Oral administration of an Enoki mushroom protein FVE activates innate and adaptive immunity and induces anti-tumor activity against murine hepatocellular carcinoma.

Journal Article (Journal Article)

FVE is a documented immunomodulatory protein purified from Enoki mushroom (Flammulina velutipes) and known as an activator for human T lymphocytes. This present study was aimed to investigate the anti-tumor effect and the related mechanisms of oral administration of FVE using a murine hepatoma model. Oral administration of FVE (10mg/kg) significantly increased the life span and inhibited the tumor size of BNL 1MEA.7R.1 (BNL) hepatoma-bearing mice. Tumor-bearing mice receiving oral FVE treatment had the highest tumoricidal capacity of peritoneal macrophages and tumor-specific splenocytes against BNL hepatoma cells. In addition, in vivo neutralization of interferon-gamma (IFN-gamma) demonstrated a significant decrease of FVE-induced anti-tumor effect (P<0.05). The expression levels of major histocompatibility complex (MHC) class I and II molecules and costimulatory molecule CD80 on peripheral blood mononuclear cells obtained from the FVE-treated mice were upregulated as compared with those of the PBS-treated mice. Furthermore, immunohistochemical staining showed a strong inhibition of tumor growth and angiogenesis in hepatoma tissues after oral administration of FVE. Taken together, oral administration of FVE displayed anti-tumor activity through activating both innate and adaptive immunity of the host to prime a cytotoxic immune response and IFN-gamma played a key role in the anti-tumor efficacy of FVE.

Full Text

Duke Authors

Cited Authors

  • Chang, H-H; Hsieh, K-Y; Yeh, C-H; Tu, Y-P; Sheu, F

Published Date

  • February 2010

Published In

Volume / Issue

  • 10 / 2

Start / End Page

  • 239 - 246

PubMed ID

  • 19909827

Electronic International Standard Serial Number (EISSN)

  • 1878-1705

International Standard Serial Number (ISSN)

  • 1567-5769

Digital Object Identifier (DOI)

  • 10.1016/j.intimp.2009.10.017

Language

  • eng