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1、Hotline: 400-820-3792Inhibitors Agonists Screening Librarieswww.MedChemELarazotide acetateCat. No.: HY-106268ACAS No.: 881851-50-9分式: CHNO分量: 785.89作靶點(diǎn): Gap Junction Protein作通路: Cytoskeleton儲(chǔ)存式: Powder -20C 3 yearsIn solvent -80C 6 months-20C 1 month溶解性數(shù)據(jù)體外實(shí)驗(yàn) H2O : 16.67 mg/mL (21.21 mM; Need ultras
2、onic)DMSO : 3.2 mg/mL (4.07 mM; Need ultrasonic and warming)Mass Solvent1 mg 5 mg 10 mg Concentration制備儲(chǔ)備液1 mM 1.2724 mL 6.3622 mL 12.7244 mL5 mM 0.2545 mL 1.2724 mL 2.5449 mL10 mM 0.1272 mL 0.6362 mL 1.2724 mL請(qǐng)根據(jù)產(chǎn)品在不同溶劑中的溶解度,選擇合適的溶劑配制儲(chǔ)備液,并請(qǐng)注意儲(chǔ)備液的保存式和期限。BIOLOGICAL ACTIVITY物活性 Larazotide acetate種合成肽,
3、 種緊密連接 (junction) 的調(diào)節(jié)劑。IC50 & Target Paracellular permeability 1體外研究Larazotide acetate inhibits the redistribution and rearrangement of zonula occludens-1 (ZO-1) and actincaused by AT-1002 and gliadin fragments in Caco-2 and IEC6 cells. Larazotide acetate inhibits the AT-1002-induced TEER reduction
4、and TJ opening in Caco-2 cells. Larazotide acetate inhibits the translocation of a1/2 Master of Small Molecules 您邊的抑制劑師www.MedChemEgliadin 13-mer peptide, which has been implicated in celiac disease, across Caco-2 cell monolayers. Further,apically applied Larazotide acetate inhibits the increase in
5、TJ permeability elicited by basolaterally appliedcytokines 1.體內(nèi)研究 When tested in vivo in gliadin-sensitized HLA-HCD4/DQ8 double transgenic mice, larazotide acetate inhibitsgliadin-induced macrophage accumulation in the intestine and preserved normal tight junction structure 1.PROTOCOLCell Assay 1 Ca
6、co-2 cells are seeded onto 12-well plate and grown for 2128 days until fully differentiated. The apical andbasolateral compartments of Caco-2 cell monolayers are pre-incubated in Hanks Balanced Salt Solution(HBSS) at 37C for 30 min. Treatment solutions containing 7.5 mM LY with or without AT-1002 (7
7、 mM) anddifferent concentrations of larazotide acetate (5, 10, 12.5, 15 mM) in HBSS are added to the apicalcompartment of each monolayer and incubated at 37C, 50 rpm for 180 min. At the end of the incubation,samples are removed from the basolateral compartment and analyzed in a fluorescence plate re
8、ader atexcitation and emission wavelengths of 485 nm and 535 nm, respectively. The increase in LY passage iscalculated for each treatment and is expressed relative to that of untreated controls 1.MCE has not independently confirmed the accuracy of these methods. They are for reference only.Animal Mi
9、ce 1Administration 1 Cohorts of HLA-HCD4/DQ8 mice (n=10 each) are sensitized (i.p.) with 500 g of gliadin dissolved in 0.02 mMacetic acid in 50 g of Complete FreundsAdjuvant; thereafter, mice are gavaged with gliadin (2 mg/mouse),+/ treatment, 2/week for 7 weeks. Group 1 receives larazotide acetate
10、(250 g/mouse) and gliadin, Group2 receives AT-1002 (250 g/mouse) and gliadin, and Group 3 is gavaged with gliadin only. A group of non-sensitized controls (CFA, i.p. only) is gavaged with rice. Twenty-four hours after the last gavage, smallintestinal tissue is mounted in Ussing chambers for the meas
11、urement of electrical parameters (Isc,conductance) and macromolecule transport (horseradish peroxidase HRP flux). Tissue is processed formacrophage counts by immunohistochemistry using F4/80 antibody specific for a macrophage-restricted cellsurface glycoprotein 1.MCE has not independently confirmed the accuracy of these methods. They are for reference only.REFERENCES1. Gopalakrishnan S, et al. Larazotide acetate regulates epithelial tight junctions in vitro and in vivo. Peptides. 2012 May;35(1):86-94.McePdfHeightCaution: Produc
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