51
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Weng Q, Zhou L, Wang H, Hui J, Chen M, Pang P, Zheng L, Xu M, Wang Z, Ji J. A radiomics model for determining the invasiveness of solitary pulmonary nodules that manifest as part-solid nodules. Clin Radiol 2019; 74:933-943. [PMID: 31521324 DOI: 10.1016/j.crad.2019.07.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/31/2019] [Indexed: 12/13/2022]
Abstract
AIM A nomogram model was developed to predict the histological subtypes of lung invasive adenocarcinomas (IAs) and minimally invasive adenocarcinomas (MIAs) that manifest as part-solid ground-glass nodules (GGNs). MATERIALS AND METHODS This retrospective study enrolled 119 patients with histopathologically confirmed part-solid GGNs assigned to the training (n=83) or testing cohorts (n=36). Radiomic features were extracted based on the unenhanced computed tomography (CT) images. R software was applied to process the qualitative and quantitative data. The CT features model, radiomic signature model, and combined prediction model were constructed and compared. RESULTS A total of 396 radiomic features were extracted from the preoperative CT images, four features including MaxIntensity, RMS, ZonePercentage, and LongRunEmphasis_angle0_offset7 were indicated to be the best discriminators to establish the radiomic signature model. The performance of the model was satisfactory in both the training and testing set with areas under the curve (AUCs) of 0.854 (95% confidence interval [CI]: 0.774 to 0.934) and 0.813 (95% CI: 0.670 to 0.955), respectively. The CT morphology of the lesion shape and diameter of the solid component were confirmed to be a significant feature for building the CT features model, which had an AUC of 0.755 (95% CI: 0.648 to 0.843). A nomogram that integrated lesion shape and radiomic signature was constructed, which contributed an AUC of 0.888 (95% CI: 0.82 to 0.955). CONCLUSIONS The radiomic signature could provide an important reference for differentiating IAs from MIAs, and could be significantly enhanced by the addition of CT morphology. The nomogram may be highly informative for making clinical decisions.
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Affiliation(s)
- Q Weng
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - L Zhou
- Department of Radiology, Lishui People's Hospital, Lishui, 323000, China
| | - H Wang
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - J Hui
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - M Chen
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - P Pang
- GE Healthcare, Hangzhou 310000, China
| | - L Zheng
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - M Xu
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - Z Wang
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China
| | - J Ji
- Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research, Lishui Hospital of Zhejiang University, Lishui, 323000, China.
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Dong X, Zhan W, Zhao M, Che J, Dai X, Wu Y, Xu L, Zhou Y, Zhao Y, Tian T, Cheng G, Jin Z, Li J, Shao Y, He Q, Yang B, Weng Q, Hu Y. Discovery of 3,4,6-Trisubstituted Piperidine Derivatives as Orally Active, Low hERG Blocking Akt Inhibitors via Conformational Restriction and Structure-Based Design. J Med Chem 2019; 62:7264-7288. [DOI: 10.1021/acs.jmedchem.9b00891] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | | | | | | | - Lei Xu
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yubo Zhou
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | | | | | - Gang Cheng
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 311402, China
| | | | - Jia Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yanfei Shao
- Department of Pharmacy, Zhejiang Provincial People’s Hospital, Hangzhou 310014, China
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Weng Q, Hu X, Zheng J, Xia F, Wang N, Liao H, Liu Y, Kim D, Liu J, Li F, He Q, Yang B, Chen C, Hyeon T, Ling D. Toxicological Risk Assessments of Iron Oxide Nanocluster- and Gadolinium-Based T1MRI Contrast Agents in Renal Failure Rats. ACS Nano 2019; 13:6801-6812. [PMID: 31141658 DOI: 10.1021/acsnano.9b01511] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Gadolinium-based contrast agents (GBCAs) are widely used for T1-weighted magnetic resonance imaging (MRI) in clinic diagnosis. However, a major drawback of GBCAs is that they can increase the toxicological risk of nephrogenic systemic fibrosis (NSF) in patients with advanced renal dysfunction. Hence, safer alternatives to GBCAs are currently in demand, especially for patients with renal diseases. Here we investigated the potential of polyethylene glycol (PEG)-stabilized iron oxide nanoclusters (IONCs) as biocompatible T1MRI contrast agents and systematically evaluated their NSF-related risk in rats with renal failure. We profiled the distribution, excretion, histopathological alterations, and fibrotic gene expressions after administration of IONCs and GBCAs. Our results showed that, compared with GBCAs, IONCs exhibited dramatically improved biosafety and a much lower risk of causing NSF, suggesting the feasibility of substituting GBCAs with IONCs in clinical MRI diagnosis of patients with renal diseases.
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Affiliation(s)
- Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
- Center for Drug Safety Evaluation and Research , Zhejiang University , Hangzhou 310058 , China
| | | | - Jiahuan Zheng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | | | | | | | - Ying Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, and CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Dokyoon Kim
- Department of Bionano Engineering , Hanyang University , Ansan 15588 , Korea
- Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 08826 , Korea
| | - Jianan Liu
- Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 08826 , Korea
- School of Chemical and Biological Engineering , Seoul National University , Seoul 08826 , Korea
| | | | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
| | - Chunying Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, and CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology of China and University of Chinese Academy of Sciences , Beijing 100190 , China
| | - Taeghwan Hyeon
- Center for Nanoparticle Research , Institute for Basic Science (IBS) , Seoul 08826 , Korea
- School of Chemical and Biological Engineering , Seoul National University , Seoul 08826 , Korea
| | - Daishun Ling
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences , Zhejiang University , Hangzhou 310058 , China
- Key Laboratory of Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering & Instrument Science , Zhejiang University , Hangzhou 310058 , China
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Weng Q, Zhao M, Zheng J, Yang L, Xu Z, Zhang Z, Wang J, Wang J, Yang B, Richard Lu Q, Ying M, He Q. STAT3 dictates β-cell apoptosis by modulating PTEN in streptozocin-induced hyperglycemia. Cell Death Differ 2019; 27:130-145. [PMID: 31097787 DOI: 10.1038/s41418-019-0344-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 03/31/2019] [Accepted: 04/19/2019] [Indexed: 02/07/2023] Open
Abstract
Insufficient pancreatic β-cell mass or insulin-producing β-cells are implicated in all forms of diabetes mellitus. However, the molecular mechanisms underlying β-cell destruction are complex and not fully defined. Here we observed that activation of STAT3 is intensely and specifically inhibited in β-cells under hyperglycemic conditions. By knocking out STAT3 specifically in mouse β-cells, we found that the loss of STAT3 sensitized mice to three low doses of STZ stimulation resulting in hyperglycemia. Mechanistically, accumulating PTEN, induced by STAT3 deficiency, directly represses phosphorylation of AKT, which negatively modulates transcription factor activation, dysregulates β-cell function, positively promotes apoptotic signaling, and finally induces β-cell apoptosis. Notably, the defective secretion of insulin and β-cells apoptosis was completely rescued by PTEN ablation in STAT3-null islets or PTEN inhibitor bpv(phen) treatment. Thus our data suggest that STAT3 is a vital modulator of β-cell survival and function, highlighting a critical role for STAT3 in the negative regulation of PTEN-AKT signaling pathway associated with β-cell dysfunction and apoptosis.
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Affiliation(s)
- Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.,Center for Drug Safety Evaluation and Research of Zhejiang University, 310058, Hangzhou, China
| | - Mengting Zhao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jiahuan Zheng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Lijun Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Zijie Xu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Zhikang Zhang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jincheng Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Jiajia Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China
| | - Q Richard Lu
- Division of Experimental Hematology and Cancer Biology, Brain Tumor Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Meidan Ying
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China.
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, 310058, Hangzhou, China. .,Center for Drug Safety Evaluation and Research of Zhejiang University, 310058, Hangzhou, China.
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55
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Yang X, Weng Q, Hu L, Yang L, Wang X, Xiang X, Hong B, Gong X, Wang Q. Increased interleukin-22 levels in lupus nephritis and its associated with disease severity: a study in both patients and lupus-like mice model. Clin Exp Rheumatol 2019; 37:400-407. [PMID: 30299250] [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: 04/06/2018] [Accepted: 06/29/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVES Interleukin-22 (IL-22) has been considered as an inflammatory cytokine. In the present study, we investigated the potential role of IL-22 in lupus nephritis (LN). METHODS We examined the IL-22 levels of serum and kidney tissue from LN patients and MRL/lpr mice. An intraperitoneal injection of saline, isotype control antibody (IgG), prednisone (3mg/kg/mouse), or anti-IL-22 mAb (5μg/kg/mouse or 25μg/kg/mouse) was administered twice a week from 6 to 18 weeks of age. RESULTS IL-22 levels in both serum and kidney were significantly higher in LN patients as compared with those in healthy controls. The serum and renal levels of IL-22 in MRL/lpr mice were significantly increased over time. After MRL/lpr mice were treated with anti-IL-22 monoclonal antibody (mAb) for 12 weeks, significantly less urine protein and lower serum levels of creatinine and urea nitrogen were found. In addition, less renal injury score and few number of inflammatory cells per glomerulus were observed in MRL/lpr mice treated with anti-IL-22 mAb as compared with control groups. CONCLUSIONS Our results suggest that IL-22 as a pathogenic cytokine might be a potential target for treatment of lupus nephritis.
