Publications by Quentin Barraud

Single-cell and spatial atlases of spinal cord injury in the Tabulae Paralytica

Bernard Schneider, Grégoire Courtine, Quentin Barraud, Michael V. Sofroniew, Jocelyne Bloch, Claudia Kathe, Nicholas David James, Matthieu Pierre Gautier, Thomas Haynes Hutson, Michael Alexander Skinnider

Here, we introduce the Tabulae Paralytica—a compilation of four atlases of spinal cord injury (SCI) comprising a single-nucleus transcriptome atlas of half a million cells, a multiome atlas pairing transcriptomic and epigenomic measurements within the same ...

Springer Science and Business Media LLC2024

Hypothalamic deep brain stimulation augments walking after spinal cord injury

Léonie Asboth, Grégoire Courtine, Quentin Barraud, Kay Alexander Bartholdi, Laetitia Danielle Philippine Baud, Mark Andrew Anderson, Nicolas Hankov, Katia Galan, Robin Jonathan Demesmaeker, Newton Cho, Jocelyne Bloch, Claudia Kathe, Nicholas David James, Matthieu Pierre Gautier, Jimmy James Ravier, Thomas Haynes Hutson, Viviana Aureli

A spinal cord injury (SCI) disrupts the neuronal projections from the brain to the region of the spinal cord that produces walking, leading to various degrees of paralysis. Here, we aimed to identify brain regions that steer the recovery of walking after i ...

NATURE PORTFOLIO2024

Early intensive rehabilitation reverses locomotor disruption, decrease brain inflammation and induces neuroplasticity following experimental Cerebral Palsy

Yohan Van de Looij, Grégoire Courtine, Quentin Barraud, Laetitia Danielle Philippine Baud

Background: Cerebral Palsy (CP) is a major cause of motor and cognitive disability in children due to injury to the developing brain. Early intensive sensorimotor rehabilitation has been shown to change brain structure and reduce CP symptoms severity. We c ...

ACADEMIC PRESS INC ELSEVIER SCIENCE2024

Recovery of walking after paralysis by regenerating characterized neurons to their natural target region

Bernard Schneider, Grégoire Courtine, Quentin Barraud, Laetitia Danielle Philippine Baud, Mark Andrew Anderson, Katia Galan, Newton Cho, Jocelyne Bloch, Claudia Kathe, Nicholas David James, Marco Milano, Jordan Squair, Matthieu Pierre Gautier, Anna Lasne, Thomas Haynes Hutson, Steven Lee Ceto, Michael Alexander Skinnider

Axon regeneration can be induced across anatomically complete spinal cord injury (SCI), but robust functional restoration has been elusive. Whether restoring neurological functions requires directed regeneration of axons from specific neuronal subpopulatio ...

American Association for the Advancement of Science2023

Wireless closed-loop optogenetics across the entire dorsoventral spinal cord in mice

Léonie Asboth, Jérôme Gandar, Frédéric Pierre Gérald Michoud, Stéphanie Lacour, Grégoire Courtine, Quentin Barraud, Noaf Salah Ali Alwahab, Ivan Furfaro, Ileana Ozana Jelescu, Andreas Rowald, Claudia Kathe, Valentina Marie Paggi, Jimmy James Ravier, Kyungjin Kim, Thomas Haynes Hutson

Optoelectronic systems can exert precise control over targeted neurons and pathways throughout the brain in untethered animals, but similar technologies for the spinal cord are not well established. In the present study, we describe a system for ultrafast, ...

NATURE PORTFOLIO2022

Epidural electrical stimulation of the cervical dorsal roots restores voluntary upper limb control in paralyzed monkeys

Tomislav Milekovic, Giuseppe Schiavone, Florian Dylan Fallegger, Stéphanie Lacour, Grégoire Courtine, Quentin Barraud, Katia Galan, Jocelyne Bloch, Nicholas David James

Regaining arm control is a top priority for people with paralysis. Unfortunately, the complexity of the neural mechanisms underlying arm control has limited the effectiveness of neurotechnology approaches. Here, we exploited the neural function of survivin ...

