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Huang Q, You R, Tan M, Cai D, Zou H, Zhang S, Huang H. HIF-1α is an important regulator of IL-8 expression in human bone marrow stromal cells under hypoxic microenvironment. Protoplasma 2024; 261:543-551. [PMID: 38135806 DOI: 10.1007/s00709-023-01920-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023]
Abstract
The secretion of IL-8 has been found increasing for different reasons in human bone marrow stromal cells (BMSCs), resulting in poor prognosis in patients with hematologic neoplasms. Hypoxia, a typical feature of numerous hematologic neoplasms microenvironment, often produces hypoxia inducible factor-1α (HIF-1α) which stabilizes and promotes tumor progression. Besides, hypoxic conditions also induce IL-8 production in BMSCs. However, very little is known about the mechanism of increased IL-8 expression in BMSCs caused by hypoxia. In the present study, HIF-1α and IL-8 were found highly expressed in BMSC lines under hypoxic conditions. In addition, the expression and secretion of IL-8 were significantly inhibited by the knockdown of HIF-1α under hypoxic conditions. Furthermore, HIF-1α was found to transcriptionally regulate IL-8 by binding to the region of IL-8 promoter at - 147 to - 140. Collectively, these results demonstrate that IL-8's increase is partly due to the hypoxic microenvironment in hematologic neoplasms, and activation of HIF-1α in BMSCs contributes to the induction and transcriptional regulation of IL-8 expression.
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Affiliation(s)
- Qiqi Huang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Maoqing Tan
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Danni Cai
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Hong Zou
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Shuxia Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory On Hematology, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China.
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2
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You R, Mu Y, Zhou J, Wang C, Fang Z, Liu Y, Liu S, Zhai Q, Zhang C. Ferroptosis is involved in trophoblast cells cytotoxicity induced by black phosphorus nanoparticles. Toxicology 2024; 505:153810. [PMID: 38653377 DOI: 10.1016/j.tox.2024.153810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/08/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Black phosphorus (BP) is a new type of nanomaterial, which has been widely used in many biomedical fields due to its superior properties, but there are few studies on the toxicity of BP, especially in the reproductive system. To explore the effects of BP exposure on reproduction and reveal its molecular mechanism, we firstly investigated the potential toxicity of black phosphorus nanoparticles (BPNPs) in vivo. The results showed that BP exposure in pregnant mice can reduce the weight of fetal mice and placenta. H&E staining further indicated the changes of placental cross-section and vascular remodeling after BP treatment. Then, human exvillous trophoblast HTR8/SVneo was treated with different concentrations of BPNPs. We found that BPNPs induced significant cytotoxicity, including dose-dependent reduction of cell viability and proliferation. Trophoblast cell migration and invasion were also impaired by BPNPs exposure. Moreover, pretreatment with Cytochalasin D (Cyto-D), a classical phagocytic inhibitor, alleviated the decline of cell viability induced by BPNPs. Transcriptome sequencing showed that BPNPs exposure led to ferroptosis. Subsequently, the related indexes of ferroptosis were detected, including increase of iron ion concentration, decrease of the ferroptosis marker, GPX4 (Glutathione Peroxidase 4), increase of FTL (Ferritin Light Chain), and increase of lipid peroxidation indexes (MDA level and decrease of GSH level). In addition, ferroptosis inhibitors (Fer-1 and DFO) pretreatment can alleviate both the cytotoxic effects and functional impairment induced by BPNPs. In summary, our study confirmed the reproductive toxicity of BPNPs for the first time, and constructed BPNPs injury model in vitro using human villus trophoblast cells and revealed the role of ferroptosis in this process, which deepened our understanding of the biosafety of black phosphorus nanomaterials.
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Affiliation(s)
- Ruolan You
- School of Public Health, Shandong Second Medical University, Weifang 261053, China
| | - Yaming Mu
- School of Public Health, Shandong Second Medical University, Weifang 261053, China
| | - Jiaqi Zhou
- School of Public Health, Shandong Second Medical University, Weifang 261053, China
| | - Chunying Wang
- Key Laboratory of Maternal & Fetal Medicine of National Health Commission of China,Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250014, China
| | - Zhenya Fang
- Key Laboratory of Maternal & Fetal Medicine of National Health Commission of China,Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250014, China
| | - Yu Liu
- Key Laboratory of Maternal & Fetal Medicine of National Health Commission of China,Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250014, China
| | - Shiyu Liu
- International Center, Jinan Foreign Language School, Jinan 250108, China
| | - Qingfeng Zhai
- School of Public Health, Shandong Second Medical University, Weifang 261053, China.
| | - Changqing Zhang
- Key Laboratory of Maternal & Fetal Medicine of National Health Commission of China,Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250014, China.
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3
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You R, Liu YP, Chen XZ, Chen JH, Chan JYW, Fang JG, Hu CS, Han YQ, Han F, Hu GY, Jiang Y, Jiang WH, Kong L, Li JG, Lin Q, Liu Y, Liu YH, Lu YT, Ng WT, Man PK, Sun JW, Tao L, Yi JL, Zhu XD, Wen WP, Chen MY, Han DM. Surgical treatment of nasopharyngeal cancer - a consensus recommendation from two Chinese associations. Rhinology 2024; 62:23-34. [PMID: 37902657 DOI: 10.4193/rhin23.054] [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: 10/31/2023]
Abstract
BACKGROUND Surgical treatment is playing an increasingly important role in the management of nasopharyngeal carcinoma (NPC). This consensus focuses on the indications for optimal surgery, and surgical methods in the whole process of treatment for NPC to provide a useful reference to assist these difficult clinical decisions. METHODOLOGY A thorough review of available literature on NPC and surgery was conducted by the Association for the prevention and treatment of nasopharyngeal carcinoma in China, international exchange and promotion Association for medicine and healthcare, and the Committee on nasopharyngeal cancer of Guangdong provincial anticancer association. A set of questions and a preliminary draft guideline was circulated to a panel of 1096 experienced specialists on this disease for voting on controversial areas and comments. A refined second proposal, based on a summary of the initial voting and different opinions expressed, was recirculated to the experts in two authoritative medical science and technology academic groups in the prevention and treatment of NPC in China for review and reconsideration. RESULTS The initial round of questions showed variations in clinical practice even among similar specialists, reflecting the lack of high-quality supporting data and resulting difficulties in formulating clinical decisions. Through exchange of comments and iterative revisions, recommendations with high-to-moderate agreement were formulated on general treatment strategies and details of surgery, including indications and surgical approaches. CONCLUSION By standardizing the surgical indications and practice, we hope not only to improve the surgical outcomes, but also to highlight the key directions of future clinical research in the surgical management of NPC.
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Affiliation(s)
- R You
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - Y P Liu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - X Z Chen
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Zhejiang Province Key Laboratory of Radiation Oncology, Hangzhou, P. R. China
| | - J H Chen
- Department of Neurosurgery, Third Affiliated Hospital of Southern Medical University, Guangzhou, P. R. China
| | - J Y W Chan
- Department of Surgery, LKS Faculty of Medicine, The University of Hong, Hong Kong, P. R. China
| | - J G Fang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, P. R. China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, P. R. China
| | - C S Hu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, P. R. China
| | - Y Q Han
- Department of Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, P. R. China
| | - F Han
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, P. R. China
| | - G Y Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Y Jiang
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, P. R. China
| | - W H Jiang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - L Kong
- Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai, P. R. China
| | - J G Li
- Department of Radiation Oncology, Jiangxi Cancer Hospital of Nanchang University, Nanchang, Jiangxi, P. R. China
| | - Q Lin
- Department of Radiation Oncology, The First Affiliated Hospital of Xiamen University, Xiamen, P. R. China
| | - Y Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Y H Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Y T Lu
- Department of Otorhinolaryngology, Shenzhen Second People's Hospital/The First Affiliated Hospital of Shenzhen University, Shenzhen, P. R. China
| | - W T Ng
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, P. R. China
| | - P K Man
- Department of Otorhinolaryngology, Centro Hospitalar C.S. Januario Macau, Macau, P. R. China
| | - J W Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital, University of Science and Technology of China, Hefei, P. R. China
| | - L Tao
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, P. R. China
| | - J L Yi
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, P. R. China
| | - X D Zhu
- Department of Radiation Oncology, The Affiliated Tumor Hospital of Guangxi Medical University, Guangxi, P.R. China
| | - W P Wen
- Department of Otolaryngology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - M Y Chen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - D M Han
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, P. R. China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, P. R. China
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Zhang B, Deng X, You R, Liu J, Hou D, Wang X, Chen S, Li D, Fu Q, Zhang J, Huang H, Chen X. Secreted insulin-like growth factor binding protein 5 functions as a tumor suppressor and chemosensitizer through inhibiting insulin-like growth factor 1 receptor/protein kinase B pathway in acute myeloid leukemia. Neoplasia 2024; 47:100952. [PMID: 38159363 PMCID: PMC10829870 DOI: 10.1016/j.neo.2023.100952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/03/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND In addition to being secreted into the intercellular spaces by exocytosis, insulin-like growth factor binding protein 5 (IGFBP5) may also remain in the cytosol or be transported to the nucleus. Depending on the different cellular context and subcellular distribution, IGFBP5 can act as a tumor suppressor or promoter through insulin-like growth factor -dependent or -independent mechanisms. Yet, little is known about the impacts of IGFBP5 on acute myeloid leukemia (AML) and its underlying mechanism. METHODS Here we investigated the roles of IGFBP5 in human AML by using recombinant human IGFBP5 (rhIGFBP5) protein and U937 and THP1 cell lines which stably and ectopically expressed IGFBP5 or mutant IGFBP5 (mtIGFBP5) with the lack of secretory signal peptide. Cell counting kit-8 and flow cytometry assay were conducted to assess the cell viability, cell apoptosis and cell cycle distribution. Cytotoxicity assay was used to detect the chemosensitivity. Leukemia xenograft model and hematoxylin-eosin staining were performed to evaluate AML progression and extramedullary infiltration in vivo. RESULTS In silico analysis demonstrated a positive association between IGFBP5 expression and overall survival of the AML patients. Both IGFBP5 overexpression and extrinsic rhIGFBP5 suppressed the growth of THP1 and U937 cells by inducing cell apoptosis and arresting G1/S transition and promoted the chemosensitivity of U937 and THP1 cells to daunorubicin and cytarabine. However, overexpression of mtIGFBP5 failed to demonstrate these properties. An in vivo xenograft mouse model of U937 cells also indicated that overexpression of IGFBP5 rather than mtIGFBP5 alleviated AML progression and extramedullary infiltration. Mechanistically, these biological consequences depended on the inactivation of insulin-like growth factor 1 receptor -mediated phosphatidylinositol-3-kinase/protein kinase B pathway. CONCLUSIONS Our findings revealed secreted rather than intracellular IGFBP5 as a tumor-suppressor and chemosensitizer in AML. Upregulation of serum IGFBP5 by overexpression or addition of extrinsic rhIGFBP5 may serve as a suitable therapeutic approach for AML.
