For Patients & Caregivers

MGN-3 has not been shown to prevent cancer, HIV or any other medical condition.

MGN-3 is a complex sugar derived from rice bran treated with extracts from three mushrooms: Shiitake, Coriolus versicolor, and Suehirotake. The manufacturer claims that it stimulates several aspects of the immune system, causing an overall immune stimulation. Laboratory studies show that MGN-3 can cause cell death in some cancer cells and increase their susceptibility to chemo drugs. It may improve the response and reduce the side effects of standard therapies in liver cancer patients, but larger studies are needed to confirm these observations.

  • To treat cancer
    A clinical study shows MGN-3 may improve the response of standard therapies in liver cancer patients. However, there is no evidence that it can be used as a treatment alone.
  • To prevent and treat chemotherapy side effects
    MGN-3 reduced the side effects of standard therapies in liver cancer patients.
  • To stimulate the immune system
    MGN-3 has been shown to stimulate immune cells in laboratory studies and in small studies of cancer patients.
  • To treat chronic fatigue syndrome
    A clinical study did not find MGN-3 effective in treating chronic fatigue syndrome.
  • No side effects have been reported.
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For Healthcare Professionals

Biobran®, Lentin Plus 1000

MGN-3 is a proprietary product derived from rice bran treated with extracts from three mushrooms: shiitake (Lentinus edodes), kawaratake (Coriolus versicolor), and suehirotake (Schizophyllum commune). Promoters of MGN-3 claim that it improves immune function against cancer and AIDS.

Studies done in vitro and in animal models indicate that MGN-3 facilitates apoptosis of human T cell leukemia cells (6), sensitizes human breast cancer cells to chemotherapeutic agents (7) (10), and affords protection against weight loss induced by cisplatin (8) and radiation (11).

In small studies of cancer patients, MGN-3 increased overall response and reduced adverse effects of standard therapies (1) and improved immunomodulatory function (5) (12).

Rice, mushrooms

  • Cancer treatment
  • Chemotherapy side effects
  • HIV and AIDS
  • Immunostimulation

MGN-3 is an arabinoxylan from rice bran made using enzymes from mycelia of shiitake, kawaratake and suehirotake mushrooms. The bioactive constituents are thought to be polysaccharides, which modulate the levels of  tumor necrosis factor (TNF)-alpha and interferon (IFN)-gamma secretion, and augment natural killer (NK) cell function in vitro (3).

In rat models, MGN-3 exerted protective effects against D-galactosamine-induced liver injury by reducing expression of interleukin (IL-18) (13). It also protected against D-galactosamine-induced hepatitis by suppressing inhibition of NF-κB, JNK phosphorylation, and CD14 expression (14).

MGN-3 displayed synergistic effects with paclitaxel by causing DNA damage, enhancing apoptosis, and inhibiting cell proliferation in murine breast cancer cells (10). In another study, MGN-3 exerted antioxidative activity and protected against radiation-induced loss of body and organ weight in mice (11).

In a study of myeloma patients, MGN-3 increased NK cell activity, the number of myeloid dendritic cells in peripheral blood, and concentrations of T helper cell type 1-related cytokines (12).

None reported.

MGN-3 reduces alpha-fetoprotein (AFP) levels in hepatocellular carcinoma patients undergoing standard therapies (1).

  1. Ghoneum MH, Maeda H. Immunopotentiator and method of manufacturing the same (Arabinoxylane Compound). U.S. Patent #5560914. Filed July 12, 1995.

  2. Ghoneum M. Anti-HIV activity in vitro of MGN-3, an activated arabinoxylane from rice bran. Biochem Biophys Res Commun 1998;243:25.

  3. Ghoneum M. NK Immunomodulatory function in 27 cancer patients by MGN-3. Abstract, 87th Annual Meeting of the American Association for Cancer Research. April 20-24, 1996.

  4. Ghoneum M, Badr El-Din NK, Ali DA, El-Dein MA. Modified arabinoxylan from rice bran, MGN-3/biobran, sensitizes metastatic breast cancer cells to paclitaxel in vitro. Anticancer Res. 2014 Jan;34(1):81-7.

  5. Ghoneum M, Badr El-Din NK, Abdel Fattah SM, Tolentino L. Arabinoxylan rice bran (MGN-3/Biobran) provides protection against whole-body γ-irradiation in mice via restoration of hematopoietic tissues. J Radiat Res. 2013 May;54(3):419-29.

  6. Cholujova D, Jakubikova J, Czako B, et al. MGN-3 arabinoxylan rice bran modulates innate immunity in multiple myeloma patients. Cancer Immunol Immunother. 2013 Mar;62(3):437-45.

  7. Zheng S, Sanada H, Dohi H, Hirai S, Egashira Y. Suppressive effect of modified arabinoxylan from rice bran (MGN-3) on D-galactosamine-induced IL-18 expression and hepatitis in rats. Biosci Biotechnol Biochem. 2012;76(5):942-6.

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