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Related Experiment Video

Updated: May 4, 2026

Characterization of In Vitro Differentiation of Human Primary Keratinocytes by RNA-Seq Analysis
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Key differences identified between actinic keratosis and cutaneous squamous cell carcinoma by transcriptome

S R Lambert1, N Mladkova2, A Gulati2

  • 11] Centre for Cutaneous Research, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK [2] Cancer Research UK Skin Tumour Laboratory, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.

British Journal of Cancer
|December 17, 2013
PubMed
Summary

The mitogen activated protein kinase (MAPK) pathway is crucial for the progression of actinic keratoses (AKs) to cutaneous squamous cell carcinoma (cSCC). Targeting this pathway may prevent cSCC development.

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Area of Science:

  • Dermatology
  • Oncology
  • Molecular Biology

Background:

  • Cutaneous squamous cell carcinoma (cSCC) is a prevalent and increasing skin cancer in fair-skinned individuals.
  • The molecular mechanisms driving cSCC development from premalignant lesions remain unclear.
  • Understanding these molecular events is critical for advancing therapeutic strategies.

Purpose of the Study:

  • To identify key molecular differences between actinic keratoses (AKs) and invasive cSCC.
  • To elucidate the genetic alterations underlying the progression from AK to cSCC.
  • To explore potential therapeutic targets for cSCC prevention and treatment.

Main Methods:

  • Transcriptome profiling using Affymetrix HGU133 Plus 2.0 microarrays.
  • Laser capture microdissection to isolate cells from 30 cSCC and 10 AK samples.
  • Gene set enrichment analysis to identify key biological pathways involved.

Main Results:

  • A core set of 196 differentially expressed genes was identified between AK and cSCC.
  • These genes are involved in epidermal differentiation, cell migration, cell-cycle regulation, and metabolism.
  • The mitogen activated protein kinase (MAPK) pathway was significantly upregulated in cSCC compared to AK.

Conclusions:

  • The MAPK pathway plays a pivotal role in the transition from AK to cSCC, suggesting it as a potential target for prevention.
  • Transcriptome differences between cSCC subtypes highlight the need for tailored therapeutic approaches.
  • Further research into MAPK signaling could lead to novel targeted therapies for cSCC.