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https://www.readbyqxmd.com/read/28108965/transcriptomic-and-hormone-analyses-reveal-mechanisms-underlying-petal-elongation-in-chrysanthemum-morifolium-jinba
#1
Jingjing Wang, Haibin Wang, Lian Ding, Aiping Song, Feng Shen, Jiafu Jiang, Sumei Chen, Fadi Chen
Auxin regulates chrysanthemum petal elongation by promoting cell elongation. Transcriptomic analysis shows that auxin signal transduction may connect with other transcription factors by TCPs to regulate chrysanthemum petal elongation. As an ornamental species, Chrysanthemum morifolium has high ornamental and economic value. Petal size is the primary factor that influences the ornamental value of chrysanthemum, but the mechanism underlying the development of C. morifolium petals remains unclear. In our study, we tracked the growth of petals and found that the basal region of 'Jinba' petals showed a higher elongation rate, exhibiting rapid cell elongation during petal growth...
January 20, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28108660/from-benchmarking-hits-clip-peak-detection-programs-to-a-new-method-for-identification-of-mirna-binding-sites-from-ago2-clip-data
#2
Silvia Bottini, Nedra Hamouda-Tekaya, Bogdan Tanasa, Laure-Emmanuelle Zaragosi, Valerie Grandjean, Emanuela Repetto, Michele Trabucchi
Experimental evidence indicates that about 60% of miRNA-binding activity does not follow the canonical rule about the seed matching between miRNA and target mRNAs, but rather a non-canonical miRNA targeting activity outside the seed or with a seed-like motifs. Here, we propose a new unbiased method to identify canonical and non-canonical miRNA-binding sites from peaks identified by Ago2 Cross-Linked ImmunoPrecipitation associated to high-throughput sequencing (CLIP-seq). Since the quality of peaks is of pivotal importance for the final output of the proposed method, we provide a comprehensive benchmarking of four peak detection programs, namely CIMS, PIPE-CLIP, Piranha and Pyicoclip, on four publicly available Ago2-HITS-CLIP datasets and one unpublished in-house Ago2-dataset in stem cells...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108659/yamat-seq-an-efficient-method-for-high-throughput-sequencing-of-mature-transfer-rnas
#3
Megumi Shigematsu, Shozo Honda, Phillipe Loher, Aristeidis G Telonis, Isidore Rigoutsos, Yohei Kirino
Besides translation, transfer RNAs (tRNAs) play many non-canonical roles in various biological pathways and exhibit highly variable expression profiles. To unravel the emerging complexities of tRNA biology and molecular mechanisms underlying them, an efficient tRNA sequencing method is required. However, the rigid structure of tRNA has been presenting a challenge to the development of such methods. We report the development of Y-shaped Adapter-ligated MAture TRNA sequencing (YAMAT-seq), an efficient and convenient method for high-throughput sequencing of mature tRNAs...
January 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28108551/genotype-calling-from-population-genomic-sequencing-data
#4
Takahiro Maruki, Michael Lynch
Genotype calling plays important roles in population-genomic studies, which have been greatly accelerated by sequencing technologies. To take full advantage of the resultant information, we have developed maximum-likelihood (ML) methods for calling genotypes from high-throughput sequencing data. As the statistical uncertainties associated with sequencing data depend on depths of coverage, we have developed two types of genotype callers. One approach is appropriate for low-coverage sequencing data, and incorporates population-level information on genotype frequencies and error rates pre-estimated by an ML method...
January 20, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28108447/mirmine-a-database-of-human-mirna-expression-profiles
#5
Bharat Panwar, Gilbert S Omenn, Yuanfang Guan
MOTIVATION: MicroRNAs (miRNAs) are small non-coding RNAs that are involved in post-transcriptional regulation of gene expression. In this high-throughput sequencing era, a tremendous amount of RNA-seq data is accumulating, and full utilization of publicly available miRNA data is an important challenge. These data are useful to determine expression values for each miRNA, but quantification pipelines are in a primitive stage and still evolving; there are many factors that affect expression values significantly...
