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Han W, Qiu HY, Sun S, Fu ZC, Wang GQ, Qian X, Wang L, Zhai X, Wei J, Wang Y, Guo YL, Cao GH, Ji RJ, Zhang YZ, Ma H, Wang H, Zhao M, Wu J, Bi L, Chen QB, Li Z, Yu L, Mou X, Yin H, Yang L, Chen J, Yang B, Zhang Y. Base editing of the HBG promoter induces potent fetal hemoglobin expression with no detectable off-target mutations in human HSCs. Cell Stem Cell 2023; 30:1624-1639.e8. [PMID: 37989316 DOI: 10.1016/j.stem.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 09/13/2023] [Accepted: 10/24/2023] [Indexed: 11/23/2023]
Abstract
Reactivating silenced γ-globin expression through the disruption of repressive regulatory domains offers a therapeutic strategy for treating β-hemoglobinopathies. Here, we used transformer base editor (tBE), a recently developed cytosine base editor with no detectable off-target mutations, to disrupt transcription-factor-binding motifs in hematopoietic stem cells. By performing functional screening of six motifs with tBE, we found that directly disrupting the BCL11A-binding motif in HBG1/2 promoters triggered the highest γ-globin expression. Via a side-by-side comparison with other clinical and preclinical strategies using Cas9 nuclease or conventional BEs (ABE8e and hA3A-BE3), we found that tBE-mediated disruption of the BCL11A-binding motif at the HBG1/2 promoters triggered the highest fetal hemoglobin in healthy and β-thalassemia patient hematopoietic stem/progenitor cells while exhibiting no detectable DNA or RNA off-target mutations. Durable therapeutic editing by tBE persisted in repopulating hematopoietic stem cells, demonstrating that tBE-mediated editing in HBG1/2 promoters is a safe and effective strategy for treating β-hemoglobinopathies.
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Affiliation(s)
- Wenyan Han
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Hou-Yuan Qiu
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Shangwu Sun
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China; Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China
| | - Zhi-Can Fu
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200031, China; Center for Molecular Medicine, Children's Hospital of Fudan University and Shanghai Key Laboratory of Medical Epigenetics, International Laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Guo-Quan Wang
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Xiaowen Qian
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Lijie Wang
- CorrectSequence Therapeutics, Shanghai 201210, China
| | - Xiaowen Zhai
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Jia Wei
- Center for Molecular Medicine, Children's Hospital of Fudan University and Shanghai Key Laboratory of Medical Epigenetics, International Laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Yichuan Wang
- CorrectSequence Therapeutics, Shanghai 201210, China
| | - Yi-Lin Guo
- Center for Molecular Medicine, Children's Hospital of Fudan University and Shanghai Key Laboratory of Medical Epigenetics, International Laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Guo-Hua Cao
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Rui-Jin Ji
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Yi-Zhou Zhang
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Hongxia Ma
- CorrectSequence Therapeutics, Shanghai 201210, China
| | - Hongsheng Wang
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Mingli Zhao
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Jing Wu
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Lili Bi
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Qiu-Bing Chen
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Zifeng Li
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Ling Yu
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Xiaodun Mou
- CorrectSequence Therapeutics, Shanghai 201210, China
| | - Hao Yin
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Department of Pathology and Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; TaiKang Centre for Life and Medical Sciences, TaiKang Medical School, Wuhan University, Wuhan, China; State Key Laboratory of Virology, Wuhan University, Wuhan, China
| | - Li Yang
- Center for Molecular Medicine, Children's Hospital of Fudan University and Shanghai Key Laboratory of Medical Epigenetics, International Laboratory of Medical Epigenetics and Metabolism, Ministry of Science and Technology, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
| | - Jia Chen
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China; Shanghai Clinical Research and Trial Center, Shanghai 201210, China; Shanghai Frontiers Science Center for Biomacromolecules and Precision Medicine, ShanghaiTech University, Shanghai 200031, China.
| | - Bei Yang
- Gene Editing Center, School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China; Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, China; Shanghai Clinical Research and Trial Center, Shanghai 201210, China; Shanghai Frontiers Science Center for Biomacromolecules and Precision Medicine, ShanghaiTech University, Shanghai 200031, China.
| | - Ying Zhang
- Department of Rheumatology and Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; State Key Laboratory of Virology, Wuhan University, Wuhan, China.
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Bi L, Deng J, Chen Q, Song Q. The "Hand as Foot" figural teaching method in the osteoarthritis. Asian J Surg 2023; 46:1422-1423. [PMID: 36155160 DOI: 10.1016/j.asjsur.2022.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/06/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Lili Bi
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong province, China
| | - Jiemin Deng
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong province, China
| | - Qu Chen
- Department of Rheumatology, Binzhou Medical University Hospital, Binzhou, Shandong province, China
| | - Qiong Song
- Department of Cardiology, Affiliated Hospital of Binzhou Medical University, Binzhou City, Shandong Province, China.
