Eun Hye Jung, Ji Sun Hwang, Mi Youn Kwon, Kyoung Hong Kim, Sang min Kim, Inn Oc Han
언어
영어(ENG)
URL
https://www.earticle.net/Article/A294728
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원문정보
초록
영어
Macrophages foam cell formation is characterized by lipid accumulation and plays a key role in early atherogenesis. In this study, we showed that glucosamine dose dependently stimulated lipid accumulation in RAW 264.7 cells. In addition, glucosamine synergistically promoted oleic acid-induced lipid accumulation. Sterol regulatory element-binding proteins (SREBPs) have been described as key transcription factors for lipogenic gene induction. Glucosamine enhanced DNA binding activity on SRE/E-box of SREBP-1 and mRNA expression of this target genes Acetyl-CoA carboxylase (ACC) and Fatty acid synthas (FAS). Since SREBP transcription activity is regulated by mammalian target of rapamycin (mTOR), we examined the effect of mTORC1-specific inhibitor, rapamycin on glucosamine-induced lipid accumulation; Glucosamine-induced lipid accumulation was suppressed by rapamycin. Although glucosamine promoted the endoplasmic reticulum stress marker, glucose-regulated protein-78 (GRP78) protein and mRNA level, glucosamine-induced lipid accumulation dose not suppressed by ER stress inhibitor 4-phenylbutyric acid (PBA). This suggest that glucosamine-induced lipid accumulation were not likely mediated with ER stress.
저자
Eun Hye Jung [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
Ji Sun Hwang [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
Mi Youn Kwon [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
Kyoung Hong Kim [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
Sang min Kim [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
Inn Oc Han [ Department of Physiology and Biophysics, College of Medicine, Inha University ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.