Soluble Factors Secreted by Human Wharton's Jelly Mesenchymal Stromal/stem Cells Exhibit Therapeutic Radioprotection: A Mechanistic Study with Integrating Network Biology

Overview

Journal World J Stem Cells

Publisher Baishideng Publishing Group

Date 2022 Jun 20

PMID 35722198

Authors

Dharmendra Kumar Maurya

Mayuri Bandekar

Santosh Kumar Sandur

Affiliations

Soon will be listed here.

Abstract

Background: Human Wharton's jelly-derived mesenchymal stromal/stem cells (hWJ-MSCs) have gained considerable attention in their applications in cell-based therapy due to several advantages offered by them. Recently, we reported that hWJ-MSCs and their conditioned medium have significant therapeutic radioprotective potential. This finding raised an obvious question to identify unique features of hWJ-MSCs over other sources of stem cells for a better understanding of its radioprotective mechanism.

Aim: To understand the radioprotective mechanism of soluble factors secreted by hWJ-MSCs and identification of their unique genes.

Methods: Propidium iodide staining, endogenous spleen colony-forming assay, and survival study were carried out for radioprotection studies. Homeostasis-driven proliferation assay was performed for lymphocyte proliferation. Analysis of RNAseq data was performed to find the unique genes of WJ-MSCs by comparing them with bone marrow mesenchymal stem cells, embryonic stem cells, and human fibroblasts. Gene enrichment analysis and protein-protein interaction network were used for pathway analysis.

Results: Co-culture of irradiated murine splenic lymphocytes with WJ-MSCs offered significant radioprotection to lymphocytes. WJ-MSC transplantation increased the homeostasis-driven proliferation of the lymphocytes. Neutralization of WJ-MSC conditioned medium with granulocyte-colony stimulating factor antibody abolished therapeutic radioprotection. Transcriptome analysis showed that WJ-MSCs share several common genes with bone marrow MSCs and embryonic stem cells and express high levels of unique genes such as interleukin (), , , , , , , , , and . It was also observed that WJ-MSCs preferentially modulate several cellular pathways and processes that handle the repair and regeneration of damaged tissues compared to stem cells from other sources. Cytokine-based network analysis showed that most of the radiosensitive tissues have a more complex network for the elevated cytokines.

Conclusion: Systemic infusion of WJ-MSC conditioned media will have significant potential for treating accidental radiation exposed victims.

Citing Articles

Wharton's jelly mesenchymal stem cells: Future regenerative medicine for clinical applications in mitigation of radiation injury.

Sharma P, Maurya D World J Stem Cells. 2024; 16(7):742-759.

PMID: 39086560 PMC: 11287430. DOI: 10.4252/wjsc.v16.i7.742.

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