January 19, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28107435/peptide-targeted-by-human-antibodies-associated-with-hiv-vaccine-associated-protection-assumes-a-dynamic-%C3%AE-helical-structure
#6
Mohammed S Aiyegbo, Evgeny Shmelkov, Lorenzo Dominguez, Michael Goger, Shibani Battacharya, Allan C deCamp, Peter B Gilbert, Phillip W Berman, Timothy Cardozo
The only evidence of vaccine-induced protection from HIV acquisition in humans was obtained in the RV144 HIV vaccine clinical trial. One immune correlate of risk in RV144 was observed to be higher titers of vaccine-induced antibodies (Abs) reacting with a 23-mer non-glycosylated peptide with the same amino acid sequence as a segment in the second variable (V2) loop of the MN strain of HIV. We used NMR to analyze the dynamic 3D structure of this peptide. Distance restraints between spatially proximate inter-residue protons were calculated from NOE cross peak intensities and used to constrain a thorough search of all possible conformations of the peptide...
2017: PloS One
https://www.readbyqxmd.com/read/28107426/identification-of-micrornas-in-response-to-drought-in-common-wild-rice-oryza-rufipogon-griff-shoots-and-roots
#7
Jing-Wen Zhang, Yan Long, Man-de Xue, Xing-Guo Xiao, Xin-Wu Pei
BACKGROUND: Drought is the most important factor that limits rice production in drought-prone environments. Plant microRNAs (miRNAs) are involved in biotic and abiotic stress responses. Common wild rice (Oryza rufipogon Griff.) contains abundant drought-resistant genes, which provide an opportunity to explore these excellent resources as contributors to improve rice resistance, productivity, and quality. RESULTS: In this study, we constructed four small RNA libraries, called CL and CR from PEG6000-free samples and DL and DR from PEG6000-treated samples, where 'R' indicates the root tissue and 'L' indicates the shoot tissue...
2017: PloS One
https://www.readbyqxmd.com/read/28107181/cyclin-e-overexpression-as-a-biomarker-for-combination-treatment-strategies-in-inflammatory-breast-cancer
#8
Angela Alexander, Cansu Karakas, Xian Chen, Jason P W Carey, Min Yi, Melissa Bondy, Patricia Thompson, Kwok Leung Cheung, Ian O Ellis, Yun Gong, Savitri Krishnamurthy, Ricardo H Alvarez, Naoto T Ueno, Kelly K Hunt, Khandan Keyomarsi
Inflammatory breast cancer (IBC) is a virulent form of breast cancer, and novel treatment strategies are urgently needed. Immunohistochemical analysis of tumors from women with a clinical diagnosis of IBC (n = 147) and those with non-IBC breast cancer (n = 2510) revealed that, whereas in non-IBC cases cytoplasmic cyclin E was highly correlated with poor prognosis (P < 0.001), in IBC cases both nuclear and cytoplasmic cyclin E were indicative of poor prognosis. These results underscored the utility of the cyclin E/CDK2 complex as a novel target for treatment...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28106753/naphthalimides-selectively-inhibit-the-activity-of-bacterial-replicative-dna-ligases-and-display-bactericidal-effects-against-tubercle-bacilli
#9
Malgorzata Korycka-Machala, Marcin Nowosielski, Aneta Kuron, Sebastian Rykowski, Agnieszka Olejniczak, Marcin Hoffmann, Jaroslaw Dziadek
The DNA ligases, enzymes that seal breaks in the backbones of DNA, are essential for all organisms, however bacterial ligases essential for DNA replication use β-nicotinamide adenine dinucleotide as their co-factor, whereas those that are essential in eukaryotes and viruses use adenosine-5'-triphosphate. This fact leads to the conclusion that NAD⁺-dependent DNA ligases in bacteria could be targeted by their co-factor specific inhibitors. The development of novel alternative medical strategies, including new drugs, are a top priority focus areas for tuberculosis research due to an increase in the number of multi-drug resistant as well as totally drug resistant tubercle bacilli strains...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28106309/transposable-elements-tes-contribute-to-stress-related-long-intergenic-noncoding-rnas-in-plants
#10
Dong Wang, Zhipeng Qu, Lan Yang, Qingzhu Zhang, Zhi-Hong Liu, Trung Do, David L Adelson, Zhen-Yu Wang, Iain Searle, Jian-Kang Zhu
Noncoding RNAs have been extensively described in plant and animal transcriptomes by using high-throughput sequencing technology. Of these non-coding RNAs, a growing number of long intergenic noncoding RNAs (lincRNAs) have been described in multicellular organisms, however the origins and functions of many lincRNAs remain to be explored. In many eukaryotic genomes, transposable elements (TEs) are widely distributed and often account for large fractions of plant and animal genomes yet the contribution of TEs to lincRNAs is largely unknown...
