Methoxy-X04
目录号 : GC10894Methoxy-X04是一种具有荧光性的刚果红和柯胺G的衍生物,不含酸性基团,分子量更小且亲脂性更强。
Cas No.:863918-78-9
Sample solution is provided at 25 µL, 10mM.
Methoxy-X04 is a fluorescent derivative of Congo Red and Thioflavin T, lacking acidic groups, with a smaller molecular weight and increased lipophilicity. Methoxy-X04 can cross the blood-brain barrier and selectively binds to the beta-sheet structures in dense core amyloid-beta (Aβ) plaques. Methoxy-X04 retains its in vitro binding affinity for amyloid-beta (Aβ) protofibrils, Ki=26.8nM. In vitro, Methoxy-X04 can stain plaques, tangles, and cerebral amyloid angiopathy in post-mortem Alzheimer's disease (AD) brain sections, demonstrating good specificity. In vivo, Methoxy-X04 can be used for imaging Aβ amyloid plaques in the brains of living APP/PS1 mice [1,2].
References:
[1] Bisht K, et al. Correlative Light and Electron Microscopy to Study Microglial Interactions with β-Amyloid Plaques. J Vis Exp. 2016 Jun 1;(112):54060.
[2] Klunk WE, et al. Imaging Abeta plaques in living transgenic mice with multiphoton microscopy and methoxy-X04, a systemically administered Congo red derivative. J Neuropathol Exp Neurol. 2002 Sep;61(9):797-805.
Methoxy-X04是一种具有荧光性的刚果红和柯胺G的衍生物,不含酸性基团,分子量更小且亲脂性更强。Methoxy-X04可以穿过血脑屏障,选择性地结合在致密中心淀粉样蛋白Aβ斑块中的β-折叠层。Methoxy-X04 保留对淀粉样蛋白-β(aβ)原纤维的体外结合亲和力 ,Ki= 26.8 nM。Methoxy-X04在体外可对阿兹海默症 (AD) 大脑死后切片中的斑块、缠结和脑血管淀粉样蛋白进行染色,具有良好的特异性。Methoxy-X04在体内可用于APP/PS1小鼠活体内的大脑Aβ淀粉样斑块成像[1,2]。
本方案仅提供一个指导,请根据您的具体需要进行修改。
1、制备染色液
溶剂:10%DMSO、45%丙二醇和45%磷酸盐缓冲盐水(pH7.5,0.01M,5mg/ml)
(1)、使用微量天平称取5 mg Methoxy-X04,在通风橱下将Methoxy-X04溶解在DMSO中并搅拌直至获得澄清的绿色溶液;
(2)、依次加入丙二醇和磷酸盐缓冲盐水,每次加入时搅拌;
(3)、将溶液置于旋转器上,4℃搅拌至黄绿色乳剂状态;
2、动物注射:实验动物以小鼠为例,使用时Methoxy-X04以10 mg/kg的剂量通过腹腔注射给药。
3、组织冷冻切片,建议样本厚度:40-50 µm;
4、在荧光显微镜下检查切片,以鉴别含有Methoxy-X04标记的Aβ斑块的区域。
注:使用荧光紫外(UV)滤光片(激发波长340 - 380 nm)可以很容易地观察到Methoxy-X04。
注意事项:
1)荧光染料均存在淬灭问题,请尽量注意避光,以减缓荧光淬灭。
2)为了您的安全和健康,请穿实验服并戴一次性手套操作。
References:
[1]. Kanchan Bisht,et,al. Correlative Light and Electron Microscopy to Study Microglial Interactions with β-Amyloid Plaques. 2016 Jun 1:(112):54060. doi: 10.3791/54060.
[2]. Marcin Sadowski,et,al. Targeting prion amyloid deposits in vivo. 2004 Jul;63(7):775-84. doi: 10.1093/jnen/63.7.775.
Cas No. | 863918-78-9 | SDF | |
化学名 | 4,4'-((1E,1'E)-(2-methoxy-1,4-phenylene)bis(ethene-2,1-diyl))diphenol | ||
Canonical SMILES | COC1=C(C=CC(/C([H])=C([H])/C2=CC=C(O)C=C2)=C1)/C([H])=C([H])/C3=CC=C(O)C=C3 | ||
分子式 | C23H20O3 | 分子量 | 344.4 |
溶解度 | 5 mg/ml in ethanol; 30 mg/ml in DMSO and DMF | 储存条件 | Store at -20°C,protect from light |
General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。 为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。 |
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Shipping Condition | 评估样品解决方案:配备蓝冰进行发货。所有其他可用尺寸:配备RT,或根据请求配备蓝冰。 |
制备储备液 | |||
1 mg | 5 mg | 10 mg | |
1 mM | 2.9036 mL | 14.518 mL | 29.036 mL |
5 mM | 0.5807 mL | 2.9036 mL | 5.8072 mL |
10 mM | 0.2904 mL | 1.4518 mL | 2.9036 mL |
第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量) | ||||||||||
给药剂量 | mg/kg | 动物平均体重 | g | 每只动物给药体积 | ul | 动物数量 | 只 | |||
第二步:请输入动物体内配方组成(配方适用于不溶于水的药物;不同批次药物配方比例不同,请联系GLPBIO为您提供正确的澄清溶液配方) | ||||||||||
% DMSO % % Tween 80 % saline | ||||||||||
计算重置 |
计算结果:
工作液浓度: mg/ml;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL,
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL saline,混匀澄清。
1. 首先保证母液是澄清的;
2.
一定要按照顺序依次将溶剂加入,进行下一步操作之前必须保证上一步操作得到的是澄清的溶液,可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
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Related Biological Data
HD alleviates Aβ pathology in transgenic C. elegans. (C) Methoxy-X04 was used for Aβ staining.
Methoxy-X04 was used to stain Aβ plaques (Meilandt et al., 2019) in GMC101.The synchronized L4 stage nematodes were administered drugs at 16 °C for 36 h, then transferred to 25 °C for 24 h to induce Aβ formation, and the surviving nematodes were collected and placed in Methoxy-X04(GLPBIO)(1 mM in 10 mM Tris, pH=8.0) for staining 4 h.
Phytomedicine (2023): 154711. PMID: 36809694 IF: 6.6563 -
Related Biological Data
The effect of MG against Aβ-induced pathological and behavioral injury was blocked by GW9662 (20 μM). (A) Aβ deposits were stained by methoxy-X04 in GMC101.
Live worms were collected and incubated in methoxy-X04 solution (GLPBIO)(1 mM in 10 mM Tris, pH8.0) staining for 4 h at 25 °C, and then transferred to seeded NGM plates for 12 h to allow destaining via normal metabolism.
Biomed Pharmacother 124 (2020): 109886. PMID: 32000045 IF: 6.524