4.6 Article

KRT81 Knockdown Inhibits Malignant Progression of Melanoma Through Regulating Interleukin-8

Journal

DNA AND CELL BIOLOGY
Volume 40, Issue 10, Pages 1290-1297

Publisher

MARY ANN LIEBERT, INC
DOI: 10.1089/dna.2021.0317

Keywords

KRT81; melanoma; proliferation; migration; invasion; IL-8

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This study identified that upregulated expression of KRT81 in melanoma tissues and cell lines. Knockdown of KRT81 inhibited proliferation, colony formation, migration, invasion, and promoted apoptosis of melanoma cells, as well as increased chemosensitivity. Mechanistically, KRT81 knockdown downregulated IL-8, suggesting KRT81 as a potential therapeutic target for melanoma.
KRT81 is involved in carcinogenesis and progression of many types of human cancers. However, little is known about the role of KRT81 in melanoma. In this study, we identified that KRT81 expression is upregulated in melanoma tissues compared with corresponding adjacent nontumor tissues. Overexpression of KRT81 was also found in human melanoma cell lines. Cell functional studies have shown that KRT81 knockdown could inhibit proliferation, colony formation, migration, invasion, and promote apoptosis of A375 cells. Consistently, in vivo tumorigenesis experiments showed that KRT81 knockdown significantly suppressed the growth of xenograft tumors. Moreover, KRT81 knockdown increased the chemosensitivity of A375 cells to DDP. Mechanical exploration revealed that KRT81 knockdown mediated the downregulation of inflammatory cytokine interleukin-8 (IL-8). In conclusion, these findings indicate that downregulation of KRT81 could inhibit progression of melanoma by regulating IL-8. Therefore, KRT81 represents a potential therapeutic target for melanoma therapy.

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