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Innate Immunity

The ability of immune cells - such as macrophages - to internalize particles by phagocytosis is central to the defense against pathogens.

Macrophages and dendritic cells of the innate immune response process antigens into structures that are recognized by T cells of the adaptive immune response. At M&I, this area of research involves many of us.

We use quantitative fluorometric and microscopic methods to delineate the mechanisms and regulation of phagocytosis.

Areas of Investigation

Within this field, we are studying several areas:

  • The mechanisms involved in antigen uptake and presentation to T cells, along with studies of how pathogens interfere with these processes
  • The innate immune responses to specific bacterial, viral, fungal and parasitic pathogens
  • Macrophages that can sense bacterial molecules within the cytosol, which triggers expression of various cytokines, and other pro-inflammatory genes. We are seeking to identify signaling molecules and transcriptional regulators that are specific to this cytosolic surveillance pathway, using the Gram-positive intracytosolic bacterium, Listeria monocytogenes as a model pathogen.
  • The effects of innate immunity on pathogenesis of Vaccinia virus and in particular the mechanisms through which interferons and toll-like receptor signaling pathways affect vaccinia viral replication and spread in the lung. We are focusing on understanding the cellular and molecular effectors involved in the initiation of immunity to model fungal pathogens such as Cryptococcus neoformans.

Faculty researching Innate Immunity

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Cheong-Hee Chang, PhD

Professor of Microbiology and Immunology
Medical School
Kathleen L. Collins

Kathleen Collins, MD, PhD

Professor of Internal Medicine
Professor of Microbiology and Immunology
Associate Dean for Physician Scientist Education and Training
Medical School
portrait of Katherine Gallagher

Katherine Gallagher, MD

Leland Ira Doan Research Professor of Vascular Surgery
Associate Chair, Department of Vascular Surgery Section
Professor of Surgery and Professor of Microbiology and Immunology
Medical School
headshot of Gary Huffnagle

Gary B Huffnagle, PhD

Nina and Jerry D Luptak Research Professor
Research Professor
Mary H Weiser Food Allergy Center
Professor of Internal Medicine
Professor of Microbiology and Immunology
Medical School and Professor of Molecular
Cellular and Developmental Biology
College of Literature, Science, and the Arts
Yasmina Laouar

Yasmina Laouar, PhD

Associate Professor of Microbiology and Immunology
Medical School
Bethany B. Moore

Bethany Moore, PhD

Nancy Walls Professor of Microbiology and Immunology
Chair, Department of Microbiology and Immunology
Professor of Microbiology and Immunology and Professor of Internal Medicine
Medical School
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Teresa O'Meara, PhD

Associate Professor of Microbiology and Immunology
Medical School
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Mary O'Riordan, PhD

Frederick C Neidhardt Collegiate Professor
Professor of Microbiology and Immunology
Medical School
MICHAL A OLSZEWSKI

Michal A Olszewski, DVM, PhD

Professor of Internal Medicine
Professor of Microbiology and Immunology
Associate Director Academic Program
Immunology Graduate Program
Medical School
Malini Raghavan

Malini Raghavan, PhD

Nancy Walls Research Professor of Microbiology and Immunology
Professor of Microbiology and Immunology, Medical School
swanson-joel

Joel Swanson, PhD

Professor Emeritus of Microbiology and Immunology
Medical School
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Yifan Wang, DVM, PhD

Assistant Professor of Microbiology and Immunology
Medical School