4.7 Review

Interactions between mitochondrial dysfunction and other hallmarks of aging: Paving a path toward interventions that promote healthy old age

Journal

AGING CELL
Volume -, Issue -, Pages -

Publisher

WILEY
DOI: 10.1111/acel.13942

Keywords

ageing; aging; hallmarks of aging; mitochondria

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Current research on human aging has been guided by the hallmarks of aging proposed in 2013. Most studies have focused on individual hallmarks, but recent research has explored the complex interactions between multiple hallmarks and their effects over time. Understanding these interconnections will greatly benefit aging research and the development of effective interventions for promoting healthy aging.
Current research on human aging has largely been guided by the milestone paper hallmarks of aging, which were first proposed in the seminal 2013 paper by Lopez-Otin et al. Most studies have focused on one aging hallmark at a time, asking whether the underlying molecular perturbations are sufficient to drive the aging process and its associated phenotypes. More recently, researchers have begun to investigate whether aging phenotypes are driven by concurrent perturbations in molecular pathways linked to not one but to multiple hallmarks of aging and whether they present different patterns in organs and systems over time. Indeed, preliminary results suggest that more complex interactions between aging hallmarks must be considered and addressed, if we are to develop interventions that successfully promote healthy aging and/or delay aging-associated dysfunction and diseases. Here, we summarize some of the latest work and views on the interplay between hallmarks of aging, with a specific focus on mitochondrial dysfunction. Indeed, this represents a significant example of the complex crosstalk between hallmarks of aging and of the effects that an intervention targeted to a specific hallmark may have on the others. A better knowledge of these interconnections, of their cause-effect relationships, of their spatial and temporal sequence, will be very beneficial for the whole aging research field and for the identification of effective interventions in promoting healthy old age.

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