor Insulin Kinetics Insulin receptor Diabetes Mellitus Type 2 biology.protein Tyrosine |
| Zdroj: | Diabetes. 44:1081-1086 |
| ISSN: | 1939-327X 0012-1797 |
| DOI: | 10.2337/diab.44.9.1081 |
| Popis: | To examine the prevalence of abnormalities in the insulin receptor structure gene in Japanese Patients with non-insulin-dependent diabetes mellitus (NIDDM), a population of 51 patients with NIDDM was screened for mutations in this gene. Patient genomic DNAs of both alleles corresponding to 22 exons of the gene were amplified by polymerase chain reaction (PCR). The PCR products on pUC19 were sequenced. Three patients with heterozygous missense mutation Thr831→Ala831 in exon 13 and one patient with heterozygous missense mutation Tyr1334→Cys1334 in exon 22 of the ²-subunits were identified. Linkage analysis of one of the families plus statistical studies showed that the mutation Thr831→Ala831 is possibly responsible for the onset of NIDDM. In COS cells transiently expressing both mutant receptor cDNAs and a cDNA of a Mr 85,000 regulatory subunit of phosphatidylinositol 3-kinase (PI 3-kinase), the mutation Tyr1334→Cys1334 impaired binding of the receptor with the Mr 85,000 subunit of PI 3-kinase, but linkage analysis of the family showed that the mutation did not cosegregate with NIDDM in the pedigree. Therefore, one missense mutation (Thr831→Ala831) in the insulin receptor, as found in three patients, is possibly involved in the etiology of a subset of the 51 NIDDM patients. |
| Databáze: | OpenAIRE |
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