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Metabolomic Study of Endogenous Steroid Hormones in Tissues of Ovarian Cancer Patients by Gas Chromatography−Tandem Mass Spectrometry

Other Title
액체 크로마토그래피 텐덤 질량 분석기를 이용한 감마 하이드록시낙산 경구 투여 마우스 모델 소변에서의 스테로이드 호르몬 프로파일 분석
Authors
박, 형진
Department
대학원 의생명과학과
Degree
Master (2018)
Abstract
Endogenous steroid hormones have been reported as an important role to metabolism control, inflammation regulation and development of reproductive organ. These endogenous steroid hormones are related with human disease such as breast, ovary cancer. In this study profiling method of endogenous steroid hormones as trimethylsilyl (TMS) derivative in ovarian cancer tissue was developed by high resolution gas chromatography–tandem mass spectrometry (GC−MS/MS). Characteristic ions in MRM mode with electron ionization (EI) permitted the accurate and selective analysis of endogenous steroid hormones. In optimal conditions, this method showed good linearity (r ≥ 0.9989) with limit of detection (LOD) of 2.5−48.5 pg and limit of quantification (LOQ) of 8.5−161.6 pg. The repeatabilities of intra− and inter−days as a percentage of relative standard deviation (% RSD) varied from 0.2−10.0 (% RSD), respectively accuracy as a percentage relative error (% RE) was from -8.2 to 8.2 (% RE). The recovery ranged from 87.7 ± 6.4 % to 99.7 ± 9.7 %. When applied to tissues of 11 ovarian cancer patients, total eight endogenous steroid hormones of dehydroepiandrosterone, estradiol, testosterone, pregnenolone, estriol, progesterone, cortisone and cortisol were identified and determined by GC−MS/MS. Therefore, the present endogenous steroid hormone profiling method in ovarian tissue by GC−MS/MS will be useful for the monitoring and screening of ovarian cancer in clinical fields.
Keywords
Endogenous steroid hormoneProfiling analysisTrimethylsilylationGas chromatography–tandem mass spectrometryOvarian cancer tissue
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Theses > Graduate School of Biomedical Sciences > Master
AJOU Authors
박, 형진
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