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Hu Y, Zhang T, Chen J, Cheng W, Chen J, Zheng Z, Lin J, Zhu G, Zhang Y, Bai X, Wang Y, Song B, Wang Q, Qin L, Zhang P. Downregulation of Hypoxia-Inducible Factor-1α by RNA Interference Alleviates the Development of Collagen-Induced Arthritis in Rats. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 19:1330-1342. [PMID: 32160704 PMCID: PMC7038004 DOI: 10.1016/j.omtn.2020.01.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 12/13/2022]
Abstract
Rheumatoid arthritis (RA) is the most common type of autoimmune arthritis. Hypoxia-inducible factor-1α (HIF-1α) as a transcription factor in response to hypoxia suggests that it could be a potential therapeutic target for the treatment of RA. In this study, we assessed whether the HIF pathway blockade attenuates the manifestations of RA in the collagen-induced arthritis (CIA) rat model. We constructed a short hairpin RNA (shRNA) lentiviral expression vector targeting HIF-1α (pLVX-shRNA-HIF-1α) and to achieve HIF-1α RNA interference. Quantitative RT-PCR, immunofluorescence staining, and western blot were used to detect the expressions of HIF-1α, vascular endothelial growth factor (VEGF), phsopho (p)-p65, and p-IКBɑ mRNA and protein, respectively. Micro-computed tomography was used to investigate joint morphology at different time points after CIA induction. Moreover, enzyme-linked immunosorbent assay (ELISA) was used to monitor the expression of inflammatory cytokines. In vitro analyses revealed that pLVX-shRNA-HIF-1α effectively inhibited the expression of HIF-1α and VEGF and led to the activation of p-65 and p-IКBɑ, as well as decreased proinflammatory cytokine expression in cell culture. Inhibition of HIF-1α in rats decreased signs of a systemic inflammatory condition, together with decreased pathological changes of RA. Moreover, downregulation of HIF-1α expression markedly reduced the synovitis and angiogenesis. In conclusion, we have shown that pharmacological inhibition of HIF-1 may improve the clinical manifestations of RA.
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Affiliation(s)
- Yiping Hu
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; Department of Rheumatism and Immunology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, China
| | - Tiantian Zhang
- Department of Rheumatology, People's Hospital of Bao'an District, Shenzhen, Guangdong 518128, China
| | - Jingqin Chen
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; University of Chinese Academy of Sciences, Beijing 10049, China
| | - WenXiang Cheng
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; University of Chinese Academy of Sciences, Beijing 10049, China
| | - Jianhai Chen
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; University of Chinese Academy of Sciences, Beijing 10049, China
| | - Zhengtan Zheng
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China
| | - Jietao Lin
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; University of Chinese Academy of Sciences, Beijing 10049, China
| | - Guoyuan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, China
| | - Yong Zhang
- Shenzhen Pingle Orthopaedic Hospital, Guangdong 518000, China
| | - Xueling Bai
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China
| | - Yan Wang
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China
| | - Bing Song
- School of Dentistry, Cardiff University, Cardiff, Heath Park, CF23 6AL Wales, UK
| | - Qingwen Wang
- Department of Rheumatism and Immunology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, China.
| | - Ling Qin
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China.
| | - Peng Zhang
- Center for Translational Medicine Research and Development, Shen Zhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, Guangdong 518055, China; University of Chinese Academy of Sciences, Beijing 10049, China; University of Chinese Academy of Sciences, Shenzhen Hospital, Shenzhen 518000, China.
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Dietary Keratan Sulfate from Shark Cartilage Modulates Gut Microbiota and Increases the Abundance of Lactobacillus spp. Mar Drugs 2016; 14:md14120224. [PMID: 27941632 PMCID: PMC5192461 DOI: 10.3390/md14120224] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 11/21/2016] [Accepted: 12/05/2016] [Indexed: 12/31/2022] Open
Abstract
Keratan sulfate (KS) represents an important family of glycosaminoglycans that are critical in diverse physiological processes. Recently, accumulating evidence has provided a wealth of information on the bioactivity of KS, which established it as an attractive candidate for drug development. However, although KS has been widely explored, less attention has been given to its effect on gut microbiota. Therefore, given that gut microbiota plays a pivotal role in health homeostasis and disease pathogenesis, we investigated here in detail the effect of KS on gut microbiota by high-throughput sequencing. As revealed by heatmap and principal component analysis, the mice gut microbiota was readily altered at different taxonomic levels by intake of low (8 mg/kg) and high dosage (40 mg/kg) of KS. Interestingly, KS exerted a differing effect on male and female microbiota. Specifically, KS induced a much more drastic increase in the abundance of Lactobacillus spp. in female (sixteen-fold) versus male mice (two-fold). In addition, combined with alterations in gut microbiota, KS also significantly reduced body weight while maintaining normal gut homeostasis. Altogether, we first demonstrated a sex-dependent effect of KS on gut microbiota and highlighted that it may be used as a novel prebiotic for disease management.
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