1. Assessment of TSPAN Expression Profile and Their Role in the VSCC Prognosis
- Author
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Rafael Malagoli Rocha, Andrey Senos Dobroff, Katia Candido Carvalho, Bruna Cristine de Almeida, Edmund Chada Baracat, Kelly Pedrozo Ferreira, Fernando Augusto Soares, Glauco Baiocchi, and Laura Gonzalez Dos Anjos
- Subjects
0301 basic medicine ,Vulvar Squamous Cell Carcinoma ,Kaplan-Meier Estimate ,0302 clinical medicine ,Risk Factors ,Biology (General) ,Spectroscopy ,Vulvar Neoplasms ,CD63 ,Cell migration ,General Medicine ,Middle Aged ,Computer Science Applications ,tetraspanins ,Gene Expression Regulation, Neoplastic ,Chemistry ,030220 oncology & carcinogenesis ,immunohistochemistry ,Carcinoma, Squamous Cell ,Female ,Disease Susceptibility ,Adult ,endocrine system ,QH301-705.5 ,Biology ,Models, Biological ,Article ,Catalysis ,Inorganic Chemistry ,03 medical and health sciences ,Downregulation and upregulation ,Humans ,Gene silencing ,Metastasis suppressor ,Physical and Theoretical Chemistry ,VSCC ,Molecular Biology ,QD1-999 ,Aged ,Neoplasm Staging ,cell culture ,Organic Chemistry ,030104 developmental biology ,siRNA ,Cancer research ,HPV infection ,prognosis ,Neoplasm Grading ,Transcriptome ,CD82 ,CD81 - Abstract
The role and prognostic value of tetraspanins (TSPANs) in vulvar squamous cell carcinoma (VSCC) remain poorly understood. We sought to primarily determine, at both the molecular and tissue level, the expression profile of the TSPANs CD9, CD63, CD81, and CD82 in archived VSCC samples (n = 117) and further investigate their clinical relevance as prognostic markers. Our studies led us to identify CD63 as the most highly expressed TSPAN, at the gene and protein levels. Multicomparison studies also revealed that the expression of CD9 was associated with tumor size, whereas CD63 upregulation was associated with histological diagnosis and vascular invasion. Moreover, low expression of CD81 and CD82 was associated with worse prognosis. To determine the role of TSPANs in VSCC at the cellular level, we assessed the mRNA levels of CD63 and CD82 in established metastatic (SW962) and non-metastatic (SW954) VSCC human cell lines. CD82 was found to be downregulated in SW962 cells, thus supporting its metastasis suppressor role. However, CD63 was significantly upregulated in both cell lines. Silencing of CD63 by siRNA led to a significant decrease in proliferation of both SW954 and SW962. Furthermore, in SW962 particularly, CD63-siRNA also remarkably inhibited cell migration. Altogether, our data suggest that the differential expression of TSPANs represents an important feature for prognosis of VSCC patients and indicates that CD63 and CD82 are likely potential therapeutic targets in VSCC.
- Published
- 2021