2023
CSF-contacting neurons respond to Streptococcus pneumoniae and promote host survival during central nervous system infection
Prendergast A, Jim K, Marnas H, Desban L, Quan F, Djenoune L, Laghi V, Hocquemiller A, Lunsford E, Roussel J, Keiser L, Lejeune F, Dhanasekar M, Bardet P, Levraud J, van de Beek D, Vandenbroucke-Grauls C, Wyart C. CSF-contacting neurons respond to Streptococcus pneumoniae and promote host survival during central nervous system infection. Current Biology 2023, 33: 940-956.e10. PMID: 36791723, DOI: 10.1016/j.cub.2023.01.039.Peer-Reviewed Original ResearchConceptsCentral nervous systemCerebrospinal fluidSensory neuronsNervous systemStreptococcus pneumoniaeCentral nervous system infectionBlockade of neurotransmissionCentral sensory neuronsNervous system infectionHost survivalPeripheral nervous systemCell-specific ablationEpileptic-like seizuresCSF-contacting neuronsSupernatants of cellsPneumococcal meningitisSystem infectionBitter taste receptorsCSF infectionPneumoniae infectionNeurotropic virusesSpinal cordPathogenic bacteriaPostural controlMeningitis
2018
Pkd2l1 is required for mechanoception in cerebrospinal fluid-contacting neurons and maintenance of spine curvature
Sternberg JR, Prendergast AE, Brosse L, Cantaut-Belarif Y, Thouvenin O, Orts-Del’Immagine A, Castillo L, Djenoune L, Kurisu S, McDearmid JR, Bardet PL, Boccara C, Okamoto H, Delmas P, Wyart C. Pkd2l1 is required for mechanoception in cerebrospinal fluid-contacting neurons and maintenance of spine curvature. Nature Communications 2018, 9: 3804. PMID: 30228263, PMCID: PMC6143598, DOI: 10.1038/s41467-018-06225-x.Peer-Reviewed Original ResearchConceptsCentral canalCSF-cNsSpontaneous activityCSF flowCerebrospinal fluid-contacting neuronsSpine curvatureCSF-contacting neuronsCerebrospinal fluid flowSpinal cordIdiopathic scoliosisSingle-channel openingsCalcium activityPKD2L1 channelPKD2L1Mechanosensory cellsNeuronsCanalChannel openingMechanoceptionKyphosisCilia motilityCord
2017
Mechanosensory neurons control the timing of spinal microcircuit selection during locomotion
Knafo S, Fidelin K, Prendergast A, Tseng PB, Parrin A, Dickey C, Böhm UL, Figueiredo SN, Thouvenin O, Pascal-Moussellard H, Wyart C. Mechanosensory neurons control the timing of spinal microcircuit selection during locomotion. ELife 2017, 6: e25260. PMID: 28623664, PMCID: PMC5499942, DOI: 10.7554/elife.25260.Peer-Reviewed Original ResearchConceptsSpinal cordMechanosensory neuronsRohon-Beard neuronsMonosynaptic inputSpinal circuitsMotor poolsCordNeuronsV2a interneuronsVertebrate spinal cordMechanosensory feedbackNumerous physiological studiesSimple locomotionPhysiological studiesActive locomotionLocomotor speedEscape responseInterneuronsZebrafish larvae
2016
Intraspinal Sensory Neurons Provide Powerful Inhibition to Motor Circuits Ensuring Postural Control during Locomotion
Hubbard JM, Böhm UL, Prendergast A, Tseng PB, Newman M, Stokes C, Wyart C. Intraspinal Sensory Neurons Provide Powerful Inhibition to Motor Circuits Ensuring Postural Control during Locomotion. Current Biology 2016, 26: 2841-2853. PMID: 27720623, DOI: 10.1016/j.cub.2016.08.026.Peer-Reviewed Original ResearchConceptsInhibitory postsynaptic currentsCSF-cNsSensory neuronsPostural controlMotor circuitsFast motor neuronsEscape circuitCerebrospinal fluid-contacting neuronsLarge inhibitory postsynaptic currentsGABAergic neuronsPostsynaptic currentsSpinal cordMotor neuronsVivo electrophysiologyRepetitive stimulationSomatic inhibitionSensory interneuronsNeuronsPowerful inhibitionInhibitory feedbackRecent evidenceVertebrate spinal cordMechanosensory responsesInhibitionInterneuronsCSF-contacting neurons regulate locomotion by relaying mechanical stimuli to spinal circuits
Böhm UL, Prendergast A, Djenoune L, Nunes Figueiredo S, Gomez J, Stokes C, Kaiser S, Suster M, Kawakami K, Charpentier M, Concordet JP, Rio JP, Del Bene F, Wyart C. CSF-contacting neurons regulate locomotion by relaying mechanical stimuli to spinal circuits. Nature Communications 2016, 7: 10866. PMID: 26946992, PMCID: PMC4786674, DOI: 10.1038/ncomms10866.Peer-Reviewed Original ResearchConceptsSpinal cordSpinal circuitsCentral pattern generatorCSF-cNsCerebrospinal fluid-contacting neuronsSpinal central pattern generatorVentral spinal cordLocomotor central pattern generatorCSF-contacting neuronsCentral canalSpinal bendingCordNeuronsMechanical stimuliMechanosensory organsOrgansSensory modalitiesAnimals
2015
State-Dependent Modulation of Locomotion by GABAergic Spinal Sensory Neurons
Fidelin K, Djenoune L, Stokes C, Prendergast A, Gomez J, Baradel A, Del Bene F, Wyart C. State-Dependent Modulation of Locomotion by GABAergic Spinal Sensory Neurons. Current Biology 2015, 25: 3035-3047. PMID: 26752076, DOI: 10.1016/j.cub.2015.09.070.Peer-Reviewed Original ResearchConceptsLocomotor central pattern generatorSensory neuronsCerebrospinal fluidCSF-cNsSpinal cordCentral pattern generatorSpinal sensory neuronsActivity of neuronsEntire nervous systemState-dependent modulationGABAergic synapsesSlow locomotionGlutamatergic interneuronsPremotor levelState-dependent mannerNervous systemFunctional connectivityRostrocaudal propagationNeuronsVertebrate spinal cordSelective activationCordEpithelial boundaryActivationFictive preparation