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Chen L, Chen G, Bi L, Yang Z, Wu Z, Huang M, Bao J, Wang W, Ye C, Pan J, Peng Y, Ye C. A highly sensitive strain sensor with a sandwich structure composed of two silver nanoparticles layers and one silver nanowires layer for human motion detection. Nanotechnology 2021; 32:375504. [PMID: 34111854 DOI: 10.1088/1361-6528/ac0a17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/10/2021] [Indexed: 06/12/2023]
Abstract
The fabrication of strain sensors with high sensitivity, large sensing range and excellent stability is highly desirable because of their promising applications in human motion detection, human-machine interface and electric skin, etc. Herein, by introducing a highly conductive silver nanowire (AgNW) layer between two serried silver nanoparticle (AgNP) layers, forming a sandwich structure, a strain sensor with high sensitivity (a large gauge factor of 2.8 × 105), large sensing range (up to 80% strain) and excellent stability (over 1000 cycles) can be achieved. A combination of experimental and mechanism studies shows that the high performance of the obtained strain sensor is ascribed to the synergy of the highly conductive AgNW layer, astatic AgNP layers and the presence of large cracks in stretching. As a proof-of-concept application, the obtained strain sensor can be used for highly effective human motion detection ranging from large scale motions, i.e. kneel bending and wrist flexion, to subtle scale motions, i.e. pulse and swallowing.
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Affiliation(s)
- Liangjun Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Guinan Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Lili Bi
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Zhonglin Yang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Zhen Wu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Minchu Huang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Jiashuan Bao
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Wenwen Wang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Cui Ye
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Jun Pan
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Yongwu Peng
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Changhui Ye
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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Yu X, Bao J, Cui X, DU F, Wang Y, Bi L, Sun J, Li L. Pyrrolidinedithiocarbamic Acid Ammonium Salt Inhibits Apoptosis and Phenotypic Transformation of Co-Culture of Myeloma Cells and Renal Tubular Epithelial Cells by Reducing the Secretion of Light Chain Protein. Iran J Public Health 2021; 49:2078-2086. [PMID: 33708728 PMCID: PMC7917491 DOI: 10.18502/ijph.v49i11.4723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background: We investigate the effects of NFϰB inhibitor pyrrolidinedithiocarbamic acid ammonium salt (PDTC) on the viability, apoptosis and cell phenotype of HK-2 cells in the co-culture system of myeloma cells in renal tubular epithelial cells. Methods: This study was performed in Qiqihar Medical University, Qiqihar, China from Jun 2018 to Jan 2019. RPMI-8226 cells and HK-2 cells were inoculated in the co-culture chamber and cultured to establish the co-culture system. An immunoturbidimetric assay was performed to detect ϰ light chain and λ light chain in RPMI-8226 cells. The effect of PDTC on the secretion of ϰ light chain and λ light chain of RPMI-8226 cells was detected by immunoturbidimetry and the ratio was calculated. Results: PDTC significantly increased the viability of HK-2 cells. PDTC reduced the apoptosis of renal tubular epithelial cells. After PDTC treatment, the expression of cell surface marker E-cadherin decreased, and the expression of α-SMA increased, which induced the renal interstitial fibrosis. The secretion of ϰ light chain and λ light chain of RPMI-8226 cells was significantly decreased after the addition of PDTC, but the ratio was not changed. Conclusion: PDTC can inhibit the cell activity, promote apoptosis, and reduce the secretion of secretion of ϰ light chain and λ light chain through inhibiting the NF-ϰB pathway activation of myeloma cell RPMI-8226.
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Affiliation(s)
- Xiaoyan Yu
- Department of Nephrology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
| | - Jie Bao
- Department of Hematopathology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
| | - Xinyu Cui
- Department of Hematopathology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
| | - Fengxia DU
- Department of Pathogenic Biology, Qiqihar Medical University, Qiqihar161006, P.R. China
| | - Yuefei Wang
- Department of Physiology, Qiqihar Medical University, Qiqihar161006, P.R. China
| | - Lili Bi
- Department of Hematopathology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
| | - Jun Sun
- Department of Hematopathology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
| | - Ling Li
- Department of Hematopathology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar161000, P.R. China
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Bi LL, Hua XQ, Li WH, Wang L, Li Y, Jia XF. SNHG16 promotes cell proliferation and migration through sponging miR-132 in melanoma. J BIOL REG HOMEOS AG 2020; 34:1307-1316. [PMID: 32864914 DOI: 10.23812/20-172-a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Melanoma, which originates from the transformation of normal melanocytes, is one of the three main types of skin cancer. We aimed to explore the functions of SNHG16 and miR-132 in melanoma. CCK-8, Transwell assays were used to measure the viability and migration, respectively. Spearman's correlation analysis was performed to analyze the relationship between the expression of SNHG16, miR-132 and LAPTM4B in melanoma tissues. SNHG16 was overexpressed, and miR-132 was low expressed in melanoma tissues and cell lines. Moreover, overexpression of SNHG16 was associated with poor prognosis of melanoma patients. The expression of SNHG16 had a negative connection with the expression of miR-132, and it had a positive relationship with the expression of LAPTM4B in melanoma tissues. Knockdown of SNHG16 or overexpression of miR-132 inhibited SK-MEL-2 cell proliferation and migration. In addition, we confirmed that SNHG16 directly binding to miR-132 promotes the expression of LAPTM4B, facilitating the tumorigenesis of melanoma. SNHG16 promotes the expression of LAPTM4B by sponging miR-132, thereby acting as an oncogene in melanoma. This study demonstrated that the lncRNA-miRNA-mRNA signal cascade existed in melanoma, which may help elucidate the tumorigenesis and development mechanism of melanoma.
