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Construction of a rodent neural network-skeletal muscle assembloid that simulate the postnatal development of spinal cord motor neuronal network.
Sci Rep
January 2025
Key Laboratory for Stem Cells and Tissue Engineering Ministry of Education, Guangdong Provincial Key Laboratory of Brain Function and Disease, Institute of Spinal Cord Injury, Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
Neuromuscular diseases usually manifest as abnormalities involving motor neurons, neuromuscular junctions, and skeletal muscle (SkM) in postnatal stage. Present in vitro models of neuromuscular interactions require a long time and lack neuroglia involvement. Our study aimed to construct rodent bioengineered spinal cord neural network-skeletal muscle (NN-SkM) assembloids to elucidate the interactions between spinal cord neural stem cells (SC-NSCs) and SkM cells and their biological effects on the development and maturation of postnatal spinal cord motor neural circuits.
View Article and Find Full Text PDFThe common murine retroviral integration site activating Hhex marks a distal regulatory enhancer co-opted in human Early T-cell precursor leukemia.
J Biol Chem
January 2025
Indiana University School of Medicine, Indianapolis, Indiana; IU Simon Comprehensive Cancer Center, Indianapolis, Indiana; R.L. Roudebush Indianapolis VA Medical Center, Indianapolis, Indiana. Electronic address:
The Hhex gene encodes a transcription factor that is important for both embryonic and post-natal development, especially of hematopoietic tissues. Hhex is one of the most common sites of retroviral integration in mouse models. We found the most common integrations in AKXD (recombinant inbred strains) T-ALLs occur 57-61kb 3' of Hhex and activate Hhex gene expression.
View Article and Find Full Text PDFPrenatal gene editing for neurodevelopmental diseases: Ethical considerations.
Am J Hum Genet
January 2025
Department of Social Medicine and Center for Bioethics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Neurodevelopmental diseases (NDDs) are notoriously difficult to treat because clinical symptoms stem from developmental processes that begin before birth. Prenatal gene editing could fill the treatment gap for NDDs by targeting and permanently correcting the genetic variants that underlie these pathogenic developmental processes. At the same time, there is a risk of unintended edits to the fetus or the pregnant person that could result in serious adverse consequences that are difficult, if not impossible, to undo.
View Article and Find Full Text PDFPreterm Neonates Exhibit a "Catch-Up" Pattern in Motor Development During the Neonatal Period: A Diffusion Tensor Imaging Study.
Pediatr Neurol
January 2025
Department of Radiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China; Shaanxi Engineering Research Center of Computational Imaging and Medical Intelligence, Xi'an, China. Electronic address:
Background: Preterm infants are at high risk for subsequent neurodevelopmental disability. Early developmental characterization of brain and neurobehavioral function is critical for identifying high-risk infants. This study aimed to elucidate the early evolution of sensorimotor function in preterm neonates by exploring postnatal age-related changes in the brain white matter (WM) and neurobehavioral abilities.
View Article and Find Full Text PDFFrom Play Date to Stress Fate: Juvenile Social Play Rescues Stress-Induced Changes in Adult Social Behavior.
Dev Psychobiol
January 2025
Department of Psychology, The University of Tennessee Knoxville, Knoxville, Tennessee, USA.
Long-term effects of social play on neural and behavioral development remain unclear. We investigated whether just 1 h of juvenile social play could rescue the effects of play deprivation on stress-related behavior and markers of neural plasticity. Syrian hamsters were reared from postnatal days 21-43 in three conditions: peer isolation, peer isolation with daily social play sessions (dyadic play), or group-housed with littermates.
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