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https://www.readbyqxmd.com/read/28817564/cell-cycle-related-kinase-ccrk-regulates-ciliogenesis-and-hedgehog-signaling-in-mice
#1
Ashley Snouffer, Desmond Brown, Hankyu Lee, Jonathon Walsh, Floria Lupu, Ryan Norman, Karl Lechtreck, Hyuk Wan Ko, Jonathan Eggenschwiler
The Hedgehog (Hh) signaling pathway plays a key role in cell fate specification, proliferation, and survival during mammalian development. Cells require a small organelle, the primary cilium, to respond properly to Hh signals and the key regulators of Hh signal transduction exhibit dynamic localization to this organelle when the pathway is activated. Here, we investigate the role of Cell Cycle Related kinase (CCRK) in regulation of cilium-dependent Hh signaling in the mouse. Mice mutant for Ccrk exhibit a variety of developmental defects indicative of inappropriate regulation of this pathway...
August 17, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28817360/closing-the-gap-mouse-models-to-study-adhesion-in-secondary-palatogenesis
#2
K J Lough, K M Byrd, D C Spitzer, S E Williams
Secondary palatogenesis occurs when the bilateral palatal shelves (PS), arising from maxillary prominences, fuse at the midline, forming the hard and soft palate. This embryonic phenomenon involves a complex array of morphogenetic events that require coordinated proliferation, apoptosis, migration, and adhesion in the PS epithelia and underlying mesenchyme. When the delicate process of craniofacial morphogenesis is disrupted, the result is orofacial clefting, including cleft lip and cleft palate (CL/P). Through human genetic and animal studies, there are now hundreds of known genetic alternations associated with orofacial clefts; so, it is not surprising that CL/P is among the most common of all birth defects...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28817310/semaphorins-and-their-roles-in-airway-biology-potential-as-therapeutic-targets
#3
Hesam Movassagh, Forough Khadem, Abdelilah S Gounni
Semaphorins are a large family of proteins originally identified as axon guidance cues which play a crucial role in neural development. They are also ubiquitously expressed beyond the nervous system and contribute to regulation of essential cell functions such as cell migration, proliferation, and adhesion. Binding of semaphorins to their receptors, including plexins and neuropilins, triggers diverse signaling pathways which are involved in the pathogenesis of various diseases from cancer to autoimmune and allergic disorders...
August 17, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28817121/meganuclease-assisted-generation-of-stable-transgenics-in-the-sea-anemone-nematostella-vectensis
#4
Eduard Renfer, Ulrich Technau
The sea anemone Nematostella vectensis is a model system used by a rapidly growing research community for comparative genomics, developmental biology and ecology. Here, we describe a microinjection procedure for creating stable transgenic lines in Nematostella based on meganuclease (I-SceI)-assisted integration of a transgenic cassette into the genome. The procedure describes the preparation of the reagents, microinjection of the transgenesis vector and the husbandry of transgenic animals. The microinjection setup differs from those of previously published protocols by the use of a holding capillary mounted on an inverted fluorescence microscope...
September 2017: Nature Protocols
https://www.readbyqxmd.com/read/28815806/evaluation-in-zebrafish-model-of-the-toxicity-of-rhodamine-b-conjugated-crotamine-a-peptide-potentially-useful-for-diagnostics-and-therapeutics
#5
Judy Yuet-Wa Chan, Hefeng Zhou, Yiu Wa Kwan, Shun Wan Chan, Gandhi Radis-Baptista, Simon Ming-Yuen Lee
Crotamine is defensin-like cationic peptide from rattlesnake venom that possesses anticancer, antimicrobial, and antifungal properties. Despite these promising biological activities, toxicity is a major concern associated with the development of venom-derived peptides as therapeutic agents. In the present study, we used zebrafish as a system model to evaluate the toxicity of rhodamine B-conjugated (RhoB) crotamine derivative. The lethal toxic concentration of RhoB-crotamine was as low as 4 μM, which effectively kill zebrafish larvae in less than 10 min...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28814538/implications-of-the-fmr1-premutation-for-children-adolescents-adults-and-their-families
#6
Anne Wheeler, Melissa Raspa, Randi Hagerman, Marsha Mailick, Catharine Riley
BACKGROUND AND OBJECTIVES: Given the nature of FMR1 gene expansions, most biological mothers, and often multiple other family members of children with fragile X syndrome (FXS), will have a premutation, which may increase individual and family vulnerabilities. This article summarizes important gaps in knowledge and notes potential implications for pediatric providers with regard to developmental and medical risks for children and adolescents with an FMR1 premutation, including possible implications into adulthood...
