title: Effects of food lectins on the transport system of human intestinal Caco-2 cell monolayers.
abstract: The effects of 16 lectins isolated from foodstuff on the transport system across human intestinal Caco-2 cell monolayers were investigated by using four fluorescent markers: lucifer yellow (LY) for the paracellular pathway, fluorescein (FL) for the monocarboxylic acid transporter-mediated pathway, rhodamine 123 for the P-glycoprotein-mediated efflux pathway, and calcein for the multidrug resistance associated protein-related efflux pathway. The transepithelial electrical resistance (TER) values for the monolayers were also measured. WGA from wheat germ, ABA from white mushroom, AOL from Aspergillus oryzae, and CSL3 from chum salmon eggs (each at 100 µg/mL) decreased the TER value by 20-40% which resulted in increased LY transport. These lectins, as well as such other lectins as SBA from soybean, RBA from rice bran, and Con A from jack bean, affected other transport pathways too. These results indicate that the lectins modulated the transepithelial transport system in different ways, probably because of their specific binding characteristics toward Caco-2 cell monolayers.
authors.affiliation: Department of Biomolecular Sciences, Graduate School of Life Sciences, Tohoku University.
authors.forename: Shintaro
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Mai
authors.initials: M
authors.lastname: Tomiyama
authors.forename: Ryo
authors.initials: R
authors.lastname: Nemoto
authors.forename: Takako
authors.initials: T
authors.lastname: Naganuma
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Ogawa
authors.forename: Koji
authors.initials: K
authors.lastname: Muramoto
mesh_terms: D018938:Caco-2 Cells; D017097:Electric Impedance; D005456:Fluorescent Dyes / Q000378:metabolism; D005502:Food; D006801:Humans; D007408:Intestinal Absorption / Q000187:drug effects*; D007413:Intestinal Mucosa / Q000187:drug effects / Q000378:metabolism*; D007422:Intestines / Q000166:cytology / Q000187:drug effects*; D037102:Lectins / Q000494:pharmacology* / Q000633:toxicity
chemical_list: D005456:Fluorescent Dyes; D037102:Lectins