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Affiliation(s)
- Xuyan Yang
- Department of Rheumatology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
| | - Qinjie Weng
- Institute of Pharmacology, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
| | - Lingzhen Hu
- Department of Rheumatology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lijun Yang
- Institute of Pharmacology, College of Pharmaceutical Science, Zhejiang University, Hangzhou, China
| | - Xingxing Wang
- Department of Rheumatology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xueping Xiang
- Department of Pathology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Bo Hong
- Department of Pathology, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xubo Gong
- Laboratory of Bone Marrow, Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Qingqing Wang
- Department of immunology, Institute of Basic Medical Sciences, College of Medicine, Zhejiang University, Hangzhou, China
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56
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Wang J, Wang J, Wang J, Yang B, Weng Q, He Q. Targeting Microglia and Macrophages: A Potential Treatment Strategy for Multiple Sclerosis. Front Pharmacol 2019; 10:286. [PMID: 30967783 PMCID: PMC6438858 DOI: 10.3389/fphar.2019.00286] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [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: 12/04/2018] [Accepted: 03/08/2019] [Indexed: 12/11/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory neurodegenerative disease of the central nervous system (CNS). The early stage is characterized by relapses and the later stage, by progressive disability. Results from experimental and clinical investigations have demonstrated that microglia and macrophages play a key part in the disease course. These cells actively initiate immune infiltration and the demyelination cascade during the early phase of the disease; however, they promote remyelination and alleviate disease in later stages. This review aims to provide a comprehensive overview of the existing knowledge regarding the neuromodulatory function of macrophages and microglia in the healthy and injured CNS, and it discusses the feasibility of harnessing microglia and macrophage physiology to treat MS. The review encourages further investigations into macrophage-targeted therapy, as well as macrophage-based drug delivery, for realizing efficient treatment strategies for MS.
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Affiliation(s)
- Jiaying Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jiajia Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jincheng Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Center for Drug Safety Evaluation and Research, Zhejiang University, Hangzhou, China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Center for Drug Safety Evaluation and Research, Zhejiang University, Hangzhou, China
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57
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Weng Q, Che J, Zhang Z, Zheng J, Zhan W, Lin S, Tian T, Wang J, Gai R, Hu Y, Yang B, He Q, Dong X. Phenotypic Screening-Based Identification of 3,4-Disubstituted Piperidine Derivatives as Macrophage M2 Polarization Modulators: An Opportunity for Treating Multiple Sclerosis. J Med Chem 2019; 62:3268-3285. [PMID: 30856328 DOI: 10.1021/acs.jmedchem.8b01635] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Multiple sclerosis (MS) is a disease of the autoimmune-mediated disorder in the central nervous system, for which no effective therapeutic agent is currently available. The regulation of macrophage polarization toward M2 is a general benefit for treating MS. The gene biomarker-based phenotypic screening approach was developed, and 3,4-disubstituted piperidine derivative S-28 was identified as a lead compound modulating macrophage M2 polarization. Further SAR studies resulted in the discovery of the most potent modulator D11 that showed good oral bioavailability and significant in vivo therapeutic effects. Mechanistic studies demonstrated that the M2 polarization macrophages modulated by D11 mainly functioned through inhibiting the proliferation of T-cells and activating the phosphorylation of Stat3 and Akt. Therefore, the gene biomarker-based phenotypic screening was demonstrated as a promising tool for the discovery of novel macrophage M2 polarization modulators. Compound D11 may serve as a promising starting point for the development of therapeutics to treat MS.
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Cao J, Dong R, Jiang L, Gong Y, Yuan M, You J, Meng W, Chen Z, Zhang N, Weng Q, Zhu H, He Q, Ying M, Yang B. LncRNA-MM2P Identified as a Modulator of Macrophage M2 Polarization. Cancer Immunol Res 2019; 7:292-305. [PMID: 30459152 DOI: 10.1158/2326-6066.cir-18-0145] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [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: 03/08/2018] [Revised: 09/01/2018] [Accepted: 11/16/2018] [Indexed: 11/16/2022]
Abstract
M2 polarization of macrophages is essential for their function in immunologic tolerance, which might promote tumorigenesis. However, the molecular mechanism behind the polarization process is not fully understood. Given that several lines of evidence have suggested that long noncoding RNAs (lncRNAs) could be involved in regulating immune cell differentiation and function, the current study aimed to identify the lncRNAs that specifically modulate M2 macrophage polarization. By utilizing a series of cell-based M2 macrophage polarization models, a total of 25 lncRNAs with altered expression were documented based on lncRNA microarray-based profiling assays. Among them, lncRNA-MM2P was the only lncRNA upregulated during M2 polarization but downregulated in M1 macrophages. Knockdown of lncRNA-MM2P blocked cytokine-driven M2 polarization of macrophages and weakened the angiogenesis-promoting feature of M2 macrophages by reducing phosphorylation on STAT6. Moreover, manipulating lncRNA-MM2P in macrophages impaired macrophage-mediated promotion of tumorigenesis, tumor growth in vivo, and tumor angiogenesis. Collectively, our study identifies lncRNA-MM2P as a modulator required for macrophage M2 polarization and uncovers its role in macrophage-promoted tumorigenesis.
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Affiliation(s)
- Ji Cao
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Rong Dong
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Li Jiang
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Yanling Gong
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Meng Yuan
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jieqiong You
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Wen Meng
- Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhanlei Chen
- Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Ning Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Zhejiang University, Zhejiang University, Hangzhou, China
| | - Qinjie Weng
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Hong Zhu
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Qiaojun He
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Meidan Ying
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
| | - Bo Yang
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
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Liu Q, Xie W, Xiao Y, Gao F, Gao Q, Zhang H, Han Y, Yuan Z, Weng Q. Seasonal expressions of oxytocin and oxytocin receptor in epididymis of the male muskrat (Ondatra zibethicus). Theriogenology 2019; 124:24-31. [DOI: 10.1016/j.theriogenology.2018.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/03/2018] [Accepted: 10/06/2018] [Indexed: 01/09/2023]
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Liu Z, Li H, Hong C, Chen M, Yue T, Chen C, Wang Z, You Q, Li C, Weng Q, Xie H, Hu R. ALS-Associated E478G Mutation in Human OPTN (Optineurin) Promotes Inflammation and Induces Neuronal Cell Death. Front Immunol 2018; 9:2647. [PMID: 30519240 PMCID: PMC6251386 DOI: 10.3389/fimmu.2018.02647] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 03/16/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a group of neurodegenerative disorders that featured with the death of motor neurons, which leads to loss of voluntary control on muscles. The etiologies vary among different subtypes of ALS, and no effective management or medication could be provided to the patients, with the underlying mechanisms incompletely understood yet. Mutations in human Optn (Optineurin), particularly E478G, have been found in many ALS patients. In this work, we report that NF-κB activity was increased in Optn knockout (Optn−/−) MEF (mouse embryonic fibroblast) cells expressing OPTN of different ALS-associated mutants especially E478G. Inflammation was significantly activated in mice infected with lenti-virus that allowed overexpression of OPTNE478G mutation in the motor cortex, with marked increase in the secretion of pro-inflammatory cytokines as well as neuronal cell death. Our work with both cell and animal models strongly suggested that anti-inflammation treatment could represent a powerful strategy to intervene into disease progression in ALS patients who possess the distinctive mutations in OPTN gene.
