770,563 results match your criteria transcription initiation


Georgian Med News 2021 Mar(312):125-132

Tbilisi State Medical University, Departments of Pharmaceutical Technology and Medical Pharmacology, Georgia.

In the present article is considered antihypertensive and cardioprotective action of epoxieicosatrienoic acids (EETs) analogues and soluble epoxide hydrolase (sEH) inhibitors. Being epoxygenase products of arachidonic acid metabolism EETs provide a wide spectrum of biological activity in different organs implicated in the regulation of arterial pressure, including vascular endothelium (VE), heart and kidney. EETs are acting as autocrine or paracrine agents producing vasodilation, reduction in salt and fluid retention. Read More

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Ultrasensitive ratiometric electrochemiluminescence for detecting atxA mRNA using luminol-encapsulated liposome as effectively amplified signal labels.

Biosens Bioelectron 2021 May 1;186:113263. Epub 2021 May 1.

Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China. Electronic address:

It is an advantageous way to quickly identify the toxicity of Bacillus anthracis (B. anthracis) by detecting the transcription product of the atxA gene. Herein, a novel ultrasensitive ratiometric electrochemiluminescence (ECL) biosensor with competitive mechanism and double amplified signal ways was proposed for detecting the atxA mRNA. Read More

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Targeting the transcription cycle and RNA processing in cancer treatment.

Curr Opin Pharmacol 2021 May 5;58:69-75. Epub 2021 May 5.

Center for Research on Reproduction & Women's Health, University of Pennsylvania, Philadelphia, PA, USA; Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA, USA. Electronic address:

The transcriptional program and RNA splicing machinery are highly and frequently dysregulated in human cancers due to genomic and epigenomic alterations during tumorigenesis. This leads to cancer-specific dependencies on components of the transcriptional program and RNA splicing machinery, providing alternative and targetable 'Achilles' heels' for cancer treatment in the clinic. To target these vulnerabilities in cancer cells, potent and specific transcriptional CDK inhibitors and chemical compounds that impair splicing have been developed and evaluated in preclinical cancer models. Read More

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Cytotoxicity and anti-inflammatory effect of a novel diminazene aceturate derivative in bovine mammary epithelial cells.

Res Vet Sci 2021 Apr 22;137:102-110. Epub 2021 Apr 22.

Key Laboratory of the Ministry of Education for the Conservation and Utilization of Special Biological Resources of Western China, Ningxia University, Yinchuan, Ningxia 750021, China. Electronic address:

Diminazene aceturate (DA) has been used in the treatment of infections of trypanosomes in animals. Interestingly, its anti-inflammatory effect has recently gained increased interests. However, DA has been reported to have toxic side effects that limit its application. Read More

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Enhancing osteogenesis of adipose-derived mesenchymal stem cells using gold nanostructure/peptide-nanopatterned graphene oxide.

Colloids Surf B Biointerfaces 2021 Apr 29;204:111807. Epub 2021 Apr 29.

School of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea; Integrative Research Center for Two-Dimensional Functional Materials, Institute of Interdisciplinary Convergence Research, Chung-Ang University, Seoul, Republic of Korea. Electronic address:

Graphene derivatives are highly promising materials for use in stem-cell-based regenerative therapies, particularly for bone regeneration. Herein, we report a graphene oxide (GO)-based hybrid platform (GOHP) that is highly effective for guiding the osteogenesis of human adipose-derived mesenchymal stem cells (hAMSCs). A GO-coated indium tin oxide (ITO) substrate was electrochemically modified with Au nanostructures (GNSs), following which a cysteine-modified quadruple-branched arginine-glycine-aspartic acid was self-assembled on the ITO-GO-GNS hybrid via Au-S bonds. Read More

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Environmentally relevant concentrations of triclocarban affect morphological traits and melanogenesis in zebrafish larvae.

Aquat Toxicol 2021 Apr 24;236:105842. Epub 2021 Apr 24.

Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via Balzarini 1, 64100, Teramo, Italy. Electronic address:

Human activity is responsible for producing several chemical compounds, which contaminate the aquatic environment and adversely influence the survival of aquatic species and indirectly human health. Triclocarban (TCC) belongs to the category of emerging pollutants and its presence in aquatic environment is justified by its wide use as antimicrobial agent in personal care products. The concern about this chemical is due to the risk of persistence in water and soils and bioaccumulation, which contributes to human exposition through the contaminated food consumption. Read More

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Loss of FOXO Transcription Factors in the Liver Mitigates Stress-Induced Hyperglycemia.

Mol Metab 2021 May 5:101246. Epub 2021 May 5.

Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; Department of Physiology, Perelman School of Medicine, University of Pennsylvania. Electronic address:

Objective: Stress-induced hyperglycemia is associated with poor outcomes in nearly all critical illnesses. This acute elevation in glucose after injury or illness is associated with increased morbidity and mortality including multiple organ failure. Stress-induced hyperglycemia is often attributed to insulin resistance as controlling glucose levels via exogenous insulin improves outcomes, but mechanisms are unclear. Read More

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The miR166- SlHB15A Regulatory Module controls Ovule Development and Parthenocarpic Fruit Set under Adverse Temperatures in Tomato.

Mol Plant 2021 May 5. Epub 2021 May 5.

Institute of Plant Sciences Paris-Saclay, INRAE, CNRS, Université Paris-Saclay, Orsay 91405, France. Electronic address:

Fruit set is inhibited by adverse temperatures, with consequences on yield. We isolated a tomato mutant producing fruits under non-permissive hot temperatures and identified the causal gene as SlHB15A, belonging to class-III homeodomain leucine-zipper transcription factors (HD-ZipIII). SlHB15A loss-of-function mutants display aberrant ovule development that mimics transcriptional changes occurring in fertilized ovules and leads to parthenocarpic fruit set under optimal and non-permissive temperatures, in field and glasshouse conditions. Read More

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Synthesis and anti-proliferation activity of mogrol derivatives bearing quinoline and triazole moieties.

Bioorg Med Chem Lett 2021 May 5:128090. Epub 2021 May 5.

Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization, Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin 541006, China. Electronic address:

A series of novel derivatives based on mogrol were designed and synthesized in attempt to improve anti-lung cancer activity. The cytotoxicity against human lung cancer cells including A549 and NCI-H460 were performed by Cell Counting Kit-8 (CCK8) assay in vitro. The screening result showed that compound 8f exhibited the strongest activity with an IC value of 4. Read More

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A basic helix-loop-helix transcription factor CabHLH113 positively regulate pepper immunity against Ralstonia solanacearum.

Microb Pathog 2021 May 5:104909. Epub 2021 May 5.

Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, People's Republic of China; College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, People's Republic of China. Electronic address:

Pepper's (Capsicum annum) response to bacterial pathogen Ralstonia solanacearm inoculation (RSI) and abiotic stresses is known to be synchronized by transcriptional network; however, related molecular mechanisms need extensive experimentation. We identified and characterized functions of CabHLH113 -a basic helix-loop-helix transcription factor-in pepper immunity to R. solanacearum infection. Read More

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XRCC2 repairs mitochondrial DNA damage and fuels malignant behavior in hepatocellular carcinoma.

Cancer Lett 2021 May 5. Epub 2021 May 5.

Department of Liver Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Electronic address:

The effects of DNA damage repair (DDR) and mitochondrial dysfunction associated with HCC have been investigated, but the functional role of mitochondrial DDR in HCC remains elusive. We studied the DDR genes and identified XRCC2 as a potential prognostic marker for HCC. XRCC2 overexpression was detected in HCC cells and shown to promote the malignant behavior of cancer cells. Read More

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Cryo-EM: a new dawn in thyroid biology.

Mol Cell Endocrinol 2021 May 5:111309. Epub 2021 May 5.

University of Ljubljana, Faculty of Medicine, Institute of Biochemistry and Molecular Genetics, Vrazov trg 2, 1000, Ljubljana, Slovenia.

The thyroid gland accumulates the rare dietary element iodine and incorporates it into iodinated thyroid hormones, utilising several tightly regulated reactions and molecular mechanisms. Thyroid hormones are essential in vertebrates and play a central role in many biological processes, such as development, thermogenesis and growth. The control of these functions is exerted through the binding of hormones to nuclear thyroid hormone receptors that rule the transcription of numerous metabolic genes. Read More

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Sar1b mutant mice recapitulate gastrointestinal abnormalities associated with chylomicron retention disease.