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Affiliation(s)
- Beiying Zhang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China; Department of Laboratory Medicine, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Xiaoling Deng
- Jiangxi Health Commission Key Laboratory of Leukemia, the Affiliated Ganzhou Hospital of Nanchang University, No 16 Meiguan Road, Ganzhou, Jiangxi 341000, China; Ganzhou Key Laboratory of Molecular Medicine, the Affiliated Ganzhou Hospital of Nanchang University, Ganzhou, Jiangxi 341000, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China
| | - Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China
| | - Shucheng Chen
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China
| | - Dongliang Li
- Department of Hepatobiliary Disease, the 900th Hospital of the People's Liberation Army Joint Service Support Force, Fuzhou, Fujian 350025, China
| | - Qiang Fu
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, China
| | - Jingdong Zhang
- Jiangxi Health Commission Key Laboratory of Leukemia, the Affiliated Ganzhou Hospital of Nanchang University, No 16 Meiguan Road, Ganzhou, Jiangxi 341000, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, Fujian 350001, China.
| | - Xiaoli Chen
- Jiangxi Health Commission Key Laboratory of Leukemia, the Affiliated Ganzhou Hospital of Nanchang University, No 16 Meiguan Road, Ganzhou, Jiangxi 341000, China; Ganzhou Key Laboratory of Molecular Medicine, the Affiliated Ganzhou Hospital of Nanchang University, Ganzhou, Jiangxi 341000, China.
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5
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Li Y, He X, Sun B, Hu N, Li J, You R, Tao F, Fang L, Li Y, Zhai Q. Combined exposure of beta-cypermethrin and emamectin benzoate interferes with the HPO axis through oxidative stress, causing an imbalance of hormone homeostasis in female rats. Reprod Toxicol 2024; 123:108502. [PMID: 37984602 DOI: 10.1016/j.reprotox.2023.108502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/06/2023] [Accepted: 11/15/2023] [Indexed: 11/22/2023]
Abstract
The impact of pesticides on reproductive health has been increasingly recognized. β-cypermethrin (β-CYP) and emamectin benzoate (EMB) are commonly used with agricultural workers. There are few published studies on the effects of combined poisoning of these two pesticides on the reproductive system. This study investigated the toxic effects and mechanism of β-CYP and EMB on the reproductive system of female rats based on the hypothalamic-pituitary-ovarian (HPO) axis. The hypothalamic GnRH content tended to decrease, and Kiss-1 and GPR-54 mRNA and protein expression tended to increase in exposed rats. FSH content was elevated for the pituitary gland, and Kiss-1 and GPR-54 mRNA and protein expression were enhanced in all experimental groups compared with the control group. E2 content in rat ovaries and ERα mRNA and protein expression were reduced by β-CYP and EMB. Furthermore, there were interactive effects of β-CYP and EMB on FSH and E2 release, pituitary GPR-54 mRNA and protein, and ovarian ERα mRNA expression. To investigate causes of damage, oxidative damage indicators were tested and showed that exposure to β-CYP and EMB decreased GSH-Px and SOD activities in the HPO axis, increased MDA levels in the hypothalamus and ovary together with LDH activities in the HPO axis, with an interaction effect on GSH-Px and SOD activities in the hypothalamus and pituitary gland as well as on MDA in the ovary. The above results support the screening of sensitive molecular biomarkers and evaluation of the adverse effects of pesticide exposure in greenhouse operations on reproductive health.
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Affiliation(s)
- Yuxin Li
- School of Public Health, Weifang Medical University, Weifang 261053, China; Peking University Health Science Center-Weifang Joint Research Center for Maternal and Child Health, Beijing 100191, China
| | - Xianzhi He
- School of Public Health, Changsha Medical University, Changsha 410219, China
| | - Bin Sun
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Nannan Hu
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Jiamin Li
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Ruolan You
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Feiyan Tao
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Lei Fang
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - Yuanyuan Li
- Department of Neonatology, Weifang Maternal and Child Health Hospital, Weifang 261011, China.
| | - Qingfeng Zhai
- School of Public Health, Weifang Medical University, Weifang 261053, China.
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Liao X, Cai D, Liu J, Hu H, You R, Pan Z, Chen S, Xu K, Dai W, Zhang S, Lin X, Huang H. Deletion of Mettl3 in mesenchymal stem cells promotes acute myeloid leukemia resistance to chemotherapy. Cell Death Dis 2023; 14:796. [PMID: 38052820 PMCID: PMC10698052 DOI: 10.1038/s41419-023-06325-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 11/10/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023]
Abstract
Acute myeloid leukemia (AML) cell survival and chemoresistance are influenced by the existence of bone marrow mesenchymal stem cells (BMMSCs); however, the pathways by which BMMSCs contribute to these processes remain unclear. We earlier revealed that methyltransferase-like 3 (METTL3) expression is significantly reduced in AML BMMSCs and that METTL3 mediates BMMSC adipogenesis to promote chemoresistance in human AML cell lines in vitro. In this investigation, we evaluated the METTL3 function in vivo. Mice exhibiting a conditional removal of Mettl3 in BMMSCs were developed by mating Prrx1-CreERT2;Mettl3fl/+ mice with Mettl3fl/fl mice using the CRISPR-Cas9 system. The Mettl3 deletion increased bone marrow adiposity, enhanced disease progression in the transplantation-induced MLL-AF9 AML mouse model, and chemoresistance to cytarabine. The removal of Mettl3 in BMMSCs resulted in a significant increase in BMMSC adipogenesis. This effect was attributed to the downregulation of AKT1 expression, an AKT serine/threonine kinase 1, in an m6A-dependent manner. The development of chemoresistance in AML is linked to the promoted adipogenesis of BMMSCs. We conclude that METTL3 expression in BMMSCs has a critical function in limiting AML progression and chemoresistance, providing a basis for the progression of therapeutic approaches for AML.
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Affiliation(s)
- Xinai Liao
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Danni Cai
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Haoran Hu
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Zhipeng Pan
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Shucheng Chen
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Kaiming Xu
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Wei Dai
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Shuxia Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China
| | - Xinjian Lin
- Key Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, 350122, Fuzhou, Fujian, China.
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, 350001, Fuzhou, Fujian, China.
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7
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Hou D, Zheng X, Cai D, You R, Liu J, Wang X, Liao X, Tan M, Lin L, Wang J, Zhang S, Huang H. Interleukin-6 Facilitates Acute Myeloid Leukemia Chemoresistance via Mitofusin 1-Mediated Mitochondrial Fusion. Mol Cancer Res 2023; 21:1366-1378. [PMID: 37698549 DOI: 10.1158/1541-7786.mcr-23-0382] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/28/2023] [Accepted: 09/07/2023] [Indexed: 09/13/2023]
Abstract
Acute myeloid leukemia (AML), an aggressive hematopoietic malignancy, exhibits poor prognosis and a high recurrence rate largely because of primary and secondary drug resistance. Elevated serum IL6 levels have been observed in patients with AML and are associated with chemoresistance. Chemoresistant AML cells are highly dependent on oxidative phosphorylation (OXPHOS), and mitochondrial network remodeling is essential for mitochondrial function. However, IL6-mediated regulation of mitochondrial remodeling and its effectiveness as a therapeutic target remain unclear. We aimed to determine the mechanisms through which IL6 facilitates the development of chemoresistance in AML cells. IL6 upregulated mitofusin 1 (MFN1)-mediated mitochondrial fusion, promoted OXPHOS, and induced chemoresistance in AML cells. MFN1 knockdown impaired the effects of IL6 on mitochondrial function and chemoresistance in AML cells. In an MLL::AF9 fusion gene-induced AML mouse model, IL6 reduced chemosensitivity to cytarabine (Ara-C), a commonly used antileukemia drug, accompanied by increased MFN1 expression, mitochondrial fusion, and OXPHOS status. In contrast, anti-IL6 antibodies downregulated MFN1 expression, suppressed mitochondrial fusion and OXPHOS, enhanced the curative effects of Ara-C, and prolonged overall survival. In conclusion, IL6 upregulated MFN1-mediated mitochondrial fusion in AML, which facilitated mitochondrial respiration, in turn, inducing chemoresistance. Thus, targeting IL6 may have therapeutic implications in overcoming IL6-mediated chemoresistance in AML. IMPLICATIONS IL6 treatment induces MFN1-mediated mitochondrial fusion, promotes OXPHOS, and confers chemoresistance in AML cells. Targeting IL6 regulation in mitochondria is a promising therapeutic strategy to enhance the chemosensitivity of AML.
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Affiliation(s)
- Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoming Zheng
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Danni Cai
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xinai Liao
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Maoqing Tan
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Liyan Lin
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jin Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Shuxia Zhang
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
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8
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Liao X, Chen L, Liu J, Hu H, Hou D, You R, Wang X, Huang H. m 6A RNA methylation regulators predict prognosis and indicate characteristics of tumour microenvironment infiltration in acute myeloid leukaemia. Epigenetics 2023; 18:2160134. [PMID: 36567510 PMCID: PMC9980463 DOI: 10.1080/15592294.2022.2160134] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Patients with acute myeloid leukaemia (AML) have poor prognoses and low overall survival (OS) rates owing to its heterogeneity and the complexity of its tumour microenvironment (TME). N6-methyladenosine (m6A) modification plays a key role in the initiation and progression of haematopoietic malignancies. However, the underlying function of m6A regulators in AML remains elusive. This study thoroughly analysed the m6A modification features of 177 AML patients based on 22 m6A regulators. Utilizing unsupervised clustering, we determined three distinct m6A modification patterns related to different biological functions, TME cell-infiltrating characteristics and clinical outcomes. Additionally, a risk score was constructed based on six m6A regulators-associated prognostic signatures and was validated as an independent and valuable prognostic factor for AML. Patients with a low-risk score exhibited better survival than those with a high-risk score. Many m6A regulators were aberrantly expressed in AML, among which METTL14, YTHDC2, ZC3H13 and RBM15 were observed to be associated with the OS of AML. In addition, these four m6A regulators were found to be noticeably related to the immune checkpoint inhibitor (ICI) treatments. Finally, we verified the expression levels of these four m6A regulators in AML and healthy samples and three groups of AML patients with different risk categories. Collectively, our study indicates that the m6A modification pattern is involved in TME immune-infiltrating characteristics and prognosis in AML. A better understanding of the m6A modification pattern will help enhance our knowledge of the molecular mechanisms of AML and develop potential prognosis prediction indicators and more effective immunotherapeutic strategies.
