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https://www.readbyqxmd.com/read/28817092/biochemical-and-comparative-transcriptomic-analyses-identify-candidate-genes-related-to-variegation-formation-in-paeonia-rockii
#1
Qianqian Shi, Long Li, Xiaoxiao Zhang, Jianrang Luo, Xiang Li, Lijuan Zhai, Lixia He, Yanlong Zhang
Paeonia rockii is a wild tree peony species with large and dark purple variegations at the base of its petals. It is the genetic resource for various variegation patterns in tree peony cultivars, which is in contrast to the pure white petals of Paeonia ostii. However, the molecular mechanism underlying the formation of variegation in this plant is still unknown. Here, we conducted Illumina transcriptome sequencing for P. rockii, P. ostii (with pure white petals) and their F1 individuals (with purple-red variegation)...
August 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28813986/evaluation-of-the-myo-armband-for-the-classification-of-hand-motions
#2
I Mendez, B W Hansen, C M Grabow, E J L Smedegaard, N B Skogberg, X J Uth, A Bruhn, B Geng, E N Kamavuako
Pattern recognition-based control systems have been widely investigated in prostheses and virtual reality environments to improve amputees' quality of life. Most of these systems use surface electromyography (EMG) to detect user movement intentions. The Myo armband (MYB) is a wireless wearable device, developed by Thalmic Labs, which enables EMG recordings with a limited bandwidth (<100Hz). The aim of this study was to compare MYB's narrow bandwidth with a conventional EMG acquisition system (CONV) that captures the full EMG spectrum to assess its suitability for pattern recognition control...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28811336/catastrophic-unbalanced-genome-rearrangements-cause-somatic-loss-of-berry-color-in-grapevine
#3
Pablo Carbonell-Bejerano, Carolina Royo, Rafael Torres-Pérez, Jérôme Grimplet, Lucie Fernandez, Jose M Franco-Zorrilla, Diego Lijavetzky, Elisa Baroja, Juana Martínez, Enrique García-Escudero, Javier Ibáñez, José M Martínez-Zapater
Grape color somatic variants that can be used to develop new grapevine cultivars occasionally appear associated to deletion events of uncertain origin. To understand the mutational mechanisms generating somatic structural variation in grapevine, we compared the Tempranillo Blanco (TB) white berry somatic variant to its black berry ancestor, Tempranillo Tinto. Whole-genome sequencing (WGS) uncovered a catastrophic genome rearrangement in TB that caused the hemizygous deletion of 313 genes, including the loss of the functional copy for the MYB transcription factors required for anthocyanin pigmentation in the berry skin...
August 15, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28811300/epigenetic-regulation-by-the-menin-pathway
#4
Zijie Feng, Jian Ma, Xianxin Hua
There is a trend of increasing prevalence of neuroendocrine tumors (NETs), and the inherited multiple endocrine neoplasia type 1 (MEN1) syndrome serves as a genetic model to investigate how NETs develop and the underlying mechanisms. Menin, encoded by the MEN1 gene, at least partly acts as a scaffold protein by interacting with multiple partners to regulate cellular homeostasis of various endocrine organs. Menin has multiple functions including regulating several important signaling pathways by controlling gene transcription...
August 15, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28806394/smggds-is-a-transient-nucleolar-protein-that-protects-cells-from-nucleolar-stress-and-promotes-the-cell-cycle-by-regulating-dream-complex-gene-expression
#5
P Gonyo, C Bergom, A C Brandt, S-W Tsaih, Y Sun, T M Bigley, E L Lorimer, S S Terhune, H Rui, M J Flister, R M Long, C L Williams
The chaperone protein and guanine nucleotide exchange factor SmgGDS (RAP1GDS1) is a key promoter of cancer cell proliferation and tumorigenesis. SmgGDS undergoes nucleocytoplasmic shuttling, suggesting that it has both cytoplasmic and nuclear functions that promote cancer. Previous studies indicate that SmgGDS binds cytoplasmic small GTPases and promotes their trafficking to the plasma membrane. In contrast, little is known about the functions of SmgGDS in the nucleus, or how these nuclear functions might benefit cancer cells...
