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Shi B, Amin A, Dalvi P, Wang W, Lukacs N, Kai L, Cheresh P, Peclat TR, Chini CC, Chini EN, van Schooten W, Varga J. Heavy-chain antibody targeting of CD38 NAD + hydrolase ectoenzyme to prevent fibrosis in multiple organs. Sci Rep 2023; 13:22085. [PMID: 38086958 PMCID: PMC10716202 DOI: 10.1038/s41598-023-49450-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/08/2023] [Indexed: 12/18/2023] Open
Abstract
The functionally pleiotropic ectoenzyme CD38 is a glycohydrolase widely expressed on immune and non-hematopoietic cells. By converting NAD+ to ADP-ribose and nicotinamide, CD38 governs organismal NAD+ homeostasis and the activity of NAD+-dependent cellular enzymes. CD38 has emerged as a major driver of age-related NAD+ decline underlying adverse metabolic states, frailty and reduced health span. CD38 is upregulated in systemic sclerosis (SSc), a chronic disease characterized by fibrosis in multiple organs. We sought to test the hypothesis that inhibition of the CD38 ecto-enzymatic activity using a heavy-chain monoclonal antibody Ab68 will, via augmenting organismal NAD+, prevent fibrosis in a mouse model of SSc characterized by NAD+ depletion. Here we show that treatment of mice with a non-cytotoxic heavy-chain antibody that selectively inhibits CD38 ectoenzyme resulted in NAD+ boosting that was associated with significant protection from fibrosis in multiple organs. These findings suggest that targeted inhibition of CD38 ecto-enzymatic activity could be a potential pharmacological approach for SSc fibrosis treatment.
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Affiliation(s)
- Bo Shi
- Northwestern Scleroderma Program, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Asif Amin
- Department of Internal Medicine, The University of Michigan, Ann Arbor, MI, 48109, USA
| | | | - Wenxia Wang
- Northwestern Scleroderma Program, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Nicholas Lukacs
- Department of Pathology, The University of Michigan, Ann Arbor, MI, 48109, USA
| | - Li Kai
- Northwestern Scleroderma Program, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Paul Cheresh
- Division of Pulmonary and Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Thais R Peclat
- Department of Anesthesiology and Kogod Center on Aging, Mayo Clinic, Jacksonville, FL, USA
| | - Claudia C Chini
- Department of Anesthesiology and Kogod Center on Aging, Mayo Clinic, Jacksonville, FL, USA
| | - Eduardo N Chini
- Department of Anesthesiology and Kogod Center on Aging, Mayo Clinic, Jacksonville, FL, USA
| | | | - John Varga
- Department of Internal Medicine, The University of Michigan, Ann Arbor, MI, 48109, USA.
- Michigan Scleroderma Program, The University of Michigan, Ann Arbor, MI, 48104, USA.
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