Mouse and cell study: age-related CMA decline and senescent cell clearance
In cells and mice, an age-related decline of chaperone-mediated autophagy (CMA) changed senescent cells and impaired their clearance by macrophages; activating CMA reduced senescent cell burden in aged mice. [1]
Automatic summary · not editorially reviewed
The key findings
An age-related decline of chaperone-mediated autophagy changed senescent cell properties and impaired their immune clearance in cells and mice. [1]
Secreted factors from CMA-deficient senescent cells inhibited macrophage CMA and impaired engulfment of senescent cells. [1]
Pharmacological CMA activation reduced senescent cell burden in aged mice and disease severity in a mouse pulmonary fibrosis model. [1]
The source at a glance
- Study type / format
- Preclinical cell and mouse study (abstract)
- Population / context
- Cells and mice, including aged mice and a mouse model of pulmonary fibrosis
- Summary based on
- Study abstract
- Original publication
- October 5, 2026
CMA decline and senescent cell features in cells
The abstract notes that autophagy dysfunction and senescence are established drivers of aging, but how they interact was poorly understood. The authors report that an age-related decline of CMA, a pathway for selective lysosomal protein degradation, changes the properties of senescent cells. Cells lacking CMA still became senescent, but their proteins, metabolism and secreted factors resembled those of senescent cells in aged organisms. Their senescence-associated secretory phenotype had stronger pro-senescence effects on neighboring cells.
Supporting source [1]
Macrophage CMA, senescent cell engulfment and mouse findings
The secreted factors of these cells inhibited CMA in macrophages, which impaired the macrophages' ability to engulf senescent cells. Blocking CMA specifically in macrophages increased senescent cell accumulation in mice and delayed resolution of senescence during wound healing. Conversely, pharmacological activation of CMA reduced senescent cell burden in aged mice and disease severity in a mouse model of pulmonary fibrosis.
Supporting source [1]
Interpretation and limits of this abstract
The authors conclude that CMA decline drives the persistence of senescent cells and that increasing CMA is a promising strategy to promote senescence resolution in aged organisms. These are findings from cells and mice, not evidence of human lifespan or health benefits. The abstract does not report sample sizes, follow-up periods or how CMA was measured, and the full text was not reviewed.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. Findings come from cells and mice, with no sample sizes, follow-up or measurement details reported. Human benefits are not shown.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Sereda R, Lindenau K, Diaz A, Liu Z, Santiago-Fernández O, Khawaja RR, Cutler R, Calyeca J, McCabe M, Durand S, Aprahamian F, Vanegas NDP, Chen H, Vilicich F, Chavda B, Botbol Y, Kroemer G, Finkel T, Gavathiotis E, Sidoli S, Mora AL, Rojas M, Kaushik S, Cuervo AM. · europepmc.org · October 5, 2026