keyword
MENU ▼
Read by QxMD icon Read
search

Extraembryonic

keyword
https://www.readbyqxmd.com/read/28428258/deletion-of-inositol-requiring-enzyme-1%C3%AE-in-podocytes-disrupts-glomerular-capillary-integrity-and-autophagy
#1
Daniel Robert Kaufman, Joan Papillon, Louise Larose, Takao Iwawaki, Andrey V Cybulsky
Inositol-requiring enzyme-1α (IRE1α) is an endoplasmic reticulum (ER)-transmembrane endoribonuclease-kinase, which plays an essential function in extraembryonic tissues during normal development, and is activated during ER stress. To address the functional role of IRE1α in glomerular podocytes, we produced podocyte-specific IRE1α deletion mice. In male mice, deletion of IRE1α in podocytes resulted in albuminuria beginning at 5 months of age, and worsening with time. Electron microscopy revealed focal podocyte foot process effacement in 9-month old male IRE1α deletion mice, as well as microvillous transformation of podocyte plasma membranes...
April 20, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28405742/crispr-cas9-mediated-deletion-of-lncrna-gm26878-in-the-distant-foxf1-enhancer-region
#2
Przemyslaw Szafranski, Justyna A Karolak, Denise Lanza, Marzena Gajęcka, Jason Heaney, Paweł Stankiewicz
Recent genome editing techniques, including CRISPR mutagenesis screens, offer unparalleled opportunities to study the regulatory non-coding genomic regions, enhancers, promoters, and functional non-coding RNAs. Heterozygous point mutations in FOXF1 and genomic deletion copy-number variants at chromosomal region 16q24.1 involving FOXF1 or its regulatory region mapping ~300 kb upstream of FOXF1 and leaving it intact have been identified in the vast majority of patients with a lethal neonatal lung disease, alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV)...
April 12, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28389228/brachyury-drives-formation-of-a-distinct-vascular-branchpoint-critical-for-fetal-placental-arterial-union-in-the-mouse-gastrula
#3
Adriana M Rodriguez, Dexter X Jin, Adam D Wolfe, Maria M Mikedis, Lauren Wierenga, Maleka P Hashmi, Christoph Viebahn, Karen M Downs
How the fetal-placental arterial connection is made and positioned relative to the embryonic body axis, thereby ensuring efficient and directed blood flow to and from the mother during gestation, is not known. Here we use a combination of genetics, timed pharmacological inhibition in living mouse embryos, and three-dimensional modeling to link two novel architectural features that, at present, have no status in embryological atlases. The allantoic core domain (ACD) is the extraembryonic extension of the primitive streak into the allantois, or pre-umbilical tissue; the vessel of confluence (VOC), situated adjacent to the ACD, is an extraembryonic vessel that marks the site of fetal-placental arterial union...
April 4, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28388409/derivation-of-pluripotent-stem-cells-with-in%C3%A2-vivo-embryonic-and-extraembryonic-potency
#4
Yang Yang, Bei Liu, Jun Xu, Jinlin Wang, Jun Wu, Cheng Shi, Yaxing Xu, Jiebin Dong, Chengyan Wang, Weifeng Lai, Jialiang Zhu, Liang Xiong, Dicong Zhu, Xiang Li, Weifeng Yang, Takayoshi Yamauchi, Atsushi Sugawara, Zhongwei Li, Fangyuan Sun, Xiangyun Li, Chen Li, Aibin He, Yaqin Du, Ting Wang, Chaoran Zhao, Haibo Li, Xiaochun Chi, Hongquan Zhang, Yifang Liu, Cheng Li, Shuguang Duo, Ming Yin, Huan Shen, Juan Carlos Izpisua Belmonte, Hongkui Deng
Of all known cultured stem cell types, pluripotent stem cells (PSCs) sit atop the landscape of developmental potency and are characterized by their ability to generate all cell types of an adult organism. However, PSCs show limited contribution to the extraembryonic placental tissues in vivo. Here, we show that a chemical cocktail enables the derivation of stem cells with unique functional and molecular features from mice and humans, designated as extended pluripotent stem (EPS) cells, which are capable of chimerizing both embryonic and extraembryonic tissues...
