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Cao S, Yihao W, Qi T, Xiong A, Liu P, Chen Y, Zeng H, Yu F, Weng J. Combination of stem cells and nerve guide conduit for the treatment of peripheral nerve injury: A meta-analysis. Muscle Nerve 2024; 69:227-238. [PMID: 38063327 DOI: 10.1002/mus.28018] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 11/22/2023] [Accepted: 11/23/2023] [Indexed: 01/18/2024]
Abstract
INTRODUCTION/AIMS Many small-sized, single-center preclinical studies have investigated the benefits of introducing stem cells into the interior of nerve conduit. The aims of this meta-analysis are to review and contrast the effects of various types of stem cells in in vivo models used to reconstruct peripheral nerve injuries (PNIs) and to assess the reliability and stability of the available evidence. METHODS A systematic search was conducted using Cochrane Library, Embase, PubMed, and Web of Science to identify studies conducted from January 1, 2000, to September 21, 2022, and investigate stem cell therapy in peripheral nerve reconstruction animal models. Studies that met the relevant criteria were deemed eligible for this meta-analysis. RESULTS Fifty-five preclinical studies with a total of 1234 animals were incorporated. Stem cells demonstrated a positive impact on peripheral nerve regeneration at different follow-up times in the forest plots of five outcome indicators: compound muscle action potential (CMAP) amplitude, latency, muscle mass ratio, nerve conduction velocity, and sciatic functional index (SFI). In most comparisons, stem cell groups showed substantial differences compared with the control groups. The superior performance of adipose-derived stem cells (ADSCs) in terms of SFI, CMAP amplitude, and latency (p < .001) was identified. DISCUSSION The findings consistently demonstrated a favorable outcome in the reconstruction process when utilizing different groups of stem cells, as opposed to control groups where stem cells were not employed.
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Affiliation(s)
- Siyang Cao
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Wei Yihao
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Ao Xiong
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Peng Liu
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Yingqi Chen
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong Province, People's Republic of China
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Wang Y, Wen C, Jing R, Yang Y, Qin Y, Qi T, Hu C, Bai X, Wu C, Pei C. Self-assembled coating with a metal-polyphenolic network for intraocular lens modification to prevent posterior capsule opacification. Biomed Mater 2024; 19:025011. [PMID: 38194710 DOI: 10.1088/1748-605x/ad1c9e] [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: 08/18/2023] [Accepted: 01/09/2024] [Indexed: 01/11/2024]
Abstract
Posterior capsule opacification (PCO) is a main complication after cataract surgery and intraocular lens (IOLs) implantation and is attributed to residual lens epithelial cells (LECs) migrating to the IOL surface and posterior capsules. IOL surface modification has been a newly-developing research filed in recent years; however, the applicability and economical acquisition of modified materials remain unsolved. In this study, we first applied a metal-polyphenolic network coating with a self-assembly technique on the IOL surface by using tannic acid (TA) combined with AlCl3, which are easily acquire and applying on the IOL surface to solve the IOL transmittance affair. Using wound healing and Transwell assay to verify AZD0364 inhibits cell migration (P< 0.05), the lipopolysaccharide-induced macrophage inflammation model to verify pterostilbene (PTE) inhibits the inflammatory reaction (P< 0.01). By optimizes its self-assembly coating parameters and calculating its drug release kinetics, we successfully loaded these two drugs on the coating, named TA (AZD0364/PTE) IOL. Its surface morphology characteristics were analyzed by scanning electron microscope, x-ray photoelectron spectrometer and water contact angle. The optical performance was carefully investigated by optical instruments and equipment (n= 3). Thein vitroresults showed that TA (AZD0364/PTE) IOL can significantly inhibit cell adhesion and acute inflammation (n= 3,P< 0.0001). Importantly, afterin vivoimplantation for 28 d with eight rabbits PCO models in two groups, the TA (AZD0364/PTE) IOL group maintained clear refracting media and decreased the inflammatory reaction compared with the original IOL group (P< 0.05). This study provides a new applicable and economical strategy for preventing PCO and offers a reference for the next generation of IOLs that benefit cataract patients.
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Affiliation(s)
- Yunqing Wang
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Chan Wen
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Ruihua Jing
- Department of Ophthalmology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Yunfei Yang
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Yazhou Qin
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Tiantian Qi
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Conghui Hu
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Xinshan Bai
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Changrui Wu
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
| | - Cheng Pei
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, People's Republic of China
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Li D, Qi T, Chen J. SAMD4A serves as a negative prognostic marker for gastric cancer patients. Tissue Cell 2023; 84:102167. [PMID: 37515967 DOI: 10.1016/j.tice.2023.102167] [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: 04/17/2023] [Revised: 07/03/2023] [Accepted: 07/13/2023] [Indexed: 07/31/2023]
Abstract
INTRODUCTION The incidence and mortality of gastric cancer remain high in the world. We aim to explore the role of SAMD4A in gastric cancer. METHODS The expression of SAMD4A was up-regulated in gastric adenocarcinoma and the expression level of SAMD4A in gastric adenocarcinoma and adjacent normal tissues was verified by RT-qPCR. Immunohistochemical showed that SAMD4A was mainly located in the cytoplasm. RESULT The result showed that the expression of SAMD4A was positively correlated with the depth of invasion, the number of lymph node metastasis, and the clinical stage in patients with gastric adenocarcinoma. Survival analysis of GEPIA database showed that the overall survival of gastric adenocarcinoma patients with positive SAMD4A expression was lower than that of the negative group. Gastric cancer cell lines with knockdown of the SAMD4A gene were used to observe the differences in cell proliferation, invasion, and migration abilities between the knockdown group and the control group. The results showed that the proliferation, invasion, and migration abilities of the SAMD4A knockdown group were both weakened compared with the control group. This study is the first to find that the expression level of SAMD4A in gastric cancer is higher than that in the adjacent group and is associated with poor prognosis of patients. SAMD4A promotes the proliferation, invasion, and migration of gastric adenocarcinoma cells. CONCLUSION This indicates that SAMD4A plays an important role in the occurrence and development of gastric cancer, and is expected to be an effective indicator for the diagnosis and evaluation of the prognosis of gastric cancer.
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Affiliation(s)
- Deqin Li
- The Second Clinical Medical College, Binzhou Medical University, 264003 Yantai, China; Department of Oncology, Yantai Yuhuangding Hospital, Affiliated Hospital of Qingdao University, 264000 Yantai, China
| | - Tiantian Qi
- Department of Oncology, Weihai Municipal Hospital, 264299 Weihai, China
| | - Jian Chen
- Department of Oncology, Yantai Yuhuangding Hospital, Affiliated Hospital of Qingdao University, 264000 Yantai, China.
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Cao S, Wei Y, Xu H, Weng J, Qi T, Yu F, Liu S, Xiong A, Liu P, Zeng H. Crosstalk between ferroptosis and chondrocytes in osteoarthritis: a systematic review of in vivo and in vitro studies. Front Immunol 2023; 14:1202436. [PMID: 37520558 PMCID: PMC10376718 DOI: 10.3389/fimmu.2023.1202436] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Purpose Recent scientific reports have revealed a close association between ferroptosis and the occurrence and development of osteoarthritis (OA). Nevertheless, the precise mechanisms by which ferroptosis influences OA and how to hobble OA progression by inhibiting chondrocyte ferroptosis have not yet been fully elucidated. This study aims to conduct a comprehensive systematic review (SR) to address these gaps. Methods Following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020, we conducted a comprehensive search of the Embase, Ovid, ProQuest, PubMed, Scopus, the Cochrane Library, and Web of Science databases to identify relevant studies that investigate the association between ferroptosis and chondrocytes in OA. Our search included studies published from the inception of these databases until January 31st, 2023. Only studies that met the predetermined quality criteria were included in this SR. Results In this comprehensive SR, a total of 21 studies that met the specified criteria were considered suitable and included in the current updated synthesis. The mechanisms underlying chondrocyte ferroptosis and its association with OA progression involve various biological phenomena, including mitochondrial dysfunction, dysregulated iron metabolism, oxidative stress, and crucial signaling pathways. Conclusion Ferroptosis in chondrocytes has opened an entirely new chapter for the investigation of OA, and targeted regulation of it is springing up as an attractive and promising therapeutic tactic for OA. Systematic review registration https://inplasy.com/inplasy-2023-3-0044/, identifier INPLASY202330044.
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Affiliation(s)
- Siyang Cao
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Yihao Wei
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Huihui Xu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Su Liu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Ao Xiong
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Peng Liu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- National & Local Joint Engineering Research Centre of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Peking University Shenzhen Hospital, Shenzhen, Guangdong, China
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Qin H, Weng J, Zhou B, Zhang W, Li G, Chen Y, Qi T, Zhu Y, Yu F, Zeng H. Magnesium Ions Promote In Vitro Rat Bone Marrow Stromal Cell Angiogenesis Through Notch Signaling. Biol Trace Elem Res 2023; 201:2823-2842. [PMID: 35870071 DOI: 10.1007/s12011-022-03364-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/15/2022] [Indexed: 11/02/2022]
Abstract
Bone defects are often caused by trauma or surgery and can lead to delayed healing or even bone nonunion, thereby resulting in impaired function of the damaged site. Magnesium ions and related metallic materials play a crucial role in repairing bone defects, but the mechanism remains unclear. In this study, we induced the angiogenic differentiation of bone marrow stromal cells (BMSCs) with different concentrations of magnesium ions. The mechanism was investigated using γ-secretase inhibitor (DAPT) at different time points (7 and 14 days). Angiogenesis, differentiation, migration, and chemotaxis were detected using the tube formation assay, wound-healing assay, and Transwell assay. Besides, we analyzed mRNA expression and the angiogenesis-related protein levels of genes by RT-qPCR and western blot. We discovered that compared with other concentrations, the 5 mM magnesium ion concentration was more conducive to forming tubes. Additionally, hypoxia-inducible factor 1 alpha (Hif-1α) and endothelial nitric oxide (eNOS) expression both increased (p < 0.05). After 7 and 14 days of induction, 5 mM magnesium ion group tube formation, migration, and chemotaxis were enhanced, and the expression of Notch pathway genes increased. Moreover, expression of the Notch target genes hairy and enhancer of split 1 (Hes1) and Hes5 (hairy and enhancer of split 5), as well as the angiogenesis-related genes Hif-1α and eNOS, were enhanced (p < 0.05). However, these trends did not occur when DAPT was applied. This indicates that 5 mM magnesium ion is the optimal concentration for promoting the angiogenesis and differentiation of BMSCs in vitro. By activating the Notch signaling pathway, magnesium ions up-regulate the downstream genes Hes1 and Hes5 and the angiogenesis-related genes Hif-1α and eNOS, thereby promoting the angiogenesis differentiation of BMSCs. Additionally, magnesium ion-induced differentiation enhances the migration and chemotaxis of BMSCs. Thus, we can conclude that magnesium ions and related metallic materials promote angiogenesis to repair bone defects. This provides the rationale for developing artificial magnesium-containing bone materials through tissue engineering.
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Affiliation(s)
- Haotian Qin
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Bo Zhou
- Department of Hand & Microsurgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Weifei Zhang
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Guoqing Li
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Yingqi Chen
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Yuanchao Zhu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China.
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China.
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China.
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, China.
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Hu C, Jing R, Wen C, Qi T, Bai X, Wang Y, Shao Y, Pei C. HNF4A negatively regulated posterior capsular opacification via transcriptional inhibition of MMP2. Curr Eye Res 2023:1-12. [PMID: 36988559 DOI: 10.1080/02713683.2023.2195138] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Purpose: Posterior capsular opacification (PCO) is the most common complication after cataract surgery. Abnormal proliferation, migration, epithelial-mesenchymal transition (EMT), and extracellular matrix (ECM) synthesis of residual lens epithelial cells (LECs) cause matrix contraction and capsule shrinkage, which are considered to be the main pathogenic mechanisms of PCO. Hepatocyte nuclear factor 4α (HNF4A) has been reported to regulate EMT in different tumours. Our objective was to investigate the role and mechanism of HNF4A in PCO.Methods: HNF4A expression was tested in PCO rat lens capsules and cell models. HNF4A was knocked down using small hairpin RNA. Knockdown and overexpression of HNF4A were achieved by lentivirus in HLE-B3 cells. Cell viability was measured by Cell Counting Kit-8 assay. Cell migration ability was evaluated by wound healing and Transwell assays. EMT markers were detected by Western blotting. Transcriptome sequencing was used to screen for downstream effectors of HNF4A. Chromatin immunoprecipitation-qPCR and a dual luciferase reporter assay were used to determine the binding of HNF4A to the MMP2 promoter region.Results: HNF4A was downregulated in PCO tissue and cell models. In vitro studies showed that HNF4A deletion facilitated cell proliferation, migration, and EMT protein marker expression in LECs. HNF4A knockdown promoted EMT and migration of LECs via MMP2. Mechanistically, HNF4A decreased MMP2 expression by binding to the MMP2 promoter region. HNF4A deletion also promoted EMT in rat lens capsules.Conclusions: We demonstrated that HNF4A inhibited EMT of LECs by directly binding to the MMP2 promoter region and inhibiting the expression of MMP2, thus leading to retardation of PCO formation and development, suggesting that HNF4A is a potential therapeutic target for PCO.
