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developmental biology

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https://www.readbyqxmd.com/read/28651237/the-many-postures-of-noncanonical-wnt-signaling-in-development-and-diseases
#1
REVIEW
Qian Xiao, Zhengxi Chen, Xiaozhuang Jin, Runyi Mao, Zhenqi Chen
Wnt signaling regulates many aspects of vertebrate development. Its dysregulation causes developmental defects and diseases including cancer. The signaling can be categorized in two pathways: canonical and noncanonical. Canonical pathway plays a key role in regulating proliferation and differentiation of cells whilst noncanonical Wnt signaling mainly controls cellular polarity and motility. During development, noncanonical Wnt signaling is required for tissue formation. Recent studies have shown that noncanonical Wnt signaling is involved in adult tissue development and cancer progression...
June 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28649442/next-generation-mammalian-genetics-toward-organism-level-systems-biology
#2
REVIEW
Etsuo A Susaki, Hideki Ukai, Hiroki R Ueda
Organism-level systems biology in mammals aims to identify, analyze, control, and design molecular and cellular networks executing various biological functions in mammals. In particular, system-level identification and analysis of molecular and cellular networks can be accelerated by next-generation mammalian genetics. Mammalian genetics without crossing, where all production and phenotyping studies of genome-edited animals are completed within a single generation drastically reduce the time, space, and effort of conducting the systems research...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28649393/single-cell-transcriptome-of-early-embryos-and-cultured-embryonic-stem-cells-of-cynomolgus-monkeys
#3
Tomonori Nakamura, Yukihiro Yabuta, Ikuhiro Okamoto, Kotaro Sasaki, Chizuru Iwatani, Hideaki Tsuchiya, Mitinori Saitou
In mammals, the development of pluripotency and specification of primordial germ cells (PGCs) have been studied predominantly using mice as a model organism. However, divergences among mammalian species for such processes have begun to be recognized. Between humans and mice, pre-implantation development appears relatively similar, but the manner and morphology of post-implantation development are significantly different. Nevertheless, the embryogenesis just after implantation in primates, including the specification of PGCs, has been unexplored due to the difficulties in analyzing the embryos at relevant developmental stages...
2017: Scientific Data
https://www.readbyqxmd.com/read/28649369/recent-advances-in-understanding-contextual-tgf%C3%AE-signaling
#4
REVIEW
Arshad Ayyaz, Liliana Attisano, Jeffrey L Wrana
The appearance of the first animal species on earth coincides with the emergence of transforming growth factor β (TGFβ) pathways. The evolution of these animals into more complex organisms coincides with a progressively increased TGFβ repertoire through gene duplications and divergence, making secreted TGFβ molecules the largest family of morphogenetic proteins in humans. It is therefore not surprising that TGFβ pathways govern numerous aspects of human biology from early embryonic development to regeneration, hematopoiesis, neurogenesis, and immunity...
2017: F1000Research
https://www.readbyqxmd.com/read/28649263/survey-of-high-throughput-rna-seq-data-reveals-potential-roles-for-lncrnas-during-development-and-stress-response-in-bread-wheat
#5
Shumayla, Shailesh Sharma, Mehak Taneja, Shivi Tyagi, Kashmir Singh, Santosh K Upadhyay
Long non-coding RNAs (lncRNAs) are a family of regulatory RNAs that play essential role in the various developmental processes and stress responses. Recent advances in sequencing technology and computational methods enabled identification and characterization of lncRNAs in certain plant species, but they are less known in Triticum aestivum (bread wheat). Herein, we analyzed 52 RNA seq data (>30 billion reads) and identified 44,698 lncRNAs in T. aestivum genome, which were characterized in comparison to the coding sequences (mRNAs)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649260/tomato-udp-glucose-sterol-glycosyltransferases-a-family-of-developmental-and-stress-regulated-genes-that-encode-cytosolic-and-membrane-associated-forms-of-the-enzyme
#6
Karla Ramirez-Estrada, Nídia Castillo, Juan A Lara, Monserrat Arró, Albert Boronat, Albert Ferrer, Teresa Altabella
Sterol glycosyltransferases (SGTs) catalyze the glycosylation of the free hydroxyl group at C-3 position of sterols to produce sterol glycosides. Glycosylated sterols and free sterols are primarily located in cell membranes where in combination with other membrane-bound lipids play a key role in modulating their properties and functioning. In contrast to most plant species, those of the genus Solanum contain very high levels of glycosylated sterols, which in the case of tomato may account for more than 85% of the total sterol content...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649254/pattern-of-protein-expression-in-developing-wheat-grains-identified-through-proteomic-analysis
#7
Mingming Yang, Xiang Gao, Jian Dong, Nitant Gandhi, Huanjie Cai, Diter H von Wettstein, Sachin Rustgi, Shanshan Wen
Grain development is one of the biological processes, which contributes to the final grain yield. To understand the molecular changes taking place during the early grain development, we profiled proteomes of two common wheat cultivars P271 and Chinese Spring (CS) with large and small grains, respectively at three grain developmental stages (4, 8, and 12 days post anthesis). An iTRAQ (isobaric tags for relative and absolute quantitation) based proteomics approach was used for this purpose. More than 3,600 proteins were reported to accumulate during early grain development in both wheat cultivars...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28649046/transgenerational-endocrine-disruption-and-neurotoxicity-in-zebrafish-larvae-after-parental-exposure-to-binary-mixtures-of-decabromodiphenyl-ether-bde-209-and-lead
#8
Lianguo Chen, Xianfeng Wang, Xiaohua Zhang, Paul K S Lam, Yongyong Guo, James C W Lam, Bingsheng Zhou
Polybrominated diphenyl ethers (PBDEs) and heavy metals are two key groups of electric and electronic equipment contaminants. Despite their co-occurrence in aquatic environments, their combined effects remain largely unknown, particularly under a chronic exposure regime. In the present study, adult zebrafish (Danio rerio) were exposed to environmentally relevant concentrations of BDE-209 and lead (Pb), or their binary mixtures, for 3 months. After chronic parental exposure, increased transfer of BDE-209 and Pb to the offspring eggs was activated in the coexposure groups, with BDE-197 being the predominant PBDE congener, indicating the dynamic metabolism of BDE-209 in parental zebrafish...
