Joana Ferreira, graduated in Biology in 2006 (University of Coimbra) and completed her PhD in Biosciences, specialty Neurosciences (University of Coimbra) in 2012, under the co-supervision of Ana Luísa Carvalho at the Center for Neuroscience and Cell Biology (University of Coimbra, Portugal) and Ann Marie Craig at the Center for Brain Health (University of British Columbia, Vancouver, Canada). After completing her PhD, she stayed at the Center for Neuroscience and Cell Biology (CNC) as a postdoctoral fellow to complete her studies on the molecular mechanisms of traffic of glutamate receptors. In 2016 she joined the group of Laurent Groc, at the Interdisciplinary Institute for Neuroscience (CNRS, University of Bordeaux, France), to explore the regulation of the nanoscale distribution of NMDA receptors (NMDARs). In 2021 she has joined the CNC-UC as an Assistant Investigator to start her independent line of research on the nanoscale architecture of the synapse and transsynaptic signaling.
EDUCATION
2012 PhD in Biosciences, specialization in Neurosciences, University of Coimbra (Portugal)
2006 Bachelor's in Biology, University of Coimbra (Portugal)
The study of the novel NMDA receptor-Neurexin-2 interaction and potential role in schizophrenia
Applications Invited PhD students
23
Scopus Publications
1070
Scholar Citations
17
Scholar h-index
18
Scholar i10-index
Scopus Publications
Neurexins, Ephrin receptors, and N-cadherin signaling as emerging mechanisms in synaptic dysfunction and neurodegenerative diseases João Gonçalves-Martins, Carlos Cação, Joana S. Ferreira Communications Biology, 2026 Synaptic cell adhesion molecules (SAMs) are essential for axon pathfinding and synaptic establishment during neurodevelopment, bridging the pre- and postsynaptic compartments across the synaptic cleft. While this function is well established, recent evidence has shown these proteins also exert key neuronal functions throughout the neuron’s life, regulating neuronal communication at mature synapses. Given these novel roles, SAMs are emerging as important elements relating to mental health and as significant contributors to age-related diseases, such as neurodegenerative disorders. For insight into this emerging role of SAMs, we focused on three pivotal regulator families of the central nervous system: Neurexins, Ephrin Receptors, and N-cadherins. This review summarizes the emerging roles of three pivotal cell adhesion families of the central nervous system in age-associated neurodegenerative disorders, highlighting new regulatory mechanisms at mature synapses.
Neuronal ARHGAP8 controls synapse structure and AMPA receptor-mediated synaptic transmission Jeannette Schmidt, Ângela S. Inácio, Joana Ferreira, Débora Serrenho, Renato Socodato, Nuno Beltrão, Luís F. Ribeiro, Paulo Pinheiro, João B. Relvas, Ana Luisa Carvalho Communications Biology, 2026 The aberrant formation and function of neuronal synapses are recognized as major phenotypes in many cases of neurodevelopmental (NDDs) and -psychiatric disorders (NPDs). A growing body of research has identified an expanding number of susceptibility genes encoding proteins with synaptic function. Here, we present the first brain-focused characterization of a potential new susceptibility gene, ARHAGP8, which encodes a Rho GTPase activating protein (RhoGAP). Accumulating evidence suggests that ARHGAP8 plays a pivotal role in the pathogenesis of NPDs/NDDs. We provide the first evidence for ARHGAP8 as a novel player at excitatory synapses, with its synaptic localisation linked to the presence of the developmentally important NMDA receptor subunit GluN2B. By increasing ARHGAP8 levels in hippocampal neurons to mimic elevated levels found in subsets of patients, we observed reductions in dendritic complexity and spine volume, accompanied by a significant decrease in synaptic AMPA receptor-mediated transmission. These results suggest that ARHGAP8 plays a role in shaping the morphology and function of excitatory synapses, and prompt further investigation of ARHGAP8 as a candidate gene in NDDs/NPDs. ARHGAP8 is identified as an excitatory synaptic protein linked to neurodevelopmental disorders. Increased ARHGAP8 levels reduce dendritic complexity, spine size, and AMPA receptor-mediated signalling, highlighting a role in synapse function.
