Pap12-6 TFA

产品编号 T83735

Pap12-6是一种从蝶类P. xuthus幼虫中发现的papiliocin十二个N-端氨基酸衍生的抗菌肽。它对包括E. coli、P. aeruginosa和S. syphimurium在内的八种革兰氏阴性细菌（MIC50s = 4-8 µM）以及革兰氏阳性细菌S. aureus、耐甲氧西林的S. aureus 3126（MRSA-3126）、B. subtilis和S. epidermidis（MIC50s = 4-8 µM）具有活性，但在25 µM浓度下不影响人类红细胞、小鼠RAW 264.7巨噬细胞、人类HaCaT角质形成细胞或人类HEK293肾细胞的活性。Pap12-6在4和8 µM浓度下可引起E. coli的膜去极化。Pap12-6（10 µM）预处理可降低LPS刺激的RAW 264.7巨噬细胞中一氧化氮（NO2-）、Tnf-α和Il-6的分泌水平。在体内，Pap12-6（10 mg/kg）可以提高感染E. coli的小鼠的存活率，并且在剂量为1 mg/kg时减少感染E. coli小鼠的肺、肝和肾中菌落形成单位（CFUs）的数量。Pap12-6（1 mg/kg）在E. coli诱导的败血症小鼠模型中降低血清天门冬氨酸转氨酶（AST）和丙氨酸转氨酶（ALT）水平及血尿素氮水平。

Pap12-6 TFA

产品编号 T83735

规格	价格	库存
1 mg	¥ 390	期货
5 mg	¥ 1,830	期货
10 mg	¥ 3,450	期货
25 mg	¥ 8,130	期货

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产品介绍

生物活性

产品描述

Pap12-6, an antibacterial peptide originating from the first twelve N-terminal amino acids of papiliocin found in P. xuthus larvae, exhibits activity against a range of eight Gram-negative bacteria (e.g., E. coli, P. aeruginosa, S. syphimurium with MIC50s=4-8 µM) and Gram-positive bacteria (e.g., S. aureus, methicillin-resistant S. aureus 3126, B. subtilis, and S. epidermidis with MIC50s=4-8 µM), without compromising the viability of human erythrocytes, mouse RAW 264.7 macrophages, human HaCaT keratinocytes, or human HEK293 kidney cells at 25 µM. It causes membrane depolarization in E. coli at 4 and 8 µM and, upon preincubation at 10 µM, decreases nitrite (NO2-), Tnf-α, and Il-6 secretion in LPS-stimulated RAW 264.7 macrophages. In a murine model, Pap12-6 enhances survival rates and diminishes colony forming units (CFUs) in several organs upon E. coli infection at 10 mg/kg and 1 mg/kg doses, respectively. Additionally, at a 1 mg/kg dose, it lowers serum aspartate aminotransferase (AST) and alanine transaminase (ALT) levels, as well as blood urea nitrogen levels in E. coli-induced sepsis, indicating its therapeutic potential for bacterial infections without affecting host cell viability.