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https://www.readbyqxmd.com/read/29779127/physiological-and-transcriptomic-analysis-of-a-chronologically-long-lived-saccharomyces-cerevisiae-strain-obtained-by-evolutionary-engineering
#1
Mevlüt Arslan, Can Holyavkin, Halil İbrahim Kısakesen, Alican Topaloğlu, Yusuf Sürmeli, Zeynep Petek Çakar
High-throughput aging studies with yeast as a model organism involve transposon-mutagenesis and yeast knockout collection, which have been pivotal strategies for understanding the complex cellular aging process. In this study, a chronologically long-lived Saccharomyces cerevisiae mutant was successfully obtained by using another high-throughput approach, evolutionary engineering, based on systematic selection in successive batch cultures under gradually increasing levels of caloric restriction. Detailed comparative physiological and transcriptomic analyses of the chronologically long-lived mutant and the reference strain revealed enhanced levels of respiratory metabolism, upregulation of genes related to carbohydrate metabolic processes, glycogen-trehalose pathways, stress response, and repression of protein synthesis-related genes in the long-lived mutant SRM11, already in the absence of caloric restriction...
May 19, 2018: Molecular Biotechnology
https://www.readbyqxmd.com/read/29778942/transcriptomic-and-methylomic-analysis-reveal-the-toxicological-effect-of-2-3-7-8-tetrachlorodibenzodioxin-on-human-embryonic-stem-cell
#2
Keng Po Lai, Jing Woei Li, Ting Fung Chan, Andy Chen, Cherie Yin Lau Lee, William Shu Biu Yeung, Chris Kong Chu Wong
Cumulating epidemiological studies demonstrated that environmental exposure to endocrine disrupting chemicals (EDCs) during the early stages of fetal development is associated with the increase in disease susceptibility in later life. The fetal developmental plasticity is considered as a protective mechanism against an undesirable prenatal environment. Dioxin is one of the environmental contaminants and is considered a diabetogenic factor. Experimental animal and human epidemiological studies have revealed that dioxin exposure was associated with insulin resistance and altered beta cell function...
May 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29777991/co-evolutionary-associations-between-root-associated-microbiomes-and-root-transcriptomes-in-wild-and-cultivated-rice-varieties
#3
Lei Tian, Shaohua Shi, Lina Ma, Fahad Nasir, Xiujun Li, Lam-Son Phan Tran, Chunjie Tian
The plants and root-associated microbiomes are closely related. Plant metabolic substances can serve as a nutrient source for the microbiome, and in return, the microbiome can regulate the production of plant metabolic substances. Wild rice (Oryza rufipogon), as the ancestor of cultivated rice (Oryza sativa), has changed several metabolic pathways and root-associated microbiome during evolution. Thus, the study of the different associations between metabolic pathways and root-associated microbiomes in wild and cultivated rice varieties is important for rice breeding...
April 13, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29777871/pain-therapeutics-from-cone-snail-venoms-from-ziconotide-to-novel-non-opioid-pathways
#4
Helena Safavi-Hemami, Shane E Brogan, Baldomero M Olivera
There have been numerous attempts to develop non-opioid drugs for severe pain, but the vast majority of these efforts have failed. A notable exception is Ziconotide (Prialt®), approved by the FDA in 2004. In this review, we summarize the present status of Ziconotide as a therapeutic drug and introduce a wider framework: the potential of venom peptides from cone snails as a resource providing a continuous pipeline for the discovery of non-opioid pain therapeutics. An auxiliary theme that we hope to develop is that these venoms, already a validated starting point for non-opioid drug leads, should also provide an opportunity for identifying novel molecular targets for future pain drugs...
May 16, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29777775/genome-analysis-of-the-ancient-tracheophyte-selaginella-tamariscina-reveals-evolutionary-features-relevant-to-the-acquisition-of-desiccation-tolerance
#5
Zhichao Xu, Tianyi Xin, Dorothea Bartels, Ying Li, Wei Gu, Hui Yao, Sai Liu, Haoying Yu, Xiangdong Pu, Jianguo Zhou, Jiang Xu, Caicai Xi, Hetian Lei, Jingyuan Song, Shilin Chen
Resurrection plants, which are the "gifts" of natural evolution, are ideal models for studying genetic basis of plant desiccation tolerance. Here, we report a high-quality genome assembly of 301 Mb for the diploid spike moss Selaginella tamariscina, a primitive vascular resurrection plant. We predicated 27,761 protein-coding genes from the assembled S. tamariscina genome, 11.38% (2363) of which showed significant expression changes in response to desiccation. Approximately 60.58% of the S. tamariscina genome was annotated as repetitive DNA, which is almost 2-fold increase of that in the genome of desiccation-sensitive S...
