GAUCHER DISEASE AS A PARADIGM OF CURRENT ISSUES REGARDING SINGLE-GENE MUTATIONS OF HUMANS

被引:81
作者
BEUTLER, E
机构
[1] Dept. of Molecular/Experimental Med., Scripps Research Institute, La Jolla, CA 92037
关键词
D O I
10.1073/pnas.90.12.5384
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Gaucher disease is a glycolytic storage disease caused by a deficiency in activity of the catabolic enzyme glucocerebrosidase. Over 35 different mutations have been documented, including missense and nonsense point mutations, splicing mutations, deletions and insertions, a fusion gene, and examples of gene conversion. Gaucher disease is most common in the Ashkenazi Jewish population, in which just five of the mutations in this population account for 98% of the disease-producing alleles. Each of these mutations is found in the context of a single haplotype, a finding consistent with a single origin of each mutation. Although it is clear that these mutations provide a selective advantage in the Jewish population and thus constitute a balanced polymorphism, the nature of the advantage is unknown. Gaucher disease can be treated symptomatically, by administration of the missing enzyme, by allogeneic bone marrow transplantation, and potentially by gene transfer into hematopoietic stem cells. Increasing understanding of this disease has, as in other genetic disorders, created a host of social and ethical dilemmas regarding matters such as the cost of treatment for rare diseases and the advantages and disadvantages of population-targeted genetic screening.
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页码:5384 / 5390
页数:7
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