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Sarm1 and neural regulation of bone

Award Number: R01DK132073
ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)
PERIOD OF PERFORMANCE START DATE: 01/13/2023
PERIOD OF PERFORMANCE END DATE: 11/30/2026

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Sarm1 and neural regulation of bone - ABSTRACT Sarm1 (sterile α and TIR motif-containing protein-1) is a NADase enzyme that is highly expressed in the nervous system. The Sarm1 enzyme serves as a metabolic biosensor and is activated in response to injury, inflammation, and oxidative stress. Based on a screen of thousands of candidates in 2013, Sarm1 was identified as the central executioner of nerve axon degeneration. Since this time, Sarm1 has also been shown to modulate nerve function through regulation of MAPK signaling and metabolite turnover. In response to this pivotal discovery, Sarm1 inhibitors are now being developed for clinical management of neurodegenerative disease. Specific to bone - nerve damage, dysfunction and clinical neuropathy have all been related to fracture risk and impaired bone health in diverse conditions including spinal cord injury, anorexia, chemotherapy, multiple sclerosis and diabetes. However, the molecular mechanisms underlying these relationships remain unclear, limiting our options for therapeutic intervention. Recently, we discovered that knockout of Sarm1 prevents bone fragility in diabetic mice. Our central hypothesis is that neural Sarm1 activation restricts bone formation, leading to decreased bone mass and strength. Conversely, we hypothesize that targeted Sarm1 inhibition can be used to simultaneously promote bone and nerve health in states of chronic Sarm1 activation, such as diabetes. To test this hypothesis, we will pursue two specific aims. First, we will isolate the role of Sarm1-dependent neuropathy in the progression of skeletal disease. Second, we will target the function of Sarm1 to restore bone health in vivo. When complete, this work will define the mechanisms linking nerve damage to impaired bone health through Sarm1. We will also determine if Sarm1 inhibition is a strategy that can be used to support bone formation in settings of skeletal disease. Our long-term goal is to promote lifelong health and healthy aging by developing strategies to prevent or to reverse nerve and bone damage across diverse disease states, beginning in childhood and adolescence and continuing throughout the lifespan.


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: 2026 ( Subtotal = $425,280 )
2026	2026	WASHINGTON UNIVERSITY, THE	1 BROOKINGS DR	SAINT LOUIS	MO	63130	SAINT LOUIS	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	4	12/4/2025	NON-COMPETING CONTINUATION	$425,280
														Subtotal = $425,280

Issue Date FY: 2025 ( Subtotal = $382,753 )
2025	2025	WASHINGTON UNIVERSITY, THE	1 BROOKINGS DR	SAINT LOUIS	MO	63130	SAINT LOUIS	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	3	11/15/2024	NON-COMPETING CONTINUATION	$382,753
														Subtotal = $382,753

Issue Date FY: 2024 ( Subtotal = $408,268 )
2024	2024	WASHINGTON UNIVERSITY, THE	ONE BROOKINGS DR	SAINT LOUIS	MO	63110	SAINT LOUIS CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	001	2	5/7/2024	NON-COMPETING CONTINUATION	$25,515
2024	2024	WASHINGTON UNIVERSITY, THE	ONE BROOKINGS DR	SAINT LOUIS	MO	63110	SAINT LOUIS CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	2	11/15/2023	NON-COMPETING CONTINUATION	$382,753
														Subtotal = $408,268

Issue Date FY: 2023 ( Subtotal = $429,838 )
2023	2023	WASHINGTON UNIVERSITY, THE	ONE BROOKINGS DR	SAINT LOUIS	MO	63130	SAINT LOUIS	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	1	1/12/2023	NEW	$429,838
														Subtotal = $429,838

Grand Total All Awards = $1,646,139

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Sarm1 and neural regulation of bone

Award Number: R01DK132073

ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

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

PERIOD OF PERFORMANCE START DATE: 01/13/2023

PERIOD OF PERFORMANCE END DATE: 11/30/2026

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