Results 31 to 40 of about 50,858 (171)

Morphological changes and two Nodal paralogs drive left-right asymmetry in the squamate veiled chameleon (C. calyptratus)

Frontiers in Cell and Developmental Biology, 2023
The ancestral mode of left-right (L-R) patterning involves cilia in the L-R organizer. However, the mechanisms regulating L-R patterning in non-avian reptiles remains an enigma, since most squamate embryos are undergoing organogenesis at oviposition.
Natalia A. Shylo, Sarah E. Smith, Andrew J. Price, Fengli Guo, Melainia McClain, Paul A. Trainor, Paul A. Trainor   +6 more
doaj   +1 more source

Ingression-type cell migration drives vegetal endoderm internalisation in the Xenopus gastrula

eLife, 2017
During amphibian gastrulation, presumptive endoderm is internalised as part of vegetal rotation, a large-scale movement that encompasses the whole vegetal half of the embryo. It has been considered a gastrulation process unique to amphibians, but we show
Jason WH Wen, Rudolf Winklbauer
doaj   +1 more source

Substrate stiffness affects early differentiation events in embryonic stem cells [PDF]

European Cells & Materials, 2009
Embryonic stem cells (ESC) are both a potential source of cells for tissue replacement therapies and an accessible tool to model early embryonic development.
ND Evans, C Minelli, E Gentleman, V LaPointe, SN Patankar, M Kallivretaki, X Chen, CJ Roberts, MM Stevens   +8 more
doaj  

Time space and single-cell resolved tissue lineage trajectories and laterality of body plan at gastrulation

Nature Communications, 2023
Understanding of the molecular drivers of lineage diversification and tissue patterning during primary germ layer development requires in-depth knowledge of the dynamic molecular trajectories of cell lineages across a series of developmental stages of ...
Ran Wang, Xianfa Yang, Jiehui Chen, Lin Zhang, Jonathan A. Griffiths, Guizhong Cui, Yingying Chen, Yun Qian, Guangdun Peng, Jinsong Li, Liantang Wang, John C. Marioni, Patrick P. L. Tam, Naihe Jing   +13 more
doaj   +1 more source

RNAi Regulator C3PO Promotes Arbovirus Infection in Insect Vectors

Advanced Science, EarlyView.
RNA interference (RNAi) is vital for eukaryotes to defend against virus infection. The C3PO complex takes part in RNAi but its role in regulating viral infection remains unclear. This work finds that insect C3PO facilitates arbovirus replication by degrading precursors of miRNAs, especially miR‐971‐3p.
Yan Xiao, Tianyu Guan, Qianfeng Xia, Chen Chen, Qian Wang, Lan Luo, Hong Lu, Feng Cui   +7 more
wiley   +1 more source

Micropattern differentiation of mouse pluripotent stem cells recapitulates embryo regionalized cell fate patterning

eLife, 2018
During gastrulation epiblast cells exit pluripotency as they specify and spatially arrange the three germ layers of the embryo. Similarly, human pluripotent stem cells (PSCs) undergo spatially organized fate specification on micropatterned surfaces ...
Sophie M Morgani, Jakob J Metzger, Jennifer Nichols, Eric D Siggia, Anna-Katerina Hadjantonakis   +4 more
doaj   +1 more source

Estimation and rapid identification of later stages during embryonic development of the oviparous lizard Sceloporus aeneus (Squamata: Phrynosomatidae)

The Anatomical Record, EarlyView.
Abstract Stages of embryonic development for reptiles have been presented in tables that may include all or part of embryonic development. When oviposition occurs in some lizards, embryos are already in the later stages of development; likewise, the size of the eggs increases as incubation time progresses.
Nivia Rocio Antonio‐Rubio, Maricela Villagrán‐SantaCruz, Martha Elena Díaz‐Hernández, Norma Moreno‐Mendoza   +3 more
wiley   +1 more source

Interspecific comparisons of anuran embryonic epidermal landscapes and energetic trade‐offs in response to changes in salinity

Developmental Dynamics, EarlyView.
Abstract Background Freshwater salinization is an emerging stressor in amphibian populations, and embryonic stages are most vulnerable. To better understand the variation in embryonic osmoregulation, we challenged embryos of two phylogenetically diverse anuran species, Xenopus laevis and Lithobates (Rana) sylvaticus, along a gradient of non‐lethal ...
Kourtnie Whitfield, Erica J. Crespi
wiley   +1 more source

Lineage labeling with zebrafish hand2 Cre and CreERT2 recombinase CRISPR knock‐ins

Developmental Dynamics, EarlyView.
Abstract Background The ability to generate endogenous Cre recombinase drivers using CRISPR‐Cas9 knock‐in technology allows lineage tracing, cell type‐specific gene studies, and in vivo validation of inferred developmental trajectories from phenotypic and gene expression analyses. This report describes endogenous zebrafish hand2 Cre and CreERT2 drivers
Zhitao Ming, Fang Liu, Hannah R. Moran, Robert L. Lalonde, Megan Adams, Nicole K. Restrepo, Parnal Joshi, Stephen C. Ekker, Karl J. Clark, Iddo Friedberg, Saulius Sumanas, Chunyue Yin, Christian Mosimann, Jeffrey J. Essner, Maura McGrail   +14 more
wiley   +1 more source

Pre‐oviposition development of the brown anole (Anolis sagrei)

Developmental Dynamics, EarlyView.
Abstract Background The brown anole, Anolis sagrei, has emerged as a representative squamate species for developmental studies during the past decades. Novel functional tools have been established to manipulate embryogenesis through genome editing or the introduction of small molecule inhibitors, and their effective use requires a thorough ...
Antonia Weberling, Natalia A. Shylo, Bonnie K. Kircher, Hannah Wilson, Melainia McClain, Marta Marchini, Katherine B. Starr, Thomas J. Sanger, Florian Hollfelder, Paul A. Trainor   +9 more
wiley   +1 more source