N-Formyl-Met-Leu-Phe (fMLP) ;fMLF;Chemotactic peptide 趋化肽;FPR1 agonist;甲酰化肽受体激动剂;CAS:59880-97-6;
产品信息
产品名称 |
规格 | ||
N-Formyl-Met-Leu-Phe (fMLP) N-甲酰-蛋氨酸-亮氨酸-苯丙氨酸 |
|
25mg | |
50mg |
产品描述
N-甲酰-蛋氨酸-亮氨酸-苯丙氨酸(N-Formyl-Met-Leu-Phe, fMLP),一种有效的内源性趋化肽,是甲酰化肽受体1(FPR1)(Ki=38nM)的激动剂。fMLP活化甲酰化肽受体(FPRs)引起细胞活化,典型特征有细胞极化、趋化性和蛋白水解酶的释放。fMLP是吞噬性白细胞的化学引诱物。刺激随机和定向移动。是超氧化物释放的诱导剂。fMLP诱导分离豚鼠空肠(EC50 = 11 nM)、近端结肠(EC50 = 3.5 nM)和远端结肠(EC50 = 2.2 nM)的收缩。体外,fMLP诱发肠运动神经元神经递质的释放。
产品特性
1) CAS NO:59880-97-6
2) 化学名:N-formyl-L-methionyl-L-leucyl-L-phenylalanine
3) 同义名:fMLF; fMLP; N-Formyl-MLF; NSC 350593;
4) 分子式:C21H31N3O5S
5) 分子量:437.6 g/mol
6) 纯度:≥98%
7) 外观:固体
8) 溶解性:溶于DMSO(30mg/ml)、DMF(25mg/ml)、乙醇(0.5mg/ml),几乎不溶于水
9) 单字母序列:Formyl-MLF
10) 三字母序列:Formyl-Met-Leu-Phe
11) 化学结构式:
保存与运输方法
保存:-20℃干燥保存,至少1年有效。
运输:冰袋运输。
注意事项
1) 关于化合物溶解性:产品特性内的“≥”表明溶于标示浓度,但饱和溶解度未知。不同批次化合物的溶解度会有差异。
2) 为了让化合物更好的溶解,可通过37℃加热或(和)超声波水浴中震动片刻来处理。若实验所需浓度过大甚至达产品溶解极限,请添加助溶剂助溶或自行调整浓度。
3) 为了您的安全和健康,请穿实验服并戴一次性手套操作。
储存液制备
质量
溶剂体积 浓度 |
5mg | 25mg | 50mg |
1mM | 11.4260 mL | 57.1298 mL | 114.2596 mL |
5mM | 2.2852 mL | 11.4260 mL | 22.8519 mL |
10mM | 1.1426 mL | 5.7130 mL | 11.4260 mL |
【温馨提示①】: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。储备液置于-80°C保存,约6个月有效;-20°C保存,约1个月有效。
【温馨提示②】:建议用无氧水来配制稀释fMLP储存液的缓冲液(比如:PBS,生理盐水),由于蛋氨酸对氧敏感。稀释后的工作液现配现用。
使用方法【源自文献,仅作参考】
文献1,Hamilton JL, Mohamed MF, Witt BR, Wimmer MA, Shafikhani SH. Therapeutic assessment of N-formyl-methionyl-leucyl-phenylalanine (fMLP) in reducing periprosthetic joint infection. Eur Cell Mater. 2021;42:122-138. Published 2021 Aug 26. doi:10.22203/eCM.v042a
体内研究(动物模型): 动物模型(Animal Model):12-week-old C57BL/6J mice 配制方法(Formulation):fMLP was prepared at a concentration of 1 μg/μL in a solution of 25 % DMSO and 75 % PBS. Vehicle control was a 5 μL solution of 25 % DMSO and 75 % PBS. 实验方法(Assay):12-week-old C57BL/6J mice received local intra-articular injection of fMLP or vehicle control at the right-knee joint. Mice were anaesthetised using 2 % isoflurane. A total of 5 μL of fMLP solution or vehicle control was injected into the right hindlimb knee joint using a 5 μL Hamilton® syringe and 27-Gauge needle, as previously described. The dosing of 5 μg of fMLP was chosen based on its maximum solubility in vehicle solution and maximum volume of solution that could be injected into the knee-joint space. |
文献2,Zhu L, He P. fMLP-stimulated release of reactive oxygen species from adherent leukocytes increases microvessel permeability. Am J Physiol Heart Circ Physiol. 2006 Jan;290(1):H365-72. doi: 10.1152/ ajpheart.00812.2005. Epub 2005 Sep 9. PMID: 16155097.
体外研究(细胞水平): 细胞类型(Cell Type):Rat neutrophils 配制方法(Formulation):The stock solution of fMLP (10 mM) was prepared with 100% DMSO, and the final concentration (10 μM) was achieved by 1:1,000 dilution with albumin-Ringer solution. 实验方法(Assay):Neutrophils were preincubated at 37°C for 10 min before the CL measurement. Each sample (0.25 ml) contained 0.5 × 106 neutrophils with 0.8 μM luminol. The reaction to fMLP (10 μM final concentration) or TNF-α (5 ng/ml final concentrations) was initiated by automated injection to ensure an immediate mixing and measurement. |
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