title: Bowman-Birk inhibitors from legumes as colorectal chemopreventive agents.
abstract: Aberrant functioning of serine proteases in inflammatory and carcinogenic processes within the gastrointestinal tract (GIT) has prompted scientists to investigate the potential of serine protease inhibitors, both natural and synthetic, as modulators of their proteolytic activities. Protease inhibitors of the Bowman-Birk type, a major protease inhibitor family in legume seeds, which inhibit potently and specifically trypsin- and chymotrypsin-like proteases, are currently being investigated as colorectal chemopreventive agents. Physiologically relevant amounts of Bowman-Birk inhibitors (BBI) can reach the large intestine in active form due to their extraordinary resistance to extreme conditions within the GIT. Studies in animal models have proven that dietary BBI from several legume sources, including soybean, pea, lentil and chickpea, can prevent or suppress carcinogenic and inflammatory processes within the GIT. Although the therapeutic targets and the action mechanism of BBI have not yet been elucidated, the emerging evidence suggests that BBI exert their preventive properties via protease inhibition; in this sense, serine proteases should be considered as primary targets in early stages of carcinogenesis. The validation of candidate serine proteases as therapeutic targets together with the identification, within the wide array of natural BBI variants, of the most potent and specific protease inhibitors, are necessary to better understand the potential of this protein family as colorectal chemopreventive agents.
authors.affiliation: Alfonso Clemente, Maria del Carmen Arques, Department of Physiology and Biochemistry of Nutrition, Estación Experimental del Zaidín (CSIC), 18008 Granada, Spain.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Clemente
authors.affiliation: Alfonso Clemente, Maria del Carmen Arques, Department of Physiology and Biochemistry of Nutrition, Estación Experimental del Zaidín (CSIC), 18008 Granada, Spain.
authors.forename: Maria del Carmen
authors.initials: Mdel C
authors.lastname: Arques
mesh_terms: D000818:Animals; D016588:Anticarcinogenic Agents / Q000302:isolation & purification / Q000627:therapeutic use*; D015179:Colorectal Neoplasms / Q000201:enzymology / Q000517:prevention & control*; D015195:Drug Design; D007887:Fabaceae / Q000737:chemistry; D006801:Humans; D058990:Molecular Targeted Therapy; D008517:Phytotherapy; D010946:Plants, Medicinal; D057057:Serine Proteases / Q000378:metabolism; D015842:Serine Proteinase Inhibitors / Q000302:isolation & purification / Q000627:therapeutic use*; D014358:Trypsin Inhibitor, Bowman-Birk Soybean / Q000302:isolation & purification / Q000627:therapeutic use*
chemical_list: D016588:Anticarcinogenic Agents; D015842:Serine Proteinase Inhibitors; D014358:Trypsin Inhibitor, Bowman-Birk Soybean; D057057:Serine Proteases
keywords: Bowman-Birk inhibitors; Cell proliferation; Chemoprevention; Colorectal cancer; Legumes; Serine proteases