cytochalasin b

Cytochalasin B is a mycotoxin binding to the barbed end of actin filaments. It can disrupt the formation of actin polymers (Kd: 1.4-2.2 nM for F-actin).

Dihydrocytochalasin B (H2CB) is a cell division inhibitor that prevents cytokinesis, alters cell morphology, disrupts actin structures in Swiss/3T3 mouse fibroblasts, and inhibits DNA synthesis induced by serum growth factors in quiescent cultures. Low doses of H2CB lead to cell rounding and the loss of actin microfilament bundles.

Cytochalasin A, a cell-permeable fungal toxin and oxidized derivative of cytochalasin B, is an inhibitor of HIV-1 protease (IC50 = 3 μM). It inhibits actin polymerization, interferes with microtubule assembly by reacting with sulfhydryl groups, and serves as an antibiotic and bactericidal active agent.

1-Oleoyl-2-palmitoyl-rac-glycerol (1,2-OP) is a diacylglycerol containing oleic acid at the sn-1 position and palmitic acid at the sn-2 position. It enhances the inhibition of superoxide anion production by cytochalasin B when used at a concentration of 10 μM. The concentration of 1,2-OP decreases from 25.7 to 11.15% during the dry-curing process of Iberian ham.

Sydowinin B is a xanthone polyketide that has been found inA. sydowiiand has immunosuppressant activity.1It inhibits LPS- or concanavalin A-induced proliferation of isolated mouse splenic lymphocytes (IC50s = 19.2 and 20.8 μg/ml, respectively).2Sydowinin B inhibits superoxide generation in, and elastase release from, isolated human neutrophils induced by cytochalasin B and N-Formyl-Met-Leu-Phe with IC50values of 21.2 and 12.62 μM, respectively.3

L-858,051 is a water-soluble analog of forskolin , a cell-permeant activator of adenylate cyclase. L-858,051 activates adenylate cyclase (EC50 = 3 μM), inhibits glucose transport, and blocks cytochalasin B binding in rat adipocyte membranes. L-858,051 is used to activate adenylate cyclase and initiate signaling through elevated cAMP synthesis in a variety of cell types in culture.

Evofolin B is a natural compound isolated from the stem bark of Zanthoxylum ailanthoides. Evofolin B has an inhibitory effect on the superoxide anion produced by human neutrophils in response to formyl-L-methionine-L-leucine-L-phenylalanine/cytochalasin B (fMLP/CB).

2'-Hydroxydaidzein is an isoflavonoid phytonutrient found in plant species, when a natural compound. 2'-Hydroxydaidzein has antioxidant activity, driven mainly by o-hydrogen bond dissociation enthalpy (BDE) and hydrogen atom transfer (HAT) mechanisms. 2'-Hydroxydaidzein inhibits chemical mediators in inflammatory cells and may be of value in the treatment and prevention of inflammatory diseases associated with excessive chemical mediator production. It may have a role in the treatment and prevention of central and peripheral inflammatory diseases associated with excessive chemical mediator production. 2'-Hydroxydaidzein inhibited the release of neutrophils and formyl-Met-Leu-Phe/cytochalasin B (fMLP/CB) in rats, with IC(50) values of 2.8+/-0.1 and 5.9+/-1.4 microM, respectively.

3'-O-Methylmurraol may have potential anti-inflammatory activity, it exhibits inhibition (IC50 ≤ 7.31 ug/mL) of superoxide anion generation by human neutrophils in response to formyl-l-methionyl-l-leucyl-l-phenylalanine/cytochalasin B (fMLP/CB).