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Affiliation(s)
- Xinai Liao
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ling Chen
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Haoran Hu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
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Wang X, Huang J, You R, Hou D, Liu J, Wu L, Yao M, Yang F, Huang H. Downregulation of ITGA5 inhibits lymphangiogenesis and cell migration and invasion in male laryngeal squamous cell carcinoma. Protoplasma 2023; 260:1569-1580. [PMID: 37338646 DOI: 10.1007/s00709-023-01873-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/09/2023] [Indexed: 06/21/2023]
Abstract
ITGA5, a fibronectin receptor was highly expressed in laryngeal squamous cell carcinoma (LSCC) samples and was related to poor survival. However, the potential mechanism remains unclear. To elucidate the regulatory role of ITGA5 in LSCC progression, we investigated the effect of ITGA5 expression on lymphangiogenesis, migration, and invasion of LSCC cells in vitro and in vivo using immunohistochemistry, siRNA transfection, qRT-PCR, western blotting, enzyme-linked immunosorbent assay, flow cytometry, transwell co-culture, tube formation, cell migration, and invasion assays, and a subcutaneous graft tumor model. The expression of ITGA5 was higher in the LSCC tissues and linked to lymph node metastasis and T staging. Moreover, ITGA5 expression was significantly positively correlated with VEGF-C expression, and the lymphatic vessel density of patients with high ITGA5 expression was noticeably higher than that of patients with low ITGA5 expression. Additionally, it was found in vitro that downregulation of ITGA5 expression not only inhibited the expression and secretion of VEGF-C, but also suppressed the tube-forming ability of human lymphatic endothelial cells (HLECs) and the migration and invasion ability of LSCC cells, while exogenous VEGF-C supplementation reversed these phenomena. Furthermore, a tumor xenograft assay showed that si-ITGA5 restrained the growth and metastasis of TU212-derived tumors in vivo. Our findings suggested that ITGA5 induces lymphangiogenesis and LSCC cell migration and invasion by enhancing VEGF-C expression and secretion.
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Affiliation(s)
- Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Jun Huang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
- Department of Clinical Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
| | - Long Wu
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Meihong Yao
- Department of Pathology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Fuwen Yang
- Department of Otorhinolaryngology, Head and Neck Surgery, The 900th Hospital of the People's Liberation Army Joint Service Support Force, 156 North Xi-er Huan Road, Fuzhou, 350025, Fujian, China.
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China.
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10
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Tan M, Liu B, You R, Huang Q, Lin L, Cai D, Yang R, Li D, Huang H. Red Blood Cell Distribution Width as a Potential Valuable Survival Predictor in Hepatitis B Virus-related Hepatocellular Carcinoma. Int J Med Sci 2023; 20:976-984. [PMID: 37324183 PMCID: PMC10266047 DOI: 10.7150/ijms.79619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/13/2023] [Indexed: 06/17/2023] Open
Abstract
Objectives: Red blood cell distribution width (RDW) is a widely used clinical parameter recently deployed in predicting various cancers. This study aimed to evaluate the prognostic value of RDW in patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC). Methods: We conducted a retrospective study of 745 patients with HBV-related HCC, 253 patients with chronic hepatitis B (CHB), and 256 healthy individuals to compare their hematological parameters and analyze their RDW levels. Potential risk factors for long-term all-cause mortality in patients with HBV-related HCC were predicted using Multivariate Cox regression. A nomogram was generated, and its performance was evaluated. Results: The RDW of patients with HBV-related HCC was significantly higher than that of those with CHB and healthy controls. In the former, splenomegaly, liver cirrhosis, larger tumor diameter, multiple tumor number, portal vein tumor thrombus, and lymphatic or distant metastasis were significantly increased, and the later the Child-Pugh grade and Barcelona clinic liver cancer stage, the higher the RDW. Furthermore, multivariate Cox regression analysis identified RDW as an independent risk factor for predicting long-term all-cause mortality in patients with HBV-related HCC. Finally, we successfully generated a nomogram incorporating RDW and validated its predictive ability. Conclusions: RDW is a potentially valuable hematological marker for predicting the survival and prognosis of patients with HBV-related HCC. The nomogram incorporating RDW can be used as an effective tool to plan the individualized treatment of such patients.
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Affiliation(s)
- Maoqing Tan
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
| | - Bang Liu
- Department of Hepatobiliary Disease, Fuzong Clinical Medical College of Fujian Medical University (900TH Hospital of Joint Logistics Support Force), Fuzhou, Fujian, 350025, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
| | - Qiqi Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
| | - Liyan Lin
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
| | - Danni Cai
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
| | - Rong Yang
- Follow-up Center of Union Hospital Affiliated to Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Dongliang Li
- Department of Hepatobiliary Disease, Fuzong Clinical Medical College of Fujian Medical University (900TH Hospital of Joint Logistics Support Force), Fuzhou, Fujian, 350025, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
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Li Y, Zhong M, He X, Zhang R, Fu Y, You R, Tao F, Fang L, Li Y, Zhai Q. The combined effect of titanium dioxide nanoparticles and cypermethrin on male reproductive toxicity in rats. Environ Sci Pollut Res Int 2023; 30:22176-22187. [PMID: 36282392 DOI: 10.1007/s11356-022-23796-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/19/2022] [Indexed: 05/28/2023]
Abstract
Titanium nanoparticles and pyrethroid pesticides are now being widely used in industrial, agriculture, and biomedical applications. In recent years, their health safety profiles have aroused concerns among health scientists. This study mainly explored the combined effects of titanium dioxide nanoparticles (TiO2NPs) and cypermethrin (CYP) on reproductive toxicity in male rats by gavage for 90 days. Thirty-two male Sprague-Dawley rats were assigned to four groups: the control group, the TiO2NPs group, the CYP group, and the combined titanium dioxide nanoparticles with cypermethrin (TiO2NPs + CYP) group. The results of biochemical analysis on testicular tissue homogenate showed that TiO2NPs and CYP mixtures decreased the activities of glutathione peroxidase (GSH-Px) and catalase (CAT) while increasing the activity of malondialdehyde (MDA) and lactate dehydrogenase (LDH). Meanwhile, the results of two-way factorial analysis of variance (ANOVA) showed a significant effect on GSH-Px, CAT, LDH, testicular cell apoptosis, and sperm quality in rats after exposure. Furthermore, the combined exposure group exhibited apoptosis of testicular cells and DNA damage. The results indicated that exposure to a mixture of TiO2NPs and CYP had adverse effects on the reproductive status of male rats.
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Affiliation(s)
- Yuxin Li
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Mingqing Zhong
- Department of Public Health, Nankang Hospital of Traditional Chinese Medicine, Ganzhou, 341499, China
| | - Xianzhi He
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Ruoyu Zhang
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Yu Fu
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Ruolan You
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Feiyan Tao
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Lei Fang
- School of Public Health, Weifang Medical University, Weifang, 261053, China
| | - Yuanyuan Li
- Department of Neonatology, Weifang Maternal and Child Health Hospital, Weifang, 261011, China
| | - Qingfeng Zhai
- School of Public Health, Weifang Medical University, Weifang, 261053, China.
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12
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Wu WB, Zhang XB, Liu YP, Zou X, You R, Xie YL, Duan XT, Li HF, Wen K, Peng L, Hua YJ, Huang PY, Sun R, Chen JH, Chen MY. Stent pretreatment for internal carotid artery exposed to necrotic lesions in nasopharyngeal carcinoma. Rhinology 2023; 0:3056. [PMID: 36715464 DOI: 10.4193/rhin22.451] [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: 01/31/2023]
Abstract
BACKGROUND Post radiation nasopharyngeal necrosis (PRNN) invading the internal carotid artery (ICA) contributes to the death of 69.2-72.7% of PRNN patients. ICA occlusion is an effective treatment to avoid fatal bleeding, while some patients are intolerant. We present a novel method that allows for these patients without interrupting blood flow through the ICA. METHODOLOGY This study enrolled patients with PRNN-invaded ICA who were not suitable for ICA occlusion from April 2020 to November 2022. ICA stent pretreatment was performed in the 36 patients and followed the endoscopic nasopharyngectomy (ENPG) or conservative treatment for PRNN. We report the survival outcome and incidence of complications after stent implantation and compare the survival outcomes of ENPG and conservative treatment for PRNN followed by stent implantation. RESULTS ICA stent pretreatment was performed in the 36 enrolled patients, among which 14 underwent ENPG, and 22 received conservative treatment. 27.8% patients died after a median follow-up of 15 months. The Kaplan-Meier estimates of overall survival were higher in the ENPG group than in the conservative treatment group. Karnofsky performance status (KPS) was significantly higher in the ENPG group than in the non-ENPG group. CONCLUSIONS The innovative application of ICA stents is a promising treatment to improve outcomes in patients with PRNN invading the ICA who are unsuitable for ICA embolization, especially when followed by endoscopic surgery. However, methods to avoid postoperative cerebral ischemia and nasopharyngeal hemorrhage still require further study.