Protocol for performing 3D-STORM-based nanoscale organization of NMDA receptors in hippocampal brain tissue Joana S. Ferreira, Jeanne Linarès-Loyez, Pierre Bon, Laurent Cognet, Laurent Groc STAR Protocols, 2025 Direct stochastic optical reconstruction microscopy (dSTORM) unveils ionotropic N-methyl-D-aspartate receptor (NMDAR) organization into discrete nanometer-size domains (nanoclusters) within the postsynaptic density (PSD) of glutamatergic synapses, tuning receptor signaling. Here, we present a protocol to perform 3D-dSTORM imaging of the NMDAR in organotypic and acute rat hippocampal brain slices by combining conventional dSTORM with fluorescent self-interference. We describe steps for sample preparation, immunohistochemistry, 3D-dSTORM acquisition, and image analysis to successfully super-resolve NMDAR nanodomains in three dimensions. For complete details on the use and execution of this protocol, please refer to Kellermayer et al., 1 Bon et al., 2 and Ferreira et al. 3 • Steps to prepare hippocampal brain slices for single-molecule imaging • Instructions for acute brain slice preparation from the rat brain after perfusion with PFA • Guidance on imaging settings to super-resolve NMDA receptor nanodomains in 2D and 3D • Analyze and compare the nanoscale organization of NMDA receptor subtypes in brain slices Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics. Direct stochastic optical reconstruction microscopy (dSTORM) unveils ionotropic N-methyl-D-aspartate receptor (NMDAR) organization into discrete nanometer-size domains (nanoclusters) within the postsynaptic density (PSD) of glutamatergic synapses, tuning receptor signaling. Here, we present a protocol to perform 3D-dSTORM imaging of the NMDAR in organotypic and acute rat hippocampal brain slices by combining conventional dSTORM with fluorescent self-interference. We describe steps for sample preparation, immunohistochemistry, 3D-dSTORM acquisition, and image analysis to successfully super-resolve NMDAR nanodomains in three dimensions.
GluN3A subunit tunes NMDA receptor synaptic trafficking and content during postnatal brain development Inmaculada M. González-González, John A. Gray, Joana Ferreira, María Jose Conde-Dusman, Delphine Bouchet, Isabel Perez-Otaño, Laurent Groc Cell Reports, 2023 Signaling via N-methyl-d-aspartate receptors (NMDARs) is critical for the maturation of glutamatergic synapses, partly through a developmental switch from immature synapses expressing primarily GluN2B- and GluN3A-containing subtypes to GluN2A-rich mature ones. This subunit switch is thought to underlie the synaptic stabilization of NMDARs necessary for neural network consolidation. However, the cellular mechanisms controlling the NMDAR exchange remain unclear. Using a combination of single-molecule and confocal imaging and biochemical and electrophysiological approaches, we show that surface GluN3A-NMDARs form a highly diffusive receptor pool that is loosely anchored to synapses. Remarkably, changes in GluN3A subunit expression selectively alter the surface diffusion and synaptic anchoring of GluN2A- but not GluN2B-NMDARs, possibly through altered interactions with cell surface receptors. The effects of GluN3A on NMDAR surface diffusion are restricted to an early time window of postnatal development in rodents, allowing GluN3A subunits to control the timing of NMDAR signaling maturation and neuronal network refinements.
Near-Infrared Carbon Nanotube Tracking Reveals the Nanoscale Extracellular Space around Synapses Chiara Paviolo, Joana S. Ferreira, Antony Lee, Daniel Hunter, Ivo Calaresu, Somen Nandi, Laurent Groc, Laurent Cognet Nano Letters, 2022 We provide evidence of a local synaptic nano-environment in the brain extracellular space (ECS) lying within 500 nm of postsynaptic densities. To reveal this brain compartment, we developed a correlative imaging approach dedicated to thick brain tissue based on single-particle tracking of individual fluorescent single wall carbon nanotubes (SWCNTs) in living samples and on speckle-based HiLo microscopy of synaptic labels. We show that the extracellular space around synapses bears specific properties in terms of morphology at the nanoscale and inner diffusivity. We finally show that the ECS juxta-synaptic region changes its diffusion parameters in response to neuronal activity, indicating that this nano-environment might play a role in the regulation of brain activity.
