Boris Reizis

Boris Reizis, PhD

Professor, Department of Pathology

Professor, Department of Medicine

immunology, stem cell biology, autoimmunity

Major areas of research in my lab include stem cells in normal hematopoiesis and leukemia, dendritic cell development and function, and mechanisms of autoimmunity.

Stem Cells in Normal Hematopoiesis and Leukemia

Stem cells can both differentiate into various cell types and maintain their own population of undifferentiated cells. Thus, a single hematopoietic stem cell (HSC) can regenerate the entire blood system in irradiated recipients, enabling a potentially life-saving bone marrow transplantation. However, controversies remain on the role and properties of HSCs during normal blood production—hematopoiesis—in unirradiated organisms.

We have developed genetic tools to identify and trace HSCs, and we have shown that these cells are indeed a major source of adult hematopoiesis. Our current studies focus on the mechanisms of HSC differentiation in normal conditions and their subversion in leukemia.

Dendritic Cell Development and Function

Dendritic cells (DCs) detect, capture, and present invading pathogens to lymphocytes, thus representing a critical link between innate and adaptive immunity. DCs encompass several lineages dedicated to distinct pathogens and immune response types, including the antigen-presenting classical DCs (cDCs) and interferon-producing plasmacytoid DCs (pDCs).

Our studies have identified several transcription factors and signaling pathways that control the development and specification of DCs. Our current studies focus on the molecular control of DC function in the steady state and during immune responses.

Mechanisms of Autoimmunity

Aberrant recognition and attack of the body by its own immune system causes autoimmune diseases such as type 1 diabetes, multiple sclerosis, and systemic lupus erythematosus (SLE). We are studying the mechanisms of autoimmunity by focusing on SLE, in which the immune system targets self-DNA and self-RNA. We have characterized a unique nuclease, DNASE1L3, as an essential mechanism of tolerance to self-DNA, the loss of which causes SLE-like autoimmune responses towards self-DNA. We are exploring the mechanism of DNASE1L3 activity and its potential as a therapeutic tool.



Academic office

550 First Avenue, Medical Science Building

Fifth Floor, Room 594

New York, NY 10032

Lab Website
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Professor, Department of Pathology

Professor, Department of Medicine

Co-Director, Judith and Stewart Colten Center for Autoimmunity

PhD from Weizmann Institute of Science

Lau, Colleen M; Tiniakou, Ioanna; Perez, Oriana A; Kirkling, Margaret E; Yap, George S; Hock, Hanno; Reizis, Boris

Journal of experimental medicine. 2018 Sep 03; 215(9):2265-2278

Smith-Raska, Matthew R; Arenzana, Teresita L; D'Cruz, Louise M; Khodadadi-Jamayran, Alireza; Tsirigos, Aristotelis; Goldrath, Ananda W; Reizis, Boris

Frontiers in immunology. 2018 Jul 04; 9:1482-1482

Kirkling, Margaret E; Cytlak, Urszula; Lau, Colleen M; Lewis, Kanako L; Resteu, Anastasia; Khodadadi-Jamayran, Alireza; Siebel, Christian W; Salmon, Hélène; Merad, Miriam; Tsirigos, Aristotelis; Collin, Matthew; Bigley, Venetia; Reizis, Boris

Cell reports. 2018 Jun 19; 23(12):3658-33672.e6

Upadhaya, Samik; Reizis, Boris; Sawai, Catherine M

Experimental hematology. 2018 May 05; 61:26-35

Notch signaling facilitates in vitro generation of human IRF8-dependent CLEC9A+classical dendritic cells [Meeting Abstract]

Cytlak, U.; Resteu, A.; Kirkling, M. E.; Milne, P.; Reizis, B.; Collin, M.; Bigley, V

European journal of immunology. 2018 MAY; 48:164-164

Kratchmarov, Radomir; Viragova, Sara; Kim, Min Jung; Rothman, Nyanza J; Liu, Kang; Reizis, Boris; Reiner, Steven L

Immunology & cell biology. 2018 Mar 23;

Notch Signaling Facilitates In Vitro Generation of Cross-Presenting Classical Dendritic Cells

Kirkling, M E; Cytlak, U; Lau, C M; Lewis, K L; Resteu, A; Khodadadi-Jamayran, A; Siebel, C W; Salmon, H; Merad, M; Tsirigos, A; Collin, M; Bigley, V; Reizis, B

Cell reports. 2018; (),(2018):

Granot, Tomer; Senda, Takashi; Carpenter, Dustin J; Matsuoka, Nobuhide; Weiner, Joshua; Gordon, Claire L; Miron, Michelle; Kumar, Brahma V; Griesemer, Adam; Ho, Siu-Hong; Lerner, Harvey; Thome, Joseph J C; Connors, Thomas; Reizis, Boris; Farber, Donna L

Immunity. 2017 Mar 21; 46(3):504-515

Building New Bridges to Overcome Autoimmunity

NIH Grant Drives New Research in Lupus Risk Factors & Flares