Tim Griffin, PhD
- Research Program: Geroscience
- Position: Associate Member, Biochemistry and Molecular Biology, Physiology
Biography
"Our laboratory investigates how biomechanical and metabolic signals influence synovial joint health and the pathophysiology of osteoarthritis (OA). We utilize a multi-disciplinary approach that spans from the whole animal (e.g., to evaluate changes in OA pain and limb function) to the sub-cellular level (e.g., changes in mitochondrial function and post-translational protein modifications). We develop and test new experimental methods and pre-clinical animal models to enhance the translational relevance of our work, which involves two major areas of inquiry: 1) to understand how aging and obesity increase the development of OA, focusing on sex-specific changes in cartilage metabolism and cellular resilience, and 2) to determine how exercise protects against OA pain and disability, focusing on intra-articular adipose tissue lipolysis, macrophage immuno-metabolic regulation, and chondrocyte epigenetic reprogramming. Our long-term goal is to develop new therapeutic approaches for treating OA pain and slowing the progression of the disease."
Publications
- Graduate School
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Orthopaedics and Bioengineering
Duke University
Durham, NC -
Integrative Biology
University of California Berkeley
Berkeley, CA
- Undergraduate School
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Anthropology
Harvard University
Cambridge, MA
- Osteoarthritis
- Metabolism
- Mechanobiology
- Inflammation
- Aging and Resilience
- Exercise Physiology
- Glutathione as a mediator of cartilage oxidative stress resistance and resilience during aging and osteoarthritis 2020
- GC-MS Method for Metabolic Profiling of Mouse Femoral Head Articular Cartilage Reveals Distinct Effects of Tissue Culture and Development 2019
- Independent effects of dietary fat and sucrose content on chondrocyte metabolism and osteoarthritis pathology in mice 2018
- Pro-fibrotic infrapatellar fat pad remodeling without M1-macrophage polarization precedes knee osteoarthritis in diet-induced obese mice 2017
- Aging promotes SIRT3-dependent cartilage SOD2 acetylation and osteoarthritis 2016
- Mitochondrial respiration and redox coupling in articular chondrocytes 2015
