Perivascular cell-specific knockout of the stem cell pluripotency gene Oct4 inhibits angiogenesis.

Abstract:

:The stem cell pluripotency factor Oct4 serves a critical protective role during atherosclerotic plaque development by promoting smooth muscle cell (SMC) investment. Here, we show using Myh11-CreERT2 lineage-tracing with inducible SMC and pericyte (SMC-P) knockout of Oct4 that Oct4 regulates perivascular cell migration and recruitment during angiogenesis. Knockout of Oct4 in perivascular cells significantly impairs perivascular cell migration, increases perivascular cell death, delays endothelial cell migration, and promotes vascular leakage following corneal angiogenic stimulus. Knockout of Oct4 in perivascular cells also impairs perfusion recovery and decreases angiogenesis following hindlimb ischemia. Transcriptomic analyses demonstrate that expression of the migratory gene Slit3 is reduced following loss of Oct4 in cultured SMCs, and in Oct4-deficient perivascular cells in ischemic hindlimb muscle. Together, these results provide evidence that Oct4 plays an essential role within perivascular cells in injury- and hypoxia-induced angiogenesis.

journal_name

Nat Commun

journal_title

Nature communications

authors

Hess DL,Kelly-Goss MR,Cherepanova OA,Nguyen AT,Baylis RA,Tkachenko S,Annex BH,Peirce SM,Owens GK

doi

10.1038/s41467-019-08811-z

subject

Has Abstract

pub_date

2019-02-27 00:00:00

pages

967

issue

1

issn

2041-1723

pii

10.1038/s41467-019-08811-z

journal_volume

10

pub_type

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