72751
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Liu J, Zhang S, Liu M, Wang Q, Shen H, Zhang Y. Maternal pre-pregnancy infection with hepatitis B virus and the risk of preterm birth: a population-based cohort study. LANCET GLOBAL HEALTH 2018; 5:e624-e632. [PMID: 28495266 DOI: 10.1016/s2214-109x(17)30142-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND Preterm birth is the leading cause of child death in children younger than 5 years. Large cohort studies in developed countries have shown that maternal hepatitis B virus infection is associated with preterm birth, but there is little reliable evidence from China and other developing countries, where hepatitis B virus prevalence is intermediate or high. Hence, we designed this study to investigate the association between pre-pregnancy hepatitis B virus infection and risk of preterm and early preterm birth. METHODS Between Jan 1, 2010, and Dec 31, 2012, we did a population-based cohort study using data from 489 965 rural women aged 21-49 years who had singleton livebirths from 220 counties of China who participated in the National Free Preconception Health Examination Project. Participants were divided into three groups according to their pre-pregnancy status of hepatitis B virus infection: women uninfected with hepatitis B virus (control group), women who were HBsAg positive and HBeAg negative (exposure group 1), and women who were both HBsAg and HBeAg positive (exposure group 2). The primary outcome was preterm birth (gestation at less than 37 weeks). We used log-binomial regression to estimate adjusted risk ratios (aRR) of preterm birth for women with pre-pregnancy hepatitis B virus infection, and risk of early preterm birth (gestation less than 34 weeks). FINDINGS 489 965 women met inclusion criteria and were included in this study; of these, 20 827 (4·3%) were infected with hepatitis B virus. Compared with women who were not infected with hepatitis B virus, women who were HBsAg positive and HBeAg negative had a 26% higher risk of preterm birth (aRR 1·26, 95% CI 1·18-1·34) and women who were both HBsAg and HBeAg positive had a 20% higher risk of preterm birth (aRR 1·20, 1·08-1·32). Compared with women who were not infected with hepatitis B virus, women who were HBsAg positive and HBeAg negative manifested an 18% higher risk of early preterm birth (gestation less than 34 weeks; aRR 1·18, 1·04-1·34) and women who were both HBsAg and HBeAg positive had a 34% higher risk of early preterm birth (aRR 1·34, 1·10-1·61). Maternal pre-pregnancy hepatitis B virus infection was independently associated with higher risk of preterm birth and early preterm birth. These associations were similar in subgroups of participants as defined by baseline characteristics. INTERPRETATION Besides mother-to-child transmission, the risk of preterm birth in women infected with hepatitis B virus should not be neglected. Comprehensive programmes that focus on early detection of hepatitis B virus infection before pregnancy and provide appropriate medical intervention for women infected with hepatitis B virus before and during pregnancy would be helpful in improving maternal and neonatal outcomes and reducing child mortality. FUNDING Chinese Association of Maternal and Child Health Studies.
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Affiliation(s)
- Jue Liu
- Department of Child, Adolescent and Women's Health, School of Public Health, Peking University, Beijing, China
| | - Shikun Zhang
- Department of Maternal and Child Health, National Health and Family Planning Commission of the People's Republic of China, Beijing, China
| | - Min Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China.
| | - Qiaomei Wang
- Department of Maternal and Child Health, National Health and Family Planning Commission of the People's Republic of China, Beijing, China
| | - Haiping Shen
- Department of Maternal and Child Health, National Health and Family Planning Commission of the People's Republic of China, Beijing, China
| | - Yiping Zhang
- Department of Maternal and Child Health, National Health and Family Planning Commission of the People's Republic of China, Beijing, China
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72752
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Taming the Notch Transcriptional Regulator for Cancer Therapy. Molecules 2018; 23:molecules23020431. [PMID: 29462871 PMCID: PMC6017063 DOI: 10.3390/molecules23020431] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 12/15/2022] Open
Abstract
Abstract Notch signaling is a highly conserved pathway in all metazoans, which is deeply involved in the regulation of cell fate and differentiation, proliferation and migration during development. Research in the last decades has shown that the various components of the Notch signaling cascade are either upregulated or activated in human cancers. Therefore, its downregulation stands as a promising and powerful strategy for cancer therapy. Here, we discuss the recent advances in the development of small molecule inhibitors, blocking antibodies and oligonucleotides that hinder Notch activity, and their outcome in clinical trials. Although Notch was initially identified as an oncogene, later studies showed that it can also act as a tumor suppressor in certain contexts. Further complexity is added by the existence of numerous Notch family members, which exert different activities and can be differentially targeted by inhibitors, potentially accounting for contradictory data on their therapeutic efficacy. Notably, recent evidence supports the rationale for combinatorial treatments including Notch inhibitors, which appear to be more effective than single agents in fighting cancer.
