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Updated: Jul 10, 2026
A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders
Published on: June 8, 2014
Roles of circulating proteins in osteoporosis pathogenesis: Insights from Mendelian randomization
Zhengchao Zhang1, Jiayu He2, Xueyan Lin3
1Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou, 350001, Fujian, China; Department of Emergency Trauma Surgery, Fujian Provincial Hospital, Fuzhou, 350001, Fujian, China; Fujian Trauma Medicine Center, Fuzhou, 350001, Fujian, China; Fujian Key Laboratory of Emergency Medicine, Fuzhou, 350001, Fujian, China.
This study identifies circulating proteins causally linked to osteoporosis (OP). LRP4 is highlighted as a top drug target, with TNFSF11 also showing promise for future OP treatments.
Area of Science:
- Genetics and Molecular Biology
- Pharmacology and Drug Discovery
Background:
- Osteoporosis (OP) is a major health concern with circulating proteins as potential drug targets.
- Previous studies lacked robust evidence due to limited data and validation.
Purpose of the Study:
- To identify and prioritize circulating proteins causally linked to OP.
- Utilize a proteome-wide Mendelian randomization (MR) framework with multi-layered validation.
Main Methods:
- Performed proteome-wide MR using cis-pQTLs from five large datasets.
- Validated associations with bone mineral density (BMD) traits in independent case-control studies.
- Applied Bayesian colocalization, SMR, and HEIDI tests, followed by single-cell expression mapping.
Main Results:
- Seven circulating proteins showed significant MR associations with BMD.
- LRP4 identified as a high-confidence target, TNFSF11 and IBSP as moderate-confidence.
- Single-cell analysis revealed enriched expression of TNFSF11, LRP4, and IBSP in bone marrow stem cells.
Conclusions:
- This study rigorously prioritized circulating proteins causally implicated in OP.
- LRP4 is the strongest candidate, with TNFSF11 as a moderately supported target.
- Findings provide prioritized targets for osteoporosis drug development and validation.
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