Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (49): 7895-7901.doi: 10.3969/j.issn.2095-4344.2015.49.005

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Construction of elderly SIRT1 gene knockout mouse models of knee osteoarthritis

Yu Fei, Lei Ming, Zeng Hui, Li Ming-hua, Xiao De-ming   

  1. Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Received:2015-09-05 Online:2015-11-30 Published:2015-11-30
  • Contact: Xiao De-ming, M.D., Chief physician, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • About author:Yu Fei, Studying for master’s degree, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81272032; a grant from Health and Family Planning Committee of Shenzhen of China, No. 201302064; a grant from Science and Technology Innovation Committee of Shenzhen of China, No. JCY20130402114702130

Abstract:

BACKGROUND: Scholars in China and countries outside China conducted a lot of researches on the pathogenesis and treatment of osteoarthritis, and recently found that SIRT1 gene has an important significance in the pathogenesis of osteoarthritis. However, little is reported on SIRT1 gene, and there are few studies on animal models of knee osteoarthritis used for SIRT1 research.
OBJECTIVE: To establish specific SIRT1 gene knockout mouse models of knee osteoarthritis, in order to provide favorable conditions for the study of osteoarthritis.
METHODS: Mice were randomly divided into four groups according to the method of randomized controlled grouping: SIRT1+/+ control group (Group A, n=6); SIRT1+/+ osteoarthritis model group (Group B, n=6); SIRT1-/- control group (Group C, n=6); SIRT1-/- osteoarthritis model group (Group D, n=6). Unilateral knee anterior cruciate ligament transection and medial meniscectomy were conducted to establish mouse models of osteoarthritis. SIRT1 gene knockout was determined by quantitative fluorescence polymerase chain reaction. Knee cartilage morphological changes were observed by hematoxylin-eosin and safranin O-fast green double staining. The degree of knee osteoarthritis was evaluated by Mankin score. 

 

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