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Affiliation(s)
- Zhengzhao Liu
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Injury, Aging and Regenerative Medicine, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Hongming Li
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Chungu Hong
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Menglu Chen
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Tao Yue
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Chunyuan Chen
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Zhenxing Wang
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Qing You
- State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Innovation Center for Cell Signaling Network, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China.,Department of life science, Shanghai Tech University, Shanghai, China
| | - Chuanyin Li
- State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Innovation Center for Cell Signaling Network, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China.,Department of life science, Shanghai Tech University, Shanghai, China
| | - Qinjie Weng
- Institute of Pharmacology and Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Center for Drug Safety Evaluation and Research, Zhejiang University, Hangzhou, China
| | - Hui Xie
- Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Organ Injury, Aging and Regenerative Medicine, Changsha, China.,Department of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China.,Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Changsha, China
| | - Ronggui Hu
- State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Innovation Center for Cell Signaling Network, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Shanghai, China.,Department of life science, Shanghai Tech University, Shanghai, China
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Li P, Zhang F, Weng Q, Zhao L, Zhou Y, Li Y, Li Q, Ni C, Yang X. 4:10 PM Abstract No. 50 Intratumoral radiofrequency hyperthermia-enhanced herpes simplex virus thymidine kinase (HSV-TK) gene therapy of orthotopic lung cancer through the augmentation of apoptosis and heat shock protein (HSP70) expression pathway. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.059] [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: 11/29/2022] Open
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Abstract
OBJECTIVE The use of hormone replacement therapy (HRT) started later in China than in European countries. The purpose of the present study was to investigate HRT patterns and reasons for the initiation and discontinuation of HRT among women in South China. METHODS A telephone survey about menopausal status, the use of HRT, reasons for HRT discontinuation and duration of HRT treatment was conducted in 2014. RESULTS A total of 825 telephone surveys were carried out, and 217 previous HRT users and 390 current users were recruited for this study. Among these 607 subjects, 50.7% of the women sought out HRT for hot flushes, 41.6% for fatigue and 41.5% for sleeplessness. Approximately one-third (35.9%) of the patients abandoned HRT during the following year. The reasons for stopping HRT were mainly fear of breast and uterine cancer (28.4%), reduced menopausal symptoms (22.9%) and the inconvenience of taking pills or seeing a doctor (17.9%). The factors related to HRT discontinuation were the age when HRT was initiated (odds ratio 1.59, 95% confidence interval 1.19-2.13) and education level (odds ratio 0.78, 95% confidence interval 0.62-0.98). CONCLUSIONS The duration of HRT use in women in south China was short, and a high proportion of the women discontinued HRT. Given the high discontinuation rate and the low medical compliance, Chinese health-care providers still have much to do to let women know about the advantages and disadvantages of HRT and to encourage the use of HRT appropriately.
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Affiliation(s)
- K Chu
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
| | - Y Song
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
| | - N D Chatooah
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
| | - Q Weng
- b Yuhang First Hospital , Hangzhou , PR China
| | - Q Ying
- c Zhejiang Cancer Hospital , Hangzhou , PR China
| | - L Ma
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
| | - F Qu
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
| | - J Zhou
- a School of Medicine , Women's Hospital, Zhejiang University , Hangzhou , PR China
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Affiliation(s)
- M. Zhu
- College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
| | - Q. Weng
- College of Biological Sciences and Biotechnology Beijing Forestry University Beijing China
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Weng Q, Li X, Ren H, Xie J, Pan X, Xu J, Chen N. Membranous nephropathy associated with hepatitis C virus infection treated with corticosteroids and Ledipasvir-Sofosbuvir: a case report and review of literature. Oncotarget 2017; 8:22299-22303. [PMID: 28223549 PMCID: PMC5400664 DOI: 10.18632/oncotarget.15397] [Citation(s) in RCA: 7] [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] [Received: 10/02/2016] [Accepted: 01/25/2017] [Indexed: 01/26/2023] Open
Abstract
Background Membranous nephropathy (MN) is the most common cause of nephrotic syndrome in adults. As many clinical cases have reported, it may be associated with hepatitis C virus (HCV) infection. Antiviral therapy can be various. Case summary We report a case of patient with chronic HCV infection and MN, who presented with was proteinuria. He was treated with ledipasvir and sofosbuvir (Harvoni; Gilead Sciences, Foster City, CA) and was found to be virus-free. Conclusion We have reported this case to provide insight into whether Ledipasvir-Sofosbuvir should be administered for HCV-related glomerulonephritis.
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Affiliation(s)
- Qinjie Weng
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiao Li
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hong Ren
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jingyuan Xie
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaoxia Pan
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jing Xu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Nan Chen
- Department of Nephrology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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He Q, Luo P, Yang X, Weng Q, Ding L, Yang B. Abstract 2070: HMGB1 governs p53 to autophagic degradation via its nucleus-to-cytoplasm transport. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-2070] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
P53 is under exquisitely fine regulation and acts as a transcription factor that regulates the expression of thousands of genes that control apoptosis, necroptosis, ferrotosis, cell cycle arrest, senescence, metabolism and fertility. Regulation of p53 turnover is essential not only for the response to chemotherapeutic drugs or radiation in cancer cell but also to keep p53 activity under control in a normal cell. Moreover, .p53 is found to be overactivated in various diseases including idiopathic pulmonary fibrosis (IPF), alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD). Promoting hyperactivated-p53 degradation can combat these diseases. However, the strategies that based on known proteasome-dependent degradation only can stabilize the expression level of p53 such as nutlins (inhibit the interaction between mdm2 and tumor suppressor p53). Autophagy-lysosomal degradation is the other pathway for controlling cellular protein stability. More and more researches have established that numerous proteins can be degraded through both proteasome and autophagy-lysosome pathways. However, very little is known to date about p53 turnover through autophagy-lysosome pathway. Here we discover that the activation of p53 autophagic degradation during an oral small molecule receptor tyrosine kinase inhibitor sunitinib in p53 wt cancer cells and normal cells. Mechanistically, the nucleus-to-cytoplasm shift is essential for the autophagic degradation of p53 induced by sunitinib, however, does not require p53 nuclear export signals. Indeed, p53 degradation is achieved by the nucleus-to-cytoplasm transport of its nuclear binding target HMGB1, shifting the distribution of p53 from the nucleus to the cytoplasm. Then cytoplasmic p53 directly interacts with the autophagy cargo receptor p62 to promote degradation. Importantly, inhibition of HMGB1 sensitizes cancer cell to sunitinib. Taken together, our study identified an alternative p53 protein turnover mechanism induced by sunitinib, thus not only elucidating the underlying mechanisms that limit sunitinib efficacy in cancer therapy but also opening an avenue for expanding the clinical indications of sunitinib.
Note: This abstract was not presented at the meeting.
Citation Format: Qiaojun He, Peihua Luo, Xiaochun Yang, Qinjie Weng, Ling Ding, Bo Yang. HMGB1 governs p53 to autophagic degradation via its nucleus-to-cytoplasm transport [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 2070. doi:10.1158/1538-7445.AM2017-2070
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Affiliation(s)
- Qiaojun He
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
| | - Peihua Luo
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
| | - Xiaochun Yang
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
| | - Qinjie Weng
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
| | - Ling Ding
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
| | - Bo Yang
- Zhejiang Univ. College of Pharmaceutical Sci., Hangzhou, China
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66
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Weng Q, Wang J, Wang J, Tan B, Wang J, Wang H, Zheng T, Lu QR, Yang B, He Q. Folate Metabolism Regulates Oligodendrocyte Survival and Differentiation by Modulating AMPKα Activity. Sci Rep 2017; 7:1705. [PMID: 28496133 PMCID: PMC5431811 DOI: 10.1038/s41598-017-01732-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 04/03/2017] [Indexed: 01/13/2023] Open
Abstract
Folate, an essential micronutrient, is a critical cofactor in one-carbon metabolism for many cellular pathways including DNA synthesis, metabolism and maintenance. Folate deficiency has been associated with an increased risk of neurological disease, cancer and cognitive dysfunction. Dihydrofolate reductase (DHFR) is a key enzyme to regulate folate metabolism, however folate/DHFR activity in oligodendrocyte development has not been fully understood. Here we show that folate enhances oligodendrocyte maturation both in vitro and in vivo, which is accompanied with upregulation of oligodendrocyte-specific DHFR expression. On the other hand, pharmacological inhibition of DHFR by methotrexate (MTX) causes severe defects in oligodendrocyte survival and differentiation, which could be reversed by folate intake. We further demonstrate that folate activates a metabolic regulator AMPKα to promote oligodendrocyte survival and differentiation. Moreover, activation of AMPKα partially rescues oligodendrocyte defects caused by DHFR-inhibition both in vitro and in vivo. Taken together, these findings identify a previously uncharacterized role of folate/DHFR/AMPKα axis in regulating oligodendrocyte survival and myelination during CNS development.
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Affiliation(s)
- Qinjie Weng
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.,Center for drug safety Evaluation and Research, Zhejiang University, Hangzhou, China
| | - Jiajia Wang
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jiaying Wang
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Biqin Tan
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Jing Wang
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Haibo Wang
- Department of Pediatrics, Brain Tumor Center, Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Tao Zheng
- School of Preclinical and Forensic Medicine, West China Second Hospital, Sichuan University, Chengdu, China
| | - Q Richard Lu
- Department of Pediatrics, Brain Tumor Center, Cancer and Blood Disease Institute, Cincinnati Children's Hospital Medical Center, OH, USA
| | - Bo Yang
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
| | - Qiaojun He
- Institute of Pharmacology & Toxicology, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China. .,Center for drug safety Evaluation and Research, Zhejiang University, Hangzhou, China.