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72753
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PEAK1, acting as a tumor promoter in colorectal cancer, is regulated by the EGFR/KRas signaling axis and miR-181d. Cell Death Dis 2018; 9:271. [PMID: 29449544 PMCID: PMC5833579 DOI: 10.1038/s41419-018-0320-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/12/2018] [Accepted: 01/15/2018] [Indexed: 12/12/2022]
Abstract
PEAK1 is upregulated in multiple human malignancies and has been associated with tumor invasion and metastasis, but little is known about the role of PEAK1 in colorectal cancer (CRC) progression. We investigated the expression pattern, function and regulatory mechanisms of PEAK1 in CRC. Here, we found that PEAK1 is overexpressed in CRC tissues and that high PEAK1 expression predicts poor survival in colon cancer but not rectal cancer. Functionally, silencing PEAK1 inhibits cell proliferation, migration, and invasion in vitro and inhibits the growth of tumor xenografts in nude mice. Mechanistic studies revealed that PEAK1 is induced by epidermal growth factor receptor (EGFR) signaling and that PEAK1 is required for KRas-induced CRC cell growth and metastasis. Furthermore, we demonstrated that miR-181d directly targets PEAK1. Ectopic expression of miR-181d reduces the expression of PEAK1 and inhibits the growth and metastasis of CRC cells in vitro. Clinically, miR-181d is downregulated in CRC samples, and low miR-181d is correlated with poor patient survival. Our study demonstrates the importance of PEAK1 in CRC progression and suggests a potential mechanism by which increasing PEAK1 expression in CRC might be the result of EGFR/KRas signal activation and consequent miR-181d repression.
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72754
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Chen E, Wang MH, He F, Sun R, Cheng W, Zee BCY, Lau SYF, Wang X, Chong KC. An increasing trend of rural infections of human influenza A (H7N9) from 2013 to 2017: A retrospective analysis of patient exposure histories in Zhejiang province, China. PLoS One 2018; 13:e0193052. [PMID: 29447278 PMCID: PMC5814046 DOI: 10.1371/journal.pone.0193052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 02/02/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Although investigations have shown that closing live poultry markets (LPMs) is highly effective in controlling human influenza A (H7N9) infections, many of the urban LPMs were shut down, but rural LPMs remained open. This study aimed to compare the proportional changes between urban and rural infections in the Zhejiang province from 2013 to 2017 by analyzing the exposure histories of human cases. METHODS All laboratory-confirmed cases of H7N9 from 2013 (the first wave) to 2017 (the fifth wave) in the Zhejiang province of China were analyzed. Urban and rural infections were defined based on the locations of poultry exposure (direct and indirect) in urban areas (central towns) and rural areas (towns and villages on the outskirts of cities). A Chi-square trend test was used to compare the proportional trend between urban and rural infections over time and logistic regression was used to obtain the odds ratio by years. RESULTS From 2013 to 2017, a statistically significant trend in rural infections was observed (p <0.01). The incremental odds ratio by years of rural infections was 1.59 with 95% confidence intervals of 1.34 to 1.86. Each year, significant increases in the proportion of live poultry transactions in LPMS and poultry processing plants were detected in conjunction with an increased proportion of urban and rural infections. CONCLUSION The empirical evidence indicated a need for heightened infection control measures in rural areas, such as serving rural farms and backyards as active surveillance points for the H7N9 virus. Other potential interventions such as the vaccination of poultry and extending the closure of LPMs to the provincial level require further careful investigations.
