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Cripto-1 acts as a molecular bridge linking nodal to ALK4 via distinct structural domains.
Protein Sci
February 2025
Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA.
The TGF-β family ligand Nodal is an essential regulator of embryonic development, orchestrating key processes such as germ layer specification and body axis formation through activation of SMAD2/3-mediated signaling. Significantly, this activation requires the co-receptor Cripto-1. However, despite their essential roles in embryogenesis, the molecular mechanism through which Cripto-1 enables Nodal to activate the SMAD2/3 pathway has remained elusive.
View Article and Find Full Text PDFPalatal segment contributions to midfacial anterior-posterior growth.
J Anat
January 2025
Department of Anthropology, Stony Brook University, Stony Brook, New York, USA.
Anterior-posterior (A-P) elongation of the palate is a critical aspect of integrated midfacial morphogenesis. Reciprocal epithelial-mesenchymal interactions drive secondary palate elongation that is coupled to the periodic formation of signaling centers within the rugae growth zone (RGZ). However, the relationship between RGZ-driven morphogenetic processes, the differentiative dynamics of underlying palatal bone mesenchymal precursors, and the segmental organization of the upper jaw has remained enigmatic.
View Article and Find Full Text PDFSex-Specific White Matter Abnormalities Across the Dynamic Pain Connectome in Neuropathic Pain: A Fixel-Based Analysis Study.
Hum Brain Mapp
January 2025
Division of Brain, Imaging, and Behaviour, Krembil Brain Institute, University Health Network, Toronto, Ontario, Canada.
A fundamental issue in neuroscience is a lack of understanding regarding the relationship between brain function and the white matter architecture that supports it. Individuals with chronic neuropathic pain (NP) exhibit functional abnormalities throughout brain networks collectively termed the "dynamic pain connectome" (DPC), including the default mode network (DMN), salience network, and ascending nociceptive and descending pain modulation systems. These functional abnormalities are often observed in a sex-dependent fashion.
View Article and Find Full Text PDFTranscriptomic DN3 clock neuron subtypes regulate sleep.
Sci Adv
January 2025
Howard Hughes Medical Institute, Brandeis University, Waltham, MA 02453, USA.
Article Synopsis
- Researchers used single-cell RNA sequencing to examine clock neurons in animal brains, particularly focusing on the DN3s, which are a major type of clock neuron in fruit flies.
- DN3s were found to be organized into 12 unique clusters with distinct gene expression patterns that set them apart from other clock neurons.
- The study revealed that certain DN3 subtypes play a significant role in promoting sleep through a specific receptor, suggesting a complex relationship between clock neurons and sleep regulation.
Anatomy and transcriptomics of the common jingle shell (Bivalvia, Anomiidae) support a sensory function for bivalve tentacles.
Sci Rep
December 2024
Department of Zoology, University of São Paulo, São Paulo, SP, Brazil.
Animals have evolved numerous mechanisms to perceive and interact with the environment that can be translated into different sensory modalities. However, the genomic and phenotypic features that support sensory functions remain enigmatic for many invertebrates, such as bivalves, an ecologically and economically important taxonomic group. No repertoire of sensory genes has been characterized in bivalves, representing a significant knowledge gap in molluscan sensory biology.
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