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Li B, Luo H, Weng Q, Wang S, Pan Z, Xie Z, Wu W, Liu H, Li Q. Differential DNA methylation of the meiosis-specific geneFKBP6in testes of yak and cattle-yak hybrids. Reprod Domest Anim 2016; 51:1030-1038. [DOI: 10.1111/rda.12794] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 08/17/2016] [Indexed: 12/15/2022]
Affiliation(s)
- B Li
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - H Luo
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Q Weng
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - S Wang
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Z Pan
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Z Xie
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - W Wu
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - H Liu
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
| | - Q Li
- College of Animal Science and Technology; Nanjing Agricultural University; Nanjing China
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68
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Zhang F, Wang J, Jiao Y, Zhang L, Zhang H, Sheng X, Han Y, Yuan Z, Weng Q. Seasonal changes of androgen receptor, estrogen receptors and aromatase expression in the medial preoptic area of the wild male ground squirrels (Citellus dauricus Brandt). Eur J Histochem 2016; 60:2621. [PMID: 27349316 PMCID: PMC4933827 DOI: 10.4081/ejh.2016.2621] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 04/10/2016] [Accepted: 04/11/2016] [Indexed: 11/25/2022] Open
Abstract
The wild ground squirrel is a typical seasonal breeder. In this study, using RT-PCR, western blot and immunohistochemistry, we investigated the mRNA and protein expressions of androgen receptor (AR), estrogen receptors a and β (ERα and ERβ) and aromatase cytochrome P450 (P450arom) in the medial preoptic area (MPOA) of hypothalamus of the wild male ground squirrel during the breeding season (April), the non-breeding season (June) and pre-hibernation (September). AR, ERα, ERβ and P450arom protein/mRNA were present in the MPOA of all seasons detected. The immunostaining of AR and ERα showed no significant changes in different periods, whereas ERβ and P450arom had higher immunoreactivities during the breeding season and pre-hibernation when compared to those of the non-breeding season. Consistently, both the protein and mRNA levels of P450arom and ERβ were higher in the MPOA of pre-hibernation and the breeding season than in the non-breeding season, whereas no significant difference amongst the three periods was observed for AR and ERα levels. These findings suggested that the MPOA of hypothalamus may be a direct target of androgen and estrogen. Androgen may play important regulatory roles through its receptor and/or the aromatized estrogen in the MPOA of hypothalamus of the wild male ground squirrels.
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Affiliation(s)
- F Zhang
- Beijing Forestry University.
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69
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Jiang L, Zhang M, Tang L, Weng Q, Shen Y, Hu Y, Sheng R. Identification of 2-subsituted benzothiazole derivatives as triple-functional agents with potential for AD therapy. RSC Adv 2016. [DOI: 10.1039/c5ra25788c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
A series of 2-subsituted benzothiazole derivatives were designed and synthesized as MDTLs for potential AD therapy.
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Affiliation(s)
- Liu Jiang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Minkui Zhang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Li Tang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Qinjie Weng
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Yanhong Shen
- College of Chemistry and Environmental Science
- Anyang Institute of Technology
- Anyang 455000
- China
| | - Yongzhou Hu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Rong Sheng
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
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70
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Zhang H, Wang Y, Zhang J, Wang L, Li Q, Sheng X, Han Y, Yuan Z, Weng Q. Testicular expression of NGF, TrkA and p75 during seasonal spermatogenesis of the wild ground squirrel (Citellus dauricus Brandt). Eur J Histochem 2015; 59:2522. [PMID: 26428886 PMCID: PMC4598598 DOI: 10.4081/ejh.2015.2522] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 06/23/2015] [Accepted: 06/24/2015] [Indexed: 01/03/2023] Open
Abstract
The nerve growth factor (NGF) not only has an essential effect on the nervous system, but also plays an important role in a variety of non-neuronal systems, such as the reproductive system. The aim of this study was to compare the quality and quantity in expression of NGF and its receptors (TrkA and p75) in testes of the wild ground squirrel during the breeding and nonbreeding seasons. Immunolocalization for NGF was detected mainly in Leydig cells and Sertoli cells in testes of the breeding and nonbreeding seasons. The immunoreactivity of TrkA was highest in the elongated spermatids, whereas p75 in spermatogonia and spermatocytes in testes of the breeding season. In the nonbreeding season testes, TrkA showed positive immunostainings in Leydig cells, spermatogonia and primary spermatocytes, while p75 showed positive signals in spermatogonia and primary spermatocytes. Consistent with the immunohistochemical results, the mean mRNA and protein level of NGF and TrkA were higher in the testes of the breeding season than in non-breeding season, and then decreased to a relatively low level in the nonbreeding season. In addition, the concentration of plasma gonadotropins and testosterone were assayed by radioimmunoassay (RIA), and the results showed a significant difference between the breeding and nonbreeding seasons with higher concentrations in breeding season. In conclusion, these results of this study provide the first evidence on the potential involvement of NGF and its receptor, TrkA and p75 in the seasonal spermatogenesis and testicular function change of the wild ground squirrel.
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Affiliation(s)
- H Zhang
- Beijing Forestry University.
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Zhang J, Cao J, Ma S, Dong R, Meng W, Ying M, Weng Q, Chen Z, Ma J, Fang Q, He Q, Yang B. Tumor hypoxia enhances Non-Small Cell Lung Cancer metastasis by selectively promoting macrophage M2 polarization through the activation of ERK signaling. Oncotarget 2015; 5:9664-77. [PMID: 25313135 PMCID: PMC4259428 DOI: 10.18632/oncotarget.1856] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [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: 01/22/2023] Open
Abstract
Hypoxia is a common phenomenon occurring in the majority of human tumors and has been proved to play an important role in tumor progression. However, it remains unclear that whether the action of hypoxia on macrophages is a main driving force of hypoxia-mediated aggressive tumor behaviors. In the present study, we observe that high density of M2 macrophages is associated with metastasis in adenocarcinoma Non-Small Cell Lung Cancer (NSCLC) patients. By applying the in vivo hypoxia model, the results suggest that intermittent hypoxia significantly promotes the metastasis of Lewis lung carcinoma (LLC), accompanied with more CD209+ macrophages infiltrated in primary tumor tissue. More intriguingly, by skewing macrophages polarization away from the M1- to a tumor-promoting M2-like phenotype, hypoxia and IL-6 cooperate to enhance the LLC metastasis both in vitro and in vivo. In addition, we also demonstrate that skewing of macrophage M2 polarization by hypoxia relies substantially on activation of ERK signaling. Collectively, these observations unveil a novel tumor hypoxia concept involving the macrophage phenotype shift and provide direct evidence for lung cancer intervention through modulating the phenotype of macrophages.
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Affiliation(s)
- Jun Zhang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Ji Cao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Shenglin Ma
- Hangzhou First People's Hospital, Huansha Road, Hangzhou, China. The second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Rong Dong
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Wen Meng
- Hangzhou First People's Hospital, Huansha Road, Hangzhou, China
| | - Meidan Ying
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Zibo Chen
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
| | - Jian Ma
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Qingxia Fang
- Zhejiang Provincial People's hospital, Shangtang Road, Hangzhou, China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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73
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Zhu H, Luo P, Fu Y, Wang J, Dai J, Shao J, Yang X, Chang L, Weng Q, Yang B, He Q. Dihydromyricetin prevents cardiotoxicity and enhances anticancer activity induced by adriamycin. Oncotarget 2015; 6:3254-67. [PMID: 25226612 PMCID: PMC4413651 DOI: 10.18632/oncotarget.2410] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [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: 07/17/2014] [Accepted: 08/28/2014] [Indexed: 01/08/2023] Open
Abstract
Adriamycin, a widely used anthracycline antibiotic in multiple chemotherapy regimens, has been challenged by the cardiotoxicity leading to fatal congestive heart failure in the worst condition. The present study demonstrated that Dihydromyricetin, a natural product extracted from ampelopsis grossedentat, exerted cardioprotective effect against the injury in Adriamycin-administrated ICR mice. Dihydromyricetin decreased ALT, LDH and CKMB levels in mice serum, causing a significant reduction in the toxic death triggered by Adriamycin. The protective effects were also indicated by the alleviation of abnormal electrocardiographic changes, the abrogation of proliferation arrest and apoptotic cell death in primary myocardial cells. Further study revealed that Dihydromyricetin-rescued loss of anti-apoptosis protein ARC provoked by Adriamycin was involved in the cardioprotection. Intriguingly, the anticancer activity of Adriamycin was not compromised upon the combination with Dihydromyricetin, as demonstrated by the enhanced anticancer effect achieved by Adriamycin plus Dihydromyricetin in human leukemia U937 cells and xenograft models, in a p53-dependent manner. These results collectively promised the potential value of Dihydromyricetin as a rational cardioprotective agent of Adriamycin, by protecting myocardial cells from apoptosis, while potentiating anticancer activities of Adriamycin, thus further increasing the therapeutic window of the latter one.
