{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:09:22Z","timestamp":1762160962354},"reference-count":38,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2012,9,20]],"date-time":"2012-09-20T00:00:00Z","timestamp":1348099200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Ophthalmologica"],"published-print":{"date-parts":[[2012,11]]},"abstract":"<jats:title>Abstract.<\/jats:title><jats:p><jats:bold>Purpose:\u2002<\/jats:bold> To evaluate the effect of ZY1, a novel 21\u2010amino acid peptide from human placenta growth factor\u20101 (PlGF\u20101), against ocular neovascularization, and to study its possible toxicity to the retina and the underlying mechanism of antiangiogenic effect.<\/jats:p><jats:p><jats:bold>Methods:\u2002<\/jats:bold> MTS assays, a modified Boyden chamber and Matrigel<jats:sup>\u2122<\/jats:sup> were used to evaluate the effect of ZY1 on the proliferation, migration and tube formation of RF\/6A rhesus macaque choroid\u2010retina endothelial cells induced by vascular endothelial growth factor (VEGF) <jats:italic>in vitro<\/jats:italic>. The antiangiogenic effect of ZY1 was also studied with corneal micropocket angiogenesis assays and oxygen\u2010induced retinopathy (OIR) assays in mice. Electrophysiological tests and histological examinations were used to study the possible toxicity of ZY1 against mouse neuroretina. Competitive ELISA and Western blotting were performed to elucidate the underlying mechanism of ZY1.<\/jats:p><jats:p><jats:bold>Results:\u2002<\/jats:bold> ZY1 inhibited VEGF\u2010induced RF\/6A proliferation, migration and tube formation. It also inhibited ocular neovascularization when applied to the corneal micropocket angiogenesis assays and OIR assays in mice. Electrophysiological tests and histological examinations revealed no evident functional or morphologic abnormalities in mouse neuroretina after ZY1 injection. ZY1 competed for binding to VEGFR\u20101 against PlGF and VEGF and inhibited VEGFR\u20101\/ERK\/AKT activation.<\/jats:p><jats:p><jats:bold>Conclusion:\u2002<\/jats:bold> It is concluded that the novel peptide ZY1 is an effective inhibitor of ocular pathologic angiogenesis and may provide a promising alternative for ocular antiangiogenic therapy.<\/jats:p>","DOI":"10.1111\/j.1755-3768.2012.02476.x","type":"journal-article","created":{"date-parts":[[2012,9,20]],"date-time":"2012-09-20T09:45:07Z","timestamp":1348134307000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Inhibition of ocular neovascularization by a novel peptide derived from human placenta growth 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