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Gene Expression Patterns: GEP

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https://www.readbyqxmd.com/read/29225067/the-dynamics-of-native-atoh7-protein-expression-during-mouse-retinal-histogenesis-revealed-with-a-new-antibody
#1
Joel B Miesfeld, Tom Glaser, Nadean L Brown
The Atoh7 transcription factor catalyzes the rate-limiting step in the specification of retinal ganglion cells (RGCs). As a tool to study vertebrate retinal development, we validate an antibody that recognizes human and mouse Atoh7 polypeptide, using informative knockout and transgenic mouse tissues and overexpression experiments. The transient features of Atoh7 protein expression during retinal neurogenesis match the expected pattern at the tissue and cellular level. Further, we compare endogenous Atoh7 to established RGC markers, reporter mouse lines and cell cycle markers, demonstrating the utility of the antibody to investigate molecular mechanisms of retinal histogenesis...
December 7, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29183840/comparative-expression-analyses-of-bone-morphogenetic-protein-4-bmp4-expressions-in-muscles-of-tilapia-and-common-carp-indicate-that-bmp4-plays-a-role-in-the-intermuscular-bone-distribution-in-a-dose-dependent-manner
#2
Shengyan Su, Zaijie Dong
Intermuscular bones in fish negatively influence both meet processing and attractiveness to consumers. Tilapia (Oreochromis niloticus) and common carp (Cyprinus carpio) are both major farmed fish species globally, but whereas the former does not possess intermuscular bones, the latter does. Therefore, these two species might present a good model to study the genetic control of distribution of intermuscular bones in fish. Bone morphogenetic protein 4 (BMP4) gene is associated with tissue ossification and bone regeneration in mammals, but in fish its role in ossification remains understudied...
November 25, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29155305/hey1-and-hey2-are-differently-expressed-during-mouse-tooth-development
#3
Kotono Kibe, Mitsushiro Nakatomi, Shinji Kataoka, Takashi Toyono, Yuji Seta
The Hey family (also known as Chf, Herp, Hesr, and Hrt) is a set of Hairy/Enhancer of Split-related basic helix-loop-helix type transcription factors. Hey1, Hey2, and HeyL have been identified in mammals. Although Hey proteins are known to regulate cardiovascular development, muscle homeostasis, osteogenesis, neurogenesis, and oncogenesis, their roles in tooth development have been largely obscure. Therefore, this study aimed to clarify detailed spatiotemporal expression patterns of Hey1 and Hey2 in developing molars and incisors of mice by section in situ hybridization...
November 16, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29155075/asymmetric-distribution-of-crumbs-polarity-complex-proteins-from-compacted-8-cell-to-blastocyst-stage-during-mouse-preimplantation-development
#4
Xinlong Jiang, Wenzhong An, Xiao Yang, Jieye Lin, Shiliang Ma, Dajia Wang, Shuang Tang
During mouse preimplantation development, blastomeres are equipotent until polarity establishment at compacted 8-cell stage. The intrinsic nature of polarity is the asymmetric distribution of polarity proteins between inside and outside blastomeres along the direction of apical-basal axis. This study investigated the early developmental temporal and spatial expression of the main CRUMBS polarity complex proteins in the mouse preimplantation embryo. We observed that Crb3, Pals1, Patj and Mpdz are transcribed in the mouse preimplantation embryo...
November 15, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29128397/identification-and-characterization-of-molluscan-caveolin-1-ortholog-from-haliotis-discus-discus-possible-involvement-in-embryogenesis-and-host-defense-mechanism-against-pathogenic-stress
#5
H M V Udayantha, S D N K Bathige, Thanthrige Thiunuwan Priyathilaka, Sukkyoung Lee, Myoung-Jin Kim, Jehee Lee
Caveolins are principal membrane proteins of caveolae that play a central role in signal transduction, substrate transport, and membrane trafficking in various cell types. Numerous studies have reported the crucial role of caveolin-1 (CAV1) in response to invading microbes; yet, very little is known about molluscan CAV1. In this study, we identified and characterized CAV1 ortholog from the disk abalone, Haliotis discus discus (HdCAV1). The cDNA sequence of HdCAV1 is 826 bp long and encodes a 127-amino acid polypeptide...