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Affiliation(s)
- Enfu Chen
- Zhejiang Provincial Center for Disease Control and Prevention, Binjiang District, Hangzhou, Zhejiang, China
| | - Maggie H. Wang
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- Clinical Trials and Biostatistics Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Fan He
- Zhejiang Provincial Center for Disease Control and Prevention, Binjiang District, Hangzhou, Zhejiang, China
| | - Riyang Sun
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Wei Cheng
- Zhejiang Provincial Center for Disease Control and Prevention, Binjiang District, Hangzhou, Zhejiang, China
| | - Benny C. Y. Zee
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- Clinical Trials and Biostatistics Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
| | - Steven Y. F. Lau
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Xiaoxiao Wang
- Zhejiang Provincial Center for Disease Control and Prevention, Binjiang District, Hangzhou, Zhejiang, China
- * E-mail: (KCC); (XW)
| | - Ka Chun Chong
- School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
- Clinical Trials and Biostatistics Laboratory, Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- * E-mail: (KCC); (XW)
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72755
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Voytyuk I, De Strooper B, Chávez-Gutiérrez L. Modulation of γ- and β-Secretases as Early Prevention Against Alzheimer's Disease. Biol Psychiatry 2018; 83:320-327. [PMID: 28918941 DOI: 10.1016/j.biopsych.2017.08.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 01/18/2023]
Abstract
The genetic evidence implicating amyloid-β in the initial stage of Alzheimer's disease is unequivocal. However, the long biochemical and cellular prodromal phases of the disease suggest that dementia is the result of a series of molecular and cellular cascades whose nature and connections remain unknown. Therefore, it is unlikely that treatments directed at amyloid-β will have major clinical effects in the later stages of the disease. We discuss the two major candidate therapeutic targets to lower amyloid-β in a preventive mode, i.e., γ- and β-secretase; the rationale behind these two targets; and the current state of the field.
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Affiliation(s)
- Iryna Voytyuk
- KU Leuven Department for Neurosciences, Leuven, Belgium; VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Bart De Strooper
- KU Leuven Department for Neurosciences, Leuven, Belgium; VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium; UK Dementia Research Institute, University College, London, United Kingdom.
| | - Lucía Chávez-Gutiérrez
- KU Leuven Department for Neurosciences, Leuven, Belgium; VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium
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72756
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Vaideeswar P, Marathe S, Singaravel S, Anderson RH. Discontinuity of the arch beyond the origin of the left subclavian artery in an adult: Interruption or coarctation? Ann Pediatr Cardiol 2018; 11:92-96. [PMID: 29440839 PMCID: PMC5803986 DOI: 10.4103/apc.apc_91_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Congenital aortic anomalies are uncommon causes of secondary hypertension and are seldom suspected in the adult age group. We present a case of aortic interruption unexpectedly diagnosed on autopsy in a 38-year-old male who presented with cardiovascular collapse. Apart from interruption, a finding unique to our case was aneurysmal dilation of the proximal descending aorta just before the obstruction with thrombosis. We also attempt to review the literature for interrupted aortic arch in adults and clarify the nomenclature of interruption versus coarctation.
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Affiliation(s)
- Pradeep Vaideeswar
- Department of Pathology, Division of Cardiovascular and Thoracic Surgery, Seth Gordhandas Sunderdas Medical College and King Edward Memorial Hospital, Mumbai, Maharashtra, India
| | - Supreet Marathe
- Dr. PK Sen Department of Cardiovascular and Thoracic Surgery, Seth Gordhandas Sunderdas Medical College and King Edward Memorial Hospital, Mumbai, Maharashtra, India
| | - Saranya Singaravel
- Department of Pathology, Division of Cardiovascular and Thoracic Surgery, Seth Gordhandas Sunderdas Medical College and King Edward Memorial Hospital, Mumbai, Maharashtra, India
| | - Robert H Anderson
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
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72757
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Sun Y, Huang YH, Huang FY, Mei WL, Liu Q, Wang CC, Lin YY, Huang C, Li YN, Dai HF, Tan GH. 3'-epi-12β-hydroxyfroside, a new cardenolide, induces cytoprotective autophagy via blocking the Hsp90/Akt/mTOR axis in lung cancer cells. Am J Cancer Res 2018; 8:2044-2060. [PMID: 29556372 PMCID: PMC5858516 DOI: 10.7150/thno.23304] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/19/2018] [Indexed: 02/05/2023] Open
