貨號(hào) | 23101 | 存儲(chǔ)條件 | 在零下15度以下保存, 避免光照 | |
規(guī)格 | 300 Tests | 價(jià)格 | 1944 | |
Ex (nm) | 498 | Em (nm) | 517 | |
分子量 | ~1100 | 溶劑 | DMSO | |
產(chǎn)品詳細(xì)介紹 |
簡(jiǎn)要概述
產(chǎn)品外觀(guān)形態(tài):液體(注:鬼筆環(huán)肽系列產(chǎn)品有固體和液體兩種,液體為DMSO溶解后的產(chǎn)品,則不需再溶解。)
這種綠色熒光鬼筆環(huán)肽綴合物(相當(dāng)于FITC標(biāo)記的鬼筆環(huán)肽)會(huì)選擇性結(jié)合F-肌動(dòng)蛋白。鬼筆環(huán)肽衍生物經(jīng)常以納摩爾濃度使用,常在甲醛固定和透化的組織切片、細(xì)胞培養(yǎng)或無(wú)細(xì)胞實(shí)驗(yàn)中用于標(biāo)記、鑒定和定量F-肌動(dòng)蛋白的便捷探針。鬼筆環(huán)肽與肌動(dòng)蛋白絲的結(jié)合比與肌動(dòng)蛋白單體的結(jié)合要緊密得多,從而導(dǎo)致肌動(dòng)蛋白亞基從絲端解離的速率常數(shù)降低,從而通過(guò)防止絲解聚而基本穩(wěn)定了肌動(dòng)蛋白絲。而且,發(fā)現(xiàn)鬼筆環(huán)肽抑制F-肌動(dòng)蛋白的ATP水解活性。鬼筆環(huán)肽在細(xì)胞中不同濃度下的功能不同。當(dāng)以低濃度引入細(xì)胞質(zhì)時(shí),鬼筆環(huán)肽將聚合度較低的胞質(zhì)肌動(dòng)蛋白和纖維蛋白吸收到聚集的肌動(dòng)蛋白聚合物的穩(wěn)定“島”中,但它不會(huì)干擾應(yīng)力纖維,即厚的微絲束。鬼筆環(huán)肽的性質(zhì)是研究F-肌動(dòng)蛋白在細(xì)胞中分布的有效工具,方法是用熒光類(lèi)似物標(biāo)記鬼筆環(huán)肽并將其用于染色肌動(dòng)蛋白絲以進(jìn)行光學(xué)顯微鏡觀(guān)察。鬼筆環(huán)肽的熒光衍生物已被證明在定位活細(xì)胞或固定細(xì)胞中的肌動(dòng)蛋白絲以及體外觀(guān)察單個(gè)肌動(dòng)蛋白絲方面非常有用。熒光鬼筆環(huán)肽衍生物已被用作高分辨率研究肌動(dòng)蛋白網(wǎng)絡(luò)的重要工具。鬼筆環(huán)肽-熒光素標(biāo)記探針是AAT Bioquest為多色成像應(yīng)用提供的一種熒光鬼筆環(huán)肽衍生物。
產(chǎn)品說(shuō)明書(shū)
樣品分析方案
概述
在微孔板孔中制備樣品
從板中的樣品中取出液體
添加鬼筆環(huán)肽-熒光素標(biāo)記溶液(100μL/孔)
在室溫下染色細(xì)胞20至90分鐘
清洗細(xì)胞在顯微鏡下觀(guān)察樣品
注意:將小瓶加熱至室溫并在打開(kāi)前短暫離心。
操作步驟
1.將 1 μL 的鬼筆環(huán)肽-熒光素綴合物溶液添加到 1 mL 含 1% BSA的PBS 中。
注意1:鬼筆環(huán)肽綴合物未使用的儲(chǔ)備溶液應(yīng)等分并儲(chǔ)存在-20℃,避光。
注意2:不同的細(xì)胞類(lèi)型可能染色不同。鬼筆環(huán)肽綴合物工作溶液的濃度的制備需要根據(jù)實(shí)際而定。
2.染色細(xì)胞:
2.1執(zhí)行甲醛固定,在室溫下將含3.0-4.0%甲醛的細(xì)胞在PBS中孵育10-30分鐘。
注意:避免使用任何含甲醇的固定劑,因?yàn)榧状紩?huì)在固定過(guò)程中破壞肌動(dòng)蛋白。 優(yōu)選的固定劑是不含甲醇的甲醛。
2.2用PBS沖洗固定細(xì)胞2-3次。
2.3可選:在PBS中加入0.1%Triton X-100固定細(xì)胞(步驟2.2)3至5分鐘,以增加滲透性。 用PBS沖洗細(xì)胞2-3次。
2.4將100μL/孔(96孔板)鬼筆環(huán)肽綴合物工作溶液(來(lái)自步驟1)加入固定的細(xì)胞中,并在室溫下染色細(xì)胞20至90分鐘。
2.5在加上蓋玻片之前,用PBS輕輕沖洗細(xì)胞2至3次以除去過(guò)量的鬼筆環(huán)肽綴合物,然后在顯微鏡下進(jìn)行,密封和成像。
試劑應(yīng)用文獻(xiàn)
Authors: Yutong He, Genlan Ye, Chen Song, Chuangkun Li, Weirong Xiong, Lei Yu, Xiaozhong Qiu, Leyu Wang
Journal: Theranostics. 2018; 8(18): 5159–5177.
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