지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.2
- 수록면
- 165 - 173 (9page)
- DOI
- 10.1007/s13258-021-01201-0
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초록· 키워드
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Background
Neferine is the major alkaloid extracted from a seed embryo of Nelumbo nucifera and shows cytotoxic effects in various human cancer cells. However, no detailed studies have been reported on its antitumor efficacy of a combinational treatment in human renal cancer cells.
Objective
This study evaluated the antitumor effects of a combination therapy of neferine and various drugs on renal cancer Caki-1 cells.
Methods
Flow cytometry analysis was performed to evaluate the cell cycle analysis and apoptosis, respectively. Western blotting and reverse transcription polymerase chain reaction were performed to analyze the effect of neferine on the expression of apoptosis-related genes in Caki-1 cells. In addition, reactive oxygen species (ROS) generation was evaluated using flow cytometry.
Results
Treatment with neferine dose-dependently induces apoptosis and Bcl-2 downregulation in Caki-1 cells. In addition, neferine triggers cell cycle arrest at the G2/M phase in Caki-1 cells. The neferine-induced apoptosis was mediated by ROS generation, and neferine-facilitated Bcl-2 downregulation was regulated at the transcriptional level through the suppression of p65 expression, resulting in inactivation of the NF-κB pathway in Caki-1 cells. The ROS scavenger, N-acetyl-l-cysteine (NAC), intensely reversed the effects of neferine on apoptosis and Bcl-2 downregulation. We determined that neferine markedly potentiates the antitumor effects of multiple anticancer drugs (cisplatin, silybin, and thapsigargin), and those effects can be reversed by Bcl-2 overexpression or NAC pretreatment in Caki-1 cells.
Conclusion
These results suggest that neferine can increase chemosensitivities to anticancer drugs via downregulation of Bcl-2 expression through ROS-dependent suppression of the NF-κB signaling pathway in human renal cancer cells.
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