Cellular Senescence in Human Skin Aging: Leveraging Senotherapeutics
Related Experiment Video
Updated: Jul 12, 2025

Induction and Validation of Cellular Senescence in Primary Human Cells
Published on: June 20, 2018
Saranya P Wyles1, Jean D Carruthers2, Parisa Dashti1
1Department of Dermatology, Mayo Clinic, Rochester, Minnesota, USA.
Background:
As the largest organ in the human body, the skin is continuously exposed to intrinsic and extrinsic stimuli that impact its functionality and morphology with aging. Skin aging entails dysregulation of skin cells and loss, fragmentation, or fragility of extracellular matrix fibers that are manifested macroscopically by wrinkling, laxity, and pigmentary abnormalities. Age-related skin changes are the focus of many surgical and nonsurgical treatments aimed at improving overall skin appearance and health.
Summary:
As a hallmark of aging, cellular senescence, an essentially irreversible cell cycle arrest with apoptosis resistance and a secretory phenotype, manifests across skin layers by affecting epidermal and dermal cells. Knowledge of skin-specific senescent cells, such as melanocytes (epidermal aging) and fibroblasts (dermal aging), will promote our understanding of age-related skin changes and how to optimize patient outcomes in esthetic procedures.
Key Messages:
This review provides an overview of skin aging in the context of cellular senescence and discusses senolytic intervention strategies to selectively target skin senescent cells that contribute to premature skin aging.
Insights
Cellular senescence, a key aging factor, affects skin cells like melanocytes and fibroblasts. Targeting these senescent cells offers potential for improving skin aging and optimizing aesthetic procedures.
Area of Science:
- Dermatology
- Gerontology
- Cell Biology
Background:
- Skin aging is characterized by cellular dysfunction and extracellular matrix degradation, leading to visible signs like wrinkles and altered pigmentation.
- Intrinsic and extrinsic factors accelerate skin aging, impacting its structure and function.
- Treatments for age-related skin changes aim to enhance skin appearance and health.
Purpose of the Study:
- To review skin aging mechanisms, focusing on cellular senescence.
- To explore senolytic interventions for targeting senescent cells in the skin.
- To enhance understanding of age-related skin changes and optimize aesthetic outcomes.
Main Methods:
- Literature review on skin aging and cellular senescence.
- Analysis of cellular senescence markers in epidermal and dermal skin cells.
- Discussion of senolytic agents and their potential application in dermatology.
Main Results:
- Cellular senescence is a significant hallmark of skin aging, affecting both epidermal (melanocytes) and dermal (fibroblasts) cells.
- Senescent cells exhibit resistance to apoptosis and possess a distinct secretory phenotype.
- Senescent cells contribute to the macroscopic signs of skin aging.
Conclusions:
- Understanding skin-specific senescent cells is crucial for addressing age-related skin changes.
- Senolytic interventions hold promise for selectively eliminating senescent cells and mitigating skin aging.
- Targeting cellular senescence may offer novel strategies for improving skin health and aesthetic outcomes.
Related Concept Videos
Renewal of Skin Epidermal Stem Cells
Tissue Renewal without Stem Cells
However, failure of such a system...
The Effect of Aging on Tissues
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Mitochondria
Clinical Applications of Epidermal Stem Cells

