Cellular enlargement - A new hallmark of aging?

• Published in: Frontiers in cell and developmental biology Vol. 10; p. 1036602
• Main Authors: Davies, Daniel M., van den Handel, Kim, Bharadwaj, Soham, Lengefeld, Jette
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 10.11.2022
• Subjects: aging-related diseases; Cell and Developmental Biology; cell size physiology; Cellular enlargement; hallmarks of aging; Medicin och hälsovetenskap; stem cells
• ISSN: 2296-634X; 2296-634X
• DOI: 10.3389/fcell.2022.1036602

Years of important research has revealed that cells heavily invest in regulating their size. Nevertheless, it has remained unclear why accurate size control is so important. Our recent study using hematopoietic stem cells (HSCs) in vivo indicates that cellular enlargement is causally associated with aging. Here, we present an overview of these findings and their implications. Furthermore, we performed a broad literature analysis to evaluate the potential of cellular enlargement as a new aging hallmark and to examine its connection to previously described aging hallmarks. Finally, we highlight interesting work presenting a correlation between cell size and age-related diseases. Taken together, we found mounting evidence linking cellular enlargement to aging and age-related diseases. Therefore, we encourage researchers from seemingly unrelated areas to take a fresh look at their data from the perspective of cell size.