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Deborah J. Fowell, Ph.D.

Contact Information

Phone Numbers

Administrative: (585) 273-1400

Office: (585) 273-3680

Fax: (585) 273-2452

Research Labs

Program for Advanced Immune Bioimaging

Visit Program for Advanced Immune Bioimaging Lab Website



Regulation of Immunity at Tissue Sites of Infection and Autoimmunity

The acquisition and execution of CD4 effector function are tightly regulated and spatially compartmentalized. In the lymph node (LN), naïve CD4+ T cells acquire specialized functions by means of expression of distinct cytokines and acquire distinct homing properties. Therefore both the function and subsequent localization of effector cells appears to be pre-determined during differentiation in the LN. However, once CD4 effectors leave the lymph node their physical and functional fate is less well understood. The location and inflammatory context in which effector T cells are reactivated at the infection site are likely to determine the success of a given immune response. Our research focuses on mechanisms of immune regulation at tissue sites of inflammation.

Our studies with the protozoa Leishmania major suggest that this centrally (LN) generated effector repertoire can be further edited at the infected tissue site. Cytokine production in the inflamed tissue can be modulated at a number of levels including chemokine-driven differential recruitment of effector cells, the provision of signals for effector cell function and suppression by regulatory T cells (Tregs). The concept that tissue resident pathogens may subvert the centrally generated cytokine repertoire has important therapeutic implications. Novel therapies that focus on manipulating the local infection site to encourage appropriate recruitment or activation of effectors may be particularly beneficial.

Regulatory T cells play important immuno-modulatory roles at sites of inflammation in both infection and autoimmunity. Nonetheless, their mode of suppression remains controversial and is likely to be context dependent and modified by the inflammatory milieu. We focus on the molecular consequences of Treg encounter for the CD4+ T cells and have identified important points of control for early IL-2 production and for Th differentiation and effector function. Regulatory T cells can readily be found at sites of inflammation in infectious and autoimmune settings. It is clear that their activity also needs to be regulated in order to enable protective immunity to proceed but that these mechanisms of control may exacerbate autoimmune pathology. We are interested in the functional fate of Tregs at sites of inflammation, particularly in the context of autoimmune diabetes.



BS | Bristol University, UK
Cellular Pathology

PhD | Oxford University, UK

Post-doctoral Training & Residency

1994 - 1998
UCSF, San Francisco, CA. Infectious Disease Division (Mentor: Richard Locksley)

1992 - 1994
Oxford University, UK. (Mentor: Don Mason)


Deans Professorship
Sponsor: URMC

Basic Science Mentoring Award
Location: URMC

Graduate Student Society Faculty Award
Location: University of Rochester Medical School

Mary Jane Kugel Award
Sponsor: Juvenile Diabetes Research Foundation

2006 - 2007
Discovery Concept Fund
Sponsor: Johnson and Johnson

2000 - 2004
HHMI Junior Faculty Start-up Award
Sponsor: Hughes
Location: University of Rochester

Pew Scholars Nominee
Location: University of Rochester

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Journal Articles

Kim D, An L, Moon J, Maymi VI, McGurk AI, Rudd BD, Fowell D, White AC. "Ccr2+ monocyte-derived macrophages influence trajectories of acquired therapy resistance in Braf-mutant melanoma." Cancer research.. 2023 May 17; Epub 2023 May 17.

Herman KE, Yoshida T, Hughson A, Grier A, Gill SR, Beck LA, Fowell DJ. "IL-17-Dependent Dysregulated Cutaneous Immune Homeostasis in the Absence of the Wiskott-Aldrich Syndrome Protein." Frontiers in immunology.. 2022 13:817427. Epub 2022 Feb 21.

Bala N, McGurk AI, Zilch T, Rup AN, Carter EM, Leddon SA, Fowell DJ. "T cell activation niches-Optimizing T cell effector function in inflamed and infected tissues." Immunological reviews.. 2021 Dec 2; Epub 2021 Dec 02.

Books & Chapters

Chapter Title: The Th1/Th2 Paradigm in infections
Book Title: Immunology of Infectious Disease
Author List: Mosmann, T. & Fowell, DJ
Edited By: Kaufmann, Sher & Ahmed
Published By: ASM press 2001