May 16, 2018: Molecular Plant
https://www.readbyqxmd.com/read/29777364/cell-division-and-turgor-mediate-enhanced-plant-growth-in-arabidopsis-plants-treated-with-the-bacterial-signalling-molecule-lumichrome
#6
Motlalepula Pholo, Beatrix Coetzee, Hans J Maree, Philip R Young, James R Lloyd, Jens Kossmann, Paul N Hills
Transcriptomic analysis indicates that the bacterial signalling molecule lumichrome enhances plant growth through a combination of enhanced cell division and cell enlargement, and possibly enhances photosynthesis. Lumichrome (7,8 dimethylalloxazine), a novel multitrophic signal molecule produced by Sinorhizobium meliloti bacteria, has previously been shown to elicit growth promotion in different plant species (Phillips et al. in Proc Natl Acad Sci USA 96:12275-12280, https://doi.org/10.1073/pnas.96.22.12275 , 1999)...
May 17, 2018: Planta
https://www.readbyqxmd.com/read/29777132/the-modulation-of-acetic-acid-pathway-genes-in-arabidopsis-improves-survival-under-drought-stress
#7
Sultana Rasheed, Khurram Bashir, Jong-Myong Kim, Marina Ando, Maho Tanaka, Motoaki Seki
The Arabidopsis histone deacetylase 6 (HDA6) mutant exhibits increased tolerance to drought stress by negatively regulating the expression of ALDH2B7 and PDC1. Therefore, it was logical to determine if transgenic Arabidopsis plants expressing PDC1 or ALDH2B7 using a suitable promoter would also exhibit tolerance to drought stress. An analysis of published microarray data indicated the up-regulation of the TSPO gene, which encodes an outer membrane tryptophan-rich sensory protein (TSPO), by drought stress. RT-qPCR, as well as GUS analysis of the promoter, confirmed the up-regulation of TSPO by drought stress in Arabidopsis roots and shoots...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777026/endosomal-tlr3-tlr7-and-tlr8-control-neuronal-morphology-through-different-transcriptional-programs
#8
Yun-Fen Hung, Chiung-Ya Chen, Yi-Chun Shih, Hsin-Yu Liu, Chiao-Ming Huang, Yi-Ping Hsueh
Neuroinflammation is associated with diverse neurological disorders. Endosomal Toll-like receptors (TLRs) including TLR3, TLR7, and TLR8 cell-autonomously regulate neuronal differentiation. However, the mechanisms by which these three TLRs affect neuronal morphology are unclear. In this study, we compare these TLRs in mouse neurons. By combining in vitro neuronal cultures, in utero electroporation, and transcriptomic profiling, we show that TLR8, TLR7, and TLR3 promote dendritic pruning via MYD88 signaling...
May 18, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29776925/unravelling-the-reduction-pathway-as-alternative-metabolic-route-to-hydroxycinnamate-decarboxylation-in-lactobacillus-plantarum
#9
Laura Santamaría, Inés Reverón, Félix López de Felipe, Blanca de Las Rivas, Rosario Muñoz
Lactobacillus plantarum is the lactic acid bacterial species most frequently found in plant-food fermentations where hydroxycinnamic acids are abundant. L. plantarum efficiently decarboxylates these compounds, and also reduces them, yielding substituted phenylpropionic acids. Although the reduction step is known to be induced by a hydroxycinnamic acid, the enzymatic machinery responsible for this reduction pathway has not been yet identified and characterized. A previous study on the transcriptomic response of L...
May 18, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29776391/the-clinical-implications-of-g1-g6-transcriptomic-signature-and-5-gene-score-in-korean-patients-with-hepatocellular-carcinoma
#10
Sung-Min Ahn, Farhan Haq, Inkeun Park, Jean-Charles Nault, Jessica Zucman-Rossi, Eunsil Yu
BACKGROUND: Efforts have been made to classify Hepatocellular Carcinoma (HCC) at surgically curable stages because molecular classification, which is prognostically informative, can accurately identify patients in need of additional early therapeutic interventions. Recently, HCC classification based French studies on the expression of 16 genes and 5 genes were proposed. In 16-gene classification, transcriptomic signatures (G1-G6) were used to classify HCC patients into clinical, genomic and pathway-specific subgroups...
