Interfacial vibrational spectroscopy and Brewster angle microscopy distinguishing the interaction of terpineol in cell membrane models at the air-water interface

被引：11
|
作者：
Jaroque, Guilherme Nunez [1 ]
Sartorelli, Patricia [1 ]
Caseli, Luciano [1 ]
机构：
[1] Univ Fed Sao Paulo, Inst Envinonmental Chem & Pharmaceut Sci, Diadema, SP, Brazil
来源：
BIOPHYSICAL CHEMISTRY | 2019年 / 246卷
基金：
巴西圣保罗研究基金会;
关键词：
gamma-terpineol; Langmuir monolayers; DPPC; DPPE; Air-water interface; CHEMICAL-COMPOSITION; PHASE-TRANSITIONS; ESSENTIAL OILS; MONOLAYERS; PHOSPHOLIPIDS; CONFORMATION; RELEVANCE; BILAYERS; LIPIDS; FILMS;
D O I：
10.1016/j.bpc.2018.12.003
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In this paper, gamma-terpineol, a known monoterpene with biological activity, including in lipidic interfaces, was incorporated in Langmuir monolayers of selected phospholipids as a model for cellular membranes. Surface pressure-area isotherms showed that selected amounts of gamma-terpineol expand DPPC and DPPE monolayers and decreased the monolayer elasticity, confirming the lipid/compound interaction. Characterization with vibrational spectroscopy and Brewster angle microscopy pointed that gamma-terpineol adsorbs on the polar heads of the phospholipids, affecting the gauche conformations of the aliphatic chains, and different patterns were observed for DPPC and DPPE monolayers, indicating a characteristic molecular accommodation of gamma-terpineol along the polar head of the phospholipids. Therefore, distinctive interactions with DPPC and DPPE could be observed regarding the incorporation of gamma-terpineol with each lipid, leading to particular molecular arrangements at the air-water interface and pointing the modulation of the interaction according to the chemical composition of the monolayer.
引用
收藏
页码：1 / 7
页数：7
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