RT Journal Article ID 18a80e4444b3833e A1 Yap, Ann-Teck A1 Ng, Mah-Lee T1 Immunopotentiating Properties of Lentinan (1®3)-b-D-glucan Extracted from Culinary–Medicinal Shiitake Mushroom Lentinus edodes (Berk.) Singer (Agaric JF International Journal of Medicinal Mushrooms JO IJM YR 2003 FD 2003-12-01 VO 5 IS 4 OP 20 AB The immunopotentiating efficacy of lentinan, a fully purified (1®3)-b-D-glucan extracted from culinary–medicinal mushroom Lentinus edodes (Berk.) Singer was investigated both in vitro and in vivo. The oral administration of lentinan to AKR mice exerted strong antitumor activity, resulting in raised levels of lymphocytokines such as IFN-g, TNF-a, IL-2, and IL-1a. Tissue cultures of murine macrophages CRL-2019, B-lymphocytes HB-284, and T-lymphocytes CRL-8179, which were treated with lentinan, showed high levels of activation using flow cytometry. Activated immunocytes, particularly the T-helper cells by lentinan, might render the physiological constitutions of the host highly cancer and infection resistant. Adoptive immunotherapy of the immunodeficient mice such as the nude (athymic) mice, B-cell deficient mice, and SCID (severe combined immunodeficient) mice via the transfer of the lentinan-activated immunocytes resulted in the inhibition of tumor growth. Lentinan appeared to represent a unique class of host defense potentiators (HDP), protecting the hosts from the side effects of conventional therapeutic measures and improving various kinds of immunological parameters with no toxic side-effects in animal models. PB Begell House LK https://www.dl.begellhouse.com/journals/708ae68d64b17c52,40f85691198060b9,18a80e4444b3833e.html