J Lipid Res 2021 May 5:100085. Epub 2021 May 5.

Research Center, CHU Ste-Justine; Departments of Pharmacology & Physiology,; Nutrition. Electronic address:

Chylomicron retention disease (CRD) is an autosomal recessive disorder associated with biallelic Sar1b mutations leading to defects in intracellular chylomicron (CM) trafficking and secretion. To date, a direct cause-effect relationship between CRD and Sar1b mutation has not been established, but genetically modified animal models provide an opportunity to elucidate unrecognized aspects of these mutations. To examine the physiological role and molecular mechanisms of Sar1b function, we generated mice expressing either a targeted deletion or mutation of human Sar1b using the CRISPR/Cas9 system. Read More

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Evaluation of quality and gene expression of goat embryos produced in vivo and in vitro after cryopreservation.

Cryobiology 2021 May 5. Epub 2021 May 5.

Laboratory of Reproductive Biotechniques, Department of Veterinary Medicine, Federal Rural University of Pernambuco, Brazil. Electronic address:

In the present study, we aimed to identify morphological and molecular changes of in vivo and in vitro-produced goat embryos submitted to cryopreservation. In vivo embryos were recovered by transcervical technique from superovulated goats, whereas in vitro produced embryos were produced from ovaries collected at a slaughterhouse. Embryos were frozen by two-steps slow freezing method, which is defined as freezing to -32 °C followed by transfer to liquid nitrogen. Read More

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MYPT1, regulated by miR-19b-3p inhibits the progression of non-small cell lung cancer via inhibiting the activation of wnt/β-catenin signaling.

Life Sci 2021 May 5:119573. Epub 2021 May 5.

Department of Respiration, The First Hospital of Jilin University, Changchun 130021, China. Electronic address:

Aims: Myosin phosphatase targeting protein 1 (MYPT1) was identified to function as a tumor suppressor in several kinds of cancers, but its role and the molecular mechanisms in non-small cell lung cancer (NSCLC) remain undiscovered. Herein, we aimed to reveal MYPT1 expression pattern and role in NSCLC, and investigate the underlying mechanisms.

Main Methods: Sixty-eight paired NSCLC tissues and the adjacent normal tissues were included in this study. Read More

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Ergothioneine mitigates cisplatin-evoked nephrotoxicity via targeting Nrf2, NF-κB, and apoptotic signaling and inhibiting γ-glutamyl transpeptidase.

Life Sci 2021 May 5:119572. Epub 2021 May 5.

Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Cairo 11751, Egypt.

Aim: Cisplatin is a potent chemotherapeutic agent whose therapeutic application is hindered by the associated nephrotoxicity. Cisplatin-evoked nephrotoxicity has been largely attributed to the induction of oxidative stress and inflammatory responses. The current study aimed at investigating the ability of ergothioneine to mitigate cisplatin-evoked nephrotoxicity and to elucidate the underlining molecular mechanisms. Read More

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Dual role of miR-1 in the development and function of sinoatrial cells.

J Mol Cell Cardiol 2021 May 5. Epub 2021 May 5.

Department of Biosciences, Università degli Studi di Milano, Milan, Italy. Electronic address:

miR-1, the most abundant miRNA in the heart, modulates expression of several transcription factors and ion channels. Conditions affecting the heart rate, such as endurance training and cardiac diseases, show a concomitant miR-1 up- or down-regulation. Here, we investigated the role of miR-1 overexpression in the development and function of sinoatrial (SAN) cells using murine embryonic stem cells (mESC). Read More

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Differential expression and role of miR-200 family in multiple tumors.

Anal Biochem 2021 May 5:114243. Epub 2021 May 5.

Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, 563000, PR China. Electronic address:

microRNA (miRNA) can maintain the homeostasis of the human by participating in the regulation of cell proliferation, apoptosis, differentiation, and metabolism. During the entire stage of tumorigenesis, miRNA can maintain the heterogeneity of cancer stem cells by regulating the formation and metastasis of the tumor, which leads to chemotherapy resistance. miR-200 family consists of five members, which can regulate the proliferation, invasion, and migration of cancer cells by inhibiting the transcription of downstream genes (including zinc finger E-box binding homeobox 1 and 2, E-cadherin, N-cadherin, transforming growth factor-β, and cancer stem cell related-proteins). Read More

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A cis-regulatory atlas in maize at single-cell resolution.

