XTT (sodium salt)
(Synonyms: XTT钠盐) 目录号 : GC45172
XTT (sodium salt)是一种高水溶性、细胞渗透性低、无毒的四唑盐,是细胞代谢活性指示剂。
Cas No.:111072-31-2
Sample solution is provided at 25 µL, 10mM.
XTT (sodium salt) is a highly water-soluble, low-cell-permeable, and non-toxic tetrazolium salt that serves as an indicator of cellular metabolic activity[1]. In living cells, XTT (sodium salt) is reduced by mitochondrial dehydrogenases (such as succinate dehydrogenase) to form an orange water-soluble formazan product, thereby indirectly reflecting the metabolic activity and viability of the cells[2]. The maximum absorption wavelength of XTT (sodium salt) is 450-490nm; the absorbance is proportional to the number of living cells[3]. XTT (sodium salt) is commonly used for colorimetric detection of cell viability and proliferation, and this reaction requires the participation of an electron-coupling agent (such as phenazine methosulfate (PMS) or menadione)[4]. XTT (sodium salt) is typically used in cell toxicity, drug screening, antibacterial activity, and cell proliferation studies[5-7].
References:
[1] Lu JH, Chiu YT, Sung HW, et al. XTT-colorimetric assay as a marker of viability in cryoprocessed cardiac valve. J Mol Cell Cardiol. 1997;29(4):1189-1194.
[2] Scudiero DA, Shoemaker RH, Paull KD, et al. Evaluation of a soluble tetrazolium/formazan assay for cell growth and drug sensitivity in culture using human and other tumor cell lines. Cancer Res. 1988;48(17):4827-4833.
[3] Zhao Q, Ernst JT, Hamilton AD, Debnath AK, Jiang S. XTT formazan widely used to detect cell viability inhibits HIV type 1 infection in vitro by targeting gp41. AIDS Res Hum Retroviruses. 2002;18(14):989-997.
[4] Roehm NW, Rodgers GH, Hatfield SM, Glasebrook AL. An improved colorimetric assay for cell proliferation and viability utilizing the tetrazolium salt XTT. J Immunol Methods. 1991;142(2):257-265.
[5] Brosin A, Wolf V, Mattheus A, Heise H. Use of XTT-assay to assess the cytotoxicity of different surfactants and metal salts in human keratinocytes (HaCaT). A feasible method for in vitro testing of skin irritants. Acta Derm Venereol. 1997;77(1):26-28.
[6] Alotaibi AM, Promdet P, Hwang GB, et al. Zn and N Codoped TiO2 Thin Films: Photocatalytic and Bactericidal Activity. ACS Appl Mater Interfaces. 2021;13(8):10480-10489.
[7] Petel R, Moskovitz M, Tickotsky N, Halabi A, Goldstein J, Houri-Haddad Y. Cytotoxicity and proliferative effects of Iodoform-containing root canal-filling material on RAW 264.7 macrophage and RKO epithelial cell lines. Arch Oral Biol. 2013;58(1):75-81.
XTT (sodium salt)是一种高水溶性、细胞渗透性低、无毒的四唑盐,是细胞代谢活性指示剂[1]。在活细胞中,XTT (sodium salt)通过线粒体脱氢酶(如琥珀酸脱氢酶)将黄色的XTT还原为橙色的水溶性甲臜产物,从而间接反映细胞的代谢活性和存活状态[2]。XTT (sodium salt)最大吸收波长为 450–490nm;吸光度与活细胞数目成正比[3]。XTT (sodium salt)常用于细胞活力和增殖的比色法检测,该反应需电子偶联剂(如吩嗪硫酸甲酯(PMS)或 menadione)参与[4]。XTT (sodium salt)通常用于细胞毒性、药物筛选、抗菌活性及细胞增殖研究[5][6][7]。
使用XTT (sodium salt) 测定细胞活力[1]:
1. 溶液的制备
(1) XTT (sodium salt) 溶液:将XTT (sodium salt) 溶解于热的培养基中,浓度为1mg/mL。
(2) PMS溶液:吩嗪硫酸甲酯(PMS)溶液使用浓度为100mM,溶解在磷酸盐缓冲液 (PBS) 中,保存在4°C。
(3) 混合使用:使用时,加入PMS溶液至XTT溶液中,最终PMS浓度为25μM。
2. 实验步骤
(1) 细胞培养:将待测细胞 (例如T细胞系HT-2) 接种于96孔板中,每孔100μL培养基,37°C孵育40小时。
(2) 加入XTT/PMS 溶液:向每个孔中加入25μL的XTT/PMS溶液,孵育4-8小时。
(3) 测定光密度:孵育结束后,用酶标仪在450nm处测定吸光度,650nm作为参考波长,减去空白对照的吸光度值。
3. 注意事项(1) PMS和XTT溶液建议避光保存。
(2) XTT溶液应新鲜配制,在60°C热水浴中更容易溶解。
(3) 孵育时间视实验需要而定,孵育过长可能导致背景噪音增加。
(4) PMS溶液保存时间较短,最好在1个月内使用完毕。
References:
[1] Roehm NW, Rodgers GH, Hatfield SM, Glasebrook AL. An improved colorimetric assay for cell proliferation and viability utilizing the tetrazolium salt XTT. J Immunol Methods. 1991;142(2):257-265.
Cas No. | 111072-31-2 | SDF | |
别名 | XTT钠盐 | ||
Canonical SMILES | COC(C=C([N+]([O-])=O)C(S([O-])(=O)=O)=C1)=C1N2N=C(C(NC3=CC=CC=C3)=O)N=[N+]2C4=CC(S([O-])(=O)=O)=C([N+]([O-])=O)C=C4OC.[Na+] | ||
分子式 | C22H16N7O13S2•Na | 分子量 | 673.5 |
溶解度 | DMSO : 50 mg/mL (74.24 mM; ultrasonic and warming and heat to 80°C) | 储存条件 | Store at 2-8°C |
General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。 为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。 |
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Shipping Condition | 评估样品解决方案:配备蓝冰进行发货。所有其他可用尺寸:配备RT,或根据请求配备蓝冰。 |
制备储备液 | |||
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1 mg | 5 mg | 10 mg |
1 mM | 1.4848 mL | 7.4239 mL | 14.8478 mL |
5 mM | 0.297 mL | 1.4848 mL | 2.9696 mL |
10 mM | 0.1485 mL | 0.7424 mL | 1.4848 mL |
第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量) | ||||||||||
给药剂量 | mg/kg | 动物平均体重 | g | 每只动物给药体积 | ul | 动物数量 | 只 | |||
第二步:请输入动物体内配方组成(配方适用于不溶于水的药物;不同批次药物配方比例不同,请联系GLPBIO为您提供正确的澄清溶液配方) | ||||||||||
% DMSO % % Tween 80 % saline | ||||||||||
计算重置 |
计算结果:
工作液浓度: mg/ml;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL,
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL saline,混匀澄清。
1. 首先保证母液是澄清的;
2.
一定要按照顺序依次将溶剂加入,进行下一步操作之前必须保证上一步操作得到的是澄清的溶液,可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Quality Control & SDS
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- Purity: >90.00%
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