Nematode Chemosensory G-Protein Coupled Receptors have expanded within nematodes, where they play important roles in foraging and host-seeking behaviour. Nematode Chemosensory G-Protein Coupled Receptors are most highly expressed during free-living stages when chemosensory signalling is required for host detection and nematode activation in various parasitic nematodes, and therefore position Nematode Chemosensory G-Protein Coupled Receptors at the transition from infective to parasitic stages, making them important regulators to study in terms of host-seeking and host specificity. To facilitate the analysis of Nematode Chemosensory G-Protein Coupled Receptors, here we describe an integrative database of nematode chemoreceptors called NemChR-DB. This database enables users to study diverse parasitic nematode chemoreceptors, functionally explore sequence entries through structural and literature-based annotations, and perform cross-species comparisons.
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http://dx.doi.org/10.1016/j.ijpara.2020.09.007 | DOI Listing |
Curr Biol
December 2024
Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA. Electronic address:
Skin-penetrating nematodes infect nearly one billion people worldwide. The developmentally arrested infective larvae (iL3s) seek out hosts, invade hosts via skin penetration, and resume development inside the host in a process called activation. Activated infective larvae (iL3as) traverse the host body, ending up as parasitic adults in the small intestine.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Department of Genetics, Silberman Institute of Life Science, Edmond J. Safra Campus, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel.
Secretion of neurotransmitter- and neuropeptide-containing vesicles is a regulated process orchestrated by multiple proteins. Of these, mutants, defective in the and genes, responsible for neurotransmitter and neuropeptide release, respectively, are routinely used to elucidate neural and circuitry functions. While these mutants result in severe functional deficits, their neuroanatomy is assumed to be intact.
View Article and Find Full Text PDFCell Genom
December 2024
Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA. Electronic address:
Gene expression in individual neurons can change during development to adulthood and can have large effects on behavior. Additionally, the insulin/insulin-like signaling (IIS) pathway regulates many of the adult functions of Caenorhabditis elegans, including learning and memory, via transcriptional changes. We used the deep resolution of single-nucleus RNA sequencing to define the adult transcriptome of each neuron in wild-type and daf-2 mutants, revealing expression differences between L4 larval and adult neurons in chemoreceptors, synaptic genes, and learning/memory genes.
View Article and Find Full Text PDFPLoS Biol
November 2024
Department of Biology, Brandeis University, Waltham, Massachusetts, United States of America.
Sensory neurons contain morphologically diverse primary cilia that are built by intraflagellar transport (IFT) and house sensory signaling molecules. Since both ciliary structural and signaling proteins are trafficked via IFT, it has been challenging to decouple the contributions of IFT and cilia structure to neuronal responses. By acutely inhibiting IFT without altering cilia structure and vice versa, here we describe the differential roles of ciliary trafficking and sensory ending morphology in shaping chemosensory responses in Caenorhabditis elegans.
View Article and Find Full Text PDFBrain Behav Immun
January 2025
Department of Biology, Montclair State University, 1 Normal Avenue, Montclair, NJ 07043, United States; Sokol Institute for Pharmaceutical Life Sciences, Montclair State University, 1 Normal Avenue, Montclair, NJ 07043, United States. Electronic address:
Animals face the risk of encountering pathogenic microbes while foraging for resources. Assessing the risk of nutrition vs. infection can result in the behavioral regulation of immune processes.
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