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Sialidase May Serve As a Potential Biomarker of Proliferation, Migration and Prognosis in Melanoma

Overview
Journal World J Oncol
Specialty Oncology
Date 2022 Sep 21
PMID 36128592
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Abstract

Background: Melanoma is a kind of malignant tumor with high mortality originating from melanocytes. It is urgent to find new molecular biomarkers for prognosis and new treatment methods for melanoma. As an important molecule of sialidase family, neuraminidase-1 () has been found to play an important role in regulating the occurrence and progression of tumors, but the role of in melanoma is not sure.

Methods: The expression level of in melanoma and normal tissues was evaluated by analyzing the expression data from ONCOMINE, UALCAN and GEPIA database. The mutation, copy number alteration and gene correlation of in melanoma were evaluated by analyzing the melanoma data from cBioPortal database The protein expression levels of NEU1 were further validated by immunohistochemical (IHC) staining data from The Human Protein Atlas database. The melanoma data in TIMER 2.0 database were used to analyze the correlation between expression and immune cell infiltration. The proliferative and migratory abilities of melanoma cells were examined by cell proliferation and migration assay and nude mice.

Results: We discovered that was highly expressed in melanoma samples compared with normal samples. The alteration frequency of in melanoma patients reached 18%, and most of them were "mutation" type. The expression of was positively correlated with the overall survival of patients with melanoma. The expression of was positively correlated with the expression of proliferation marker and epithelial-mesenchymal transition marker and negatively correlated with the expression of apoptosis marker and . Moreover, the expression level of was related to the infiltration of immune cells in melanoma. Knockdown of attenuated the proliferative and migratory abilities of melanoma cells, as well as tumor progression of melanoma cells.

Conclusions: These findings suggest that may play a key role in the development of melanoma and may be used as a prognostic target of melanoma.

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