August 14, 2017: Oncogene
https://www.readbyqxmd.com/read/28802165/the-world-according-to-garp-transcription-factors
#6
REVIEW
Alaeddine Safi, Anna Medici, Wojciech Szponarski, Sandrine Ruffel, Benoît Lacombe, Gabriel Krouk
Plant specific GARP transcription factor family (made of ARR-B and G2-like) contains genes with very diverse in planta functions: nutrient sensing, root and shoot development, floral transition, chloroplast development, circadian clock oscillation maintenance, hormonal transport and signaling. In this work we review: first, their structural but distant relationships with MYB transcription factors, second, their role in planta, third, the diversity of their Cis-regulatory elements, fourth, their potential protein partners...
August 10, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28799433/cell-cycle-transcription-control-dream-muvb-and-rb-e2f-complexes
#7
Martin Fischer, Gerd A Müller
The precise timing of cell cycle gene expression is critical for the control of cell proliferation; de-regulation of this timing promotes the formation of cancer and leads to defects during differentiation and development. Entry into and progression through S phase requires expression of genes coding for proteins that function in DNA replication. Expression of a distinct set of genes is essential to pass through mitosis and cytokinesis. Expression of these groups of cell cycle-dependent genes is regulated by the RB pocket protein family, the E2F transcription factor family, and MuvB complexes together with B-MYB and FOXM1...
August 11, 2017: Critical Reviews in Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28797734/microrna-150-controls-differentiation-of-intraepithelial-lymphocytes-via-tgf-%C3%AE-receptor-ii-regulation
#8
Sang-Hwan Seo, Min Seong Jang, Doo-Jin Kim, Seok-Min Kim, Se-Chan Oh, Cho-Rok Jung, Yunji Park, Sang-Jun Ha, Haiyoung Jung, Young-Jun Park, Suk Ran Yoon, Inpyo Choi, Tae-Don Kim
BACKGROUND: Intraepithelial lymphocytes (IELs) in the intestines play pivotal roles in maintaining the integrity of the mucosa, regulating the immune cells, and protecting against pathogenic invasion. Although several extrinsic factors such as transforming growth factor-β (TGF-β) have been identified to contribute to IEL generation, intrinsic regulatory factors have not been fully determined. OBJECTIVE: Here, we investigated the regulation of IEL differentiation and the underlying mechanisms in mice...
August 7, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28790107/runx1-is-required-for-oncogenic-myb-and-myc-enhancer-activity-in-t-cell-acute-lymphoblastic-leukemia
#9
AHyun Choi, Anuradha Illendula, John A Pulikkan, Justine E Roderick, Jessica Tesell, Jun Yu, Nicole Hermance, Lihua Julie Zhu, Lucio H Castilla, John H Bushweller, Michelle A Kelliher
The gene encoding the RUNX1 transcription factor is mutated in a subset of T cell acute lymphoblastic leukemia (T-ALL) patients and RUNX1 mutations are associated with a poor prognosis. These mutations cluster in the DNA binding Runt domain, are thought to represent loss-of-function mutations, indicating that RUNX1 suppresses T cell transformation. RUNX1 has been proposed to have tumor suppressor roles in TLX1/3 transformed human T-ALL cell lines and NOTCH1 T-ALL mouse models. Yet retroviral insertional mutagenesis screens identify RUNX genes as collaborating oncogenes in MYC-driven leukemia mouse models...
August 8, 2017: Blood
https://www.readbyqxmd.com/read/28776040/grf10-and-bas1-regulate-transcription-of-adenylate-and-one-carbon-biosynthesis-genes-and-affect-virulence-in-the-human-fungal-pathogen-candida-albicans
#10
Tanaporn Wangsanut, Anup K Ghosh, Peter G Metzger, William A Fonzi, Ronda J Rolfes
Candida albicans is an opportunistic human fungal pathogen that causes superficial fungal infections and lethal systemic infections. To colonize and establish infections, C. albicans coordinates the expression of virulence and metabolic genes. Previous work showed that the homeodomain transcription factor Grf10 is required for formation of hyphae, a virulence factor. Here we report global gene expression analysis of a grf10Δ strain using a DNA microarray and identify genes for de novo adenylate biosynthesis (ADE genes), one-carbon metabolism, and a nucleoside permease (NUP)...