November 8, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29126985/spatiotemporal-expression-pattern-of-connexin-43-during-early-chick-embryogenesis
#6
Karyn Jourdeuil, Lisa A Taneyhill
During embryogenesis, a single cell develops into new tissues and organs that are made up of a number of different cell types. The assembly of the trigeminal ganglion (cranial nerve V), an important component of the peripheral nervous system, typifies this process. The trigeminal ganglia perform key sensory functions, including sensing pain and touch in the face, and arise from cells of two different progenitor populations, the neural crest and the cranial placodes. One question that remains poorly understood is how these two populations of cells interact with each other during development to form a functional ganglion...
November 7, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29122676/a-six-gene-expression-toolbox-for-the-glands-epithelium-and-chondrocytes-in-the-mouse-nasal-cavity
#7
Yong Wan, Matthew B Rogers, Heather L Szabo-Rogers
The nose is the central feature of the amniote face. In adults, the nose is a structurally and functionally complex organ that consists of bone, cartilage, glands and ducts. In an ongoing expression screen in our lab, we found several novel markers for specific tissues in the nasal region. Here, using in situ hybridization expression experiments, we report that Alx1, Ap-2β, Crispld1, Eya4, Moxd1, and Penk have tissue specific expression during murine nasal development. At E11.5, we observed that Alx1, Ap-2β, Crispld1, and Eya4 are expressed in the medial and lateral nasal prominences...
November 6, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29122675/high-throughput-method-for-extracting-and-visualizing-the-spatial-gene-expressions-from-in-situ-hybridization-images-a-case-study-of-the-early-development-of-the-sea-anemone-nematostella-vectensis
#8
A M Abdol, Andrew Bedard, Imke Lánský, J A Kaandorp
Studying the spatial gene expression profiles from in situ hybridization images of the embryo is one of the first steps toward the comprehensive understanding of gene interactions in an organism. In the case of N. vectensis, extracting and collecting these data is a challenging task due to the difficulty of detecting the cell layer through the transparent body plan and changing morphology during the blastula and gastrula stages. Here, first, we introduce a method to algorithmically identify and track the cell layer in N...
November 6, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29107805/neuronal-expression-patterns-of-the-plexina-family-during-zebrafish-development
#9
Sarah E Emerson, Sarah E Light, Alicia M Ebert
Plexins (Plxns) and Semaphorins (Semas) are key signaling molecules that regulate many aspects of development. Plxns are a family of transmembrane protein receptors that are activated upon extracellular binding by Semas. Activated Plxns trigger intracellular signaling cascades, which regulate a range of developmental processes, including axon guidance, neuronal positioning and vasculogenesis. Semas are a large family of both transmembrane and secreted signaling molecules, and show subtype specific binding to different Plxn family members...
October 28, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29066359/postimplantation-mga-expression-and-embryonic-lethality-of-two-gene-trap-alleles
#10
Sally F Burn, Andrew J Washkowitz, Svetlana Gavrilov, Virginia E Papaioannou
BACKGROUND: The dual-specificity T-box/basic helix-loop-helix leucine zipper transcription factor MGA is part of the MAX-interacting network of proteins. In the mouse, MGA is necessary for the survival of the pluripotent epiblast cells of the peri-implantation embryo and a null, gene-trap allele Mga(Gt) results in embryonic lethality shortly after implantation. We have used this allele to document expression of Mga in postimplantation embryos and also investigated a second, hypomorphic gene-trap allele, Mga(Inv)...