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Affiliation(s)
- W-B Wu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - X-B Zhang
- Department of Neurosurgery, The third affiliated hospital of Southern Medical University, Guangzhou, P. R. China
| | - Y-P Liu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - X Zou
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - R You
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - Y-L Xie
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - X-T Duan
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - H-F Li
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - K Wen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - L Peng
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - Y-J Hua
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - P-Y Huang
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - R Sun
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
| | - J-H Chen
- Department of Neurosurgery, The third affiliated hospital of Southern Medical University, Guangzhou, P. R. China
| | - M-Y Chen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
- Sun Yat-sen University Cancer Center
- State Key Laboratory of Oncology in South China
- Collaborative Innovation Center for Cancer Medicine
- Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P.R. China
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Ding X, Zhang W, You R, Zou X, Wang Z, Ouyang YF, Liu YL, Peng L, You-Ping L, Duan CY, Yang Q, Lin C, Yulong X, Chen SY, Gu CM, Huang P, Hua Y, Chen M. 663P Camrelizumab plus apatinib in patients with recurrent or metastatic nasopharyngeal carcinoma failing first-line therapy: An open-label, single-arm, phase II study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.787] [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: 11/01/2022] Open
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Wan Y, Zeng F, Tan H, Lu Y, Zhang Y, Zhao L, You R. Cost-effectiveness analyses of denosumab for osteoporosis: a systematic review. Osteoporos Int 2022; 33:979-1015. [PMID: 35059777 DOI: 10.1007/s00198-021-06268-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
UNLABELLED This paper systematically reviewed and assessed all retrievable pharmacoeconomic studies on denosumab for the treatment of osteoporosis. Denosumab was more cost-effective in patients with older age, prior fracture experience, lower BMD T-scores, and more risk factors. ESCEO-IOF guidelines were more applicable to improve the quality of pharmacoeconomic studies in osteoporosis. INTRODUCTION There are many pharmacoeconomic studies on denosumab for osteoporosis. However, the corresponding reviews are outdated or incomplete and need to be updated and refined. This article aims to systematically review and evaluate all retrievable pharmacoeconomic studies of denosumab for osteoporosis. METHODS A systematic literature search was performed utilizing PubMed, EMBASE(Ovid), Proquest(EconLit), Chongqing VIP, WanFang Database, and Chinese National Knowledge Infrastructure to identify full-text articles published before September 2021. The quality of full-text articles was evaluated by the Consolidated Health Economic Evaluation Reporting Standards(CHEERS) and the European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Diseases International Osteoporosis Foundation guideline(ESCEO-IOF). RESULTS In total, 21 full-text articles were eligible for inclusion. Denosumab for postmenopausal osteoporosis was not dominant compared to zoledronate and teriparatide. However, denosumab was dominant compared with strontium ranelate, raloxifene, and ibandronate in patients over 65 years. The probabilities of denosumab being cost-effective or dominant were more than 85% compared with no treatment and risedronate in patients aged over 70 years. Compared to alendronate, the highest rate of denosumab dominance occurred in patients aged 65 to 75 years, at about 65%. Most of the articles had higher CHEERS scores than ESCEO-IOF scores (converted into percentages). CONCLUSIONS The cost-effectiveness of denosumab for the treatment of osteoporosis was influenced by multiple factors. Generally, denosumab was more cost-effective in patients with older age, prior fracture experience, lower BMD T-scores, and more risk factors. ESCEO-IOF guidelines were more applicable to improve the transparency, generalization, and quality of pharmacoeconomic studies in osteoporosis.
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Affiliation(s)
- Y Wan
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China
| | - F Zeng
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China
| | - H Tan
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China
| | - Y Lu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China
| | - Y Zhang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China
| | - L Zhao
- Department of Pharmacy, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - R You
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei, China.
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15
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You R, Hou D, Wang B, Liu J, Wang X, Xiao Q, Pan Z, Li D, Feng X, Kang L, Chen P, Huang H. Bone marrow microenvironment drives AML cell OXPHOS addiction and AMPK inhibition to resist chemotherapy. J Leukoc Biol 2021; 112:299-311. [PMID: 34927743 PMCID: PMC9544716 DOI: 10.1002/jlb.6a0821-409rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/19/2021] [Accepted: 12/02/2021] [Indexed: 12/17/2022] Open
Abstract
The stromal niche plays a pivotal role in AML chemoresistance and energy metabolism reprogramming is a hallmark of a tumor. 5′‐Adenosine monophosphate‐activated protein kinase (AMPK) is an important energy sensor suppressing mammalian target of rapamycin complex 1 (mTORC1) activity. However, the role of AMPK‐mTORC1 pathway on connecting AML cell energy metabolism reprogramming and chemoresistance induced by the bone marrow microenvironment (BMM) is not defined. Here, with a co‐culture system that simulates the interaction between BMM and AML cells, it is shown that stromal contact led to a decreased sensitivity to chemotherapy accompanied by an increase of oxidative phosphorylation (OXPHOS) activity and mitochondrial ATP synthesis in AML cells. The increased OXPHOS activity and excessive ATP production promoted chemoresistance of AML cells through inhibiting AMPK activity and in turn activating mTORC1 activity. In an in vivo AML mouse model, depletion of AMPK activity with genetic targeting promoted AML progression and reduced their sensitivity to chemotherapeutic drugs. Collectively, AML cells’ acquired increased OXPHOS activity as well as AMPK inhibition could be therapeutically exploited in an effort to overcome BMM‐mediated chemoresistance.
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Affiliation(s)
- Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Bin Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Qirong Xiao
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Zhipeng Pan
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Dongliang Li
- Department of Hepatobiliary Disease, The 900th Hospital of the People's Liberation Army Joint Service Support Force, Fuzhou, Fujian, China
| | - Xiaoming Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Lixia Kang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Ping Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
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16
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Ding X, Xie YL, Xia L, Liu YP, You R, Hong MH, Chen MY. [Exploration of surgical treatment of newly untreated nasopharyngeal carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:772-776. [PMID: 34344110 DOI: 10.3760/cma.j.cn115330-20200827-00698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- X Ding
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - Y L Xie
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - L Xia
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - Y P Liu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - R You
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - M H Hong
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China Department of Clinical Research, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - M Y Chen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
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17
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Yang S, You R, Diao S, Hong M, Liu A, Peng Z. The Genetic and neuropathological features of POEMS Syndrome: A Case Report. Rev Neurol (Paris) 2021; 178:275-278. [PMID: 34294457 DOI: 10.1016/j.neurol.2021.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/28/2021] [Accepted: 03/30/2021] [Indexed: 10/20/2022]
Affiliation(s)
- S Yang
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China
| | - R You
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China
| | - S Diao
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China
| | - M Hong
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China
| | - A Liu
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China
| | - Z Peng
- Department of Neurology, First Affiliated Hospital of Guangdong Pharmaceutical College, Guangzhou, 510000, China.
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18
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Reich K, Sullivan J, Arenberger P, Jazayeri S, Mrowietz U, Augustin M, Elewski B, You R, Regnault P, Frueh JA. Secukinumab shows high and sustained efficacy in nail psoriasis: 2.5-year results from the randomized placebo-controlled TRANSFIGURE study. Br J Dermatol 2020; 184:425-436. [PMID: 32479641 DOI: 10.1111/bjd.19262] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Secukinumab, a fully human monoclonal antibody that selectively neutralizes interleukin-17A, a cornerstone cytokine in psoriasis, has shown long-lasting efficacy and safety in the complete spectrum of psoriasis manifestations. OBJECTIVES To report the long-term (2·5-year) efficacy and safety of secukinumab in nail psoriasis. METHODS TRANSFIGURE, a double-blind, randomized, placebo-controlled, parallel-group, multicentre phase IIIb study in 198 patients, investigated secukinumab 150 mg and 300 mg in patients with moderate-to-severe nail psoriasis. RESULTS At week 16, the primary endpoint Nail Psoriasis Severity Index (NAPSI) was met, demonstrating superiority of secukinumab to placebo. The effect was sustained over 2·5 years with a large benefit for nail clearance, with mean NAPSI improvement of -73·3% and -63·6% with secukinumab 300 mg and 150 mg, respectively. At 2·5 years, secukinumab demonstrated sustained clinically significant reductions in total mean Nail Assessment in Psoriasis and Psoriatic Arthritis (NAPPA) quality-of-life (QoL) scores of -52·4% and -18·1%, and 70% and 71% of patients achieved a weighted NAPPA Patient Benefit Index global score of ≥ 2 with secukinumab 300 mg and 150 mg, respectively. Patients showed considerable improvements in the EuroQol 5-Dimension health status questionnaire at 2·5 years, reporting a decrease in pain and discomfort. No new safety findings were observed. CONCLUSIONS Secukinumab demonstrated strong and clinically meaningful efficacy for up to 2·5 years in nail psoriasis, with significant sustained QoL improvements and a favourable safety profile.
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Affiliation(s)
- K Reich
- Translational Research in Inflammatory Skin Diseases, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Skinflammation® Center, Hamburg, Germany
| | - J Sullivan
- Sutherland Hospital, University of New South Wales, Sydney, NSW, Australia
| | - P Arenberger
- Department of Dermatovenereology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - S Jazayeri
- Alliance Dermatology and Mohs Center, Phoenix, AZ, USA
| | - U Mrowietz
- Psoriasis Center at the Department of Dermatology, University Medical Center Schleswig-Holstein, Kiel, Germany
| | | | - B Elewski
- Department of Dermatology, University of Alabama, Birmingham, AL, USA
| | - R You
- China Novartis Institutes for BioMedical Research, Shanghai, China
| | | | - J A Frueh
- Novartis Pharma AG, Basel, Switzerland
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19
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Hou D, Wang B, You R, Wang X, Liu J, Zhan W, Chen P, Qin T, Zhang X, Huang H. Stromal cells promote chemoresistance of acute myeloid leukemia cells via activation of the IL-6/STAT3/OXPHOS axis. Ann Transl Med 2020; 8:1346. [PMID: 33313091 PMCID: PMC7723653 DOI: 10.21037/atm-20-3191] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Bone marrow stromal cells (BMSCs) are known to promote chemoresistance in acute myeloid leukemia (AML) cells. However, the molecular basis for BMSC-associated AML chemoresistance remains largely unexplored. Methods The mitochondrial oxidative phosphorylation (OXPHOS) levels of AML cells were measured by a Seahorse XFe24 cell metabolic analyzer. The activity of total or mitochondrial signal transducer and transcription activator 3 (STAT3) in AML cells was explored by flow cytometry and Western blotting. Real-time quantitative PCR, Western blotting and enzyme-linked immunosorbent assay (ELISA) were used to analyze expression of interleukin 6 (IL-6) in the human BMSC line HS-5, and IL-6 was knocked out in HS-5 cells by CRISPR/Cas9 system. Results In this study, we observed that co-culturing with BMSCs heightened OXPHOS levels in AML cells, thus promoting chemoresistance in these cells. HS-5 cell-induced upregulation of OXPHOS is dependent on the activation of STAT3, especially on that of mitochondrial serine phosphorylated STAT3 (pS-STAT3) in AML cells. The relationship among pS-STAT3, OXPHOS, and chemosensitivity of AML cells induced by BMSCs was demonstrated by the STAT3 activator and inhibitor, which upregulated and downregulated the levels of mitochondrial pS-STAT3 and OXPHOS, respectively. Intriguingly, AML cells remodeled HS-5 cells to secrete more IL-6, which augmented mitochondrial OXPHOS in AML cells and stimulated their chemoresistance. IL-6 knockout in HS-5 cells impaired the ability of these cells to activate STAT3, to increase OXPHOS, or to promote chemoresistance in AML cells. Conclusions BMSCs promoted chemoresistance in AML cells via the activation of the IL-6/STAT3/OXPHOS pathway. These findings exhibit a novel mechanism of chemoresistance in AML cells in the bone marrow microenvironment from a metabolic perspective.
