Abstract
Exocyst is an octameric protein complex implicated in exocytosis. The exocyst complex is highly conserved among mammalian species, but the physiological function of each subunit in exocyst remains unclear. Previously, we identified exocyst complex component 3-like (Exoc3l) as a gene abundantly expressed in embryonic endothelial cells and implicated in the process of angiogenesis in human umbilical cord endothelial cells. Here, to reveal the physiological roles of Exoc3l during development, we generated Exoc3l knockout (KO) mice by genome editing with CRISPR/Cas9. Exoc3l KO mice were viable and showed no significant phenotype in embryonic angiogenesis or postnatal retinal angiogenesis. Exoc3l KO mice also showed no significant alteration in cholesterol homeostasis or insulin secretion, although several reports suggest an association of Exoc3l with these processes. Despite the implied roles, Exoc3l KO mice exhibited no apparent phenotype in vascular development, cholesterol homeostasis, or insulin secretion.
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