MUS-POSCHIAVINUS Y-CHROMOSOME IN THE C57BL/6J MURINE GENOME CAUSES SEX REVERSAL

MUS-POSCHIAVINUS Y-CHROMOSOME IN THE C57BL/6J MURINE GENOME CAUSES SEX REVERSAL
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DOI:
10.1126/science.7089579
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发表时间:
1982-01-01
期刊:
影响因子:
56.9
通讯作者:
MORROW, KE
MORROW, KE
中科院分区:
综合性期刊1区
文献类型:
--
作者:
EICHER, EM;WASHBURN, LL;MORROW, KE

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当来自 M. poschiavinus (YPOS) 的 Y 染色体转移到 C57BL/6J 基因组上时,XY 个体发育为具有 2 个卵巢的雌性,或雌雄同体。没有 XY 个体发育出正常的睾丸。尽管 C57BL/6J-YPOS XY 雌性很少有生育能力,但大多数具有正常雄性生殖器的雌雄同体都会产生后代。 M. poschiavinus Y 染色体携带一种与 C57BL/6J 近交株中存在的 Y 连锁睾丸决定基因座不同的形式。该基因与 C57BL/6J 基因组的常染色体或 X 连锁睾丸决定位点异常相互作用,以阻止正常的睾丸分化。 Y连锁睾丸决定基因的分化可能与哺乳动物的物种形成有关。
When the Y chromosome from M. poschiavinus (YPOS) is transferred onto the C57BL/6J genome, XY individuals develop as females with 2 ovaries, or as hermaphrodites. No XY individual develops normal testes. Although C57BL/6J-YPOS XY females are rarely fertile, most hermaphrodites with normal male genitalia sire offspring. The M. poschiavinus Y chromosome carries a form of the Y-linked testis-determining locus different from that present in the C57BL/6J inbred strain. This gene interacts abnormally with autosomal or X-linked testis-determining loci of the C57BL/6J genome to prevent normal testicular differentiation. Divergence of the Y-linked testis-determining gene may be involved in mammalian speciation.