C. elegans HLH-2/E/Daughterless controls key regulatory cells during gonadogenesis.

C. elegans HLH-2/E/Daughterless controls key regulatory cells during gonadogenesis.
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DOI:
10.1016/j.ydbio.2009.04.015
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发表时间:
2009-07-01
影响因子:
2.7
通讯作者:
Kimble, Judith
Kimble, Judith
中科院分区:
生物学3区
文献类型:
--
作者:
Chesney, Michael A.;Lam, Ngan;Morgan, Dyan E.;Phillips, Bryan T.;Kimble, Judith

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梭线虫远端细胞(DTC)为两性和雄性的生殖干细胞提供了一个小生境。雌雄同体的远端细胞(hDTC)也提供“领导者”功能,以控制性腺的伸长和形状,而在男性中,领导者功能分配给连接细胞(LC)。因此,男性远端细胞(mDTC)作为一个利基,但不是作为一个领导者。梭E/Daughterless的秀丽线虫同源物HLH-2先前与hDTC特化有关。在这里,我们报告说,HLH-2也是至关重要的hDTC的维护,hDTC的利基功能和hDTC表达的滞后2/DSL配体报告。我们还发现,HLH-2的功能在男性直接连接细胞的规范,并促进两个mDTC的维护和mDTC的利基功能。我们的结论是,HLH-2的功能,在两种性别,以促进领导细胞的规格和DTC的生态位功能。
The C. elegans distal tip cell (DTC) provides a niche for germline stem cells in both hermaphrodites and males. The hermaphrodite distal tip cell (hDTC) also provides “leader” function to control gonadal elongation and shape, while in males, leader function is allocated to the linker cell (LC). Therefore, the male distal tip cell (mDTC) serves as a niche but not as a leader. The C. elegans homolog of E/Daughterless, HLH-2, was previously implicated in hDTC specification. Here we report that HLH-2 is also critical for hDTC maintenance, hDTC niche function and hDTC expression of a lag-2/DSL ligand reporter. We also find that HLH-2 functions in males to direct linker cell specification and to promote both mDTC maintenance and the mDTC niche function. We conclude that HLH-2 functions in both sexes to promote leader cell specification and DTC niche function.
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