Basic & Clinical Medicine ›› 2023, Vol. 43 ›› Issue (4): 603-607.doi: 10.16352/j.issn.1001-6325.2023.04.0603

• Original Articles • Previous Articles     Next Articles

Platycodon grandiflorum saponin D enhances the sensitivity of human rectal cancer cell strain SW1463/Oxa with drug resistance to oxaliplatin

YAN Jun1, FENG Yong'an2, SHI Yongkui1, ZHAO Zhihao1, NI Huailiang1, YANG Weizhen1*   

  1. 1. Department of General Surgery, Baoji Central Hospital, Baoji 721008;
    2. Department of Hepatobiliary Pancreatic Splenic Surgery, Baoji Hospital, Xi'an Medical College, Baoji 721006, China
  • Received:2022-03-16 Revised:2022-10-25 Online:2023-04-05 Published:2023-04-03
  • Contact: *

Abstract: Objective To investigate the enhancing effect of platycodon grandiflorum saponin D on the sensitivity of human rectal cancer drug-resistant cell line SW1463 to oxaliplatin (Oxa). Methods Human rectal cancer cell line SW1463 was collected to establish a stable oxaliplatin-resistant cell strain SW1463/Oxa. The constructed cell strain SW1463/Oxa was randomly divided into platycodon grandiflorum saponin D group, Oxa group, platycodon saponin D+Oxa group and control group. The cell proliferation curve was detected by MTT. Deoxyribonucleic acid methyltransferase 3a (DNMT3a), phosphorylated histone γ-H2AX, DNA double strand repair protein RAD51 and signal transducer and activator of transcription 3(STAT3) messenger RNA (mRNA) expression were detected by RT-qPCR. DNMT3a, γ-H2AX, RAD51, STAT3 protein expression and phosphorylated STAT3(p-STAT3) level were detected by Western blot. Results Human rectal cancer drug resistant cell strain SW1463/Oxa was successfully constructed. Compared with the control group and Oxa group, the cell proliferation, DNMT3a, RAD51, STAT3 mRNA and protein expression and p-STAT3 level of platycodon saponin D group and platycodon saponin D+Oxa group decreased(P<0.05), and the expression of γ-H2AX mRNA and protein increased(P<0.05). Conclusions Platycodon grandiflorum saponin D may enhance the chemo-sensitivity of human rectal cancer drug-resistant cell strain SW1463/Oxa to Oxa, and the potential mechanism is inhibition of expression of DNMT3a, RAD51, STAT3 and promotion of expression of γ-H2AX.

Key words: platycodon grandiflorum saponin D, deoxyribonucleic acid methyltransferase 3a, rectal cancer, susceptibility

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