An ATX-LPA₆-Gα₁₃-ROCK axis shapes and maintains caudal vein plexus in zebrafish.

ABSTRACT: Lysophosphatidic acid (LPA) is a potential regulator of vascular formation derived from blood. In this study, we utilized zebrafish as a model organism to monitor the blood vessel formation in detail. Zebrafish mutant of ATX, an LPA-producing enzyme, had a defect in the caudal vein plexus (CVP). Pharmacological inhibition of ATX resulted in a fusion of the delicate vessels in the CVP to form large sac-like vessels. Mutant embryos of LPA₆ receptor and downstream Gα₁₃ showed the same phenotype. Administration of OMPT, a stable LPA-analog, induced rapid CVP constriction, which was attenuated significantly in the LPA₆ mutant. We also found that blood flow-induced CVP formation was dependent on ATX. The present study demonstrated that the ATX-LPA₆ axi

SUBMITTER: Okasato R 

PROVIDER: S-EPMC8564058 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature