WST-1细胞增殖及细胞毒性检测试剂盒

 产品编号: C0035
 产品包装: 100次
 产品价格: 168.00元
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产品简介

产品简介:

产品编号 产品名称 产品包装 产品价格
C0035 WST-1细胞增殖及细胞毒性检测试剂盒 100次 168.00元

    WST-1细胞增殖及细胞毒性检测试剂盒(WST-1 Cell Proliferation and Cytotoxicity Assay Kit)是一种广泛应用于细胞增殖和细胞毒性的快速高灵敏度检测试剂盒。
    WST-1是一种类似于MTT的化合物,在电子耦合试剂存在的情况下,可以被线粒体内的一些脱氢酶还原生成橙黄色的formazan(参考图1)。细胞增殖越多越快,则颜色越深;细胞毒性越大,则颜色越浅。
        
    图1. WST-1检测原理图 (EC=electron coupling reagent,即电子耦合试剂)
    WST-1是MTT的一种升级替代产品,和MTT或其它MTT类似产品如XTT、MTS等相比有明显的优点。首先,MTT被线粒体内的一些脱氢酶还原生成的formazan不是水溶性的,需要有特定的溶解液来溶解;而WST-1和XTT、MTS产生的formazan都是水溶性的,可以省去后续的溶解步骤。其次,WST-1产生的formazan比XTT和MTS产生的formazan更易溶解。再次,WST-1比XTT和MTS更加稳定,使实验结果更加稳定。另外,WST-1和MTT、XTT等相比,线性范围更宽,灵敏度更高(参考图2)。
                    
    图2. WST-1、XTT和MTT的检测效果比较 注:450nm为测定波长,690nm为参考波长
    本试剂盒可以用于细胞因子等诱导的细胞增殖检测,也可以用于抗癌药物等对细胞有毒试剂诱导的细胞毒性检测,或一些药物诱导的细胞生长抑制检测等。
    本试剂盒检测非常便捷。无须使用同位素,所有的检测步骤仅在同一块96孔板内完成。不必洗涤细胞,不必收集细胞,也不必采用额外步骤去溶解formazan。可以用于大批量样品的检测。
    酚红和血清对本试剂盒的测定无明显影响。
    WST-1对细胞无明显毒性。加入WST-1显色后,可以在不同时间反复用酶标仪读板,使检测时间更加灵活,便于找到最佳测定时间。
    关于不同细胞增殖和细胞毒性检测试剂盒的比较和选择,请参考http://www.beyotime.com/mtt-comp.htm
    本试剂盒可以测定100个样品。
包装清单:

产品编号

产品名称

包装

C0035-1

WST-1(粉末)

1管

C0035-2

电子耦合试剂

1ml

说明书

1份

保存条件:
    -20℃避光保存,一年有效。WST-1粉末溶解后,4℃避光可以保存一周,-20℃避光可以保存半年(宜适当分装,尽量避免反复冻融)。
注意事项:
    由于使用96孔板进行检测,如果细胞培养时间较长,一定要注意蒸发的问题。一方面,由于96孔板周围一圈最容易蒸发,可以采取弃用周围一圈的办法,改加PBS,水或培养液;另一方面,可以把96孔板置于靠近培养箱内水源的地方,以缓解蒸发。
    为了您的安全和健康,请穿实验服并戴一次性手套操作。

使用说明

使用说明:
1. WST-1溶液的配制:把1毫升电子耦合试剂加入到WST-1粉末中,完全溶解即成WST-1溶液。WST-1溶液4℃
   避光可保存一周,而不影响使用效果。短期内不使用的WST-1溶液,分装后可以-20℃避光保存半年(尽量
   避免反复冻融)。冻存的WST-1溶液溶解后可能会观察到一些沉淀物,这是正常现象,37℃水浴孵育2-10
   分钟,通常可以完全溶解。
2. 通常细胞增殖实验每孔加入100微升2000个细胞,细胞毒性实验每孔加入100微升5000个细胞(具体每孔所
   用的细胞的数目,需根据细胞的大小,细胞增殖速度的快慢等因素决定)。按照实验需要,进行培养并给
   予0-10微升特定的药物刺激。
3. 每孔加入10微升WST-1溶液。如果起始的培养体积为200微升,则需加入20微升WST-1溶液,其它情况以此
   类推。可以用加了相应量细胞培养液和WST-1溶液但没有加入细胞的孔作为空白对照。
4. 在细胞培养箱内继续孵育0.5-4小时,对于大多数情况,孵育1-2小时就可以了。时间长短根据细胞的类
   型和细胞的密度等实验情况而定,初次实验时可以在0.5、1、2和4小时后分别用酶标仪检测,然后选取
   吸光度范围比较适宜的一个时间点用于后续实验。图3为HT-1080细胞在不同时间测定的细胞数量曲线。
                     
            图3. HT-1080细胞培养20小时后,加入WST-1溶液后不同时间测得的吸光度。
5. 把96孔板置于摇床上摇动一分钟,以充分混匀待检测体系。
6. 在450nm测定吸光度。如无450nm滤光片,可以使用420-480nm的滤光片。可以使用大于600nm的波长作为
   参考波长进行双波长测定。

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