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VEGF-B Is a Potent Antioxidant

VEGF-B Is a Potent Antioxidant

Pachiappan Arjunan, Xianchai Lin, Zhongshu Tang, Yuxiang Du, Anil Kumar, Lixian Liu, Xiangke Yin, Lijuan Huang, Wei Chen, Qishan Chen, Zhimin Ye, Shasha Wang, Haiqing Kuang, Linbin Zhou, Kai Xu, Xue Chen, etc.

Proc Natl Acad Sci U S A. 2018 Oct 9;115(41):10351-10356.

PMID: 30249667

Abstract:

VEGF-B was discovered a long time ago. However, unlike VEGF-A, whose function has been extensively studied, the function of VEGF-B and the mechanisms involved still remain poorly understood. Notwithstanding, drugs that inhibit VEGF-B and other VEGF family members have been used to treat patients with neovascular diseases. It is therefore critical to have a better understanding of VEGF-B function and the underlying mechanisms. Here, using comprehensive methods and models, we have identified VEGF-B as a potent antioxidant. Loss of Vegf-b by gene deletion leads to retinal degeneration in mice, and treatment with VEGF-B rescues retinal cells from death in a retinitis pigmentosa model. Mechanistically, we demonstrate that VEGF-B up-regulates numerous key antioxidative genes, particularly, Gpx1 Loss of Gpx1 activity largely diminished the antioxidative effect of VEGF-B, demonstrating that Gpx1 is at least one of the critical downstream effectors of VEGF-B. In addition, we found that the antioxidant function of VEGF-B is mediated mainly by VEGFR1. Given that oxidative stress is a crucial factor in numerous human diseases, VEGF-B may have therapeutic value for the treatment of such diseases.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42414864	GPX1 human			Price
IAR4248784	VEGF-B human			Price

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