June 22, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28647896/omics-based-hybrid-prediction-in-maize
#9
Matthias Westhues, Tobias A Schrag, Claas Heuer, Georg Thaller, H Friedrich Utz, Wolfgang Schipprack, Alexander Thiemann, Felix Seifert, Anita Ehret, Armin Schlereth, Mark Stitt, Zoran Nikoloski, Lothar Willmitzer, Chris C Schön, Stefan Scholten, Albrecht E Melchinger
Complementing genomic data with other "omics" predictors can increase the probability of success for predicting the best hybrid combinations using complex agronomic traits. Accurate prediction of traits with complex genetic architecture is crucial for selecting superior candidates in animal and plant breeding and for guiding decisions in personalized medicine. Whole-genome prediction has revolutionized these areas but has inherent limitations in incorporating intricate epistatic interactions. Downstream "omics" data are expected to integrate interactions within and between different biological strata and provide the opportunity to improve trait prediction...
June 24, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28646471/decoding-early-myelopoiesis-from-dynamics-of-core-endogenous-network
#10
Hang Su, Gaowei Wang, Ruoshi Yuan, Junqiang Wang, Ying Tang, Ping Ao, Xiaomei Zhu
A decade ago mainstream molecular biologists regarded it impossible or biologically ill-motivated to understand the dynamics of complex biological phenomena, such as cancer genesis and progression, from a network perspective. Indeed, there are numerical difficulties even for those who were determined to explore along this direction. Undeterred, seven years ago a group of Chinese scientists started a program aiming to obtain quantitative connections between tumors and network dynamics. Many interesting results have been obtained...
May 29, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28646043/an-efficient-flp-based-toolkit-for-spatiotemporal-control-of-gene-expression-in-caenorhabditis-elegans
#11
Celia María Muñoz-Jiménez, Cristina Ayuso, Agnieszka Dobrzynska, Antonio Torres, Patricia de la Cruz Ruiz, Peter Askjaer
Site-specific recombinases are potent tools to regulate gene expression. In particular, the Cre and FLP enzymes are widely used to either activate or inactivate genes in a precise spatiotemporal manner. Both recombinases work efficiently in the popular model organism Caenorhabditis elegans but their use in this nematode is still only sporadic. To increase the utility of the FLP system in C. elegans we have generated a series of single-copy transgenic strains that stably express an optimized version of FLP in specific tissues or by heat induction...
June 23, 2017: Genetics
https://www.readbyqxmd.com/read/28645217/microtubule-organizing-centers
#12
Jingchao Wu, Anna Akhmanova
The organization of microtubule networks is crucial for controlling chromosome segregation during cell division, positioning, and transport of different organelles and for cell polarity and morphogenesis. The geometry of microtubule arrays strongly depends on the localization and activity of the sites where microtubules are nucleated and where their minus ends are anchored. Such sites are often clustered into structures known as microtubule-organizing centers, which include the centrosomes in animals and spindle pole bodies in fungi...
