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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
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Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
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Related Experiment Video

Updated: Aug 30, 2025

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Challenges in Mesenchymal Stromal Cell-based Therapies.

Maria Kavianpour1, Lindolfo da Silva Meirelles2, Naser Ahmadbeigi3

  • 1Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.

Current Stem Cell Research & Therapy
|September 1, 2022
PubMed
Summary

Mesenchymal stromal cells (MSCs) show promise in treating diseases, but their inconsistent efficacy and unknown in vivo identity hinder clinical approval. Further research into MSC biology is needed to improve therapeutic outcomes.

Keywords:
Mesenchymal stromal cellcell therapychallengescolony forming unitnon-adherent cellssignaling cells

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Area of Science:

  • Regenerative Medicine
  • Cell Biology
  • Immunology

Background:

  • Mesenchymal stromal cells (MSCs) were discovered over 50 years ago and recognized for therapeutic potential despite unknown identity.
  • Over 1000 MSC-based clinical trials registered, proving safety but lacking sufficient efficacy data for FDA approval.
  • Controversies surrounding MSCs persist due to limited understanding of their in vivo identity and functions.

Purpose of the Study:

  • To highlight the need for a deeper understanding of Mesenchymal stromal cells (MSCs) biology.
  • To address the limitations in current MSC-based therapies.
  • To improve the therapeutic efficacy and clinical establishment of MSCs.

Main Methods:

  • Review of existing literature on Mesenchymal stromal cells (MSCs).
  • Analysis of clinical trial data and FDA approval requirements.
  • Discussion on the knowledge gaps in MSC in vivo identity and function.

Main Results:

  • MSC therapeutic effects are not consistently stable long-term.
  • Clinical efficacy data remains insufficient for regulatory approval.
  • Limited progress in understanding MSCs' in vivo origin and functions.

Conclusions:

  • Further investigation into the fundamental biology of Mesenchymal stromal cells (MSCs) is crucial.
  • Understanding MSCs' in vivo location and function can enhance therapeutic efficacy.
  • Improved biological understanding may facilitate MSCs' establishment as approved cell therapies.