Abstract
Rationale: Cardenolides have potential as anticancer drugs. 3′-epi-12β-hydroxyfroside (HyFS) is a new cardenolide structure isolated by our research group, but its molecular mechanisms remain poorly understood. This study investigates the relationship between its antitumor activities and autophagy in lung cancer cells. Methods: Cell growth and proliferation were detected by MTT, lactate dehydrogenase (LDH) release, 5-ethynyl-20-deoxyuridine (EDU) and colony formation assays. Cell apoptosis was detected by flow cytometry. Autophagic and signal proteins were detected by Western blotting. Markers of autophagy and autophagy flux were also detected by immunofluorescence, transmission electron microscopy and acridine orange staining. Real time RT-PCR was used to analyze the gene expression of Hsp90. Hsp90 ubiquitination was detected by coimmunoprecipitation. The antitumore activities of HyFS were observed in nude mice. Results: HyFS treatment inhibited cell proliferation and induced autophagy in A549 and H460 lung cancer cells, but stronger inhibition of cell proliferation and induction of cell apoptosis were shown when HyFS-mediated autophagy was blocked. The Hsp90/Akt/mTOR axis was found to be involved in the activation of HyFS-mediated autophagy. Evidence of direct interaction between Hsp90 and Akt was observed. HyFS treatment resulted in decreased levels of heat shock protein 90 (Hsp90) and phosphorylated Akt, overexpression of Hsp90 increased activation of autophagy, and inhibition of Hsp90 expression decreased autophagy. In addition, ubiquitin-mediated degradation of Hsp90 and subsequent dephosphorylation of its client protein Akt were also found in HyFS-treated lung cancer cells. Moreover, combination treatment with HyFS and chloroquine showed remarkably increased tumor inhibition in both A549- and H460-bearing mice. Conclusion: Our results demonstrate that HyFS induced cytoprotective autophagy through ubiquitin-mediated degradation of Hsp90, which further blocked the Akt/mTOR pathway in lung cancer cells. Thus, a combination of a HyFS-like cardenolide and an autophagic inhibitor is a potential alternative approach for the treatment of lung cancer.
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72758
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Masuike Y, Tanaka K, Makino T, Yamasaki M, Miyazaki Y, Takahashi T, Kurokawa Y, Nakajima K, Mori M, Doki Y. Esophageal squamous cell carcinoma with low mitochondrial copy number has mesenchymal and stem-like characteristics, and contributes to poor prognosis. PLoS One 2018; 13:e0193159. [PMID: 29447301 PMCID: PMC5814088 DOI: 10.1371/journal.pone.0193159] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 02/05/2018] [Indexed: 12/16/2022] Open
Abstract
Alterations in mitochondrial DNA (mtDNA) copy numbers in various human cancers have been studied, but any such changes in esophageal squamous cell carcinoma (ESCC) are not established. In the present study, we investigated the correlation of mtDNA copy number with clinicopathologic features, prognosis, and malignant potential of ESCC. MtDNA copy numbers of resected specimens from 80 patients treated with radical esophagectomy were measured by quantitative real-time PCR analyses. Human ESCC cells, TE8 and TE11, were cultured, and depletion of mtDNA content was induced by knockdown of mitochondrial transcription factor A expression or treatment with ethidium bromide. The mRNA and protein expression, proliferation, invasion, and cell cycle were investigated. The results showed that the mtDNA copy number of cancerous portions was 56.0 (37.4-234.5) percent that of non-cancerous parts and significantly lower (p<0.01). Low mtDNA copy number in resected cancerous tissues was significantly correlated with pathological depth of tumor invasion (p = 0.045) and pathological stage (p = 0.025). Patients with lower mtDNA copy number had significantly poorer 5-year overall survival compared to patients with higher levels (p<0.01). The mtDNA-depleted TE8 and TE11 cells had morphological changes and proliferated more slowly than control cells under normoxia but proliferated at almost the same rate under hypoxic conditions. In mtDNA-depleted cells, E-cadherin mRNA expression was decreased, and N-cadherin, vimentin, zeb-1, and cd44 mRNA expression was increased. Immunoblotting and flow cytometry analysis also showed downregulated E-cadherin and upregulated N-cadherin and CD44 protein in mtDNA-depleted cells. Moreover, mtDNA-depleted cells had enhanced invasion, migration, and sphere formation abilities, and the cell cycle arrest at G0/G1 phase was induced in these cells. These results suggested that mtDNA-depleted ESCC cells had mesenchymal characteristics, cancer stemness, and tolerance to hypoxia, which played important role in cancer progression. In conclusion, a low copy number of mtDNA is associated with tumor progression in ESCC.
