Identification and Targeting of Noncanonical Death Resistant Cells

Photo by Erin Ashford
Photo by Erin Ashford

SENS Research Foundation Research Center

Forever Healthy Foundation Fellowship in Rejuvenation Biotechnology

Principal Investigator: Tesfahun Admasu / Alexandra Stolzing

When cells age, they lose their proliferative capacity and stop dividing in a phenomenon called senescence. Cellular senescence decreases the regenerative capacity of cells and tissues.

Throughout the aging process, senescent cells accumulate and secrete a characteristic set of proteins, called a senescence-associated secretory phenotype (SASP). Although SASPs act as tumor suppressors and recruit immune cells to repair damage, they also exacerbate the deleterious effects of senescence in the development of pathologies such as cancer, neurodegenerative diseases, and diabetes. Furthermore, SASPs can induce senescence in surrounding cells (called ‘secondary senescence’ or ‘paracrine senescence’), which can aggravate the effect. While primary senescent cells are fairly well characterized at this point, not much is known about secondary senescent cells and how they are arise in vivo.

Project Goals

This project seeks to confirm the hypothesis that secondary senescent cells are different from primary senescent cells, and would therefore need a different senolytic to eradicate them. In addition, the project will study how SASP components mediate the spread of senescence. This work could provide us with the basis for a new, therapeutically viable hypothesis for stopping the spread.

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