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Affiliation(s)
- L L Bi
- Department of Dermatology, Yeda Hospital of Yantai, Yantai. China
| | - X Q Hua
- Department of Clinical Laboratory, Jinan Zhangqiu District Hospital of TCM, Jinan, China
| | - W H Li
- No 2 Department of Oncology, Qingdao Central Hospital, Qingdao University, Qingdao, China
| | - L Wang
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Y Li
- Department of Interventional Angiology, the People's Hospital of Zhangqiu Area, Jinan, China
| | - X F Jia
- Department of Oncology, Jining No.1 People's Hospital, Affiliated Jining No. 1 People's Hospital of Jining Medical University, Jining Medical University, Jining, China
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Yang Z, Wang W, Bi L, Chen L, Wang G, Chen G, Ye C, Pan J. Wearable electronics for heating and sensing based on a multifunctional PET/silver nanowire/PDMS yarn. Nanoscale 2020; 12:16562-16569. [PMID: 32749436 DOI: 10.1039/d0nr04023a] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Stretchable and flexible electronics built from multifunctional fibres are essential for devices in human-machine interactions, human motion monitoring and personal healthcare. However, the combination of stable heating and precision sensing in a single conducting yarn has yet to be achieved. Herein, a yarn comprising poly(ethylene terephthalate) (PET), silver nanowires (AgNWs), and polydimethylsiloxane (PDMS) was designed and prepared. The PET/AgNW/PDMS yarn exhibited high electrical conductivity at ≈3 Ω cm-1 and a large tolerance to tensile strain up to 100% its own length. Only a negligible loss of electromechanical performance was observed after 1700 strain cycles. And an excellent response to applied strain was also achieved across a huge stretching range. The PET/AgNW/PDMS yarn displayed excellent heating performance and outstanding breathability when used in a heating fabric, and excellent sensitivity for monitoring both gross and fine movements in humans when used as a sensor.
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Affiliation(s)
- Zhonglin Yang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Wenwen Wang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Lili Bi
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Liangjun Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Guixin Wang
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Guinan Chen
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Cui Ye
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jun Pan
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Chen G, Bi L, Yang Z, Chen L, Wang G, Ye C. Water-Based Purification of Ultrathin Silver Nanowires toward Transparent Conductive Films with a Transmittance Higher than 99. ACS Appl Mater Interfaces 2019; 11:22648-22654. [PMID: 31190525 DOI: 10.1021/acsami.9b04425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ultrathin silver nanowires (UTAgNWs) are indispensable to achieve transparent conductive films (TCFs) with overall optoelectronic performance exceeding that of the state-of-the-art indium tin oxide films. Impurities in raw UTAgNW products severely impair the optical properties of TCFs. Unfortunately, highly effective and environment-friendly approaches for purification of UTAgNWs are still lacking. Herein, we report the purification of UTAgNWs using deionized water along with a small amount of surfactants as the purifying agent. TCFs coated with the purified UTAgNWs exhibit a light transmittance of 97.9% and a haze of 1.22% at a sheet resistance of 36.3 Ω sq-1 or a light transmittance of 99.8% and a haze of 0.47% at a sheet resistance of 187.3 Ω sq-1. Both the transmittance and the haze are among the best reported values for AgNW TCFs in the literature. The purification process does not involve any toxic or hazardous chemicals and is both scalable and cost-effective.
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Affiliation(s)
- Guinan Chen
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Lili Bi
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Zhonglin Yang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Liangjun Chen
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Guixin Wang
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
| | - Changhui Ye
- College of Materials Science and Engineering , Zhejiang University of Technology , Hangzhou 310014 , China
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Xu X, Han Y, Huang H, Bi L, Kong X, Ma X, Shi B, Xiao L. Circulating NK cell subsets and NKT‑like cells in renal transplant recipients with acute T‑cell‑mediated renal allograft rejection. Mol Med Rep 2019; 19:4238-4248. [PMID: 30942398 PMCID: PMC6471129 DOI: 10.3892/mmr.2019.10091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 11/06/2018] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence indicates that natural killer (NK) cells and NKT-like cells may affect allograft outcomes following solid organ transplantation. However, the roles of these cells in allograft acceptance and dysfunction are controversial. To assess the changes in NK cell and CD3+CD56+ NKT-like cell frequency and phenotype in renal allograft recipients and to explore their associations with acute T-cell-mediated renal allograft rejection (ACR), longitudinal changes in NK and NKT-like cell frequency and phenotype were characterized using flow cytometry and immunohistochemistry in the peripheral blood and kidney allograft tissues in 142 recipients undergoing kidney transplantation. The serum concentrations of NK cell-associated cytokines were also detected by cytokine multiplex immunoassay. In contrast to the healthy controls, recipients with stable graft function exhibited increased proportions of CD56brightCD16dim subsets and decreased proportions of NKT-like cells in their peripheral blood mononuclear cells (PBMCs). Patients with ACR demonstrated increased proportions of NK cells, which were associated with increased CD3−CD56bright subsets and decreased CD3−CD56dim subsets, an increase in the CD56bright/CD56dim ratio in PBMCs and increased CD56+ NK cell infiltration in the kidney allograft, compared with the stable controls. In addition, there was a decreased proportion of NKT-like cells in patients with ACR, and an increased ratio of CD56bright/NKT-like cells compared with the stable controls. These differences appeared to be consistent with the increase in the serum concentrations of C-C motif chemokine 19 and the decrease in the serum concentrations of interleukin-15. These data indicate that CD56bright NK cells may promote the development of ACR, and that NKT-like cells may have immunoregulatory function. The results also imply that the CD56bright/CD56dim ratio may affect the ACR signatures.