May 18, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29776387/integrative-genomics-approaches-validate-ppyuc11-like-as-candidate-gene-for-the-stony-hard-trait-in-peach-p-persica-l-batsch
#11
Marco Cirilli, Daniela Giovannini, Angelo Ciacciulli, Remo Chiozzotto, Stefano Gattolin, Laura Rossini, Alessandro Liverani, Daniele Bassi
BACKGROUND: Texture is one of the most important fruit quality attributes. In peach, stony hard (SH) is a recessive monogenic trait (hd/hd) that confers exceptionally prolonged firm flesh to fully ripe fruit. Previous studies have shown that the SH mutation affects the fruit ability to synthesize appropriate amounts of indol-3-acetic acid (IAA), which orchestrates the ripening processes through the activation of system 2 ethylene pathway. Allelic variation in a TC microsatellite located within the first intron of PpYUC11-like (a YUCCA-like auxin-biosynthesis gene) has been recently proposed as the causal mutation of the SH phenotype...
May 18, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29776373/metabolic-therapy-with-peg-arginase-induces-a-sustained-complete-remission-in-immunotherapy-resistant-melanoma
#12
Carmela De Santo, Paul Cheng, Andrew Beggs, Sharon Egan, Alberto Bessudo, Francis Mussai
BACKGROUND: Metastatic melanoma is an aggressive skin cancer with a poor prognosis. Current treatment strategies for high-stage melanoma are based around the use of immunotherapy with immune checkpoint inhibitors such as anti-PDL1 or anti-CTLA4 antibodies to stimulate anti-cancer T cell responses, yet a number of patients will relapse and die of disease. Here, we report the first sustained complete remission in a patient with metastatic melanoma who failed two immunotherapy strategies, by targeting tumour arginine metabolism...
May 18, 2018: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29776333/transcriptomic-analysis-of-genes-in-soybean-in-response-to-peronospora-manshurica-infection
#13
Hang Dong, Shuangfeng Shi, Chong Zhang, Sihui Zhu, Mei Li, Jie Tan, Yue Yu, Liping Lin, Shirong Jia, Xujing Wang, Yuanhua Wu, Yuhui Liu
BACKGROUND: Soybean downy mildew (SDM), caused by Peronospora manshurica (Pm), is a major fungal disease in soybean. To date, little is known regarding the defense mechanism at molecular level and how soybean plants response to Pm infection. In this study, differential gene expression in SDM-resistant (HR) and SDM-susceptible (HS) genotype was analyzed by RNA-seq to identify differentially expressed genes (DEGs) following Pm infection. RESULTS: Of a total of 55,017 genes mapped to the soybean reference genome sequences, 2581 DEGs were identified...
May 18, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29775430/gene-expression-profile-analysis-of-aortic-vascular-smooth-muscle-cells-reveals-upregulation-of-cadherin-genes-in-myocardial-infarction-patients
#14
Anselm A Derda, Chin Cheng Woo, Thidathip Wongsurawat, Mark Richards, Chuen Neng Lee, Theo Kofidis, Vladimir A Kuznetsov, Vitaly A Sorokin
Myocardial infarction (MI) induced by acute coronary arterial occlusion is usually secondary to atherosclerotic plaque rupture. Dysregulated response of vascular smooth muscle cells (VSMCs) in atherosclerotic plaques may promote plaque rupture. Cadherins (CDHs) form adherens junctions and are known stabilizers of atherosclerotic plaques. To date, the expression patterns of cadherin have not been well investigated in MI aortic VSMCs. We aimed to investigate the expression of cadherin genes in the aortic wall of patients with and without MI...
May 18, 2018: Physiological Genomics
https://www.readbyqxmd.com/read/29774113/ezh2-inhibitors-sensitize-myeloma-cell-lines-to-panobinostat-resulting-in-unique-combinatorial-transcriptomic-changes
#15
Taylor Harding, Jessica Swanson, Brian Van Ness
Multiple myeloma (MM) remains a largely incurable hematologic cancer due to an inability to broadly target inevitable drug-resistant relapse. Epigenetic abnormalities are abundantly present in multiple myeloma and have increasingly demonstrated critical roles for tumor development and relapse to standard therapies. Accumulating evidence suggests that the histone methyltransferase EZH2 is aberrantly active in MM. We tested the efficacy of EZH2 specific inhibitors in a large panel of human MM cell lines (HMCLs) and found that only a subset of HMCLs demonstrate single agent sensitivity despite ubiquitous global H3K27 demethylation...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774072/twist-promotes-tumor-metastasis-in-basal-like-breast-cancer-by-transcriptionally-upregulating-ror1
#16
Jingying Cao, Xin Wang, Tao Dai, Yuanzhong Wu, Meifang Zhang, Renxian Cao, Ruhua Zhang, Gang Wang, Rou Jiang, Binhua P Zhou, Jian Shi, Tiebang Kang
Rationale: Twist is a key transcription factor for induction of epithelial-mesenchymal transition (EMT), which promotes cell migration, invasion, and cancer metastasis, confers cancer cells with stem cell-like characteristics, and provides therapeutic resistance. However, the functional roles and targeted genes of Twist in EMT and cancer progression remain elusive. Methods: The potential targeted genes of Twist were identified from the global transcriptomes of T47D/Twist cells by microarray analysis. EMT phenotype was detected by western blotting and immunofluorescence of marker proteins...
