US20260258451
2026-09-03
Chemistry; metallurgy
C12N15/89
Methods and Compositions for Cellular Rejuvenation: The application describes innovative methods and compositions aimed at rejuvenating aged cells and tissues. By utilizing non-integrated mRNAs encoding reprogramming factors, the approach transiently rejuvenates cells while maintaining their differentiated state. This technique is particularly beneficial in cellular rejuvenation, tissue engineering, and regenerative medicine, addressing the need for therapies that avoid the loss of cell identity.
Addressing Aging at the Molecular Level: The application highlights the role of aging in molecular and cellular dysfunction, including epigenetic errors and stem cell exhaustion. Traditional nuclear reprogramming to pluripotency often results in the loss of cell identity, which is problematic for therapeutic applications. The proposed method circumvents this issue by using transient exposure to specific mRNAs, thus maintaining the structure and function of cells.
Application in Various Therapies: The described methods have potential applications in treating age-related diseases, cartilage degeneration disorders, and neurodegenerative conditions. By administering cells transfected with mRNAs encoding reprogramming factors, the methods aim to restore cell functionality without dedifferentiation. The transient reprogramming is achieved through short-term exposure, typically not exceeding five days.
Potential Benefits and Mechanisms: The rejuvenation process involves increased expression of certain proteins and decreased expression of inflammatory markers. This results in improved cellular functions such as autophagosome formation and mitochondrial activity. The methods can be applied to various cell types, including fibroblasts and skeletal muscle stem cells, and are designed to enhance the replicative capacity and lifespan of cells.
Broader Implications and Applications: The methods outlined are versatile, applicable to ex vivo, in vitro, and in vivo settings. They can be used to treat degenerative diseases and improve tissue regeneration. The approach is adaptable to different species, including humans and other mammals, and holds promise for reducing inflammation and enhancing tissue repair in conditions like arthritis and muscle degeneration.