Inhibition of lung cancer growth by HangAmDan-B is mediated by macrophage activation to M1 subtype

Abstract

Re-education of tumor-associated macrophages (TAMs) toward antitumor effectors may be a promising therapeutic strategy for the successful treatment of cancer. HangAmDan-B (HAD-B), a herbal formula, has been used for stimulating immune function and activation of vital energy to cancer patients in traditional Korean Medicine. Previous studies have reported the anti-angiogenic and anti-metastatic effects of HAD-B; however, evidence on the immunomodulatory action of HAD-B was not demonstrated. In the present study, immunocompetent mice were used to demonstrate the suppression of the in vivo growth of allograft Lewis lung carcinoma (LLC) cells, by HAD-B. In addition, HAD-B inhibited the in vitro growth of LLC cells by driving macrophages toward M1 polarization, but not through direct inhibition of tumor cell growth. Furthermore, culture media transfer of HAD-B-treated macrophages induced apoptosis of LLC cells. Results of the present study suggest that the antitumor effect of HAD-B may be explained by stimulating the antitumor function of macrophages. Considering the importance of re-educating TAMs in the regulation of the tumor microenvironment, the present study may confer another option for anti-cancer therapeutic strategy, using herbal medicines such as HAD-B.

DOI: 10.3892/ol.2017.5730

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Cite this paper

@inproceedings{Park2017InhibitionOL, title={Inhibition of lung cancer growth by HangAmDan-B is mediated by macrophage activation to M1 subtype}, author={Hye-Rin Park and Eun-Ji Lee and Seong-Cheol Moon and T Chung and Keuk-Jun Kim and Hwa-Seung Yoo and Chong-kwan Cho and Ki-Tae Ha}, booktitle={Oncology letters}, year={2017} }