Dimethyldioctadecylammonium (DDA) is a cationic amphipathic lipid. DDA liposomes containing an Ag85B-ESAT-6 antigen induce antigen deposition at an intramuscular or subcutaneous injection site in mice, increasing immune cell exposure to the antigen. In a guinea pig model of M. tuberculosis infection, spleen bacterial load is reduced and lung and spleen lesion numbers are decreased when the mycobacterial lipid antigens Ac2SGL and PIM2 are administered in liposomes comprised of DDA and a synthetic analog of the mycobacterial cord factor trehalose 6,6-dibehenate (TDB). DDA has also been used in the study of lipid bilayer dynamics.
LL-37, Human TFA (154947-66-7 free base)是一种由37个残基组成的两亲性螺旋肽,是唯一的人源cathelicidin抗菌肽,对多种革兰氏阴性和革兰氏阳性细菌具有中等抑菌活性。LL-37, Human TFA与带负电荷的细菌膜结合并破坏细胞完整性,还能够诱导细胞免疫调节、迁移、增殖和分化,具有抗生物膜潜力,还能够抑制胃癌的肿瘤发生。
The a-helix of the amphipathic peptide antibiotic LAH4 (KKALLALALHHLAHLALHLALALKKA-NH2) strongly interacts with phospholipid membranes, demonstrating in vitro transfection efficiencies comparable to those of commercially available reagents.