October 21, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/29061525/characterization-of-a-new-inducible-transgenic-mouse-model-with-gfp-expression-in-melanocytes-and-their-precursors
#11
Sandeep S Joshi, Bishal Tandukar, Maira Castaneda, Shunlin Jiang, Ganesh Diwakar, Ronna P Hertzano, Thomas J Hornyak
Melanocytes are neural crest-derived cells that are responsible for mammalian hair follicle (HF) pigmentation. The Dct-LacZ transgenic mouse is extensively used to study melanocyte biology but lacks conditionally-inducible labelling and fluorescent labelling, enabling specific, viable isolation of melanocytes using fluorescence-activated cell sorting (FACS). Here, we have generated a Tet-off bitransgenic mouse model, Dct-H2BGFP, containing Dct-tTA and TRE-H2BGFP transgenes. Characterization of Dct-H2BGFP mice confirmed a pattern of Dct-H2BGFP expression in melanoblasts, melanocyte stem cells (McSCs), and terminally differentiated melanocytes similar to the expression pattern of previously published mouse models Dct-LacZ and iDct-GFP...
October 21, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28988845/a-bombyx-homolog-of-ovo-is-a-segmentation-gene-that-acts-downstream-of-bm-wnt1-bombyx-wnt1-homolog
#12
Hajime Nakao
Insect embryogenesis is divided into long and short/intermediate germ types. The long germ type may exhibit Drosophila-like hierarchical segmentation mechanisms, whereas the short/intermediate type assumes some repeating mechanisms that are considered to be ancestral. Embryogenesis in Bombyx mori possesses both characteristics. Here, Bombyx ovo homolog (Bm-ovo) was identified as a gene involved in segmentation. Ovo is a Drosophila gene that encodes a zinc finger transcription factor and studies on its homolog functions in other systems have suggested that it acts as a switch to enable the initiation of differentiation from a progenitor cell state...
October 5, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28987646/molecular-cloning-and-expression-of-octamer-binding-transcription-factor-oct4-in-the-large-yellow-croaker-larimichthys-crocea
#13
Yonghua Jiang, Kunhuang Han, Shihai Chen, Mingyi Cai, Yilei Wang, Ziping Zhang
Octamer-binding transcription factor 4 (Oct4) is a crucial pluripotent transcription factor in controlling pluripotency of embryonic stem cells (ESCs), formation of primordial germ cells (PGCs), early embryonic development, and gonadal germ cells. To understand the roles of Oct4 in the large yellow croaker (Larimichthys crocea) (Lc-Oct4), the full-length cDNA of Oct4 was cloned and analyzed. Lc-Oct4 includes a 104-bp 5' untranslated region (UTR), a 567-bp 3' UTR and a 1431-bp coding region encoding a protein of 476 amino acids (aa) with a predicted molecular mass (Mm) of 52...
October 4, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28958789/expression-analyzes-of-early-factors-in-midbrain-differentiation-programs
#14
Simone Mesman, Sonja J Krüse, Marten P Smidt
Mesodiencephalic dopaminergic (mdDA) neurons are born in the ventricular zone (VZ) of the midbrain between E10 and E12. Although these neurons all express specific DA markers like Th and Pitx3, they are subdivided into distinct subsets, each depending on a unique set of transcription factors and signaling cascades for their differentiation. How a neural progenitor commits to an mdDA neuronal cell-fate and how the specification into the different subsets is determined remains unclear. To gain more insight into the development and specification of these neurons we have previously conducted a genome-wide expression analysis, in which dissected midbrain material (E10...
September 27, 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28865954/comparative-expression-profiling-of-atrad5b-and-atndl1-hints-towards-a-role-in-g-protein-mediated-signaling
#15
Nisha Khatri, Swati Singh, Nasmeen Hakim, Yashwanti Mudgil
Arabidopsis AtRAD5B encodes for a putative helicase of the class SWItch/Sucrose Non-Fermentable (SWI/SNF) ATPases. We identified AtRAD5B as an interactor of N-MYC DOWNREGULATED-LIKE1 (AtNDL1) in a yeast two-hybrid screen. AtNDL1 is a G protein signaling component which regulates auxin transport and gradients together with GTP binding protein beta 1 (AGB1). Auxin gradients are known to recruit SWI/SNF remodeling complexes to the chromatin and regulate expression of genes involved in flower and leaf formation...
