鈣黃綠素活性染料選擇指南-分析方法-資訊-生物在線

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鈣黃綠素活性染料選擇指南

作者:西安百螢生物科技有限公司 2023-05-19T00:00 (訪問量:12122)

?鈣黃綠素 AM 是一種膜滲透性熒光酯酶底物,通常用于檢測細胞活性和質膜完整性。作為一種近中性的底物,鈣黃綠素 AM 可以自由、無創地擴散穿過質膜并滲透到活細胞的胞質溶膠中。一旦進入細胞內,代謝活躍細胞中的胞質酯酶會迅速將非熒光鈣黃綠素?AM?底物水解成鈣黃綠素產物,并由具有完整質膜的細胞保留。由于死細胞缺乏酯酶活性,因此僅標記活細胞。在藍光激發下,鈣黃綠素發出強烈的綠色熒光,與細胞酯酶的活性和樣品中存在的活細胞數量成正比。與其他活細胞標記試劑(如?BCECF AM?或羧基熒光素二乙酸酯)相比,鈣黃綠素?AM?熒光更亮、光穩定性更好,低細胞毒性有利于細胞追蹤、細胞凋亡和細胞毒性的研究。

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? ? ? AAT Bioquest 提供多種可供選擇的用于細胞活力分析的鈣黃綠素?AM?產品。除了傳統的綠色熒光鈣黃綠素?AM?之外,我們還提供發出藍色、橙色、紅色和深紅色熒光的鈣黃綠素?AM?衍生物。

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鈣黃綠素活性染料選擇指南

          Dye

          Calcein Blue

          CytoCalcein? Violet 450

          Calcein UltraBlue?

          CytoCalcein? Violet 500

          Calcein UltraGreen?

          Calcein

          Calcein Orange?

          Calcein Red?

          Calcein Deep Red?

          Principle

          In live cells, non-fluorescent calcein AM is converted to a fluorescent calcein product after AM ester hydrolysis by intracellular esterases.

          Readout

          Live cells are highly fluorescent and easily distinguishable from dead cells, which are non-fluorescent.

          Laser(nm)

          UV (350)

          Violet (405)

          UV (350)

          Violet (405)

          Blue (488)

          Blue (488)

          Green (532)

          Yellow (561-568)

          Red (633-647)

          Ex/Em(nm)

          354/441

          406/445

          359/458

          420/505

          492/514

          501/521

          531/545

          562/576

          643/663

          Multiplexable

          Yes

          Yes

          Yes

          Yes

          Yes

          Yes

          Yes

          Yes

          Yes

          Dye Compatibility

          Compatible with green and red fluorescent proteins, indicators, and other probes

          Compatible with green and red fluorescent proteins, indicators, and other probes

          Compatible with green and red fluorescent proteins, indicators, and other probes

          Compatible with blue and red fluorescent proteins, indicators, and other probes

          Compatible with blue and red fluorescent proteins, indicators, and other probes

          Compatible with blue and red fluorescent proteins, indicators, and other probes

          Compatible with blue and red fluorescent proteins, indicators, and other probes

          Compatible with blue and green fluorescent proteins, indicators, and other probes

          Compatible with blue and green fluorescent proteins, indicators, and other probes

          Sample Type

          Live Cells

          Platform

          Fluorescence Microscope, Fluorescence Microplate Reader, Flow Cytometer

          Cat No.

          AM Ester

          22007

          22012

          21908

          22013

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