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Affiliation(s)
- Conghui Hu
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ruihua Jing
- Department of Ophthalmology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chan Wen
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tiantian Qi
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xinshan Bai
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yunqing Wang
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yongping Shao
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Cheng Pei
- Department of Ophthalmology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Wei Y, Qi T, Cao S, Zhang W, Yu F, Zeng H, Weng J. LncRNA XLOC_015548 affects the proliferation and differentiation of myoblasts via the MAPK signaling pathway. Exp Biol Med (Maywood) 2023; 248:469-480. [PMID: 36852460 PMCID: PMC10281533 DOI: 10.1177/15353702231151963] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 12/11/2022] [Indexed: 03/01/2023] Open
Abstract
In recent years, an increasing number of studies have reported that long non-coding RNAs (lncRNAs) play essential regulatory roles in myogenic differentiation. In this study, a specific LncRNA XLOC_015548 (Lnc000280) was identified. However, little research has explored its mechanism of action by constructing XLOC_015548 gene editing cell models. In this study, relevant sequences were obtained according to the RNA-seq results. Subsequently, XLOC_015548 knockdown and over-expression lentiviral vectors were constructed, and the C2C12 myoblast cell line was transfected to prepare the XLOC_015548 gene-edited myoblast model. The in vitro analysis revealed that over-expression of XLOC_015548 significantly promoted the proliferation and differentiation of myoblasts and the formation of myotubes, whereas the opposite result was obtained in the knockdown group. XLOC_015548 regulated myogenic differentiation and affected the expression of myogenic differentiation regulators such as Myod, myogenin, and MyHC. Regarding the signaling pathway, we found that XLOC_015548 correlated with the phosphorylation level of MAPK/MEK/ERK pathway proteins. And the degree of phosphorylation was positively correlated with the protein expression of myogenic differentiation regulators. In conclusion, a new gene-edited myoblast model was constructed based on the lncRNA regulator XLOC_015548. The in vitro cell experiments verified that XLOC_015548 had regulatory effects on muscle growth and myoblast differentiation. These findings provide a laboratory foundation for the clinical application of lncRNAs as regulatory factors in the treatment of disuse muscle atrophy.
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Affiliation(s)
- Yihao Wei
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shantou University Medical College, Shantou 515000, China
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Siyang Cao
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Weifei Zhang
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
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Li G, Liu S, Chen Y, Xu H, Qi T, Xiong A, Wang D, Yu F, Weng J, Zeng H. Corrigendum to 'Teriparatide ameliorates articular cartilage degradation and aberrant subchondral bone remodeling in DMM mice' [J. Orthop. Transl.] 38 (2023) 241-255]. J Orthop Translat 2023; 39:191-193. [PMID: 37187998 PMCID: PMC10175705 DOI: 10.1016/j.jot.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
[This corrects the article DOI: 10.1016/j.jot.2022.10.015.].
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Affiliation(s)
- Guoqing Li
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Su Liu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Yixiao Chen
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Huihui Xu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Ao Xiong
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Deli Wang
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- Corresponding authorDepartment of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- Corresponding authorDepartment of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China
- Corresponding authorNational & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
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Li G, Yu F, Liu S, Weng J, Qi T, Qin H, Chen Y, Wang F, Xiong A, Wang D, Gao L, Zeng H. Patient characteristics and procedural variables are associated with length of stay and hospital cost among unilateral primary total hip arthroplasty patients: a single-center retrospective cohort study. BMC Musculoskelet Disord 2023; 24:6. [PMID: 36600222 PMCID: PMC9811718 DOI: 10.1186/s12891-022-06107-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 12/20/2022] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Total hip arthroplasty (THA) is a successful treatment for many hip diseases. Length of stay (LOS) and hospital cost are crucial parameters to quantify the medical efficacy and quality of unilateral primary THA patients. Clinical variables associated with LOS and hospital costs haven't been investigated thoroughly. METHODS The present study retrospectively explored the contributors of LOS and hospital costs among a total of 452 unilateral primary THA patients from January 2019 to January 2020. All patients received conventional in-house rehabilitation services within our institute prior to discharge. Outcome parameters included LOS and hospital cost while clinical variables included patient characteristics and procedural variables. Multivariable linear regression analysis was performed to assess the association between outcome parameters and clinical variables by controlling confounding factors. Moreover, we analyzed patients in two groups according to their diagnosis with femur neck fracture (FNF) (confine THA) or non-FNF (elective THA) separately. RESULTS Among all 452 eligible participants (266 females and 186 males; age 57.05 ± 15.99 year-old), 145 (32.08%) patients diagnosed with FNF and 307 (67.92%) diagnosed with non-FNF were analyzed separately. Multivariable linear regression analysis revealed that clinical variables including surgery duration, transfusion, and comorbidity (stroke) among the elective THA patients while the approach and comorbidities (stoke, diabetes mellitus, coronary heart disease) among the confine THA patients were associated with a prolonged LOS (P < 0.05). Variables including the American Society of Anesthesiologists classification (ASA), duration, blood loss, and transfusion among the elective THA while the approach, duration, blood loss, transfusion, catheter, and comorbidities (stoke and coronary heart disease) among the confine THA were associated with higher hospital cost (P < 0.05). The results revealed that variables were associated with LOS and hospital cost at different degrees among both elective and confine THA. CONCLUSIONS Specific clinical variables of the patient characteristics and procedural variables are associated the LOS and hospital cost, which may be different between the elective and confine THA patients. The findings may indicate that evaluation and identification of detailed perioperative factors are beneficial in managing perioperative preparation, adjusting patients' anticipation, decreasing LOS, and reducing hospital cost.
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Affiliation(s)
- Guoqing Li
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Fei Yu
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Su Liu
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Jian Weng
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Tiantian Qi
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Haotian Qin
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Yixiao Chen
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Fangxi Wang
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Ao Xiong
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Deli Wang
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
| | - Liang Gao
- Center for Clinical Medicine, Huatuo Institute of Medical Innovation (HTIMI), 10787 Berlin, Germany ,Sino Euro Orthopaedics Network (SEON), Berlin, Germany
| | - Hui Zeng
- grid.440601.70000 0004 1798 0578Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036 ,grid.440601.70000 0004 1798 0578National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People’s Republic of China 518036
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Li G, Liu S, Chen Y, Xu H, Qi T, Xiong A, Wang D, Yu F, Weng J, Zeng H. Teriparatide ameliorates articular cartilage degradation and aberrant subchondral bone remodeling in DMM mice. J Orthop Translat 2022; 38:241-255. [PMID: 36514714 PMCID: PMC9731868 DOI: 10.1016/j.jot.2022.10.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 10/22/2022] [Accepted: 10/27/2022] [Indexed: 12/12/2022] Open
Abstract
Objective Knee osteoarthritis (KOA) is a highly prevalent musculoskeletal disorder characterized by degeneration of cartilage and abnormal remodeling of subchondral bone (SCB). Teriparatide (PTH (1-34)) is an effective anabolic drug for osteoporosis (OP) and regulates osteoprotegerin (OPG)/receptor activator of nuclear factor ligand (RANKL)/RANK signaling, which also has a therapeutic effect on KOA by ameliorating cartilage degradation and inhibiting aberrant remodeling of SCB. However, the mechanisms of PTH (1-34) in treating KOA are still uncertain and remain to be explored. Therefore, we compared the effect of PTH (1-34) on the post-traumatic KOA mouse model to explore the potential therapeutic effect and mechanisms. Methods In vivo study, eight-week-old male mice including wild-type (WT) (n = 54) and OPG-/- (n = 54) were investigated and compared. Post-traumatic KOA model was created by destabilization of medial meniscus (DMM). WT mice were randomly assigned into three groups: the sham group (WT-sham; n = 18), the DMM group (WT-DMM; n = 18), and the PTH (1-34)-treated group (WT-DMM + PTH (1-34); n = 18). Similarly, the OPG-/- mice were randomly allocated into three groups as well. The designed mice were executed at the 4th, 8th, and 12th weeks to evaluate KOA progression. To further explore the chondro-protective of PTH (1-34), the ATDC5 chondrocytes were stimulated with different concentrations of PTH (1-34) in vitro. Results Compared with the WT-sham mice, significant wear of cartilage in terms of reduced cartilage thickness and glycosaminoglycan (GAG) loss was detected in the WT-DMM mice. PTH (1-34) exhibited cartilage-protective by alleviating wear, retaining the thickness and GAG contents. Moreover, the deterioration of the SCB was alleviated and the expression of PTH1R/OPG/RANKL/RANK were found to increase after PTH (1-34) treatment. Among the OPG-/- mice, the cartilage of the DMM mice displayed typical KOA change with higher OARSI score and thinner cartilage. The damage of the cartilage was alleviated but the abnormal remodeling of SCB didn't show any response to the PTH (1-34) treatment. Compared with the WT-DMM mice, the OPG-/--DMM mice caught more aggressive KOA with thinner cartilage, sever cartilage damage, and more abnormal remodeling of SCB. Moreover, both the damaged cartilage from the WT-DMM mice and the OPG-/--DMM mice were alleviated but only the deterioration of SCB in WT-DMM mice was alleviated after the administration of PTH (1-34). In vitro study, PTH (1-34) could promote the viability of chondrocytes, enhance the synthesis of extracellular matrix (ECM) (AGC, COLII, and SOX9) at the mRNA and protein level, but inhibit the secretion of inflammatory cytokines (TNF-α and IL-6). Conclusion Both wear of the cartilage was alleviated and aberrant remodeling of the SCB was inhibited in the WT mice, but only the cartilage-protective effect was observed in the OPG-/- mice. PTH (1-34) exhibited chondro-protective effect by decelerating cartilage degeneration in vivo as well as by promoting the proliferation and enhancing ECM synthesis of chondrocytes in vitro. The current investigation implied that the rescue of the disturbed SCB is dependent on the regulation of OPG while the chondro-protective effect is independent of modulation of OPG, which provides proof for the treatment of KOA. The translational potential of this article Systemic administration of PTH (1-34) could exert a therapeutic effect on both cartilage and SCB in different mechanisms to alleviate KOA progression, which might be a novel therapy for KOA.
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Key Words
- AB, Alican blue
- ADAMTS5, ADAM Metallopeptidase with Thrombospondin Type 1 Motif 5
- AGC, Aggrecan
- AGC, aggrecan
- ANOVA, one-way analysis of variance
- ARRIVE, Animal Research: Reporting of In Vivo Experiments
- BMD, bone mineral density
- BV/TV, bone volume fraction
- CCK-8, cell counting kit-8
- CLSM, confocal laser scanning microscope
- COLII, Type II collagen
- COLX, Type X collagen
- Cartilage
- DMEM, Dulbecco's Modified Eagle's Medium
- DMM, destabilization of medical meniscus
- ECM, extracellular matrix
- EDTA, ethylene diamine tetra acetic acid
- ELISA, enzyme-linked immunosorbent assay
- EdU, 5-ethynyl-2′-deoxyuridine
- FBS, fatal bovine serum
- GAG, glycosaminoglycan
- GAPDH, glyceraldehyde-3-phosphate dehydrogenase
- HE, hematoxylin and eosin
- HPLC, High Performance Liquid Chromatography
- IL-1β, Interleukin-1β
- IL-6, Interleukin-6
- KOA, knee osteoarthritis
- Knee osteoarthritis
- MMP13, Matrix Metallopeptidase 13
- MT, masson's trichrome
- Micro-CT, microcomputer tomography
- NCBI, National Center for Biotechnology Information
- OARSI, Osteoarthritis Research Society International
- OD, optical density
- OP, osteoporosis
- OPG, osteoprotegerin
- OPG−/−, osteoprotegerin-knockout
- Osteoprotegerin (OPG)
- PBS, phosphate buffer solution
- PCR, polymerase chain reaction
- PTH (1–34), Teriparatide
- ROI, region of interest
- RT-qPCR, quantitative reverse transcription polymerase chain reaction
- S.I, subcutaneous injection
- SCB, subchondral bone
- SMI, structure model index
- SOFG, Safranin O-fast green
- SOX9, SRY-Box Transcription Factor 9
- Subchondral bone
- TB, toluidine blue O
- TNF-α, tumor necrosis factor-α
- Tb.N, trabecular number
- Tb.Th, trabecular thickness
- Teriparatide (PTH (1–34))
- WT, wild type
- nM, nMol/L
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Affiliation(s)
- Guoqing Li
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Su Liu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Yixiao Chen
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Huihui Xu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Tiantian Qi
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Ao Xiong
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Deli Wang
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
| | - Fei Yu
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- Corresponding author. Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
| | - Jian Weng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- Corresponding author. Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
| | - Hui Zeng
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China, 518036
- Corresponding author. National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, PR China.
