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Development of Immune Tolerance

Award Number: R01AI124512
ORGANIZATION: NATIONAL INSTITUTE OF ALLERGY & INFECTIOUS DISEASES
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 03/15/2016
PERIOD OF PERFORMANCE END DATE: 02/28/2026

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Development of Immune Tolerance - PROJECT SUMMARY Programming of self-antigen specific CD4+ Tregs in the thymus is essential for suppression of aberrant immune responses and prevention of autoimmunity. Tregs also control inflammation during viral infection and following pathogen clearance. This is particularly relevant for some types of viral infections such as the 1918 influenza pandemic strain, and more recently, specific strains of coronaviruses, where the immune response itself can be pathogenic. In addition to viral infections, high levels of type I IFN are a defining feature of some autoimmune diseases, such as SLE or Sjögren’s syndrome; Tregs reduce the symptoms of such autoimmune diseases as well. However, we know relatively little about the Tregs involved in either of the above processes. For example, what types of Tregs are involved in these responses? Do Tregs that dampen anti-viral immune responses or suppress SLE-like disease develop in the thymus? If so, what is the thymic niche that controls differentiation of this Treg subset? What APCs/stromal cells are required for differentiation of this Treg subset? What specific functional roles does this Treg subset play during viral infections or SLE? Our preliminary data demonstrate that a unique subset of Tregs develops in the thymus characterized by a strong interferon-stimulated gene-signature (ISG-Tregs). We propose that this ISG-Treg subset plays a key role in governing antiviral immune responses and suppressing immune responses to autoimmune diseases characterized by high levels of IFN. We will explore this hypothesis in two specific aims. In aim 1, we will determine how IFN signaling in the thymus affects thymic selection and the development of ISG-Tregs. In aim 2, we will determine the functions of ISG-Tregs in response to viral infections and systemic lupus erythematosis. Successful completion of these aims will allow us to identify the mechanism by which ISG- Tregs arise in the thymus, and determine the role of ISG-Tregs in immune responses to viruses, and in autoimmune diseases associated with high levels of IFN, such as SLE or Sjögren’s syndrome.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $427,251 )
2025	2025	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	10	2/13/2025	NON-COMPETING CONTINUATION	$427,251
														Subtotal = $427,251

Issue Date FY: 2024 ( Subtotal = $447,130 )
2024	2024	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	9	2/27/2024	NON-COMPETING CONTINUATION	$402,416
2024	2024	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	001	9	5/28/2024	NON-COMPETING CONTINUATION	$44,714
														Subtotal = $447,130

Issue Date FY: 2023 ( Subtotal = $453,657 )
2023	2023	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	8	2/21/2023	NON-COMPETING CONTINUATION	$453,657
														Subtotal = $453,657

Issue Date FY: 2022 ( Subtotal = $824,711 )
2022	2022	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	7	2/15/2022	NON-COMPETING CONTINUATION	$460,057
2022	2022	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	001	7	7/20/2022	SUPPLEMENT FOR EXPANSION	$364,654
														Subtotal = $824,711

Issue Date FY: 2021 ( Subtotal = $460,605 )
2021	2021	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	6	2/2/2021	COMPETING CONTINUATION	$460,605
2021	2020	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	001	5	9/28/2021	NON-COMPETING CONTINUATION	$0
														Subtotal = $460,605

Issue Date FY: 2020 ( Subtotal = $385,000 )
2020	2020	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	5	2/14/2020	NON-COMPETING CONTINUATION	$385,000
														Subtotal = $385,000

Issue Date FY: 2019 ( Subtotal = $385,000 )
2019	2019	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	4	2/22/2019	NON-COMPETING CONTINUATION	$385,000
														Subtotal = $385,000

Issue Date FY: 2018 ( Subtotal = $384,234 )
2018	2018	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE # 224	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	3	1/25/2018	NON-COMPETING CONTINUATION	$384,234
														Subtotal = $384,234

Issue Date FY: 2017 ( Subtotal = $381,933 )
2017	2017	REGENTS OF THE UNIVERSITY OF MINNESOTA	200 OAK ST SE	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	2	2/16/2017	NON-COMPETING CONTINUATION	$381,933
														Subtotal = $381,933

Issue Date FY: 2016 ( Subtotal = $393,200 )
2016	2016	UNIVERSITY OF MINNESOTA, OFFICE OF STUDENT FINANCE AID	106 PLEASANT SE, 210 FRASER HL	MINNEAPOLIS	MN	55455	HENNEPIN	USA	Allergy and Infectious Diseases Research	000	1	3/7/2016	NEW	$393,200
														Subtotal = $393,200

Grand Total All Awards = $4,542,721

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Development of Immune Tolerance

Award Number: R01AI124512

ORGANIZATION: NATIONAL INSTITUTE OF ALLERGY & INFECTIOUS DISEASES

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

PERIOD OF PERFORMANCE START DATE: 03/15/2016

PERIOD OF PERFORMANCE END DATE: 02/28/2026

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