Molecular Mapping of Sebaceous Squalene by Ambient Mass Spectrometry

doi:10.1021/acs.analchem.1c03983

CNU IR > Pharmacy and Science > Dept. of Food & Drug Industry and Inspective Technology > Periodical Articles > Item 310902800/34314

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/34314

Title:	Molecular Mapping of Sebaceous Squalene by Ambient Mass Spectrometry
Authors:	Cho, Yi-Tzu Su, Hung Wu, Ching-Ying Huang, Tiao-Lai Jeng, Jingyueh Huang, Min-Zong Wu, Deng-Chyang Shiea, Jentaie
Contributors:	Natl Sun Yat Sen Univ, Dept Chem Kaohsiung Med Univ, Coll Med, Dept Dermatol Kaohsiung Municipal Tatung Hosp, Dept Dermatol Chang Gung Univ Sci & Technol, Dept Cosmet Sci Chang Gung Mem Hosp, Kaohsiung Med Ctr, Dept Psychiat Chang Gung Univ, Coll Med Kaohsiung Chang Gung Mem Hosp, Dept Med Res, Genom & Prote Core Lab, Chia Nan Univ Pharm & Sci, Dept Med Chem Kaohsiung Med Univ Hosp, Dept Internal Med, Div Gastroenterol, Regenerat Med & Cell Therapy Res Ctr Kaohsiung Med Univ, Coll Med, Fac Med, Dept Med Yuh Ing Jr Coll Hlth Care & Management, Dept Cosmet Applicat & Management Kaohsiung Med Univ, Res Ctr Environm Med Kaohsiung Med Univ, Dept Med & Appl Chem
Keywords:	HUMAN SKIN SURFACE LIPIDS CHROMATOGRAPHY LIQUID SEBUM AGE
Date:	2021
Issue Date:	2023-11-11 11:42:49 (UTC+8)
Publisher:	AMER CHEMICAL SOC
Abstract:	Squalene (SQ), a highly unsaturated sebaceous lipid, plays an important role in protecting human skin. To better understand the role of SQ in clinical medicine, an efficient analytical approach is needed to comprehensively study the distribution of SQ on different parts of the skin. In this study, sebaceous lipids were collected from different epidermal areas of a volunteer with sampling probes. Thermal desorption-electrospray ionization/mass spectrometry (TD-ESI/MS) was then used to characterize the lipid species on the probes, and each TD-ESI/MS analysis was completed within a few seconds without any sample pretreatment. The molecular mapping of epidermal squalene on whole-body skin was rendered by scaling the peak area of the extracted ion current (EIC) of SQ based on a temperature color gradient, where colors were assigned to the 1357 sampling locations on a 3D map of the volunteer. The image showed a higher SQ distribution on the face than any other area of the body, indicating the role of SQ in protecting facial skin. The results were in agreement with previous studies using SQ as a marker to explore sebaceous activity. The novelty and significance of this work are concluded as two points: (1) direct and rapid detection of all major dasses of sebaceous lipids, including the unsaturated hydrocarbons (SQ) and nonpolar lipids (e.g., cholesterol). The results are unique compared to other conventional and ambient ionization mass spectrometry methods and (2) this is the first study to analyze SQ distribution on the whole-body skin by a high-throughput approach.
Relation:	ANAL CHEM, v.93, n.49, pp.16608-16617
Appears in Collections:	[Dept. of Food & Drug Industry and Inspective Technology] Periodical Articles

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