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11
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Wen C, Wang C, Hu C, Qi T, Jing R, Wang Y, Zhang M, Shao Y, Pei C. REPS2 downregulation facilitates FGF-induced adhesion and migration in human lens epithelial cells through FAK/Cdc42 signaling and contributes to posterior capsule opacification. Cell Signal 2022; 97:110378. [PMID: 35690292 DOI: 10.1016/j.cellsig.2022.110378] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/02/2022] [Accepted: 06/03/2022] [Indexed: 11/28/2022]
Abstract
Posterior capsular opacification (PCO) can cause postoperative visual loss after cataract surgery. Residual human lens epithelial cell (HLEC) proliferation, migration, epithelial-mesenchymal transition (EMT) and synthesis of extracellular matrix (ECM) are the entitative reasons for PCO. Low expression of Ral-binding protein 1-associated Eps domain-containing 2 (REPS2) and high levels of basic fibroblast growth factor (b-FGF) were observed in the lens and postoperative aqueous humor of cataract patients. REPS2 was identified as a negative regulator in growth factor signaling; however, its function in HLECs is unknown. This was first investigated in the present study by evaluating REPS2 expression in anterior lens capsules from cataract patients, a mouse cataract model, and HLE-b3 cells. The biological function of REPS2 in HLE-B3 cells was assessed by REPS2 silencing and Cell Counting Kit 8, wound healing, Transwell migration, F-actin staining, G-protein pulldown and western blot assays. In the present study, REPS2 was significantly downregulated in human and mouse cataract capsules and H2O2-treated HLE-B3 cells. REPS2 knockdown increased fibronectin, type I collagen, and α-smooth muscle actin expression levels and stimulated HLECs proliferation and migration; these effects were enhanced by FGF treatment and accompanied with focal adhesion kinase (FAK) phosphorylation, cell division cycle 42 (Cdc42) activation, focal adhesion protein upregulation, and F-actin cytoskeleton reorganization. However, treatment with the FAK inhibitor PF573228 abolished these effects. Thus, REPS2 downregulation in cataract HLECs induces their proliferation and facilitates FGF-induced ECM synthesis, EMT, cell adhesion and migration by activating FAK/Cdc42 signaling, which may underlie PCO pathogenesis.
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Affiliation(s)
- Chan Wen
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Chen Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China
| | - Conghui Hu
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Tiantian Qi
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Ruihua Jing
- Department of Ophthalmology, second affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Yunqing Wang
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Ming Zhang
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China
| | - Yongping Shao
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China.
| | - Cheng Pei
- Department of Ophthalmology, first affiliated hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi, PR China.
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Qi T, Jing R, Ma B, Hu C, Wen C, Shao Y, Pei C. The E3 Ligase RNF157 Inhibits Lens Epithelial Cell Apoptosis by Negatively Regulating p53 in Age-Related Cataracts. Invest Ophthalmol Vis Sci 2022; 63:11. [PMID: 35435923 PMCID: PMC9034709 DOI: 10.1167/iovs.63.4.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Purpose Age-related cataract (ARC) is a major cause of vision impairment worldwide. The E3 ubiquitin ligase RING finger protein 157 (RNF157) is involved in regulating cell survival and downregulated in human cataractous lens samples. However, the function of RNF157 in cataracts remains unclear. This study aimed to determine the role of RNF157 in ARC. Methods Real-time polymerase chain reaction (PCR) and Western blotting were used to analyze the expression of RNF157 in clinical lens capsules, rat cataract models, and oxidative stress cell models. Western blot analysis and flow cytometry were used to evaluate cell apoptosis. Co-IP assay, protein stability assay, and ubiquitination assay were used to detect the interaction between RNF157 and its substrate p53. Results The expression of RNF157 was downregulated in human cataract samples, UVB-induced rat cataract model, and H2O2-treated human lens epithelial cells (LECs). Ectopic expression of RNF157 protected LECs from H2O2-induced apoptosis. In contrast, knockdown of RNF157 enhanced oxidative stress-induced apoptotic cell death. Moreover, silence of RNF157 in the rat ex vivo lens model exacerbated lens opacity. Mechanistically, RNF157 causes ubiquitination and degradation of the tumor antigen p53. Overexpression of p53 eliminated the antiapoptotic effects of RNF157, whereas p53 knockdown rescued RNF157 silencing-induced cell death. Conclusions Our findings revealed that reduced RNF157 expression promoted LEC apoptosis by upregulating p53 in cataracts, suggesting that the regulation of RNF157 expression may serve as a potential therapeutic strategy for cataracts.
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Affiliation(s)
- Tiantian Qi
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ruihua Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bo Ma
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Conghui Hu
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chan Wen
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yongping Shao
- Center for Translational Medicine, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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13
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Zhu J, Wu J, Liang Z, Mo C, Qi T, Liang S, Lian T, Qiu R, Yu X, Tang X, Wu B. Interactions between the breast tissue microbiota and host gene regulation in nonpuerperal mastitis. Microbes Infect 2022; 24:104904. [PMID: 35331909 DOI: 10.1016/j.micinf.2021.104904] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/08/2021] [Accepted: 10/17/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Nonpuerperal mastitis (NPM) causes considerable psychological distress in females, since it is difficult to diagnose and treat. A spectrum of etiological factors can lead to NPM. However, the pathogenesis of NPM remains unclear. Here, we aimed to dissect the role of host gene-microbe interactions in NPM. METHODS We compared the breast tissue microbiome between NPM patients and controls using 16S rRNA sequencing. We also compared the gut microbiome between NPM patients and healthy controls. Moreover, we investigated whether the breast tissue microbiome was associated with an altered gut microbiome in patients with NPM. We analyzed differentially expressed genes in inflammatory tissues of mammary gland from patients with NPM and normal mammary gland tissues from patients with benign and non-infectious breast disease by RNA-sequencing (RNA-seq). Lastly, we explored the association of specific bacterial taxa with differential expression of immune-related genes and differences in infiltrating immune cells. RESULTS The breast tissue microbiome from NPM and controls showed significant differences in community composition. The breast tissue shared a relatively small proportion of bacterial communities with the gut in patients with NPM. Ruminococcus (family Ruminococcaceae) of breast tissue was positively correlated with the differentially expression of immune-related genes between NPM patients and controls, including antigen processing and presentation genes (ICAM1, LGMN, THBS1, TAP1, HSPA1B and HSPA1A), cytokine receptor gene IL15RA, and chemokine gene CCN1. Rhizobium of breast tissue was negatively correlated with the differentially expression of the antigen processing and presentation gene HSPA6 between NPM patients and controls. We also found that Ruminococcus (family Ruminococcaceae), Coprococcus, and Clostridium of breast tissue positively correlated with the difference of CD8+ T cells between NPM patients and controls. CONCLUSIONS We preliminarily explored the potential role of host-microbe interactions in NPM. We demonstrate cross-talk between the breast tissue microbiome and the gut microbiome in patients with NPM. We suggest that NPM microbiome composition influences the immune microenvironment of the disease by affecting the transcriptome. This is an exploratory study and further investigation of host-microbe interactions and its potential mechanism in NPM development are warranted.
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Affiliation(s)
- Jia Zhu
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Jie Wu
- The Second Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Zhongzeng Liang
- Department of Breast Surgery, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, Guangdong, China
| | - Changgan Mo
- Hechi Hospital Affiliated to Youjiang Medical University for Nationalities, Hechi, 547000, Guangxi, China; The First Affiliated Hospital of Jinan University, Guangzhou, 510000, Guangdong, China
| | - Tiantian Qi
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Siyuan Liang
- Fudan University Shanghai Cancer Center, Shanghai, 200032, China
| | - Tao Lian
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Rongbin Qiu
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Xiaoting Yu
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China
| | - Xiuge Tang
- Hechi Hospital Affiliated to Youjiang Medical University for Nationalities, Hechi, 547000, Guangxi, China.
| | - Biao Wu
- Department of Breast Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330000, Jiangxi, China.
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Zhang A, Lu Z, Xu Y, Qi T, Li W, Zhang L, Cui Z. The structure of exopolyphosphatase (PPX) from Porphyromonas gingivalis in complex with substrate analogs and magnesium ions reveals the basis for polyphosphate processivity. J Struct Biol 2021; 213:107767. [PMID: 34214602 DOI: 10.1016/j.jsb.2021.107767] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 10/21/2022]
Abstract
The enzymes exopolyphosphatase/guanosine pentaphosphate phosphohydrolase (PPX/GppA) play important roles in the bacterial stringent response. PPX degrades inorganic polyphosphate (polyP), a polymer composed of a few to hundreds of phosphate residues supporting cell survival in the stationary phase. The crystal structure of PPX from Porphyromonas gingivalis (PgPPX) in complex with catalytic magnesium ions and several sulfate ions was solved. PgPPX contained two domains and represented a "closed" configuration. Four sulfate ions forming a linear dispersed chain were observed in the aqueduct of the PPX dimer, which the long polyP chain most likely occupied. The side chain of R255 stretched into the cavity where polyP could be located, obstructing the entrance of larger substrates such as NTP and NDP. This study provided the first view into the structure of the PPX/GppA homolog in complex with magnesium ions and substrate analogs and explained how PgPPX implemented its functionality.
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Affiliation(s)
- Aili Zhang
- Food and Pharmacy College, Xuchang University, China; Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety of Henan Province, Xuchang University, China
| | - Zuokun Lu
- Food and Pharmacy College, Xuchang University, China; Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety of Henan Province, Xuchang University, China.
| | - Yanhao Xu
- Food and Pharmacy College, Xuchang University, China
| | - Tiantian Qi
- Food and Pharmacy College, Xuchang University, China
| | - Wenwen Li
- Food and Pharmacy College, Xuchang University, China
| | - Liang Zhang
- Food and Pharmacy College, Xuchang University, China; Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety of Henan Province, Xuchang University, China
| | - Zhaohui Cui
- Food and Pharmacy College, Xuchang University, China; Key Laboratory of Biomarker Based Rapid-detection Technology for Food Safety of Henan Province, Xuchang University, China
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Jiang Q, Liu J, Qi T, Liu Y. Enhanced visible-light photocatalytic activity and antibacterial behaviour on fluorine and graphene synergistically modified TiO 2 nanocomposite for wastewater treatment. Environ Technol 2021; 43:1-14. [PMID: 34048324 DOI: 10.1080/09593330.2021.1936198] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 05/21/2021] [Indexed: 06/12/2023]
Abstract
The photocatalytic reduction of methylene blue was recognized as an economical and effective way for dye removal. To enhance photocatalytic activity under visible-light condition, fluorine and graphene synergistically modified TiO2 (F-TiO2/rGO) nanocomposites were successfully prepared by sol-gel method. Characterization results showed F ions played an essential role in the formation of TiO2 nanoparticles. Between the fluorine sources selected, NH4F was more optimal than NaF doping on the grounds that the existence of Na+ ion was an inevitable factor for the production of brookite. F-TiO2/rGO nanocomposite obtained by adding 5%at NH4F significantly narrowed the bandgap energy from approximately 3.17 to 2.41 eV. Box-Behnken design was adopted to optimize the MB photo-degradation process by F(5%NH4F)-TiO2/rGO nanocomposites under different reaction conditions. Moreover, the antibacterial behaviour of this novel material was also investigated by Escherichia coli (E. coli) bacteria under visible light. The morphology changes of E. coli cells were directly observed by field emission scanning electron microscope and further confirmed that the excellent sterilization of F-TiO2/rGO nanocomposites resulted from the active species. The outstanding photocatalytic performance and antibacterial behaviour of F-TiO2/rGO nanocomposite was attributed to the synergistic effect of photocatalytic redox reaction and adsorption. These results indicated F(5%NH4F)-TiO2/rGO nanocomposite was a promising antibacterial photo-adsorbent for wastewater treatment improvement.
