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Developmental Dynamics: An Official Publication of the American Association of Anatomists

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https://www.readbyqxmd.com/read/29226547/avian-embryonic-coronary-arterio-venous-pattering-involves-the-contribution-of-different-endothelial-and-endocardial-cell-populations
#1
Paul Palmquist-Gomes, Juan Antonio Guadix, José M Pérez-Pomares
BACKGROUND: Coronary vasculature irrigates the myocardium and is crucial to late embryonic and adult heart function. Despite the developmental significance and clinical relevance of these blood vessels, the embryonic origin and the cellular and molecular mechanisms that regulate coronary arterio-venous patterning are not known in detail. In this study, we have used the avian embryo to dissect the ontogenetic origin and morphogenesis of coronary vasculature. RESULTS: We show that sinus venosus endocardial sprouts and proepicardial angioblasts pioneer coronary vascular formation, invading the developing heart simultaneously...
December 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29226543/maternal-immune-activation-in-neurodevelopmental-disorders
#2
REVIEW
Cynthia M Solek, Nasr Farooqi, Myriam Verly, Tony K Lim, Edward S Ruthazer
Converging lines of evidence from basic science and clinical studies suggest a relationship between maternal immune activation (MIA) and neurodevelopmental disorders such as autism spectrum disorder (ASD) and schizophrenia. The mechanisms through which MIA increases the risk of neurodevelopmental disorders have become a subject of intensive research. This review aims to describe how dysregulation of microglial function and immune mechanisms may link MIA and neurodevelopmental pathologies. We also summarize the current evidence in animal models of MIA...
December 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29226492/molecular-mechanisms-underlying-monosynaptic-sensory-motor-circuit-development-in-the-spinal-cord
#3
REVIEW
Fumiyasu Imai, Yutaka Yoshida
Motor behaviors are precisely controlled by the integration of sensory and motor systems in the central nervous system (CNS). Proprioceptive sensory neurons, key components of the sensory system, are located in the dorsal root ganglia and project axons both centrally to the spinal cord and peripherally to muscles and tendons, communicating peripheral information about the body to the CNS. Changes in muscle length detected by muscle spindles, and tension variations in tendons conveyed by golgi tendon organs, are communicated to the CNS through group Ia/II, and Ib proprioceptive sensory afferents, respectively...
December 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29226467/axon-guidance-pathways-and-the-control-of-gene-expression
#4
REVIEW
Samantha A Russell, Greg J Bashaw
Axons need to be properly guided to their targets to form synaptic connections, and this requires interactions between highly conserved extracellular and transmembrane ligands and their cell surface receptors. The majority of studies on axon guidance signaling pathways have focused on the role of these pathways in rearranging the local cytoskeleton and plasma membrane in growth cones and axons. However, a smaller body of work has demonstrated that axon guidance signaling pathways also control gene expression via local translation and transcription...
December 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29171103/adult-functions-for-the-drosophila-dhr78-nuclear-receptor
#5
Stefanie Marxreiter, Carl S Thummel
BACKGROUND: The Testicular Receptors 2 and 4 (TR2, TR4) comprise a small subfamily of orphan nuclear receptors. Genetic studies in mouse models have identified roles for TR4 in developmental progression, fertility, brain development, and metabolism, as well as genetic redundancy with TR2. Here we study the adult functions of the single Drosophila member of this subfamily, DHR78, with the goal of defining its ancestral functions in the absence of genetic redundancy. RESULTS: We show that DHR78 mutants have a shortened lifespan, reduced motility, and mated DHR78 mutant females display a reduced feeding rate...
November 24, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29139167/the-zinc-finger-gene-nolz1-regulates-the-formation-of-retinal-progenitor-cells-and-suppresses-the-lim3-lhx3-phenotype-of-retinal-bipolar-cells-in-chicken-retina
#6
Maria K E Blixt, Dardan Konjusha, Henrik Ring, Finn Hallböök
BACKGROUND: The zinc-finger transcription factor Nolz1 regulates spinal cord neuron development by interacting with the transcription factors Isl1, Lim1 and Lim3, which are also important for photoreceptors, horizontal and bipolar cells during retinal development. We therefore studied Nolz1 during retinal development. RESULTS: Nolz1 expression was seen in two waves during development: one early (peak at embryonic day 3-4.5) in retinal progenitors and one late (embryonic day 8) in newly differentiated cells in the inner nuclear layer...
November 15, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29139166/animal-models-of-fibrodysplasia-ossificans-progressiva
#7
REVIEW
Melissa LaBonty, Pamela C Yelick
No abstract text is available yet for this article.
