APC 366 (trifluoroacetate salt)
mRNA synthesis
In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
Tyramide Signal Amplification (TSA)
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Phos Binding Reagent Acrylamide
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
Cell Counting Kit-8 (CCK-8)
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
SYBR Safe DNA Gel Stain
Safe and sensitive stain for visualization of DNA or RNA in agarose or acrylamide gels.
Inhibitor Cocktails
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
APC 366 (trifluoroacetate salt)是类胰蛋白酶的选择性竞争性抑制剂[1,2,3]。APC 366 (trifluoroacetate salt)与人胰蛋白酶孵育4小时后,表现出抑制作用,Ki值和IC50值分别为530 nM和1400 ± 240 nM[3]。
类胰蛋白酶是肥大细胞丝氨酸蛋白酶,参与变应性哮喘的病理生理学[2]。
类胰蛋白酶的活性依赖于完整的催化位点。APC 366 (trifluoroacetate salt)抑制类胰蛋白酶诱导的DNA合成和平滑肌细胞(SMC)增殖。在这项研究中,APC 366 (trifluoroacetate salt)将胸苷的结合减少79%。加热灭活酶的活性也消除了类胰蛋白酶刺激的SMC增殖和DNA合成的能力[4]。
在对照猪的尿液中,变应原攻击后组胺的浓度立即升高。随着APC 366 (trifluoroacetate salt)处理组胺的浓度显著下降[5]。绵羊模型在体研究中,APC 366减少过敏原诱发的早期和晚期阶段的支气管收缩和高反应性[4]。在过敏性羊中,使用气溶胶方式给药APC 366 (trifluoroacetate salt)。在对照组试验中,抗原攻击引起的峰值早期和晚期特定肺阻力增加分别为基线的259 ± 30%及83 ± 27%。前0.5小时、4小时后及24小时后的抗原刺激,9 mg/3 ml水中APC 366治疗略微降低了峰值的早期反应(194 ± 41%),并显著抑制了晚期应答(38 ± 6%,p < 0.05)[2]。
参考文献:
[1]. Krishna MT, Chauhan A, Little L, et al. Inhibition of mast cell tryptase by inhaled APC 366 attenuates allergen-induced late-phase airway obstruction in asthma. Journal of Allergy and Clinical Immunology, 2001, 107(6): 1039-1045.
[2]. Clark JM, Abraham WM, Fishman CE, et al. Tryptase inhibitors block allergen-induced airway and inflammatory responses in allergic sheep. American journal of respiratory and critical care medicine, 1995, 152(6): 2076-2083.
[3]. Hallgren J, Estrada S, Karlson U, et al. Heparin antagonists are potent inhibitors of mast cell tryptase. Biochemistry, 2001, 40(24): 7342-7349.
[4]. Berger P, Perng DW, Thabrew H, et al. Tryptase and agonists of PAR-2 induce the proliferation of human airway smooth muscle cells. Journal of Applied Physiology, 2001, 91(3): 1372-1379.
[5]. Sylvin H, Dahlbck M, Van Der Ploeg I, et al. The tryptase inhibitor APC-366 reduces the acute airway response to allergen in pigs sensitized to Ascaris suum. Clinical & Experimental Allergy, 2002, 32(6): 967-971.
Physical Appearance | White lyophilised solid |
Storage | Store at -20°C |
M.Wt | 440.5 |
Cas No. | 158921-85-8 |
Formula | C22H28N6O4 • XCF3COOH |
Solubility | Soluble to 5 mg/ml in 20% ethanol / H2O |
Chemical Name | (S)-1-((S)-5-guanidino-2-(1-hydroxy-2-naphthamido)pentanoyl)pyrrolidine-2-carboxamide |
SDF | Download SDF |
Canonical SMILES | O=C(C1=C(O)C2=CC=CC=C2C=C1)N[C@@H](CCCNC(N)=N)C(N3[C@H](C(N)=O)CCC3)=O |
运输条件 | 蓝冰运输或根据您的需求运输。 |
一般建议 | 不同厂家不同批次产品溶解度各有差异,仅做参考。若实验所需浓度过大至产品溶解极限,请添加助溶剂助溶或自行调整浓度。溶液形式一般不宜长期储存,请尽快用完。 |