2018: Theranostics
https://www.readbyqxmd.com/read/29774067/estrogen-receptors-orchestrate-cell-growth-and-differentiation-to-facilitate-liver-regeneration
#17
Ta-Lun Kao, Yu-Ping Kuan, Wei-Chung Cheng, Wei-Chun Chang, Long-Bin Jeng, Shuyuan Yeh, Wen-Lung Ma
Background and Aims: Improving liver regeneration (LR) capacity and thereby liver function reserve is a critical bridging strategy for managing liver failure patients. Since estrogen signaling may participate in LR, our aim was to characterize the roles of ERα and ERβ in LR. Methods: LR capacity and estradiol levels following 2/3rd partial hepatectomy (PHx) were compared in ERα-KO or ERβ-KO vs. wildtype mice. The ERα- or ERβ-related transcriptome and interactome were analyzed from regenerating livers, and then bioinformatics was used for pathway discovery and analysis of interactome-transcriptome relationships...
2018: Theranostics
https://www.readbyqxmd.com/read/29774040/-oligocellula1-high-expression-of-osmotically-responsive-genes15-promotes-cell-proliferation-with-histone-deacetylase9-and-powerdress-during-leaf-development-in-arabidopsis-thaliana
#18
Marina Suzuki, Nanae Shinozuka, Tomohiro Hirakata, Miyuki T Nakata, Taku Demura, Hirokazu Tsukaya, Gorou Horiguchi
Organ size regulation is dependent on the precise spatial and temporal regulation of cell proliferation and cell expansion. A number of transcription factors have been identified that play a key role in the determination of aerial lateral organ size, but their functional relationship to various chromatin modifiers has not been well understood. To understand how leaf size is regulated, we previously isolated the oligocellula1 ( oli1 ) mutant of Arabidopsis thaliana that develops smaller first leaves than the wild type (WT) mainly due to a reduction in the cell number...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29773992/functional-analysis-of-rna-interference-related-soybean-pod-borer-lepidoptera-genes-based-on-transcriptome-sequences
#19
Fanli Meng, Mingyu Yang, Yang Li, Tianyu Li, Xinxin Liu, Guoyue Wang, Zhanchun Wang, Xianhao Jin, Wenbin Li
RNA interference (RNAi) is useful for controlling pests of agriculturally important crops. The soybean pod borer (SPB) is the most important soybean pest in Northeastern Asia. In an earlier study, we confirmed that the SPB could be controlled via transgenic plant-mediated RNAi. Here, the SPB transcriptome was sequenced to identify RNAi-related genes, and also to establish an RNAi-of-RNAi assay system for evaluating genes involved in the SPB systemic RNAi response. The core RNAi genes, as well as genes potentially involved in double-stranded RNA (dsRNA) uptake were identified based on SPB transcriptome sequences...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29773913/auxin-decreases-chromatin-accessibility-through-the-tir1-afbs-auxin-signaling-pathway-in-proliferative-cells
#20
Junko Hasegawa, Takuya Sakamoto, Satoru Fujimoto, Tomoe Yamashita, Takamasa Suzuki, Sachihiro Matsunaga
Chromatin accessibility is closely associated with chromatin functions such as gene expression, DNA replication, and maintenance of DNA integrity. However, the relationship between chromatin accessibility and plant hormone signaling has remained elusive. Here, based on the correlation between chromatin accessibility and DNA damage, we used the sensitivity to DNA double strand breaks (DSBs) as an indicator of chromatin accessibility and demonstrated that auxin regulates chromatin accessibility through the TIR1/AFBs signaling pathway in proliferative cells...
May 17, 2018: Scientific Reports
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