NATURE PORTFOLIO2022

Activity-dependent spinal cord neuromodulation rapidly restores trunk and leg motor functions after complete paralysis

Dimitri Nestor Alice Van De Ville, Léonie Asboth, Nawal Noëlle Kinany, Salif Axel Komi, Silvestro Micera, Grégoire Courtine, Miroslav Caban, Quentin Barraud, Marco Capogrosso, Fabien Bertrand Paul Wagner, Robin Jonathan Demesmaeker, Andreas Rowald, Nathan Antoine Greiner, Jocelyne Bloch, Sergio Daniel Hernandez, Laura Ann McCracken, Henri Charles Alexandre Lorach, Edeny Baaklini, Jimmy James Ravier, Carmina Andrea Galvez Solano

Epidural electrical stimulation (EES) targeting the dorsal roots of lumbosacral segments restores walking in people with spinal cord injury (SCI). However, EES is delivered with multielectrode paddle leads that were originally designed to target the dorsal ...

NATURE PORTFOLIO2022

Longitudinal interrogation of sympathetic neural circuits and hemodynamics in preclinical models

Grégoire Courtine, Victor Perez Puchalt, Quentin Barraud, Jordan Squair, Matthieu Pierre Gautier, Loïs Thomas Romain Mahe, Jan Elaine Cuevas Soriano, Rémi Bernard René Hudelle, Suje Amir

Neurological disorders, including spinal cord injury, result in hemodynamic instability due to the disruption of supraspinal projections to the sympathetic circuits located in the spinal cord. We recently developed a preclinical model that allows the ident ...

NATURE PORTFOLIO2022

The neurons that restore walking after paralysis

Léonie Asboth, Salif Axel Komi, Stéphanie Lacour, Grégoire Courtine, Quentin Barraud, Laetitia Danielle Philippine Baud, Katia Galan, Fabien Bertrand Paul Wagner, Robin Jonathan Demesmaeker, Andreas Rowald, Newton Cho, Jocelyne Bloch, Claudia Kathe, Nicholas David James, Jordan Squair, Matthieu Pierre Gautier, Kyungjin Kim, Thomas Haynes Hutson, Steven Lee Ceto

A spinal cord injury interrupts pathways from the brain and brainstem that project to the lumbar spinal cord, leading to paralysis. Here we show that spatiotemporal epidural electrical stimulation (EES) of the lumbar spinal cord(1-3) applied during neurore ...

NATURE PORTFOLIO2022

Natural and targeted circuit reorganization after spinal cord injury

Grégoire Courtine, Quentin Barraud, Mark Andrew Anderson, Jocelyne Bloch, Claudia Kathe, Jordan Squair, Matthieu Pierre Gautier, Thomas Haynes Hutson

The authors summarize changes in circuits after spinal cord injury and current strategies to target these circuits in order to improve recovery, but also advocate for new concepts of reorganizing circuits informed by multi-omic single-cell atlases. ...

NATURE PORTFOLIO2022

Preclinical upper limb neurorobotic platform to assess, rehabilitate, and develop therapies

Stéphanie Lacour, Florent-Valéry Coen, Silvestro Micera, Grégoire Courtine, Selin Anil, Quentin Barraud, Newton Cho, Nicholas David James

Numerous neurorehabilitative, neuroprosthetic, and repair interventions aim to address the consequences of upper limb impairments after neurological disorders. Although these therapies target widely different mechanisms, they share the common need for a pr ...

AMER ASSOC ADVANCEMENT SCIENCE2022

Elezanumab, a human anti-RGMa monoclonal antibody, promotes neuroprotection, neuroplasticity, and neurorecovery following a thoracic hemicompression spinal cord injury in non-human primates

Grégoire Courtine, Quentin Barraud, Lili Huang, Xiaomeng Zhang

Spinal cord injury (SCI) is a devastating condition characterized by loss of function, secondary to damaged spinal neurons, disrupted axonal connections, and myelin loss. Spontaneous recovery is limited, and there are no approved pharmaceutical treatments ...

2021

Introducing a biomimetic coating for graphene neuroelectronics: toward in-vivo applications

Grégoire Courtine, Marco Bonizzato, Quentin Barraud, Elodie Rey

Electronic micro and nano-devices are suitable tools to monitor the activity of many individual neurons over mesoscale networks. However the inorganic materials currently used in microelectronics are barely accepted by neural cells and tissues, thus limiti ...