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Affiliation(s)
- Xiaoguang Xu
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Yong Han
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Haiyan Huang
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Lili Bi
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Xiangrui Kong
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Xihui Ma
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Bingyi Shi
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Li Xiao
- Beijing Key Laboratory of Organ Transplant and Immune Regulation, Transplant Research Laboratory of Organ Transplantation Institute, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
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Bai J, Xiao L, Tao Z, Cao B, Han Y, Fan W, Kong X, Ma X, Gao Y, Bi L, Chen W, Shi B, Liu X. Ectopic expression of E3 ubiquitin-protein ligase 2 in glioma and enhances resistance to apoptosis through activating nuclear factor κ-light-chain-enhancer of B cells. Oncol Lett 2018; 16:4391-4399. [PMID: 30214574 PMCID: PMC6126155 DOI: 10.3892/ol.2018.9153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 03/07/2018] [Indexed: 12/31/2022] Open
Abstract
Nuclear factor κ-light-chain-enhancer of B cells (NF-κB) is one of the most important tumorigenic factors. Although it has been established that NF-κB is overly activated in human glioma cells, the molecular mechanisms that lead to the signal transduction to NF-κB and thereby the induction of resistance to apoptosis remain poorly understood. The present study demonstrated that mRNA and protein levels of E3 ubiquitin-protein ligase 2 (MIB2) were markedly upregulated in glioma cell lines and clinical samples. Immunohistochemical analysis also revealed high levels of MIB2 expression in glioma specimens. Ectopic overexpression of MIB2 was established in glioma cell lines to investigate its fundamental roles in the response of human glioma to apoptotic inducers. The results indicated that ultraviolet irradiation-induced cell apoptosis was inhibited with MIB2 overexpression in glioma cells. Notably, knockdown of MIB2 using RNA interference was able to increase the sensitivity of glioma cells to the pro-apoptotic agents. The present study identified that MIB2 induces NF-κB activation and facilitates the resistance of glioma cell to apoptosis. It was proposed that MIB2 may not only be an important hallmark to glioma disease progression, but that it may also offer novel clinical strategies to overcome resistance to cancer therapies.
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Affiliation(s)
- Jian Bai
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China.,Experimental Animal Centre, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110032, P.R. China
| | - Li Xiao
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Zhen Tao
- Department of Neurosurgery, General Hospital of Jinan Military Command, Jinan, Shandong 250031, P.R. China
| | - Bingzhen Cao
- Experimental Animal Centre, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110032, P.R. China
| | - Yong Han
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Wenmei Fan
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Xiangrui Kong
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Xihui Ma
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Yu Gao
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Lili Bi
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Wen Chen
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Bingyi Shi
- Institute of Organ Transplantation, The 309th Hospital of Chinese People's Liberation Army, Beijing 100091, P.R. China
| | - Xicheng Liu
- Department of Anesthesia, Shenzhen People's Hospital, Shenzhen, Guangdong 5188020, P.R. China
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Huang HY, Xiao L, Bi LL, Gao Y, Kong XR, Du R, Li BY, Han Y, Zhang WH, Shi BY. [A preliminary research on the exosome influenced by virus infection in the renal transplantation recipients]. Zhonghua Yi Xue Za Zhi 2018; 98:171-175. [PMID: 29374909 DOI: 10.3760/cma.j.issn.0376-2491.2018.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Virus infection is a common complication of transplantation.With the research and application of exosome is becoming more popular, this study focused on whether the virus particles and nucleic acids exist in the exosomes extracted from the plasma of recipients with virus infection after renal transplantation. Methods: A total of 10 independent transplantation recipients at Institute of Organ Transplantation, 309th Hospital of Chinese People's Liberation Army from January 2015 to July 2017 were studied in this study.5 cases of positive or suspected positive in granulocytes HCMV pp65 antigen detection and positive in plasma HCMV DNA test, and the other 5 cases of positive results in plasma BK DNA test were adopted.Exosomes were extracted from the collected plasma samples with SBI kit.Electron microscopy and nanoparticles tracing analyzer (NTA) were used for exosome analysis.Quantitative real-time PCR method was used to inspect and compare virus DNA copies number in plasma, exosome and effluent. Results: Typical exosome-like vesicle structure was observed.NTA put forward the sample concentration data from 1.2 to 4.5×10(12) particles/ml, and the particle diameters were 30-200 nm.In the qRT-PCR assays, the viral DNA quantitative results of exosome samples are lower but on the same magnitude compared with that of the plasma, and sharply decreased in effluent. Conclusions: Virus DNAs in exosome samples of recipients with viral infection after transplantation were detected in great quantities.This not only hints the spread of the virus may take advantage of the biological formation process of exosomes, but also warns that the limitation of the existing way to extract exosmes from virus infected population may be a bottleneck in research.
