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抑制Axl可增强对NRAS突变黑色素瘤细胞中PI3K/Akt通路靶向抑制的治疗效果。

Inhibition of Axl Promotes the Therapeutic Effect of Targeted Inhibition of the PI3K/Akt Pathway in NRAS Mutant Melanoma Cells.

作者信息

Gao Xuejun, Xue Dandan, Cheng Jingjing, Zhang Xin, Cai Xia

机构信息

Department of Thyroid Surgery, Affiliated Hospital of Qingdao University, Qingdao, China.

Department of Medical Oncology, Affiliated Hospital of Qingdao University, Qingdao, China.

出版信息

J Oncol. 2022 Mar 11;2022:2946929. doi: 10.1155/2022/2946929. eCollection 2022.

Abstract

Melanoma is a malignant tumor produced by highly aggressive and metastatic melanocytes. NRAS mutation is a relatively common mutation in melanoma cells. Mitogen-activated protein kinase (MAPK) signaling pathway and the PI3K/Akt pathway in melanoma cells are relatively common signaling pathways. In this study, we investigated the effect of inhibition of Axl expression on the targeted inhibition of the PI3K/Akt pathway in NRAS-mutant melanoma cells. In this study, immunohistochemistry and western blot methods were used to detect the expression of Axl and Akt proteins in melanoma cells. Axl inhibitor was added, and it detected the inhibitory efficiency of Akt inhibitor in melanoma cells. Finally, a melanoma mouse model was established, and it detected the proliferation and apoptosis of mouse tumor cells induced by Axl inhibitor and Akt inhibitor. The results showed that Axl and Akt were highly expressed in NRAS-mutant melanoma cells, and stimulation of Axl expression could reduce the inhibitory effect of Akt inhibitor on melanoma cells. The addition of Axl inhibitor can synergistically promote the effect of Akt inhibitor, slow down the proliferation of tumor cells, and induce cell apoptosis. According to the experiment in this study, Axl inhibitor combined with Akt inhibitor has a stronger therapeutic effect on melanoma than Akt inhibitor alone.

摘要

黑色素瘤是由具有高度侵袭性和转移性的黑素细胞产生的恶性肿瘤。NRAS突变是黑色素瘤细胞中相对常见的突变。黑色素瘤细胞中的丝裂原活化蛋白激酶(MAPK)信号通路和PI3K/Akt通路是相对常见的信号通路。在本研究中,我们研究了抑制Axl表达对NRAS突变型黑色素瘤细胞中PI3K/Akt通路靶向抑制的影响。在本研究中,采用免疫组织化学和蛋白质印迹法检测黑色素瘤细胞中Axl和Akt蛋白的表达。加入Axl抑制剂,并检测其对黑色素瘤细胞中Akt抑制剂的抑制效率。最后,建立黑色素瘤小鼠模型,并检测Axl抑制剂和Akt抑制剂诱导的小鼠肿瘤细胞的增殖和凋亡。结果表明,Axl和Akt在NRAS突变型黑色素瘤细胞中高表达,刺激Axl表达可降低Akt抑制剂对黑色素瘤细胞的抑制作用。加入Axl抑制剂可协同增强Akt抑制剂的作用,减缓肿瘤细胞增殖并诱导细胞凋亡。根据本研究中的实验,Axl抑制剂与Akt抑制剂联合使用对黑色素瘤的治疗效果比单独使用Akt抑制剂更强。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bcc9/8933087/c3a7fae80b2c/JO2022-2946929.001.jpg

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