because of their ability to circumvent the problems of drug resistance and in vivo instability. We report novel all-α- and α,γ-mixed Tat peptide analogues as potential antibacterial and anti-TB agents. These peptides have broad spectrum antibacterial activities against Gram-positive (MICs 0.61 ± 0.03 to 1.35 ± 0.21 μM with the peptide γTatM4) and Gram-negative (MICs 0.71 ± 0.005 to 1.26 ± 0.02 μM with
非天然抗微
生物肽具有克服药物耐药性和体内不稳定性问题的能力,因此是下一代抗生素的理想选择。我们报告新型的全α和α,γ混合Tat肽类似物作为潜在的抗菌和抗结核病药物。这些肽具有对革兰氏阳性细菌(MICS为0.61±0.03至1.35±0.21μM,使用肽γTat
M4的细菌)和革兰氏阴性细菌(MICs为0.71±0.005至1.26±0.02μM,对于γTat
M4)具有广谱的抗菌活性,并且还对活性细菌有效和结核分枝杆菌的休眠形式,包括对
利福平和异烟
肼具有抗性的菌株。Tat肽类似物中引入了该研究的非天然
氨基酸,从而提高了对蛋白
水解降解的抵抗力,从而大大延长了其半衰期。