检索结果-南通市图书馆

transcriptional regulation of Urokinase Receptor in High-(95D) and Low-metastatic (95C) Human Lung Cancer Cells

在线全文

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2004年第6期36卷 405-411页

作者： Chun-Yang LI, Li TAN, Guo-Jing ZHANG, Ping LI, Chang TONG, Jing FAN, and Yun-Song ZHU* Key Laboratory, the Education Ministry, Department of Biochemistry and Molecular Biology, Shanghai Medical College,Fudan University, Shanghai 200032, China Key Laboratory the Education Ministry Department of Biochemistry and Molecular Biology Shanghai Medical College Fudan UniversityShanghai 200032 China

To study the transcriptional regulation of urokinase receptor (uPAR) in high- (95D) and low-metastatic (95C) human lung cancer cells, we performed PCR to amplify 2238 bp uPAR promoter from 95C and 95D cells. According to the results of sequencing, five different bases are found in uPAR promoter between 95C and 95D cells. The results of luciferase activity assay showed that these differences have no significant effect on the uPAR promoter activity. Based on a normal uPAR promoter, progressive truncated mutants were constructed. The transient transfection/reporter assay showed that the promoter region from –136 to +9 may interact with relevant nuclear factors, which result in different levels of uPAR expression between 95C and 95D cells.

关键词： uPAR promoter transcriptional regulation

transcriptional regulation of Lipid Catabolism during Seedling Establishment

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2020年第7期13卷 984-1000页

作者： Guangqin Cai Sang-Chul Kim Jianwu Li Yongming Zhou Xuemin Wang National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Department of Biology University of MissouriSt.LouisMO 63121USA Donald Danforth Plant Science Center St.LouisMO 63132USA Henan Agricultural University ZhengzhouHenan 450002China

Lipid catabolism in germinating seeds provides energy and substrates for initial seedling growth,but how this process is regulated is not well understood.Here,we show that an AT-hook motif-containing nuclear localized(AHL)protein regulates lipid mobilization and fatty acid p-oxidation during seed germination and seedling establishment.AHL4 was identified to directly interact with the lipid mediator phosphatidic acid(PA).Knockout(KO)of AHL4 enhanced,but overexpression(OE)of AHL4 attenuated,triacylglycerol(TAG)degradation and seedling growth.Normal seedling growth of the OE lines was restored by sucrose supplementation to the growth medium.AHL4-OE seedlings displayed decreased expression of genes involved in TAG hydrolysis and fatty acid oxidation,whereas the opposite was observed in AHL4-KOs.These genes contained AHL4-binding cis elements,and AHL4 was shown to bind to the promoter regions of genes encoding the TAG lipases SDP1 and DALL5 and acyl-thioesterase KAT5.These AHL4-DNA interactions were suppressed by PA species that bound to AHL4.These results indicate that AHL4 suppresses lipid catabolism by repressing the expression of specific genes involved in TAG hydrolysis and fatty acid oxidation,and that PA relieves AHL4-mediated suppression and promotes TAG degradation.Thus,AHL4 and PA together regulate lipid degradation during seed germination and seedling establishment.

关键词： lipid catabolism lipid regulation phosphatidic acid seed germination seedling establishment transcriptional regulation

transcriptional and post‑transcriptional regulation of RNAi‑related gene expression during plant‑virus interactions

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Stress Biology 2022年第1期2卷 287-298页

作者： Qian Gong Yunjing Wang Zhenhui Jin Yiguo Hong Yule Liu MOE Key Laboratory of Bioinformatics and Center for Plant Biology School of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life Sciences Beijing 100084China Research Centre for Plant RNA Signaling College of Life and Environmental SciencesHangzhou Normal UniversityHangzhou 311121China School of Science and the Environment University of WorcesterWorcester WR26AJUK School of Life Sciences University of WarwickCoventry CV47ALUK

As sessile organisms,plants encounter diverse invasions from pathogens including viruses.To survive and thrive,plants have evolved multilayered defense mechanisms to combat virus infection.RNAi,also known as RNA silencing,is an across-kingdom innate immunity and gene regulatory machinery.Molecular framework and crucial roles of RNAi in antiviral defense have been well-characterized.However,it is largely unknown that how RNAi is transcriptionally regulated to initiate,maintain and enhance cellular silencing under normal or stress conditions.Recently,insights into the transcriptional and post-transcriptional regulation of RNAi-related genes in different physiological processes have been emerging.In this review,we integrate these new findings to provide updated views on how plants modulate RNAi machinery at the(post-)transcriptional level to respond to virus infection.

关键词： transcriptional regulation RNAi Gene expression Virus Plant immunity

transcriptional regulation and Signaling in Phosphorus Starvation: What About Legumes?

