Tested and Certified for in vivo imaging (See "Luciferin FAQ" in additional information)
Luciferin is a common bioluminescent reporter used for in vivo imaging of the expression of luciferase. This water soluble substrate for the firefly luciferase enzyme utilizes ATP and Mg2+ as cofactors to emit a characteristic yellow-green emission in the presence of oxygen, which shifts to red light in vivo at 37°C.Through the utilization of ATP, the reaction can be further used to indicate the presence of energy or life in order to function as a life-death stain.
Luciferin is a common reagent used throughout the biotechnology field and specifically for in vivo imaging.Luciferase labeled tumor cells, stem cells or infectious diseases are often inoculated into research animals such as rats or mice for investigation.The injection of Luciferin allows for the real-time, noninvasive monitoring of disease progression and/or drug efficacy in these model systems through Bioluminescence Imaging (BLI).
Luciferin is also commonly used for in vitro research, including luciferase and ATP assays, gene reporter assays, high throughput sequencing and various contamination assays.
L-Luciferin is the chiralic sister to D-luciferin.While most researchers claim that L-luciferin does not produce any light, Lembert has reported that it produces a very weak and extremely slow manifesting light (Lembert, 1996).Nakamura suggested that an enzyme system incorporating luciferase might be responsible for changing the chirality of the L-luciferin to D-luciferin (Nakamura et al., 2006) (See Reference Library).
Product Specifications:L-Luciferin, Potassium Salt4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid potassium salt
Forms a yellow, clear solution when dissolved 1% in water.
Formula: C11H7N2O3S2K
MW: 318.42 g/mol
Color: Light yellow powder
Purity: >98% by HPLC
Storage/Handling: Store desiccated in -20°C, and protect from light.
PubChem CID: 135845006
GoldBio活体成像技术:早在1999年由美国哈佛大学Weissleder博士率先提出了分子影像学(molecularimaging,MI)的概念,即应用影像学的方法对活体状态下的生物过程进行细胞和分子水平的定性和定量研究。活体成像便是基于分子影像学孕育而生的,通过这个成像系统,可以观测活体动物体内肿瘤的生长及转移,感染性疾病的发展进程,特定基因的表达等生物学过程。活体成像技术主要采用生物发光(bioluminescence)与荧光(fluorescence)两种技术。★生物发光是用荧光素酶基因标记细胞或DNA。★荧光技术则采用荧光报告基团(GFP、RFP,Cyt及dyes等)进行标记。★这一技术对肿瘤微小转移灶的检测灵敏度极高,不涉及放射性物质和方法,非常安全。操作极其简单、所得结果直观、灵敏度高。
活体成像两种检测技术介绍活体成像特点优点缺点生物发光检测bioluminescence★荧光素酶(Luciferase)对基因、细胞和活体动物进行标记;★荧光素酶催化底物(例如荧光素钾盐)反应后,会产生化学发光。这种光是由化学反应而来,不需要激发光;★标记方法是通过克隆技术,将荧光素酶的基因插入到预期观察的细胞染色体内,通过对克隆细胞进行筛选,培养出能稳定表达荧光素酶的细胞株。再将细胞株转移至特定的小鼠体内形成模型。★特异性强,无自发荧光;★高灵敏度,在体内可检测到几百个细胞,检测的深度在3-100px;★定量精确 ★信号较弱,检测时间较长;★仪器精密度要求较高;★细胞或基因需要转基因标记;★不可用于人体,不适用于抗体、多肽等标记荧光检测fluorescence★采用荧光报告基因(GFP、RFP等)或荧光染料进行标记;★需要外接激发光源,利用报告基因、荧光蛋白质或染料产生的荧光,就可以形成体内的生物光源。★荧光染料、蛋白标记能力强;★信号强,成像速度快,操作简便,实验成本较低;★未来可用于人;★适用范围广,可以是动物、细胞、微生物,也可以是抗体、药物、纳米材料等。★存在自发荧光,影响灵敏度;★光容易被动物组织吸收;★检测深度受限;★背景光干扰,定量准确度低
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