Melanoma Cell Line-derived Exosomal MiR-424-5p: a Key Promoter of Angiogenesis Through LATS2 Interaction

Overview

Journal Oncol Res

Date 2025 Jan 27

PMID 39866229

Authors

Junwei Du

Qiang Zhang

Jing Zhang

Maierdanjiang Maihemuti

Haiyang He

Renbing Jiang

Affiliations

Soon will be listed here.

Abstract

Objectives: Melanoma is a highly aggressive and metastatic form of cancer, and the role of exosomal microRNAs (miRNAs) in its progression remains largely unexplored. This study aimed to investigate the effects of melanoma cell-derived exosomal miR-424-5p on angiogenesis and its underlying mechanisms.

Methods: Exosomes were isolated from melanoma cell lines A375 and A2058, and their effects on the proliferation, migration, and angiogenesis of human umbilical vein endothelial cells (HUVECs) were examined. The interaction between miR-424-5p and its target gene, large tumor suppressor kinase 2 (LATS2), was analyzed using luciferase reporter assays and functional experiments. , tumor growth and angiogenesis were studied in a xenograft model using nude mice.

Results: Melanoma cell-derived exosomes could be internalized by HUVECs, which promoted proliferation, migration, and angiogenesis. miR-424-5p was highly expressed in melanoma cells and their exosomes, and its inhibition in exosomes suppressed HUVEC proliferation, migration, and angiogenesis. LATS2 was identified as a direct target of miR-424-5p, and its silencing reversed the inhibitory effects of miR-424-5p inhibition on HUVEC functions. , exosomes derived from miR-424-5p-inhibited melanoma cells suppressed tumor growth and angiogenesis in xenograft models.

Conclusions: Melanoma cell-derived exosomal miR-424-5p promotes angiogenesis by targeting LATS2, contributing to melanoma progression. Targeting the exosomal miR-424-5p/LATS2 axis could be a potential therapeutic strategy for melanoma.

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