November 15, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29115005/pten-regulates-neural-crest-proliferation-and-differentiation-during-mouse-craniofacial-development
#8
Tianfang Yang, Matthew Moore, Fenglei He
Background The Phosphatase and tensin homolog deleted on chromosome TEN (Pten) is implicated in a broad range of developmental events and diseases. However, its role in neural crest and craniofacial development has not been well illustrated. Results Using genetically engineered mouse models, we showed that inactivating Pten specifically in neural crest cells causes malformation of craniofacial structures. Pten conditional knockout mice exhibit perinatal lethality with overgrowth of craniofacial structures. At cellular level, Pten deficiency increases cell proliferation rate and enhances osteoblast differentiation...
November 8, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29106072/regulation-of-continuous-but-complex-expression-pattern-of-six1-during-early-sensory-development
#9
Shigeru Sato, Yasuhide Furuta, Kiyoshi Kawakami
BACKGROUND: In vertebrates, cranial sensory placodes give rise to neurosensory and endocrine structures such as the olfactory epithelium, inner ear and anterior pituitary. We report here the establishment of a transgenic mouse line that expresses Cre recombinase under the control of Six1-21, a major placodal enhancer of the homeobox gene Six1. RESULTS: In the new Cre-expressing line, mSix1-21-NLSCre, the earliest Cre-mediated recombination was induced at embryonic day 8...
November 6, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29090497/characterization-of-calbindin-d28k-expressing-interneurons-in-the-ventral-horn-of-the-mouse-spinal-cord
#10
Taylor L Floyd, Yiyun Dai, David R Ladle
BACKGROUND: Expression of the calcium binding protein, calbindin (CB), is well established as a hallmark of Renshaw cells, a class of interneurons found in spatially restricted areas in the ventral spinal cord that directly modulate motor neuron activity. CB expression, however, is not restricted only to Renshaw cells in the ventral horn, and within this population other interneuron subtypes may be identifiable on the basis of cell position and the potential for coexpression of other calcium binding proteins...
November 1, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29024245/hace1-influences-zebrafish-cardiac-development-via-ros-dependent-mechanisms
#11
Babak Razaghi, Shelby L Steele, Sergey V Prykhozhij, Matthew R Stoyek, Jessica A Hill, Matthew D Cooper, Lindsay Mcdonald, William Lin, Mads Daugaard, Nicolas Crapoulet, Simi Chacko, Stephen M Lewis, Ian C Scott, Poul H B Sorensen, Jason N Berman
BACKGROUND: In this study, we reveal a previously undescribed role of the HACE1 (HECT domain and Ankyrin repeat Containing E3 ubiquitin-protein ligase 1) tumor suppressor protein in normal vertebrate heart development using the zebrafish (Danio rerio) model. We examined the link between the cardiac phenotypes associated with hace1 loss of function to the expression of the Rho small family GTPase, rac1, which is a known target of HACE1 and promotes ROS production via its interaction with NADPH oxidase holoenzymes...
October 11, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28980356/remapping-the-microtubule-landscape-how-phosphorylation-dictates-the-activities-of-microtubule-associated-proteins
#12
REVIEW
Amrita Ramkumar, Brigette Y Jong, Kassandra M Ori-McKenney
Classical microtubule-associated proteins (MAPs) were originally identified based on their co-purification with microtubules assembled from mammalian brain lysate. They have since been found to perform a range of functions involved in regulating the dynamics of the microtubule cytoskeleton. Most of these MAPs play integral roles in microtubule organization during neuronal development, microtubule remodeling during neuronal activity, and microtubule stabilization during neuronal maintenance. As a result, mutations in MAPs contribute to neurodevelopmental disorders, psychiatric conditions, and neurodegenerative diseases...
October 4, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28975691/gut-feelings-studying-enteric-nervous-system-development-function-and-disease-in-the-zebrafish-model-system
#13
REVIEW
Julia Ganz
The enteric nervous system (ENS) is the largest part of the peripheral nervous system and is entirely neural crest-derived. It provides the intrinsic innervation of the gut, controlling different aspects of gut function, such as motility. In this review, we will discuss key points of Zebrafish ENS development, genes, and signaling pathways regulating ENS development, as well as contributions of the Zebrafish model system to better understand ENS disorders. During their migration, enteric progenitor cells (EPCs) display a gradient of developmental states based on their proliferative and migratory characteristics, and show spatiotemporal heterogeneity based on gene expression patterns...