July 2017: MSphere
https://www.readbyqxmd.com/read/28769974/flavonoid-accumulation-plays-an-important-role-in-the-rust-resistance-of-malus-plant-leaves
#11
Yanfen Lu, Qi Chen, Yufen Bu, Rui Luo, Suxiao Hao, Jie Zhang, Ji Tian, Yuncong Yao
Cedar-apple rust (Gymnosporangium yamadai Miyabe) is a fungal disease that causes substantial injury to apple trees and results in fruit with reduced size and quality and a lower commercial value. The molecular mechanisms underlying the primary and secondary metabolic effects of rust spots on the leaves of Malus apple cultivars are poorly understood. Using HPLC, we found that the contents of flavonoid compounds, especially anthocyanin and catechin, were significantly increased in rust-infected symptomatic tissue (RIT)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769969/functional-characterization-of-a-novel-r2r3-myb-transcription-factor-modulating-the-flavonoid-biosynthetic-pathway-from-epimedium-sagittatum
#12
Wenjun Huang, Haiyan Lv, Ying Wang
Epimedium species have been widely used both as traditional Chinese medicinal plants and ornamental perennials. Both flavonols, acting as the major bioactive components (BCs) and anthocyanins, predominantly contributing to the color diversity of Epimedium flowers belong to different classes of flavonoids. It is well-acknowledged that flavonoid biosynthetic pathway is predominantly regulated by R2R3-MYB transcription factor (TF) as well as bHLH TF and WD40 protein at the transcriptional level. MYB TFs specifically regulating anthocyanin or flavonol biosynthetic pathway have been already isolated and functionally characterized from Epimedium sagittatum, but a R2R3-MYB TF involved in regulating both these two pathways has not been functionally characterized to date in Epimedium plants...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769962/global-gene-expression-analysis-reveals-crosstalk-between-response-mechanisms-to-cold-and-drought-stresses-in-cassava-seedlings
#13
Shuxia Li, Xiang Yu, Zhihao Cheng, Xiaoling Yu, Mengbin Ruan, Wenbin Li, Ming Peng
Abiotic stress negatively impacts cassava (Manihot esculenta) growth and yield. Several molecular mechanisms of plant response to cold and drought have been identified and described in the literature, however, little is known about the crosstalk of the responses of cassava to these two stresses. To elucidate this question, transcriptome analysis of cassava seedlings under cold or PEG-simulated drought stress treatment was performed. Our results showed that 6103 and 7462 transcripts were significantly regulated by cold and drought stress, respectively...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28760770/transcriptional-mechanisms-that-control-expression-of-the-macrophage-colony-stimulating-factor-receptor-locus
#14
REVIEW
Rocio Rojo, Clare Pridans, David Langlais, David A Hume
The proliferation, differentiation, and survival of cells of the macrophage lineage depends upon signals from the macrophage colony-stimulating factor (CSF) receptor (CSF1R). CSF1R is expressed by embryonic macrophages and induced early in adult hematopoiesis, upon commitment of multipotent progenitors to the myeloid lineage. Transcriptional activation of CSF1R requires interaction between members of the E26 transformation-specific family of transcription factors (Ets) (notably PU.1), C/EBP, RUNX, AP-1/ATF, interferon regulatory factor (IRF), STAT, KLF, REL, FUS/TLS (fused in sarcoma/ranslocated in liposarcoma) families, and conserved regulatory elements within the mouse and human CSF1R locus...
August 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28757414/the-wheat-salinity-induced-r2r3-myb-transcription-factor-tasim-confers-salt-stress-tolerance-in-arabidopsis-thaliana
#15
Yuehua Yu, Zhiyong Ni, Quanjia Chen, Yanying Qu
MYB transcription factors are a large family of proteins involved in plant development and responses to stress. In this study, the wheat salinity-induced R2R3-MYB transcription factor TaSIM was functionally characterized, with a focus on its role in salt stress tolerance. TaSIM protein enters the nucleus and binds to the MYB-binding site II motif. Expression analysis revealed that TaSIM was induced by drought, high salinity, low temperature, and abscisic acid treatment. Overexpression of TaSIM improved salt stress tolerance in transgenic plants...
