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Updated: Jul 15, 2026

Cell Population Analyses During Skin Carcinogenesis
Published on: August 21, 2013
GSDMA deficiency impairs cutaneous squamous cell carcinoma growth
Manyun Li1, Jinghan Song1, Qin Gao1
1Ministry of Education (MOE) Key Laboratory of Model Animals for Disease Study, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center, National Resource Center for Mutant Mice of China, Nanjing Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing, China.
Abstract:
As a member of Gasdermin family, GSDMA is predominantly expressed in epidermal keratinocytes, hair follicle stem cells, and the upper gastrointestinal epithelium. Although it has been reported that GSDMA can be cleaved to trigger pyroptosis, its physiological function remains unclear. In this study, our results uncover a new role of GSDMA in the initiation and progression of cutaneous squamous cell carcinoma (cSCC). Deficiency of Gsdma1/2/3 strongly inhibits cSCC initiation and progression in mice. There is a significant upregulation of Gsdma1 expression in cSCC, but not Gsdma2 or Gsdma3. Mechanistically, we found that deficiency of Gsdma1/2/3 impairs EGFR-AKT axis-mediated cell proliferation during the progression of cSCC. Our findings suggest that GSDMA plays a promoting role in cSCC proliferation and may represent a potential therapeutic target.
Insights
Gasdermin A (GSDMA) promotes skin cancer (cSCC) by enhancing cell proliferation. Its deficiency inhibits cSCC progression, suggesting GSDMA as a potential therapeutic target for this skin malignancy.
Area of Science:
- Oncology
- Dermatology
- Molecular Biology
Background:
- Gasdermin A (GSDMA) is expressed in epithelial cells, with known roles in pyroptosis.
- The physiological function of GSDMA, particularly in skin, remains largely undetermined.
- Cutaneous squamous cell carcinoma (cSCC) is a common skin cancer with significant morbidity.
Purpose of the Study:
- To investigate the role of GSDMA in the initiation and progression of cutaneous squamous cell carcinoma (cSCC).
- To elucidate the molecular mechanisms by which GSDMA influences cSCC development.
Main Methods:
- Utilized mouse models with Gsdma1/2/3 deficiency to assess cSCC initiation and progression.
- Analyzed GSDMA expression levels in human cSCC tissues.
- Investigated the involvement of the EGFR-AKT signaling pathway in GSDMA-mediated cSCC proliferation.
Main Results:
- Gsdma1/2/3 deficiency significantly inhibited cSCC initiation and progression in mice.
- Gsdma1 expression was significantly upregulated in human cSCC samples, while Gsdma2 and Gsdma3 were not.
- GSDMA deficiency impaired EGFR-AKT axis-mediated cell proliferation during cSCC progression.
Conclusions:
- GSDMA plays a critical promoting role in the proliferation and progression of cutaneous squamous cell carcinoma.
- GSDMA may serve as a potential therapeutic target for treating cSCC.
- Understanding GSDMA's function provides new insights into skin cancer development.
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