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Affiliation(s)
- Qiwen Jiang
- School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Jialu Liu
- School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Tiantian Qi
- Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - Yanhua Liu
- School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an, People's Republic of China
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16
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Jing R, Ma B, Qi T, Hu C, Liao C, Wen C, Shao Y, Pei C. Long Noncoding RNA OIP5-AS1 Promotes Cell Apoptosis and Cataract Formation by Blocking POLG Expression Under Oxidative Stress. Invest Ophthalmol Vis Sci 2021; 61:3. [PMID: 33006594 PMCID: PMC7545078 DOI: 10.1167/iovs.61.12.3] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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] [Indexed: 02/07/2023] Open
Abstract
Purpose Cataract, a clouding of the intraocular lens, is the leading cause of blindness. The lens-expressed long noncoding RNA OIP5-AS1 was upregulated in lens epithelial cells from patients with cataracts, suggesting its pathogenic role in cataracts. We investigated the regulatory role of OIP5-AS1 in the development of cataracts as well as potential RNA binding proteins, downstream target genes, and upstream transcription factors. Methods Clinical capsules and ex vivo and in vitro cataract models were used to test OIP5-AS1 expression. Cell apoptosis was detected using Western blots, JC-1 staining, and flow cytometry. Ribonucleoprotein immunoprecipitation-qPCR was performed to confirm the interaction of OIP5-AS1 and POLG. Chromatin immunoprecipitation-qPCR was used to determine the binding of TFAP2A and the OIP5-AS1 promoter region. Results OIP5-AS1 was upregulated in cataract lenses and B3 cells under oxidative stress. OIP5-AS1 knockdown protected B3 cells from H2O2-induced apoptosis and alleviated lens opacity in the ex vivo cataract model. HuR functioned as a scaffold carrying OIP5-AS1 and POLG mRNA and mediated the decay of POLG mRNA. POLG was downregulated in the cataract lens and oxidative-stressed B3 cells, and POLG depletion decreased the mtDNA copy number and MMP, increased reactive oxygen species production, and sensitized B3 cells to oxidative stress-induced apoptosis. POLG overexpression reversed these effects. TFAP2A bound the OIP5-AS1 promoter and contributed to OIP5-AS1 expression. Conclusions We demonstrated that OIP5-AS1, activated by TFAP2A, contributed to cataract formation by inhibiting POLG expression mediated by HuR, thus leading to increased apoptosis of lens epithelial cells and aggravated lens opacity, suggesting that OIP5-AS1 is a potential target for cataract treatment.
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Affiliation(s)
- Ruihua Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Bo Ma
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Tiantian Qi
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Conghui Hu
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chongbing Liao
- Center for Translational Medicine, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chan Wen
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yongping Shao
- Center for Translational Medicine, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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17
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Iqbal MF, Liu S, Zhu J, Zhao L, Qi T, Liang J, Luo J, Xiao X, Fan X. Limited aerenchyma reduces oxygen diffusion and methane emission in paddy. J Environ Manage 2021; 279:111583. [PMID: 33187783 DOI: 10.1016/j.jenvman.2020.111583] [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: 06/28/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Greenhouse gasses (GHG) emission from the agricultural lands is a serious threat to the environment. Plants such as rice (Oryza sativa L.) that are cultivated in submerged conditions (paddy field) contribute up to 19% of CH4 emission from agricultural lands. Such plants have evolved lysigenous aerenchyma in their root system which facilitates the exchange of O2 and GHG between aerial parts of plant and rhizosphere. Currently, the regulation of GHG and O2 via aerenchyma formation is poorly understood in plants, especially in rice. Here, a reverse genetic approach was employed to reduce the aerenchyma formation by analyzing two mutants i.e., oslsd1.1-m12 and oslsd1.1-m51 generated by Tos17 and T-DNA insertion. The wild-type (WT) and the mutants were grown in paddy (flooded), non-paddy and hydroponic system to assess phenotypic traits including O2 diffusion, GHG emission and aerenchyma formation. The mutants exhibited significant reductions in several morphophysiological traits including 20-60% aerenchyma formation at various distances from the root apex, 25% root development, 50% diffusion of O2 and 27-36% emission of methane (CH4) as compared to WT. The differential effects of the oslsd1.1 mutants in aerenchyma-mediated CH4 mitigation were also evident in the diversity of (pmoA, mcrA) methanotrophs in the rhizosphere. Our results indicate the novel pathway in which reduced aerenchyma in rice is responsible for the mitigation of CH4, diffusion of O2 and the root growth in rice. Limited aerenchyma mediated approach to mitigate GHG specially CH4 mitigation in agriculture is helpful technique for sustainable development.
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Affiliation(s)
- Muhammad Faseeh Iqbal
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shuhua Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jingwen Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Limei Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tiantian Qi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jing Liang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xin Xiao
- College of Resource and Environment, Anhui Science and Technology University, Fengyang, 233100, China
| | - Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China; Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Ministry of Agriculture, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
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18
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Qi T, Weng J, Yu F, Zhang W, Li G, Qin H, Tan Z, Zeng H. Insights into the Role of Magnesium Ions in Affecting Osteogenic Differentiation of Mesenchymal Stem Cells. Biol Trace Elem Res 2021; 199:559-567. [PMID: 32449009 DOI: 10.1007/s12011-020-02183-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/30/2020] [Indexed: 12/13/2022]
Abstract
Bone marrow mesenchymal stem cells (MSCs) are multipotent stem cells with the ability to differentiate into bone-producing cells, which is essential for bone formation. Magnesium biomedical materials, such as biodegradable matters with osteoinductive properties, play a vital role in the osteogenic differentiation of MSCs. International and Chinese studies have shown that magnesium ions, which are produced by biodegradation, mainly achieve this effect by regulating the expression of genes and proteins associated with osteogenesis, activating multiple signal pathways, elevating autophagic activities, and adjusting the pH in the microenvironment. It is of great significance to study the regulatory mechanisms and identify the optimal conditions that how magnesium ions promote osteogenic differentiation of MSCs. In this study, we summarized the regulatory mechanisms noted above.
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Affiliation(s)
- Tiantian Qi
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Jian Weng
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Fei Yu
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Weifei Zhang
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Guoqing Li
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Haotian Qin
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Zhen Tan
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China
| | - Hui Zeng
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China.
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, People's Republic of China.
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Zeng F, Li S, Yang G, Luo Y, Qi T, Liang Y, Yang T, Zhang L, Wang R, Zhu L, Li H, Xu X. Design, synthesis, molecular modeling, and biological evaluation of acrylamide derivatives as potent inhibitors of human dihydroorotate dehydrogenase for the treatment of rheumatoid arthritis. Acta Pharm Sin B 2020; 11:S2211-3835(20)30759-0. [PMID: 33078092 PMCID: PMC7558257 DOI: 10.1016/j.apsb.2020.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 07/01/2020] [Revised: 09/17/2020] [Accepted: 09/28/2020] [Indexed: 01/15/2023] Open
Abstract
Human dihydroorotate dehydrogenase (DHODH) is a viable target for the development of therapeutics to treat cancer and immunological diseases, such as rheumatoid arthritis (RA), psoriasis and multiple sclerosis (MS). Herein, a series of acrylamide-based novel DHODH inhibitors as potential RA treatment agents were designed and synthesized. 2-Acrylamidobenzoic acid analog 11 was identified as the lead compound for structure-activity relationship (SAR) studies. The replacement of the phenyl group with naphthyl moieties improved inhibitory activity significantly to double-digit nanomolar range. Further structure optimization revealed that an acrylamide with small hydrophobic groups (Me, Cl or Br) at the 2-position was preferred. Moreover, adding a fluoro atom at the 5-position of the benzoic acid enhanced the potency. The optimization efforts led to potent compounds 42 and 53‒55 with IC50 values of 41, 44, 32, and 42 nmol/L, respectively. The most potent compound 54 also displayed favorable pharmacokinetic (PK) profiles and encouraging in vivo anti-arthritic effects in a dose-dependent manner.
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Key Words
- AML, acute myeloid leukemia
- Acrylamide derivatives
- BPO, benzoyl peroxide
- CIA, collagen-induced arthritis
- DCE, 1,2-dichloroethane
- DCM, dichloromethane
- DHODH
- DHODH inhibitors
- DHODH, dihydroorotate dehydrogenase
- DMAP, 4-dimethylaminopyridine
- DMARDs, disease-modifying antirheumatic drugs
- DMF, N,N-dimethylformamide
- DMSO, dimethyl sulfoxide
- De novo pyrimidine biosynthesis
- EA, ethyl acetate
- FMN, flavin mononucleotide
- HPLC, high performance liquid chromatography
- HRMS, high-resolution mass spectrometry
- IBD, inflammatory bowel disease
- LAH, lithium aluminium hydride
- LCMS, liquid chromatography mass spectrometry
- MS, multiple sclerosis
- MeOH, methanol
- NBS, N-bromosuccinimide
- NCS, N-chlorosuccinimide
- NSAIDs, non-steroidal anti-inflammatory drugs
- PDA, photodiode array detector
- PE, petroleum ether
- PK, pharmacokinetic
- PhMe, toluene
- RA, rheumatoid arthritis
- Rheumatoid arthritis
- SEL, systemic lupus erythematosus
- TEA, triethylamine
- TFA, trifluoroacetic acid
- THF, tetrahydrofuran
- TsCl, tosyl chloride
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Affiliation(s)
- Fanxun Zeng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Shiliang Li
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Guantian Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Yating Luo
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Tiantian Qi
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Yingfan Liang
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Tingyuan Yang
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Letian Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Rui Wang
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Lili Zhu
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
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20
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Qi T, Jing R, Wen C, Hu C, Wang Y, Pei C, Ma B. Interleukin-6 promotes migration and extracellular matrix synthesis in retinal pigment epithelial cells. Histochem Cell Biol 2020; 154:629-638. [PMID: 32997263 DOI: 10.1007/s00418-020-01923-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2020] [Indexed: 01/05/2023]
Abstract
Proliferative vitreoretinopathy (PVR) is the most common cause of surgical failure in the rhegmatogenous retinal detachment (RD) treatment. Retinal pigment epithelial (RPE) cell proliferation, migration, and the synthesis of extracellular matrix (ECM) are intrinsic to the formation of a PVR membrane. High level of interleukin-6 (IL-6) has been found in the vitreous of PVR patients, while the role of IL-6 in RPE cells remaining further characterized. In the present study, we evaluated the potential regulatory effects of IL-6 on cell migration, ECM components, and transforming growth factor β2 (TGF-β2) expression in RPE cells. Furthermore, cell counting kit-8 (CCK‑8) assay was used to investigate cell proliferation activity. We found that IL-6 promoted fibronectin (Fn) and type I collagen (COL-1), TGF-β2 expression in RPE cells, also stimulate RPE cell migration effectively. Moreover, the induction of IL-6 activated the Janus kinase/signal transducers and activators of transcription (JAK/STAT3) and the nuclear factor kappa-B (NF-κB) signaling pathways significantly. Simultaneously, both JAK/STAT3 and NF-κB pathways inhibitors, WP1066 and BAY11-7082, alleviated IL-6-induced biological effects, respectively. However, it was noted that IL-6 had little effect on α-smooth muscle actin (α-SMA) expression. Collectively, our results reveal that IL-6 promotes RPE cell migration and ECM synthesis via activating JAK/STAT3 and NF-κB signaling pathways, which may play a crucial role in PVR formation.
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Affiliation(s)
- Tiantian Qi
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Ruihua Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Chan Wen
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Conghui Hu
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Yunqing Wang
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
| | - Bo Ma
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
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21
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Ji YH, Qi T, Ding Y, Ruan Q, Ma YP. Pathogenic analysis of suspected COVID-19 patients in a SARS-CoV-2 non-epidemic area of China. Eur Rev Med Pharmacol Sci 2020; 24:9196-9201. [PMID: 32965014 DOI: 10.26355/eurrev_202009_22871] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study is to find the distributions of pathogens in 164 suspected COVID-19 patients from the outpatient clinic of Shenjing Hospital of China Medical University from 24th January, 2020, to 29th February of 2020. PATIENTS AND METHODS 164 COVID-19 suspected patients were from the Shengjing Hospital of China Medical University. Oropharyngeal swab specimens were acquired by respiratory doctors under standardized conditions. Specific nucleic acids of SARS-CoV-2, influenza A and B, respiratory syncytial virus A and B, adenovirus, parainfluenza virus, along with pneumonic mycoplasma were detected by real-time fluorescence PCR. Symptomatic, epidemiologic, laboratory and radiological data of the patients were obtained from the electronic medical record system of our hospital. RESULTS Among the 164 patients, 3 were positive for SARS-CoV-2, 15 were positive for other respiratory viruses and 16 were positive for pneumonic mycoplasma. Of the positive patients above, 1 patient was co-infected with SARS-CoV-2 and adenovirus, and 1 was co-infected with influenza B and pneumonic mycoplasma. The 3 SARS-CoV-2 infected patients were clinically diagnosed as COVID-19 because they meet the diagnostic criteria listed in "Chinese Clinical Guidance for COVID-19 Pneumonia diagnosis and treatment", including epidemic history, symptom and pathogenic detection, as well as abnormalities of the laboratory and radiological data. However, the clinical characteristics of COVID-19 patients were non-specific compared to those of the patients infected with other respiratory viruses. CONCLUSIONS The endemic common respiratory pathogens are more prevalent than SARS-CoV-2 in the SARS-CoV-2 non-epidemic areas of this research. Detection of the pathogen is the unique means for definite COVID-19 diagnosis.
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Affiliation(s)
- Y-H Ji
- Virology Laboratory, Shengjing Hospital of China Medical University, Liaoning, China.
