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Full Text: NoSubject: search.filters.subject.Molecular biology and genetics

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    The long and winding road of reprogramming-induced rejuvenation
    (Nature Portfolio, 2024) Gladyshev, Vadim N.; Department of Molecular Biology and Genetics; Yücel, Ali Doğa; Department of Molecular Biology and Genetics;  ; College of Sciences;  
    Organismal aging is inherently connected to the aging of its constituent cells and systems. Reducing the biological age of the organism may be assisted by reducing the age of its cells - an approach exemplified by partial cell reprogramming through the expression of Yamanaka factors or exposure to chemical cocktails. It is crucial to protect cell type identity during partial reprogramming, as cells need to retain or rapidly regain their functions following the treatment. Another critical issue is the ability to quantify biological age as reprogrammed older cells acquire younger states. We discuss recent advances in reprogramming-induced rejuvenation and offer a critical review of this procedure and its relationship to the fundamental nature of aging. We further comparatively analyze partial reprogramming, full reprogramming and transdifferentiation approaches, assess safety concerns and emphasize the importance of distinguishing rejuvenation from dedifferentiation. Finally, we highlight translational opportunities that the reprogramming-induced rejuvenation approach offers. Rejuvenation and partial reprogramming are two frontier areas in the field of aging. Here, the authors summarize advances in these fields and suggest future directions for research and therapy.