Molecular evidence for new mutation at the hprt locus in Lesch-Nyhan patients.

Molecular evidence for new mutation at the hprt locus in Lesch-Nyhan patients.
复制标题

Lesch-Nyhan 患者 hprt 位点新突变的分子证据。

DOI:
10.1038/310412a0
复制
发表时间:
1984
期刊:
影响因子:
64.8
通讯作者:
Caskey,CT
Caskey,CT
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yang,TP;Patel,PI;Chinault,AC;Stout,JT;Jackson,LG;Hildebrand,BM;Caskey,CT

文献摘要

参考文献

相似文献

次黄嘌呤-鸟嘌呤磷酸核糖转移酶(HPRT; EC2.4.2.8)是人类一个X连锁基因编码的嘌呤代谢补救酶,部分HPRT缺乏与痛风性关节炎有关,而缺乏活性则导致Lesch-Nyhan综合征(L-N)。L-N患者不能繁殖,杂合状态似乎不会产生选择性的死亡1。因此,Halfman原理2预测hprt位点的新突变必须频繁发生,以使L-N综合征在人群中得以维持。这种新突变的不断引入预计会导致遗传病变的异质性集合,其中一些可能是新的1。正如我们在这里报告的,从28例患者的初始调查中选出的7例L-N患者的hprt基因突变已经被表征,并且所有人都被发现明显不同,正如预测的那样。通过对四代家庭成员的DNA分析,已经确定了一种不寻常突变的起源。对hprt基因座新突变起源的进一步分子分析应有助于解决男性和女性hprt突变频率明显差异的问题3 -5。
Hypoxanthine-guanine phosphoribosyltransferase (HPRT; EC2.4.2.8), which functions in the metabolic salvage of purines, is encoded by an X-linked gene in man. Partial HPRT deficiencies are associated with gouty arthritis, while absence of activity results in Lesch-Nyhan syndrome (L-N). L-N patients fail to reproduce and the heterozygous state appears to confer no selective advantage1. Thus, Haldane's principle2predicts that new mutations at thehprtlocus must occur frequently in order for L-N syndrome to be maintained in the population. This constant introduction of new mutations would be expected to result in a heterogeneous collection of genetic lesions, some of which may be novel1. As we report here, the mutations in thehprtgene of seven L-N patients, selected from an initial survey of 28 patients, have been characterized and all were found to be distinctly different, as predicted. The origin of one unusual mutation has been identified by analysis of DNA from four generations of family members. Further molecular analysis of the origin of new mutations at thehprtlocus should aid in resolving the issue of an apparent difference in the frequency ofhprtmutations in males and females3–5.
DOI: 10.1016/0024-3205(81)90746-3
发表时间: 1981-03
期刊: Life sciences
影响因子: 6.1
作者:
Eiji Takeda;George Weber
通讯作者: Eiji Takeda;George Weber
噻唑呋林诱导肝癌 3924A 中 NAD 含量的选择性降低。
DOI: 10.1016/0006-291x(84)90481-9
发表时间: 1984
影响因子: 3.1
作者:
Liepnieks,JJ;Faderan,MA;Lui,MS;Weber,G
通讯作者: Weber,G
大鼠肝癌中胸苷激酶浓度增加。
DOI: 10.1016/s0006-291x(83)80148-x
发表时间: 1983
影响因子: 3.1
作者:
Lai,MH;Weber,G
通讯作者: Weber,G
大鼠肝癌中还原和氧化烟酰胺腺嘌呤二核苷酸磷酸含量降低。
DOI: --
发表时间: 1982
期刊: Cancer biochemistry biophysics
影响因子: --
作者:
Ross,DA;Jackson,RC;Weber,G;Morris,HP
通讯作者: Morris,HP
DOI: --
发表时间: 1983-08
期刊: Cancer research
影响因子: 11.2
作者:
G. Weber
通讯作者: G. Weber