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Affiliation(s)
- H Y Huang
- Institute of Organ Transplantation, 309th Hospital of Chinese People's Liberation Army, Beijing 100091, China
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Chen W, Yang M, Bai J, Li X, Kong X, Gao Y, Bi L, Xiao L, Shi B. Exosome-Modified Tissue Engineered Blood Vessel for Endothelial Progenitor Cell Capture and Targeted siRNA Delivery. Macromol Biosci 2017; 18. [PMID: 29205878 DOI: 10.1002/mabi.201700242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/22/2017] [Indexed: 12/20/2022]
Abstract
Instability and poor targeting causes the long-term patency of RNA-modified tissue engineering blood vessels (TEBVs) remaining unsatisfactory. RNA can be enriched in exosome and then delivered into targeted cells while whether exosome-modified TEBVs achieve RNA targeted delivery is unclear. Here, to promote the expression of klotho protein on the mesenchymal stem cell (MSC)-derived exosomes, klotho plasmids are first transfected into MSCs, and adenosine kinase (ADK) siRNA is then loaded into exosome (klotho/ADK siRNA-exosome) using electrotransfection. Flow chamber results show that klotho/ADK siRNA-exosome can effectively capture circulating endothelial progenitor cells (EPCs). Besides, the captured EPCs can endocytose this exosome, and then decompose it into klotho protein and ADK siRNA. Moreover, ADK siRNA promotes the paracrine of proangiogenic factors and adenosine from EPCs, which further facilitate proliferation and migration of endothelial cells. Based on polyethyleneimine-capped gold nanoparticles, exosome-modified TEBVs are constructed through layer-by-layer assembly. Animal experimental results show that klotho/ADK siRNA-exosome-modified TEBVs can maintain the patency up to one month, and good endothelialization is observed. In short, one exosome-modified TEBV is constructed, capture molecules on the surface of exosome capture the circulating EPCs, and the loaded RNA achieves its purpose of accurate treatment depending on the needs of patients.
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Affiliation(s)
- Wen Chen
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Mingcan Yang
- Department of Anatomy, National & Regional Engineering Laboratory of Tissue Engineering, Key Lab for Biomechanics and Tissue Engineering of Chongqing, Third Military Medical University, Chongqing, 400038, China
| | - Jian Bai
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Xiang Li
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Xiangrui Kong
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Yu Gao
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Lili Bi
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Li Xiao
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
| | - Bingyi Shi
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army, Beijing, 100091, China
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Zhang H, Ge J, Hong H, Bi L, Sun Z. Genetic polymorphisms in ERCC1 and ERCC2 genes are associated with response to chemotherapy in osteosarcoma patients among Chinese population: a meta-analysis. World J Surg Oncol 2017; 15:75. [PMID: 28388903 PMCID: PMC5383995 DOI: 10.1186/s12957-017-1142-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 03/22/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND There existed controversies about the association between the response to chemotherapy for osteosarcoma (OS) patients and the genetic polymorphisms in excision repair cross-complementation group (ERCC1 and ERCC2) genes. We aimed to perform a meta-analysis to comprehensively evaluate the association. METHOD We searched multiple databases for literature retrieval including the PubMED (1966 ∼ 2017), Embase (1980 ∼ 2017), and the Web of science (1945 ∼ 2017). The overall odds ratios(OR) and their corresponding 95% confidence interval (CI) were calculated for the three polymorphisms under the dominant, recessive, and allelic models. RESULTS From six eligible articles in our study, we found that for ERCC1 rs11615 polymorphism, a significant association was detected between the chemotherapy response and the polymorphism under all three models (dominant model: OR = 2.015, P = 0.005; recessive model: OR = 1.791, P = 0.003; allelic model: OR = 1.677, P = 0.003), and OS patients carrying C allele in rs11615 polymorphism were more likely to response to chemotherapy. In terms of ERCC2 rs1799793 polymorphism, this polymorphism was significantly associated with the response to chemotherapy for OS patients under recessive model (OR = 1.337, P = 0.036), and patients with AG + AA genotype in rs1799793 polymorphism were more appropriate to receive chemotherapy. With respect to ERCC2 rs13181 polymorphism, this polymorphism was not correlated with the response to chemotherapy for OS patients under all three models. CONCLUSIONS Our meta-analysis suggested that among Chinese population, the rs11615 and rs1799793 polymorphisms were significantly correlated with the response to chemotherapy for patients with OS, and patients with CC or TC + CC genotypes in ERCC1 rs11615 polymorphism or AG + AA genotype in ERCC2 rs1799793 polymorphism were more suitable for chemotherapy.
