phlda3 overexpression impairs specification of hemangioblasts and vascular development

Xiaojing Wang, Jia Li, Zhongcheng Yang, Li Wang, Lei Li, Wenqing Deng, Juan Zhou, Longfei Wang, Chengqi Xu, Qiuyun Chen, Qing K. Wang

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The phlda3 gene encodes a small, 127-amino acid protein with only a PH domain, and is involved in tumor suppression, proliferation of islet β-cells, insulin secretion, glucose tolerance, and liver injury. However, the role of phlda3 in vascular development is unknown. Here, we show that phlda3 overexpression decreases the expression levels of hemangioblast markers scl, fli1, and etsrp and intersegmental vessel (ISV) markers flk1 and cdh5, and disrupts ISV development in tg(flk1:GFP) and tg(fli1:GFP) zebrafish. Moreover, phlda3 overexpression inhibits the activation of protein kinase B (AKT) in zebrafish embryos, and the developmental defects of ISVs by phlda3 overexpression were reversed by the expression of a constitutively active form of AKT. These data suggest that phlda3 is a negative regulator of hemangioblast specification and ISV development via AKT signaling.

Original languageEnglish (US)
Pages (from-to)4071-4081
Number of pages11
JournalFEBS Journal
Volume285
Issue number21
DOIs
StatePublished - Nov 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 Federation of European Biochemical Societies

Keywords

  • AKT
  • hemangioblast
  • hematopoiesis
  • phlda3
  • vascular development

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