T-cell checkpoint biology
We dissect PD-1 and LAG-3 receptor organization, ligand-dependent suppression, and proximity to the TCR, and use these principles to engineer selective T-cell modulation.
PD-1 · LAG-3 · BiTSWe investigate immune checkpoint and immune feedback receptor–ligand biology within disease microenvironments and translate mechanistic discoveries into next-generation therapies for cancer, autoimmune disease, and beyond.
We study how negative-feedback receptor–ligand pathways maintain immune balance, how these circuits are rewired in disease, and how they can be engineered into more precise immunotherapies.
We dissect PD-1 and LAG-3 receptor organization, ligand-dependent suppression, and proximity to the TCR, and use these principles to engineer selective T-cell modulation.
PD-1 · LAG-3 · BiTSOur discovery of FGL1 as the first inhibitory ligand for TACI reveals a new layer of extracellular regulation of B-cell and humoral immune responses.
FGL1 · TACI · humoral immunityWe investigate tumor-associated pathways that impair antigen presentation and suppress antitumor immunity, including Siglec-15 and the SUSD6/TMEM127/WWP2 axis.
MHC-I · Siglec-15 · immune evasionWe study key myeloid receptor pathways that shape inflammation and host defense, including SARS-CoV-2-induced myeloid activation.
Myeloid biology · viral immunopathogenesisOur work spans receptor–ligand discovery, mechanistic immunology, and therapeutic engineering.
Discovery of Siglec-15 as a PD-L1-orthogonal immune suppressor and therapeutic target.
NATURE MEDICINE · 2019Identification of FGL1 as a major inhibitory ligand for LAG-3 and a new mechanism of checkpoint regulation.
CELL · 2019Discovery of a membrane-associated pathway controlling MHC-I degradation and cancer immune evasion.
CELL · 2023Structural and membrane-level mechanisms that explain how checkpoint receptors organize and suppress T-cell activity.
SCIENCE IMMUNOLOGY / PNAS · 2024Proximity between LAG-3 and the TCR guides selective suppression of pathogenic T cells and a new strategy for autoimmunity.
CELL · 2025FGL1 acts as the first inhibitory ligand for TACI, connecting FGL1 biology to B-cell immune regulation.
IMMUNITY · 2026Our central idea is that effective immunotherapy depends on understanding feedback circuits in context: where they operate, when they are induced, which cells they connect, and how strongly they regulate immunity.
By decoding and engineering these pathways, we aim to achieve more precise immune modulation while preserving protective immunity.

Associate Professor, NYU Grossman School of Medicine
Member, Laura and Isaac Perlmutter Cancer Center
Jun Wang's research has focused on cancer immunotherapy and immune regulation for two decades. His early work investigated 4-1BB (CD137) immunotherapy and mechanisms of immune-related liver toxicity, including myeloid-associated pathways that could mitigate toxicity while preserving antitumor immunity. His subsequent work contributed to the discovery of Siglec-15 as an immune checkpoint, FGL1 as a functional ligand for LAG-3, mechanisms of PD-1 and LAG-3 regulation, a membrane inhibitory axis controlling MHC-I antigen presentation, and FGL1/TACI-mediated B-cell regulation.
The lab integrates fundamental receptor–ligand discovery, mechanistic immunology, protein engineering, and translational development to create new immunotherapies for cancer and autoimmune diseases.
A continuing progression from discovery of new immune pathways to mechanistic understanding and therapeutic design.
PD-L1-orthogonal immune suppressor
New inhibitory ligand–receptor pathway
SARS-CoV-2 inflammatory mechanisms
Membrane control of antigen presentation
Selective pathogenic T-cell suppression
Inhibitory B-cell regulation
For the complete publication list, visit the current Wang Lab publication page or NYU faculty profile.
Selected federal, foundation and institutional support for our research in immune checkpoint biology, receptor–ligand discovery and translational immunotherapy.
Mechanistic and translational studies of the FGL1–LAG-3 immune checkpoint pathway.
2022–2029Defining Siglec-15 biology and therapeutic opportunities in tumor immunity.
2023–2028Computational and experimental strategies for antigen-specific antibody discovery.
2025–2030Functional characterization of myeloid receptors involved in SARS-CoV-2 immunopathogenesis.
2021–2023Discovery and validation of membrane regulators of antigen presentation and tumor immune evasion.
2021–2023Support for innovative checkpoint and tumor-immune biology in melanoma.
2022–2025Early-career support for innovative cancer immunology and immunotherapy research.
2021–2023Translational support for LAG-3-based T-cell silencing strategies in autoimmune disease.
2022–present program developmentPrevious lab roles and current positions are shown where available.
We welcome postdoctoral scientists, graduate students, and research scientists passionate about immunology, receptor–ligand biology, protein engineering, and translational immunotherapy. Inquiries from motivated individuals at all career stages are encouraged.