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MESH Headings
- Animals
- Animals, Newborn
- Antibiotics, Antineoplastic/toxicity
- Apoptosis/drug effects
- Cell Proliferation/drug effects
- Cytoprotection
- Cytoskeletal Proteins/metabolism
- Dose-Response Relationship, Drug
- Doxorubicin/toxicity
- Flavonols/pharmacology
- HL-60 Cells
- Heart Diseases/chemically induced
- Heart Diseases/metabolism
- Heart Diseases/pathology
- Heart Diseases/physiopathology
- Heart Diseases/prevention & control
- Humans
- K562 Cells
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Lymphoma, Large B-Cell, Diffuse/pathology
- Mice, Inbred BALB C
- Mice, Inbred ICR
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Nerve Tissue Proteins/metabolism
- Oxidative Stress/drug effects
- Protective Agents/pharmacology
- Proto-Oncogene Proteins c-mdm2/metabolism
- Rats
- Rats, Sprague-Dawley
- Signal Transduction/drug effects
- Time Factors
- Tumor Burden
- Tumor Suppressor Protein p53/metabolism
- U937 Cells
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Hong Zhu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Peihua Luo
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yingying Fu
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jincheng Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiabin Dai
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jinjin Shao
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiaochun Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Linlin Chang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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Li Q, Zhang F, Zhang S, Sheng X, Han X, Weng Q, Yuan Z. Seasonal expression of androgen receptor, aromatase, and estrogen receptor alpha and beta in the testis of the wild ground squirrel (Citellus dauricus Brandt). Eur J Histochem 2015; 59:2456. [PMID: 25820559 PMCID: PMC4378213 DOI: 10.4081/ejh.2015.2456] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 12/24/2014] [Accepted: 01/02/2015] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to investigate the seasonal expression of androgen receptor (AR), estrogen receptors α and β (ERα and ERβ) and aromatase cytochrome P450 (P450arom) mRNA and protein by real-time PCR and immunohistochemistry in the wild ground squirrel (WGS) testes. Histologically, all types of spermatogenic cells including mature spermatozoa were identified in the breeding season (April), while spermatogonia and primary spermatocytes were observed in the nonbreeding season (June), and spermatogonia, primary spermatocytes and secondary spermatocytes were found in pre-hibernation (September). AR was present in Leydig cells, peritubular myoid cells and Sertoli cells in the breeding season and pre-hibernation with more intense staining in the breeding season, whereas AR was only found in Leydig cells in the nonbreeding season; P450arom was expressed in Leydig cells, Sertoli cells and germ cells during the breeding season, whereas P450arom was found in Leydig cells and Sertoli cells during pre-hibernation, but P450arom was not present in the nonbreeding season; stronger immunohistochemical signal for ERα was present in Sertoli cells and Leydig cells during the breeding season; ERβ was only expressed in Leydig cells of the breeding season. Consistent with the immunohistochemical results, the mean mRNA level of AR, P450arom, ERα and ERβ were higher in the testes of the breeding season when compared to pre-hibernation and the nonbreeding season. These results suggested that the seasonal changes in spermatogenesis and testicular recrudescence and regression process in WGSs might be correlated with expression levels of AR, P450arom and ERs, and that estrogen and androgen may play an important autocrine/paracrine role to regulate seasonal testicular function.
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Affiliation(s)
- Q Li
- Beijing Forestry University.
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75
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Tan B, Wang J, Zhao M, Hu Y, Wang J, Yang B, He Q, Yang XC, Weng Q. TCF7L2 activation is required for myelin regeneration in 5-FU-induced demyelinating mice. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00110b] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Previous studies have shown that 5-FU (5-fluorouracil) could cause delayed myelin degeneration by inducing oligodendrocyte death.
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Affiliation(s)
- Biqin Tan
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Jing Wang
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Mengting Zhao
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Yan Hu
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Jiajia Wang
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Bo Yang
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - QiaoJun He
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Xiao Chun Yang
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Qinjie Weng
- Institute of Pharmacology
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
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76
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Liu Y, Weng J, Huang S, Shen Y, Sheng X, Han Y, Xu M, Weng Q. Immunoreactivities of PPARγ2, leptin and leptin receptor in oviduct of Chinese brown frog during breeding period and pre-hibernation. Eur J Histochem 2014; 58:2422. [PMID: 25308849 PMCID: PMC4194397 DOI: 10.4081/ejh.2014.2422] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 12/14/2022] Open
Abstract
The Chinese brown frog (Rana dybowskii) is a special amphibian with one unique physiological phenomenon, which is that its oviduct expands prior to hibernation, instead of during the breeding period. In this study, we investigate the localization and expression level of PPARγ2, leptin and leptin receptor proteins in oviduct of Rana dybowskii during breeding period and pre-hibernation. There were significant variations in oviductal weight and size, with values much lower in the breeding period than in pre-hibernation. PPARγ2 was observed in stromal and epithelial cells in both periods. Leptin was immunolocalized in epithelial cells in both periods, whereas leptin receptor was detected only in stromal cells. Consistently, the protein levels of PPARγ2, leptin and leptin receptor were higher in pre-hibernation as compared to the breeding period. These results suggested that oviduct was the target organ of leptin, which may play an important paracrine role in regulating the oviductal hypertrophy during prehibernation.
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Affiliation(s)
- Y Liu
- Beijing Forestry University.
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77
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Weng Q, Tan B, Wang J, Wang J, Zhou H, Shi J, He Q, Yang B. 5-Fluorouracil causes severe CNS demyelination by disruption of TCF7L2/HDAC1/HDAC2 complex in adolescent mice. Toxicology 2014; 325:144-50. [PMID: 25178657 DOI: 10.1016/j.tox.2014.08.011] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/06/2014] [Accepted: 08/27/2014] [Indexed: 11/29/2022]
Abstract
Several studies have showed the anti-cancer efficacy of 5-FU (5-fluorouracil) on pediatric tumors. Although the delayed demyelination induced by 5-FU in adult patients has been reported, the effect of 5-FU on oligodendrocyte myelination in adolescence is still unknown. Here, we demonstrate that systemic administration with 5-FU leads to immediate demyelination in the central nervous system (CNS) of adolescent mice, which is mainly attributed to the death of OLs. Gene-chip microarray transcriptome analysis identifies that oligodendrocyte-specific factor TCF7L2 may be a toxic target of 5-FU-impaired myelination. 5-FU-decreased TCF7L2 results in disruption of the interaction between TCF7L2 and HDAC1/2. Inhibition of crucial myelination-promoting factors by 5-FU is more significantly antagonized by co-transfection of TCF7L2, HDAC1 and HDAC2 than TCF7L2 alone. Our findings reveal that 5-FU could acutely induce the severe myelin degeneration in adolescence and disruption of TCF7L2/HDAC1/HDAC2 complex is at least partially involved in 5-FU-induced demyelination.
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Affiliation(s)
- Qinjie Weng
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Center for Drug Safety Evaluation and Research, Zhejiang University, Hangzhou 310058, China.
| | - Biqin Tan
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiajia Wang
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jing Wang
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hui Zhou
- Departments of Pediatrics and Obstetrics/Gynecology, Institute of Stem Cell and Developmental Biology, West China Second Hospital, Chengdu 61004, China
| | - Jing Shi
- Departments of Pediatrics and Obstetrics/Gynecology, Institute of Stem Cell and Developmental Biology, West China Second Hospital, Chengdu 61004, China
| | - QiaoJun He
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China; Center for Drug Safety Evaluation and Research, Zhejiang University, Hangzhou 310058, China
| | - Bo Yang
- Institute of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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78
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Weng Q, Zhou H, Wang L, He S. Orthographic and lexical sensitivity to words in the ventral occipitotemporal cortex. J Vis 2014. [DOI: 10.1167/14.10.180] [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: 11/24/2022] Open
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79
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Bao L, Li Q, Liu Y, Li B, Sheng X, Han Y, Weng Q. Immunolocalization of NGF and its receptors in ovarian surface epithelium of the wild ground squirrel during the breeding and nonbreeding seasons. Eur J Histochem 2014; 58:2363. [PMID: 24998925 PMCID: PMC4083325 DOI: 10.4081/ejh.2014.2363] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 03/12/2014] [Accepted: 03/12/2014] [Indexed: 01/17/2023] Open
Abstract
The ovarian surface epithelium (OSE) plays an important role in normal ovarian physiology. During each reproductive cycle, the OSE takes part in the cyclical ovulatory ruptures and repair. The aim of this study was to investigate the immunolocalization of nerve growth factor (NGF) and its receptors, tyrosine kinase A (TrkA) and p75, in the OSE cells of the wild ground squirrels during the breeding and nonbreeding seasons. There were marked variations in ovarian weight and size between the breeding and the nonbreeding seasons. Histologically, cuboidal cells and squamous cells were identified in the OSE of both seasons. Yet, stronger immunostaining of NGF, TrkA and p75 were observed in cuboidal cells and squamous cells in the breeding season as compared to the nonbreeding season. In addition, plasma gonadotropin concentrations were higher in the breeding season than in the nonbreeding season, suggesting that the expression patterns of NGF, TrkA and p75 in the OSE were correlated with changes in plasma gonadotropins. These findings suggested that NGF and its receptor TrkA and p75 may be involved in the regulation of seasonal changes in the OSE of wild ground squirrel.
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Affiliation(s)
- L Bao
- Inner Mongolia University for Nationalities.