Interplay between NMDA receptor dynamics and the synaptic proteasome Joana S. Ferreira, Blanka Kellermayer, Ana Luísa Carvalho, Laurent Groc European Journal of Neuroscience, 2021 Proteasome activity at the excitatory synapse plays an important role in neuronal communication. The proteasome translocation to synapses is mediated by neuronal activity, in particular the activation of N‐methyl‐d‐aspartate receptors (NMDARs). These receptors are composed of different subunits with distinct trafficking properties that provide various signalling and plasticity features to the synapse. Yet whether the interplay between the proteasome and NMDAR relies on specific subunit properties remain unclear. Using a combination of single molecule and immunocytochemistry imaging approaches in rat hippocampal neurons, we unveil a specific interplay between GluN2B‐containing NMDARs (GluN2B‐NMDARs) and the synaptic proteasome. Sustained proteasome activation specifically increases GluN2B‐NMDAR (not GluN2A‐NMDAR) lateral diffusion. In addition, when GluN2B‐NMDAR expression is downregulated, the proteasome localization decreases at glutamatergic synapses. Collectively, our data fuel a model in which the cellular dynamics and location of GluN2B‐NMDARs and proteasome are intermingled, shedding new lights on the NMDAR‐dependent regulation of synaptic adaptation.
A Bottom-Up Approach to Red-Emitting Molecular-Based Nanoparticles with Natural Stealth Properties and their Use for Single-Particle Tracking Deep in Brain Tissue Morgane Rosendale, Jessica Flores, Chiara Paviolo, Paolo Pagano, Jonathan Daniel, Joana Ferreira, Jean‐Baptiste Verlhac, Laurent Groc, Laurent Cognet, Mireille Blanchard‐Desce Advanced Materials, 2021 Fluorescent nanoparticles dedicated to bioimaging applications should possess specific properties that have to be maintained in the aqueous, reactive, and crowded biological environment. These include chemical and photostability, small size (on the scale of subcellular structures), biocompatibility, high brightness, and good solubility. The latter is a major challenge for inorganic nanoparticles, which require surface coating to be made water soluble. Molecular‐based fluorescent organic nanoparticles (FONs) may prove a promising, spontaneously water‐soluble alternative, whose bottom‐up design allows for the fine‐tuning of individual properties. Here, the critical challenge of controlling the interaction of nanoparticles with cellular membranes is addressed. This is a report on bright, size‐tunable, red‐emitting, naturally stealthy FONs that do not require the use of antifouling agents to impede interactions with cellular membranes. As a proof of concept, single FONs diffusing up to 150 µm deep in brain tissue are imaged and tracked.
Fluorescent sp3 Defect-Tailored Carbon Nanotubes Enable NIR-II Single Particle Imaging in Live Brain Slices at Ultra-Low Excitation Doses Amit Kumar Mandal, Xiaojian Wu, Joana S. Ferreira, Mijin Kim, Lyndsey R. Powell, Hyejin Kwon, Laurent Groc, YuHuang Wang, Laurent Cognet Scientific Reports, 2020 Cellular and tissue imaging in the second near-infrared window (NIR-II, ~1000–1350 nm) is advantageous for in vivo studies because of low light extinction by biological constituents at these wavelengths. However, deep tissue imaging at the single molecule sensitivity has not been achieved in the NIR-II window due to lack of suitable bio-probes. Single-walled carbon nanotubes have emerged as promising near-infrared luminescent molecular bio-probes; yet, their inefficient photoluminescence (quantum yield ~1%) drives requirements for sizeable excitation doses (~1–10 kW/cm2) that are significantly blue-shifted from the NIR-II region (<850 nm) and may thus ultimately compromise live tissue. Here, we show that single nanotube imaging can be achieved in live brain tissue using ultralow excitation doses (~0.1 kW/cm2), an order of magnitude lower than those currently used. To accomplish this, we synthesized fluorescent sp3-defect tailored (6,5) carbon nanotubes which, when excited at their first order excitonic transition (~985 nm) fluoresce brightly at ~1160 nm. The biocompatibility of these functionalized nanotubes, which are wrapped by encapsulation agent (phospholipid-polyethylene glycol), is demonstrated using standard cytotoxicity assays. Single molecule photophysical studies of these biocompatible nanotubes allowed us to identify the optimal luminescence properties in the context of biological imaging.
