Neuroimmunology visual

Where Immunity Meets the Brain.

Enter the encephalitis_verse: a translational programme decoding how viral and autoimmune attacks reshape neuronal circuits, synapses and long-term neurological outcome.

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Scientific premise

Encephalitis is more than brain inflammation. It can transform immune activation into lasting synaptic and neuronal injury.

Encephalitis can be triggered by viral infection, post-infectious autoimmunity or primary autoimmune responses. Even when the acute inflammation resolves, many patients are left with seizures, cognitive impairment, behavioural symptoms and long-term neurological disability.

Our central question is how protective immune responses become damaging: how T cells, antibodies and CNS phagocytes reshape neuronal circuits, strip synapses and make neurons vulnerable to degeneration.

The encephalitis_verse combines rare human brain tissue, single-nucleus and spatial transcriptomics, multiplex imaging, CSF proteomics and causal in vivo models to identify mechanisms, biomarkers and therapeutic opportunities.

Visual evidence

From molecules to circuits.

From immune activation to synaptic dysfunction. Multiplex immunofluorescence, whole-slide imaging and high-resolution confocal microscopy reveal how inflammatory niches emerge within the brain and how they drive complement deposition, phagocyte activation and synaptic elimination.

Representative multimodal microscopy and 3D reconstructions from the encephalitis_verse programme.

Research questions

Four lines of work, one biological problem: how immunity damages neuronal circuits.

01

Immune-mediated synaptopathy

How do CD8⁺ T cells, antibodies and CNS phagocytes disrupt synaptic connectivity before irreversible neuronal loss occurs?

  • STAT1–CCL2
  • GPNMB⁺ phagocytes
  • synaptic stripping
02

Neuroimmune niches

Which cellular neighborhoods sustain chronic inflammation inside human brain tissue, and how do they relate to infected cells, glia and vulnerable neurons?

  • spatial transcriptomics
  • TRM CD8⁺ cells
  • local interferon
03

Shared mechanisms across encephalitides

Do viral, post-infectious and autoimmune encephalitis converge onto common pathways of synaptic dysfunction and neurodegeneration?

  • TBE · WNV · VZV
  • PML · PML-IRIS
  • AE subtypes
04

From mechanism to therapy

Can molecular signatures in tissue and CSF predict outcome and reveal pathways that can be targeted without compromising antiviral immunity?

  • CSF proteomics
  • biomarkers
  • JAK–STAT axis
Scientific goal

Understanding how encephalitis turns inflammation into lasting brain injury.

Immune activation can resolve, but in many patients it leaves persistent neurological sequelae through synaptic dysfunction and neuronal damage.

Encephalitis, neuroinflammation and neurodegeneration overview
Supported by SNSF Ambizione
Swiss National Science Foundation logo
Scientific storyline

A coherent programme built from synapses to disease mechanisms.

2018 · Cell

Neurons instruct synaptic stripping

Neuronal STAT1–CCL2 signalling recruits phagocytes and drives synaptic loss during CD8⁺ T-cell attack.

2022 · Brain

Phagocytes link HIV inflammation to degeneration

Human Neuro-HIV tissue reveals GPNMB/LGALS3/CTSB phagocyte states associated with synapse engulfment.

2025 · Acta Neuropathologica

pSTAT1 defines T-cell-mediated AE

Intracellular-antigen AE shows neuronal pSTAT1, resident memory CD8⁺ cells and GPNMB⁺ phagocytes.

2026 · Brain

Autoimmunity can initiate degeneration

IgLON5 disease is framed as an autoantibody-first cascade leading to secondary tauopathy.

2026 · TINS

STAT1 as a phase switch

A unifying model where neuronal STAT1 shifts from antiviral defense to durable synaptopathy when sustained.

Recognition

Awarded work and competitive funding supporting the encephalitis_verse.