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80
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Wu J, Chen W, Xia G, Zhang J, Shao J, Tan B, Zhang C, Yu W, Weng Q, Liu H, Hu M, Deng H, Hao Y, Shen J, Yu Y. Design, Synthesis, and Biological Evaluation of Novel Conformationally Constrained Inhibitors Targeting EGFR. ACS Med Chem Lett 2013; 4:974-8. [PMID: 24900594 DOI: 10.1021/ml4002437] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 08/06/2013] [Indexed: 01/08/2023] Open
Abstract
This letter describes the construction of conformationally constrained quinazoline analogues. Structure-activity relationship studies led to the identification of the lead compound 9n . Compound 9n exhibits effective in vitro activity against A431(WT,overexpression) and H1975([L858R/T790M]) cancer cell lines but is significantly less effective against EGFR negative cancer cell lines (SW620, A549, and K562). Compound 9n was also assessed for potency in enzymatic assays and in vivo antitumor studies. The results indicated that 9n is a potent kinase inhibitor against both wild-type and T790M mutant EGFR kinase. Meanwhile, an oral administration of 9n at a dose of 200 mg/kg produced a considerable antitumor effect in a A431 xenograft model, as compared to gefitinib. A preliminary pharmacokinetic study of 9n also indicates it has good pharmacokinetic properties, and therefore, it is a good starting point for further development.
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Affiliation(s)
- Jianwei Wu
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Wenteng Chen
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Guangxin Xia
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Jing Zhang
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Jiaan Shao
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Biqin Tan
- School of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Chunchun Zhang
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Wanwan Yu
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Qinjie Weng
- School of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Haiyan Liu
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Miao Hu
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
| | - Hailin Deng
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Yu Hao
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
| | - Jingkang Shen
- Central Research Institute, Shanghai Pharmaceuticals Holding Co., Ltd., Building
5, No. 898 Ha Lei Road, Shanghai, China
- State Key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, 555 Zu Chong Zhi Road, Shanghai
201203, China
| | - Yongping Yu
- Zhejiang Province
Key Laboratory
of Anti-Cancer Drug Research, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, P. R. China
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81
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Zhang H, Nagaoka K, Imakawa K, Nambo Y, Watanabe G, Taya K, Weng Q. Expression of inhibin/activin subunits in the equine uteri during the early pregnancy. Reprod Domest Anim 2012; 48:423-8. [PMID: 23043254 DOI: 10.1111/rda.12091] [Citation(s) in RCA: 4] [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] [Received: 03/08/2012] [Accepted: 08/29/2012] [Indexed: 11/29/2022]
Abstract
The establishment of equine pregnancy is a unique and long process during which a series of physical and possibly biochemical interactions are required between the conceptus and uterus. In this study, we investigated the expression pattern of inhibin/activin subunits in the uterus during early pregnancy. The uteri from four adult mares on cyclic day 13 or pregnancy day 25 were obtained. Immunohistochemical experiments suggested that inhibin/activin subunits were immunolocalized in the luminal and glandular epithelium on pregnancy day 25. In addition, the inhibin α and inhibin/activin βB subunits were not detected, and inhibin/activin βA subunit was detected, in the luminal and glandular epithelium on cyclic day 13. Real-time polymerase chain reaction and Western blotting results for the inhibin/activin subunits suggested a significant increase in the expression of inhibin/activin subunit βB and a significant decrease in the expression of inhibin/activin subunit βA on pregnancy day 25 compared with those on cyclic day 13. Enzyme-linked immunosorbent assays suggested a significant decrease in the concentration of activin A in endometrium extracts from cyclic day 13 to pregnancy day 25. These results suggest that inhibins or activins synthesized in the uterus, as endocrine factors and necessary nutriments, have different expression patterns and may play different, important roles during early embryonic development of the equine.
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Affiliation(s)
- H Zhang
- College of Biological Science and Technology, Beijing Forestry University, Beijing, China
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82
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Weng Q, Chen Y, Wang H, Xu X, Yang B, He Q, Shou W, Chen Y, Higashi Y, van den Berghe V, Seuntjens E, Kernie S, Bukshpun P, Sherr E, Huylebroeck D, Lu Q. Dual-Mode Modulation of Smad Signaling by Smad-Interacting Protein Sip1 Is Required for Myelination in the Central Nervous System. Neuron 2012. [DOI: 10.1016/j.neuron.2012.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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83
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Weng Q, Chen Y, Wang H, Xu X, Yang B, He Q, Shou W, Chen Y, Higashi Y, van den Berghe V, Seuntjens E, Kernie SG, Bukshpun P, Sherr EH, Huylebroeck D, Lu QR. Dual-mode modulation of Smad signaling by Smad-interacting protein Sip1 is required for myelination in the central nervous system. Neuron 2012; 73:713-28. [PMID: 22365546 DOI: 10.1016/j.neuron.2011.12.021] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2011] [Indexed: 01/17/2023]
Abstract
Myelination by oligodendrocytes in the central nervous system (CNS) is essential for proper brain function, yet the molecular determinants that control this process remain poorly understood. The basic helix-loop-helix transcription factors Olig1 and Olig2 promote myelination, whereas bone morphogenetic protein (BMP) and Wnt/β-catenin signaling inhibit myelination. Here we show that these opposing regulators of myelination are functionally linked by the Olig1/2 common target Smad-interacting protein-1 (Sip1). We demonstrate that Sip1 is an essential modulator of CNS myelination. Sip1 represses differentiation inhibitory signals by antagonizing BMP receptor-activated Smad activity while activating crucial oligodendrocyte-promoting factors. Importantly, a key Sip1-activated target, Smad7, is required for oligodendrocyte differentiation and partially rescues differentiation defects caused by Sip1 loss. Smad7 promotes myelination by blocking the BMP- and β-catenin-negative regulatory pathways. Thus, our findings reveal that Sip1-mediated antagonism of inhibitory signaling is critical for promoting CNS myelination and point to new mediators for myelin repair.
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Affiliation(s)
- Qinjie Weng
- Department of Developmental Biology and Kent Waldrep Foundation Center for Basic Neuroscience Research on Nerve Growth and Regeneration, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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84
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Li Q, Weng J, Zhang H, Lu L, Ma X, Wang Q, Cao H, Liu S, Xu M, Weng Q, Watanabe G, Taya K. Immunohistochemical evidence: testicular and scented glandular androgen synthesis in muskrats (Ondatra zibethicus) during the breeding season. Eur J Histochem 2011; 55:e32. [PMID: 22297438 PMCID: PMC3284234 DOI: 10.4081/ejh.2011.e32] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 05/27/2011] [Accepted: 05/30/2011] [Indexed: 11/23/2022] Open
Abstract
In order to elucidate the relationship between androgens and the function of the muskrat (Ondatra zibethicus) scented glands during the breeding season, we investigated immunolocalization of steroidogenic enzymes P450scc, 3βHSD and P450c17 in the muskrat testes and scented glands. Nine adult muskrats were obtained in March (n=3), May (n=3) and July (n=3) 2010. Steroidogenic enzymes were immunolocalized using polyclonal antisera raised against bovine adrenal P450scc, human placental 3βHSD and porcine testicular P450c17. Histologically, all types of spermatogenic cells including mature-phase spermatozoa in seminiferous tubules were observed in all testes. Glandular cells, interstitial cells, epithelial cells and excretory tubules were identified in scented glands during the breeding season. P450scc, 3βHSD and P450c17 were only identified in Leydig cells during the breeding season; P450scc and P450c17 were observed in glandular cells of scented glands, however, 3βHSD was not found in scented glands during the breeding season. These novel findings provide the first evidence showing that scented glands of the muskrats are capable of locally synthesizing androgens and androgens acting via an endocrine, autocrine or paracrine manner may play an important role in scented gland function during the breeding season.
