DiR'; DiIC18(7)(1,1'-双十八烷基-3,3,3',3'-四甲基吲哚三碳菁碘)
Invitrogen17万+抗体限时买二赠一,靶点广,灵活用!
DiR'; DiIC<sub>18</sub>(7)(1,1'-双十八烷基-3,3,3',3'-四甲基吲哚三碳菁碘)
Invitrogen™

DiR'; DiIC18(7)(1,1'-双十八烷基-3,3,3',3'-四甲基吲哚三碳菁碘)

发近红外荧光的亲脂性碳氰酸酯 DiOC18(7)(“DiR”)在水中发弱荧光,但在掺入膜中后会发出极其明亮且光稳定的荧光。此类 DiI 类似物中掺入的磺酸盐基团可提高水溶性。在脂质环境中,其具有超高的消光系数和较短激发态寿命(∼1 纳秒了解更多信息
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货号数量
D1273110 mg
货号 D12731
价格(CNY)
3,198.00
飞享价
Ends: 31-Dec-2025
4,334.00
共减 1,136.00 (26%)
Each
添加至购物车
数量:
10 mg
价格(CNY)
3,198.00
飞享价
Ends: 31-Dec-2025
4,334.00
共减 1,136.00 (26%)
Each
添加至购物车
发近红外荧光的亲脂性碳氰酸酯 DiOC18(7)(“DiR”)在水中发弱荧光,但在掺入膜中后会发出极其明亮且光稳定的荧光。此类 DiI 类似物中掺入的磺酸盐基团可提高水溶性。在脂质环境中,其具有超高的消光系数和较短激发态寿命(∼1 纳秒)。添加到细胞中后,这种染料就会在细胞膜内侧向扩散。
仅供科研使用。不可用于诊断程序。
规格
颜色红外的
检测方法荧光
适用于(设备)荧光显微镜
数量10 mg
运输条件室温
产品类型DiR DiIC18(7)
亚细胞定位质膜、细胞膜&脂质, Lipids, Plasma Membrane
Unit SizeEach
内容与储存
室温避光储存。

常见问题解答 (FAQ)

为什么在我用甲醇固定细胞之后,神经元示踪剂信号全部丢失了?

如果您选择的示踪剂是亲脂性染料并且用甲醇固定,脂质会随着甲醇流失。如果您使用甲醇固定,可以选择能够共价结合神经元内的蛋白质的示踪剂。

我用DiI一类的亲脂性花青染料进行细胞染色,但是当我试图继续用抗体标记时信号却丢失了。 这是什么原因所致?

由于这些染料插入脂质膜,任何对膜的破坏都将导致染料流失。这包括用Triton X-100之类的去垢剂或是甲醇之类的有机溶剂通透。通透是胞内抗体标记所必需的,但它会导致染料流失。相反,CFDA SE之类活性染料能够共价连接到细胞组分,因此可以在固定和通透之后更好的保留。

我用DiI标记我的神经元,然后固定和通透,但没有获得信号。 哪个环节出了问题?

DiI是一种亲脂性染料,多数保留在细胞脂质内。当细胞经去垢剂通透或是用乙醇固定时,会去除掉脂质和染料。如果需要通透,可以使用CM-DiI标记,因为CM-DiI会共价结合膜里面的蛋白;部分信号会随着固定/通透丢失,但残留的信号仍足以被检测出。

亲脂性示踪剂跨膜转运需要多久?FAST亲脂性染料能快多少?

转运过程相当缓慢:在活体组织中大约6 mm/天,在固定组织中更慢。亲脂性羰花青示踪剂从开始给样处扩散到神经元末端,可能需要数天甚至数周的时间。FAST DIO和DiI类似物(具有不饱和烷基尾)可以提高50%左右的转运速度。

我应该使用哪种亲脂性示踪剂(DiO、DiI、DiD等)?

请选择与您现有的激发光源和发射滤光片组/通道兼容的染料。固体、糊和晶体形式的染料可直接施加到组织中的神经元。如需标记培养的细胞或进行显微注射,可采用溶液或固态形式的亲脂性染料。

引用和文献 (26)

引用和文献
Abstract
Microenvironmental contaminations induced by fluorescent lipophilic dyes used for noninvasive in vitro and in vivo cell tracking.
Authors:Lassailly F, Griessinger E, Bonnet D,
Journal:Blood
PubMed ID:20215639
'Determining how normal and leukemic stem cells behave in vivo, in a dynamic and noninvasive way, remains a major challenge. Most optical tracking technologies rely on the use of fluorescent or bioluminescent reporter genes, which need to be stably expressed in the cells of interest. Because gene transfer in primary ... More
Myeloid cell microsomal prostaglandin E synthase-1 fosters atherogenesis in mice.
Authors:Chen L, Yang G, Monslow J, Todd L, Cormode DP, Tang J, Grant GR, DeLong JH, Tang SY, Lawson JA, Pure E, Fitzgerald GA
Journal:
PubMed ID:24753592
'Microsomal prostaglandin E synthase-1 (mPGES-1) in myeloid and vascular cells differentially regulates the response to vascular injury, reflecting distinct effects of mPGES-1-derived PGE2 in these cell types on discrete cellular components of the vasculature. The cell selective roles of mPGES-1 in atherogenesis are unknown. Mice lacking mPGES-1 conditionally in myeloid ... More
Use of lipophilic near-infrared dye in whole-body optical imaging of hematopoietic cell homing.
Authors:Kalchenko V, Shivtiel S, Malina V, Lapid K, Haramati S, Lapidot T, Brill A, Harmelin A
Journal:J Biomed Opt
PubMed ID:17092148
'We develop an optical whole-body imaging technique for monitoring normal and leukemic hematopoietic cell homing in vivo. A recently developed near-infrared (NIR) lipophilic carbocyanine dye 1,1''-dioctadecyl-3,3,3'',3''-tetramethylindotricarbocyanine iodide (DiR) is used to safely and directly label the membranes of human leukemic Pre-B ALL G2 cell lines as well as primary murine ... More
Ligand conjugated low-density lipoprotein nanoparticles for enhanced optical cancer imaging in vivo.
Authors:Chen J, Corbin IR, Li H, Cao W, Glickson JD, Zheng G
Journal:J Am Chem Soc
PubMed ID:17428054
Dynamic tracking of stem cells in an acute liver failure model.
Authors:Ezzat T, Dhar DK, Malago M, Olde Damink SW,
Journal:World J Gastroenterol
PubMed ID:22363116
To investigate a dual labeling technique, which would enable real-time monitoring of transplanted embryonic stem cell (ESC) kinetics, as well as long-term tracking. Liver damage was induced in C57/BL6 male mice (n = 40) by acetaminophen (APAP) 300 mg/kg administered intraperitoneally. Green fluorescence protein (GFP) positive C57/BL6 mouse ESCs were ... More