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2008年第10期50卷 1213-1222页

作者： Oswaldo Valds-López Georgina Hernndez Centro de Ciencias Genómicas Centre for Genomic Sciences Universidad Nacional Autónoma de Mxico National University of MexicoCuernavaca Morelos 62210 Mxico

The availability of soil phosphorus （P）, an essential element, is one of the most important requirements for plant growth and crop production. The morphological and physiological adaptations evolved by plants to cope with P starvation have been well characterized. Several P deficiency plant responses are regulated at the transcriptional level. Microarray analysis has generated valuable information on global gene expression in Arabidopsis thaliana grown under P-stress. Despite the identification of P responsive genes, little is known about the regulation of gene expression changes. Four transcription factors, PHRI, WRKY75, ZAT6 and BHLH32, involved in P starvation signaling have been characterized in Arabidopsis, and signaling pathways are deciphered. This review analyzes the current knowledge of transcriptional regulation of P starvation responses in Arabidopsis vis-a-vis legumes such as lupine, common bean and Medicago truncatula. The knowledge on regulatory and signaling mechanisms involved in P acquisition and use in legumes will be useful for improvement of these crops, which account for a large proportion of the world＇s crop production, providing good nutritional quality feed and food.

关键词： legumes phosphorus starvation responses P starvation signaling pathways transcriptional regulation transcription factors.

Molecular Characterization, Expression Pattern and transcriptional regulation of Figla During Gonad Development in Japanese Founder (Paralichthys olivaceus)

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2022年第4期21卷 1037-1050页

作者： QU Jiangbo LI Rui LIU Yuxiang SUN Minmin YAN Weijie LIU Jinxiang WANG Xubo ZHANG Quanqi MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life SciencesOcean University of ChinaQingdao 266003China Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for MarineScience and TechnologyQingdao 266237China

The factor in the germline alpha(figla), as a member of the basic helix-loop-helix family, has been reported to be involved in ovary development in mammals and teleosts. However, the regulatory mechanisms of figla in teleosts remain unclear. Here,figla in P. olivaceus(Pofigla) was characterized with encoding a 202 amino acid protein that contains a conserved basic region and helix-loop-helix(HLH) domain. Amino acids alignment and synteny analysis revealed that Pofigla was conserved with the orthologous gene sequences in other vertebrates. The results of qRT-PCR showed Pofigla was maternally inherited during embryonic development. For tissue distribution, Pofigla showed a sexually dimorphic gene expression in the gonad of different genders, with a higher expression in ovary than in testis. In situ hybridization(ISH) results demonstrated Pofigla was specifically expressed in germ cells including oocytes, spermatogonia and spermatocytes. By screening and analyzing two proximal regions(-2966/-2126 and-772/-444) with high promoter activity, we found SOX5, LEF1, FOXP1 and GATA1 may play important roles in the transcriptional regulation of Pofigla. Furthermore, we observed the co-localization between Figla and LEF1 in HEK 293T cells. And the significant up-regulation effect of the canonical Wnt signaling pathway on the expression of Pofigla was found in cultured ovarian cells. This study provided the first evidence that figla not only has an important function in ovary development, but also plays some potential roles in testis development and/or male germ cell differentiation during early testis development in P. olivaceus. The results provide valuable reference in exploring the regulatory network of figla in teleost.

关键词： figla transcriptional regulation Wnt signaling pathway gonad development Paralichthys olivaceus

transcriptional regulation of oil biosynthesis inseed plants: Current understanding, applications,and perspectives

在线全文

学校读者我要写书评

暂无评论

Plant Communications 2022年第5期3卷 19-37页

作者： Yuzhou Yang Que Kong Audrey R.Q.Lim Shaoping Lu Hu Zhao Liang Guo Ling Yuan Wei Ma School of Biological Sciences Nanyang Technological UniversitySingapore 637551Singapore National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China Hubei Hongshan Laboratory Wuhan 430070China Department of Plant and Soil Sciences Kentucky Tobacco Research and Development CenterUniversity of KentuckyLexingtonKY 40546USA Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China

Plants produce and accumulate triacylglycerol(TAG)in their seeds as an energy reservoir to support the processes of seed germination and seedling development.Plant seed oils are vital not only for the human diet but also as renewable feedstocks for industrial use.TAG biosynthesis consists of two major steps:de novo fatty acid biosynthesis in the plastids and TAG assembly in the endoplasmic reticulum.The latest advances in unraveling transcriptional regulation have shed light on the molecular mechanisms of plant oil biosynthesis.We summarize recent progress in understanding the regulatory mechanisms of wellcharacterized and newly discovered transcription factors and other types of regulators that control plant fatty acid biosynthesis.The emerging picture shows that plant oil biosynthesis responds to developmental and environmental cues that stimulate a network of interacting transcriptional activators and repressors,which in turn fine-tune the spatiotemporal regulation of the pathway genes.

