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Evidence-Based Complementary and Alternative Medicine
Volume 2015 (2015), Article ID 835263, 8 pages
http://dx.doi.org/10.1155/2015/835263
Research Article

Immunomodulatory Effects of Cinobufagin on Murine Lymphocytes and Macrophages

Liaoning Medical University, Jinzhou 121001, China

Received 17 July 2015; Revised 25 September 2015; Accepted 30 September 2015

Academic Editor: Caigan Du

Copyright © 2015 Yang Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cinobufagin (CBG), a major bioactive component of the traditional Chinese medicine ChanSu, has been reported to have potent pharmacological activity. In this study, we aimed to elucidate the effects of CBG on the activity of immune cells in mice. Peritoneal macrophages and splenocytes from mice were prepared and cultured in RPMI1640 supplemented with 10% fetal bovine serum. Concanavalin (ConA), lipopolysaccharide (LPS), and CBG (0.0125, 0.05, 0.15, or 0.25 μg/mL) were added to the culture medium, and the phagocytic activity of macrophages was detected by MTT assays. Additionally, lymphocyte secretion of interleukin- (IL-)2 and IL-10 was detected by enzyme-linked immunosorbent assay, and the cell cycle distribution and cell surface markers were detected by flow cytometry. Our results demonstrated that CBG promoted lymphocyte proliferation; this effect was suppressed by combined treatment with ConA or LPS. Moreover, CBG also significantly improved the CD4+/CD8+ ratio in spleen lymphocytes and increased the percentage of spleen lymphocytes in the S phase. Finally, we found that CBG enhanced the secretion of IL-2 and IL-10 and increased the phagocytosis ability of macrophages. In summary, CBG could enhance activity of immune cells.