VEGF Overexpressed Mesoangioblasts Enhance Urethral and Vaginal Recovery Following Simulated Vaginal Birth in Rats

Overview

Journal Sci Rep

Specialty Science

Date 2023 May 27

PMID 37244975

Authors

Marina G M C Mori da Cunha

Bernard K van der Veer

Giorgia Giacomazzi

Katerina Mackova

Laura Cattani

Kian Peng Koh

Greetje Vande Velde

Rik Gijsbers

Maarten Albersen

Maurilio Sampaolesi

Jan Deprest

Affiliations

Soon will be listed here.

Abstract

Vaginal birth causes pelvic floor injury which may lead to urinary incontinence. Cell therapy has been proposed to assist in functional recovery. We aim to assess if intra-arterial injection of rat mesoangioblasts (MABs) and stable Vascular Endothelial Growth Factor (VEGF)-expressing MABs, improve recovery of urethral and vaginal function following simulated vaginal delivery (SVD). Female rats (n = 86) were assigned to either injection of saline (control), allogeneic-MABs (MABs), autologous-MABs (MABs) or allogeneic-MABs transduced to stably expressed VEGF (MABs). One hour after SVD, 0.5 × 10 MABs or saline were injected into the aorta. Primary outcome was urethral (7d and 14d) and vaginal (14d) function; others were bioluminescent imaging for cell tracking (1, 3 and 7d), morphometry (7, 14 and 60d) and mRNAseq (3 and 7d). All MABs injected rats had external urethral sphincter and vaginal function recovery within 14d, as compared to only half of saline controls. Functional recovery was paralleled by improved muscle regeneration and microvascularization. Recovery rate was not different between MABs and MABs. MABs accelerated functional recovery and increased GAP-43 expression at 7d. At 3d we detected major transcriptional changes in the urethra of both MABs and MABs-injected animals, with upregulation of Rho/GTPase activity, epigenetic factors and dendrite development. MABS also upregulated transcripts that encode proteins involved in myogenesis and downregulated pro-inflammatory processes. MABs also upregulated transcripts that encode proteins involved in neuron development and downregulated genes involved in hypoxia and oxidative stress. At 7d, urethras of MABs-injected rats showed downregulation of oxidative and inflammatory response compared to MABS. Intra-arterial injection of MABs enhances neuromuscular regeneration induced by untransduced MABs and accelerates the functional urethral and vaginal recovery after SVD.

Citing Articles

Animal models, treatment options, and biomaterials for female stress urinary incontinence.

Tan X, Li G, Li C, Kong C, Li H, Wu S Front Bioeng Biotechnol. 2024; 12:1414323.

PMID: 39267906 PMC: 11390547. DOI: 10.3389/fbioe.2024.1414323.

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