关键词： plant oil biosynthesis oil accumulation seed development environmental and developmental signals transcription factor transcriptional regulation

transcriptional regulation of endothelial dysfunction in atherosclerosis:an epigenetic perspective

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Journal of Biomedical Research 2014年第1期28卷 47-52页

作者： Yong Xu Key Laboratory of Cardiovascular Disease and Molecular Intervention Department of PathophysiologyNanjing Medical University

Atherosclerosis is a progressive human pathology that encompasses several stages of development. Endothelial dysfunction represents an early sign of lesion within the vasculature. A number of risk factors for atherosclero- sis, including hyperlipidemia, diabetes, and hypertension, target the vascular endothelium by re-programming its transcriptome. These profound alterations taking place on the chromatin rely on the interplay between sequence specific transcription factors and the epigenetic machinery. The epigenetic machinery, in turn, tailor individual transcription events key to atherogenesis to intrinsic and extrinsic insults dictating the development of atheroscle- rotic lesions. This review summarizes our current understanding of the involvement of the epigenetic machinery in endothelial injury during atherogenesis.

关键词： Atherosclerosis transcriptional regulation endothelial injury epigenetics

Long non-coding RNAs with essential roles in neurodegenerative disorders

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第6期19卷 1212-1220页

作者： Wandi Xiong Lin Lu Jiali Li Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province Kunming Institute of Zoology the Chinese Academy of Sciences Tsinghua-Peking Center for Life Sciences National Institute on Drug Dependence Peking University PKU/McGovern Institute for Brain Research Peking University Institute of Mental Health National Clinical Research Center for Mental Disorders Key Laboratory of Mental Health and Peking University Sixth Hospital Peking University

Recently, with the advent of high-resolution and high-throughput sequencing technologies, an increasing number of long non-coding RNAs(lncRNAs) have been found to be involved in the regulation of neuronal function in the central nervous system with specific spatiotemporal patterns, across different neurodegenerative diseases. However, the underlying mechanisms of lncRNAs during neurodegeneration remain poorly understood. This review provides an overview of the current knowledge of the biology of lncRNAs and focuses on introducing the latest identified roles, regulatory mechanisms, and research status of lncRNAs in Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, and amyotrophic lateral sclerosis. Finally, this review discusses the potential values of lncRNAs as diagnostic biomarkers and therapeutic targets for neurodegenerative diseases, hoping to provide broader implications for developing effective treatments.

关键词： Alzheimer’s disease amyotrophic lateral sclerosis biomarker Huntington’s disease long non-coding RNAs neurodegenerative diseases Parkinson’s disease therapy transcriptional regulation translational regulation

Antagonistic MADS-box transcription factors SEEDSTICK and SEPALLATA3 form a transcriptional regulatory network that regulates seed oil accumulation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第1期66卷 121-142页

作者： Shuangcheng He Yuanchang Min Zijin Liu Fang Zhi Rong Ma Ankang Ge Shixiang Wang Yu Zhao Danshuai Peng Da Zhang Minshan Jin Bo Song Jianjun Wang Yuan Guo Mingxun Chen State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production National Yangling Agricultural Biotechnology&Breeding CenterShaanxi Key Laboratory of Crop HeterosisCollege of AgronomyNorthwest A&F UniversityYangling 712100China State Key Laboratory for Crop Stress Resistance and High‐Efficiency Production Shaanxi Key Laboratory of AppleCollege of HorticultureNorthwest A&F UniversityYangling 712100China

transcriptional regulation is essential for balancing multiple metabolic pathways that influence oil accumulation in seeds.Thus far,the transcriptional regulatory mechanisms that govern seed oil accumulation remain largely unknown.Here,we identified the transcriptional regulatory network composed of MADS-box transcription factors SEEDSTICK(STK)and SEPALLATA3(SEP3),which bridges several key genes to regulate oil accumulation in seeds.We found that STK,highly expressed in the developing embryo,positively regulates seed oil accumulation in Arabidopsis(Arabidopsis thaliana).Furthermore,we discovered that SEP3 physically interacts with STK in vivo and in vitro.Seed oil content is increased by the SEP3 mutation,while it is decreased by SEP3 overexpression.The chromatin immunoprecipitation,electrophoretic mobility shift assay,and transient dual-luciferase reporter assays showed that STK positively regulates seed oil accumulation by directly repressing the expression of MYB5,SEP3,and SEED FATTY ACID REDUCER 4(SFAR4).Moreover,genetic and molecular analyses demonstrated that STK and SEP3 antagonistically regulate seed oil production and that SEP3 weakens the binding ability of STK to MYB5,SEP3,and SFAR4.Additionally,we demonstrated that TRANSPARENT TESTA 8(TT8)and ACYL-ACYL CARRIER PROTEIN DESATURASE 3(AAD3)are direct targets of MYB5 during seed oil accumulation in Arabidopsis.Together,our findings provide the transcriptional regulatory network antagonistically orchestrated by STK and SEP3,which fine tunes oil accumulation in seeds.

关键词： seed oil accumulation SEP3 STK transcription factor transcriptional regulation