IOP PUBLISHING LTD2021

Neuroprosthetic baroreflex controls haemodynamics after spinal cord injury

Jérôme Gandar, Giuseppe Schiavone, Nicolas Vachicouras, Florian Dylan Fallegger, Salif Axel Komi, Stéphanie Lacour, Arnaud Bichat, Grégoire Courtine, Quentin Barraud, Kay Alexander Bartholdi, Eduardo Martin Moraud, Marco Capogrosso, Mark Andrew Anderson, Fabien Bertrand Paul Wagner, Robin Jonathan Demesmaeker, Ileana Ozana Jelescu, Andreas Rowald, Newton Cho, Jocelyne Bloch, Claudia Kathe, Nicholas David James, Jordan Squair, Laura Ann McCracken, Matthieu Pierre Gautier, Loïs Thomas Romain Mahe, Jimmy James Ravier

Spinal cord injury (SCI) induces haemodynamic instability that threatens survival(1-3), impairs neurological recovery(4,5), increases the risk of cardiovascular disease(6,7), and reduces quality of life(8,9). Haemodynamic instability in this context is due ...

NATURE RESEARCH2021

Cell type prioritization in single-cell data

Grégoire Courtine, Quentin Barraud, Mark Andrew Anderson, Claudia Kathe, Marco Milano, Jordan Squair, Matthieu Pierre Gautier, Gioele La Manno, Thomas Haynes Hutson, Michael Alexander Skinnider

The cell types affected by biological perturbations in complex tissues are uncovered by single-cell analysis. ...

NATURE PUBLISHING GROUP2021

Confronting false discoveries in single-cell differential expression

Grégoire Courtine, Quentin Barraud, Mark Andrew Anderson, Claudia Kathe, Nicholas David James, Jordan Squair, Matthieu Pierre Gautier, Gioele La Manno, Thomas Haynes Hutson, Rémi Bernard René Hudelle, Michael Alexander Skinnider

Differential expression analysis of single-cell transcriptomics allows scientists to dissect cell-type-specific responses to biological perturbations. Here, the authors show that many commonly used methods are biased and can produce false discoveries. ...

Nature Portfolio2021

Soft Printable Electrode Coating for Neural Interfaces

Florian Dylan Fallegger, Elvira Pirondini, Stéphanie Lacour, Arnaud Bichat, Grégoire Courtine, Quentin Barraud, Michael Shur

The mechanical mismatch between implantable interfaces and neural tissues may be reduced by employing soft polymeric materials. Here, we report on a simple strategy to prepare and pattern a soft electrode coating of neural interfacing devices based on a sc ...

2020

Cbp-dependent histone acetylation mediates axon regeneration induced by environmental enrichment in rodent spinal cord injury models

Grégoire Courtine, Quentin Barraud, Kay Alexander Bartholdi, Claudia Kathe, Thomas Haynes Hutson

After a spinal cord injury, axons fail to regenerate in the adult mammalian central nervous system, leading to permanent deficits in sensory and motor functions. Increasing neuronal activity after an injury using electrical stimulation or rehabilitation ca ...

AMER ASSOC ADVANCEMENT SCIENCE2019

Cortico–reticulo–spinal circuit reorganization enables functional recovery after severe spinal cord contusion

Bernard Schneider, Léonie Asboth, Grégoire Courtine, Janine Beauparlant, Lucia Florinda Friedli Wittler, Selin Anil, Quentin Barraud, Cristina Martinez Gonzalez, Julie Kreider, Laetitia Danielle Philippine Baud, Mark Andrew Anderson, Galyna Pidpruzhnykova, Elodie Rey, Polina Shkorbatova

Severe spinal cord contusions interrupt nearly all brain projections to lumbar circuits producing leg movement. Failure of these projections to reorganize leads to permanent paralysis. Here we modeled these injuries in rodents. A severe contusion abolished ...

2018

Applying Whole Organ Clearing Techniques To Spinal Cord Injury: A Survey Of Techniques

Olivier Burri, Thierry Laroche, Laura Battista, Grégoire Courtine, Romain Guiet, Quentin Barraud, Newton Cho

MARY ANN LIEBERT2018