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Affiliation(s)
- Haiguang Zhang
- Yantaishan Hospital, No. 91 Jiefang Road, 264000 Yantai City, Shandong Province China
| | - Junbo Ge
- Yantaishan Hospital, No. 91 Jiefang Road, 264000 Yantai City, Shandong Province China
| | - Huanyu Hong
- Yantaishan Hospital, No. 91 Jiefang Road, 264000 Yantai City, Shandong Province China
| | - Lili Bi
- Yeda Hospital, 264000 Yantai, Shandong Province China
| | - Zhengwen Sun
- Yantaishan Hospital, No. 91 Jiefang Road, 264000 Yantai City, Shandong Province China
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Bi LL, Gao Y, Sun YJ, Kong XR, He XY, Ma XH, Zhang WH, Xiao L, Shi BY. [Research of mHLA-G and the receptor expression with kidney rejection and CMV active infection following kidney transplantation]. Zhonghua Yi Xue Za Zhi 2017; 97:104-107. [PMID: 28088953 DOI: 10.3760/cma.j.issn.0376-2491.2017.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the expression of membrane HLA-G (mHLA-G) and the receptor immunoglobulin-like transcript 2(ILT2) on lymphocyte and find their association with rejection and cytomegalovirus (CMV) infection after renal transplantation. Methods: A total of 88 cases of renal transplant recipients for the first time from February 2014 to February 2016 were studied in this work. Recipients can be divided into rejection group (n=12) and stable renal function group (n=41) according to whether rejection occurred. Recipients only infected CMV not developed rejection were included in the CMV positive group (n=24). CMV negative group (n=11) including CMV negative recipients once infected CMV.The expression of mHLA-G and ILT2 on lymphocytes were detected by flow cytometry, and the differences among different groups were analyzed. Results: The data showed that after renal transplantation, T and B lymphocytes mHLA-G expression rate was the lowest in the rejection group (0.42%±0.35%, 0.88%±0.47%), having significant difference with renal function stable group and CMV positive group (all P<0.01). In CMV positive group the expression of mHLA-G on T and B lymphocytes was the highest (1.31%±0.69%, 2.01%±0.91%), having significant difference with rejection group (P<0.001). The expression of mHLA-G on B cell was statistically significantly different between CMV positive group and CMV negative group (P<0.05). There was no significant difference in ILT2 expression on B cell among the four groups (P>0.05). The expression rate of ILT2 on T cells was higher in the CMV positive group (36.91%±14.91%), having significant difference with the other three groups (P<0.01). Conclusions: Low expression of mHLA-G on T and B lymphocytes may predict rejection after renal transplantation. High expression of mHLA-G and ILT2 on lymphocytes is prone to CMV infection after renal transplantation .
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Affiliation(s)
- L L Bi
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Laboratory of Organ Transplant Center, No.309 Hospital of PLA, Beijing 100091, China
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Xiao L, Bai J, He XY, Han Y, Xu XG, Fan WM, Bi LL, Gao Y, Kong XR, Wei YX, Shi BY. [Expression and significance of neutrophil surface adhesion molecules in renal transplant recipients with cytomegalovirus infection]. Zhonghua Yi Xue Za Zhi 2016; 96:1562-5. [PMID: 27266682 DOI: 10.3760/cma.j.issn.0376-2491.2016.20.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To study the expression and its diagnostic significance of neutrophil surface adhesion molecules including CD11b, CD15 and CD62L after renal transplantation in recipients with cytomegalovirus (CMV) infection. METHODS Blood samples were collected from 142 kidney transplant recipients, including 95 males and 47 females, who received allogeneic renal transplantation between September 2009 and January 2015 in 309th Hospital of the PLA. Healthy volunteers (22 males and 9 females) were recruited from physical examination center in 309th Hospital of the PLA from September 2009 to January 2015 as healthy control group. Renal transplant recipients were divided into high active CMV infection group, active CMV infection group and CMV negative control group according to CMV-pp65 antigen detection. Neutrophil surface adhesion molecules CD11b, CD15 and CD62L were detected by flow cytometry and their mean fluorescence intensity compared among the groups. Receiver operating characteristic (ROC) curves of CD11b, CD15 and CD62L in detecting active infection in renal transplant recipients were made. RESULTS The mean fluorescence intensity of CD15 in high active CMV infection group(n=17) and active CMV infection group(n=65)were 776.31±89.53 and 554.39±67.89, respectively, with significant differences compared with CMV negative control group (n=60, 334.92±44.69) and healthy control group (n=31, 310.56±39.67) (all P<0.05); the expression proportions of CD11b and CD62L in high active CMV infection group and were 42.31%±6.11% and 40.35%±6.47%, respectively, with significant differences compared with active CMV infection group(62.45%±5.67% and 65.65%±5.33%), CMV negative control group(70.74%±6.55% and 70.37%±6.71%) and healthy control group(72.52%±6.48% and 72.43%±6.51%) (all P<0.05). The optimal cut-off values of CD11b and CD62L in diagnosing active CMV infection group were 56.61% and 44.35%, respectively, with the sensitivity being both 100.00%, the specificity being 76.67% and 58.06% respectively, and the area under the curve (AUC) being 0.851 and 0.628 respectively; the optimal cut-off values of CD11b and CD62L in diagnosing high active CMV infection group were 66.57% and 69.56% respectively, with the sensitivity being 81.54% and 87.69% respectively, the specificity being 100.00% and 98.33% respectively, and the AUC being 1.000 and 0.991 respectively; the optimal cut-off values of mean fluorescence intensity of CD15 in diagnosing high active CMV infection group and active CMV infection group were 542.71 and 408.03 respectively, the sensitivity in the two groups being 100.00% and 98.46% respectively, the specificity being both 100.00%, and the AUC being 1.000 and 0.999 respectively. CONCLUSIONS Neutrophils CD15 expression may be up-regulated in renal transplantation recipients with CMV infection, while neutrophils CD11b and CD62L expressions are down-regulated. Such changes in CD15, CD11b and CD62L expression can be used as a basis for laboratory diagnosis of active CMV infection.