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Li C, Cao M, Qi T, Ye X, Ma L, Pan W, Luo J, Chen P, Liu J, Zhou J. The association of bisphenol A exposure with premature ovarian insufficiency: a case-control study. Climacteric 2020; 24:95-100. [PMID: 32668991 DOI: 10.1080/13697137.2020.1781078] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND A few epidemiological investigations and animal studies have demonstrated that bisphenol A (BPA) may affect female reproductive health. However, no epidemiologic study has investigated the relationship between BPA exposure and the risk of premature ovarian insufficiency (POI). METHODS In this case-control study, urinary concentrations of BPA and serum levels of reproductive hormone were measured. Associations between BPA concentrations and the risk of POI and POI-related hormone levels were estimated. RESULTS Among BPA quartiles, no obvious association was found between BPA levels and the risk of POI (p = 0.603). Although the adjusted odds ratio (OR) of POI was slightly increased for participants in the highest BPA concentration quartile, the association was not statistically significant (OR = 1.282, 95% confidence interval [CI] 0.615-2.049 for the highest vs. lowest quartile, p = 0.508). Although follicle stimulating hormone (FSH) and anti-Mullerian hormone (AMH) levels showed no tendency of an association with BPA (p = 0.941 and p = 0.876 for FSH and AMH, respectively), the highest quartile of luteinizing hormone was significantly positively associated with BPA levels (OR = 1.333, 95% CI 0.986-1.803, p = 0.042). CONCLUSIONS The urinary concentrations of BPA determined in this study were consistent with the range of exposure currently observed in Chinese women. However, BPA exposure at a relatively low level is not associated with POI in Chinese women. Further epidemiological studies are needed to confirm our findings.
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Affiliation(s)
- C Li
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - M Cao
- MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - T Qi
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - X Ye
- College of Medical Technology, Zhejiang Chinese Medical University, Hangzhou, China
| | - L Ma
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - W Pan
- MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - J Luo
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - P Chen
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - J Liu
- MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - J Zhou
- Department of Gynecology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Gu X, Gao Y, Yan Y, Marks M, Zhu L, Lu H, Guan Z, Shi M, Ni L, Peng R, Zhao W, Wu J, Qi T, Lu S, Qian Y, Gong W, Zhou P. The importance of proper and prompt treatment of ocular syphilis: a lesson from permanent vision loss in 52 eyes. J Eur Acad Dermatol Venereol 2020; 34:1569-1578. [PMID: 32163642 PMCID: PMC7496700 DOI: 10.1111/jdv.16347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 02/25/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Ocular involvement can occur at any stage of syphilis. Prompt diagnosis and proper treatment of ocular syphilis are vital to avoid long-term consequences. OBJECTIVES To describe the risk factors for ocular syphilis and clinical features of blindness caused by syphilis. METHODS We report risk factors for ocular syphilis amongst patients seen at the Shanghai Skin Disease Hospital between October 2009 and October 2017. We identify patients with ocular syphilis resulting in blindness and report the clinical characteristics, laboratory findings and treatment outcomes of these patients. RESULTS A total of 8310 new cases of syphilis were seen, of which 213 patients had ocular disease and 50 patients had blindness due to syphilis. Increasing age and higher RPR titres were associated with ocular involvement but there was no association with HIV status. Blindness in syphilis was restricted predominantly to patients with optic nerve involvement and not patients with isolated uveitis. Fifty patients (and a total of 67 eyes) met the WHO definition of blindness prior to treatment for syphilis. At the end of follow-up, vision had improved in 24 of 67 eyes (35.8%) after treatment. Successful treatment of uveitis was associated with the best improvement in visual acuity, whilst patient with underlying optic atrophy prior to treatment had the worst visual outcome. CONCLUSIONS Ocular involvement is an important manifestation of syphilis which may result in blindness. Our data demonstrate outcomes for ocular syphilis are poor if detected late; early recognition and diagnosis is therefore vital to avoid permanent visual loss.
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Affiliation(s)
- X. Gu
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - Y. Gao
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - Y. Yan
- Department of OphthalmologyRenji HospitalSchool of MedicineJiaotong UniversityShanghaiChina
| | - M. Marks
- Department of Clinical ResearchLondon School of Hygiene & Tropical MedicineLondonUK
| | - L. Zhu
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - H. Lu
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - Z. Guan
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - M. Shi
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - L. Ni
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - R. Peng
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - W. Zhao
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - J. Wu
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - T. Qi
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - S. Lu
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - Y. Qian
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - W. Gong
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
| | - P. Zhou
- Sexually Transmitted Disease InstituteShanghai Skin Disease HospitalSchool of MedicineTongji UniversityShanghaiChina
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Jing R, Qi T, Wen C, Yue J, Wang G, Pei C, Ma B. Interleukin-2 induces extracellular matrix synthesis and TGF-β2 expression in retinal pigment epithelial cells. Dev Growth Differ 2019; 61:410-418. [PMID: 31608440 PMCID: PMC6899885 DOI: 10.1111/dgd.12630] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 08/03/2019] [Revised: 08/23/2019] [Accepted: 09/09/2019] [Indexed: 12/13/2022]
Abstract
Macular fibrosis is a vital obstacle of vision acuity improvement of age‐related macular degeneration patients. This study was to investigate the effects of interleukin 2 (IL‐2) on epithelial‐mesenchymal transition (EMT), extracellular matrix (ECM) synthesis and transforming growth factor β2 (TGF‐β2) expression in retinal pigment epithelial (RPE) cells. 10 μg/L IL‐2 was used to induce fibrosis in RPE cells for various times. Western blot was used to detect the EMT marker α‐smooth muscle actin (α‐SMA), ECM markers fibronectin (Fn) and type 1 collagen (COL‐1), TGF‐β2, and the activation of the JAK/STAT3 and NF‐κB signaling pathway. Furthermore, JAK/STAT3 and NF‐κB signaling pathways were specifically blocked by WP1066 or BAY11‐7082, respectively, and the expression of α‐SMA, COL‐1, Fn and TGF‐β2 protein were detected. Wound healing and Transwell assays were used to measure cell migration ability of IL‐2 with or without WP1066 or BAY11‐7082. After induction of IL‐2, the expressions of Fn, COL‐1, TGF‐β2 protein were significantly increased, and this effect was correlated with IL‐2 treatment duration, while α‐SMA protein expression did not change significantly. Both WP1066 and BAY11‐7082 could effectively downregulate the expression of Fn, COL‐1 and TGF‐β2 induced by IL‐2. What's more, both NF‐κB and JAK/STAT3 inhibitors could suppress the activation of the other signaling pathway. Additionally, JAK/STAT3 inhibitor WP1066 and NF‐κB inhibitor BAY 11‐7082 could obviously decrease RPE cells migration capability induced by IL‐2. IL‐2 promotes cell migration, ECM synthesis and TGF‐β2 expression in RPE cells via JAK/STAT3 and NF‐κB signaling pathways, which may play an important role in proliferative vitreoretinopathy.
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Affiliation(s)
- Ruihua Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Tiantian Qi
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chan Wen
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiaqi Yue
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Guangyan Wang
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bo Ma
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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25
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Zeng F, Quan L, Yang G, Qi T, Zhang L, Li S, Li H, Zhu L, Xu X. Structural Optimization and Structure-Activity Relationship of 4-Thiazolidinone Derivatives as Novel Inhibitors of Human Dihydroorotate Dehydrogenase. Molecules 2019; 24:molecules24152780. [PMID: 31370178 PMCID: PMC6696179 DOI: 10.3390/molecules24152780] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 07/24/2019] [Accepted: 07/26/2019] [Indexed: 11/16/2022] Open
Abstract
Human dihydroorotate dehydrogenase (hDHODH), one of the attractive targets for the development of immunosuppressive drugs, is also a potential target of anticancer drugs and anti-leukemic drugs. The development of promising hDHODH inhibitors is in high demand. Based on the unique binding mode of our previous reported 4-thiazolidinone derivatives, via molecular docking method, three new series 4-thiazolidinone derivatives were designed and synthesized as hDHODH inhibitors. The preliminary structure–activity relationship was investigated. Compound 9 of biphenyl series and compound 37 of amide series displayed IC50 values of 1.32 μM and 1.45 μM, respectively. This research will provide valuable reference for the research of new structures of hDHODH inhibitors.
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Affiliation(s)
- Fanxun Zeng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Lina Quan
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Guantian Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Tiantian Qi
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Letian Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Shiliang Li
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China
| | - Lili Zhu
- Shanghai Key Laboratory of New Drug Design, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science & Technology, Shanghai 200237, China.
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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Abstract
Objective: The present study was conducted to determine the role of gremlin during the development of posterior capsular opacification (PCO) via in vitro and in vivo experiments. Methods: The activation, roles and relationships of the BMPs/Smad1/5, MAPK, FAK and AKT signaling pathways in human lens epithelial cells (HLECs) after gremlin induction were detected by western blotting and real-time PCR. Wound-healing, transwell, capsular bag models and rat PCO models assays were used to test the effects of gremlin on HLECs' migration, proliferation, EMT-specific protein α-smooth muscle actin(α-SMA)and development of PCO in rats. Results: Our data showed that knockdown of the gremlin inhibited the development of PCO and reduced expression of α-SMA in rats. While gremlin did not alter the migration of HLECs, it increased the expression of p-ERK and p-AKT. Knockout of Smad2 or Smad3 inhibited the expression of p-ERK and p-AKT proteins induced by gremlin. Gremlin also reduced BMP4-induced expression of the p-Smad1/5 protein. Finally, knockout of Smad1/5 increased gremlin-induced expression of α-SMA, fibronectin and type I collagen (COL-1) in HLECs. Conclusion: These results suggested that gremlin contributed to the development of PCO by promoting LEC proliferation, activation of TGF-β/Smad, ERK and AKT signaling and inhibition of BMPs/Smad1/5 signaling. Furthermore, inhibiting gremlin effectively impaired both PCO development in rats and EMT in the lens capsule. Thus, our data suggest that gremlin might be a potential target for PCO.
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Affiliation(s)
- Bo Ma
- a Department of Ophthalmology , The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Ruihua Jing
- a Department of Ophthalmology , The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Jie Liu
- a Department of Ophthalmology , The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Tiantian Qi
- a Department of Ophthalmology , The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , Shaanxi , China
| | - Cheng Pei
- a Department of Ophthalmology , The First Affiliated Hospital of Xi'an Jiaotong University , Xi'an , Shaanxi , China
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Chen J, Qi T, Hu Z, Fan X, Zhu L, Iqbal MF, Yin X, Xu G, Fan X. OsNAR2.1 Positively Regulates Drought Tolerance and Grain Yield Under Drought Stress Conditions in Rice. Front Plant Sci 2019; 10:197. [PMID: 30846998 PMCID: PMC6393350 DOI: 10.3389/fpls.2019.00197] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 02/05/2019] [Indexed: 05/04/2023]
Abstract
Drought is an important environmental factor that severely restricts crop production. The high-affinity nitrate transporter partner protein OsNAR2.1 plays an essential role in nitrate absorption and translocation in rice. Our results suggest that OsNAR2.1 expression is markedly induced by water deficit. After drought stress conditions and irrigation, compared with wild-type (WT), the survival rate was significantly improved in OsNAR2.1 over-expression lines and decreased in OsNAR2.1 RNAi lines. The survival rate of Wuyunjing7 (WYJ), OsNRT2.1 over-expression lines and OsNRT2.3a over-expression lines was not significantly different. Compared with WT, overexpression of OsNAR2.1 could significantly increase nitrogen uptake in rice, and OsNAR2.1 RNAi could significantly reduce nitrogen uptake. Under drought conditions, the expression of OsNAC10, OsSNAC1, OsDREB2a, and OsAP37 was significantly reduced in OsNAR2.1 RNAi lines and increased substantially in OsNAR2.1 over-expression lines. Also, the chlorophyll content, relative water content, photosynthetic rate and water use efficiency were decreased considerably in OsNAR2.1 RNAi lines and increased significantly in OsNAR2.1 over-expression lines under drought conditions. Finally, compared to WT, grain yield increased by about 9.1 and 26.6%, in OsNAR2.1 over-expression lines under full and limited irrigation conditions, respectively. These results indicate that OsNAR2.1 regulates the response to drought stress in rice and increases drought tolerance.
