核移植与线粒体

线粒体是哺乳动物的产能、供能细胞器，与生长、发育、衰老和凋亡等多种细胞事件及疾病有关。哺乳动物核移植可能导致克隆胚胎及后代中线粒体的杂合性，从而影响到个体的表型甚至导致线粒体疾病。文章阐明了哺乳动物中线粒体的生物学功能及遗传特性，并分析了核移植中供体细胞和受体卵胞质两种来源的线粒体在同种胚胎细胞核移植、同种及异种体细胞核移植重构胚发育进程中的变化以及可能影响线粒体杂合性的一些因素，对其可能导致的线粒体疾病及解决方法进行了简单的阐述。

Nuclear Transfer and Mitochondria

Mitochondria, which can produce and supply energy for mammals, are involved in many cellular events of growth, development, aging, apoptosis as well as diseases. Nuclear transfer could result in mitochondria heteroplasmy in cloned embryos and offspring, affecting the phenotypes of the individuals and even causing mitochondrial diseases. This paper has expounded the biological functions and the hereditary characteristics of the mitochondria in mammals, and analyzed the change of donor and recipient mitochondria in embryos and offspring derived from intraspecific and interspecific embryonic or somatic nuclear transfer as well as several factors which might influence mitochondrial heteroplasmy in the process of nuclear transfer. The mitochondrial diseases it may cause and their solutions are also briefly presented.