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Affiliation(s)
- Yasunori Masuike
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Koji Tanaka
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Tomoki Makino
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Makoto Yamasaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yasuhiro Miyazaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Tsuyoshi Takahashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yukinori Kurokawa
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kiyokazu Nakajima
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Masaki Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
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72759
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Mii S, Guntani A, Kawakubo E, Tanaka K, Kyuragi R. Cilostazol Improves Wound Healing in Patients Undergoing Open Bypass for Ischemic Tissue Loss: A Propensity Score Matching Analysis. Ann Vasc Surg 2018; 49:30-38. [PMID: 29455014 DOI: 10.1016/j.avsg.2017.11.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 11/11/2017] [Accepted: 11/14/2017] [Indexed: 11/26/2022]
Abstract
BACKGROUND Few reports have described the effects of medication on the wound healing of ischemic ulcers after revascularization. This study was conducted to investigate the effects of cilostazol on wound healing in patients who underwent infrainguinal bypass for ischemic tissue loss. METHODS Two hundred sixty-three limbs undergoing de novo infrainguinal bypass for tissue loss from January 2004 to December 2015 were divided into 2 groups based on whether or not cilostazol was administered after surgery. The end point was wound healing. The 1-year outcomes of the groups were analyzed using the Kaplan-Meier method, and a propensity score matching analysis was performed to examine the effects of cilostazol on wound healing. In addition, the significant predictors were determined using a Cox proportional hazards regression analysis. RESULTS Sixty-one and 202 limbs were included in the cilostazol and non-cilostazol group, respectively. The cilostazol group showed superior wound healing to the non-cilostazol group (cilostazol versus non-cilostazol, 1-year wound healing rate: 92% vs. 81%; median wound healing time: 45 vs. 78 days, P = 0.002). The results of the cilostazol group remained superior after a propensity score matching (cilostazol versus non-cilostazol, 1-year wound healing rate: 95% vs. 83%; median wound healing time: 45.5 vs. 57 days, P = 0.048). A Cox proportional hazards regression analysis indicated that foot infection, Rutherford classification, diabetes mellitus, coronary artery disease, angiosome, the administration of cilostazol, and graft patency were significant factors that influenced wound healing. CONCLUSIONS The postoperative use of cilostazol help to promote wound healing after open surgery.
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Affiliation(s)
- Shinsuke Mii
- Department of Vascular Surgery, Saiseikai Yahata General Hospital, Kitakyushu City, Japan.
| | - Atsushi Guntani
- Department of Vascular Surgery, Saiseikai Yahata General Hospital, Kitakyushu City, Japan
| | - Eisuke Kawakubo
- Department of Vascular Surgery, Saiseikai Yahata General Hospital, Kitakyushu City, Japan
| | - Kiyoshi Tanaka
- Department of Vascular Surgery, Kokura Memorial Hospital, Kitakyushu City, Japan
| | - Ryoichi Kyuragi
- Department of Vascular Surgery, Kyushu Medical Center, Fukuoka, Japan
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72760
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Beckmann N, Giorgetti E, Neuhaus A, Zurbruegg S, Accart N, Smith P, Perdoux J, Perrot L, Nash M, Desrayaud S, Wipfli P, Frieauff W, Shimshek DR. Brain region-specific enhancement of remyelination and prevention of demyelination by the CSF1R kinase inhibitor BLZ945. Acta Neuropathol Commun 2018; 6:9. [PMID: 29448957 PMCID: PMC5815182 DOI: 10.1186/s40478-018-0510-8] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 11/10/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease affecting the central nervous system (CNS). While multiple effective immunomodulatory therapies for MS exist today, they lack the scope of promoting CNS repair, in particular remyelination. Microglia play a pivotal role in regulating myelination processes, and the colony-stimulating factor 1 (CSF-1) pathway is a key regulator for microglia differentiation and survival. Here, we investigated the effects of the CSF-1 receptor kinase inhibitor, BLZ945, on central myelination processes in the 5-week murine cuprizone model by non-invasive and longitudinal magnetic resonance imaging (MRI) and histology. Therapeutic 2-week BLZ945 treatment caused a brain region-specific enhancement of remyelination in the striatum/cortex, which was absent in the corpus callosum/external capsule. This beneficial effect correlated positively with microglia reduction, increased oligodendrocytes and astrogliosis. Prophylactic BLZ945 treatment prevented excessive demyelination in the corpus callosum by reducing microglia and increasing oligondendrocytes. In the external capsule oligodendrocytes were depleted but not microglia and a buildup of myelin debris and axonal damage was observed. A similar microglial dysfunction in the external capsule with an increase of myelin debris was obvious in triggering receptor expressed on myeloid cells 2 (TREM2) knock-out mice treated with cuprizone. Finally, therapeutic BLZ945 treatment did not change the disease course in experimental autoimmune encephalomyelitis mice, a peripherally driven neuroinflammation model. Taken together, our data suggest that a short-term therapeutic inhibition of the CSF-1 receptor pathway by BLZ945 in the murine cuprizone model enhances central remyelination by modulating neuroinflammation. Thus, microglia-modulating therapies could be considered clinically for promoting myelination in combination with standard-of-care treatments in MS patients.
