ArticleReports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology2025
Small RNA sequencing of formalin-fixed paraffin embedded human skin biopsies reveals miRNA signatures for actinic keratosis and squamous cell carcinoma.
Article in Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Histopathological characterization is a common method employed to identify actinic keratosis and squamous cell carcinoma. Oftentimes, formalin-fixed paraffin-embedded (FFPE) skin biopsies are accessible in repositories for retrospective analysis. Materials and methods: In this study, we extracted total ribonucleic acid (RNA) from FFPE specimens, successfully conducted small RNA sequencing and performed differential expression analysis to assess candidate biomolecular signatures that are unique and similar between different skin lesions and their malignant transformations. Results and conclusions: Although RNA sequencing of FFPE specimens is challenging and requires further optimization, we identified several candidate microRNAs (miRNAs) across all 3 stages of keratinocytic intraepidermal neoplasia, including the upregulation of hsa-miR-145-5p, hsa-miR-30-5p, and hsa-miR-205-5p and downregulation of hsa-miR-486-5p against healthy controls. These miRNAs may serve as a potential diagnostic, prognostic, and therapeutic biomarkers for skin cancer. Future studies are needed to improve methods for FFPE analysis and to validate the key differences in miRNA signatures involved in skin cancer development.
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