Neurexins, Ephrin receptors, and N-cadherin signaling as emerging mechanisms in synaptic dysfunction and neurodegenerative diseases J Gonçalves-Martins, C Cação, JS Ferreira Communications Biology , 2026 2026
Neuronal ARHGAP8 controls synapse structure and AMPA receptor-mediated synaptic transmission J Schmidt, ÂS Inácio, J Ferreira, D Serrenho, R Socodato, N Beltrão, ... Communications Biology , 2026 2026 Citations: 2
Protocol for performing 3D-STORM-based nanoscale organization of NMDA receptors in hippocampal brain tissue JS Ferreira, J Linarès-Loyez, P Bon, L Cognet, L Groc STAR protocols 6 (1) , 2025 2025
Type I TARPs regulate Kv7. 2 potassium channels and susceptibility to seizures MV Rodrigues, ÂS Inácio, MV Soldovieri, S Ribau, TM Leal, T Baurberg, ... bioRxiv, 2024.08. 09.607194 , 2024 2024
Surface glutamate receptor nanoscale organization with super-resolution microscopy (dstorm) J Ferreira, L Groc New Technologies for Glutamate Interaction: Neurons and Glia, 35-52 , 2024 2024 Citations: 2
GluN3A subunit tunes NMDA receptor synaptic trafficking and content during postnatal brain development IM Gonzalez-Gonzalez, JA Gray, J Ferreira, MJ Conde-Dusman, ... Cell reports 42 (5) , 2023 2023 Citations: 17
Near-infrared carbon nanotube tracking reveals the nanoscale extracellular space around synapses C Paviolo, JS Ferreira, A Lee, D Hunter, I Calaresu, S Nandi, L Groc, ... Nano Letters 22 (17), 6849-6856 , 2022 2022 Citations: 40
Interplay between NMDA receptor dynamics and the synaptic proteasome JS Ferreira, B Kellermayer, AL Carvalho, L Groc European Journal of Neuroscience 54 (6), 6000-6011 , 2021 2021 Citations: 18
CaMKII activation persistently segregates postsynaptic proteins via liquid phase separation T Hosokawa, PW Liu, Q Cai, JS Ferreira, F Levet, C Butler, JB Sibarita, ... Nature Neuroscience 24 (6), 777-785 , 2021 2021 Citations: 154
A Bottom‐Up Approach to Red‐Emitting Molecular‐Based Nanoparticles with Natural Stealth Properties and their Use for Single‐Particle Tracking Deep in Brain Tissue M Rosendale, J Flores, C Paviolo, P Pagano, J Daniel, J Ferreira, ... Advanced Materials 33 (22), 2006644 , 2021 2021 Citations: 25
What Can We Learn from Carbon Nanotube Diffusion Trajectories Recorded in the Live Brain? A Lee, N Danne, C Paviolo, F Soria, J Ferreira, E Bezard, L Groc, ... Electrochemical Society Meeting Abstracts 239, 527-527 , 2021 2021
CaMKII activation triggers persistent formation and segregation of postsynaptic liquid phase T Hosokawa, PW Liu, Q Cai, JS Ferreira, F Levet, C Butler, JB Sibarita, ... bioRxiv, 2020.11. 25.397091 , 2020 2020 Citations: 1
Distance-dependent regulation of NMDAR nanoscale organization along hippocampal neuron dendrites JS Ferreira, JP Dupuis, B Kellermayer, N Bénac, C Manso, D Bouchet, ... Proceedings of the National Academy of Sciences 117 (39), 24526-24533 , 2020 2020 Citations: 37
Correlative imaging of single carbon nanotubes and fluorescently labelled neuronal structures in the extracellular space of live brains C Paviolo, JS Ferreira, A Lee, L Groc, L Cognet Neurophotonics 11360, 49-56 , 2020 2020
