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Cytochalasin B

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产品编号 T7097Cas号 14930-96-2
别名 细胞松弛素B, 细胞松弛素 B, Phomin

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).

Cytochalasin B

Cytochalasin B

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纯度: 98.79%
产品编号 T7097 别名 细胞松弛素B, 细胞松弛素 B, PhominCas号 14930-96-2

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).

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产品介绍

生物活性
产品描述
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).
靶点活性
F-actin (Mg2+/K+):1.4 nM (Kd), F-actin (Mg2+):2.2 nM (Kd)
体外活性
Cytochalasin B is a cell-permeable mycotoxin binding to the barbed end of actin filaments, inhibits the enlongation and shortening of actin filaments, with Kds of 2.2 nM and 1.4 nM for F-actin in the presence of MgCl2 (2 mM) or MgCl2 (2 mM) plus KCl, respectively [1]. Cytochalasin B (6 μM) increases the myofibrillar fragmentation index, which is attributed to the intensely breaking of myofibrillar proteins into short segments. Cytochalasin B also accelerates the disruption of actin filaments. In addition, Cytochalasin B accelerates the transformation from F-actin to G-actin, lowering the content of F-actin and significantly increasing G-actin bands during postmortem conditioning [2]. Cytochalasin B (0.1-10 μM) shows inhibitory effect on multiple murine cancer cell lines, with IC50s of 2.56 μM (M109c), 10.46 μM (B16BL6), 105.5 μM (P388/ADR), 51.9 μM (P388/S) and IC80s of 12.23 μM (M109c), 44.86 μM (B16BL6), 188.4 μM (P388/ADR), 84.1 μM (P388/S) after treatment for 3 h, with IC50s of 0.25 μM (M109c), 0.37 μM (B16F10), 0.87 μM (B16BL6), and IC80s of 0.75 μM (M109c), 1.21 μM (B16F10) after treatment for 4 days [3].
体内活性
Cytochalasin B (10, 25, 50 mg/kg, i.p.) dose-dependently increases the life expectancy of Balb/c mice bearing with P388/ADR leukemias. Cytochalasin B at 50 mg/kg produces 10 % long-term survival in the multidrug-resistant P388/ADR cohort, and 40 % long-term survival in the drug-sensitive P388/S cohort [3].
细胞实验
The attached cell lines M109c, B16BL6, and B16F10 are seeded at 1 to 4?×?10^4 cells/mL in 2 mL volumes in 24-well culture plates 1 day prior to treatment with Cytochalasin B. The suspension culture of P388/ADR cells is seeded at 5?×?10^4 cells/mL and allowed to grow overnight before Cytochalasin B treatment. Cells are treated with Cytochalasin B for 3 h, as well as 2, 3, or 4 days. In the case of continuous exposure for 2, 3, or 4 days, attached cells are trypsinized and counted with a hemacytometer. Leukemia cell suspensions are counted with a Coulter Counter. In the case of short-term exposure, cells are washed twice with fresh medium, then trypsinized (except for P388/ADR cells), reseeded, and allowed to regrow for 3 days, at which time they are counted. Growth results are calculated as the number of cells generated above the seeding density compared to the untreated control cells and graphically presented as a percent of control increase [3].
动物实验
For chemotherapy testing, Balb/c mice under isoflurane anesthesia are challenged with 2?×?10^5 trypan blue negative P388/S or P388/ADR cells subcutaneously (s.c.) in a volume of 200 μL. Untreated mice are kept in order to determine the lethality of the challenge without chemotherapeutic intervention. Long-term survival is defined as challenged mice that survive the duration of the observation period. Cytochalasins B and D are prepared in suspension form in 2 % carboxymethyl cellulose 1 % tween 20 (CMC/Tw) for intraperitoneal (i.p.) administration. The congeners or the vehicle are administered to leukemia-challenged mice on Days 1-8 following the initial challenge [2].
别名细胞松弛素B, 细胞松弛素 B, Phomin
化学信息
分子量479.61
分子式C29H37NO5
CAS No.14930-96-2
Smiles[H][C@]12[C@H](Cc3ccccc3)NC(=O)C11OC(=O)\C=C\[C@H](O)CCC[C@@H](C)C\C=C\[C@@]1([H])[C@H](O)C(=C)[C@H]2C
密度1.2 g/cm3
储存&溶解度
存储store at low temperature,keep away from direct sunlight | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice.
溶解度信息
Ethanol: 20 mg/mL (41.7 mM)
DMSO: 20 mg/mL (41.7 mM)
溶液配制表
1mg5mg10mg50mg
1 mM2.0850 mL10.4251 mL20.8503 mL104.2514 mL
5 mM0.4170 mL2.0850 mL4.1701 mL20.8503 mL
10 mM0.2085 mL1.0425 mL2.0850 mL10.4251 mL
20 mM0.1043 mL0.5213 mL1.0425 mL5.2126 mL

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TargetMol | Animal experiments比如您的给药剂量是 10 mg/kg ,每只动物体重 20 g ,给药体积 100 μLTargetMol | Animal experiments 一共给药动物 10 只 ,您使用的配方为 5% TargetMol | reagent DMSO+ 30%PEG300+ 5%Tween 80 + 60% ddH2O. 那么您的工作液浓度为 2 mg/mL
母液配置方法: 2 mg 药物溶于 50 μLDMSOTargetMol | reagent ( 母液浓度为 40 mg/mL ), 如您需要配置的浓度超过该产品的溶解度,请先与我们联系。
体内配方的制备方法:50μLDMSOTargetMol | reagent 母液,添加 300 μLPEG300TargetMol | reagent 混匀澄清,再加 50μLTween 80, 混匀澄清,再加 600μLddH2OTargetMol | reagent 混匀澄清

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