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Affiliation(s)
- Jingguang Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
- CAAS-IRRI Joint Laboratory for Genomics-Assisted Germplasm Enhancement, Agricultural Genomics Institute in Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Tiantian Qi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Zhi Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaoru Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Longlong Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Muhammad Faseeh Iqbal
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaoming Yin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
| | - Xiaorong Fan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Xiaorong Fan,
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Zhou QZ, Guo XB, Zhang WS, Zhou JH, Yang C, Bian J, Chen MK, Guo WB, Wang P, Qi T, Wang CY, Yang JK, Liu CD. Expressions of miR-525-3p and its target gene SEMG1 in the spermatozoa of patients with asthenozoospermia. Andrology 2018; 7:220-227. [PMID: 30575326 PMCID: PMC6590180 DOI: 10.1111/andr.12573] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/20/2018] [Accepted: 11/07/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND Semenogelin 1 (SEMG1) is an important secretory protein in spermatozoa involved in the formation of a gel matrix encasing ejaculated spermatozoa. Previous studies show that the SEMG1 gene is highly expressed in spermatozoa from patients with asthenozoospermia (AZS); however, the underlying molecular mechanisms are not yet clear. OBJECTIVES To study the molecular mechanism of high expression of SEMG1 gene and its potential roles in AZS. MATERIALS AND METHODS Western blot and real-time PCR were used to detect the expression levels of SEMG1 protein and mRNA in the ejaculated spermatozoa from normozoospermic males and AZS patients. Bioinformatics analysis was used to predict miRNAs targeting for SEMG1 3'-untranslated region detection of the expression levels of all the candidate miRNAs in ejaculatory spermatozoa in AZS patients or normozoospermic volunteers. Luciferase reporter assays were performed to confirm it can directly bind to SEMG1. Correlation of miR-525-3p and SEMG1 mRNA expression with clinical sperm parameters were also analyzed. Finally, we conducted a follow-up study of reproductive history about all the subjects. RESULTS SEMG1 mRNA and protein level were significantly higher in AZS patients compared to that in normozoospermic volunteers (p < 0.001). Subsequently, microRNA-525-3p (miR-525-3p) which was predicted as a candidate regulator of SEMG1 was found lower expressed in ejaculatory spermatozoa in AZS patients (p = 0.0074). Luciferase experiment revealed that microRNA-525-3p could directly target SEMG1 3'-untranslated region and suppress its expression. Importantly, our retrospective follow-up study showed that both low miR-525-3p expression and high SEMG1 expression level was significantly associated with low progressive sperm motility, abnormal sperm morphology, and infertility. DISCUSSION AND CONCLUSION The elevated expression of SEMG1 and reduced expression of miR-525-3p are associated with AZS and male infertility. Our study provides a potential therapeutic target for the treatment of male infertility or for male contraception.
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Affiliation(s)
- Q-Z Zhou
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - X-B Guo
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - W-S Zhang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - J-H Zhou
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - C Yang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - J Bian
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - M-K Chen
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - W-B Guo
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - P Wang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - T Qi
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - C-Y Wang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J-K Yang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - C-D Liu
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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Xiao W, Qi T, He S, Li Z, Ou S, Zhang G, Liu X, Huang Z, Liang F. Low Wall Shear Stress Is Associated with Local Aneurysm Wall Enhancement on High-Resolution MR Vessel Wall Imaging. AJNR Am J Neuroradiol 2018; 39:2082-2087. [PMID: 30262645 DOI: 10.3174/ajnr.a5806] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/30/2018] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND PURPOSE Some retrospective studies have found that the aneurysm wall enhancement on high-resolution MR vessel wall postgadolinium T1WI has the potential to distinguish unstable aneurysms. This study aimed to identify hemodynamic characteristics that differ between the enhanced and nonenhanced areas of the aneurysm wall on high-resolution MR vessel wall postgadolinium T1WI. MATERIALS AND METHODS TOF-MRA and high-resolution MR vessel wall T1WI of 25 patients were fused to localize the enhanced area of the aneurysm wall. Using computational fluid dynamics, we studied the aneurysm models. Mean static pressure, mean wall shear stress, and oscillatory shear index were compared between the enhanced and nonenhanced areas. RESULTS The aneurysmal enhanced area had lower wall shear stress (P < .05) and a lower oscillatory shear index (P = .021) than the nonenhanced area. In addition, the whole aneurysm had lower wall shear stress (P < .05) and a higher oscillatory shear index (P = .007) than the parent artery. CONCLUSIONS This study suggests that there are hemodynamic differences between the enhanced and nonenhanced areas of the aneurysm wall on high-resolution MR vessel wall postgadolinium T1WI.
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Affiliation(s)
- W Xiao
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - T Qi
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - S He
- Radiology (S.H., Z.L.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Z Li
- Radiology (S.H., Z.L.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - S Ou
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - G Zhang
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - X Liu
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - Z Huang
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
| | - F Liang
- From the Departments of Neurosurgery (W.X.,T.Q., S.O., G.Z., X.L., Z.H., F.L.)
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Wang H, Yue H, Sun B, Zhu X, Niu H, Qi T, Ding W, Han L, Zhang M, Tian Z, Guan H, Yang J, Li S, Zhu K, Tang C, Dong M, Yin Y, Wang H, Cao X, Zhang J, Liu H, Xu Z, Gao C, Heng Y. Birth population survey in Huai'an in 2015: perinatal-neonatal mortality and preterm birth rate in emerging regions in China. J Matern Fetal Neonatal Med 2018; 33:838-846. [PMID: 30373412 DOI: 10.1080/14767058.2018.1506439] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Objective: This survey followed the birth population-based study conducted in 2010 in Huai'an, Jiangsu Province, with the aim to estimate perinatal-neonatal mortality and preterm birth rate in emerging regions with similar maternal-fetal and neonatal care conditions in China.Materials and methods: Data of total births in 2015 were prospectively collected by regional perinatal network collaboration in Huai'an, a subprovincial region with a population of 5,644,500 and gross domestic production of 9082 USD per capita.Results: The 59,424 birth registries (including 59,023 live births and 167 stillbirths) corresponded to a birth rate of 10.5‰ and a Male-to-female ratio of 113.7:100. All births there were from 85, 16, and 6 level I, II, and III hospitals, with a delivery rate of 30.4, 40.2, and 29.4%, respectively. Of all births, 14.1% had pregnancy-associated comorbidities and complications, 54.4% (32,226/59,190) had cesarean delivery, and multiple pregnancies and birth defects occurred in 2.1% (1,250) and 5.5‰ (324), respectively. The mean birth weight was 3448 ± 507 g with 13.9% being macrosomia, and 2.86% (1695/59,190) low birth weight. Preterm birth rate was 4.06% (2404/59,190) with a mortality rate of 8.5%. There were 94.5% recorded as healthy newborns and 5.5% (3263) requiring hospitalization after birth. The perinatal and neonatal mortality rate was 5.2‰ (167 stillbirths, 139 early neonatal deaths) and 4.0‰, respectively. Compared with the 2010 survey, these data demonstrated generally improved status of perinatal-neonatal healthcare.Conclusions: The low rates of perinatal-neonatal mortality, preterm birth and preterm mortality suggest that the concept and study protocol of perinatal-neonatal healthcare in Huai'an may serve as the benchmark for estimating regional vital statistics and perinatal and neonatal outcomes.
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Affiliation(s)
- H Wang
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - H Yue
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - B Sun
- Departments of Pediatrics and Neonatology, Children's Hospital of Fudan University Shanghai, Shanghai, China
| | - X Zhu
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - H Niu
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - T Qi
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - W Ding
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - L Han
- Unit of Population Health Information and Departments of Neonatology and Obstetrics, Huai'an Women and Children's Hospital, Huai'an, China
| | - M Zhang
- Departments of Pediatrics and Obstetrics, Huai'an First General Hospital, Huai'an, China
| | - Z Tian
- Departments of Pediatrics and Obstetrics, Huai'an First General Hospital, Huai'an, China
| | - H Guan
- Departments of Pediatrics and Obstetrics, Huai'an Second General Hospital, Huai'an, China
| | - J Yang
- Departments of Pediatrics and Obstetrics, Huai'an Second General Hospital, Huai'an, China
| | - S Li
- Departments of Pediatrics and Obstetrics, Huaiyin District Hospital, Huai'an, China
| | - K Zhu
- Departments of Pediatrics and Obstetrics, Huaiyin District Hospital, Huai'an, China
| | - C Tang
- Departments of Pediatrics and Obstetrics, Chuzhou District Hospital, Huai'an, China
| | - M Dong
- Departments of Pediatrics and Obstetrics, Chuzhou District Hospital, Huai'an, China
| | - Y Yin
- Departments of Pediatrics and Obstetrics, Lianshui County Hospital, Huai'an, China
| | - H Wang
- Departments of Pediatrics and Obstetrics, Lianshui County Hospital, Huai'an, China
| | - X Cao
- Departments of Pediatrics and Obstetrics, Xuyi County Hospital, Huai'an, China
| | - J Zhang
- Departments of Pediatrics and Obstetrics, Xuyi County Hospital, Huai'an, China
| | - H Liu
- Departments of Pediatrics and Obstetrics, Hongze County Hospital, Huai'an, China
| | - Z Xu
- Departments of Pediatrics and Obstetrics, Hongze County Hospital, Huai'an, China
| | - C Gao
- Departments of Pediatrics and Obstetrics, Jinhu County Hospital, Huai'an, China
| | - Y Heng
- Departments of Pediatrics and Obstetrics, Jinhu County Hospital, Huai'an, China
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Chen J, Zhang R, Shen Y, Liu L, Qi T, Wang Z, Mehraj V, Routy JP, Lu H. Serum cryptococcal antigen titre as a diagnostic tool and a predictor of mortality in HIV-infected patients with cryptococcal meningitis. HIV Med 2018; 20:69-73. [PMID: 30311440 DOI: 10.1111/hiv.12679] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2018] [Indexed: 02/06/2023]
Abstract
OBJECTIVES The aim was to determine the effectiveness of the serum cryptococcal antigen (CrAg) test in the diagnosis of concurrent cryptococcal meningitis (CM) and as a predictor of mortality in HIV-infected patients. METHODS In this retrospective study, all HIV-infected patients admitted to Shanghai Public Health Clinical Center from 1 January 2014 to 31 August 2016 were screened for serum CrAg using the latex agglutination test. Serum CrAg-positive patients underwent lumbar puncture to confirm CM prior to the initiation of appropriate antifungal therapy and were followed up for at least 6 months. RESULTS One hundred and four (7.1%) of the total of 1474 HIV-infected patients screened were serum CrAg-positive. CM was diagnosed in the majority of serum CrAg-positive patients (71.3%; 67 of 94) and was confirmed in all (46 of 46) of the patients with headache or coma and in 43.8% (21 of 48) of patients without neurological symptoms. CrAg titres ≥ 1:1024 showed a sensitivity of 82.5% and a specificity of 86.7% for the diagnosis of concurrent CM (P < 0.001). The positive predictive value for CM in this population was 94.3%. A total of 13 serum CrAg-positive patients [13.8%; 95% confidence interval (CI) 7.5-22.4%] died (11 as a result of CM and two others as a result of bacterial pneumonia) despite early antifungal treatment initiation. Serum CrAg titres ≥ 1:1024 predicted all-cause mortality (hazard ratio 3.69; P = 0.03). CONCLUSIONS Serum CrAg titres ≥ 1:1024 not only were associated with concurrent CM but also predicted mortality. HIV-infected patients with a positive serum CrAg test during screening should receive lumbar punctures regardless of symptoms to rule out CM and patients with serum CrAg titres ≥ 1:1024 should be offered immediate care.
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Affiliation(s)
- J Chen
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China.,Chronic Viral Illness Service, McGill University Health Centre, Montreal, QC, Canada.,Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - R Zhang
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China
| | - Y Shen
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China
| | - L Liu
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China
| | - T Qi
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China
| | - Z Wang
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China
| | - V Mehraj
- Chronic Viral Illness Service, McGill University Health Centre, Montreal, QC, Canada.,Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,CR-CHUM, Université de Montréal, Montreal, QC, Canada
| | - J P Routy
- Chronic Viral Illness Service, McGill University Health Centre, Montreal, QC, Canada.,Research Institute of the McGill University Health Centre, Montreal, QC, Canada.,Division of Hematology, McGill University Health Centre, Montreal, QC, Canada
| | - H Lu
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Shanghai, China.,Department of Internal Medicine, Shanghai Medical College, Fudan University, Shanghai, China.,Department of Infectious Diseases, Huashan Hospital Affiliated to Fudan University, Shanghai, China
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Yang C, Guo WB, Zhang WS, Bian J, Yang JK, Zhou QZ, Chen MK, Peng W, Qi T, Wang CY, Liu CD. Comprehensive proteomics analysis of exosomes derived from human seminal plasma. Andrology 2018; 5:1007-1015. [PMID: 28914500 PMCID: PMC5639412 DOI: 10.1111/andr.12412] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 06/18/2017] [Accepted: 07/11/2017] [Indexed: 01/30/2023]
Abstract
Exosomes are membranous nanovesicles of endocytic origin that carry and transfer regulatory bioactive molecules and mediate intercellular communication between cells and tissues. Although seminal exosomes have been identified in human seminal plasma, their exact composition and possible physiologic function remain unknown. The objective of this study was to perform a comprehensive proteomics analysis of exosomes derived from human seminal plasma. Seminal exosomes were isolated and purified from 12 healthy donors using a 30% sucrose cushion‐based exosome‐isolation protocol, followed by characterization by western blot, transmission electron microscopy, and nanoparticle tracking analysis before performing extensive liquid chromatography tandem mass spectrometry proteomics analysis. The identified proteins were analyzed by bioinformatics analysis, and seminal exosomes‐associated proteins were selectively validated by western blot. A total of 1474 proteins were identified in all seminal exosomes samples, with Gene Ontology analysis demonstrating that these identified seminal exosomes‐associated proteins were mostly linked to ‘exosomes,’ ‘cytoplasm,’ and ‘cytosol.’ Bioinformatics analysis indicated that these proteins were mainly involved in biologic processes, including metabolism, energy pathways, protein metabolism, cell growth and maintenance, and transport. Of these identified proteins, PHGDH, LGALS3BP, SEMG1, ACTB, GAPDH, and the exosomal‐marker protein ALIX were validated by western blot. This study provided a more comprehensive description of the seminal exosomes proteome and could also be a resource for further screening of biomarkers and comparative proteomics studies, including those associated with male infertility and prostate cancer.
