1. Immunology/Inflammation
  2. Complement System
  3. Compstatin TFA

Compstatin TFA 是一个 13 残基环肽,是补体系统 C3 的有效抑制剂,具有物种特异性。Compstatin TFA 结合到狒狒的 C3,并对狒狒血液中的蛋白水解裂解具有抗性 (类似人类)。Compstatin TFA 只抑制灵长类补体系统的激活。Compstatin TFA 对补体经典途径和旁路途径的 IC50 值分别为 63 μM 和 12 μM。

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Custom Peptide Synthesis

Compstatin TFA Chemical Structure

Compstatin TFA Chemical Structure

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Customer Review

Other Forms of Compstatin TFA:

MCE 顾客使用本产品发表的 1 篇科研文献

IF

    Compstatin TFA purchased from MCE. Usage Cited in: J Mater Chem B. 2019, 7, 4207-4216.

    The transfection characterized by inverted fluorescence microscope. GFP-3T3 cells and GFP-MCF-7 cells cultured with 10% FBS were transfected with the addition of C3a or compstatin under the influence of magnetic fields or not.
    • 生物活性

    • 纯度 & 产品资料

    • 参考文献

    生物活性

    Compstatin TFA, a 13-residue cyclic peptide, is a potent inhibitor of the complement system C3 with species specificity. Compstatin TFA binds to baboon C3 and is resistant to proteolytic cleavage in baboon blood (similar to humans). Compstatin TFA inhibits only the activation of primates’ complement system. Compstatin TFA exhibits IC50 values of 63 μM and 12 μM for classical and alterative complement pathway, respectively[1][2][3].

    体外研究
    (In Vitro)

    Compstatin exhibits an in vitro half-life in human blood of about 2 hr[2].
    In solution, compstatin forms a β-turn at residues Gln-5–Gly-8 with the disulfide bridge Cys-2–Cys12, residues Ile-1–Val-4, and Thr-13, forming a hydrophobic cluster[3].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.

    体内研究
    (In Vivo)

    Compstatin (21 mg/kg) produces complete inhibition when given as a combination of bolus injection and infusion. Compstatin completely inhibits in vivo heparin/protamine-induced complement activation without adverse effects on heart rate or systemic arterial, central venous, and pulmonary arterial pressures[1].
    Compstatin is stable in baboon plasma for more than 24 h[1].
    Pig xenografts survival is significantly longer in the Compstatin perfused group than in the control group[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.

    Animal Model: Juvenile baboons (P. Anubis) weighing 10.5-28.8 kg[1].
    Dosage: 50, 25 mg/kg 60 min after heparin and 2 min before protamine.
    Administration: A bolus injection.
    Result: Completely inhibited complement activation induced by heparin–protamine complexes.
    Formula

    C68H100F3N23O19S2

    性状

    固体

    颜色

    White to off-white

    Sequence Shortening

    ICVVQDWGHHRCT-NH2 (Disulfide bridge: Cys2-Cys12)

    运输条件

    Room temperature in continental US; may vary elsewhere.

    储存方式

    Sealed storage, away from moisture and light

    Powder -80°C 2 years
    -20°C 1 year

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

    溶解性数据
    细胞实验: 

    DMSO 中的溶解度 : 100 mg/mL (超声助溶; 吸湿的 DMSO 对产品的溶解度有显著影响,请使用新开封的 DMSO)

    H2O 中的溶解度 : 50 mg/mL (超声助溶)

    • 摩尔计算器

    • 稀释计算器

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

    质量
    =
    浓度
    ×
    体积
    ×
    分子量 *

    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    浓度 (start)

    C1

    ×
    体积 (start)

    V1

    =
    浓度 (final)

    C2

    ×
    体积 (final)

    V2

    动物实验:

    请根据您的 实验动物和给药方式 选择适当的溶解方案。

    以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:
    ——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用
    以下溶剂前显示的百分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

    • 方案 一

      请依序添加每种溶剂: 10% DMSO    40% PEG300    5% Tween-80    45% Saline

      Solubility: ≥ 2.75 mg/mL; 澄清溶液

      此方案可获得 ≥ 2.75 mg/mL(饱和度未知)的澄清溶液。

      1 mL 工作液为例,取 100 μL 27.5 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;再向上述体系中加入 50 μL Tween-80,混合均匀;然后再继续加入 450 μL 生理盐水 定容至 1 mL

      生理盐水的配制:将 0.9 g 氯化钠,溶解于 ddH₂O 并定容至 100 mL,可以得到澄清透明的生理盐水溶液。
    • 方案 二

      请依序添加每种溶剂: 10% DMSO    90% (20% SBE-β-CD in Saline)

      Solubility: ≥ 2.75 mg/mL; 澄清溶液

      此方案可获得 ≥ 2.75 mg/mL(饱和度未知)的澄清溶液。

      1 mL 工作液为例,取 100 μL 27.5 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液 中,混合均匀。

      20% SBE-β-CD in Saline 的配制(4°C,储存一周):2 g SBE-β-CD(磺丁基醚 β-环糊精)粉末定容于 10 mL 的生理盐水中,完全溶解至澄清透明。
    动物溶解方案计算器
    请输入动物实验的基本信息:

    给药剂量

    mg/kg

    动物的平均体重

    g

    每只动物的给药体积

    μL

    动物数量

    由于实验过程有损耗,建议您多配一只动物的量
    计算结果
    工作液所需浓度 : mg/mL
    该产品水溶性佳,请具体参考实测 水 / PBS / Saline 中的溶解度数据。
    您所需的储备液浓度超过该产品的实测溶解度,如有需要,请与 MCE 中国技术支持联系。
    纯度 & 产品资料
    参考文献
    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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    产品名称:
    Compstatin TFA
    目录号:
    HY-P1036A
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