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第41卷第8期                           南京医科大学学报(自然科学版)
                  2021年8月                   Journal of Nanjing Medical University(Natural Sciences)     ·1121 ·


               ·基础医学·

                帕博西尼和厄洛替尼联合治疗结直肠癌的协同作用及其机制



                周小晖,贡叶清,刘晓蓉,林 凡             *
                南京医科大学细胞生物学系,江苏 南京               211166




               [摘   要] 目的:评估帕博西尼(Palbociclib)单独或联合表皮生长因子缀体抑制剂厄洛替尼(Erlotinib)治疗结直肠癌(colorec⁃
                tal cancer,CRC)的有效性。方法:采用Alamar blue法和克隆形成实验检测帕博西尼单独或联合厄洛替尼对CRC细胞系增殖的
                影响;采用DNA含量定量法检测细胞周期分布变化;分别通过β⁃半乳糖苷酶和DCFH⁃DA染色检测细胞衰老和活性氧积累的
                情况;通过Western blot分析相关蛋白表达水平;在CRC患者来源异种移植模型中检测联合治疗的效果。结果:帕博西尼单独
                治疗有效抑制CRC细胞增殖,诱导细胞G1期阻滞、细胞衰老和胞内活性氧积累。帕博西尼和厄洛替尼联合治疗CRC具有协
                同作用,厄洛替尼进一步增强帕博西尼对CRC的多种抑制效应和多信号通路抑制,在CRC患者来源的异种移植模型中显示出
                了良好的协同抑制作用。结论:帕博西尼联合厄洛替尼在体外和体内能够协同抑制结直肠癌的生长。
               [关键词] 结直肠癌;帕博西尼;厄洛替尼;异种移植模型

               [中图分类号] R735.37                   [文献标志码] A                     [文章编号] 1007⁃4368(2021)08⁃1121⁃07
                doi:10.7655/NYDXBNS20210803



                Combination of palbociclib and erlotinib exhibits synergistic antitumor effect in colorectal
                cancer

                                                              *
                ZHOU Xiaohui,GONG Yeqing,LIU Xiaorong,LIN Fan
                Department of Cell Biology,Nanjing Medical University,Nanjing 211166


               [Abstract] Objective:This stndy aims to evaluate the efficacy of palbociclib alone or in combination with the epidermal growth
                factor receptor inhibitor erlotinib in the treatment of colorectal cancer(CRC). Methods:Alamar bule method and clone formation assay
                were used to detect the effects of palbociclib alone or in combination with erlotinib on the proliferation of CRC cell lines. Cell cycle
                distribution was determined by DNA content. Cell senescence and reactive oxygen species(ROS)accumulation were detected by β⁃
                galactosidase and DCFH ⁃ DA staining. The expression levels of related proteins were analyzed by Western blot and their clinical
                efficacies were evaluated in CRC patient⁃derived xenograft models. Results:Palbociclib inhibits CRC cell proliferation,induce G1 cell
                arrest,cell senescence and intracellular ROS accumulation effectively. Combination of palbociclib and erlotinib exhibits synergistic
                effects on CRC,and erlotinib further enhances the multiple inhibitory effects and multi⁃signaling pathway inhibition of palbociclib on
                CRC. Synergistic inhibition was also shown in CRC patient⁃derived xenograft models. Conclusion:Palbociclib combined with erlotinib
                synergistically inhibits the growth activity of colorectal cancer in vitro and in vivo.
               [Key words] colorectal cancer;palbociclib;erlotinib;patient⁃derived xenograft
                                                                            [J Nanjing Med Univ,2021,41(08):1121⁃1127]





                                                                                            [1]
                    结直肠癌(colorectal cancer,CRC)是世界上癌              效有限,5 年生存率仅为 12% 。结直肠癌是一种
                症死亡的主要原因,每年确诊的结直肠癌新发病例                            高度异质性的癌症类型,这意味着基因突变、表观
                约184万例,且大部分确诊病例发现于晚期,姑息治                          遗传调控和肿瘤微环境复杂性的增加,对结直肠
                疗是晚期转移性结直肠癌的主要治疗方法,总体疗                            癌的靶向治疗构成了严峻挑战               [2-3] 。因此,有效且

               [基金项目] 国家自然科学基金(81672962)                          多功能的结直肠癌靶向治疗亟待开发。
                ∗                                                     近年来,CDK4/6抑制剂为细胞周期靶向治疗开
                通信作者(Corresponding author),E⁃mail:linfan@njmu.edu.cn
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