The gap junctional protein INX-14 functions in oocyte precursors to promote C. elegans sperm guidance.
The gap junctional protein INX-14 functions in oocyte precursors to promote C. elegans sperm guidance.
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DOI:
10.1016/j.ydbio.2011.08.014
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发表时间:
2011-11-01
影响因子:
2.7
通讯作者:
Miller MA
中科院分区:
文献类型:
--
作者:
Edmonds JW;McKinney SL;Prasain JK;Miller MA
Innexins are the subunits of invertebrate gap junctions. Here we show that the innexin INX-14 promotes sperm guidance to the fertilization site in the C. elegans hermaphrodite reproductive tract. inx-14 loss causes cell nonautonomous defects in sperm migration velocity and directional velocity. Results from genetic and immunocytochemical analyses provide strong evidence that INX-14 acts in transcriptionally active oocyte precursors in the distal gonad, not in transcriptionally inactive oocytes that synthesize prostaglandin sperm-attracting cues. Somatic gonadal sheath cell interaction is necessary for INX-14 function, likely via INX-8 and INX-9 expressed in sheath cells. However, electron microscopy has not identified gap junctions in oocyte precursors, suggesting that INX-14 acts in a channel-independent manner or INX-14 channels are difficult to document. INX-14 promotes prostaglandin signaling to sperm at a step after F-series prostaglandin synthesis in oocytes. Taken together, our results support the model that INX-14 functions in a somatic gonad/germ cell signaling mechanism essential for sperm function. We propose that this mechanism regulates the transcription of a factor(s) that modulates prostaglandin metabolism, transport, or activity in the reproductive tract.
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影响因子:
3.7
作者:
Guidobaldi HA;Teves ME;Uñates DR;Anastasía A;Giojalas LC
通讯作者:
Giojalas LC
DOI:
10.1186/1478-811x-7-4
发表时间:
2009-03-12
期刊:
Cell communication and signaling : CCS
影响因子:
--
作者:
Dbouk HA;Mroue RM;El-Sabban ME;Talhouk RS
通讯作者:
Talhouk RS
影响因子:
4
作者:
Gittens, JEI;Kidder, GM
通讯作者:
Kidder, GM
影响因子:
2.5
作者:
Altun, Zeynep F.;Chen, Bojun;Wang, Zhao-Weng;Hall, David H.
通讯作者:
Hall, David H.
影响因子:
4.8
作者:
Bevans, CG;Kordel, M;Harris, AL
通讯作者:
Harris, AL