October 4, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28975680/yolk-sac-erythromyeloid-progenitors-expressing-gain-of-function-ptpn11-have-functional-features-of-jmml-but-are-not-sufficient-to-cause-disease-in-mice
#14
Stefan P Tarnawsky, Momoko Yoshimoto, Lisa Deng, Rebecca J Chan, Mervin C Yoder
BACKGROUND: Accumulating evidence suggests the origin of juvenile myelomonocytic leukemia (JMML) is closely associated with fetal development. Nevertheless, the contribution of embryonic progenitors to JMML pathogenesis remains unexplored. We hypothesized that expression of JMML-initiating PTPN11 mutations in HSC-independent yolk sac erythromyeloid progenitors (YS EMPs) would result in a mouse model of pediatric myeloproliferative neoplasm (MPN). RESULTS: E9.5 YS EMPs from VavCre+;PTPN11(D61Y) embryos demonstrated growth hypersensitivity to granulocyte-macrophage colony-stimulating factor (GM-CSF) and hyperactive RAS-ERK signaling...
October 4, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28960588/prospects-for-new-lung-cancer-treatments-that-target-emt-signaling
#15
REVIEW
Yuji Otsuki, Hideyuki Saya, Yoshimi Arima
Lung cancer is the most common cancer worldwide. Treatment options for lung cancer include surgery, radiation therapy, chemotherapy, molecularly targeted therapy including epidermal growth factor receptor or anaplastic lymphoma kinase inhibitors, and immunotherapy. These treatments can be administered alone or in combination. Despite therapeutic advances, however, lung cancer remains the leading cause of cancer death. Recent studies have indicated that epithelial-mesenchymal transition (EMT) is associated with malignancy in various types of cancer, and activation of EMT signaling in cancer cells is widely considered to contribute to metastasis, recurrence, or therapeutic resistance...
September 27, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28940676/asymmetric-development-of-the-nervous-system
#16
REVIEW
Amel Alqadah, Yi-Wen Hsieh, Zachery D Morrissey, Chiou-Fen Chuang
The human nervous system consists of seemingly symmetric left and right halves. However, closer observation of the brain reveals anatomical and functional lateralization. Defects in brain asymmetry correlate with several neurological disorders, yet our understanding of the mechanisms used to establish lateralization in the human central nervous system is extremely limited. Here, we review left-right asymmetries within the nervous system of humans and several model organisms, including rodents, zebrafish, chickens, Xenopus, Drosophila, and the nematode Caenorhabditis elegans...
September 23, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28929539/refuting-the-hypothesis-that-semaphorin-3f-neuropilin-2-exclude-blood-vessels-from-the-cap-mesenchyme-in-the-developing-kidney
#17
David A D Munro, Peter Hohenstein, Thomas M Coate, Jamie A Davies
Background During murine kidney development, new cortical blood vessels form and pattern in cycles that coincide with cycles of collecting duct branching and the accompanying splitting of the cap mesenchyme (nephron progenitor cell populations that "cap" collecting duct ends). At no point in the patterning cycle do blood vessels enter the cap mesenchyme. We hypothesized that the exclusion of blood vessels from the cap mesenchyme may be controlled, at least in part, by an anti-angiogenic signal expressed by the cap mesenchyme cells...
September 20, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29144604/transitions
#18
EDITORIAL
Parker B Antin
No abstract text is available yet for this article.
December 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28791750/histone-deacetylase-1-and-2-are-essential-for-murine-neural-crest-proliferation-pharyngeal-arch-development-and-craniofacial-morphogenesis
#19
Zachary J Milstone, Grace Lawson, Chinmay M Trivedi
BACKGROUND: Craniofacial anomalies involve defective pharyngeal arch development and neural crest function. Copy number variation at 1p35, containing histone deacetylase 1 (Hdac1), or 6q21-22, containing Hdac2, are implicated in patients with craniofacial defects, suggesting an important role in guiding neural crest development. However, the roles of Hdac1 and Hdac2 within neural crest cells remain unknown. RESULTS: The neural crest and its derivatives express both Hdac1 and Hdac2 during early murine development...
December 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28710815/lacrimal-gland-development-from-signaling-interactions-to-regenerative-medicine
#20
REVIEW
Ankur Garg, Xin Zhang
The lacrimal gland plays a pivotal role in keeping the ocular surface lubricated, and protecting it from environmental exposure and insult. Dysfunction of the lacrimal gland results in deficiency of the aqueous component of the tear film, which can cause dryness of the ocular surface, also known as the aqueous-deficient dry eye disease. Left untreated, this disease can lead to significant morbidity, including frequent eye infections, corneal ulcerations, and vision loss. Current therapies do not treat the underlying deficiency of the lacrimal gland, but merely provide symptomatic relief...
December 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
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