CAS號	14930-96-2	產地	國產
規(guī)格	1mg	級別	化工級
證書	ISO系列證書

Cytochalasin B (Synonyms: 細胞松弛素B; Phomin)

生物活性

Cytochalasin B is a cell-permeable mycotoxin binding to the barbed end of actin filaments, disrupting the formation of actin polymers, with K_d value of 1.4-2.2 nM for F-actin.

IC₅₀ & Target

Kd: 2.2 nM (F-actin, with Mg²⁺), 1.4 nM (F-actin, with Mg²⁺/K⁺)

體外研究(In Vitro)

Cytochalasin B is a cell-permeable mycotoxin binding to the barbed end of actin filaments, inhibits the enlongation and shortening of actin filaments, with K_ds 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 (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), 10.41 μM (B16BL6) after treatment for 4 days^[2]. Cytochalasin B (6 μM) increases the myofibrillar fragmentation index (MFI), 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

體內研究(In Vivo)

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

分子量：479.61

Formula：C₂₉H₃₇NO₅

CAS 號：14930-96-2

中文名稱：細胞松弛素B；松胞菌素B

運輸條件：Room temperature in continental US; may vary elsewhere.

儲存方式：

Powder	-20°C	3 years
In solvent	-80°C	6 months
	-20°C	1 month

溶解性數據

DMSO : 83.33 mg/mL (173.75 mM; ultrasonic and warming and heat to 60°C)

Ethanol : 25 mg/mL (52.13 mM; Need ultrasonic)

配制儲備液

濃度溶劑體積質量	1 mg	5 mg	10 mg

1 mM	2.0850 mL	10.4251 mL	20.8503 mL
5 mM	0.4170 mL	2.0850 mL	4.1701 mL
10 mM	0.2085 mL	1.0425 mL	2.0850 mL

請根據產品在不同溶劑中的溶解度選擇合適的溶劑配制儲備液；一旦配成溶液，請分裝保存，避免反復凍融造成的產品失效。
儲備液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 儲存時，請在 6 個月內使用，-20°C 儲存時，請在 1 個月內使用。

In Vivo:

以下溶解方案都請先按照 In Vitro 方式配制澄清的儲備液，再依次添加助溶劑：

——為保證實驗結果的可靠性，澄清的儲備液可以根據儲存條件，適當保存；體內實驗的工作液，建議您現用現配，當天使用；以下溶劑前顯示的百
分比是指該溶劑在您配制終溶液中的體積占比；如在配制過程中出現沉淀、析出現象，可以通過加熱和/或超聲的方式助溶

1.

請依序添加每種溶劑： 0.5% CMC-Na 0.5% Tween-80
Solubility: 5 mg/mL (10.43 mM); Suspened solution; Need ultrasonic
2.

請依序添加每種溶劑： 10% EtOH 40% PEG300 5% Tween-80 45% saline
Solubility: ≥ 2.5 mg/mL (5.21 mM); Clear solution
3.

請依序添加每種溶劑： 10% EtOH 90% (20% SBE-β-CD in saline)
Solubility: ≥ 2.5 mg/mL (5.21 mM); Clear solution
4.

請依序添加每種溶劑： 10% EtOH 90% corn oil
Solubility: ≥ 2.5 mg/mL (5.21 mM); Clear solution
5.

請依序添加每種溶劑： 10% DMSO 40% PEG300 5% Tween-80 45% saline
Solubility: ≥ 2.08 mg/mL (4.34 mM); Clear solution
6.

請依序添加每種溶劑： 10% DMSO 90% (20% SBE-β-CD in saline)
Solubility: ≥ 2.08 mg/mL (4.34 mM); Clear solution
7.

請依序添加每種溶劑： 10% DMSO 90% corn oil
Solubility: ≥ 2.08 mg/mL (4.34 mM); Clear solution

參考文獻

[1]. Theodoropoulos PA, et al. Cytochalasin B may shorten actin filaments by a mechanism independent of barbed end capping. Biochem Pharmacol. 1994 May 18;47(10):1875-81.

[2]. Trendowski M, et al. Chemotherapy with cytochalasin congeners in vitro and in vivo against murine models. Invest New Drugs. 2015 Apr;33(2):290-9.

[3]. Zhou C, et al. The effect of Cytochalasin B and Jasplakinolide on depolymerization of actin filaments in goose muscles during postmortem conditioning. Food Res Int. 2016 Dec;90:1-7.

注：產品僅用于科研