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Affiliation(s)
- L Xiao
- Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Laboratory of Organ Transplant Institue, 309th Hospital of the PLA, Beijing 100091, China
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Bi L, Pian Y, Chen S, Ren Z, Liu P, Lv Q, Zheng Y, Zhang S, Hao H, Yuan Y, Jiang Y. Toll-like receptor 4 confers inflammatory response to Suilysin. Front Microbiol 2015; 6:644. [PMID: 26167160 PMCID: PMC4481166 DOI: 10.3389/fmicb.2015.00644] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 06/12/2015] [Indexed: 12/14/2022] Open
Abstract
Streptococcus suis serotype 2 (SS2) is an emerging human pathogen worldwide. A large outbreak occurred in the summer of 2005 in China. Serum samples from this outbreak revealed that levels of the main proinflammatory cytokines were significantly higher in patients with streptococcal toxic-shock-like syndrome (STSLS) than in patients with meningitis only. However, the mechanism underlying the cytokine storm in STSLS caused by SS2 remained unclear. In this study, we found that suilysin (SLY) is the main protein inflammatory stimulus of SS2 and that native SLY (nSLY) stimulated cytokines independently of its haemolytic ability. Interestingly, a small amount of SLY (Å Mol/L) induced strong, long-term TNF-α release from human PBMCs. We also found that nSLY stimulated TNF-α in wild-type macrophages but not in macrophages from mice that carried a spontaneous mutation in TLR4 (P712H). We demonstrated for the first time that SLY stimulates immune cells through TLR4. In addition, the Myd88 adaptor-p38-MAPK pathway was involved in this process. The present study suggested that the TLR4-dependent inflammatory responses induced by SLY in host might contribute to the STSLS caused by SS2 and that p38-MAPK could be used as a target to control the release of excess TNF-α induced by SS2.
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Affiliation(s)
- Lili Bi
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China ; Beijing Key Laboratory of Immunology Regulatory and Organ Transplantation, Basic Research Lab of Organ Transplant Institute, 309th Hospital of the People's Liberation Army Beijing, China
| | - Yaya Pian
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Shaolong Chen
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Zhiqiang Ren
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Peng Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Qingyu Lv
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Yuling Zheng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Shengwei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Huaijie Hao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
| | - Yongqiang Jiang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology Beijing, China
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Tan H, Zou W, Jiang J, Tian Y, Xiao Z, Bi L, Zeng H, Tang X. Disturbance of hippocampal H2S generation contributes to CUMS-induced depression-like behavior: involvement in endoplasmic reticulum stress of hippocampus. Acta Biochim Biophys Sin (Shanghai) 2015; 47:285-91. [PMID: 25736403 DOI: 10.1093/abbs/gmv009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The chronic unpredictable mild stress (CUMS) model is a widely used experimental model of depression. Exogenous stress-induced neuronal cell death in the hippocampus is closely associated with the pathogenesis of depression. Excessive and prolonged endoplasmic reticulum (ER) stress triggers cell death. Hydrogen sulfide (H2S), the third endogenous signaling gasotransmitter, plays an important role in brain functions as a neuromodulator and a neuroprotectant. We hypothesized that the disturbance of endogenous H2S generation and ER stress in the hippocampus might be involved in CUMS-induced depression-like behaviors. Thus, the present study focused on whether CUMS disturbs the generation of endogenous H2S and up-regulates ER stress in the hippocampus and whether exogenous H2S prevents CUMS-induced depressive-like behaviors. Results showed that CUMS-treated rats exhibit depression-like behavior and hippocampal ER stress responses including up-regulated levels of glucose-regulated protein 78, CCAAT/enhancer binding protein homologous protein, and cleaved caspase-12 expression, while the endogenous generation of H2S in the hippocampus is suppressed in CUMS-treated rats. Furthermore, exogenous H2S prevents CUMS-induced depression-like behavior. These data indicated that CUMS-induced depression-like behaviors are related to the disturbance of endogenous H2S generation and ER stress in the hippocampus and suggested that endogenous H2S and ER stress are novel treatment targets of depression.
