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Cell therapy is a promising approach to generate an enteric nervous system (ENS) and treat enteric neuropathies. However, for translation to the clinic, it is highly likely that enteric neural progenitors will require manipulation prior to transplantation to enhance their ability to migrate and generate an ENS. In this study, we examine the effects of exposure to several factors on the ability of ENS progenitors, grown as enteric neurospheres, to migrate and generate an ENS. Exposure to glial-cell-line-derived neurotrophic factor (GDNF) resulted in a 14-fold increase in neurosphere volume and a 12-fold increase in cell number. Following co-culture with embryonic gut or transplantation into the colon of postnatal mice in vivo, cells derived from GDNF-treated neurospheres showed a 2-fold increase in the distance migrated compared with controls. Our data show that the ability of enteric neurospheres to generate an ENS can be enhanced by exposure to appropriate factors.
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http://dx.doi.org/10.1016/j.stemcr.2016.12.013 | DOI Listing |
Microbiol Res
September 2025
Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin, China. Electronic address:
Intractable functional constipation (IFC), a severe form of chronic constipation characterized by slow transit and resistance to conventional treatments, posed a significant clinical challenge. Here, we identified Lactococcus formosensis (Lf), a Gram-positive bacterium prevalent in IFC patients, as a novel contributor to intestinal motility impairment. Clinically, IFC patients exhibited increased colonic mucosal colonization of Lf and significant myenteric neuronal loss and pyroptosis, particularly in excitatory choline acetyltransferase (ChAT) neurons, but not inhibitory neuronal nitric oxide synthase (nNOS) neurons.
View Article and Find Full Text PDFCell Mol Gastroenterol Hepatol
September 2025
Department of Pathology & Laboratory Medicine, Emory University, Atlanta, USA. Electronic address:
Background & Aims: Formylated peptide receptors 1 and 2 (Fpr1/2 or FPRs) are G-protein-coupled pattern recognition receptors that bind bacterial formylated peptides. The role of FPRs in enteric nervous system (ENS) development and gastrointestinal (GI) motility is unknown.
Methods: We generated mice with germline, epithelial-, and neural crest-specific deletion of the Fpr1/2 locus and assessed ENS structure and GI motility.
J Vis
September 2025
Institute de Neurosciences de la Timone, Aix-Marseille Univ, CNRS, Marseille, France.
The visual systems of animals work in diverse and constantly changing environments where organism survival requires effective senses. To study the hierarchical brain networks that perform visual information processing, vision scientists require suitable tools, and Motion Clouds (MCs)-a dense mixture of drifting Gabor textons-serve as a versatile solution. Here, we present an open toolbox intended for the bespoke use of MC functions and objects within modeling or experimental psychophysics contexts, including easy integration within Psychtoolbox or PsychoPy environments.
View Article and Find Full Text PDFSoft Matter
September 2025
Gulliver, UMR CNRS 7083, ESPCI Paris, Université PSL, 75005 Paris, France.
Synthetic active matter systems, such as active colloids, often have complex interactions, which can be of hydrodynamic, chemical or electrostatic origin and cannot be computed from first principles. Here, we use stochastic force inference to learn general pair interactions, including transverse forces and torques, between self-propelled Janus particles from experimental trajectories. We use data from two experiments: one where the particles flock, and one where the system remains disordered.
View Article and Find Full Text PDFTrends Cell Biol
August 2025
Institute of Human Genetics (IGH), CNRS, Montpellier University, Montpellier, France. Electronic address:
RNA localization and local translation are widespread phenomena that play key roles in a plethora of cellular processes ranging from embryo patterning to general cellular functions. The traditional paradigm assigns localization elements to cis-acting RNA sequences which assemble into complexes that regulate mRNA transport and translation, and the mRNA is generally transported while remaining translationally silent. However, recent evidence has shown that the nascent protein can also play an essential role in RNA localization and can enable polysomes to control their own transport and be delivered where and when they are needed.
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