January 20, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28106300/expression-profiles-analysis-and-functional-characterization-of-microrna-660-in-skeletal-muscle-differentiation
#11
Binglin Yue, Jiyao Wu, Yanhuan Wang, Chunlei Zhang, Xingtang Fang, Hong Chen
MicroRNA are a series of small non-coding RNAs that have emerged as critical regulators of skeletal muscle development. Here, we concentrated on the function of miR-660 during bovine skeletal myogenesis from our previous high-throughput sequencing results, then analyzed its expression profiles and characterized related functional roles. Overexpression of miR-660 significantly attenuated myogenic differentiation of C2C12 cells, whereas miR-660 inhibition enhanced C2C12 differentiation. Dual-Luciferase Reporter Assay went for demonstrating that miR-660 directly targeted the 3'-UTR of Rho guanine nucleotide exchange factor 12(ARHGEF-12)...
January 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28105944/gene-expression-profiling-of-flax-linum-usitatissimum-l-under-edaphic-stress
#12
Alexey A Dmitriev, Anna V Kudryavtseva, George S Krasnov, Nadezhda V Koroban, Anna S Speranskaya, Anastasia A Krinitsina, Maxim S Belenikin, Anastasiya V Snezhkina, Asiya F Sadritdinova, Natalya V Kishlyan, Tatiana A Rozhmina, Olga Yu Yurkevich, Olga V Muravenko, Nadezhda L Bolsheva, Nataliya V Melnikova
BACKGROUND: Cultivated flax (Linum usitatissimum L.) is widely used for production of textile, food, chemical and pharmaceutical products. However, various stresses decrease flax production. Search for genes, which are involved in stress response, is necessary for breeding of adaptive cultivars. Imbalanced concentration of nutrient elements in soil decrease flax yields and also results in heritable changes in some flax lines. The appearance of Linum Insertion Sequence 1 (LIS-1) is the most studied modification...
November 16, 2016: BMC Plant Biology
https://www.readbyqxmd.com/read/28105939/evolution-of-mitochondrial-genomes-in-baikalian-amphipods
#13
Elena V Romanova, Vladimir V Aleoshin, Ravil M Kamaltynov, Kirill V Mikhailov, Maria D Logacheva, Elena A Sirotinina, Alexander Yu Gornov, Anton S Anikin, Dmitry Yu Sherbakov
BACKGROUND: Amphipods (Crustacea) of Lake Baikal are a very numerous and diverse group of invertebrates generally believed to have originated by adaptive radiation. The evolutionary history and phylogenetic relationships in Baikalian amphipods still remain poorly understood. Sequencing of mitochondrial genomes is a relatively feasible way for obtaining a set of gene sequences suitable for robust phylogenetic inferences. The architecture of mitochondrial genomes also may provide additional information on the mechanisms of evolution of amphipods in Lake Baikal...
December 28, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28105932/genes-of-susceptibility-to-early-neurodegenerative-changes-in-the-rat-retina-and-brain-analysis-by-means-of-congenic-strains
#14
Elena E Korbolina, Anna A Zhdankina, Anzhela Zh Fursova, Oyuna S Kozhevnikova, Natalia G Kolosova
BACKGROUND: There has been considerable interest in discovery of the genetic architecture of complex traits, particularly age-related neurodegenerative disorders. To predict disease risk and to understand its genetic basis in humans, it is necessary to study animal models. Our previous research on the accelerated-senescence OXYS strain has revealed two quantitative trait loci (QTLs) on rat chromosome 1 that are associated with early cataract and/or retinopathy as well as with behavioral abnormalities...
December 22, 2016: BMC Genetics
https://www.readbyqxmd.com/read/28105550/stable-isotope-labeling-for-improved-comparative-analysis-of-rna-digests-by-mass-spectrometry
#15
Mellie June Paulines, Patrick A Limbach
Even with the advent of high throughput methods to detect modified ribonucleic acids (RNAs), mass spectrometry remains a reliable method to detect, characterize, and place post-transcriptional modifications within an RNA sequence. Here we have developed a stable isotope labeling comparative analysis of RNA digests (SIL-CARD) approach, which improves upon the original (18)O/(16)O labeling CARD method. Like the original, SIL-CARD allows sequence or modification information from a previously uncharacterized in vivo RNA sample to be obtained by direct comparison with a reference RNA, the sequence of which is known...
