iScience (Jul 2023)

Coordinated linear and rotational movements of endothelial cells compartmentalized by VE-cadherin drive angiogenic sprouting

  • Kazuo Tonami,
  • Tatsuya Hayashi,
  • Yasunobu Uchijima,
  • Masahiro Kanai,
  • Fumitaka Yura,
  • Jun Mada,
  • Kei Sugahara,
  • Yukiko Kurihara,
  • Yuri Kominami,
  • Toshiyuki Ushijima,
  • Naoko Takubo,
  • Xiaoxiao Liu,
  • Hideto Tozawa,
  • Yoshimitsu Kanai,
  • Tetsuji Tokihiro,
  • Hiroki Kurihara

Journal volume & issue
Vol. 26, no. 7
p. 107051

Abstract

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Summary: Angiogenesis is a sequential process to extend new blood vessels from preexisting ones by sprouting and branching. During angiogenesis, endothelial cells (ECs) exhibit inhomogeneous multicellular behaviors referred to as “cell mixing,” in which ECs repetitively exchange their relative positions, but the underlying mechanism remains elusive. Here we identified the coordinated linear and rotational movements potentiated by cell-cell contact as drivers of sprouting angiogenesis using in vitro and in silico approaches. VE-cadherin confers the coordinated linear motility that facilitated forward sprout elongation, although it is dispensable for rotational movement, which was synchronous without VE-cadherin. Mathematical modeling recapitulated the EC motility in the two-cell state and angiogenic morphogenesis with the effects of VE-cadherin-knockout. Finally, we found that VE-cadherin-dependent EC compartmentalization potentiated branch elongations, and confirmed this by mathematical simulation. Collectively, we propose a way to understand angiogenesis, based on unique EC behavioral properties that are partially dependent on VE-cadherin function.

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