The Bartonella autotransporter BafA activates the host VEGF pathway to drive angiogenesis

Kentaro Tsukamoto, Naoaki Shinzawa, Akito Kawai, Masahiro Suzuki, Hiroyasu Kidoya, Nobuyuki Takakura, Hisateru Yamaguchi, Toshiki Kameyama, Hidehito Inagaki, Hiroki Kurahashi, Yasuhiko Horiguchi, Yohei Doi

研究成果: ジャーナルへの寄稿学術論文査読

10 被引用数 (Scopus)


Pathogenic bacteria of the genus Bartonella can induce vasoproliferative lesions during infection. The underlying mechanisms are unclear, but involve secretion of an unidentified mitogenic factor. Here, we use functional transposon-mutant screening in Bartonella henselae to identify such factor as a pro-angiogenic autotransporter, called BafA. The passenger domain of BafA induces cell proliferation, tube formation and sprouting of microvessels, and drives angiogenesis in mice. BafA interacts with vascular endothelial growth factor (VEGF) receptor-2 and activates the downstream signaling pathway, suggesting that BafA functions as a VEGF analog. A BafA homolog from a related pathogen, Bartonella quintana, is also functional. Our work unveils the mechanistic basis of vasoproliferative lesions observed in bartonellosis, and we propose BafA as a key pathogenic factor contributing to bacterial spread and host adaptation.

ジャーナルNature communications
出版ステータス出版済み - 01-12-2020

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 生化学、遺伝学、分子生物学(全般)
  • 物理学および天文学(全般)


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