The in vivo Therapeutic Effect of Free Wanderer Powder ( xiāo yáo sn, Xiaoyaosan) on Mice with 4T1 Cell Induced Breast Cancer Model

Wen Fang Chen, Li Xu, Chung Him Yu, Chui Kwan Ho, Ka Wu, Gina Leung, Man Sau Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


In the present study, we investigated the therapeutic effect of a classical TCM formula, Free Wanderer Powder ( xiāo yáo sn), in a breast cancer mouse model induced with estrogen-insensitive breast cancer 4T1 cells. Ovariectomized Balb/c mice (6-8 weeks) or sham mice were injected into the fourth mammary fat pad with 4T1 cells in which tumors were palpable 7 days after injection. On the eighth day, the mice were divided into 4 groups and tubefed daily with vehicle, Free Wanderer Powder ( xiāo yáo sn) formula or tamoxifen for 28 days. Tumor growth inhibition and the decrease of the average tumor mass were most evident in mice treated with Free Wanderer Powder ( xiāo yáo sn). Free Wanderer Powder ( xiāo yáo sn) treatment significantly reduced Bcl-2 and elevated Bax and p53 protein expressions in breast cancer tumor. These results were further confirmed by immunohistochemisty. Tamoxifen could decrease spleen mass and Bcl-2 protein expression, increase the Bax protein expression as well as exert uterotrophic effects by increasing uterus index and inducing the gene expressions in the uterus. Taken together, these results show that Free Wanderer Powder ( xiāo yáo sn) treatment induced apoptosis at protein level and inhibited the tumor growth in 4T1-induced ovariectomized Balb/c female mice, indicating the possibility of its future use for treatment of estrogen-insensitive breast caner.
Original languageEnglish
Pages (from-to)67-75
Number of pages9
JournalJournal of Traditional and Complementary Medicine
Issue number1
Publication statusPublished - 1 Jan 2012


  • Free Wanderer Powder ( xiāo yáo sn
  • Xiaoyaosan); 4T1 cells; Breast cancer; Balb/c mice

ASJC Scopus subject areas

  • Complementary and alternative medicine

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