Abstract:
:AndoSan™ is an extract of Agaricus blazei Murill (AbM; 82.4%), Hericium erinaceum (14.7%), and Grifola frondosa (2.9%). The main ingredient of AndoSan, AbM, is rich in different forms of β-glucans. Since these exhibit potent antitumor activity and have immunomodulatory effects, the stimulatory effect of AndoSan on the production of different cytokines, chemokines, and leukocyte growth factors has predominantly been attributed to β-glucans. AndoSan has been claimed to consist of 90% carbohydrate, of which 2.8% is β-glucans, but in this study, we show that the carbohydrate content is only 2% of the dry weight, corresponding to 0.09% β-glucan per mL of AndoSan. Fractionation of AndoSan, followed by carbohydrate analysis and HPLC analysis revealed that most of the glucose was concentrated in the polar high molecular weight fraction of AndoSan (ethanol insoluble water extract [EIWE]-A) and that this extract was able to significantly inhibit the activity of the tumor-associated protease, legumain, in RAW 264.7 cells. Legumain is synthesized as a zymogen and undergoes pH-dependent autoactivation of the proform to reach an enzymatically active form. In this study, we demonstrate that both the polar and nonpolar AndoSan fractions are able to inhibit the autoactivation of prolegumain, and that the polar fractions of AndoSan are the most potent inhibitors of the active form of the enzyme.
journal_name
J Med Foodjournal_title
Journal of medicinal foodauthors
Berven L,Karppinen P,Hetland G,Samuelsen ABdoi
10.1089/jmf.2014.0018subject
Has Abstractpub_date
2015-04-01 00:00:00pages
429-38issue
4eissn
1096-620Xissn
1557-7600journal_volume
18pub_type
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