Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers

Abstract Background Basal cell carcinoma (BCC) is the most common type of malignant skin tumour, and its incidence is increasing worldwide. While it grows slowly, BCC is locally invasive, causing significant tissue damage. This study investigated the role of mRNAs in BCC through bioinformatics and e...

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Main Authors: Pengfei Fan, Yun Liu, Tengxiao Ma, Qiaoxing Wang, Lei Li
Format: Article
Language:English
Published: Springer 2025-05-01
Series:Discover Oncology
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Online Access:https://doi.org/10.1007/s12672-025-02621-0
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author Pengfei Fan
Yun Liu
Tengxiao Ma
Qiaoxing Wang
Lei Li
author_facet Pengfei Fan
Yun Liu
Tengxiao Ma
Qiaoxing Wang
Lei Li
author_sort Pengfei Fan
collection DOAJ
description Abstract Background Basal cell carcinoma (BCC) is the most common type of malignant skin tumour, and its incidence is increasing worldwide. While it grows slowly, BCC is locally invasive, causing significant tissue damage. This study investigated the role of mRNAs in BCC through bioinformatics and experimental validation to elucidate the molecular mechanisms involved. Methods Differentially expressed genes (DEGs) were identified from the transcriptome data of 30 BCC patients and 16 controls from the GSE7553, GSE103439, and GSE42109 datasets. Gene Ontology and KEGG analyses were performed to explore gene expression and pathways. A protein‒protein interaction (PPI) network was constructed to identify hub genes, and immune cell infiltration was analysed to study the tumour microenvironment. The diagnostic potential of target genes (LEF1, LGR5, and SOX4) was assessed using ROC curves. Gene expression was validated with qPCR and Western blotting. Results A total of 135 DEGs were identified, with 9 hub genes selected. LEF1, LGR5, and SOX4 showed strong diagnostic potential, with AUC values of 0.888, 0.955, and 0.996, respectively. The immune cell analysis revealed increased numbers of B cells, NK cells, and T cells in BCC, whereas the numbers of DCs, pDCs, and Treg cells were reduced. qPCR and Western blotting confirmed increased LEF1 and LGR5 expression in BCC. SOX4 expression was increased according to the qPCR results but was not significantly elevated according to the Western blot results, warranting further validation. Conclusions LEF1, LGR5, and SOX4 may play roles in BCC pathogenesis and could serve as diagnostic biomarkers. These findings provide insights into BCC development and support future research for improved detection and treatment.
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spelling doaj-art-7de5e76f60b543a68d11f9e944e20ab82025-08-20T03:48:18ZengSpringerDiscover Oncology2730-60112025-05-0116111810.1007/s12672-025-02621-0Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkersPengfei Fan0Yun Liu1Tengxiao Ma2Qiaoxing Wang3Lei Li4Department of Plastic and Cosmetic Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical UniversityDepartment of Plastic and Cosmetic Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical UniversityDepartment of Plastic and Cosmetic Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical UniversityDepartment of Plastic and Cosmetic Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical UniversityDepartment of Plastic and Cosmetic Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical UniversityAbstract Background Basal cell carcinoma (BCC) is the most common type of malignant skin tumour, and its incidence is increasing worldwide. While it grows slowly, BCC is locally invasive, causing significant tissue damage. This study investigated the role of mRNAs in BCC through bioinformatics and experimental validation to elucidate the molecular mechanisms involved. Methods Differentially expressed genes (DEGs) were identified from the transcriptome data of 30 BCC patients and 16 controls from the GSE7553, GSE103439, and GSE42109 datasets. Gene Ontology and KEGG analyses were performed to explore gene expression and pathways. A protein‒protein interaction (PPI) network was constructed to identify hub genes, and immune cell infiltration was analysed to study the tumour microenvironment. The diagnostic potential of target genes (LEF1, LGR5, and SOX4) was assessed using ROC curves. Gene expression was validated with qPCR and Western blotting. Results A total of 135 DEGs were identified, with 9 hub genes selected. LEF1, LGR5, and SOX4 showed strong diagnostic potential, with AUC values of 0.888, 0.955, and 0.996, respectively. The immune cell analysis revealed increased numbers of B cells, NK cells, and T cells in BCC, whereas the numbers of DCs, pDCs, and Treg cells were reduced. qPCR and Western blotting confirmed increased LEF1 and LGR5 expression in BCC. SOX4 expression was increased according to the qPCR results but was not significantly elevated according to the Western blot results, warranting further validation. Conclusions LEF1, LGR5, and SOX4 may play roles in BCC pathogenesis and could serve as diagnostic biomarkers. These findings provide insights into BCC development and support future research for improved detection and treatment.https://doi.org/10.1007/s12672-025-02621-0Basal cell carcinomaImmune infiltrationDiagnostic biomarkers
spellingShingle Pengfei Fan
Yun Liu
Tengxiao Ma
Qiaoxing Wang
Lei Li
Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
Discover Oncology
Basal cell carcinoma
Immune infiltration
Diagnostic biomarkers
title Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
title_full Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
title_fullStr Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
title_full_unstemmed Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
title_short Analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
title_sort analysis of immune infiltration in basal cell carcinoma based on transcriptome sequencing and experimental validation of diagnostic biomarkers
topic Basal cell carcinoma
Immune infiltration
Diagnostic biomarkers
url https://doi.org/10.1007/s12672-025-02621-0
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