Mesenchymal stem cells: myths and reality

Area of Science:

• Cell Biology
• Immunology
• Regenerative Medicine

Background:

• Mesenchymal stem cells (MSCs) have garnered significant research interest over the past two decades.
• Initial focus was on their regeneration capacity and low immunogenicity, with recent attention on their immunomodulatory functions.
• Exponential growth in MSC research for treating human diseases has yielded conflicting results, partly due to poorly defined preparations and models.

Purpose of the Study:

• To identify and address the main open questions in mesenchymal stem cell (MSC) biology.
• To critically evaluate and differentiate established facts from prevailing myths surrounding MSCs.
• To provide clarity on both endogenous and therapeutic applications of MSCs.

Main Methods:

• Literature review and critical analysis of existing studies on MSC biology.
• Synthesis of preclinical and clinical data on MSC therapeutic potential.
• Distinguishing between in vitro findings and in vivo relevance for MSC applications.

Main Results:

• Significant confusion exists in MSC research due to inconsistent methodologies and conflicting outcomes.
• Key questions regarding MSC origin, function, and therapeutic efficacy remain unresolved.
• A clear distinction is needed between scientifically validated facts and unsubstantiated claims about MSCs.

Conclusions:

• Further rigorous research is essential to overcome current limitations in understanding MSC biology.
• Standardization of cell preparations and experimental models is crucial for reproducible results.
• Clarifying MSC biology will facilitate their effective and safe translation into clinical therapies.