Bactericidal effect of lauric Acid-Loaded PCL-PEG-PCL nano-sized micelles on skin commensal propionibacterium acnes

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Title:	Bactericidal effect of lauric Acid-Loaded PCL-PEG-PCL nano-sized micelles on skin commensal propionibacterium acnes
Authors:	黃俊銘;Tran, Thi-Quynh-Mai;Hsieh, Ming-Fa;Chang, Keng-Lun;Pho, Quoc-Hue;Nguyen, Van-Cuong;Cheng, Ching-Yi;Huang, Chun-Ming
Contributors:	生醫理工學院生醫科學與工程學系
Keywords:	Bacteria;Differential scanning calorimetry;Infrared spectroscopy;Micelles;Molecular weight;Nanostructure;Nuclear magnetic resonance;Polymers;Propionibacterium acnes
Date:	2016-08-27
Issue Date:	2026-04-23 11:15:13 (UTC+8)
Publisher:	MDPI AG;Switzerland: MDPI AG
Abstract:	摘要： Acne is the over growth of the commensal bacteria Propionibacterium acnes (P. acnes) on human skin. Lauric acid (LA) has been investigated as an effective candidate to suppress the activity of P. acnes. Although LA is nearly insoluble in water, dimethyl sulfoxide (DMSO) has been reported to effectively solubilize LA. However, the toxicity of DMSO can limit the use of LA on the skin. In this study, LA-loaded poly(ɛ-caprolactone)-poly(ethylene glycol)-poly(ɛ-caprolactone) micelles (PCL-PEG-PCL) were developed to improve the bactericidal effect of free LA on P. acnes. The block copolymers mPEG-PCL and PCL-PEG-PCL with different molecular weights were synthesized and characterized using 1H Nuclear Magnetic Resonance spectroscopy (1H NMR), Fourier-transform infrared spectroscopy (FT-IR), Gel Permeation Chromatography (GPC), and Differential Scanning Calorimetry (DSC). In the presence of LA, mPEG-PCL diblock copolymers did not self-assemble into nano-sized micelles. On the contrary, the average particle sizes of the PCL-PEG-PCL micelles ranged from 50–198 nm for blank micelles and 27–89 nm for LA-loaded micelles. The drug loading content increased as the molecular weight of PCL-PEG-PCL polymer increased. Additionally, the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) of free LA were 20 and 80 μg/mL, respectively. The MICs and MBCs of the micelles decreased to 10 and 40 μg/mL, respectively. This study demonstrated that the LA-loaded micelles are a potential treatment for acne. 其他題名： Polymers (Basel) 出版者： Switzerland: MDPI AG 出版日期： 2016-08-27 出處： Polymers, 2016-08, Vol.8 (9), p.321-321 資源來源： Publicly Available Content Database 版權： Copyright MDPI AG 2016 版權： 2016 by the authors. 2016 識別號： ISSN: 2073-4360 識別號： EISSN: 2073-4360 識別號： DOI: 10.3390/polym8090321 識別號： PMID: 30974595
Appears in Collections:	[Department of Biomedical Sciences and Engineering ] journal & Dissertation

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