Assessment of TSPAN Expression Profile and Their Role in the VSCC Prognosis

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 fu...

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Bibliographic Details
Published in:International journal of molecular sciences 2021-05, Vol.22 (9), p.5015
Main Authors: Ferreira, Kelly Pedrozo, de Almeida, Bruna Cristine, dos Anjos, Laura Gonzalez, Baiocchi, Glauco, Soares, Fernando Augusto, Rocha, Rafael Malagoli, Baracat, Edmund Chada, Dobroff, Andrey Senos, Carvalho, Katia Candido
Format: Article
Language:English
Subjects:
Cancer therapies
CD63 antigen
CD81 antigen
CD9 antigen
cell culture
Chemotherapy
Gene expression
Genital cancers
HPV infection
Human papillomavirus
immunohistochemistry
Infections
Medical prognosis
Medical records
Melanoma
Metastases
Metastasis
mRNA
Prognosis
Protein expression
Proteins
siRNA
Squamous cell carcinoma
tetraspanins
Therapeutic targets
Tumors
VSCC
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Summary: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.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms22095015