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CD155 downregulation synergizes with adriamycin to induce breast cancer cell apoptosis

Jian Gao1,2, Qianqian Zheng1, Yue Shao1

  • 1Department of Pathophysiology, College of Basic Medical Science, China Medical University, Shenyang, China.

Apoptosis : an International Journal on Programmed Cell Death
|July 25, 2018
PubMed

Insights

Downregulating CD155 enhances Adriamycin chemotherapy effectiveness against breast cancer. Combining CD155 knockdown with Adriamycin boosts cancer cell death and suppresses tumor growth, suggesting a new therapeutic strategy.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • CD155 plays a role in cancer cell migration, invasion, proliferation, and apoptosis.
  • CD155 expression is induced by DNA damage from chemotherapy or reactive oxygen species.
  • Adriamycin (Adr) is a common chemotherapeutic agent for breast cancer.

Purpose of the Study:

  • To investigate the effect of Adriamycin on CD155 expression in breast cancer cells.
  • To evaluate the combined effect of CD155 knockdown and Adriamycin on breast cancer cell apoptosis and tumor growth.
  • To explore CD155's role in Adriamycin resistance.

Main Methods:

  • Treatment of in vitro cultured breast cancer cells and 4T1 xenografts with Adriamycin.
  • CD155 knockdown using specific techniques.
  • Assessment of apoptosis induction and tumor growth suppression.
  • Analysis of CD155 expression levels.

Main Results:

  • Adriamycin treatment upregulated CD155 expression in breast cancer cells and xenografts.
  • Both CD155 knockdown and Adriamycin induced apoptosis; their combination resulted in greater cell death.
  • Combined CD155 knockdown and Adriamycin significantly suppressed tumor growth compared to monotherapy.
  • CD155 upregulation may contribute to Adriamycin resistance in breast cancer cells.

Conclusions:

  • CD155 downregulation synergizes with Adriamycin to enhance breast cancer cell apoptosis and inhibit tumor growth.
  • Targeting CD155 in combination with Adriamycin presents a promising therapeutic strategy for breast cancer.
  • CD155 upregulation could be a mechanism of resistance to Adriamycin in breast cancer.
Keywords:
AdriamycinApoptosisBreast cancerCD155

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