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Affiliation(s)
- Diyu Hou
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Bin Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China.,Clinical Laboratory, Fujian Children's Hospital, Fuzhou, China
| | - Ruolan You
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoting Wang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jingru Liu
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Weiwu Zhan
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ping Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Tiandi Qin
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xuehao Zhang
- School of Medical Technology and Engineering, Fujian Medical University, Fuzhou, China
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
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20
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Gottlieb A, Kubanov A, Doorn M, Sullivan J, Papp K, You R, Regnault P, Frueh J. 苏金单抗治疗掌跖银屑病的研究. Br J Dermatol 2020. [DOI: 10.1111/bjd.18916] [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: 11/28/2022]
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21
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Gottlieb A, Kubanov A, Doorn M, Sullivan J, Papp K, You R, Regnault P, Frueh J. A study of the drug secukinumab in the treatment of palmoplantar psoriasis. Br J Dermatol 2020. [DOI: 10.1111/bjd.18906] [Citation(s) in RCA: 1] [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: 12/01/2022]
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22
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Gottlieb A, Kubanov A, Doorn M, Sullivan J, Papp K, You R, Regnault P, Frueh J. Sustained efficacy of secukinumab in patients with moderate‐to‐severe palmoplantar psoriasis: 2·5‐year results from
GESTURE
, a randomized, double‐blind, placebo‐controlled trial. Br J Dermatol 2019; 182:889-899. [DOI: 10.1111/bjd.18331] [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] [Accepted: 07/04/2019] [Indexed: 01/23/2023]
Affiliation(s)
- A.B. Gottlieb
- Department of Dermatology Icahn School of Medicine at Mount Sinai New York NY U.S.A
| | - A. Kubanov
- State Scientific Center of Dermatology, Venereology and Cosmetology Moscow Russia
| | - M. Doorn
- Department of Dermatology Erasmus University Medical Center Rotterdam the Netherlands
| | - J. Sullivan
- Kingsway Dermatology & Aesthetics Miranda Australia
| | - K.A. Papp
- K. Papp Research and Probity Medical Research, Inc. Waterloo ON Canada
| | - R. You
- China Novartis Institutes for BioMedical Research Shanghai China
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23
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Chen M, You R, You-Ping L, Huang PY, Zou X, Shen GP, Zhang HD. Chemotherapy plus local-regional radiotherapy versus chemotherapy alone in primary metastatic nasopharyngeal carcinoma: A randomized, open-label, phase III trial. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Wang X, Wang B, Zhan W, Kang L, Zhang S, Chen C, Hou D, You R, Huang H. Melatonin inhibits lung metastasis of gastric cancer in vivo. Biomed Pharmacother 2019; 117:109018. [DOI: 10.1016/j.biopha.2019.109018] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 05/19/2019] [Accepted: 05/21/2019] [Indexed: 02/02/2023] Open
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25
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Chen P, Zhan W, Wang B, You P, Jin Q, Hou D, Wang X, You R, Zou H, Chen Y, Huang H. Homoharringtonine potentiates the antileukemic activity of arsenic trioxide against acute myeloid leukemia cells. Exp Cell Res 2019; 376:114-123. [PMID: 30763586 DOI: 10.1016/j.yexcr.2019.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/26/2019] [Accepted: 02/11/2019] [Indexed: 01/20/2023]
Abstract
Relapse of minimal residual disease (MRD) is a major problem after conventional chemotherapy in patients with acute myeloid leukemia (AML). The bone marrow stroma can protect AML cells from insults of chemotherapy, partly contributing to AML relapse. Arsenic trioxide (ATO) is the main component of arsenical traditional Chinese medicines and has been widely used for the treatment of hematologic malignancies particularly acute promyelocytic leukemia over the past three decades. ATO acts through a direct arsenic binding to cysteine residues in zinc fingers located in promyelocytic leukemia protein (PML), thus killing the leukemia stem cells (LSCs). Our prior study has demonstrated that adhesion to stroma cells could render AML cells resistant to ATO but the detailed mechanism remains to be explored. Here, we report that the adhesion-induced resistance to ATO is related to the up-regulation of myeloid cell leukemia-1 (Mcl-1). Homoharringtonine (HHT) can potentiate the anti-leukemia effects of ATO on adhered AML cells by suppressing Mcl-1 through glycogen synthase kinase-3β (GSK3β). Furthermore, a potentiating effect of HHT on ATO was also observed in primary AML cells and AML xenografted tumors. Thus, these data indicate that HHT could enhance ATO anti-leukemia activity both in vitro and in vivo.
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Affiliation(s)
- Ping Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Weiwu Zhan
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Bin Wang
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Peidong You
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Qing Jin
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Diyu Hou
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaoting Wang
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Ruolan You
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Hong Zou
- Clinical Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China
| | - Yuanzhong Chen
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, The Union Hospital of Fujian Medical University, Fuzhou, China.
| | - Huifang Huang
- Central Laboratory, The Union Hospital of Fujian Medical University, Fuzhou, China.
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26
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Reich K, Sullivan J, Arenberger P, Mrowietz U, Jazayeri S, Augustin M, Parneix A, Regnault P, You R, Milutinovic M. Effect of secukinumab on the clinical activity and disease burden of nail psoriasis: 32‐week results from the randomized placebo‐controlled
TRANSFIGURE
trial. Br J Dermatol 2019; 181:954-966. [DOI: 10.1111/bjd.17351] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2018] [Indexed: 12/14/2022]
Affiliation(s)
- K. Reich
- Dermatologikum Berlin Friedrichstraße 89 10117 Berlin Germany
- SCIderm Research Institute Hamburg Germany
| | - J. Sullivan
- Kingsway Dermatology & Aesthetics Miranda NSW Australia
| | - P. Arenberger
- Department of Dermatology Charles University Third Faculty of Medicine Prague Czech Republic
| | - U. Mrowietz
- Psoriasis Center at the Department of Dermatology University Medical Center Schleswig‐Holstein Campus Kiel Germany
| | - S. Jazayeri
- Alliance Dermatology and Mohs Center Phoenix AZ U.S.A
| | | | - A. Parneix
- Novartis Pharmaceuticals Corporation East Hanover NJ U.S.A
| | | | - R. You
- Beijing Novartis Pharma Co. Ltd Beijing China
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27
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Wang B, Wang X, Hou D, Huang Q, Zhan W, Chen C, Liu J, You R, Xie J, Chen P, Huang H. Exosomes derived from acute myeloid leukemia cells promote chemoresistance by enhancing glycolysis-mediated vascular remodeling. J Cell Physiol 2018; 234:10602-10614. [PMID: 30417360 DOI: 10.1002/jcp.27735] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/18/2018] [Indexed: 12/20/2022]
Abstract
Acute myeloid leukemia (AML) is the most common type of leukemia in adults. AML cells secrete angiogenic factors to remodel vasculature and acquire chemoresistance; however, antiangiogenic drugs are often ineffective in AML treatment. Cancer cell-derived exosomes can induce angiogenesis, but their role in vascular remodeling during AML is unclear. Here, we found that exosomes secreted by AML cells promoted proliferation and migration and tube-forming activity of human umbilical vein endothelial cells (HUVECs), whereas HUVECs conferred chemoresistance to AML cells. AML cell-derived exosomes contained vascular endothelial growth factor (VEGF) and VEGF receptor (VEGFR) messenger RNA and induced VEGFR expression in HUVECs. Furthermore, they enhanced glycolysis, which correlated with HUVEC proliferation, tube formation, and resistance to apoptosis. Thus, AML cells secrete VEGF/VEGFR-containing exosomes that induce glycolysis in HUVECs leading to vascular remodeling and acquisition of chemoresistance. These findings may contribute to the development of novel therapeutic strategies targeting exosomes in AML.
