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中华普外科手术学杂志(电子版) ›› 2023, Vol. 17 ›› Issue (02) : 135 -138. doi: 10.3877/cma.j.issn.1674-3946.2023.02.007

论著

PI3K/Akt信号通路通过Plk1影响胰腺癌细胞PANC-1对吉西他滨的化疗敏感性
毛永欢1, 奚玲2, 陆晨3, 刘理想4, 喻春钊5,(), 沈晓菲4,()   
  1. 1. 210008 南京,南京医科大学附属鼓楼临床医学院普通外科;210011 南京,南京医科大学第二附属医院普通外科
    2. 210009 南京,江苏省省级机关医院老年医学科
    3. 210011 南京,南京医科大学第二附属医院普通外科
    4. 210008 南京,南京医科大学附属鼓楼临床医学院普通外科
    5. 210011 南京,南京医科大学第二附属医院普通外科;211112 南京,南京医科大学附属逸夫医院普通外科
  • 收稿日期:2022-04-05 出版日期:2023-04-26
  • 通信作者: 喻春钊, 沈晓菲

PI3K/Akt signaling pathway influences the chemotherapy sensitivity of PANC-1 to gemcitabine in pancreatic cancer cells via Plk1

Yonghuan Mao1, Ling Xi2, Chen Lu3, Lixiang Liu4, Chunzhao Yu5,(), Xiaofei Shen4,()   

  1. 1. Department of General Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing jiangsu Province 210008, China; Department of General Surgery, the Second Affiliated Hospital of Nanjing Medical University, Nanjing jiangsu Province 210011, China
    2. Department of Gerontology, Jiangsu Province Official Hospital, Nanjing jiangsu Province 210009, China
    3. Department of General Surgery, the Second Affiliated Hospital of Nanjing Medical University, Nanjing jiangsu Province 210011, China
    4. Department of General Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing jiangsu Province 210008, China
    5. Department of General Surgery, the Second Affiliated Hospital of Nanjing Medical University, Nanjing jiangsu Province 210011, China; Department of General Surgery, Sir Run Run Hospital of Nanjing Medical University, Nanjing jiangsu Province 211112, China
  • Received:2022-04-05 Published:2023-04-26
  • Corresponding author: Chunzhao Yu, Xiaofei Shen
  • About author:
    Co-first author:Mao Yonghuan;Xi Ling
  • Supported by:
    National Natural Science Foundation of China(81970500); Nanjing Medical University Science and Technology Development Fund(NMUB2020189)
引用本文:

毛永欢, 奚玲, 陆晨, 刘理想, 喻春钊, 沈晓菲. PI3K/Akt信号通路通过Plk1影响胰腺癌细胞PANC-1对吉西他滨的化疗敏感性[J]. 中华普外科手术学杂志(电子版), 2023, 17(02): 135-138.

Yonghuan Mao, Ling Xi, Chen Lu, Lixiang Liu, Chunzhao Yu, Xiaofei Shen. PI3K/Akt signaling pathway influences the chemotherapy sensitivity of PANC-1 to gemcitabine in pancreatic cancer cells via Plk1[J]. Chinese Journal of Operative Procedures of General Surgery(Electronic Edition), 2023, 17(02): 135-138.

目的

探究磷脂酰肌醇3-激酶/蛋白激酶B信号通路(PI3K/Akt信号通路)影响人胰腺癌细胞系(PANC-1)对吉西他滨化疗敏感性的分子机制。

方法

采用流式细胞术检测PI3K/Akt信号通路抑制剂LY294002联合吉西他滨对PANC-1细胞的凋亡影响;RNA干扰技术靶向沉默保罗样激酶1(Plk1)基因(shPlk1),检测Plk1下调后吉西他滨对PANC-1细胞的凋亡影响;LY294002处理PANC-1细胞,蛋白免疫印迹实验(Western blot法)检测磷酸化蛋白激酶B(p-Akt)及Plk1蛋白水平的变化;shPlk1处理PANC-1细胞,Western blot法检测Plk1及p-Akt蛋白水平的变化。采用GraphPad InStat3和SPSS 21.0统计软件分析。数据采用(

xˉ
±s)表示,行双侧t检验。以P<0.05为差异有统计学意义。

结果

LY294002可以促进PANC-1细胞对吉西他滨的化疗敏感性(P<0.01);下调Plk1可以明显增加PANC-1细胞对吉西他滨的化疗敏感性(P<0.01);与空白组(未作处理)相比,LY294002处理组p-Akt及Plk1蛋白表达水平均明显下降(P<0.01);与空白组相比,shPlk1处理组Plk1蛋白水平表达明显降低(P<0.01),而p-Akt蛋白水平改变不明显,差异无统计学意义(P>0.05)。

结论

PI3K/Akt信号通路与胰腺癌细胞的吉西他滨化疗敏感性密切相关,且抑制PI3K/Akt信号通路是通过下调Plk1蛋白而促进胰腺癌细胞的吉西他滨化疗敏感性。

Objective

To explore the molecular mechanism of phosphatidylinositol 3-kinase/protein kinase B signaling pathway(PI3K/Akt signaling pathway)affecting the sensitivity of human pancreatic cancer cell line(PANC-1)to gemcitabine chemotherapy.

Methods

Flow cytometry was used to detect the effect of PI3K/Akt signaling pathway inhibitor LY294002 combined with gemcitabine on PANC-1 cell apoptosis. RNA interference was used to silence Paul-like kinase 1(Plk1)gene(shPlk1),and flow cytometry was used to detect the effect of gemcitabine on PANC-1 cell apoptosis after Plk1 downregulation. PANC-1 cells were treated with LY294002,and the levels of phosphorylated protein kinase B(p-Akt)and Plk1 were detected by Western blot assay. PANC-1 cells were treated with shPlk1 and the protein levels of Plk1 and p-Akt were detected by Western blot. The statistical software of GraphPad InStat3 and SPSS21.0 was used for analysis. Data were expressed as(

xˉ
±s),and bilateral t test was used. P<0.05 was considered to be statistically significant.

Results

LY294002 could promote the sensitivity of PANC-1 cells to gemcitabine(P<0.01). Down-regulating Plk1 significantly increased the sensitivity of PANC-1 cells to gemcitabine(P<0.01). Compared with blank group(no treatment),the protein expression levels of P-Akt and Plk1 in LY294002 treatment group were significantly decreased(P<0.01). Compared with blank group,the protein level of Plk1 in shPlk1 treatment group was significantly decreased(P<0.01),while the protein level of P-Akt in ShPLK1 treatment group was not significantly changed(>0.05).

Conclusion

PI3K/Akt signaling pathway is closely related to gemcitabine chemotherapy sensitivity of pancreatic cancer cells,and inhibition of PI3K/Akt signaling pathway promotes gemcitabine chemotherapy sensitivity of pancreatic cancer cells by down-regulating Plk1 protein.

表1 抑制PI3K/Akt信号通路对胰腺癌细胞吉西他滨化疗敏感性的影响(
xˉ
±s)
表2 下调Plk1对胰腺癌细胞吉西他滨化疗敏感性的影响(
xˉ
±s)
表3 抑制PI3K/Akt信号通路对p-Akt及Plk1蛋白水平的影响(
xˉ
±s)
图1 抑制PI3K/Akt信号通路对胰腺癌细胞p-Akt及Plk1蛋白水平的影响
表4 下调Plk1对Plk1及p-Akt蛋白水平的影响(
xˉ
±s)
图2 下调Plk1对胰腺癌细胞p-Akt及Plk1蛋白水平的影响
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