January 19, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28104295/systematic-drug-sensitivity-testing-reveals-synergistic-growth-inhibition-by-dasatinib-or-mtor-inhibitors-with-paclitaxel-in-ovarian-granulosa-cell-tumor-cells
#16
Ulla-Maija Haltia, Noora Andersson, Bhagwan Yadav, Anniina Färkkilä, Evgeny Kulesskiy, Matti Kankainen, Jing Tang, Ralf Bützow, Annika Riska, Arto Leminen, Markku Heikinheimo, Olli Kallioniemi, Leila Unkila-Kallio, Krister Wennerberg, Tero Aittokallio, Mikko Anttonen
OBJECTIVE: Resistance to standard chemotherapy poses a major clinical problem in the treatment of ovarian cancer patients. Adult-type granulosa cell tumor (AGCT) is a unique ovarian cancer subtype for which efficient treatment options are lacking in advanced disease. To this end, systematic drug response and transcriptomics profiling were performed to uncover new therapy options for AGCTs. METHODS: The responses of three primary and four recurrent AGCTs to 230 anticancer compounds were screened in vitro using a systematic drug sensitivity and resistance testing (DSRT) platform, coupled with mRNA sequencing...
January 16, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28103917/a-fast-and-robust-protocol-for-metataxonomic-analysis-using-rnaseq-data
#17
Jeremy W Cox, Richard A Ballweg, Diana H Taft, Prakash Velayutham, David B Haslam, Aleksey Porollo
BACKGROUND: Metagenomics is a rapidly emerging field aimed to analyze microbial diversity and dynamics by studying the genomic content of the microbiota. Metataxonomics tools analyze high-throughput sequencing data, primarily from 16S rRNA gene sequencing and DNAseq, to identify microorganisms and viruses within a complex mixture. With the growing demand for analysis of the functional microbiome, metatranscriptome studies attract more interest. To make metatranscriptomic data sufficient for metataxonomics, new analytical workflows are needed to deal with sparse and taxonomically less informative sequencing data...
January 19, 2017: Microbiome
https://www.readbyqxmd.com/read/28103681/observing-biosynthetic-activity-utilizing-next-generation-sequencing-and-the-dna-linked-enzyme-coupled-assay
#18
Markus de Raad, Cyrus Modavi, David J Sukovich, J Christopher Anderson
Currently, the identification of new genes drastically outpaces current experimental methods for determining their enzymatic function. This disparity necessitates the development of high-throughput techniques that operate with the same scalability as modern gene synthesis and sequencing technologies. In this paper, we demonstrate the versatility of the recently reported DNA-Linked Enzyme-Coupled Assay (DLEnCA) and its ability to support high-throughput data acquisition through next-generation sequencing (NGS)...
January 20, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28103239/identifying-t-cell-receptors-from-high-throughput-sequencing-dealing-with-promiscuity-in-tcr%C3%AE-and-tcr%C3%AE-pairing
#19
Edward S Lee, Paul G Thomas, Jeff E Mold, Andrew J Yates
Characterisation of the T cell receptors (TCR) involved in immune responses is important for the design of vaccines and immunotherapies for cancer and autoimmune disease. The specificity of the interaction between the TCR heterodimer and its peptide-MHC ligand derives largely from the juxtaposed hypervariable CDR3 regions on the TCRα and TCRβ chains, and obtaining the paired sequences of these regions is a standard for functionally defining the TCR. A brute force approach to identifying the TCRs in a population of T cells is to use high-throughput single-cell sequencing, but currently this process remains costly and risks missing small clones...
January 19, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28103009/fully-automated-one-step-synthesis-of-single-transcript-talen-pairs-using-a-biological-foundry
#20
Ran Chao, Jing Liang, Ipek Tasan, Tong Si, Linyang Ju, Huimin Zhao
Transcription activator-like effector nuclease (TALEN) is a programmable genome editing tool with wide applications. Since TALENs perform cleavage of DNA as heterodimers, a pair of TALENs must be synthesized for each target genome locus. Conventionally, TALEN pairs are either expressed on separate vectors or synthesized separately and then subcloned to the same vector. Neither approach allows high-throughput construction of TALEN libraries for large-scale applications. Here we present an assembly scheme to synthesize and express a pair of TALENs in a single transcript format with the help of a P2A self-cleavage sequence...
January 19, 2017: ACS Synthetic Biology
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