1. Expression and Functions of Formyl Peptide Receptor 1 in Drug-Resistant Bladder Cancer.
- Author
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Jiang X, Lei T, and Zhang M
- Subjects
- Antineoplastic Agents pharmacology, Apoptosis drug effects, Apoptosis genetics, Cell Cycle drug effects, Cell Cycle genetics, Cell Line, Tumor, Cell Movement drug effects, Cell Movement genetics, Cell Proliferation drug effects, Cell Survival drug effects, Cell Survival genetics, Humans, Receptors, Formyl Peptide metabolism, Urinary Bladder Neoplasms drug therapy, Urinary Bladder Neoplasms metabolism, Urinary Bladder Neoplasms pathology, Drug Resistance, Neoplasm genetics, Gene Expression, Receptors, Formyl Peptide genetics, Urinary Bladder Neoplasms genetics
- Abstract
Objective: To explore the correlation of formyl peptide receptor 1 expression with drug resistance and the functions of formyl peptide receptor 1 in drug-resistant bladder cancer., Methods: Expression of formyl peptide receptor 1 in T24 and T24/DDP cisplatin-resistant bladder cancer cell lines was tested by quantitative real-time Polymerase Chain Reaction and Western blotting. After incubation of T24/DDP with N-formyl-Met-Leu-Phe, the phosphor proteins were tested by Western blot analysis. We characterized the functions of formyl peptide receptor 1 in T24/DDP cells by assessing proliferation, migration, and changes of cell cycles., Results: Formyl peptide receptor 1 was expressed in both T24 and T24/DDP, and it was overexpressed in T24/DDP compared with T24. Formyl peptide receptor 1 activation promoted the expression of the messenger RNA of resistance-related proteins, such as multidrug resistance-associated protein 1 (MRP1) and lung resistance-related protein (LRP). The expression of 4 signal pathway proteins were upregulated: signal transducer and activator of transcription 3, Janus kinase 2, extracellular regulated protein kinases, and protein kinase B, while the expression of phosphatidylinositol 3-kinase was observed to be downregulated in drug-resistant bladder cancer cells. Formyl peptide receptor 1 activation also improved the expression of phospho-signal transducer and activator of transcription 3 and phospho-extracellular regulated protein kinases 1/2 and promoted the proliferation and migration of T24/DDP cells. In addition, formyl peptide receptor 1 inhibition led to the change in the cell cycle in T24/DDP., Conclusions: The overexpression of formyl peptide receptor 1 may be related to drug-resistant bladder cancer and promotes the deterioration of drug-resistant bladder cancer.
- Published
- 2018
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