June 2017: Pediatrics
https://www.readbyqxmd.com/read/28813466/comprehensive-comparison-of-neonate-and-adult-human-platelet-transcriptomes
#7
Eva Caparrós-Pérez, Raúl Teruel-Montoya, Mª José López-Andreo, Mª Carmen Llanos, José Rivera, Verónica Palma-Barqueros, Jose E Blanco, Vicente Vicente, Constantino Martínez, Francisca Ferrer-Marín
Understanding the underlying mechanisms of the well-substantiated platelet hyporeactivity in neonates is of interest given their implications for the clinical management of newborns, a population at higher bleeding risk than adults (especially sick and preterm infants), as well as for gaining insight into the regulatory mechanisms of platelet biology. Transcriptome analysis is useful in identifying mRNA signatures affecting platelet function. However, human fetal/neonatal platelet transcriptome analysis has never before been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28813293/effects-of-relationship-functioning-on-the-biological-experience-of-stress-and-physical-health
#8
REVIEW
Allison K Farrell, Jeffry A Simpson
In this paper, we outline how relationship functioning affects the biological experience of stress and its consequences for physical health. Negative relationship perceptions and processes, such as attachment insecurity, hostility, and frequent conflict, tend to heighten stress responses and generate worse health over time, whereas positive relationship perceptions and processes, such as responsiveness, support, and intimacy, are generally associated with reduced or buffered stress responses and improved health (with some caveats)...
February 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813254/adapting-to-the-changing-needs-of-adolescents-parenting-practices-and-challenges-to-sensitive-attunement
#9
REVIEW
Roger Kobak, Caroline Abbott, Abigail Zisk, Nadia Bounoua
Changes in adolescents' motivations and capabilities pose unique challenges to parents who play a continuing role in ensuring the youth's safety and well-being. We describe sensitively attuned parenting as an optimal response to this challenge and summarize practices of positive engagement, supervision/guidance and open communication that support sensitive attunement and facilitate the continuing development of the adolescent's self-confidence, autonomous decision-making, and communication skills. We then consider factors that require parents to adapt their practices to the particular needs and developmental level of the adolescent...
June 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813178/centriole-biogenesis-from-identifying-the-characters-to-understanding-the-plot
#10
Niccolò Banterle, Pierre Gönczy
The centriole is a beautiful microtubule-based organelle that is critical for the proper execution of many fundamental cellular processes, including polarity, motility, and division. Centriole biogenesis, the making of this miniature architectural wonder, has emerged as an exemplary model to dissect the mechanisms governing the assembly of a eukaryotic organelle. Centriole biogenesis relies on a set of core proteins whose contributions to the assembly process have begun to be elucidated. Here, we review current knowledge regarding the mechanisms by which these core characters function in an orderly fashion to assemble the centriole...
August 16, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28813177/how-single-cell-genomics-is-changing-evolutionary-and-developmental-biology
#11
John C Marioni, Detlev Arendt
The recent flood of single-cell data not only boosts our knowledge of cells and cell types, but also provides new insight into development and evolution from a cellular perspective. For example, assaying the genomes of multiple cells during development reveals developmental lineage trees-the kinship lineage-whereas cellular transcriptomes inform us about the regulatory state of cells and their gradual restriction in potency-the Waddington lineage. Beyond that, the comparison of single-cell data across species allows evolutionary changes to be tracked at all stages of development from the zygote, via different kinds of stem cells, to the differentiating cells...
August 16, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28812712/developmental-biology-formation-of-hybrid-myocardial-zone
#12
Karina Huynh
No abstract text is available yet for this article.
August 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28812685/scallop-genome-provides-insights-into-evolution-of-bilaterian-karyotype-and-development
#13
Shi Wang, Jinbo Zhang, Wenqian Jiao, Ji Li, Xiaogang Xun, Yan Sun, Ximing Guo, Pin Huan, Bo Dong, Lingling Zhang, Xiaoli Hu, Xiaoqing Sun, Jing Wang, Chengtian Zhao, Yangfan Wang, Dawei Wang, Xiaoting Huang, Ruijia Wang, Jia Lv, Yuli Li, Zhifeng Zhang, Baozhong Liu, Wei Lu, Yuanyuan Hui, Jun Liang, Zunchun Zhou, Rui Hou, Xue Li, Yunchao Liu, Hengde Li, Xianhui Ning, Yu Lin, Liang Zhao, Qiang Xing, Jinzhuang Dou, Yangping Li, Junxia Mao, Haobing Guo, Huaiqian Dou, Tianqi Li, Chuang Mu, Wenkai Jiang, Qiang Fu, Xiaoteng Fu, Yan Miao, Jian Liu, Qian Yu, Ruojiao Li, Huan Liao, Xuan Li, Yifan Kong, Zhi Jiang, Daniel Chourrout, Ruiqiang Li, Zhenmin Bao
Reconstructing the genomes of bilaterian ancestors is central to our understanding of animal evolution, where knowledge from ancient and/or slow-evolving bilaterian lineages is critical. Here we report a high-quality, chromosome-anchored reference genome for the scallop Patinopecten yessoensis, a bivalve mollusc that has a slow-evolving genome with many ancestral features. Chromosome-based macrosynteny analysis reveals a striking correspondence between the 19 scallop chromosomes and the 17 presumed ancestral bilaterian linkage groups at a level of conservation previously unseen, suggesting that the scallop may have a karyotype close to that of the bilaterian ancestor...