Cell 2021 Apr 30. Epub 2021 Apr 30.

Department of Genetics, University of Georgia, Athens, GA 30602, USA. Electronic address:

cis-regulatory elements (CREs) encode the genomic blueprints of spatiotemporal gene expression programs enabling highly specialized cell functions. Using single-cell genomics in six maize organs, we determined the cis- and trans-regulatory factors defining diverse cell identities and coordinating chromatin organization by profiling transcription factor (TF) combinatorics, identifying TFs with non-cell-autonomous activity, and uncovering TFs underlying higher-order chromatin interactions. Cell-type-specific CREs were enriched for enhancer activity and within unmethylated long terminal repeat retrotransposons. Read More

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Retinoic acid stimulates transcription of the rat SHARP-2 gene via multiple pathways.

J Biochem 2021 May 8. Epub 2021 May 8.

Matsumoto University Graduate School of Health Science, 2095-1 Niimura, Matsumoto, Nagano 390-1295, Japan.

Members of the enhancer of split- and hairy-related protein (SHARP) family, SHARP-1 and SHARP-2, are basic helix-loop-helix transcriptional repressors and belong to the clock genes. In this study, an effect of retinoic acid (RA) on the SHARP family gene expression in the differentiated cells was examined. RA rapidly and temporarily induced the SHARP-2 mRNA expression in hepatic H4IIE cells. Read More

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Characterization of a transcription factor SlNAC7 gene from Suaeda liaotungensis and its role in stress tolerance.

J Plant Res 2021 May 8. Epub 2021 May 8.

School of Life Sciences, Liaoning Normal University, Dalian, 116081, China.

NAC (NAM, ATAF1/2, CUC2) transcription factors play important roles in plant growth, development, and responses to abiotic stress. In this study, we cloned an NAC2 subfamily transcription factor gene (SlNAC7) from the halophyte Suaeda liaotungensis K., and conducted a series of studies to determine the characteristics and functions of this gene. Read More

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Mastering the control of the Rho transcription factor for biotechnological applications.

Appl Microbiol Biotechnol 2021 May 8. Epub 2021 May 8.

Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, NSW, 2006, Australia.

The present review represents an update on the fundamental role played by the Rho factor, which facilitates the process of Rho-dependent transcription termination in the prokaryotic world; it also provides a summary of relevant mutations in the Rho factor and the insights they provide into the functions carried out by this protein. Furthermore, a section is dedicated to the putative future use of Rho (the 'taming' of Rho) to facilitate biotechnological processes and adapt them to different technological contexts. Novel bacterial strains can be designed, containing mutations in the rho gene, that are better suited for different biotechnological applications. Read More

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FACT interacts with Set3 HDAC and fine-tunes GAL1 transcription in response to environmental stimulation.

Nucleic Acids Res 2021 May 8. Epub 2021 May 8.

State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.

The histone chaperone facilitates chromatin transactions (FACT) functions in various DNA transactions. How FACT performs these multiple functions remains largely unknown. Here, we found, for the first time, that the N-terminal domain of its Spt16 subunit interacts with the Set3 histone deacetylase complex (Set3C) and that FACT and Set3C function in the same pathway to regulate gene expression in some settings. Read More

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Neural stem cells in the adult olfactory bulb core generate mature neurons in vivo.

Stem Cells 2021 May 8. Epub 2021 May 8.

Instituto Cajal-Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain.

Although previous studies suggest that neural stem cells (NSCs) exist in the adult olfactory bulb (OB), their location, identity and capacity to generate mature neurons in vivo has been little explored. Here, we injected EGFP-expressing retroviral particles into the OB core of adult mice to label dividing cells and to track the differentiation/maturation of any neurons they might generate. EGFP labelled cells initially expressed adult NSC markers on days 1-3 post injection (dpi), including Nestin, GLAST, Sox2, Prominin-1 and GFAP. Read More

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[CRISPR/Cas9-mediated TEAD1 knockout induces phenotypic modulation of corpus cavernosum smooth muscle cells in diabetic rats with erectile dysfunction].

