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大白杨

银虫 (小有名气)

[求助] ROS活性氧检测中如何去除悬浮细胞中的未进入细胞的DCFH-DA 已有1人参与

说明书上只有贴壁细胞的方法。我自己的想法是通过先离心去上清液然后又加入培养液重悬再离心,反复几次来清洗,但是这样会损失细胞,影响活性氧水平检测的结果。求教有没有好的方法解决这个问题。(我实验用的细胞是悬浮细胞,不是贴壁细胞)
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饿的神啊

新虫 (著名写手)

【答案】应助回帖

楼主你的问题解决没有啊?我也想用ROS检测试剂盒,发现适用于贴壁细胞,可我的材料是植物叶片,发现篇文献,可是细节方面描述的不清楚,所以想请教一下楼主
Leaf tissue from wild-type tobacco and tobacco constitutively
expressing HopG1–HA was ground in liquid nitrogen and resus-
pended in ice-cold 10 mM Tris-HCl, pH 7.3. Samples were
centrifuged twice to remove cell debris and 0.1 ml of the
supernatant was placed in duplicate on a Microfluor
®1 white wellplate (Thermo Scientific, http://www.thermofisher.com). 2′-7′-
dichlorodihydrofluorescein diacetate (H2DCFDA, Invitrogen,
http://www.Invitrogen.com) to a final concentration of 10 mM was
added to the wells and mixed. Fluorescence was measured with
an excitation wavelength of 485 nm and an emission wavelength
of 535 nm on a CaryEcilpse fluorometer. Protein content was
determined by the Bradford assay and relative basal ROS levels
calculated with wild-type tobacco were set to 1.
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