Prizes

2026
Excellence PrizeFaculty of Biology and Medicine, University of Lausanne
2025
Prize for the best publication in translational neurologySwiss Neurological Society
2023
Prize Etienne Gorjux for experimental pathologyUniversity of Geneva · Faculty of Medicine
2021
Franco Regli Prize for NeurodegenerationFranco Regli Foundation
2019
Prize Alexander F. Müller of physiopathologyUniversity of Geneva · Faculty of Medicine

Funding

2026
SNSF AmbizioneSwiss National Science Foundation
2025
Swiss Neurological Society Research FellowshipSwiss Neurological Society
2025
Baasch-Medicus StiftungBaasch-Medicus Foundation
2024
Foundation GlauserFondation Anna et André Livio Glauser
2024
Young Investigator in precision medicineFBM, Université de Lausanne
2024
Young Investigator GrantNovartis Foundation for Medical-Biological Research
Selected discoveries

Discoveries shaping immune-mediated brain injury.

From fundamental mechanisms to translational neuroimmunology.

Cell 2018 graphical abstract
Cell · 2018

Neurons actively orchestrate their own synaptic elimination.

First demonstration that neurons under CD8⁺ T-cell attack engage a STAT1–CCL2 programme that recruits phagocytes, drives synaptic stripping and produces neurological disease.

STAT1–CCL2CD8⁺ T cellsphagocyte-mediated synaptopathy
Read article →
Brain 2022 figure
Brain · 2022

A neurodegenerative phagocyte programme emerges in Neuro-HIV.

Post-mortem human brain tissue revealed LGALS3⁺/GPNMB⁺/CTSB⁺/HLA-DR⁺ CNS phagocytes topographically linked to inflammation and synaptic stripping.

Neuro-HIVGPNMB⁺ phagocytessynaptic engulfment
Read article →
Acta Neuropathologica 2025 figure
Acta Neuropathologica · 2025

Neuronal pSTAT1 marks T-cell-mediated autoimmune encephalitis.

Across a multicentre human cohort, intracellular-antigen AE was defined by neuronal pSTAT1, brain-resident memory CD8⁺ T cells and GPNMB⁺ phagocytes with synaptic engulfment.

IC-AETRM CD8⁺ cellspSTAT1 biomarker
Read article →
Brain 2026 editorial figure
Brain · 2026

Autoantibodies can sit upstream of neurodegeneration.

A conceptual framework for IgLON5 disease in which antibody binding initiates nuclear stress and a downstream tauopathy — highlighting the importance of early treatment windows.

IgLON5autoantibody-firstsecondary tauopathy
Read article →
Trends in Neurosciences 2026 figure
Trends in Neurosciences · 2026

STAT1 is a molecular switch from antiviral defense to synaptopathy.

A unifying model proposing that neuronal pSTAT1 is protective during acute antiviral responses but becomes maladaptive when interferon signalling persists.

phase switchinterferonJAK–STAT therapeutics
Read article →
Latest news

Updates from the encephalitis_verse.

A compact record of awards, publications and milestones shaping the transition from neuroinflammation to neurodegeneration research.

2026

SNSF Ambizione awarded

Support for a translational programme investigating immune-mediated synaptopathy and neuronal injury in encephalitis.

2026

Opinion article in Trends in Neurosciences

A conceptual framework proposing neuronal STAT1 as a phase switch from antiviral defence to synaptopathy.

2025

Acta Neuropathologica publication

Neuronal pSTAT1, resident memory CD8⁺ T cells and GPNMB⁺ phagocytes define T-cell-mediated autoimmune encephalitis.

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Vision

From neuroinflammation to neurodegeneration. Deciphering immune-mediated synaptopathy to protect neuronal circuits.

Understanding how immune responses reshape the brain today may reveal how to prevent permanent neurological injury tomorrow.

Build the encephalitisverse

For students, collaborators and clinicians interested in immune-mediated brain injury.

Research environment

Department of Basic Neuroscience, University of Geneva · Clinical and translational links with CHUV and collaborating neuropathology centres.

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Giovanni Di Liberto

Giovanni
Di Liberto

MD–PhD · PD-MERc · Neurologist and scientist

Giovanni Di Liberto investigates how immune responses reshape neuronal circuits during viral and autoimmune encephalitis. His work bridges clinical neurology, human neuropathology and experimental neuroimmunology to understand how neuroinflammation becomes neurodegeneration.