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Affiliation(s)
- Bin Wang
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoting Wang
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Diyu Hou
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Qian Huang
- Department of Hepatobiliary Disease, Fuzhou General Hospital, Fujian Medical University, Fuzhou, China
| | - Weiwu Zhan
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Canwei Chen
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China.,Department of Clinical Laboratory, The Hospital of Nanan City, Nanan, China
| | - Jingru Liu
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ruolan You
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jieqiong Xie
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
| | - Ping Chen
- Department of Fujian Provincial Key Laboratory on Hematology, Fujian Institute of Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Huifang Huang
- Department of Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China
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28
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You-Ping L, You R, Li H, Chen M. Surgery for isolated regional failure in nasopharyngeal carcinoma after radiation: Selective or comprehensive neck dissection. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438.001] [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: 11/12/2022] Open
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29
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You R, Chen M, Liu YP, Zhang YN, Huang PY. Relationship of circulating tumour cells to progression-free survival and tumour response in patients with metastatic nasopharyngeal carcinoma: A prospective cohort study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438] [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: 11/12/2022] Open
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30
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You R, Wang J, Han Y, Liu LJ, Wang WY. [Comparison of two kinds of artificial tears on the dry eye after phacoemulsification]. Zhonghua Yan Ke Za Zhi 2017; 53:445-450. [PMID: 28606267 DOI: 10.3760/cma.j.issn.0412-4081.2017.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the curative effect of two different artificial tears on dry eye after phacoemulsification. Methods: Prospective randomized controlled clinical trial. From March to June in 2012, 102 patients (102 eyes) with age-related cataract were treated with phacoemulsification at Beijing Tongren Hospital, Capital University of Medical Sciences, and these eyes were randomly divided into blank group (group A ) 32 cases, treatment group 1 (group B) 35 cases and treatment group 2 (group C) 35 cases. Group A was treated with conventional antibiotics. Group B was sodium hyaluronate eye drop, group C was lipid-containing carbomer gel respectively. All patients finished a dry eye questionnaire called Ocular Surface Disease Index (OSDI), and Schimmer's test (SIt), break up time (BUT) and fluorescein staining (FL) tests were performed before surgery and at 7, 30 and 90 days after surgery respectively. Optometry were performed at 90 days after surgery. The χ(2) test was used to analyze the sex of the patients, and the age of the patients was analyzed by one-way ANOVA. Partial data in eye tests and in OSDI does not meet the normal distribution. Therefore, they were analyzed by Kruskal-Wallis H test. If significant difference existed, these data were then analyzed by independent sample Wilcoxon rank sum test. Results: Twelve patients were lost to visit within 3 months. A total of 90 patients were followed up for 90 days. The mean age of all patients was (69.5±9.5) years (46.0-89.0 years), 38 males and 64 females. There were 30 patients in Group A, group B and group C respectively. The prevalence of dry eye was 56. 7% (60/102). There was no significant difference among the three groups (P>0.05). OSDI questionnaire showed that OSDI score was significantly different among the three groups at 7, 30 and 90 days after operation (H=9.89, 55.53, 45.43, P<0.05). At 30 and 90 days after operation, the median OSDI scores were 12.50 and 10.42 in group C, respectively, which were better than those of group A scores 27.09 and 20. 8 (Z=- 6.30, -5.94, P<0.05), and were better than those of group B scores 17.71 and 13. 54 (Z=-3.40, -3.52, P<0.05). At 90 days after operation, the median BUT of B and C treatment groups was 9. 00, which was better than that of group A (4.00). The difference was statistically significant (H=21.51, P<0.05), There was no significant difference between group B and group C (Z=-0.34, P>0.05). Conclusion: The treatment of artificial tears with lipid composition in the early stage after phacoemulsification is beneficial to the improvement of postoperative symptoms and signs of dry eye. (Chin J Ophthalmol, 2017, 53: 445-450).
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Affiliation(s)
- R You
- Department of Ophthalmology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
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31
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Bissonnette R, Luger T, Thaçi D, Toth D, Messina I, You R, Guana A, Fox T, Papavassilis C, Gilloteau I, Mrowietz U. Secukinumab sustains good efficacy and favourable safety in moderate-to-severe psoriasis after up to 3 years of treatment: results from a double-blind extension study. Br J Dermatol 2017; 177:1033-1042. [PMID: 28580579 DOI: 10.1111/bjd.15706] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2017] [Indexed: 01/16/2023]
Abstract
BACKGROUND Secukinumab has demonstrated significant efficacy with a good safety profile through 1 year in plaque psoriasis. Given the chronic nature of this disease, long-term follow-up is needed to evaluate psoriasis therapies fully. OBJECTIVES To determine the long-term (3-year) efficacy and safety of secukinumab in moderate-to-severe psoriasis. METHODS Patients completing 52 weeks of secukinumab treatment in the SCULPTURE core study entered an extension in which they continued the same double-blind regimens. Dosing regimens included a fixed-interval schedule (FI; every 4 weeks) and retreatment as needed (RAN), in which patients were withdrawn from secukinumab and received placebo until the start of relapse, at which time secukinumab every 4 weeks was reinitiated. The study was registered with number NCT01640951. RESULTS In total 168 patients receiving secukinumab 300 mg FI and 172 receiving secukinumab 300 mg RAN entered the extension. Secukinumab 300 mg FI sustained high efficacy: at the end of year 3, the proportion of responders achieving ≥ 90% improvement in Psoriasis Area and Severity Index (PASI 90) was 63·8%, and of PASI 100 responders it was 42·6%. The mean absolute PASI remained low (2-4) from week 52 to week 152 with 300 mg FI, with approximately two-thirds of patients reporting no impact of skin disease on their lives (Dermatology Life Quality Index of 0 or 1). Improvements in overall and subscale scores on all quality-of-life instruments were well sustained. As in the core study, FI dosing was consistently more efficacious than RAN. No new safety signals were identified to year 3. CONCLUSIONS Secukinumab 300 mg FI sustained high responses and improved quality of life with no new safety concerns through 3 years.
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Affiliation(s)
| | - T Luger
- Department of Dermatology, University of Münster, Münster, Germany
| | - D Thaçi
- Comprehensive Center for Inflammation Medicine, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - D Toth
- XLR8 Medical Research, Windsor, ON, Canada
| | - I Messina
- Novartis Pharmaceuticals, East Hanover, NJ, U.S.A
| | - R You
- Novartis Beijing Novartis Pharma Co. Ltd, Shanghai, China
| | - A Guana
- Novartis Pharmaceuticals, East Hanover, NJ, U.S.A
| | - T Fox
- Novartis Pharma AG, Basel, Switzerland
| | | | | | - U Mrowietz
- Psoriasis-Center, Department of Dermatology, University Medical Center Schleswig-Holstein, Kiel, Germany
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32
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Liu YQ, Gong Y, Qu CX, You R, Li LP, Xing LS, Wang JZ. [The preparation and evaluation of the quality control materials for detection of platelet membrane glycoproteins by flow cytometry]. Zhonghua Yi Xue Za Zhi 2017; 97:1096-1101. [PMID: 28395437 DOI: 10.3760/cma.j.issn.0376-2491.2017.14.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To prepare the quality control material for detection of platelet membrane glycoproteins by flowcytometry and evaluate the appearance traits, homogeneity and stability of it. Methods: Fresh platelets from the blood group O donors were fixed by the certain concentration of aldehyde solution and then washed by the imidazole buffer. After that, adding certain concentration of lyophilized protection solution into the preparations. The preparations were dispensed to be lyophilized and then were kept refrigerated in 2-8 ℃.According to the protocol of control of lyophilized biological products, the quality indicator for monitoring the prepared process, containing the appearance traits, the residual water, the platelet recovery and the rehydration quality were evaluated. The homogeneity and stability of these preparations were evaluated according to the CNAS-GL03 Guidance on evaluating the homogeneity and stability of samples used for proficiency testing and the ISO Guide 35 Reference material-general and statistical principles for certification. Results: The appearance traits and the rehydration quality of the quality control materials meeted the requirements, with the residual water distributed between 3.96% to 4.04% and the platelet recovery rate ranged from 68% to 72%.The homogeneity evaluation showed that there was no significant difference among the groups(P>0.05). The stability test indicated that the positive rate of platelet membrane glycoproteins CD42b, CD41 and CD62P of the quality control material was -0.14%, -0.14% and 0.74%, respectively, at 16 weeks after storage. There was no linear trend between the percentage of positive platelets with membrane glycoproteins and time(P>0.05). Conclusions: The quality control material for detection of platelet membrane glycoproteins by flow cytometry prepared by us meets the needs of the appearance traits, the residual water, the rehydration quality, the homogeneity and the longtime stability.It is hopeful to be used as internal quality control of the assay in clinic laboratory, the external quality assessment and proficiency evaluation.
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Affiliation(s)
- Y Q Liu
- Clinical Laboratory, Peking University First Hospital, Beijing 100034, China
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33
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Liu J, Zhao L, Zhang C, Ying X, You R, Deng L, Liu D. Utilization and Safety of Hepatoprotective Drugs: A Retrospective Pharmacoepidemiology Study on Two Databases of China. Indian J Pharm Sci 2017. [DOI: 10.4172/pharmaceutical-sciences.1000259] [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: 11/09/2022] Open
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Lacour JP, Ruer-Mulard M, Khemis A, Beylot-Barry M, Célérier P, Blauvelt A, Reich K, Tsai TF, Tyring S, Kingo K, Ziv M, Pinter A, Vender R, Hugot S, You R, Milutinovic M, Blanc AS, Martin L, Thaçi D. Supériorité du sécukinumab sur l’ustékinumab dans le psoriasis en plaques modéré à sévère de l’adulte : résultats de l’étude CLEAR à 1 an. Ann Dermatol Venereol 2016. [DOI: 10.1016/j.annder.2016.09.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Reich K, Sullivan J, Arenberger P, Mrowietz U, Jazayeri S, Augustin M, Parneix A, Regnault P, You R, Milutinovic M. FRI0460 Secukinumab Shows Significant Efficacy in Nail Psoriasis: Week 32 Results from The Transfigure Study. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Joly P, Duval Modeste AB, Lacour JP, Khemis A, Paul C, Lahfa M, Ruer Mulard M, You R, Cooper S, Martin L, Pinton P. Efficacité et tolérance du sécukinumab : résultats d’une étude clinique en seringues pré-remplies dans le psoriasis en plaque modéré à sévère (FEATURE). Ann Dermatol Venereol 2014. [DOI: 10.1016/j.annder.2014.09.151] [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: 11/16/2022]
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Paul C, Lacour JP, Tedremets L, Kreutzer K, Jazayeri S, Adams S, Guindon C, You R, Papavassilis C. Efficacy, safety and usability of secukinumab administration by autoinjector/pen in psoriasis: a randomized, controlled trial (JUNCTURE). J Eur Acad Dermatol Venereol 2014; 29:1082-90. [PMID: 25243910 DOI: 10.1111/jdv.12751] [Citation(s) in RCA: 228] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 08/13/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND Secukinumab is a fully human anti-interleukin-17A monoclonal antibody. OBJECTIVE Determine the efficacy, safety and usability of secukinumab administered via autoinjector/pen. METHODS This phase III trial randomized subjects with moderate to severe plaque psoriasis to secukinumab 300 mg, 150 mg or placebo self-injection once weekly to Week 4, then every 4 weeks. Co-primary end points at Week 12 were ≥75% improvement in Psoriasis Area and Severity Index (PASI 75) and clear/almost clear skin by investigator's global assessment 2011 modified version (IGA mod 2011 0/1). Secondary end points included autoinjector usability, assessed by successful, hazard-free self-injection and subject-reported acceptability on Self-Injection Assessment Questionnaire. RESULTS Week 12 PASI 75 and IGA mod 2011 0/1 responses were superior with secukinumab 300 mg (86.7% and 73.3%, respectively) and 150 mg (71.7% and 53.3%, respectively) vs. placebo (3.3% and 0%, respectively) (P < 0.0001 for all). All subjects successfully self-administered treatment at Week 1, without critical use-related hazards. Subject acceptability of autoinjector was high throughout 12 weeks. Adverse events were higher with secukinumab (300 mg, 70.0%; 150 mg, 63.9%) vs. placebo (54.1%), with differences largely driven by mild/moderate nasopharyngitis. CONCLUSION Secukinumab delivered by autoinjector/pen is efficacious, well-tolerated and associated with high usability in moderate to severe plaque psoriasis.