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Affiliation(s)
- Q Li
- College of Biological Science and Technology, Beijing Forestry University, China
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85
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Weng Q, Engel S, Kersten D, He S. Reduced adaptation from complex grating on component grating is due to automatic interaction between components independent of attention. J Vis 2011. [DOI: 10.1167/11.11.1187] [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: 11/24/2022] Open
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86
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Zhang J, Cao J, Weng Q, Wu R, Yan Y, Jing H, Zhu H, He Q, Yang B. Suppression of hypoxia-inducible factor 1α (HIF-1α) by tirapazamine is dependent on eIF2α phosphorylation rather than the mTORC1/4E-BP1 pathway. PLoS One 2010; 5:e13910. [PMID: 21085474 PMCID: PMC2976688 DOI: 10.1371/journal.pone.0013910] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Accepted: 10/19/2010] [Indexed: 02/06/2023] Open
Abstract
Hypoxia-inducible factor 1 (HIF-1), a heterodimeric transcription factor that mediates the adaptation of tumor cells and tissues to the hypoxic microenvironment, has attracted considerable interest as a potential therapeutic target. Tirapazamine (TPZ), a well-characterized bioreductive anticancer agent, is currently in Phase II and III clinical trials. A major aspect of the anticancer activity of TPZ is its identity as a tumor-specific topoisomerase IIα inhibitor. In the study, for the first time, we found that TPZ acts in a novel manner to inhibit HIF-1α accumulation driven by hypoxia or growth factors in human cancer cells and in HepG2 cell-derived tumors in athymic nude mice. We investigated the mechanism of TPZ on HIF-1α in HeLa human cervical cancer cells by western blot analysis, reverse transcription-PCR assay, luciferase reporter assay and small interfering RNA (siRNA) assay. Mechanistic studies demonstrated that neither HIF-1α mRNA levels nor HIF-1α protein degradation are affected by TPZ. However, TPZ was found to be involved in HIF-1α translational regulation. Further studies revealed that the inhibitory effect of TPZ on HIF-1α protein synthesis is dependent on the phosphorylation of translation initiation factor 2α (eIF2α) rather than the mTOR complex 1/eukaryotic initiation factor 4E-binding protein-1 (mTORC1/4E-BP1) pathway. Immunofluorescence analysis of tumor sections provide the in vivo evidences to support our hypothesis. Additionally, siRNA specifically targeting topoisomerase IIα did not reverse the ability of TPZ to inhibit HIF-1α expression, suggesting that the HIF-1α inhibitory activity of TPZ is independent of its topoisomerase IIα inhibition. In conclusion, our findings suggest that TPZ is a potent regulator of HIF-1α and provide new insight into the potential molecular mechanism whereby TPZ serves to reduce HIF-1α expression.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Antigens, Neoplasm/genetics
- Antigens, Neoplasm/metabolism
- Antineoplastic Agents/pharmacology
- Blotting, Western
- Cell Cycle Proteins
- Cell Hypoxia
- Cell Line, Tumor
- DNA Topoisomerases, Type II/genetics
- DNA Topoisomerases, Type II/metabolism
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Eukaryotic Initiation Factor-2/genetics
- Eukaryotic Initiation Factor-2/metabolism
- Female
- HEK293 Cells
- HeLa Cells
- Hep G2 Cells
- Humans
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Liver Neoplasms, Experimental/metabolism
- Liver Neoplasms, Experimental/pathology
- Mechanistic Target of Rapamycin Complex 1
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Multiprotein Complexes
- Phosphoproteins/genetics
- Phosphoproteins/metabolism
- Phosphorylation/drug effects
- Proteins/genetics
- Proteins/metabolism
- RNA Interference
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction/drug effects
- TOR Serine-Threonine Kinases
- Tirapazamine
- Transplantation, Heterologous
- Triazines/pharmacology
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Affiliation(s)
- Jun Zhang
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Ji Cao
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Qinjie Weng
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Rui Wu
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Yan Yan
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Hui Jing
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Hong Zhu
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
| | - Qiaojun He
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- * E-mail: (BY); (QH)
| | - Bo Yang
- Institute of Pharmacology and Toxicology, Zhejiang University, Hangzhou, China
- * E-mail: (BY); (QH)
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87
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Chen N, Bi T, Weng Q, He D, Fang F. Learning to discriminate face view. J Vis 2010. [DOI: 10.1167/10.7.1146] [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: 11/24/2022] Open
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88
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Wang D, Weng Q, Zhang L, He Q, Yang B. VEGF and Bcl-2 interact via MAPKs signaling pathway in the response to hypoxia in neuroblastoma. Cell Mol Neurobiol 2008; 29:391-401. [PMID: 19048366 DOI: 10.1007/s10571-008-9331-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2008] [Accepted: 11/08/2008] [Indexed: 10/21/2022]
Abstract
Tumor hypoxia has been reported to be a negative prognostic factor in a number of tumor sites, which suggests a positive correlation between tumor hypoxia and increased metastatic efficiency. Evidence shows that vascular endothelial growth factor (VEGF) stimulates angiogenesis in tumor growth and mediates neuroprotection to prevent an apoptotic cell death. Human neuroblastoma cells (CHP126) were exposed to moderate hypoxia for different time spans to explore the molecular stress responses. Apoptotic features as an increase of Bax/Bcl-2 ratio and activation of caspase 3 were observed at early period of exposure time, but these effects were reversed with the extension of hypoxic treatment. Hypoxia also activated MAPKs signaling pathways in a time-relative manner, which were involved in the regulation of hypoxia-related resistance of CHP126 cells. Meanwhile, VEGF and its receptor KDR were found to interact with MAPKs signaling pathways except the effect of hypoxia. Furthermore, rhVEGF(165) was utilized to discern that VEGF increased Bcl-2 and procaspase 3 expressions, contributing to a synergistic relationship of an angiogenic response with Bcl-2 in hypoxia via a cross talk, while the activation of ERK MAPK is important for both productions. These altered signals may be critical to predict a poor outcome; therefore, our knowledge provides new insight into apoptosis and angiogenesis control of tumor cells and suggests a strategy based on the blockade of hypoxia-induced VEGF signaling under hypoxia in neuroblastoma.
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Affiliation(s)
- Duoduo Wang
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, 388# Yuhangtang Road, Hangzhou, 310058, China
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89
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Weng Q, Wang D, Guo P, Fang L, Hu Y, He Q, Yang B. Q39, a novel synthetic Quinoxaline 1,4-Di-N-oxide compound with anti-cancer activity in hypoxia. Eur J Pharmacol 2007; 581:262-9. [PMID: 18215659 DOI: 10.1016/j.ejphar.2007.12.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Revised: 11/21/2007] [Accepted: 12/06/2007] [Indexed: 11/28/2022]
Abstract
Hypoxia is one of the inevitable circumstances in various tumors and results in tumor resistance to radiotherapy and chemotherapy. The present data showed that 3-(4-bromophenyl)-2-(ethylsulfonyl)-6-methylquinoxaline 1,4-dioxide (Q39), derived from Quinoxaline 1,4-Di-N-oxide, possessed high anti-cancer activity in hypoxia. Cytotoxicity assay demonstrated that Q39 is a potential and high efficient anti-cancer compound in all tested cell lines with IC50 values of 0.18+/-0.03-8.88+/-1.12 microM in hypoxia and 0.33+/-0.04-8.74+/-1.28 microM in normoxia . In the following work concerning the mechanism of Q39 in hypoxia, we confirmed that Q39 could cause the apoptosis of K562 cells in a time-dependent manner. By fluorescence stain assay, Q39-induced mitochondria membrane potential (Delta Psi m) loss was observed in K562 cells in hypoxia. Based on the western blotting, Q39 decreased the protein expression of hypoxia-inducible factor-1alpha (HIF-1alpha) and vascular endothelial growth factor (VEGF) in hypoxia. The compound caused the activation of caspase-3 and subsequent cleavage of its substrate poly (ADP-ribose) polymerase (PARP) in hypoxia. Meanwhile, we found the upregulation of Bax by Q39 in K562 cells as well as the downregulation of Bcl-2. Q39 also influenced the expression of Mitogen-Activated Protein Kinase (MAPKs) and other proteins relative to mitochondria induced apoptosis. In addition, Q39-mediated apoptosis was not reversed after treatment with the JNK-specific inhibitor. In summary, the present study demonstrated Q39 was a novel compound against cancer cells in hypoxia. The mitochondrial pathway mediated by Bcl-2 protein family and MAPKs and the HIF-1 pathway might be involved in signaling Q39-induced apoptosis.
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Affiliation(s)
- Qinjie Weng
- Institute of Pharmacology & Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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90
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Jiang F, Weng Q, Sheng R, Xia Q, He Q, Yang B, Hu Y. Synthesis, structure and hypoxic cytotoxicity of 3-amino-1,2,4-benzotriazine-1,4-dioxide derivatives. Arch Pharm (Weinheim) 2007; 340:258-63. [PMID: 17464965 DOI: 10.1002/ardp.200600201] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A series of novel 3-amino-1,2,4-benzotriazine-1,4-dioxide derivatives were synthesized and screened for their in vitro cytotoxicity against promyelocytic leukemia HL-60, androgen-independent prostate tumor PC3, hepatocellular carcinoma Bel-7402, human esophagus tumor ECA-109, and human breast tumor MCF-7 cell lines in hypoxia and in normoxia. Most compounds showed higher cytotoxic activity both in hypoxia and in normoxia. Among them, compounds 61 and 62 showed more potent cytotoxic activity and hypoxic selectivity when compared to tirapazamine.
