Stem Cell Therapy for Inflammatory Diseases: Progress, Challenges, and Future Directions.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Inflammatory diseases, encompassing conditions like inflammatory bowel disease and rheumatoid arthritis, present a significant clinical challenge with substantial treatment-refractory patient populations despite biologic therapy advances. Stem cell therapeutics have emerged as a transformative approach, leveraging multifaceted regenerative mechanisms to address the complex pathophysiology of these conditions, which involves genetic, microbial, immunological, and epithelial dysregulation. This review focuses on comparing the clinical efficacy of contemporary stem cell strategies. We analyze outcomes across diverse cell sources, with a detailed examination of delivery methodologies. Our systematic analysis demonstrates superior efficacy with targeted delivery systems, particularly in managing localized inflammatory lesions (e.g., fistulas) and tissue restoration. Notably, minimally processed cellular interventions, such as autologous fat grafting and stromal vascular fraction therapy, show unexpected therapeutic promise. Critical translational barriers include suboptimal cell homing, limited engraftment persistence, and uncharacterized long-term safety profiles. We propose strategic solutions through induced pluripotent stem cell platforms, precision genetic modifications, and advanced delivery technologies. By integrating mechanistic insights with robust clinical evidence, this

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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