ArticleJournal of translational medicine2025
Peptides based on the interface of hnRNPA2B1-transthyretin complex repress retinal angiogenesis in diabetic retinopathy.
Article in Journal of translational medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- CD4 + T cell-derived exosomal miR-223-3p serves as a potential biomarker for systemic lupus erythematosus and attenuates lupus nephritis in NZBWF1/J mice.Journal of nanobiotechnology · 2026Article
- FTO-modulated mJournal of translational medicine · 2026Article
- PTIP inhibits proliferation, migration, and angiogenesis of retinal microvascular endothelial cells in a high-glucose environment.In vitro cellular & developmental biology. Animal · 2026Article
- Post-translational modification gene signatures implicate FBXW7 in immune and vascular dysregulation of Moyamoya disease.Frontiers in genetics · 2025Article
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Authors and funding
5 authors.
Funding
Abstract
backgroundHeterogeneous nuclear ribonucleoprotein A2B1 (hnRNPA2B1) plays a vital role in angiogenesis, when its nucleic acid-binding domain is occupied by transthyretin (TTR), the neovascularization of human retinal microvascular endothelial cells (hRECs) is repressed under hyperglycemic conditions.
methodsHnRNPA2B1-targeting peptides (THIPs) were designed based on the core fragments at the TTR-hnRNPA2B1 interface. Biacore, Langmuir equilibrium adsorption, and co-immunoprecipitation (co-IP) assays were performed to determine the association between the THIPs and hnRNPA2B1. Proliferation and DNA synthesis in hRECs were detected using CCK-8 and EdU assays. Transwell, wound healing, and tube formation assays were used to evaluate migratory and the angiogenic capacity of hRECs. Related RNA and protein expression levels were tested by quantitative PCR and western blot assays, respectively. Streptozotocin (STZ)-induced diabetic retinopathy (DR) model rats were intravitreally injected with 5 μL of AAV9 virus (1 × 10
resultsBiacore, Langmuir equilibrium adsorption, and co-IP analyses demonstrated that the four designed THIPs specifically recognized hnRNPA2B1. CCK-8 and EdU labeling assays showed that the THIPs inhibited proliferation and DNA synthesis in hRECs under hyperglycemia. Transwell, wound healing and tube formation assays demonstrated that the THIPs inhibited the migratory and angiogenic capacity of hRECs. Quantitative PCR and western blot assays suggested that the THIPs exerted their effects via the STAT4/miR-223-3p/FBXW7 and the downstream Notch1/Akt/mTOR axes. In vivo studies using DR model rat revealed that the intravitreal administration of THIP-4 significantly mitigated retinal leakage, capillary decellularization, pericyte loss, fibrosis, and gliosis during DR progression.
conclusionOur findings demonstrated that under hyperglycemia, THIP-4 suppressed DR progression via the STAT4/miR-223-3p/FBXW7 and Notch1/Akt/mTOR axes both in vitro and in vivo. These results indicated that THIP-4 has strong potential for clinical application in DR and other angiogenesis associated diseases.
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