July 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28754957/ddr2-controls-the-epithelial-mesenchymal-transition-related-gene-expression-via-c-myb-acetylation-upon-matrix-stiffening
#16
Daehwan Kim, Eunae You, Jangho Jeong, Panseon Ko, Jung-Woong Kim, Sangmyung Rhee
Increasing matrix stiffness caused by the extracellular matrix (ECM) deposition surrounding cancer cells is accompanied by epithelial-mesenchymal transition (EMT). Here, we show that expression levels of EMT marker genes along with discoidin domain receptor 2 (DDR2) can increase upon matrix stiffening. DDR2 silencing by short hairpin RNA downregulated EMT markers. Promoter analysis and chromatin immunoprecipitation revealed that c-Myb and LEF1 may be responsible for DDR2 induction during cell culture on a stiff matrix...
July 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28748856/the-short-isoform-of-nuclear-mitotic-apparatus-protein-1-functions-as-a-putative-tumor-suppressor
#17
Wang-Sen Qin, Jin Wu, Yang Chen, Fa-Cai Cui, Fu-Ming Zhang, Guan-Ting Lyu, Hong-Mei Zhang
BACKGROUND: Nuclear mitotic apparatus protein 1 (NuMA1) had been reported to produce three groups of isoforms categorized as long, middle, and short groups, of which short NuMA displayed distinct localization patterns compared to long and middle isoforms. However, the function of short NuMA was not clear in the progress of cancer formation. This study aimed to unveil the role of short NuMA in cancer pathogenesis. METHODS: The expression levels of short isoforms were explored in paired gastric carcinoma (GC) samples and different cell lines...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28747560/germline-variations-at-jak2-tert-hbs1l-myb-and-mecom-and-the-risk-of-myeloproliferative-neoplasms-in-taiwanese-population
#18
Yi-Hao Chiang, Yu-Cheng Chang, Huan-Chau Lin, Ling Huang, Chun-Chia Cheng, Wei-Ting Wang, Hung-I Cheng, Nai-Wen Su, Caleb Gon-Shen Chen, Johnson Lin, Yi-Fang Chang, Ming-Chih Chang, Ruey-Kuen Hsieh, Wen-Chien Chou, Ken-Hong Lim, Yuan-Yeh Kuo
Germline variations at JAK2, TERT, HBS1L-MYB and MECOM have been found to associate with myeloproliferative neoplasms (MPNs) in European populations. Whether these germline variations are associated with MPNs in Taiwanese population is obscure. Here we aimed to evaluate the association of five germline variations (JAK2 46/1 haplotype tagged by rs12343867, JAK2 intron 8 rs12339666, TERT rs2736100, HBS1L-MYB rs9376092 and MECOM rs2201862) and the risk of MPNs in Taiwanese population. A total of 178 MPN patients (109 essential thrombocythemia, 54 polycythemia vera and 15 primary myelofibrosis) were enrolled into this study...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28740499/multi-omics-and-integrated-network-analyses-reveal-new-insights-into-the-systems-relationships-between-metabolites-structural-genes-and-transcriptional-regulators-in-developing-grape-berries-vitis-vinifera-l-exposed-to-water-deficit
#19
Stefania Savoi, Darren C J Wong, Asfaw Degu, Jose C Herrera, Barbara Bucchetti, Enrico Peterlunger, Aaron Fait, Fulvio Mattivi, Simone D Castellarin
Grapes are one of the major fruit crops and they are cultivated in many dry environments. This study comprehensively characterizes the metabolic response of grape berries exposed to water deficit at different developmental stages. Increases of proline, branched-chain amino acids, phenylpropanoids, anthocyanins, and free volatile organic compounds have been previously observed in grape berries exposed to water deficit. Integrating RNA-sequencing analysis of the transcriptome with large-scale analysis of central and specialized metabolites, we reveal that these increases occur via a coordinated regulation of key structural pathway genes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28733420/sg2-type-r2r3-myb-transcription-factor-myb15-controls-defense-induced-lignification-and-basal-immunity-in-arabidopsis
#20
William R Chezem, Altamash Memon, Fu-Shuang Li, Jing-Ke Weng, Nicole Kho Clay
Lignification of cell wall appositions is a conserved basal defense mechanism in the plant innate immune response. However, the genetic pathway controlling defense-induced lignification remains unknown. Here, we demonstrate the Arabidopsis thaliana SG2-type R2R3-MYB transcription factor MYB15 as a regulator of defense-induced lignification and basal immunity. Loss of MYB15 reduces the content but not the composition of defense-induced lignin, whereas constitutive expression of MYB15 increases lignin content independently of immune activation...
July 21, 2017: Plant Cell
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