November 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28843894/modulation-of-gene-expression-by-nutritional-state-and-hormones-in-bombyx-larvae-in-relation-to-its-growth-period
#16
Bembem Thounaojam, Bela Keshan
Insect growth and development are mainly regulated via synchronization of many extrinsic and intrinsic factors such as nutrition and hormones. Previously we have demonstrated that larval growth period influences the effect of insulin on the accumulation of glycogen in the fat body of Bombyx larvae. In the present study we demonstrate that Bombyx larvae at the terminal growth period (TGP, after critical weight) had a significantly greater increase in the expression level of Akt in the fat body than at the active growth period (AGP, before critical weight)...
November 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28826993/expression-and-characterization-of-the-zebrafish-orthologue-of-the-human-folr1-gene-during-embryogenesis
#17
RoJenia N Jones, Stephanie A Erhard, Mark R Malham, Ayaz Y Gen, Kyle Sullivan, Kenneth W Olsen, Rodney M Dale
It has been well established that many types of rapidly dividing normal and diseased cells require an increased amount of folate for DNA replication and repair as well as cellular metabolism. Thus one of folate's cognate receptors, Folate Receptor 1 (FOLR1) is usually up-regulated in rapidly dividing cells, including many types of cancerous tumors. Because zebrafish have become a model organism for understanding conserved vertebrate cellular pathways and human disease, there has been an increased need to identify and elucidate orthologous zebrafish genes that are central to known human maladies...
November 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28800889/spatio-temporal-expression-patterns-of-wnt-signaling-pathway-during-the-development-of-temporomandibular-condylar-cartilage
#18
Kan Chen, Huixin Quan, Gang Chen, Di Xiao
There is a growing body of evidence supporting the involvement of the Wnt signaling pathway in various aspects of skeletal and joint development; however, it is unclear whether it is involved in the process of temporomandibular joint development. In order to clarify this issue, we examined the spatio-temporal distribution of mRNAs and proteins of the Wnt family during the formation of the mandibular condylar cartilage at the prenatal and postnatal stages. An in situ hybridization test revealed no mRNAs of β-catenin and Axin2 during early mesenchymal condensation; the ligands surveyed in this study (including Wnt-4, 5a, and 9a) were clearly detected at various ranges of expression, mainly in the condylar blastema and later distinct cartilaginous layers...
November 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28710028/gene-expression-profiles-of-fin-regeneration-in-loach-paramisgurnus-dabryanu
#19
Li Li, Jingya He, Linlin Wang, Weihua Chen, Zhongjie Chang
Teleost fins can regenerate accurate position-matched structure and function after amputation. However, we still lack systematic transcriptional profiling and methodologies to understand the molecular basis of fin regeneration. After histological analysis, we established a suppression subtraction hybridization library containing 418 distinct sequences expressed differentially during the process of blastema formation and differentiation in caudal fin regeneration. Genome ontology and comparative analysis of differential distribution of our data and the reference zebrafish genome showed notable subcategories, including multi-organism processes, response to stimuli, extracellular matrix, antioxidant activity, and cell junction function...
November 2017: Gene Expression Patterns: GEP
https://www.readbyqxmd.com/read/28669683/effects-of-interferon-tau-on-endometrial-epithelial-cells-in-caprine-in%C3%A2-vitro
#20
Yue Zhang, Lei Zhang, Chaofeng Yu, Xiaoyan Du, Xiaorui Liu, Junze Liu, Xiaopeng An, Jiangang Wang, Yuxuan Song, Guang Li, Binyun Cao
Embryo attachment, a precondition of ruminant pregnancy, has been recognized to be related to apoptosis in endometrial epithelial cells (EECs). In ruminants, interferon tau (IFNT) is secreted by trophoblast of conceptus and works in a concentration-dependent style. To verify the function of IFNT in caprine embryo attachment, caprine EECs were dealt with IFNT at 0, 1, 10 and 100 ng/ml. In this study, IFNT arrested caprine EEC cell cycle in G2 phase and induced cell apoptosis at 1 ng/ml and 10 ng/ml of IFNT...
November 2017: Gene Expression Patterns: GEP
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