Shikhar Mehta1, Cameron C Young2, Matthew R Warren1, Sumayyah Akhtar3, Sandra J Shefelbine1,4, Justin D Crane5, Ambika G Bajpayee1,4. 1. Department of Bioengineering, Northeastern University, Boston, MA, USA. 2. Department of Chemical Engineering, Northeastern University, Boston, MA, USA. 3. Department of Biochemistry, Northeastern University, Boston, MA, USA. 4. Department of Mechanical & Industrial Engineering, Northeastern University, Boston, MA, USA. 5. Department of Biology, Northeastern University, Boston, MA, USA.
Abstract
OBJECTIVE: Advanced glycation end-product (AGE) accumulation is implicated in osteoarthritis (OA) pathogenesis in aging and diabetic populations. Here, we develop a representative nonenzymatic glycation-induced OA cartilage explant culture model and investigate the effectiveness of resveratrol, curcumin, and eugenol in inhibiting AGEs and the structural and biological hallmarks of cartilage degeneration. DESIGN: Bovine cartilage explants were treated with AGE-bovine serum albumin, threose, and ribose to determine the optimal conditions that induce physiological levels of AGEs while maintaining chondrocyte viability. AGE crosslinks, tissue stiffness, cell viability, metabolism and senescence, nitrite release and loss of glycosaminoglycans were assessed. Explants were cotreated with resveratrol, curcumin, or eugenol to evaluate their anti-AGE properties. Blind docking analysis was conducted to estimate binding energies of drugs with collagen II. RESULTS: Treatment with 100 mM ribose significantly increased AGE crosslink formation and tissue stiffness, resulting in reduced chondrocyte metabolism and enhanced senescence. Blind docking analysis revealed stronger binding energies of both resveratrol and curcumin than ribose, with glycation sites along a human collagen II fragment, indicating their increased likelihood of competitively inhibiting ribose activity. Resveratrol and curcumin, but not eugenol, successfully inhibited AGE crosslink formation and its associated downstream biological response. CONCLUSIONS: We establish a cartilage explant model of OA that recapitulates several aspects of aged human cartilage. We find that resveratrol and curcumin are effective anti-AGE therapeutics with the potential to decelerate age-related and diabetes-induced OA. This in vitro nonenzymatic glycation-induced model provides a tool for screening OA drugs, to simultaneously evaluate AGE-induced biological and mechanical changes.
OBJECTIVE: Advanced glycation end-product (AGE) accumulation is implicated in osteoarthritis (OA) pathogenesis in aging and diabetic populations. Here, we develop a representative nonenzymatic glycation-induced OA cartilage explant culture model and investigate the effectiveness of resveratrol, curcumin, and eugenol in inhibiting AGEs and the structural and biological hallmarks of cartilage degeneration. DESIGN: Bovine cartilage explants were treated with AGE-bovine serum albumin, threose, and ribose to determine the optimal conditions that induce physiological levels of AGEs while maintaining chondrocyte viability. AGE crosslinks, tissue stiffness, cell viability, metabolism and senescence, nitrite release and loss of glycosaminoglycans were assessed. Explants were cotreated with resveratrol, curcumin, or eugenol to evaluate their anti-AGE properties. Blind docking analysis was conducted to estimate binding energies of drugs with collagen II. RESULTS: Treatment with 100 mM ribose significantly increased AGE crosslink formation and tissue stiffness, resulting in reduced chondrocyte metabolism and enhanced senescence. Blind docking analysis revealed stronger binding energies of both resveratrol and curcumin than ribose, with glycation sites along a human collagen II fragment, indicating their increased likelihood of competitively inhibiting ribose activity. Resveratrol and curcumin, but not eugenol, successfully inhibited AGE crosslink formation and its associated downstream biological response. CONCLUSIONS: We establish a cartilage explant model of OA that recapitulates several aspects of aged human cartilage. We find that resveratrol and curcumin are effective anti-AGE therapeutics with the potential to decelerate age-related and diabetes-induced OA. This in vitro nonenzymatic glycation-induced model provides a tool for screening OA drugs, to simultaneously evaluate AGE-induced biological and mechanical changes.
Authors: Behdad Pouran; Vahid Arbabi; Ambika G Bajpayee; Jasper van Tiel; Juha Töyräs; Jukka S Jurvelin; Jos Malda; Amir A Zadpoor; Harrie Weinans Journal: J Biomech Date: 2018-06-22 Impact factor: 2.712
Authors: A J Grodzinsky; R M Porter; A G Bajpayee; R E De la Vega; M Scheu; N H Varady; I A Yannatos; L A Brown; Y Krishnan; T J Fitzsimons; P Bhattacharya; E H Frank Journal: Eur Cell Mater Date: 2017-12-05 Impact factor: 3.942
Authors: P A J M Vos; S C Mastbergen; A M Huisman; T N de Boer; J DeGroot; A A Polak; F P J G Lafeber Journal: Osteoarthritis Cartilage Date: 2011-12-21 Impact factor: 6.576