Nan Fang Yi Ke Da Xue Xue Bao 2021 Apr;41(4):567-573

Department of Urology, Second Guangdong Provincial People's Hospital, Guangzhou 510317, China.

Objective: To construct a corpus cavemosum smooth muscle cell (CCSMCs) line with TEAD1 knockout from diabetic rats with erectile dysfunction (ED) using CRISPR/Cas9 technology and explore the role of TEAD1 in phenotypic modulation of CCSMCs in diabetic rats with ED.

Objective: Models of diabetic ED were established in male Sprague-Dawley rats by intraperitoneal injection of streptozotocin. CCSMCs from the rat models were primarily cultured and identified with immunofluorescence assay. Read More

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The global regulator Hfq exhibits far more extensive and intensive regulation than Crc in Pseudomonas protegens H78.

Mol Plant Pathol 2021 May 8. Epub 2021 May 8.

State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.

The biocontrol rhizobacterium Pseudomonas protegens H78 can produce a large array of antimicrobial secondary metabolites, including pyoluteorin (Plt), 2,4-diacetylphloroglucinol (DAPG), and pyrrolnitrin (Prn). Our preliminary study showed that the biosynthesis of antibiotics including Plt is activated by the RNA chaperone Hfq in P. protegens H78. Read More

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STARS overexpression in the mdx mouse enhances muscle functional capacity and regulates the actin cytoskeleton and oxidative phosphorylation pathways.

Exp Physiol 2021 May 7. Epub 2021 May 7.

Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia.

New Findings: What is the central question of this study? Striated Muscle activator of Rho signalling (STARS) is an actin-binding protein that regulates transcriptional pathways controlling muscle function, growth and myogenesis; processes impaired in dystrophic muscle. Regulation of the STARS pathway in Duchenne muscular dystrophy (DMD is unknown. What is the main finding and its importance? Members of the STARS signalling pathway are reduced in the quadriceps of patients with DMD and in mouse models of muscular dystrophy. Read More

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Zeitgebers of skeletal muscle and implications for metabolic health.

J Physiol 2021 May 7. Epub 2021 May 7.

Department of Physiology and Pharmacology, Integrative Physiology, Karolinska Institutet, Stockholm, Sweden.

Metabolic health is a crucial area of current research, and is an outcome of innate physiology, and interactions with the environment. Environmental cues, such as the Earth's day-night rhythm, partly regulate diurnal hormones and metabolites. Circadian physiology consists of highly conserved biological processes over ∼24-hour cycles, which are influenced by external cues (Zeitgebers - "time-keepers"). Read More

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Angiotensin II augments renal vascular smooth muscle sGC expression via an AT R - FoxO transcription factor signaling axis.

Br J Pharmacol 2021 May 7. Epub 2021 May 7.

Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania.

Background And Purpose: Reduced renal blood flow triggers activation of the renin-angiotensin-aldosterone system (RAAS) leading to renovascular hypertension. Renal vascular smooth muscle expression of the nitric oxide (NO) receptor, soluble guanylyl cyclase (sGC), modulates the vasodilatory response needed to control renal vascular tone and blood flow. Here, we tested if angiotensin II (Ang II) impacts sGC expression via an Ang II type 1 receptor (AT R)-forkhead box subclass O (FoxO) transcription factor dependent mechanism. Read More

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A transcriptional hub integrating gibberellin-brassinosteroid signals to promote seed germination in Arabidopsis.

J Exp Bot 2021 May 8. Epub 2021 May 8.

Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Science, South China Normal University, Guangzhou 510631, China.

Seed germination is regulated by multiple phytohormones, including Gibberellins (GAs) and Brassinosteroids (BRs); however, the molecular mechanism underlying GA and BR co-induced seed germination is not well elucidated. We demonstrated that BRs induce seed germination through promoting testa and endosperm rupture in Arabidopsis. BRs promote cell elongation, rather than cell division, at the hypocotyl-radicle transition region of embryonic axis during endosperm rupture. Read More

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