June 23, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28645086/toddler-exposure-to-flame-retardant-chemicals-magnitude-health-concern-and-potential-risk-or-protective-factors-of-exposure-observational-studies-summarized-in-a-systematic-review
#13
REVIEW
Eva J Sugeng, Marijke de Cock, Linda J Schoonmade, Margot van de Bor
Endocrine disrupting flame retardant (FR) chemicals form a human health concern, that is investigated mostly from the perspective of adult- and early life exposure. No overview of studies on toddler exposure and health effects exist. However, toddlerhood is a critical developmental period and toddlers are at increased risk for exposure because of their age-specific behavior. This systematic review encompasses toddler FR exposure studies in three countries, associated health effects and potential environmental, demographic, or behavioral risk- or protective factors for toddler exposure...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28644917/an-oxygen-isotope-chronometer-for-cellulose-deposition-the-successive-leaves-formed-by-tillers-of-a-c4-perennial-grass
#14
Hai Tao Liu, Fang Yang, Xiao Ying Gong, Rudi Schäufele, Hans Schnyder
Multiannual time series of (palaeo)hydrological information can be reconstructed from the oxygen isotope composition of cellulose (δ(18) OCel ) in biological archives, e.g. tree-rings, but our ability to temporally resolve information at subannual scale is limited. We capitalized on the short and predictable leaf appearance interval (2.4 d) of a perennial C4 grass (Cleistogenes squarrosa), to assess its potential for providing highly time-resolved δ(18) OCel records of vapor pressure deficit (VPD). Plants grown at low (0...
June 23, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28644443/unexpected-genomic-features-in-widespread-intracellular-bacteria-evidence-for-motility-of-marine-chlamydiae
#15
Astrid Collingro, Stephan Köstlbacher, Marc Mussmann, Ramunas Stepanauskas, Steven J Hallam, Matthias Horn
Chlamydiae are obligate intracellular bacteria comprising important human pathogens and symbionts of protists. Molecular evidence indicates a tremendous diversity of chlamydiae particularly in marine environments, yet our current knowledge is based mainly on terrestrial representatives. Here we provide first insights into the biology of marine chlamydiae representing three divergent clades. Our analysis of single-cell amplified genomes revealed hallmarks of the chlamydial lifestyle, supporting the ancient origin of their characteristic developmental cycle and major virulence mechanisms...
June 23, 2017: ISME Journal
https://www.readbyqxmd.com/read/28644430/the-clinical-landscape-for-sma-in-a-new-therapeutic-era
#16
REVIEW
K Talbot, E F Tizzano
Despite significant advances in basic research, the treatment of degenerative diseases of the nervous system remains one of the greatest challenges for translational medicine. The childhood onset motor neuron disorder spinal muscular atrophy (SMA) has been viewed as one of the more tractable targets for molecular therapy, due to a detailed understanding of the molecular genetic basis of the disease. In SMA, inactivating mutations in the SMN1 gene can be partially compensated for by limited expression of SMN protein from a variable number of copies of the SMN2 gene, which provides both a molecular explanation for phenotypic severity and a target for therapy...
June 23, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28643260/a-simple-protocol-for-loss-of-function-analysis-in-xenopus-tropicalis-founders-using-the-crispr-cas-system
#17
Yuto Sakane, Ken-Ich T Suzuki, Takashi Yamamoto
Xenopus tropicalis is a versatile model organism for studying basic biology such as developmental biology and cell biology, and for biomedical research on human diseases. Current genome editing techniques enable researchers to easily perform gene targeting in various animals. Among them, gene knockout using the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR-associated (Cas) (CRISPR-Cas) system has recently become an indispensable strategy for loss-of-function analysis in vivo. Because of its ease of use, time, and cost efficiencies, CRISPR-Cas has also been applied to X...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28642720/depressive-symptomatology-among-norwegian-adolescent-boys-and-girls-the-patient-health-questionnaire-9-phq-9-psychometric-properties-and-correlates
#18
Jasmina Burdzovic Andreas, Geir S Brunborg
This study explored the potential contribution of the Diagnostic and Statistical Manual for Mental Disorders (DSM-IV)-based Patient Health Questionnaire-9 item (PHQ-9) instrument to the developmental epidemiology research in Norway, by examining depressive symptoms in a school sample of adolescents (N = 846). The average PHQ-9 scores were 6.89 (SD = 5.13) for girls, and 4.57 (SD = 3.98) for boys; 8.5% of girls and 2.6% of boys were classified into the originally proposed categories indicative of Major Depressive Disorder (MDD; PHQ-9 scores ≥ 15)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28641164/protective-effects-of-flavonoids-against-alzheimer-s-disease-related-neural-dysfunctions
#19
REVIEW
Mahsa Bakhtiari, Yunes Panahi, Javad Ameli, Behrad Darvishi
Senile ages of human life is mostly associated with developmental of several neurological complicated conditions including decreased cognition and reasoning, increased memory loss and impaired language performance. Alzheimer's disease (AD) is the most prevalent neural disorder associated with dementia, consisting of about 70% of dementia reported cases. Failure of currently approved chemical anti-AD therapeutic agents has once again brought up the idea of administering naturally occurring compounds as effective alternative and/or complementary regimens in AD treatment...
June 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28641117/structural-components-of-nuclear-integrity-with-gene-regulatory-potential
#20
REVIEW
Kelli D Fenelon, Sevan Hopyan
The nucleus is a mechanosensitive and load-bearing structure. Structural components of the nucleus interact to maintain nuclear integrity and have become subjects of exciting research that is relevant to cell and developmental biology. Here we outline the boundaries of what is known about key architectural elements within the nucleus and highlight their potential structural and transcriptional regulatory functions.
June 19, 2017: Current Opinion in Cell Biology
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