What’s Really Inside Your Stem Cell Injection? Shocking Findings Revealed.
Researchers from the University of California San Diego have discovered that two frequently administered stem cell therapies, often used interchangeably, contain completely different types of cells. These findings challenge the current “one-cell-cures-all” paradigm in orthopedic stem cell therapeutics and underscore the need for more informed and rigorous characterization of injectable stem cell therapies before they are marketed to patients.
The study, published on July 12, 2024, in Science Advances, analyzed cell populations of autologous bone marrow aspirate concentrate (BMAC) and adipose-derived stromal vascular fraction (ADSVF) collected from the same subjects. Both therapies are derived from a patient’s own cells—bone marrow in BMAC and adipose tissue (fat) in ADSVF—and are believed to contain mesenchymal stem/stromal cells (MSCs), which can differentiate into muscle, bone, and other connective tissues.
Due to their similarities, BMAC and ADSVF are often marketed as interchangeable “stem cell therapies” for treating various musculoskeletal and skin conditions, especially in professional athletes. However, little research has characterized the composition and underlying biology of these two therapies.
This lack of information has hindered rigorous clinical investigations into the ideal dosages for these therapies and, according to the researchers, has contributed to misinformation in the marketing of treatments within the $11.9 billion-dollar stem cell industry.
To address this gap, the researchers analyzed 62 BMAC cell populations and 57 ADSVF populations, creating a cellular atlas detailing the types of cells present in each therapy, the active genes, and the proteins present. The atlas revealed that MSC concentrations in BMAC formulations were extremely low and that there were no comparable “stem cell” types in both therapies. BMAC mainly comprised red and white blood cells, while ADSVF primarily consisted of connective tissue cells.
Moreover, many proteins associated with regenerative functions were either absent or found in extremely low concentrations in both therapies, raising questions about their mechanisms of action and overall efficacy.
The findings suggest that the active ingredients in biologic therapies like BMAC and ADSVF need more thorough definition. The researchers advocate for the field to move towards more standardized cell therapies, where clinically necessary doses of cell and protein concentrations are carefully quantified.
Source: What’s Really Inside Your Stem Cell Injection? Shocking Findings Revealed
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