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玻璃体内 CendR 肽靶向小鼠激光诱导的脉络膜新生血管部位。

Intravitreal CendR peptides target laser-induced choroidal neovascularization sites in mice.

机构信息

School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1 C, 70210 Kuopio, Finland.

School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Yliopistonranta 1 C, 70210 Kuopio, Finland.

出版信息

J Control Release. 2023 Aug;360:810-817. doi: 10.1016/j.jconrel.2023.07.025. Epub 2023 Jul 25.

Abstract

Choroidal neovascularization (CNV) is a common ocular pathology that may be associated in a variety of eye diseases. Although intravitreal injection treatment of anti-vascular endothelial growth factor (anti-VEGF) drugs shows significant clinical benefits in CNV treatment, the limitations of the current therapy need to be addressed. The aim of our study was to investigate the potential utility of three C-end Rule (CendR) peptides (RPARPAR, PL3, iRGD) for CNV targeting and to evaluate the efficacy of peptides for treating experimental CNV in mice. We observed that the CendR peptides localize to the CNV lesion sites after intravitreal injection and were mainly found in the outer nuclear cell layer (ONL) of the mouse retina. Interestingly, experimental therapy with tenascin-C (TNC-C) and neuropilin-1 (NRP-1)-targeting PL3 peptide, reduced angiogenesis and decreased vascular leakage. The results suggest that PL3 and potentially other CendR peptides could serve as affinity targeting ligands and therapeutics for ocular diseases that involve pathological CNV.

摘要

脉络膜新生血管(CNV)是一种常见的眼部病理学疾病,可能与多种眼部疾病有关。虽然玻璃体内注射抗血管内皮生长因子(anti-VEGF)药物的治疗方法在 CNV 治疗中显示出显著的临床益处,但仍需要解决当前治疗方法的局限性。我们的研究旨在探讨三种 C 末端规则(CendR)肽(RPARPAR、PL3、iRGD)在 CNV 靶向治疗中的潜在应用,并评估肽类药物治疗实验性 CNV 的疗效。我们观察到,CendR 肽在玻璃体内注射后定位于 CNV 病变部位,主要存在于小鼠视网膜的外核细胞层(ONL)中。有趣的是,用 tenascin-C(TNC-C)和神经纤毛蛋白-1(NRP-1)靶向 PL3 肽进行实验治疗,可减少血管生成并降低血管渗漏。结果表明,PL3 及其他潜在的 CendR 肽可能作为亲和靶向配体和治疗剂,用于治疗涉及病理性 CNV 的眼部疾病。

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