The gut microbiota metabolite capsiate regulate SLC2A1 expression by targeting HIF-1α to inhibit knee osteoarthritis-induced ferroptosis

被引:68
作者
Guan, Zhiyuan [1 ,2 ]
Jin, Xiao [3 ,4 ]
Guan, Zhiqiang [4 ]
Liu, Shengfu [1 ]
Tao, Kun [1 ]
Luo, Liying [2 ]
机构
[1] Tongji Univ, Shanghai Peoples Hosp 10, Dept Orthoped, Shanghai, Peoples R China
[2] Shanghai Jiao Tong Univ, Tongren Hosp, Sch Med, Dept Ophthalmol, Shanghai, Peoples R China
[3] First Peoples Hosp Xuzhou, Dept Rheumatol & Immunol, Xuzhou, Jiangsu, Peoples R China
[4] Xuzhou Med Univ, Xuzhou Municipal Hosp, Dept Dermatol, Xuzhou, Jiangsu, Peoples R China
关键词
Ferroptosis; HIF-1; alpha; iron homeostasis; osteoarthritis; GLUCOSE-METABOLISM; MURINE MODEL; IRON; CARTILAGE; HYPOXIA; SERUM; MALONDIALDEHYDE; ASSOCIATION; GLUTATHIONE; PROGRESSION;
D O I
10.1111/acel.13807
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Ferroptosis is an iron-dependent cell death that has been found to aggravate the progression of osteoarthritis (OA) and gut microbiota- OA axis refers to the bidirectional information network between the gut microbiota and OA, which may provide a new way to protect the OA. However, the role of gut microbiota-derived metabolites in ferroptosis-relative osteoarthritis remains unclear. The objective of this study was to analyze the protective effect of gut microbiota and its metabolite capsiate (CAT) on ferroptosis-relative osteoarthritis in vivo and in vitro experiments. From June 2021 to February 2022, 78 patients were evaluated retrospectively and divided into two groups: The health group (n = 39) and the OA group (n = 40). Iron and oxidative stress indicators were determined in peripheral blood samples. And then in vivo and in vitro experiments, a surgically destabilized medial meniscus (DMM) mice model was established and treated with CAT or Ferric Inhibitor-1 (Fer-1). Solute Carrier Family 2 Member 1 (SLC2A1) short hairpin RNA (shRNA) was utilized to inhibit SLC2A1 expression. Serum iron was increased significantly but total iron binding capacity was decreased significantly in OA patients than healthy people (p < 0.0001). The least absolute shrinkage and selection operator clinical prediction model suggested that serum iron, total iron binding capacity, transferrin, and superoxide dismutase were all independent predictors of OA (p < 0.001). Bioinformatics results suggested that SLC2A1, Metastasis-Associated Lung Adenocarcinoma Transcript 1 (MALAT1), and HIF-1 alpha (Hypoxia Inducible Factor 1 Alpha)-related oxidative stress signaling pathways play an important role in iron homeostasis and OA. In addition, gut microbiota 16s RNA sequencing and untargeted metabolomics were used to find that gut microbiota metabolites CAT in mice with osteoarthritis were negatively correlated with Osteoarthritis Research Society International (OARSI) scores for chondrogenic degeneration (p = 0.0017). Moreover, CAT reduced ferroptosis-dependent osteoarthritis in vivo and in vitro. However, the protective effect of CAT against ferroptosis-dependent osteoarthritis could be eliminated by silencing SLC2A1. SLC2A1 was upregulated but reduced the SLC2A1 and HIF-1 alpha levels in the DMM group. HIF-1 alpha, MALAT1, and apoptosis levels were increased after SLC2A1 knockout in chondrocyte cells (p = 0.0017). Finally, downregulation of SLC2A1 expression by Adeno-associated Virus (AAV) -SLC2A1 shRNA improves osteoarthritis in vivo. Our findings indicated that CAT inhibited HIF-1a expression and reduced ferroptosis-relative osteoarthritis progression by activating SLC2A1.
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页数:22
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