April 3, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812673/craniofacial-diversification-in-the-domestic-pigeon-and-the-evolution-of-the-avian-skull
#14
Nathan M Young, Marta Linde-Medina, John W Fondon, Benedikt Hallgrímsson, Ralph S Marcucio
A central question in evolutionary developmental biology is how highly conserved developmental systems can generate the remarkable phenotypic diversity observed among distantly related species. In part, this paradox reflects our limited knowledge about the potential for species to both respond to selection and generate novel variation. Consequently, the developmental links between small-scale microevolutionary variations within populations to larger macroevolutionary patterns among species remain unbridged...
March 13, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812669/the-evo-devo-of-plant-speciation
#15
REVIEW
Mario Fernández-Mazuecos, Beverley J Glover
Speciation research bridges the realms of macro- and microevolution. Evolutionary developmental biology (evo-devo) has classically dealt with macroevolutionary questions through a comparative approach to distantly related organisms, but the field later broadened in focus to address recent speciation and microevolution. Here we review available evidence of the power of evo-devo approaches to understand speciation in plants at multiple scales. At a macroevolutionary scale, evidence is accumulating for evolutionary developmental mechanisms giving rise to key innovations promoting speciation...
March 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812602/prenatal-development-supports-a-single-origin-of-laryngeal-echolocation-in-bats
#16
Zhe Wang, Tengteng Zhu, Huiling Xue, Na Fang, Junpeng Zhang, Libiao Zhang, Jian Pang, Emma C Teeling, Shuyi Zhang
Bat laryngeal echolocation is considered as one of the most complex and diverse modes of auditory sensory perception in animals and its evolutionary history has been the cause of many scientific controversies in the past two decades. To date, the majority of scientific evidence supports that bats (Chiroptera) are divided into two subordinal groups: Yinpterochiroptera, containing the laryngeal echolocating superfamily Rhinolophidae as sister taxa to the non-laryngeal echolocating family Pteropodidae; and Yangochiroptera, containing all other laryngeal echolocating lineages...
January 9, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812058/environmental-pollutants-and-neurodevelopment-review-of-benefits-from-closure-of-a-coal-burning-power-plant-in-tongliang-china
#17
Vrinda Kalia, Frederica Perera, Deliang Tang
Background. Understanding preventable causes of neurodevelopmental disorders is a public health priority. Polycyclic aromatic hydrocarbons (PAH) from combustion of fossil fuel, lead, and mercury are among known neurodevelopmental toxicants. Method. For the first time, we comprehensively review the findings from a study by the Columbia Center for Children's Environmental Health and Chinese partners that followed 2 groups of mother-child pairs, one from 2002 and another from 2005, in Tongliang County, China. Pregnant mothers in the 2 cohorts experienced different exposure to PAH because a local coal-burning power plant was shut down in 2004...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28811525/totipotency-segregates-between-the-sister-blastomeres-of-two-cell-stage-mouse-embryos
#18
E Casser, S Israel, A Witten, K Schulte, S Schlatt, V Nordhoff, M Boiani
Following fertilization in mammals, it is generally accepted that totipotent cells are exclusive to the zygote and to each of the two blastomeres originating from the first mitotic division. This model of totipotency was inferred from a minority of cases in which blastomeres produced monozygotic twins in mice. Was this due to experimental limitation or biological constraint? Here we removed experimental obstacles and achieved reliable quantification of the prevalence of dual totipotency among mouse two-cell stage blastomeres...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811307/an-interview-with-jenny-nichols
#19
Aidan Maartens
Jennifer Nichols is a Principal Investigator at the Cambridge Stem Cell Institute and Department of Physiology, Development and Neuroscience at the University of Cambridge, UK. Her lab works on lineage segregation and the establishment of pluripotency in the mammalian embryo. In 2017 she was awarded the British Society for Developmental Biology's Cheryll Tickle Medal, given to mid-career female scientists with outstanding achievements in developmental biology. We met Jenny in her Cambridge office to talk about pluripotency in vitro and in vivo, the importance of collaboration in her career path, and what playing a musical instrument has in common with research...
August 15, 2017: Development
https://www.readbyqxmd.com/read/28809975/discovery-of-synthetic-small-molecules-that-enhance-the-number-of-stomata-c-h-functionalization-chemistry-for-plant-biology
#20
Asraa Ziadi, Naoyuki Uchida, Hiroe Kato, Rina Hisamatsu, Ayato Sato, Shinya Hagihara, Kenichiro Itami, Keiko U Torii
The increasing climate changes and global warming are leading to colossal agricultural problems such as abatement of food production and quality. As stomatal development is considered to play a key role in crop plant productivity and water-use efficiency, studying stomatal development is useful for understanding the productivity of plant systems for both natural and agricultural systems. Herein, we report the first-in-class synthetic small molecules enhancing the number of stomata in Arabidopsis thaliana that have been discovered by screening of the chemical library and further optimized by the Pd-catalyzed C-H arylation reaction...
August 15, 2017: Chemical Communications: Chem Comm
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