Tie2 activation promotes choriocapillary regeneration for alleviating neovascular age-related macular degeneration

Jaeryung Kim, Jang Ryul Park, Jeongwoon Choi, Intae Park, Yoonha Hwang, Hosung Bae, Yongjoo Kim, Woo Jhon Choi, Jee Myung Yang, Sangyeul Han, Tae Young Chung, Pilhan Kim, Yoshiaki Kubota, Hellmut G. Augustin, Wang Yuhl Oh, Gou Young Koh

研究成果: Article査読

19 被引用数 (Scopus)

抄録

Choriocapillary loss is a major cause of neovascular age-related macular degeneration (NV-AMD). Although vascular endothelial growth factor (VEGF) blockade for NV-AMD has shown beneficial outcomes, unmet medical needs for patients refractory or tachyphylactic to anti-VEGF therapy exist. In addition, the treatment could exacerbate choriocapillary rarefaction, necessitating advanced treatment for fundamental recovery from NV-AMD. In this study, Tie2 activation by angiopoietin-2–binding and Tie2-activating antibody (ABTAA) presents a therapeutic strategy for NV-AMD. Conditional Tie2 deletion impeded choriocapillary maintenance, rendering eyes susceptible to NV-AMD development. Moreover, in a NV-AMD mouse model, ABTAA not only suppressed choroidal neovascularization (CNV) and vascular leakage but also regenerated the choriocapillaris and relieved hypoxia. Conversely, VEGF blockade degenerated the choriocapillaris and exacerbated hypoxia, although it suppressed CNV and vascular leakage. Together, we establish that angiopoietin-Tie2 signaling is critical for choriocapillary maintenance and that ABTAA represents an alternative, combinative therapeutic strategy for NV-AMD by alleviating anti-VEGF adverse effects.

本文言語English
論文番号eaau6732
ジャーナルScience Advances
5
2
DOI
出版ステータスPublished - 2019 2 13

ASJC Scopus subject areas

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