April 6, 2017: Cell
https://www.readbyqxmd.com/read/28379482/investigating-proteins-and-proteases-composing-amniotic-and-allantoic-fluids-during-chicken-embryonic-development
#5
M Da Silva, V Labas, Y Nys, S Réhault-Godbert
In amniotes, the amniotic fluid is a significant contributor to fetal development and health. While numerous studies have been conducted in mammalian amniotic fluid, the composition of amniotic and other extraembryonic fluids in avian egg along with their physiological functions remain largely unexplored. In such a context, our objective was to characterize the chicken amniotic fluid (AmF) and allantoic fluid (AlF) properties, protein composition, and some associated functions from day 8 to day 16 of incubation...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28373885/mechanisms-regulating-stemness-and-differentiation-in-embryonal-carcinoma-cells
#6
REVIEW
Gregory M Kelly, Mohamed I Gatie
Just over ten years have passed since the seminal Takahashi-Yamanaka paper, and while most attention nowadays is on induced, embryonic, and cancer stem cells, much of the pioneering work arose from studies with embryonal carcinoma cells (ECCs) derived from teratocarcinomas. This original work was broad in scope, but eventually led the way for us to focus on the components involved in the gene regulation of stemness and differentiation. As the name implies, ECCs are malignant in nature, yet maintain the ability to differentiate into the 3 germ layers and extraembryonic tissues, as well as behave normally when reintroduced into a healthy blastocyst...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28322735/stella-collaborates-in-distinct-mesendodermal-cell-subpopulations-at-the-fetal-placental-interface-in-the-mouse-gastrula
#7
Adam D Wolfe, Adriana M Rodriguez, Karen M Downs
The allantois-derived umbilical component of the chorio-allantoic placenta shuttles fetal blood to and from the chorion, thereby ensuring fetal-maternal exchange. The progenitor populations that establish and supply the fetal-umbilical interface lie, in part, within the base of the allantois, where the germ line is claimed to segregate from the soma. Results of recent studies in the mouse have reported that STELLA (DPPA-3, PGC7) co-localizes with PRDM1 (BLIMP1), the bimolecular signature of putative primordial germ cells (PGCs) throughout the fetal-placental interface...
May 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28319357/par3-in-chick-lens-placode-development
#8
Maraysa de Oliveira Melo, Ricardo Moraes Borges, Chao Yun Irene Yan
The lens originates from a simple cuboidal epithelium, which, on its basal side, contacts the optic vesicle, whilst facing the extraembryonic environment on its apical side. As this epithelium changes into the pseudostratified lens placode, its cells elongate and become narrower at their apical ends. This is due to the formation of an apical actin network, whose appearance is restricted to cells of the placodal region, as a result of region-specific signaling mechanisms that remain largely unknown. Here, we investigated the role of the polarity protein PAR3 and the phosphorylation state of its Threonine 833 (T833) aPKC-binding site in the recruitment of aPKC and in the establishment of actin network in the chick lens placode...
March 20, 2017: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/28301581/assessing-tn5-and-sleeping-beauty-for-transpositional-transgenesis-by-cytoplasmic-injection-into-bovine-and-ovine-zygotes
#9
R J Bevacqua, R Fernandez-Martin, N G Canel, A Gibbons, D Texeira, F Lange, G Vans Landschoot, V Savy, O Briski, M I Hiriart, E Grueso, Z Ivics, O Taboga, W A Kues, S Ferraris, D F Salamone
Transgenic domestic animals represent an alternative to bioreactors for large-scale production of biopharmaceuticals and could also provide more accurate biomedical models than rodents. However, their generation remains inefficient. Recently, DNA transposons allowed improved transgenesis efficiencies in mice and pigs. In this work, Tn5 and Sleeping Beauty (SB) transposon systems were evaluated for transgenesis by simple cytoplasmic injection in livestock zygotes. In the case of Tn5, the transposome complex of transposon nucleic acid and Tn5 protein was injected...
