Department of Ophthalmology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China.
Signal Transduct Target Ther. 2017 May 12;2:17010. doi: 10.1038/sigtrans.2017.10. eCollection 2017.
Vascular endothelial growth factor (VEGF), one of the most important angiogenic factors, plays an essential role in both physiological and pathological angiogenesis through binding to VEGF receptors (VEGFRs). Here we report a novel peptide designated HRHTKQRHTALH (peptide HRH), which was isolated from the Ph.D. -12 phage display library using VEGFR-Fc fusion protein as the bait. This peptide was found to dose-dependently inhibit the proliferation of human umbilical vein endothelial cells stimulated by VEGF. The anti-angiogenesis effect of the HRH peptide was further confirmed using the chick chorioallantoic membrane assay, which was also dose-dependent. Besides, peptide HRH was proved to inhibit corneal neovascularization in an alkali-burnt rat corneal model and a suture-induced rat corneal model. Taken together, these findings suggest that the HRH peptide can inhibit angiogenesis both and . Consequently, the HRHTKQRHTALH peptide might be a promising lead peptide for the development of potential angiogenic inhibitors.
血管内皮生长因子 (VEGF) 是最重要的血管生成因子之一,通过与 VEGF 受体 (VEGFR) 结合,在生理和病理血管生成中发挥重要作用。在这里,我们报告了一种新型肽,命名为 HRHTKQRHTALH(肽 HRH),它是使用 VEGFR-Fc 融合蛋白作为诱饵从 Ph.D.-12 噬菌体展示文库中分离出来的。研究发现,该肽可剂量依赖性地抑制 VEGF 刺激的人脐静脉内皮细胞的增殖。使用鸡胚尿囊膜试验进一步证实了 HRH 肽的抗血管生成作用,该作用也是剂量依赖性的。此外,肽 HRH 被证明可以抑制碱性烧伤大鼠角膜模型和缝线诱导的大鼠角膜模型中的角膜新生血管形成。总之,这些发现表明 HRH 肽可以抑制血管生成,因此,HRHTKQRHTALH 肽可能是开发潜在血管生成抑制剂的有前途的先导肽。