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首页> 外文期刊>The international journal of developmental biology >Blood vessel/epicardial substance (bves) expression, essential for embryonic development, is down regulated by Grk/EFGR signalling
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Blood vessel/epicardial substance (bves) expression, essential for embryonic development, is down regulated by Grk/EFGR signalling

机译:胚胎发育所必需的血管/心外膜物质(bves)表达受Grk / EFGR信号下调

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摘要

The Pop1/Bves (blood vessel/epicardial substance) gene is a member of the popeye gene family recently identified in various species. It encodes a potential transmembrane glycoprotein and is a cell adhesion molecule present in skeletal and cardiac muscle and epithelia. We isolated the Drosophila homologue of Bves (DmBves) and found, using in situ hybridisation to RNA in ovaries, that bves is expressed in all follicular epithelial cells surrounding the oocyte at stage 10, except those in very posterior and anterior-dorsal regions adjacent to the oocyte. We show that the repression of bves expression in anterior-dorsal follicle cells is regulated by the Grk/EGFR signalling pathway. Bves is also expressed in nurse cells during oogenesis and its transcripts are then translocated into the oocyte. Expression of bves antisense RNA during oogenesis causes reduced viability in the resulting embryos. There is a failure in the migration of pole cells from the posterior towards the antero-dorsal side of the embryo, probably resulting from abnormal germband extension and we suggest that bves is essential for normal embryonic development.
机译:Pop1 / Bves(血管/心外膜物质)基因是最近在各种物种中发现的大力水手基因家族的成员。它编码一种潜在的跨膜糖蛋白,是骨骼肌,心肌和上皮细胞中存在的一种细胞粘附分子。我们分离了果蝇Bves(DmBves)的果蝇同源物,发现在卵巢中,通过与RNA的原位杂交,发现bves在卵母细胞周围的所有卵泡上皮细胞中都表达了,在第10阶段,除了在与之相邻的非常前后的区域中卵母细胞。我们表明在前背卵泡细胞中bves表达的抑制是由Grk / EGFR信号通路调节的。 Bves在卵子发生过程中也在护士细胞中表达,然后其转录物易位到卵母细胞中。 bves反义RNA的表达在卵子发生过程中会导致所得胚胎的活力降低。极细胞从胚胎的后部向前背侧的迁移失败,这可能是由于异常的种带延伸导致的,我们建议bves对于正常的胚胎发育至关重要。

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