编码神经生长因子高亲和力受体的TRKA (NTRK1)基因在先天性无汗性疼痛不敏感(CIPA)家族中的突变和多态性分析
文章的细节
-
引用
-
三ura Y, Mardy S, Awaya Y, Nihei K, Endo F, Matsuda I, Indo Y
编码神经生长因子高亲和力受体的TRKA (NTRK1)基因在先天性无汗性疼痛不敏感(CIPA)家族中的突变和多态性分析
热学杂志,2000,26(1):116-24。
- PubMed ID
-
10982191 (PubMed视图]
- 摘要
-
人类TRKA基因编码神经生长因子高亲和力酪氨酸激酶受体。先天性疼痛无汗不敏感(CIPA)是一种常染色体隐性遗传疾病,来自不同国家的报道,其特征是无汗(无法出汗),对有害刺激缺乏反应和智力迟钝。我们发现TRKA是导致CIPA的基因。我们研究了来自23个日本CIPA家族的46条CIPA染色体的TRKA。包括先前报道的三个,并确定了11个新的突变。四个(L93P, G516R, r648c和D668Y)是错义突变,导致TRK家族中保守位置的氨基酸替换,包括TRKA, TRKB和TRKC。其中3个(S131 fs、L579 fs和D770 fs)是移码突变。其中三个(E164X、Y359X和R596X)是无义突变。另一种是内含子分支位点(IVS7-33T—>A)突变,在体外引起异常剪接。我们还报道了8个基因内多态性位点的特征,包括可变二核苷酸重复和7个单核苷酸多态性,并描述了106条正常染色体和46条CIPA染色体中这些位点上等位基因的单倍型关联。 More than 50% of CIPA chromosomes share the frameshift mutation (R548 fs) that we described earlier. This mutation apparently shows linkage disequilibrium with a rare haplotype in normal chromosomes, strongly suggesting that it is a common founder mutation. These findings represent the first extensive analysis of CIPA mutations and associated intragenic polymorphisms; they should facilitate the detection of CIPA mutations and aid in the diagnosis and genetic counseling of this painless but severe genetic disorder with devastating complications.