Carcinogenesis, Teratogenesis & Mutagenesis ›› 2024, Vol. 36 ›› Issue (5): 384-390.doi: 10.3969/j.issn.1004-616x.2024.05.008

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Effects of CDK4/6 inhibitor abemaciclib and cisplatin on biological behavior of human gastric cancer cells

DI Rongwei1, FU Xinya1, MA Xiumei1,2, LI Chao3, HAI Ling1,2   

  1. 1. Department of Pathology, School of Basic Medical Sciences of Inner Mongolia Medical College, Hohhot 010059;
    2. Department of Pathology, The Affiliated Hospital of Inner Mongolia Medical College, Hohhot 010059;
    3. Department of Medical Oncology, The Affiliated Hospital of Inner Mongolia Medical College, Hohhot 010059, Inner Mongolia, China
  • Received:2023-12-01 Revised:2024-02-23 Published:2024-10-15

Abstract: OBJECTIVE: To investigate biological behavior of human gastric cancer cells after their treatment with the CDK4 and CDK6 (CDK4/6) inhibitor abemaciclib,and cisplatin. METHODS: The TCGA database resources and the bioinformatics UALCAN website were used to obtain the expression of CDK4/6 genes in gastric cancers and normal gastric tissues. Western blot test was used to detect expression of CDK4 and CDK6 albumen in the stomach-carcinoma cell line SGC7901 and the regular gastric mucous membrane cell line GES-1. The CCK-8 method was used to screen for the optimal cell growth inhibition concentration. The cells were divided into several groups:blank control,0.5 μg/mL cisplatin,10 μmol/L abemaciclib+0.5 μg/mL cisplatin,and 10 μmol/L abemaciclib groups. These groups were treated for 24,48 and 72 h. Then CCK-8 method,flow cytometry,scratch assay and Transwell assay were used to detect the proliferation,apoptosis,migration and invasion gastric cancer cells SGC-7901 in each subgroup RESULTS: Based on bioinformatics analysis, expression of CDK4/6 proteins in human gastric cancer tissues was significantly higher than that in normal gastric tissues (P<0.05). Western blot analyses showed that expression of CDK4/6 proteins was significantly increased in SGC7901 compared with that in normal tissues (P<0.05). According to the CCK-8 results,the cisplatin concentration for the IC50 value was 0.5 μg/mL and the abemaciclib was 10 μmol/L,therefore these concentrations were used for subsequent experiments. Compared with the blank control group,the combined treatment inhibited cell proliferation significantly (P<0.01),and the inhibition ability was time-dependent(r=0.949,P<0.01). The level of apoptosis was significantly increased (P<0.01),and both migration and invasion capacity were significantly reduced (P<0.01). CONCLUSION: Expression of CDK4/6 was significantly increased in human gastric cancer tissues and cells. Combined treatment of these cells with abemaciclib and cisplatin showed synergistic effects,which significantly inhibited the proliferation,migration,invasion of human gastric cancer cells and promoted apoptosis.

Key words: CDK4/6, gastric cancer, abemaciclib, cisplatin, biological behavior

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