2017: PloS One
https://www.readbyqxmd.com/read/28299650/the-role-of-runx1-in-embryonic-blood-cell-formation
#10
Amanda D Yzaguirre, Marella F T R de Bruijn, Nancy A Speck
The de novo generation of hematopoietic stem and progenitor cells (HSPC) occurs solely during embryogenesis from a population of epithelial cells called hemogenic endothelium (HE). During midgestation HE cells in multiple intra- and extraembryonic vascular beds leave the vessel wall as they transition into HSPCs in a process termed the endothelial to hematopoietic transition (EHT). Runx1 expression in HE cells orchestrates the transcriptional switch necessary for the transdifferentiation of endothelial cells into functional HSPCs...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28298438/single-cell-analysis-reveals-lineage-segregation-in-early-post-implantation-mouse-embryos
#11
Jing Wen, Yanwu Zeng, Zhuoqing Fang, Junjie Gu, Laixiang Ge, Fan Tang, Zepeng Qu, Jing Hu, Yaru Cui, Kunshan Zhang, Junbang Wang, Siguang Li, Yi Sun, Ying Jin
The mammalian post-implantation embryo has been extensively investigated at the tissue level. However, to unravel the molecular basis for the cell-fate plasticity and determination, it is essential to study the characteristics of individual cells. Especially, the individual definitive endoderm (DE) cells have not been characterized in vivo. Here, we report gene expression patterns in single cells freshly isolated from mouse embryos on days 5.5 and 6.5. Initial transcriptome data from 124 single cells yielded signature genes for the epiblast, visceral endoderm, and extra-embryonic ectoderm and revealed a unique distribution pattern of fibroblast growth factor (Fgf) ligands and receptors...
March 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28281537/moving-towards-totipotency-without-a-single-mir-acle
#12
Noam Maoz, Yosef Buganim
Totipotency is the ability of a single cell to form an entire embryo, including extra-embryonic tissues, an ability we have yet to recapitalize, in vitro. In a recent paper published in Science, Choi et al. showed that pluripotent stem cells lacking microRNA miR-34a, have an expanded cell fate potential allowing differentiation into not only embryonic but also extraembryonic lineages.
March 10, 2017: Cell Research
https://www.readbyqxmd.com/read/28271994/nkx2-5-marks-angioblasts-that-contribute-to-hemogenic-endothelium-of-the-endocardium-and-dorsal-aorta
#13
Lyad Zamir, Reena Singh, Elisha Nathan, Ralph Patrick, Oren Yifa, Yfat Yahalom-Ronen, Alaa A Arraf, Thomas M Schultheiss, Shengbao Suo, Jing-Dong Jackie Han, Guangdun Peng, Naihe Jing, Yuliang Wang, Nathan Palpant, Patrick Pl Tam, Richard P Harvey, Eldad Tzahor
Novel regenerative therapies may stem from deeper understanding of the mechanisms governing cardiovascular lineage diversification. Using enhancer mapping and live imaging in avian embryos, and genetic lineage tracing in mice, we investigated the spatio-temporal dynamics of cardiovascular progenitor populations. We show that expression of the cardiac transcription factor Nkx2.5 marks a mesodermal population outside of the cardiac crescent in the extraembryonic and lateral plate mesoderm, with characteristics of hemogenic angioblasts...
March 8, 2017: ELife
https://www.readbyqxmd.com/read/28249357/gastrulation-in-an-annual-killifish-molecular-and-cellular-events-during-germ-layer-formation-in-austrolebias
#14
Luisa Pereiro, Felix Loosli, Juan Fernández, Steffen Härtel, Joachim Wittbrodt, Miguel L Concha
BACKGROUND: Comparative studies beyond the traditional model organisms have been instrumental in enhancing our understanding of the conserved and derived features of gastrulation, a fundamental process in which the germ layers are specified and shaped to form the body axis. Here, we analysed gastrulation in a vertebrate group with an extreme mode of early development, the annual killifish. RESULTS: Gastrulation in annual killifish of the genus Austrolebias takes place after the initially dispersed deep blastomeres congregate to form the so-called reaggregate...
