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Immunomodulatory disorders, such as autoimmune diseases, inflammatory conditions, and viral infections, stem from immune system dysregulation and often resist conventional therapies. Stem cells, particularly mesenchymal (MSCs) and hematopoietic stem cells (HSCs), possess immunomodulatory and regenerative properties, offering a promising therapeutic alternative.
A systematic literature review was conducted using databases, including PubMed, Scopus, Web of Science, and Google Scholar, for studies published between 1996 and 2025. A total of 287 articles were screened, and 132 were selected based on relevance, quality, and focus on stem cell biology, immunoregulatory mechanisms, and therapeutic applications.
Stem cells demonstrated significant capacity to regulate immune responses, suppress the production of inflammatory cytokines, enhance regulatory T-cell populations, and promote tissue regeneration. HSCs are effectively used in hematologic malignancies and immune reconstitution, while MSCs show promise in treating conditions, such as rheumatoid arthritis, diabetes mellitus, and influenza-induced lung injury. Emerging evidence also supports the role of cancer stem cells (CSCs) in targeted cancer therapies.
Stem cells offer a mechanism-driven approach to restoring immune balance and repairing tissue damage. However, variability in clinical outcomes, ethical concerns, and safety risks, such as tumorigenesis, limit their translation into clinical practice. Advances in cell derivation, immunomodulatory profiling, and delivery systems are critical to optimizing outcomes.
Stem cell-based therapies represent a paradigm shift in the treatment of immunomodulatory disorders by addressing the root cause of immune dysfunction. Continued research, ethical oversight, and clinical validation are crucial for transitioning stem cell therapy into routine medical practice.
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