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Affiliation(s)
- C Yang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - W-B Guo
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - W-S Zhang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - J Bian
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - J-K Yang
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Q-Z Zhou
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - M-K Chen
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - W Peng
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - T Qi
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - C-Y Wang
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - C-D Liu
- Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
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Zhang Y, Ma G, Feng J, Yang X, Wu X, Chen S, Luo S, Zhang B, Chen J, Zang Z, Qi T, Wang B, Lai Y, Ye L, Huang Z. 477 The value of monitoring nocturnal penile tumescence and rigidity testing (NPTR) for three consecutive nights in the forensic identification. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Huang Y, Chatooah ND, Qi T, Wang G, Ma L, Ying Q, Lan Y, Song Y, Li C, Chu K, Chen P, Xu W, Wan H, Cai Y, Zhou J. Health-related quality of life and its associated factors in Chinese middle-aged women. Climacteric 2018; 21:483-490. [PMID: 29856658 DOI: 10.1080/13697137.2018.1476133] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Y. Huang
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - N. D. Chatooah
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - T. Qi
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - G. Wang
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - L. Ma
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Q. Ying
- Zhejiang Cancer Institute, Zhejiang Cancer Hospital, Hangzhou, People’s Republic of China
| | - Y. Lan
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - Y. Song
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - C. Li
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - K. Chu
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - P. Chen
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - W. Xu
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
| | - H. Wan
- Maternal and Child Health & Family Planning Service Center, Gongshu District, Hangzhou, People’s Republic of China
| | - Y. Cai
- Maternal and Child Health & Family Planning Service Center, Gongshu District, Hangzhou, People’s Republic of China
| | - J. Zhou
- Department of Gynecology, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, People’s Republic of China
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Cheng G, Xin Q, Li K, Sun C, Lin Z, Luan Y, Wang J, Qi T, Chen Y, Xu D, Kong F. The Association between O(6)-Methylguanine DNA Methyltransferase (MGMT) rs11016879 and rs7069143 Polymorphisms and Susceptibility to Еsophageal Аdenocarcinoma in a Han Chinese Population. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418040063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Liu C, Chu C, Zhang J, Wu D, Xu D, Li P, Chen Y, Liu B, Pei L, Zhang L, Liu S, Qi T, Lou XY, Li L. IRX3 is a genetic modifier for birth weight, adolescent obesity and transaminase metabolism. Pediatr Obes 2018; 13:141-148. [PMID: 28316138 DOI: 10.1111/ijpo.12214] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/20/2017] [Indexed: 01/29/2023]
Abstract
OBJECTIVE IRX3 expression has been functionally associated in obesity-associated long-distance susceptibility loci, but the effect of the IRX3 genetic variants on human obesity and obesity-related metabolism remains uncertain. METHODS To determine the genetic role of IRX3, we conducted a molecular epidemiological analysis using three haplotype tagging single nucleotide polymorphisms (SNPs; rs8053360, rs3751723 and rs12445085) and one nonsynonymous SNP (rs1126960) at the IRX3 locus in 333 junior and senior high school students from a northeast Chinese population. RESULTS We identified significant associations between IRX3 SNPs and birth weight, body mass index (BMI), aspartate aminotransferase (AST), alanine aminotransferase (ALT) and AST/ALT ratio. The rs8053360 CC and rs1126960 GG genotypes were associated with increased birth weight and BMI, especially in females. Individuals with the rs12445085 TT genotype had significantly higher levels of AST and ALT, whereas individuals with the rs1126960 GG genotype had a significantly lower AST/ALT ratio than did individuals with other genotypes. However, no significant relationships were found between any of the IRX3 SNPs and metabolic syndrome or diabetes. CONCLUSIONS IRX3 genetic variants associate with birth weight, BMI and AST/ALT-related transaminase metabolism, supporting the role of IRX3 as an obesity-associated susceptibility gene.
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Affiliation(s)
- C Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - C Chu
- Department of Applied Psychology, Humanities and Management Colleges, Guangdong Medical University, Guangdong, China
| | - J Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - D Wu
- No. 2 Department of Rheumatology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - D Xu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - P Li
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Y Chen
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - B Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - L Pei
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - L Zhang
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
| | - S Liu
- Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - T Qi
- Institute of Bioinformatics, Zhejiang University, Hangzhou, China
| | - X-Y Lou
- Biostatistics Program, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.,Arkansas Children's Research Institute, Little Rock, AR, USA
| | - L Li
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China
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Zeng F, Qi T, Li C, Li T, Li H, Li S, Zhu L, Xu X. Synthesis, structure-activity relationship and binding mode analysis of 4-thiazolidinone derivatives as novel inhibitors of human dihydroorotate dehydrogenase. Medchemcomm 2017; 8:1297-1302. [PMID: 30108840 DOI: 10.1039/c7md00081b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 04/17/2017] [Indexed: 01/21/2023]
Abstract
A series of 4-thiazolidinone derivatives were synthesized and evaluated as novel human dihydroorotate dehydrogenase (hDHODH) inhibitors. Compounds 26 and 31 displayed IC50 values of 1.75 and 1.12 μM, respectively. The structure-activity relationship was summarized. Further binding mode analysis revealed that compound 31 could form a hydrogen bond with Tyr38 and a water-mediated hydrogen bond with Ala55, which may be necessary for maintaining the bioactivities of the compounds in this series. Further structural optimization of the para- or meta-position of the phenyl group at R will lead to the identification of more potent hDHODH inhibitors.
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Affiliation(s)
- Fanxun Zeng
- Shanghai Key Laboratory of Chemical Biology , School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China . ; ; ; Fax: +86 21 64252603 ; Tel: +86 21 64250213 ; Tel: +86 21 64252945
| | - Tiantian Qi
- Shanghai Key Laboratory of New Drug Design , State Key Laboratory of Bioreactor Engineering , School of Pharmacy , East China University of Science & Technology , Shanghai 200237 , China . ; ; Tel: +86 21 64253379
| | - Chunyan Li
- Shanghai Key Laboratory of Chemical Biology , School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China . ; ; ; Fax: +86 21 64252603 ; Tel: +86 21 64250213 ; Tel: +86 21 64252945
| | - Tingfang Li
- Shanghai Key Laboratory of Chemical Biology , School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China . ; ; ; Fax: +86 21 64252603 ; Tel: +86 21 64250213 ; Tel: +86 21 64252945
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design , State Key Laboratory of Bioreactor Engineering , School of Pharmacy , East China University of Science & Technology , Shanghai 200237 , China . ; ; Tel: +86 21 64253379
| | - Shiliang Li
- Shanghai Key Laboratory of Chemical Biology , School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China . ; ; ; Fax: +86 21 64252603 ; Tel: +86 21 64250213 ; Tel: +86 21 64252945.,Shanghai Key Laboratory of New Drug Design , State Key Laboratory of Bioreactor Engineering , School of Pharmacy , East China University of Science & Technology , Shanghai 200237 , China . ; ; Tel: +86 21 64253379
| | - Lili Zhu
- Shanghai Key Laboratory of New Drug Design , State Key Laboratory of Bioreactor Engineering , School of Pharmacy , East China University of Science & Technology , Shanghai 200237 , China . ; ; Tel: +86 21 64253379
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology , School of Pharmacy , East China University of Science and Technology , 130 Meilong Road , Shanghai 200237 , China . ; ; ; Fax: +86 21 64252603 ; Tel: +86 21 64250213 ; Tel: +86 21 64252945.,Shanghai Collaborative Innovation Center for Biomanufacturing Technology , 130 Meilong Road , Shanghai 200237 , China
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38
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Qi T, Zhang R, Shen Y, Liu L, Lowrie D, Song W, Chen J, Wang Z, Shen J, Cai R, Guan L, Luo B, Tang Y, Lu H. Etiology and clinical features of 229 cases of bloodstream infection among Chinese HIV/AIDS patients: a retrospective cross-sectional study. Eur J Clin Microbiol Infect Dis 2016; 35:1767-1770. [PMID: 27502930 DOI: 10.1007/s10096-016-2724-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 07/03/2016] [Indexed: 11/28/2022]
Abstract
Bloodstream infections (BSIs) are prevalent among people living with HIV/AIDS. The etiology varies in different regions and different periods. We aimed to survey the etiological and clinical features of BSIs in HIV patients in mainland China. We assessed all HIV patients with a positive blood culture in a Chinese teaching hospital from September 2009 through December 2014. We excluded those with specimens likely to have been contaminated. We used Pearson's chi-squared test to measure the differences in characteristics among subgroups of different pathogens. Among 2442 Chinese HIV-seropositive inpatients, 229 (9.38 %) experienced BSIs. The most common pathogens detected included Cryptococcus neoformans (22.7 %), Penicillium marneffei (18.8 %), Mycobacterium tuberculosis (15.3 %), and non-tuberculous mycobacterium (14.8 %). 30/229 (13.1 %) HIV patients with BSIs had a poor prognosis. BSIs are prevalent in hospitalized patients with HIV/AIDS in China. Fungi and mycobacteria are the predominant pathogens.
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Affiliation(s)
- T Qi
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - R Zhang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Y Shen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - L Liu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - D Lowrie
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - W Song
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - J Chen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Z Wang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - J Shen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - R Cai
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - L Guan
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - B Luo
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Y Tang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - H Lu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.
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Torchinsky DH, Chu H, Zhao L, Perkins NB, Sizyuk Y, Qi T, Cao G, Hsieh D. Structural distortion-induced magnetoelastic locking in Sr(2)IrO(4) revealed through nonlinear optical harmonic generation. Phys Rev Lett 2015; 114:096404. [PMID: 25793834 DOI: 10.1103/physrevlett.114.096404] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 06/04/2023]
Abstract
We report a global structural distortion in Sr_{2}IrO_{4} using spatially resolved optical second and third harmonic generation rotational anisotropy measurements. A symmetry lowering from an I4_{1}/acd to I4_{1}/a space group is observed both above and below the Néel temperature that arises from a staggered tetragonal distortion of the oxygen octahedra. By studying an effective superexchange Hamiltonian that accounts for this lowered symmetry, we find that perfect locking between the octahedral rotation and magnetic moment canting angles can persist even in the presence of large noncubic local distortions. Our results explain the origin of the forbidden Bragg peaks recently observed in neutron diffraction experiments and reconcile the observations of strong tetragonal distortion and perfect magnetoelastic locking in Sr_{2}IrO_{4}.
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Affiliation(s)
- D H Torchinsky
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - H Chu
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA
- Department of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - L Zhao
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
| | - N B Perkins
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55116, USA
| | - Y Sizyuk
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55116, USA
| | - T Qi
- Center for Advanced Materials, Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - G Cao
- Center for Advanced Materials, Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA
| | - D Hsieh
- Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
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Qi T, Jiang B, Zhu Z, Wei C, Gao Y, Zhu S, Xu H, Lou X. Mixed linear model approach for mapping quantitative trait loci underlying crop seed traits. Heredity (Edinb) 2014; 113:224-32. [PMID: 24619175 DOI: 10.1038/hdy.2014.17] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 11/25/2013] [Indexed: 11/09/2022] Open
Abstract
The crop seed is a complex organ that may be composed of the diploid embryo, the triploid endosperm and the diploid maternal tissues. According to the genetic features of seed characters, two genetic models for mapping quantitative trait loci (QTLs) of crop seed traits are proposed, with inclusion of maternal effects, embryo or endosperm effects of QTL, environmental effects and QTL-by-environment (QE) interactions. The mapping population can be generated either from double back-cross of immortalized F2 (IF2) to the two parents, from random-cross of IF2 or from selfing of IF2 population. Candidate marker intervals potentially harboring QTLs are first selected through one-dimensional scanning across the whole genome. The selected candidate marker intervals are then included in the model as cofactors to control background genetic effects on the putative QTL(s). Finally, a QTL full model is constructed and model selection is conducted to eliminate false positive QTLs. The genetic main effects of QTLs, QE interaction effects and the corresponding P-values are computed by Markov chain Monte Carlo algorithm for Gaussian mixed linear model via Gibbs sampling. Monte Carlo simulations were performed to investigate the reliability and efficiency of the proposed method. The simulation results showed that the proposed method had higher power to accurately detect simulated QTLs and properly estimated effect of these QTLs. To demonstrate the usefulness, the proposed method was used to identify the QTLs underlying fiber percentage in an upland cotton IF2 population. A computer software, QTLNetwork-Seed, was developed for QTL analysis of seed traits.
