What this means
Researchers tested a tea root extract on human skin cells that had been made old in a dish. The extract killed more of the old cells than normal ones, and it also cut some inflammation signals. This does not show the extract works in people, because the tests were done in cells and skin samples.
Plain-English summary written by an AI model from the abstract. The original is below.
- Who it was tested in
- Human skin cells in a lab dish; skin biopsies outside the body
- Kind of research
- A study
The science
- Original title
- Plant-Derived Senolytic Ingredient, Camellia sinensis Root Extract, Ameliorates Skin Aging-Associated Phenotypes.
- Authors
- Park S, Cho S, Min D et al.
- Journal
- Experimental dermatology
- Published
- Oct 13, 2026
- Study type
- Study · in humans
- PMID
- 42865293 ↗
Abstract
Senescent cells affect neighbouring cells via the senescence-associated secretory phenotype (SASP), which involves proinflammatory cytokines, chemokines and proteases. Camellia sinensis root extract (SENOMUNE) has shown therapeutic potential for skin aging-related disorders. However, whether it exerts senolytic effect remains to be explored. Thus, this study aimed to assess the senolytic properties of SENOMUNE in a stress-induced premature senescence model in normal human dermal fibroblasts (NHDFs) through cell viability assays, quantitative reverse transcription polymerase chain reaction, western blot and flow cytometry. NHDFs were induced to senescence using doxorubicin and insulin-like growth factor-1. The senolytic effect of SENOMUNE was evaluated by measuring senescence-associated β-galactosidase activity, gene and protein expression, and the apoptosis rate. SENOMUNE reduced the viability of senescent cells in a dose-dependent manner, with a more pronounced effect in senescent cells than in control cells. It was also associated with caspase-independent programmed cell death involving apoptosis-inducing factor and lysosomal membrane permeabilization in senescent cells. Moreover, SENOMUNE reduced the production of SASP factors, increased the expression of skin barrier-associated markers, and attenuated pigmentation by modulating the secretion of inflammatory cytokines. These effects were evaluated using conditioned media derived from senescent fibroblasts and validated through ex vivo skin biopsy experiments. Our results suggest that SENOMUNE exhibits senolytic properties and thus is a promising anti-aging phytopharmaceutical ingredient for managing skin-related disorders.
Park S, Cho S, Min D et al. Plant-Derived Senolytic Ingredient, Camellia sinensis Root Extract, Ameliorates Skin Aging-Associated Phenotypes. Experimental dermatology. 2026. doi:10.1111/exd.70366. PMID: 42865293. https://pubmed.ncbi.nlm.nih.gov/42865293/
Related research
New fluorescent sensor detects cells aging from cancer and lung drugs
Researchers built a glowing probe that lights up only in certain aged cells. It may help scientists track these cells in living animals, but this is early lab work.
Mixing a senescence-clearing drug with trametinib slowed glioma regrowth in mice
Researchers found a drug combination that cleared aging-like tumour cells in mice and slowed regrowth. This does not show the combination would work the same way in children.
A vaccine-style treatment in mice eased diabetes signs and aged cell markers
Mice given a treatment aimed at a virus-like gene showed less weight gain and better blood sugar control. This study was in mice and cells, so it does not show the same would happen in people.
Aging cells that support stem cells may disrupt them through chemical signals
This is a review that pulls together older and newer studies. It proposes a model, but it does not show that the model is true.
Cx43 protein may boost breast cancer drug response in lab tests
Researchers studied a protein called Cx43 that helps cells talk to each other. They found it may help a breast cancer drug slow tumor growth. This early work is not yet checked by other scientists, so it does not show this would help people.
A new vaccine clears aging cells in mice and may extend lifespan
Researchers made a vaccine aimed at old, worn-out cells called senescent cells. In mice, it cleared some of these cells and helped metabolism. This is early work, so it does not show the vaccine would help people.
See all research on Senolytics →