Reversal effects of traditional Chinese herbs on multidrug resistance in cancer cells

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Lei Yang1, Dan-Dan Wei, Zhong Chen

  • 1Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, People's Republic of China.

Natural Product Research
|August 19, 2011
PubMed

Insights

Certain traditional Chinese medicinal herbs can overcome multidrug resistance (MDR) in cancer cells. Extracts from five herbs, including Curcuma wenyujin, significantly resensitized resistant cancer cells to chemotherapy agents.

Area of Science:

  • Pharmacology
  • Oncology
  • Traditional Chinese Medicine

Background:

  • Multidrug resistance (MDR) significantly limits the efficacy of chemotherapy in cancer treatment.
  • Identifying novel strategies to overcome MDR is crucial for improving patient outcomes.

Purpose of the Study:

  • To evaluate the potential of traditional Chinese medicinal herbs to reverse MDR in cancer cells.
  • To identify specific herbs and extract types that can restore sensitivity to antineoplastic agents.

Main Methods:

  • Screening of fractions from 17 traditional Chinese medicinal herbs against MCF-7/ADR and A549/Taxol resistant cancer cell lines.
  • Assessing cellular sensitivity using the MTT assay and measuring doxorubicin accumulation.
  • Comparing the efficacy of different extraction fractions (CH₂Cl₂ vs. EtOAc) and herb categories (PB vs. CH groups).

Main Results:

  • Fractions from herbs promoting blood circulation and removing stasis (PB group) were more effective than those clearing heat and toxins (CH group).
  • Dichloromethane (CH₂Cl₂) extracts demonstrated higher efficacy than ethyl acetate (EtOAc) extracts.
  • Five herbs, including Curcuma wenyujin, sensitized resistant cancer cells at non-toxic concentrations and increased doxorubicin accumulation.

Conclusions:

  • Specific traditional Chinese medicinal herbs possess compounds that can overcome MDR in cancer.
  • Curcuma wenyujin, Chrysanthemum indicum, Salvia chinensis, Ligusticum chuanxiong, and Cassia tora show promise in resensitizing cancer cells.
  • Further research into the active components and mechanisms of these herbs is warranted for developing new MDR reversal strategies.

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