Transfer of Growth Factor Receptor MRNA Via Exosomes Unravels the Regenerative Effect of Mesenchymal Stem Cells
Overview
Authors
Affiliations
Bone marrow-mesenchymal stem cells (BM-MSC) ameliorate renal dysfunction and repair tubular damage of acute kidney injury by locally releasing growth factors, including the insulin-like growth factor-1 (IGF-1). The restricted homing of BM-MSC at the site of injury led us to investigate a possible gene-based communication mechanism between BM-MSC and tubular cells. Human BM-MSC (hBM-MSC) released microparticles and exosomes (Exo) enriched in mRNAs. A selected pattern of transcripts was detected in Exo versus parental cells. Exo expressed the IGF-1 receptor (IGF-1R), but not IGF-1 mRNA, while hBM-MSC contained both mRNAs. R- cells lacking IGF-1R exposed to hBM-MSC-derived Exo acquired the human IGF-1R transcript that was translated in the corresponding protein. Transfer of IGF-1R mRNA from Exo to cisplatin-damaged proximal tubular cells (proximal tubular epithelial cell [PTEC]) increased PTEC proliferation. Coincubation of damaged PTEC with Exo and soluble IGF-1 further enhanced cell proliferation. These findings suggest that horizontal transfer of the mRNA for IGF-1R to tubular cells through Exo potentiates tubular cell sensitivity to locally produced IGF-1 providing a new mechanism underlying the powerful renoprotection of few BM-MSC observed in vivo.
Elsherif R, Mm Abdel-Hafez A, Hussein O, Sabry D, Abdelzaher L, Bayoumy A J Mol Histol. 2025; 56(1):65.
PMID: 39760823 DOI: 10.1007/s10735-024-10335-w.
Romano E, Perut F, Avnet S, Di Pompo G, Silvestri S, Roffo F Biotechnol Bioeng. 2024; 122(3):667-676.
PMID: 39690717 PMC: 11808436. DOI: 10.1002/bit.28909.
Extracellular Vesicles in Pathophysiology: A Prudent Target That Requires Careful Consideration.
Shahi S, Kang T, Fonseka P Cells. 2024; 13(9.
PMID: 38727289 PMC: 11083420. DOI: 10.3390/cells13090754.
Cam S, Ciftci E, Gurbuz N, Altun B, Korkusuz P Stem Cell Res Ther. 2024; 15(1):105.
PMID: 38600585 PMC: 11005291. DOI: 10.1186/s13287-024-03674-8.
How does exosome cause diabetes?.
Hu F, Yu Y, Xu H Hormones (Athens). 2024; 23(3):385-393.
PMID: 38233729 DOI: 10.1007/s42000-024-00525-2.