Related Experiment Video
Updated: May 2, 2026
SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs
Published on: June 28, 2019
Autophagy revealed as a targetable vulnerability in senescent cells by cell painting phenotypic profiling: a
Matthew Lacey1,2, Lucie Beresova1, Alzbeta Srovnalova1
1Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University and University Hospital, Olomouc, Czech Republic.
Abstract:
Senescent cells accumulate with age and contribute to tissue dysfunction and chronic inflammation. Senolytic agents that selectively eliminate senescent cells hold therapeutic promise; however, few mechanistic classes have been established. Using Cell Painting-based morphological profiling, we identified a distinct cluster of senolytic compounds comprised of both known and novel autophagy inhibitors, including AZ191, bafilomycin A1, chloroquine, daurisoline, dauricine, MCOPPB, and its derivative MS1108. These compounds selectively eliminated senescent cells by disrupting autophagic flux. Our findings reveal senescent cell dependence on autophagy as an essential survival mechanism, define the existence of a mechanistically distinct class of senolytics acting through autophagy inhibition, and demonstrate the predictive value of Cell Painting in aging-related drug discovery. Our results provide new insights into senescent cell vulnerability and expand the therapeutic landscape for aging-related pathologies by highlighting autophagy as a targetable dependency.
Insights
Senescent cells, linked to aging and inflammation, can be targeted by new senolytic drugs. These compounds inhibit autophagy, a key survival process in senescent cells, offering a novel therapeutic strategy for age-related diseases.
Area of Science:
- Cell Biology
- Aging Research
- Drug Discovery
Background:
- Senescent cells accumulate with age, driving tissue dysfunction and chronic inflammation.
- Senolytic agents offer therapeutic potential by selectively eliminating senescent cells, but new mechanisms are needed.
Purpose of the Study:
- To identify novel mechanistic classes of senolytic compounds.
- To investigate the role of autophagy in senescent cell survival.
- To explore the utility of Cell Painting in aging-related drug discovery.
Main Methods:
- Utilized Cell Painting-based morphological profiling to screen compounds.
- Identified senolytic compounds that inhibit autophagy.
- Validated the selective elimination of senescent cells by autophagy inhibitors.
Main Results:
- Discovered a distinct cluster of senolytic compounds, including novel autophagy inhibitors.
- Demonstrated that these compounds selectively eliminate senescent cells by disrupting autophagic flux.
- Confirmed senescent cells' dependence on autophagy for survival.
Conclusions:
- Established autophagy inhibition as a mechanistically distinct class of senolytics.
- Highlighted autophagy as a targetable dependency in senescent cells.
- Showcased Cell Painting's predictive value for aging-related drug discovery.
More Related Videos
08:52Measurement of Protein Turnover Rates in Senescent and Non-Dividing Cultured Cells with Metabolic Labeling and Mass Spectrometry
Published on: April 6, 2022
13:59A Quantitative Measurement of Reactive Oxygen Species and Senescence-associated Secretory Phenotype in Normal Human Fibroblasts During Oncogene-induced Senescence
Published on: August 12, 2018
Related Concept Videos
01:27Autophagy
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
01:36Delivery Pathways to the Lysosome
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
01:18Autophagic Cell Death
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...