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Gharpure M, Vyavahare S, Ahluwalia P, Gupta SK, Lee TJ, Lohakare J, Kolhe R, Lei Y, Deak F, Lu XY, Isales CM, Fulzele S. Alterations in Alzheimer's disease microglia transcriptome might be involved in bone pathophysiology. Neurobiol Dis 2024; 191:106404. [PMID: 38184014 DOI: 10.1016/j.nbd.2024.106404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024] Open
Abstract
Aging is a major risk factor for multiple chronic disorders in the elderly population, including Alzheimer's disease (AD) and Osteoporosis. AD is a progressive neurodegenerative disease characterized by memory loss. In addition to dementia, several studies have shown that AD patients experience an increased rate of musculoskeletal co-morbidities, such as osteoporosis. Since tissue-specific macrophages contribute to both diseases, this study analyzed the microglia transcriptome of AD mice to determine a common gene signature involved in osteoclast biology. After comparing differentially regulated genes from GEO data sets (GSE93824 and GSE212277), there were 35 common upregulated genes and 89 common downregulated genes. Of these common genes, seven genes are known to play an important role in bone homeostasis. CSF1, SPP1, FAM20C, and Cst7 were upregulated and are associated with osteoclastogenesis and inflammation. Among the downregulated genes, LILRA6, MMP9, and COL18A1 are involved in bone formation and osteoclast regulation. We further validated some of these genes (CSF1, Cst7, and SPP1) in the cortex and the bone of AD mice models. The dysregulation of these microglial genes in AD might provide insights into the co-occurrence of AD and osteoporosis and offer potential therapeutic targets to combat disease progression.
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Affiliation(s)
- Mohini Gharpure
- Department of Medicine, Augusta University, Augusta, GA, USA
| | - Sagar Vyavahare
- Department of Medicine, Augusta University, Augusta, GA, USA
| | - Pankaj Ahluwalia
- Department of Pathology, Augusta University, Augusta, GA 30912, USA
| | | | - Tae Jin Lee
- Division of Biostatistics and Data Science, Augusta University, Augusta, GA, USA
| | - Jayant Lohakare
- College of Agriculture, Food, and Natural Resources, Prairie View A&M University, Prairie View, TX 77446, USA
| | - Ravindra Kolhe
- Department of Pathology, Augusta University, Augusta, GA 30912, USA
| | - Yun Lei
- Department of Neuroscience & Regenerative Medicine, Augusta, GA 30912, USA
| | - Ferenc Deak
- Department of Neuroscience & Regenerative Medicine, Augusta, GA 30912, USA
| | - Xin-Yun Lu
- Department of Neuroscience & Regenerative Medicine, Augusta, GA 30912, USA
| | - Carlos M Isales
- Department of Medicine, Augusta University, Augusta, GA, USA; Center for Healthy Aging, Augusta University, Augusta, GA, USA
| | - Sadanand Fulzele
- Department of Medicine, Augusta University, Augusta, GA, USA; Center for Healthy Aging, Augusta University, Augusta, GA, USA; Department of Cell Biology and Anatomy, Augusta University, Augusta, GA, USA.
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