The P-type ATPase transporter ATP7A promotes angiogenesis by limiting autophagic degradation of VEGFR2.
The P-type ATPase transporter ATP7A promotes angiogenesis by limiting autophagic degradation of VEGFR2.
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P型ATPase转运蛋白ATP7A通过限制VEGFR2的自噬降解来促进血管生成。
DOI:
10.1038/s41467-021-23408-1
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发表时间:
2021-05-25
影响因子:
16.6
通讯作者:
Ushio-Fukai M
中科院分区:
文献类型:
--
作者:
Ash D;Sudhahar V;Youn SW;Okur MN;Das A;O'Bryan JP;McMenamin M;Hou Y;Kaplan JH;Fukai T;Ushio-Fukai M
VEGFR2 (KDR/Flk1) signaling in endothelial cells (ECs) plays a central role in angiogenesis. The P-type ATPase transporter ATP7A regulates copper homeostasis, and its role in VEGFR2 signaling and angiogenesis is entirely unknown. Here, we describe the unexpected crosstalk between the Copper transporter ATP7A, autophagy, and VEGFR2 degradation. The functional significance of this Copper transporter was demonstrated by the finding that inducible EC-specific ATP7A deficient mice or ATP7A-dysfunctional ATP7Amut mice showed impaired post-ischemic neovascularization. In ECs, loss of ATP7A inhibited VEGF-induced VEGFR2 signaling and angiogenic responses, in part by promoting ligand-induced VEGFR2 protein degradation. Mechanistically, VEGF stimulated ATP7A translocation from the trans-Golgi network to the plasma membrane where it bound to VEGFR2, which prevented autophagy-mediated lysosomal VEGFR2 degradation by inhibiting autophagic cargo/adapter p62/SQSTM1 binding to ubiquitinated VEGFR2. Enhanced autophagy flux due to ATP7A dysfunction in vivo was confirmed by autophagy reporter CAG-ATP7Amut -RFP-EGFP-LC3 transgenic mice. In summary, our study uncovers a novel function of ATP7A to limit autophagy-mediated degradation of VEGFR2, thereby promoting VEGFR2 signaling and angiogenesis, which restores perfusion recovery and neovascularization. Thus, endothelial ATP7A is identified as a potential therapeutic target for treatment of ischemic cardiovascular diseases. The role of endothelial copper transporter ATP7A in vascular function and angiogenesis remains largely unexplored. Here the authors show that ATP7A promotes VEGFR2 signaling and angiogenesis by limiting autophagy-mediated degradation of VEGFR2, which enhances reparative neovascularization.
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影响因子:
3.7
作者:
Wang Y;Zhu S;Weisman GA;Gitlin JD;Petris MJ
通讯作者:
Petris MJ
影响因子:
9
作者:
Kumar S;Guru SK;Pathania AS;Kumar A;Bhushan S;Malik F
通讯作者:
Malik F
影响因子:
3.2
作者:
Igawa H;Kikuchi A;Misu H;Ishii KA;Kaneko S;Takamura T
通讯作者:
Takamura T
影响因子:
5.5
作者:
Du, Jianhai;Teng, Ru-Jeng;Shi, Yang
通讯作者:
Shi, Yang
影响因子:
4.8
作者:
Heiss, Maximilian;Hellstrom, Mats;Korff, Thomas
通讯作者:
Korff, Thomas