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Profiling influences of gene overexpression on heterologous resveratrol production in

Duo Liu,Bingzhi Li,Hong Liu,Xuejiao Guo,Yingjin Yuan

《化学科学与工程前沿（英文）》 2017年 第11卷 第1期   页码 117-125 doi: 10.1007/s11705-016-1601-3

摘要： Metabolic engineering of heterologous resveratrol production in faces challenges as the precursor L-tyrosine is stringently regulated by a complex biosynthetic system. We overexpressed the main gene targets in the upstream pathways to investigate their influences on the downstream resveratrol production. Single-gene overexpression and DNA assembly-directed multigene overexpression affect the production of resveratrol as well as its precursor -coumaric acid. Finally, the collaboration of selected gene targets leads to an optimal resveratrol production of 66.14±3.74 mg·L , 2.27 times higher than the initial production in YPD medium (4% glucose). The newly discovered gene targets expressing phosphoribosylanthranilate isomerase, expressing 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase, and expressing 4-coumaryl-CoA ligase show notable positive impacts on resveratrol production in .

关键词： resveratrol     aromatic amino acid     DNA assembly     metabolic engineering     gene overexpression    

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Resveratrol reduces intracellular reactive oxygen species levels by inducing autophagy through the AMPK-mTOR

Jun Song, Yeping Huang, Wenjian Zheng, Jing Yan, Min Cheng, Ruxing Zhao, Li Chen, Cheng Hu, Weiping Jia

《医学前沿（英文）》 2018年 第12卷 第6期   页码 697-706 doi: 10.1007/s11684-018-0655-7

摘要：

Oxidative stress induced by free fatty acid aggravates endothelial injury, which leads to diabetic cardiovascular complications. Reduction of intracellular oxidative stress may attenuate these pathogenic processes. The dietary polyphenol resveratrol reportedly exerts potential protective effects against endothelial injury. This study determined whether resveratrol can reduce the palmitic acid (PA)-induced generation of reactive oxygen species (ROS) and further explored the underlying molecular mechanisms. We found that resveratrol significantly reduced the PA-induced endothelial ROS levels in human aortic endothelial cells. Resveratrol also induced endothelial cell autophagy, which mediated the effect of resveratrol on ROS reduction. Resveratrol stimulated autophagy via the AMP-activated protein kinase (AMPK)-mTOR pathway. Taken together, these data suggest that resveratrol prevents PA-induced intracellular ROS by autophagy regulation via the AMPK-mTOR pathway. Thus, the induction of autophagy by resveratrol may provide a novel therapeutic candidate for cardioprotection in metabolic syndrome.

关键词： resveratrol     reactive oxygen species     AMPK     mTOR     autophagy    

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Resveratrol promotes the survival and neuronal differentiation of hypoxia-conditioned neuronal progenitor

Yao Yao, Rui Zhou, Rui Bai, Jing Wang, Mengjiao Tu, Jingjing Shi, Xiao He, Jinyun Zhou, Liu Feng, Yuanxue Gao, Fahuan Song, Feng Lan, Xingguo Liu, Mei Tian, Hong Zhang

《医学前沿（英文）》 2021年 第15卷 第3期   页码 472-485 doi: 10.1007/s11684-021-0832-y

摘要： Hypoxia conditioning could increase the survival of transplanted neuronal progenitor cells (NPCs) in rats with cerebral ischemia but could also hinder neuronal differentiation partly by suppressing mitochondrial metabolism. In this work, the mitochondrial metabolism of hypoxia-conditioned NPCs (hcNPCs) was upregulated via the additional administration of resveratrol, an herbal compound, to resolve the limitation of hypoxia conditioning on neuronal differentiation. Resveratrol was first applied during the neuronal differentiation of hcNPCs and concurrently promoted the differentiation, synaptogenesis, and functional development of neurons derived from hcNPCs and restored the mitochondrial metabolism. Furthermore, this herbal compound was used as an adjuvant during hcNPC transplantation in a photothrombotic stroke rat model. Resveratrol promoted neuronal differentiation and increased the long-term survival of transplanted hcNPCs. 18-fluorine fluorodeoxyglucose positron emission tomography and rotarod test showed that resveratrol and hcNPC transplantation synergistically improved the neurological and metabolic recovery of stroke rats. In conclusion, resveratrol promoted the neuronal differentiation and therapeutic efficiency of hcNPCs in stroke rats via restoring mitochondrial metabolism. This work suggested a novel approach to promote the clinical translation of NPC transplantation therapy.

