Ragon Institute

Sokol Lab

Neuroimmune Interactions in Allergic Responses

Lab Overview

The Sokol Lab investigates how the nervous and immune systems cooperate to control barrier tissue inflammation. Our focus is allergic disease — tracing neuroimmune interactions from first allergen encounter to chronic sensitization. At the center of our work is a fundamental reframing: sensory neurons at barrier tissues are not passive bystanders in allergic disease, but active regulators that both initiate and shape immune responses. These neurons directly sense allergen protease activity and signal to immune cells to trigger type 2 inflammation. The immune system, in turn, tunes neuronal sensitivity — creating feedback circuits that determine whether allergen exposure leads to lasting sensitization. Neurons themselves can also be reprogrammed by allergen exposure through metabolic changes that lower the threshold for future immune activation, a form or neuroimmune “training” that may explain why allergic disease tends to worsen with time. To dissect these pathways, we combine mouse genetics, CRISPR-based functional genomics in primary sensory neurons, single-cell approaches, and translational studies in human tissue. Our goal is to define the molecular logic of neuroimmune communication, and to identify new strategies to prevent and treat allergic disease, chronic itch, and inflammatory disorders.

Caroline Sokol, MD, PhD

Affiliation

  • Member, Ragon Institute of Mass General Brigham, MIT, and Harvard
  • Core Member, Gene Lay Institute of Immunology and Inflammation
  • Assistant Professor, Harvard Medical School
  • Assistant Physician, Division of Allergy and Clinical Immunology, Mass General Brigham

About

Dr. Sokol received her MD and PhD from Yale University School of Medicine, where she performed her doctoral research in the laboratory of Dr. Ruslan Medzhitov. There she conducted foundational studies showing that allergens are detected by the immune system through their protease activity — a form of functional recognition distinct from classical innate immune signals. She completed her clinical training in Internal Medicine and Allergy & Immunology at Massachusetts General Hospital, followed by a research fellowship with Dr. Andrew Luster, where she identified novel chemokine pathways controlling dendritic cell migration in response to allergens. Dr. Sokol joined the MGH faculty in 2018, where she shifted her research focus to the role of the nervous system in allergic immunity, establishing sensory neurons as the upstream regulators of allergic immune responses. She joined the Ragon Institute in 2026.

Recognition & Honors

  • Chair, Gordon Research Conference on Food Allergy (2026)
  • Martin Prize for Fundamental Research, MGH (2025)
  • Howard Goodman Fellowship, MGH (2021)
  • ASI Social Impact Award, Australian and New Zealand Society for Immunology (2021)
  • Broad Institute Next Generation Scholar (2020)
  • Fellow, American Academy of Allergy, Asthma, and Immunology (FAAAAI) (2019)

Related Research Foci

  • Fundamental Immunology
  • Mucosal Immunology
  • Environmental Drivers of Health

Related Areas of Study

  • Allergy
  • Neuroimmune
  • Autoimmune

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Latest From The Lab

Selected Publications

Sensory neuronal mTORC1 kinase signaling establishes neuroimmune memory that initiates allergic immunity

Zhu, X., Yang, H., Zhan, H., Kernin, I. J., Buttaci, D. R., Le, N., Han, C., Naik, P. R., Matatia, P. R., Zaghouani, S., Delacruz, L. R., Altenburger, L. M., Smith, N. P., Wu, E., Londoner, R., Flayer, C. H., Sun, Z., Ringel, A. E., Villani, A. C., Rahimi, R. A., … Sokol, C. L.

Immunity, S1074-7613(26)00349-3.

September 22, 2026

Identifying microbial protease allergens through protein language model-guided homology

Thurimella, K., Wu, E., Li, C., Graham, D. B., Owens, R. M., Plichta, D. R., Sokol, C. L., Xavier, R. J., & Bacallado, S.

Cell Systems, 17(3), 101510.

February 20, 2026

A γδ T cell–IL-3 axis controls allergic responses through sensory neurons

Flayer, C. H., Kernin, I. J., Matatia, P. R., Zeng, X., Yarmolinsky, D. A., Han, C., Naik, P. R., Buttaci, D. R., Aderhold, P. A., Camire, R. B., Zhu, X., Tirard, A. J., McGuire, J. T., Smith, N. P., McKimmie, C. S., McAlpine, C. S., Swirski, F. K., Woolf, C. J., Villani, A. C., & Sokol, C. L.

Nature, 634(8033), 440–446.

September 4, 2024

Substance P Release by Sensory Neurons Triggers Dendritic Cell Migration and Initiates the Type-2 Immune Response to Allergens

Perner, C., Flayer, C. H., Zhu, X., Aderhold, P. A., Dewan, Z. N. A., Voisin, T., Camire, R. B., Chow, O. A., Chiu, I. M., & Sokol, C. L.

Immunity, 53(5), 1063–1077.e7

October 23, 2020

Lab Members

Xueping Zhu, PhD

Postdoctoral Fellow

Cai Han, PhD

Postdoctoral Fellow

Keith Conrad Fernandez, PhD

Postdoctoral Fellow

Alice Lu-Culligan, MD, PhD

Postdoctoral Fellow

Peri Matatia

Harvard Immunology PhD Student

Sarah Zaghouani

Harvard Biological and Biomedical Sciences PhD Student

Alyssa DuBois

Harvard Biological and Biomedical Sciences PhD Student

Ryan Levitan

Research Technician

Joy Velazquez

Research Technician

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