ArticleGenes & genomics2023
Suppression of TBCK enhances TRAIL-mediated apoptosis by causing the inactivation of the akt signaling pathway in human renal carcinoma Caki-1 cells.
Article in Genes & genomics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 3 citations in OpenAlex.
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6 authors at 1 institution in 1 country.
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Abstract
backgroundTBC1 domain-containing kinase (TBCK) protein functions as a growth suppressor in certain cell types and as a tumor promoter in others. Although TBCK knockdown increases the responsiveness of cancer cells to anticancer drugs, the detailed mechanisms by which TBCK knockdown increases susceptibility to anticancer drugs remain unknown.
objectiveThis study analyzed the role of TBCK in sensitivities to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and doxorubicin in human renal cancer cells.
methodsFlow cytometry was employed to evaluate the extent of apoptosis. Western blotting, transient transfection, and lentiviral infection techniques were conducted to investigate the impact of TBCK on apoptosis-related protein expression and mitogen-activated protein kinase (MAPK).
resultsTBCK knockdown in renal cancer cells inhibits ERK and Akt signaling pathways and increases TRAIL and doxorubicin sensitivity. In TBCK-knockdown Caki-1 cells, ERK and Akt phosphorylation was suppressed compared to control cell lines, and TRAIL and doxorubicin sensitivities were increased in these cells. In addition, the phosphorylation of PDK1 was suppressed in TBCK-suppressed cells, indicating that TBCK may be involved in the PDK1 and Akt signaling pathways. The introduction of dominantly active Akt into TBCK-suppressed cells restored their sensitivity to TRAIL. In addition, TBCK downregulation enhanced TRAIL sensitivity in different renal cancer cell lines.
conclusionsThese data suggest that TBCK could potentially have a crucial function in influencing the effects of anti-cancer drugs including TRAIL by modulating the signaling pathway involving Akt and PDK1 in human renal cancer cells.
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