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Affiliation(s)
- Huiying Tan
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China Key Laboratory for Cognitive Disorders and Neurodegenerative Diseases, University of South China, Hengyang 421001, China
| | - Wei Zou
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Key Laboratory for Cognitive Disorders and Neurodegenerative Diseases, University of South China, Hengyang 421001, China
| | - Jiamei Jiang
- Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China Key Laboratory for Cognitive Disorders and Neurodegenerative Diseases, University of South China, Hengyang 421001, China
| | - Ying Tian
- Department of Biochemistry, University of South China, Hengyang 421001, China
| | - Zhifang Xiao
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China
| | - Lili Bi
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China
| | - Haiying Zeng
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China Key Laboratory for Cognitive Disorders and Neurodegenerative Diseases, University of South China, Hengyang 421001, China
| | - Xiaoqing Tang
- Department of Neurology, Nanhua Affiliated Hospital, University of South China, Hengyang 421001, China Department of Physiology and Institute of Neuroscience, Medical College, University of South China, Hengyang 421001, China Key Laboratory for Cognitive Disorders and Neurodegenerative Diseases, University of South China, Hengyang 421001, China
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Lv Q, Hao H, Bi L, Zheng Y, Zhou X, Jiang Y. Suilysin remodels the cytoskeletons of human brain microvascular endothelial cells by activating RhoA and Rac1 GTPase. Protein Cell 2014; 5:261-4. [PMID: 24639279 PMCID: PMC3978165 DOI: 10.1007/s13238-014-0037-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Qingyu Lv
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing, 100071, China
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He Z, Pian Y, Ren Z, Bi L, Yuan Y, Zheng Y, Jiang Y, Wang F. Increased production of suilysin contributes to invasive infection of the Streptococcus suis strain 05ZYH33. Mol Med Rep 2014; 10:2819-26. [PMID: 25241621 PMCID: PMC4227431 DOI: 10.3892/mmr.2014.2586] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Accepted: 06/05/2014] [Indexed: 11/09/2022] Open
Abstract
Streptococcus suis serotype 2 (SS2) is widely recognized in the veterinary world as the cause of rapidly progressive and fatal sepsis in infant pigs, manifested with meningitis, polyarthritis and pneumonia. It has evolved into a highly infectious strain, and caused two large-scale outbreaks of human epidemic in China, characterized bytypical toxic-shock syndrome and invasive infection. However, the molecular basis of virulence of this emerging zoonotic pathogen is still largely unknown. The present study shows that the sequence type (ST)7 epidemic strain S. suis 05ZYH33 causes higher mortality, higher necrosis of polymorphonuclear neutrophils and a significantly higher damage to human umbilical vein endothelial cells compared to the non-epidemic strain S. suis 1940. These differences appear to associate with the enhanced secretion of suilysin (sly) by S. suis 05ZYH33 compared to the non-epidemic strain 1940. Inclusion of additional strains confirmed that the epidemic ST7 strains produce more sly protein (mean, 1.49 g/ml; range, 0.76–1.91 g/ml) than non-epidemic strains (mean, 0.33 g/ml; range, 0.07–0.94 g/ml), and this difference is significant (P<0.001). The nonpolar mutant strain S. suis Δsly, constructed from the epidemic ST7 strain S. suis 05ZYH33 confirmed the role of sly on the enhanced virulence of S. suis ST7 strains. These findings suggest that increased sly production in S. suis 05ZYH33 facilitates penetration to the epithelium and its survival in the bloodstream, thereby contributing to the invasive infection.
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Affiliation(s)
- Zhengxin He
- Department of Clinical Laboratory, Bethune International Peace Hospital of PLA, Shijiazhuang, Hebei 050082, P.R. China
| | - Yaya Pian
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Zhiqiang Ren
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Lili Bi
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Yuan Yuan
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Yuling Zheng
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Yongqiang Jiang
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, P.R. China
| | - Fukun Wang
- Department of Clinical Laboratory, Bethune International Peace Hospital of PLA, Shijiazhuang, Hebei 050082, P.R. China
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Lv QY, Hao HJ, Bi LL, Zheng YL, Jiang YQ, Lv SX. [Purification and biological activities analysis of streptococcus suis Serotype 2 suilysin]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2011; 27:374-376. [PMID: 21481309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM To explore the purification methods of wild-type and recombinant suilysin and to evaluate their biological activities. METHODS Wild-type suilysin was purified by ammonium sulfate precipitation, anion-exchange chromatography and hydrophobic chromatography in turn, while recombinant suilysin was first refolded and purified by immobilized metal ion affinity chromatography, and further purified by Thiopropyl Sepharose 6B. The biological activities were evaluated by hemolysis test, cytotoxicity assay. RESULTS Both prepared wild-type and recombinant suilysin, with purify over 90%, have hemolysis activity and could injure target cells at high concentration while cholesterol could completely inhibit their activities. CONCLUSION Recombinant suilysin has similar biological activities with wild-type suilysin, and this work contributed to further study the functions of suilysin on pathogenesis of steptococcus suis.
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Affiliation(s)
- Qing-yu Lv
- College of Biological Science & Technology, Shenyang Agricultural University, Shenyang 11086, China.
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