Fluorescent sp 3 Defect-Tailored Carbon Nanotubes Enable NIR-II Single Particle Imaging in Live Brain Slices at Ultra-Low Excitation Doses AK Mandal, X Wu, JS Ferreira, M Kim, LR Powell, H Kwon, L Groc, ... Scientific Reports 10 (1), 5286 , 2020 2020 Citations: 97
Nanoscale exploration of the extracellular space in the live brain by combining single carbon nanotube tracking and super-resolution imaging analysis C Paviolo, FN Soria, JS Ferreira, A Lee, L Groc, E Bezard, L Cognet Methods 174, 91-99 , 2020 2020 Citations: 77
Self-interference (SELFI) microscopy for live super-resolution imaging and single particle tracking in 3D J Linarès-Loyez, JS Ferreira, O Rossier, B Lounis, G Giannone, L Groc, ... Frontiers in Physics 7, 68 , 2019 2019 Citations: 27
Differential nanoscale topography and functional role of GluN2-NMDA receptor subtypes at glutamatergic synapses B Kellermayer, JS Ferreira, J Dupuis, F Levet, D Grillo-Bosch, L Bard, ... Neuron 100 (1), 106-119. e7 , 2018 2018 Citations: 151
Co-agonists differentially tune GluN2B-NMDA receptor trafficking at hippocampal synapses JS Ferreira, T Papouin, L Ladépêche, A Yao, VC Langlais, D Bouchet, ... Elife 6, e25492 , 2017 2017 Citations: 126
Single nanoparticle tracking of -methyl- d -aspartate receptors in cultured and intact brain tissue JA Varela, JS Ferreira, JP Dupuis, P Durand, D Bouchet, L Groc Neurophotonics 3 (4), 041808-041808 , 2016 2016 Citations: 26
MOST CITED SCHOLAR PUBLICATIONS
CaMKII activation persistently segregates postsynaptic proteins via liquid phase separation T Hosokawa, PW Liu, Q Cai, JS Ferreira, F Levet, C Butler, JB Sibarita, ... Nature Neuroscience 24 (6), 777-785 , 2021 2021 Citations: 154
Differential nanoscale topography and functional role of GluN2-NMDA receptor subtypes at glutamatergic synapses B Kellermayer, JS Ferreira, J Dupuis, F Levet, D Grillo-Bosch, L Bard, ... Neuron 100 (1), 106-119. e7 , 2018 2018 Citations: 151
Co-agonists differentially tune GluN2B-NMDA receptor trafficking at hippocampal synapses JS Ferreira, T Papouin, L Ladépêche, A Yao, VC Langlais, D Bouchet, ... Elife 6, e25492 , 2017 2017 Citations: 126
Fluorescent sp 3 Defect-Tailored Carbon Nanotubes Enable NIR-II Single Particle Imaging in Live Brain Slices at Ultra-Low Excitation Doses AK Mandal, X Wu, JS Ferreira, M Kim, LR Powell, H Kwon, L Groc, ... Scientific Reports 10 (1), 5286 , 2020 2020 Citations: 97
Nanoscale exploration of the extracellular space in the live brain by combining single carbon nanotube tracking and super-resolution imaging analysis C Paviolo, FN Soria, JS Ferreira, A Lee, L Groc, E Bezard, L Cognet Methods 174, 91-99 , 2020 2020 Citations: 77
GluN2B-containing NMDA receptors regulate AMPA receptor traffic through anchoring of the synaptic proteasome JS Ferreira, J Schmidt, P Rio, R Águas, A Rooyakkers, KW Li, AB Smit, ... Journal of Neuroscience 35 (22), 8462-8479 , 2015 2015 Citations: 77
Multiple domains in the C-terminus of NMDA receptor GluN2B subunit contribute to neuronal death following in vitro ischemia MM Vieira, J Schmidt, JS Ferreira, K She, S Oku, M Mele, AE Santos, ... Neurobiology of disease 89, 223-234 , 2016 2016 Citations: 56