March 1, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28244655/the-plasticity-of-germ-cell-cancers-and-its-dependence-on-the-cellular-microenvironment
#15
REVIEW
Daniel Nettersheim, Hubert Schorle
So far, the understanding of germ cell cancer (GCC) pathogenesis is based on a model, where seminomas and non-seminomas represent distinct entities although originating from a common precursor termed germ cell neoplasia in situ (GCNIS). Embryonal carcinomas (ECs), the stem cell population of the non-seminomas, is pluri- to totipotent and able to differentiate into cells of all three germ layers, giving rise to teratomas or tumours mimicking extraembryonic tissues (yolk sac tumours, choriocarcinomas). With regard to gene expression, (epi)genetics and histology, seminomas are highly similar to GCNIS and primordial germ cells, but limited in development...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28165148/a-correlative-study-of-the-allantois-in-pig-and-rabbit-highlighting-the-diversity-of-extraembryonic-tissues-in-four-mammalian-species-including-mouse-and-man
#16
Waad Hassan, Christoph Viebahn
Despite its conserved role in placenta and umbilical cord formation, the mammalian allantois shows remarkable diversity in size and form as well as in the timing of its appearance and attachment to the chorion. In the mouse, the common allantoic diverticulum is lacking; instead, the allantoic core domain is defined as a progenitor center for allantoic development. In this study, the allantoises of the pig and the rabbit as two nonrodent mammals of increasing significance in biomedical research are compared (1) morphologically using high resolution light and electron microscopy and (2) molecularly using brachyury mRNA expression as a mesodermal marker...
February 6, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28161053/htr-8-svneo-cell-line-contains-a-mixed-population-of-cells
#17
Wassim Abou-Kheir, Joanna Barrak, Ola Hadadeh, Georges Daoud
INTRODUCTION: The placenta, a transient organ in humans, is essential for pregnancy maintenance and fetal development. Trophoblast and stromal cells are the main cell types present in human placenta. Trophoblast cells are derivatives of the trophectoderm layer and fulfill the endocrine, exchange, invasion and implantation processes of the placenta, whereas stromal cells are of extraembryonic mesenchymal origin and are important for villous formation and maintenance. Different cell lines were developed to study trophoblast functions including BeWo, JEG-3 and JAR from chorioncarcinoma while HTR-8/SVneo was developed using first trimester extravillous trophoblast infected with simian virus 40 large T antigen (SV40)...
February 2017: Placenta
https://www.readbyqxmd.com/read/28152080/nox1-and-nox4-are-required-for-the-differentiation-of-mouse-f9-cells-into-extraembryonic-endoderm
#18
Benjamin J Dickson, Mohamed I Gatie, Danielle M Spice, Gregory M Kelly
Mouse F9 cells differentiate to primitive endoderm (PrE) when treated with retinoic acid (RA). Differentiation is accompanied by increased reactive oxygen species (ROS) levels, and while treating F9 cells with antioxidants attenuates differentiation, H2O2 treatment alone is sufficient to induce PrE. We identified the NADPH oxidase (NOX) complexes as candidates for the source of this endogenous ROS, and within this gene family, and over the course of differentiation, Nox1 and Nox 4 show the greatest upregulation induced by RA...
2017: PloS One
https://www.readbyqxmd.com/read/28134930/xist-dependent-imprinted-x-inactivation-and-the-early-developmental-consequences-of-its-failure
#19
Maud Borensztein, Laurène Syx, Katia Ancelin, Patricia Diabangouaya, Christel Picard, Tao Liu, Jun-Bin Liang, Ivaylo Vassilev, Rafael Galupa, Nicolas Servant, Emmanuel Barillot, Azim Surani, Chong-Jian Chen, Edith Heard
The long noncoding RNA Xist is expressed from only the paternal X chromosome in mouse preimplantation female embryos and mediates transcriptional silencing of that chromosome. In females, absence of Xist leads to postimplantation lethality. Here, through single-cell RNA sequencing of early preimplantation mouse embryos, we found that the initiation of imprinted X-chromosome inactivation absolutely requires Xist. Lack of paternal Xist leads to genome-wide transcriptional misregulation in the early blastocyst and to failure to activate the extraembryonic pathway that is essential for postimplantation development...
March 2017: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/28114387/gene-expression-noise-enhances-robust-organization-of-the-early-mammalian-blastocyst
#20
William R Holmes, Nabora Soledad Reyes de Mochel, Qixuan Wang, Huijing Du, Tao Peng, Michael Chiang, Olivier Cinquin, Ken Cho, Qing Nie
A critical event in mammalian embryo development is construction of an inner cell mass surrounded by a trophoectoderm (a shell of cells that later form extraembryonic structures). We utilize multi-scale, stochastic modeling to investigate the design principles responsible for robust establishment of these structures. This investigation makes three predictions, each supported by our quantitative imaging. First, stochasticity in the expression of critical genes promotes cell plasticity and has a critical role in accurately organizing the developing mouse blastocyst...
January 2017: PLoS Computational Biology
keyword
keyword
5578
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"