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Affiliation(s)
- C Paul
- Department of Dermatology, Paul Sabatier University, Toulouse, France
| | - J-P Lacour
- Department of Dermatology, University Hospital of Nice, Nice, France
| | | | - K Kreutzer
- Städtische Kliniken Bielefeld, Bielefeld, Germany
| | - S Jazayeri
- Alliance Dermatology and MOHS Center, Phoenix, Arizona, USA
| | - S Adams
- University of Calgary, Calgary, Alberta, Canada
| | - C Guindon
- Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USA
| | - R You
- Beijing Novartis Pharma Co. Ltd, Shanghai, China
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You R, Li M, Guha S, Mulholland GW, Zachariah MR. Bionanoparticles as Candidate Reference Materials for Mobility Analysis of Nanoparticles. Anal Chem 2014; 86:6836-42. [DOI: 10.1021/ac403503q] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- R. You
- University of Maryland, College Park, Maryland 20742, United States
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - M. Li
- University of Maryland, College Park, Maryland 20742, United States
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - S. Guha
- University of Maryland, College Park, Maryland 20742, United States
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - G. W. Mulholland
- University of Maryland, College Park, Maryland 20742, United States
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - M. R. Zachariah
- University of Maryland, College Park, Maryland 20742, United States
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
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Zhu Z, He J, Jia X, Jiang J, Bai R, Yu X, Lv L, Fan R, He X, Geng J, You R, Dong Y, Qiao D, Lee KB, Smith GW, Dong C. MicroRNA-25 functions in regulation of pigmentation by targeting the transcription factor MITF in Alpaca (Lama pacos) skin melanocytes. Domest Anim Endocrinol 2010; 38:200-9. [PMID: 20036482 DOI: 10.1016/j.domaniend.2009.10.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 09/25/2009] [Accepted: 10/21/2009] [Indexed: 11/20/2022]
Abstract
Although the influence of endocrine factors is well established, the molecular and cellular mechanisms controlling coat color are not completely understood. A major mechanism for post-transcriptional regulation of gene expression is through the action of microRNAs (miRNAs), which anneal to the 3' untranslated region of mRNAs in a sequence-specific fashion and either block translation or promote transcript degradation. In this study, we investigated the expression of miRNAs in the skin of alpacas with brown vs white coat color using a microarray screen; identified potential mRNA targets for identified miRNAs among coat color genes; and subsequently determined the ability of a specific, differentially expressed miRNA (miR-25) to suppress expression of micropthalmia-associated transcription factor (MITF), a predicted miR-25 target gene that regulates genes linked to coat color. Expression of 10 different miRNA species in the skin of alpacas with brown vs white coat color was identified from microarray screens. Of the 10 alpaca skin miRNAs identified, predicted binding sites in the 3' untranslated region of RNAs encoding for known genes linked to coat color were primarily for miR-25, but sites were also identified for miR-129 and miR-377. Potential miR-25 binding sites were present in transcripts encoding for 11 coat color genes, including MITF. An inverse relationship between transcript abundance for MITF and miR-25 was observed in skin samples collected from alpacas with white vs brown coat color. Furthermore, overexpression of miR-25 in cultured melanocytes reduced MITF mRNA and protein abundance and corresponding mRNA abundance for the MITF-regulated enzymes tyrosinase and tyrosinase-related protein 1. Results support a novel functional role for miRNA-25 in the regulation of gene expression linked to coat color.
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Affiliation(s)
- Z Zhu
- College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China
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Saito S, Trovato MJ, You R, Lal BK, Fasehun F, Padberg FT, Hobson RW, Durán WN, Pappas PJ. Role of matrix metalloproteinases 1, 2, and 9 and tissue inhibitor of matrix metalloproteinase-1 in chronic venous insufficiency. J Vasc Surg 2001; 34:930-8. [PMID: 11700497 DOI: 10.1067/mva.2001.119503] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
PURPOSE Increased transforming growth factor-beta(1) (TGF-beta(1)) activity is associated with chronic venous insufficiency (CVI) disease progression and dermal skin pathology. Because TGF-beta(1) stimulates collagen synthesis and alters the levels of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs), we investigated the hypothesis that increased TGF-beta(1) activity is associated with differences in messenger RNA and protein levels of MMPs and TIMP-1 in patients with CVI. METHODS One hundred ten biopsies of the lower calf and lower thigh in 73 patients were snap frozen in liquid nitrogen and stratified into six groups according to the clinical etiologic anatomic distribution pathophysiology disease classification. One set of lower-calf and lower-thigh biopsies were analyzed for MMP-1 and TIMP-1 gene expression with quantitative reverse transcription and competitive polymerase chain reaction. A second set of biopsies was analyzed for the active and latent forms of MMP-1, MMP-2, and MMP-9 as well as for TIMP-1 by western blotting, gelatin zymography, and tissue localization by immunohistochemistry (IHC). RESULTS Compared with the control, MMP-1 messenger RNA was increased in class-4 and class-6 patients (P < or =.01), whereas TIMP-1 was increased in class-6 patients only (P < or =.05). However, there were no differences in total protein between MMP-1 and TIMP-1. Active MMP-2 protein increased in class-4 and class-5 patients compared with active MMP-1 and TIMP-1 (P < or =.01). Western blotting did not identify the active component of MMP-9. Similarly, only the latent form of MMP-9 was observed by gelatin zymography, whereas both the latent and active forms of MMP-2 were observed. IHC demonstrated MMP-1 and MMP-2 in dermal fibroblasts and in perivascular leukocytes. TIMP-1 was observed in basal-layer keratinocytes of the epidermis only. MMP-9 was not detected by IHC. CONCLUSION MMP synthesis is regulated at both the transcriptional and post-transcriptional levels in CVI. Our data suggest that post-translational modifications are key to functional regulation. Dermal fibroblasts and migrating leukocytes are probable cellular sources of MMPs. Increased active MMP-2 levels in class-4 and class-5 patients indicate tissue remodeling caused by pre-ulcer and postulcer environmental stimuli. These data suggest that alterations in MMP-2 activity, in conjunction with TGF-beta(1)-mediated events, cause an imbalance in tissue remodeling leading to a pro-ulcer-forming environment.
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Affiliation(s)
- S Saito
- Division of Vascular Surgery and Program in Vascular Biology, Department of Surgery, UMDNJ-New Jersey Medical School, Newark, New Jersey 07103-2714, USA
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He T, Rao G, You R, Ge S, Zhang D. Genetic structure and heterozygosity variation between generations of Ophiopogon xylorrhizus (Liliaceae s.l.), an endemic species in Yunnan, southwest China. Biochem Genet 2001; 39:93-8. [PMID: 11521510 DOI: 10.1023/a:1010274109307] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T He
- Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P.R. China.
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Wang Z, You R. Changes in wheat germination following gamma-ray irradiation: an in vivo electronic paramagnetic resonance spin-probe study. Environ Exp Bot 2000; 43:219-225. [PMID: 10725521 DOI: 10.1016/s0098-8472(99)00061-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Embryos excised from wheat (Triticum aestivum) grains following gamma-ray irradiation at different doses were analyzed on membrane permeability by electron paramagnetic resonance (EPR) technique with 4-oxo-2, 2, 6, 6-tetramethyl-1-piperidinyloxy (TEMPONE) as spin probe to acquire an EPR spectrum. The broadening agent ferricyanide added leads to changes in the high-field region of the EPR spectrum, which reflects differences in membrane permeability. R-value, defined as the ratio of water (W) to lipid (L) component in height in the high-field region of the EPR spectrum, symbolizes membrane permeability for a given sample. The R-values corresponding to a certain dose treatment of grains displayed a definitive distribution pattern. A unit row vector with 20 components was used to describe the R-value distribution pattern for a given treatment. The transaction angle between vectors corresponding to grains irradiated and unirradiated, θ, was used as quantitative index for membrane permeability changes following gamma-ray irradiation. gamma-Ray irradiated grains germinated at low rates, and the regression equation of germination rate as a function of the irradiation dose is: Germination Rate (%)=94.8 exp[-0.264xIrradiation Dose (kGy)] (r(2)=0.991, P<0.001). Embryos excised from grains following gamma-ray irradiation show increases in θ values with irradiation dose. The θ value is negatively linearly correlated with the germination rate. It suggests that gamma-ray irradiation leading to increases in membrane permeability is consistent with that leading to low germination rate of grains. The introduction to vector analysis method on membrane permeability changes in this study is very practical.
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Affiliation(s)
- Z Wang
- College of Life Sciences, Peking University, Beijing, PR China
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43
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Tligui M, Nouri M, You R, Haab F, Gattegno B, Thibault P. [Value of cloverleaf double J ureteral stents in the treatment of extrinsic ureteral compression]. Prog Urol 2000; 10:92-4. [PMID: 10785926] [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: 02/16/2023]
Abstract
The authors report three cases of extrinsic bilateral ureteric stenoses in which standard double J ureteric stents did not allow medium-term improvement of renal function or resolution of pyelocaliceal cavity dilatation on ultrasonography. A favourable course was observed after insertion of cloverleaf double J ureteric stents.