Glutamate binding to the GluN2B subunit controls surface trafficking of N-methyl-D-aspartate (NMDA) receptors K She, JS Ferreira, AL Carvalho, AM Craig Journal of Biological Chemistry 287 (33), 27432-27445 , 2012 2012 Citations: 54
Contactin-associated protein 1 (Caspr1) regulates the traffic and synaptic content of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA)-type glutamate receptors SD Santos, O Iuliano, L Ribeiro, J Veran, JS Ferreira, P Rio, C Mulle, ... Journal of Biological Chemistry 287 (9), 6868-6877 , 2012 2012 Citations: 47
Near-infrared carbon nanotube tracking reveals the nanoscale extracellular space around synapses C Paviolo, JS Ferreira, A Lee, D Hunter, I Calaresu, S Nandi, L Groc, ... Nano Letters 22 (17), 6849-6856 , 2022 2022 Citations: 40
Distance-dependent regulation of NMDAR nanoscale organization along hippocampal neuron dendrites JS Ferreira, JP Dupuis, B Kellermayer, N Bénac, C Manso, D Bouchet, ... Proceedings of the National Academy of Sciences 117 (39), 24526-24533 , 2020 2020 Citations: 37
Self-interference (SELFI) microscopy for live super-resolution imaging and single particle tracking in 3D J Linarès-Loyez, JS Ferreira, O Rossier, B Lounis, G Giannone, L Groc, ... Frontiers in Physics 7, 68 , 2019 2019 Citations: 27
Single nanoparticle tracking of -methyl- d -aspartate receptors in cultured and intact brain tissue JA Varela, JS Ferreira, JP Dupuis, P Durand, D Bouchet, L Groc Neurophotonics 3 (4), 041808-041808 , 2016 2016 Citations: 26
A Bottom‐Up Approach to Red‐Emitting Molecular‐Based Nanoparticles with Natural Stealth Properties and their Use for Single‐Particle Tracking Deep in Brain Tissue M Rosendale, J Flores, C Paviolo, P Pagano, J Daniel, J Ferreira, ... Advanced Materials 33 (22), 2006644 , 2021 2021 Citations: 25
Interplay between NMDA receptor dynamics and the synaptic proteasome JS Ferreira, B Kellermayer, AL Carvalho, L Groc European Journal of Neuroscience 54 (6), 6000-6011 , 2021 2021 Citations: 18
Activity and protein kinase C regulate synaptic accumulation of N-methyl-D-aspartate (NMDA) receptors independently of GluN1 splice variant JS Ferreira, A Rooyakkers, K She, L Ribeiro, AL Carvalho, AM Craig Journal of Biological Chemistry 286 (32), 28331-28342 , 2011 2011 Citations: 18
Characterization of alternatively spliced isoforms of AMPA receptor subunits encoding truncated receptors AR Gomes, JS Ferreira, AV Paternain, J Lerma, CB Duarte, AL Carvalho Molecular and Cellular Neuroscience 37 (2), 323-334 , 2008 2008 Citations: 18
GluN3A subunit tunes NMDA receptor synaptic trafficking and content during postnatal brain development IM Gonzalez-Gonzalez, JA Gray, J Ferreira, MJ Conde-Dusman, ... Cell reports 42 (5) , 2023 2023 Citations: 17
Neuronal ARHGAP8 controls synapse structure and AMPA receptor-mediated synaptic transmission J Schmidt, ÂS Inácio, J Ferreira, D Serrenho, R Socodato, N Beltrão, ... Communications Biology , 2026 2026 Citations: 2
Surface glutamate receptor nanoscale organization with super-resolution microscopy (dstorm) J Ferreira, L Groc New Technologies for Glutamate Interaction: Neurons and Glia, 35-52 , 2024 2024 Citations: 2