Results 51 to 60 of about 7,901 (178)

Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley   +1 more source

Vertical signalling involves transmission of Hox information from gastrula mesoderm to neurectoderm. [PDF]

PLoS ONE, 2014
Development and patterning of neural tissue in the vertebrate embryo involves a set of molecules and processes whose relationships are not fully understood.
Nabila Bardine, Gerda Lamers, Stephan Wacker, Cornelia Donow, Walter Knoechel, Antony Durston   +5 more
doaj   +1 more source

Reduced Retinoic Acid Signaling During Gastrulation Induces Developmental Microcephaly

Frontiers in Cell and Developmental Biology, 2022
Retinoic acid (RA) is a central signaling molecule regulating multiple developmental decisions during embryogenesis. Excess RA induces head malformations, primarily by expansion of posterior brain structures at the expense of anterior head regions, i.e.,
Michal Gur, Liat Bendelac-Kapon, Yehuda Shabtai, Graciela Pillemer, Abraham Fainsod   +4 more
doaj   +1 more source

Embryonic and larval development of the endangered Chiapas killifish Tlaloc hildebrandi (Cyprinodontiformes: Profundulidae)

Journal of Fish Biology, EarlyView.
Abstract The early ontogeny of endemic freshwater fishes provides essential baseline biological information for conservation and management, particularly in species with restricted distributions and high vulnerability to habitat degradation, environmental change and population decline. This study presents the first detailed description of embryonic and
Rubén Alonso Contreras‐Tapia, Gabriela Garza‐Mouriño, María Elena Castellanos‐Páez, Marcela Ivonne Benítez‐Díaz Mirón, Jairo Arroyave, Alfonso Ángel González‐Díaz, Wilfredo A. Matamoros   +6 more
wiley   +1 more source

Unveiling Gene Expression Dynamics during Early Embryogenesis in Cynoglossus semilaevis: A Transcriptomic Perspective

Life
Commencing with sperm–egg fusion, the early stages of metazoan development include the cleavage and formation of blastula and gastrula. These early embryonic events play a crucial role in ontogeny and are accompanied by a dramatic remodeling of the gene ...
Xinyi Cheng, Wei Jiang, Qian Wang, Kaiqiang Liu, Wei Dai, Yuyan Liu, Changwei Shao, Qiye Li   +7 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Segregation of brain and organizer precursors is differentially regulated by Nodal signaling at blastula stage

Biology Open, 2021
The blastula Chordin- and Noggin-expressing (BCNE) center comprises animal-dorsal and marginal-dorsal cells of the amphibian blastula and contains the precursors of the brain and the gastrula organizer.
Aitana M. Castro Colabianchi, María B. Tavella, Laura E. Boyadjián López, Marcelo Rubinstein, Lucía F. Franchini, Silvia L. López   +5 more
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, Volume 600, Issue 16, Page 2226-2247, August 2026.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

The Anatomical Record, Volume 309, Issue 8, Page 1937-1969, August 2026.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey, Eloy Gálvez‐López, Anthony Herrel, Laura B. Porro   +3 more
wiley   +1 more source

Establishment of Human Formative Pluripotent Stem Cell‐Like Cells Exhibiting Amniotic Differentiation Potentials

Cell Proliferation, Volume 59, Issue 8, August 2026.
The hfPSC‐LCs could be established from naïve hESCs, conventional hESCs, hiPSCs, and human blastocysts. The hfPSC‐LCs hold robust capacity for three germ layers, hPGCLCs, and hALPCs. ABSTRACT Human embryos undergo pivotal morphogenetic remodelling shortly after implantation. The understanding of this crucial stage is severely impeded by the scarcity of
Xiaoxiao Wang, Qizhi Wang, Yu Wu, Chen Gu, Mingfei Li, Yong Fan, Xiangjin Kang, Lei Li, Zheng Gao, Mingyan Hei, Jianqiao Liu, Lei Li   +11 more
wiley   +1 more source