关键词： neuronal progenitor cells     resveratrol     cerebral ischemia     neuronal differentiation     mitochondrial metabolism     positron emission tomography    

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Expression of integrin in hepatic fibrosis and intervention of resveratrol

Jianye WU, Chuanyong GUO, Jun LIU, Xuanfu XUAN

《医学前沿（英文）》 2009年 第3卷 第1期   页码 100-107 doi: 10.1007/s11684-009-0013-x

摘要： The aim of this study was to explore the expression of integrin-β1 in different stages of hepatic fibrosis and intervention of resveratrol as well as the way by which integrin-β1 promoted hepatic fibrosis. Hepatic fibrosis models of male Sprague Dawley (SD) rats were created and intragastric administration of resveratrol was given in low (40 mg/kg), middle (120 mg/kg) and high (200 mg/kg) dose groups. The expression of integrin-β1, tumor growth factor-β (TGF-β) and tissue inhibitor of metalloproteinase-1 (TIMP-1) in different stages of hepatic fibrosis was detected by using RT-PCR. The expression of hexadecenoic acid (HA) and precollagen III (pc III) was assayed by radioimmunoassay. The expression of integrin-β1, TGF-β and TIMP-1 was determined in each group. Liver function and pathological sections of each group in different stages of hepatic fibrosis was tested to judge the therapeutic efficacy of resveratrol at different doses. The expression of integrin-β1 in normal control group was low and steady and was not increased as the development of hepatic fibrosis, but it is increased in other groups. The expression levels of integrin-β1 in the model control group (0.878±0.03, <0.01) and low dose group (0.855±0.04, <0.01) were higher than other groups, but there was no difference between model control group and low dose group ( >0.05). The expression levels of integrin-β1 and TGF-β in middle dose group and high dose group were higher than other groups ( <0.01). The expression levels of integrin-β1 and TGF-β in model control group and low dose group were lower than the normal control group ( <0.01). The expression levels of TIMP-1 in the model control and low dose groups were higher than the other groups ( <0.01). The expression levels of TIMP-1 in the middle dose group and the high dose group were lower than the normal control group ( <0.01). The expression of integrin-β1 existed in all stages of hepatic fibrosis of SD rats, and it was increased as the development of hepatic fibrosis. The expression of TGF-β and TIMP-1 was consistent with that of integrin-β1 in different stages of hepatic fibrosis. Resveratrol could improve the degree of hepatic fibrosis of SD rats and decrease the expression of integrin-β1 markedly at a dose of 120 mg/kg.

关键词： liver fibrosis     integrin-β1     resveratrol     tumor growth factor-β     tissue inhibitor of metalloproteinase-1    

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标题 作者 时间 类型 操作

Profiling influences of gene overexpression on heterologous resveratrol production in

Duo Liu,Bingzhi Li,Hong Liu,Xuejiao Guo,Yingjin Yuan

期刊论文

Resveratrol reduces intracellular reactive oxygen species levels by inducing autophagy through the AMPK-mTOR

Jun Song, Yeping Huang, Wenjian Zheng, Jing Yan, Min Cheng, Ruxing Zhao, Li Chen, Cheng Hu, Weiping Jia

期刊论文

Resveratrol promotes the survival and neuronal differentiation of hypoxia-conditioned neuronal progenitor

Yao Yao, Rui Zhou, Rui Bai, Jing Wang, Mengjiao Tu, Jingjing Shi, Xiao He, Jinyun Zhou, Liu Feng, Yuanxue Gao, Fahuan Song, Feng Lan, Xingguo Liu, Mei Tian, Hong Zhang

期刊论文

Expression of integrin in hepatic fibrosis and intervention of resveratrol

Jianye WU, Chuanyong GUO, Jun LIU, Xuanfu XUAN

期刊论文