"Mesenchymal stem cell-derived exosomes (MSC-exosomes) in hematology: From mechanisms to clinical breakthroughs".

Mesenchymal stem cells (MSCs) offer promising therapy because they regulate the immune system and help repair tissues. However, challenges such as low cell survival rates, immune rejection, and ethical concerns related to their clinical use have limited their widespread application. To overcome these limitations, MSC-derived exosomes (MSC-EXOs) have emerged as an innovative and promising cell-free therapeutic strategy. MSC-EXOs are nanosized extracellular vesicles released by MSCs that carry a diverse array of bioactive molecules, including proteins, lipids, and nucleic acids. They share many benefits with MSCs, including immune regulation, anti-inflammatory effects, and tissue repair. MSC-EXOs demonstrate therapeutic potential by modulating the tumor microenvironment, suppressing tumor growth, and enhancing the efficacy of conventional therapies. They can specifically target cells, deliver therapeutic agents, and induce apoptosis in cancer cells. Additionally, MSC-EXOs can modulate the immune response, promote hematopoietic recovery, and alleviate treatment-related side effects. While MSC-EXOs present a promising therapeutic approach, several challenges remain, including the standardization of isolation and characterization methods, understanding their mechanisms of action, and ensuring both safety and efficacy. Despite these challenges, the future of MSC-EXO-based therapies in hematology is promising. Continued research efforts are essential to unravel the intricate biology of exosomes, identify novel biomarkers, and develop innovative therapeutic strategies. By harnessing the power of MSC-EXOs, we can revolutionize the treatment of hematological diseases and improve patient outcomes.