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Affiliation(s)
- M Tligui
- Service d'Urologie, Hôpital Tenon, Paris, France
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Pappas PJ, You R, Rameshwar P, Gorti R, DeFouw DO, Phillips CK, Padberg FT, Silva MB, Simonian GT, Hobson RW, Durán WN. Dermal tissue fibrosis in patients with chronic venous insufficiency is associated with increased transforming growth factor-beta1 gene expression and protein production. J Vasc Surg 1999; 30:1129-45. [PMID: 10587400 DOI: 10.1016/s0741-5214(99)70054-6] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE Pathologic dermal degeneration in patients with chronic venous insufficiency (CVI) is characterized by aberrant tissue remodeling that results in stasis dermatitis, tissue fibrosis, and ulcer formation. The cytochemical processes that regulate these events are unclear. Because transforming growth factor-beta(1) (TGF-beta(1)) is a known fibrogenic cytokine, we hypothesized that the increased production of TGF-beta(1) would be associated with CVI disease progression. METHODS Seventy-eight punch biopsy specimens of the lower calf (LC) and the lower thigh (LT) of 52 patients were snap frozen in liquid nitrogen and stratified into four groups according to the Society for Vascular Surgery/International Society for Cardiovascular Surgery CEAP classification (C, clinical; E, etiologic; A, anatomic distribution; and P, pathophysiology). One set of LC biopsy specimens were analyzed for TGF-beta(1) gene expression with quantitative reverse transcriptase-polymerase chain reaction: healthy skin, n = 6; class 4, n = 6; class 5, n = 5; and class 6, n = 7. A second set of biopsy specimens from the LC and LT were analyzed for the amount of bioactive TGF-beta(1) with a certified cell line 64 mink lung epithelial bioassay: healthy skin, n = 8; class 4, n = 23; class 5, n = 13; and class 6, n = 10. The location of TGF-beta(1) was determined at the light and electron microscopy level with immunocytochemistry and immunogold (IMG) labeling. Multiple comparisons were analyzed with a one-way analysis of variance and the Student-Newman-Keuls post hoc tests. The LC and LT comparisons were analyzed with a two-tailed unpaired t test. RESULTS The TGF-beta(1) gene transcripts for control subjects and patients in classes 4, 5, and 6 were 7.02 +/- 7.33, 43.33 +/- 9.0, 16.13 +/- 7.67, and 7.22 +/- 0.56 x 10(-14) mol/microg total RNA, respectively. The transcripts were significantly elevated in class 4 patients only (P </=.05). The amount of active TGF-beta(1) in picograms/gram of tissue from LC and LT biopsy specimens as compared with healthy skin biopsy specimens were as follows: healthy skin, <1. 0 pc/g; class 4: LC, 5061 +/- 1827 pc/g; LT, 317.3 +/- 277 pc/g; class 5: LC, 8327 +/- 3690 pc/g; LT, 193 +/- 164 pc/g; and class 6: LC, 5392 +/- 1800 pc/g; LT, 117 +/- 61 pc/g. Differences between healthy skin and the skin of the patients in classes 4 and 6 were significant (P </=.05 and P </=.01, respectively). Differences between the LC and LT biopsy specimens within each CVI group were also significant: class 4, P </=.003; class 5, P </=.008; and class 6, P </=.02. Immunocytochemistry results of healthy skin showed TGF-beta(1) staining of epidermal basal cells only. CVI dermal biopsy results demonstrated positive staining in epidermal basal cells, fibroblasts, and leukocytes. Many leukocytes had positive staining of intracellular granules, which appeared morphologically similar to mast cells. IMG labeling results demonstrated gold particles in the leukocytes and collagen fibrils of the extracellular matrix. CONCLUSION Our study indicated that activated leukocytes traverse perivascular cuffs and release active TGF-beta(1). Positive TGF-beta(1) staining results of dermal fibroblasts were observed and suggest that fibroblasts are the targets of activated interstitial leukocytes. Increased protein production, despite normal levels of gene transcripts in patients in classes 5 and 6, suggests that alternate mechanisms other than gene transcription regulate protein production. A potential mechanism for quick access and release is storage of TGF-beta(1) in the extracellular matrix. IMG labeling to collagen fibrils support this possibility. Furthermore, TGF-beta(1) was exclusively elevated in areas of clinically active disease, indicating a regionalized response to injury. These data suggest that alterations in tissue remodeling occur in patients with CVI and that dermal tissue fibrosis in CVI is regulated by TGF-beta(1).
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Affiliation(s)
- P J Pappas
- Division of Vascular Surgery and Program in Vascular Biology, UMDNJ-New Jersey Medical School, Newark 07103-2714, USA
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Colón-Carmona A, You R, Haimovitch-Gal T, Doerner P. Technical advance: spatio-temporal analysis of mitotic activity with a labile cyclin-GUS fusion protein. Plant J 1999; 20:503-8. [PMID: 10607302 DOI: 10.1046/j.1365-313x.1999.00620.x] [Citation(s) in RCA: 485] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Plant growth responds rapidly to developmental and environmental signals, but the underlying changes in cell division activity are poorly understood. A labile cyclin-GUS reporter was developed to facilitate the spatio-temporal analysis of cell division patterns. The chimeric reporter protein is turned over every cell cycle and hence its histochemical activity accurately reports individual mitotic cells. Using Arabidopsis plants transformed with cyclin-GUS, we visualized patterns of mitotic activity in wounded leaves which suggest a role for cell division in structural reinforcement.
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Affiliation(s)
- A Colón-Carmona
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
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Abstract
Root development is plastic, with post-embryonic organogenesis being mediated by meristems. Although cell division is intrinsic to meristem initiation, maintenance and proliferative growth, the role of the cell cycle in regulating growth and development is unclear. To address this question, we examined the expression of cdc2 and cye genes, which encode the catalytic and regulatory subunits, respectively, of cyclin-dependent protein kinases that control progression through the cell cycle. Unlike cdc2, which is expressed not only in apical meristems but also before lateral root initiation in quiescent, pericycle cells arrested in the G2 phase of the cell cycle, cyc1At transcripts accumulate specifically in dividing cells immediately before cytokinesis. Ectopic expression of cyc1At under the control of the cdc2aAt promoter in Arabidopsis plants markedly accelerates growth without altering the pattern of lateral root development or inducing neoplasia. Thus cyclin expression is a limiting factor for growth, which in turn drives indeterminate development of the root system.
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Affiliation(s)
- P Doerner
- Plant Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California 92037, USA
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Abstract
BACKGROUND AND PURPOSE Lacunar infarction is an important stroke subgroup with unique clinical and pathologic features, but its relative risks for associated risk factors have been rarely documented. To address this matter, we studied 203 consecutive patients with first-ever stroke due to lacunar infarction admitted to four general hospitals during the period 1985 to 1992. METHODS We obtained information concerning risk factor exposure status among the patients by interview using a structured questionnaire and by comparison with age- and sex-matched neighborhood controls. Odds ratios were estimated with adjustment for confounding variables by using multivariate logistic regression. RESULTS Significantly increasing the risk of lacunar stroke were hypertension (with an odds ratio of 8.9 [95% confidence intervals 4.2, 18.8]), current smoking (6.6 [2.9, 14.8]), and diabetes (2.3 [1.0, 5.5]), whereas frequent physical exercise was associated with a significantly decreased risk (0.3 [0.1, 0.7]). There was no risk of lacunar stroke associated with heart disease (odds ratio 1.0 [0.5, 1.9]). CONCLUSIONS Patients with hypertension or diabetes, and those who currently smoke, are at a higher risk of lacunar stroke, whereas those who undertake regular physical exercise may be at lower risk. The high risk associated with hypertension but absent risk with heart disease supports the "lacunar hypothesis" of a unique pathophysiologic mechanism for lacunar stroke.
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Affiliation(s)
- R You
- Department of Neurology, Austin Hospital, University of Melbourne, Heidelberg, VIC, Australia
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Abstract
From 1987, nine types of free vascularized flaps or combined flaps from the foot were used to treat 26 cases of hand injury with tissue loss. They were: (1) combined flap of 4 toe dorsums, big toe pulp, first toe web, and dorsalis pedis flap with long extensor tendons of the toes, (2) composite skin flap with the second metatarsophalangeal joint, (3) wrap-around flap from the great toe, (4) first toe web flap, (5) toe pulp flap with only an artery and a nerve, (6) wrap-around flap of the great toe with a dorsalis pedis flap, (7) second toe with dorsalis pedis flap, (8) dorsalis pedis flap, and (9) first toe web flap with second metatarsal bone. All flaps survived. All the patients have used their reconstructed hand. Of the final motor functions of the reconstructed hands, 68.8% are excellent, 27.3% are good, 3.9% are fair. Of the final cosmetic results of the reconstructed hands, 76.9% are excellent, 15.3% are good, 7.8% are acceptable. Of the patients, 64.9% are satisfied with the final results of the donor sites, 31.2% feel it is acceptable, and 3.9% feel it is unsatisfactory. The selection, indication, merits and demerits of vascularized foot flaps and attentive points in the operations are discussed in this paper.
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Affiliation(s)
- X Li
- Department of Microsurgery, Shenzhen People's Hospital, People's Republic of China
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Abstract
Combined transplantation of 1) a residual proximal phalanx flap of the thumb with a fascial pedicle, 2) a reversed island flap based on the posterior interosseous artery, and 3) a free second toe was successfully used to reconstruct the radial half of the hand in a patient who had experienced loss of the second metacarpal bone and index finger, a defect to the shaft of the third metacarpal bone, and dry gangrene of the thumb, two-thirds of the radial dorsal skin and the first web space of the left hand. The reconstructive result was satisfactory and took advantage of each tissue flap. The operation was relatively simple and was completed in one stage. We believe the procedure provided good recovery of function and appearance at an appropriate cost.
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Affiliation(s)
- X Li
- Department of Microsurgery, Shenzhen People's Hospital, People's Republic of China
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Adachi A, Iwata S, Nisimura Y, Oku H, Nagamatsu Y, Sugiyama M, You R, Kakegawa T, Fukurono K, Ohtake H. [The role of surgery in the management of small cell lung carcinoma]. Rinsho Kyobu Geka 1990; 10:39-43. [PMID: 9423060] [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: 02/05/2023]
Abstract
Small cell lung carcinoma is responsive to chemotherapy and radiotherapy, but long-term survival of patients is rarely seen. We analyzed resected 19 patients with small cell lung carcinoma. The overall 5-year survival rate of resected patients was approximately 30% and mean survival time (MST) was 50 months. 2 patients of them survived more than 5 years. The survivors were received chemotherapy and radiotherapy several times after surgery. When we consider the role of resection in the treatment of small cell lung carcinoma, we can realize multimodality therapy including resection is important to obtain long-term survival. Moreover, the surgical resection can identify mixed type with non-small cell elements or residual tumors after chemotherapy and determine optimal treatment methods from their histopathologic findings.
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Affiliation(s)
- A Adachi
- Department of First Surgery, Kurume University School of Medicine, Japan
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