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Affiliation(s)
- Faqin Jiang
- ZJU-ENS Joint Laboratory of Medicinal Chemistry, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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91
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Avruch J, Belham C, Weng Q, Hara K, Yonezawa K. The p70 S6 kinase integrates nutrient and growth signals to control translational capacity. Prog Mol Subcell Biol 2002; 26:115-54. [PMID: 11575164 DOI: 10.1007/978-3-642-56688-2_5] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- J Avruch
- Diabetes Unit and Medical Services, Department of Molecular Biology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
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92
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Abstract
A methodology is developed to relate urban growth studies to distributed hydrological modeling using an integrated approach of remote sensing and GIS. This linkage is possible because both studies share land-use and land-cover data. Landsat Thematic Mapper data are utilized to detect urban land-cover changes. GIS analyses are then conducted to examine the changing spatial patterns of urban growth. The integration of remote sensing and GIS is applied to automate the estimation of surface runoff based on the Soil Conservation Service model. Impacts of urban growth on surface runoff and the rainfall-runoff relationship are examined by linking the two modeling results with spatial analysis techniques. This methodology is applied to the Zhujiang Delta of southern China, where dramatic urban growth has occurred over the past two decades, and the rampant urban growth has created severe problems in water resources management. The results revealed a notably uneven spatial pattern of urban growth and an increase of 8.10 mm in annual runoff depth during the 1989-1997 period. An area that experienced more urban growth had a greater potential for increasing annual surface runoff. Highly urbanized areas were more prone to flooding. Urbanization lowered potential maximum storage, and thus increased runoff coefficient values.
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Affiliation(s)
- Q Weng
- Department of Geography, Geology, and Anthropology, Indiana State University, Terre Haute 47809, USA.
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93
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Weng Q, Jin W. Determination of free intracellular amino acids in single mouse peritoneal macrophages after naphthalene-2,3-dicarboxaldehyde derivatization by capillary zone electrophoresis with electrochemical detection. Electrophoresis 2001; 22:2797-803. [PMID: 11545411 DOI: 10.1002/1522-2683(200108)22:13<2797::aid-elps2797>3.0.co;2-n] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A method is described for the direct identification and quantification of amino acids in individual mouse peritoneal macrophages by capillary zone electrophoresis with electrochemical detection after on-column derivatization with naphthalene-2,3-dicarboxaldehyde (NDA) and CN-. In this method, individual macrophages and then the lysing/ derivatizing buffer are injected into the front end of the separation capillary by electromigration with the aid of an inverted microscope. The front end of the separation capillary is used as a chamber to lyse the macrophage and derivatize its contents, which minimizes dilution of amino acids of a single macrophage during derivatization. Six amino acids (serine, alanine, taurine, glycine, glutamic acid, and aspartic acid) in single mouse peritoneal macrophages have been identified. Quantitation has been accomplished through the use of calibration curves, where the concentration ratios of these standard amino acids are similar to the concentration ratios of amino acids in macrophages. Cellular levels of the amino acids in these cells range from 0.27 +/- 0.20 fmol/ cell for alanine to 6.4 +/- 4.6 fmol/cell for taurine.
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Affiliation(s)
- Q Weng
- Laboratory of Analytical Science, School of Chemistry, Shandong University, Jinan, China
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94
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Wu S, Xiang K, Zheng T, Sun D, Weng Q, Zhao H, Li J. Relationship between the renin-angiotensin system genes and diabetic nephropathy in the Chinese. Chin Med J (Engl) 2000; 113:437-41. [PMID: 11776100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
OBJECTIVE To clarify whether genetic variants of the renin-angiotensin system (RAS) contribute to the development of diabetic nephropathy (DN) in the Chinese. METHODS Totally 173 Chinese subjects of Han nationality from Shanghai were classified into! control, DN (-) and DN (+) groups. The latter was subdivided according to diabetic duration at the onset of DN and the stage of DN. Genotyping of five polymorphic sites in four key genes of the RAS: the AGT-T174M, AGT-M235T and AGTR1 genotypes were determined by PCR/restriction enzyme digestion. The insertion/deletion (I/D) and [ACAC] n-STR microsatellite polymorphic markers were used for ACE and REN genotyping, respectively. Statistical analysis showed comparisons of gene frequencies between any two groups were made with Fisher's exact test or Chi-square test. Logistic regression analysis was performed to identify predictors of DN. RESULTS The frequencies of ACE-DD genotype and ACE-D allele were much higher in DN(+) group than in DN (-) group (0.25 vs 0.05, 0.47 vs 0.29, respectively), so were the frequencies of TT genotype and T allele in AGT-M235T (0.73 vs 0.54, 0.85 vs 0.68, respectively). DN (+) DUR < 5 years group had greatly increased frequencies of AGT-M235T allele and ACE-DD genotype in comparison with DN(-) group (0.92 vs 0.68 and 0.28 vs 0.05, respectively). Logistic regression analysis further identified these two genes as contributing factors to DN. Although AGTR1 and AGT-T174M genotyping analysis revealed differences in frequency distribution between DN (+) and DN (-) or control groups, logistic regression analysis failed to implicate them in the development of DN. CONCLUSIONS Our study revealed RAS genes, ACE and AGT-M235T but not AGT-T174M, AGTR1 or REN genotypes, as contributing factors for DN in type 2 diabetes mellitus in Chinese.
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Affiliation(s)
- S Wu
- Department of Endocrinology and Metabolism, Diabetes Research Laboratory and Medical Genetics Research Laboratory, Shanghai Sixth People's Hospital, Shanghai Second Medical University, Shanghai 200233, China
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95
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Weng Q, Ni X, Gopala A, Xu J, Heiden P. Use of low molecular weight oligomers as non-volatile reaction media. POLYMER 1998. [DOI: 10.1016/s0032-3861(98)00147-5] [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: 11/30/2022]
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96
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Wu S, Xiang K, Weng Q, Lin X, Li Q, Dai Y, Zhao H, Shen W, Pu L, Li J. Relationship between angiotensin I converting enzyme gene polymorphism and diabetic nephropathy. Chin Med J (Engl) 1998; 111:478-9. [PMID: 10374364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Affiliation(s)
- S Wu
- Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital, China
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97
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Xiang K, Wang Y, Wu S, Lu H, Zheng T, Sun D, Weng Q, Jia W, Shen W, Pu L, He J. Mitochondrial tRNA(Leu(UUR)) gene mutation diabetes mellitus in Chinese. Chin Med J (Engl) 1997; 110:372-8. [PMID: 9594306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE To ascertain the prevalence and clinical features of mitochondrial tRNALeu(UUR) gene nucleotide (nt) 3243 A-->G mutation diabetes mellitus in Chinese and to establish the approaches for genetic diagnosis of this subtype of diabetes during routine daily clinical practice. METHODS Mitochondrial nt 3243 A-->G mutation was screened among 207 unrelated non-insulin-dependent diabetes mellitus (NIDDM) patients by using polymerase chain reaction (PCR)/Apa I restriction endonuclease digestion. Samples with positive result were confirmed by DNA sequence analysis. Genetic and clinical analysis were carried out in family members of the proband with positive genetic diagnosis. RESULTS Positive results were found in two subjects during screening of unrelated NIDDM patients, which account for 2.4%-11.1% of NIDDM subjects with uncommon clinical features (with early age-of-onset, with low body-mass-index and on insulin therapy) or with positive family history of diabetes consistent with or unable to exclude from maternal inheritance. Genetic diagnosis was positive in 10 out of 25 family members in the pedigrees of these two probands. CONCLUSIONS Mitochondrial tRNALeu(UUR) gene nt 3242 A-->G mutation should be considered in diabetic patients with the above-mentioned clinical features. The genetic diagnosis in daily clinical practice can be performed with allele specific priming amplification, or PCR/Hae III or Apa I digestion which are technically simple to perform and diagnostically easy to define.
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Affiliation(s)
- K Xiang
- Department of Endocrinology and Metabolism, Shanghai Sixth People Hospital, China
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98
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Wu S, Xiang K, Weng Q. [Relationship between angiotensin 1 converting enzyme gene polymorphism and diabetic nephropathy]. Zhonghua Yi Xue Za Zhi 1997; 77:183-6. [PMID: 9596955] [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: 02/07/2023]
Abstract
OBJECTIVE To clarify if ACE gene I/D polymorphism attributes to the development of non-insulin dependent diabetes mellitus (NIDDM) and renal complication. METHODS A fragment of 287 bp Alu sequence in inron 16 of ACE gene was used as I/D polymorphic marker. After PCR amplification of DNA fragment, 12% non-denatured polyacrylamide gel electrophoresis was undertaken to analyze the PCR products. RESULTS Allele D was the prominent one (frequency 0.75) in the subgroup of DN which was complicated in the earliest stage of NIDDM without HTN, CHD and diabetic retinopathy. However, the frequency of allele D was low (0.39) in the subgroup of NIDDM without DN, HTN, CHD and diabetic retinopathy, in which the duration of each subject was over 5 years. It was significant to compare these two mentioned subgroups (P < 0.02, continuity-adjusted X2test, P < 0.05). The distribution of genotype in the whole NIDDM group without HTN and CHD (69 cases) was very similar to the normal control (110 subjects) (I 0.60 to 0.59, D 0.40 to 0.41). CONCLUSION The I/D polymorphism of ACE gene may be the factor of genetic predisposition of early-onset diabetic nephropathy in Chinese NIDDM.
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Affiliation(s)
- S Wu
- Department of Endocrinology and Metabolism, Shanghai, Sixth People's Hospital
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