Adipose Vascular Endothelial Growth Factor Regulates Metabolic Homeostasis through Angiogenesis

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• 作者：Hoon-Ki Sung¹ ; Kyung-Oh Doh² ; Joe Eun Son¹ ; Jin Gyoon Park¹ ; Yunui Bae² ; Soojeong Choi¹ ; Seana Mary Lunney Nelson¹ ; ⁷ ; Rebecca Cowling¹ ; Kristina Nagy¹ ; Iacovos P. Michael¹ ; Gou Young Koh³ ; S. Lee Adamson¹ ; ⁴ ; ⁵ ; Tony Pawson¹ ; ⁶ ; Andras Nagy¹ ; ⁵ ; ⁷ ; ^{nagy@lunenfeld.ca}
• 刊名：Cell Metabolism
• 出版年：2013
• 出版时间：8 January, 2013
• 年：2013
• 卷：17
• 期：1
• 页码：61-72
• 全文大小：2056 K

文摘

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Summary

Vascular endothelial growth factor A (VEGF) is highly expressed in adipose tissue. Its role, however, has not been fully elucidated. Here, we reveal the metabolic role of adipose-VEGF by studying mice with deletion (VEGF^Ad¦¤) or doxycycline-inducible overexpression of a VEGF transgene (VEGF^AdTg) in the adipose tissue. VEGF^Ad¦¤ mice have reduced adipose vascular density and show adipose hypoxia, apoptosis, inflammation, and metabolic defects on?a high-fat diet. In contrast, induction of VEGF expression in VEGF^AdTg mice leads to increased adipose vasculature and reduced hypoxia. The latter changes are sufficient to counteract an established compromising effect of high-fat diet on the metabolism, indicating that metabolic misbalance is reversible by adipose vessel density increase. Our data clearly show the essential role of VEGF signaling for adequate adipose function. Besides revealing insights into the molecular mechanisms of obesity-related metabolic diseases, this study points to the therapeutic potential of increased adipose angiogenesis.