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Affiliation(s)
- T Qi
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - B Jiang
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - Z Zhu
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - C Wei
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - Y Gao
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, PR China
| | - S Zhu
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - H Xu
- Institute of Bioinformatics, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, PR China
| | - X Lou
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
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Shen Y, Wang J, Qi T, Wang Z, Lu H. Trends in clinical characteristics of HIV-infected patients initiating antiretroviral therapy in Shanghai from 2006 to 2011. Int J STD AIDS 2013; 25:504-10. [PMID: 24327726 DOI: 10.1177/0956462413515198] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Accepted: 10/20/2013] [Indexed: 02/02/2023]
Abstract
This study aimed to characterise the clinical characteristics of HIV-infected patients accessing antiretroviral therapy (ART) in Shanghai, China, from 2006 to 2011. We retrospectively reviewed the records of patients who initiated ART in Shanghai during the 6-year period of 2006 through 2011. The median age at ART initiation decreased from 41 years in 2008 to 38 years in 2011. The median CD4 counts at ART initiation rose from 65 cells/mm(3)in 2006 to 203 cells/mm(3)in 2011. The proportion of patients with CD4 counts <200 cells/mm(3)at ART initiation decreased from 88.5% in 2006 to 49.6% in 2011. The proportion of patients starting stavudine-based regimens of stavudine/lamivudine/efavirenz and stavudine/lamivudine/nevirapine fell from 49.2% in 2006 to 23.4% in 2011. The proportion of patients starting nevirapine-based regimens of zidovudine/lamivudine/nevirapine and stavudine/lamivudine/nevirapine fell from 44.3% in 2006 to 16.5% in 2011. The study reflects that the clinical characteristics of the patients initiating ART in Shanghai have changed over time; ART was increasingly provided in patients with higher CD4 counts; and the regimens containing stavudine were prescribed less frequently. Strategies to facilitate early access to ART and further reduction in stavudine use are needed.
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Affiliation(s)
- Y Shen
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - J Wang
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - T Qi
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Z Wang
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - H Lu
- Department of Infectious Diseases, Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
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Qi T, Dong M, Watkins HA, Wootten D, Miller LJ, Hay DL. Receptor activity-modifying protein-dependent impairment of calcitonin receptor splice variant Δ(1-47)hCT((a)) function. Br J Pharmacol 2013; 168:644-57. [PMID: 22946511 DOI: 10.1111/j.1476-5381.2012.02197.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/07/2012] [Accepted: 08/10/2012] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Alternative splicing expands proteome diversity to GPCRs. Distinct receptor variants have been identified for a secretin family GPCR, the calcitonin receptor (CTR). The possible functional contributions of these receptor variants are further altered by their potential interactions with receptor activity-modifying proteins (RAMPs). One variant of the human CTR lacks the first 47 residues at its N terminus [Δ(1-47)hCT((a)) ]. However, very little is known about the pharmacology of this variant or its ability to interact with RAMPs to form amylin receptors. EXPERIMENTAL APPROACH Δ(1-47)hCT((a)) was characterized both with and without RAMPs in Cos7 and/or HEK293S cells. The receptor expression (ELISA assays) and function (cAMP and pERK1/2 assays) for up to six agonists and two antagonists were determined. KEY RESULTS Despite lacking 47 residues at the N terminus, Δ(1-47)hCT((a)) was still able to express at the cell surface, but displayed a generalized reduction in peptide potency. Δ(1-47)hCT((a)) retained its ability to interact with RAMP1 and formed a functional amylin receptor; this also appeared to be the case with RAMP3. On the other hand, its interaction with RAMP2 and resultant amylin receptor was reduced to a greater extent. CONCLUSIONS AND IMPLICATIONS Δ(1-47)hCT((a)) acts as a functional receptor at the cell surface. It exhibits altered receptor function, depending on whether it associates with a RAMP and which RAMP it interacts with. Therefore, the presence of this variant in tissues will potentially contribute to altered peptide binding and signalling, depending on the RAMP distribution in tissues.
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Affiliation(s)
- T Qi
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
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Gong C, Qi T, Wei X, Qu Y, Wu Q, Luo F, Qian Z. Thermosensitive polymeric hydrogels as drug delivery systems. Curr Med Chem 2013; 20:79-94. [PMID: 23092130] [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] [Received: 04/26/2012] [Revised: 10/16/2012] [Accepted: 10/16/2012] [Indexed: 06/01/2023]
Abstract
Thermosensitive hydrogels are very important biomaterials used in drug delivery systems (DDSs), which gained increasing attention of researchers. Thermosensitive hydrogels have great potential in various applications, such as drug delivery, cell encapsulation, tissue engineering, and etc. Especially, injectable thermosensitive hydrogels with lower sol-gel transition temperature around physiological temperature have been extensively studied. By in vivo injection, the hydrogels formed non-flowing gel at body temperature. Upon incorporation of pharmaceutical agents, the hydrogel systems could act as sustained drug release depot in situ. Injectable thermosensitive hydrogel systems have a number of advantages, including simplicity of drug formulation, protective environment for drugs, prolonged and localized drug delivery, and ease of application. The objective of this review is to summarize fundamentals, applications, and recent advances of injectable thermosensitive hydrogel as DDSs, including chitosan and related derivatives, poly(N-isopropylacrylamide)-based (PNIPAAM) copolymers, poly(ethylene oxide)/poly(propylene oxide) (PEO/PPO) copolymers and its derivatives, and poly(ethylene glycol)/ biodegradable polyester copolymers.
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Affiliation(s)
- C Gong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610041, China
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Zhang H, Pu J, Qi T, Qi M, Yang C, Li S, Huang K, Zheng L, Tong Q. MicroRNA-145 inhibits the growth, invasion, metastasis and angiogenesis of neuroblastoma cells through targeting hypoxia-inducible factor 2 alpha. Oncogene 2012; 33:387-97. [PMID: 23222716 DOI: 10.1038/onc.2012.574] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 10/01/2012] [Accepted: 10/23/2012] [Indexed: 11/10/2022]
Abstract
Recent evidence shows that hypoxia-inducible factor 2 alpha (HIF-2α) may have critical roles in the growth and progression of neuroblastoma (NB) under non-hypoxic conditions. However, the underlying mechanisms and clinical potentials of normoxic HIF-2α expression in NB still remain largely unknown. In this study, HIF-2α immunostaining was identified in 26/42 NB tissues, which was correlated with clinicopathological features. In subtotal 20 NB cases, microRNA-145 (miR-145) was downregulated and inversely correlated with HIF-2α expression. Bioinformatics analysis revealed a putative miR-145 binding site in the 3'-untranslated region (3'-UTR) of HIF-2α messenger RNA (mRNA). Overexpression or knockdown of miR-145 responsively altered both the mRNA and protein levels of HIF-2α and its downstream genes, cyclin D1, matrix metalloproteinase 14 and vascular endothelial growth factor, in normoxically cultured NB cell lines SH-SY5Y and SK-N-SH. In a luciferase reporter system, miR-145 downregulated the luciferase activity of HIF-2α 3'-UTR, and these effects were abolished by a mutation in the putative miR-145-binding site. Overexpression of miR-145 suppressed the growth, invasion, metastasis and angiogenesis of SH-SY5Y and SK-N-SH cells in vitro and in vivo, while restoration of HIF-2α expression rescued the tumor cells from miR-145-mediated defects in these biological features. Furthermore, anti-miR-145 inhibitor rescued the HIF-2α knockdown-mediated repression on the growth, migration, invasion and angiogenesis of NB cells. These data indicate that miR-145 suppresses HIF-2α expression via the binding site in the 3'-UTR under normoxic conditions, thus inhibiting the aggressiveness and angiogenesis of NB.
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Affiliation(s)
- H Zhang
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - J Pu
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - T Qi
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - M Qi
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - C Yang
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - S Li
- Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - K Huang
- 1] Clinical Center of Human Genomic Research, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China [2] Department of Cardiology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - L Zheng
- 1] Clinical Center of Human Genomic Research, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China [2] Department of Pathology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
| | - Q Tong
- 1] Department of Pediatric Surgery, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China [2] Clinical Center of Human Genomic Research, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, P.R. China
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Chen J, Sun CL, Chen Z, Xiao HJ, Qi T, Li XM, Tao X, Zhang B. Separation, culture and identification of SD rat corpus cavernosal endothelial cells. Andrologia 2012; 44:250-5. [PMID: 22300279 DOI: 10.1111/j.1439-0272.2012.01274.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2011] [Indexed: 11/29/2022] Open
Abstract
The aim of the study is to investigate the methods of separation, culture and identification of Sprague Dawley (SD) rat corpus cavernosal vascular endothelial cells (CCECs). Cavernosal tissues were isolated from male SD rats. Enzymatic digestion was applied to separate CCECs. Purified cells were obtained using immunomagnetic beads and flow cytometric cell sorting and subcultured in EMG-2 medium. The growth curve of CCECs was measured by the tetrazolium salt 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay. The cells were identified by von Willebrand factor (vWF) using immunofluorescence, and the positive percentage of vWF expression was detected by flow cytometry. The monomorphic cobblestone-like cells were observed by microscopy. High purification was obtained using immunomagnetic beads. After 2 days of incubation, cells entered the logarithmic growth phase and reached a plateau on the fifth day. The vWF expression in cytoplasm was positive. The purity of cells was 95.8%, which was tested by flow cytometry. SD rat CCECs can be separated and cultured successfully by the method of enzymatic digestion, immunomagnetic beads and flow cytometric cell sorting.
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Affiliation(s)
- J Chen
- Department of Infertility and Sexual Medicine, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Li X, Zhang B, Chen J, Qi T, Wang B, Chen S. The therapy of high-flow priapism by superselective internal pudendal artery embolisation. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang Y, Li J, Wang L, Qi T, Chen D, Wang W. Preparation of Rutile Titanium Dioxide White Pigment by a Novel NaOH Molten-Salt Process: Influence of Doping and Calcination. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201100006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Qi T, Han J, Cui Y, Zong M, Liu X, Zhu B. Comparative proteomic analysis for the detection of biomarkers in pancreatic ductal adenocarcinomas. J Clin Pathol 2007; 61:49-58. [PMID: 17412869 DOI: 10.1136/jcp.2006.044735] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To search for novel potential protein biomarkers for the early detection and better intervention of pancreatic ductal adenocarcinoma (PDAC). METHODS Eight pairs of matched PDAC and non-cancerous pancreas tissues were profiled with two-dimensional electrophoresis; differentially expressed proteins were identified by mass spectrometry. Expression patterns of TBX4 (T-box transcription factor TBX4) and HSP60 (60 KDa heat shock protein) were studied with immunohistochemistry using tissue microarrays. RESULTS A total of 48 differentially expressed proteins were identified; 30 of them are novel potential biomarkers. Immunohistochemistry showed that TBX4 expression could be seen in both centroacinar cells and small ducts in normal pancreas and tumour cells in 5/5 (100%) well differentiated, 35/38 (92.1%) moderately differentiated, and 11/18 (61.1%) poorly differentiated PDAC tissues with different staining intensity. However, in normal acinar cells and tumour cells in the other 3/38 (7.9%) moderately differentiated and 7/18 (38.9%) poorly differentiated PDAC tissues, there was no visible TBX4 expression. The expression difference of TBX4 between moderately differentiated and poorly differentiated PDAC tissues was statistically significant (p<0.01). In addition, there was obvious morphology difference between TBX4 negatively stained and positively stained tumour cells, which suggests different cellular origins. Strong expression of HSP60 could be seen in both acinar cells and small ducts in normal pancreas tissues and tumour cells in PDAC tissues except for islets and tumour stoma; no correlation was found between HSP60 expression and differentiation of PDAC tissues. CONCLUSIONS 30 novel potential biomarkers differentially expressed in PDAC tissues were identified. TBX4 may be a differentiation related protein; its prognostic value for PDAC deserves further study.
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Affiliation(s)
- T Qi
- Key Laboratory of Ministry of Health for Biotech-Drug, Shandong Medicinal Biotechnology Center, Shandong Academy of Medical Sciences, Jinan, Shandong Province, China
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