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Affiliation(s)
- Nicolau Beckmann
- Musculoskeletal Diseases Area, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Elisa Giorgetti
- Musculoskeletal Diseases Area, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Anna Neuhaus
- Neuroscience, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Stefan Zurbruegg
- Neuroscience, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Nathalie Accart
- Musculoskeletal Diseases Area, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Paul Smith
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
- Present address: Incyte, 1801 Augustine Cut-off, Wilmington, DE, 19803, USA
| | - Julien Perdoux
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Ludovic Perrot
- Global Scientific Operations, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Mark Nash
- Musculoskeletal Diseases Area, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Sandrine Desrayaud
- PK Sciences, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Peter Wipfli
- PK Sciences, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Wilfried Frieauff
- Preclinical Safety, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland
| | - Derya R Shimshek
- Neuroscience, Novartis Institutes for BioMedical Research, 4002, Basel, Switzerland.
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72761
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Han YD, Wang XB, Cui NH, Zhang S, Wang C, Zheng F. Associations of P16INK4a promoter hypermethylation with squamous intra-epithelial lesion, cervical cancer and their clinicopathological features: a meta-analysis. Oncotarget 2018; 8:1871-1883. [PMID: 27669738 PMCID: PMC5352104 DOI: 10.18632/oncotarget.12202] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 09/16/2016] [Indexed: 12/25/2022] Open
Abstract
To assess the associations of P16INK4a methylation status with low-grade squamous intra-epithelial lesion (LSIL), high-grade squamous intra-epithelial lesion (HSIL), cervical cancer (CC) and their clinicopathological features, a meta-analysis with 29 eligible studies was conducted. Pooled odds ratios (ORs) with their 95% confidence intervals (CIs) were estimated to assess the strength of the associations. Heterogeneity, sensitivity of pooled results and publication bias were also evaluated. Overall, there was an increasing trend of P16INK4a hypermethylation rates among LSIL (21.4%), HSIL (30.9%) and CC (35.0%) specimens. P16INK4a hypermethylation was significantly associated with the increased risk of LSIL, HSIL and CC, with the pooled ORs of 3.26 (95% CI: 1.86-5.71), 5.80 (95% CI: 3.80-8.84) and 12.17 (95% CI: 5.86-25.27), respectively. A significant association was also found between P16INK4a hypermethylation and smoking habit (OR = 3.88, 95% CI: 2.13-7.08). Taken together, meta-analysis results support P16INK4a hypermethylation as an epigenetic marker for the progression of cervical carcinogenesis.
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Affiliation(s)
- Ya-di Han
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Xue-Bin Wang
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ning-Hua Cui
- Department of Clinical Laboratory, Children's Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - Shuai Zhang
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Chen Wang
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Fang Zheng
- Center for Gene Diagnosis, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
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72762
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Hahladakis JN, Velis CA, Weber R, Iacovidou E, Purnell P. An overview of chemical additives present in plastics: Migration, release, fate and environmental impact during their use, disposal and recycling. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:179-199. [PMID: 29035713 DOI: 10.1016/j.jhazmat.2017.10.014] [Citation(s) in RCA: 1379] [Impact Index Per Article: 229.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 10/02/2017] [Accepted: 10/07/2017] [Indexed: 05/18/2023]
Abstract
Over the last 60 years plastics production has increased manifold, owing to their inexpensive, multipurpose, durable and lightweight nature. These characteristics have raised the demand for plastic materials that will continue to grow over the coming years. However, with increased plastic materials production, comes increased plastic material wastage creating a number of challenges, as well as opportunities to the waste management industry. The present overview highlights the waste management and pollution challenges, emphasising on the various chemical substances (known as "additives") contained in all plastic products for enhancing polymer properties and prolonging their life. Despite how useful these additives are in the functionality of polymer products, their potential to contaminate soil, air, water and food is widely documented in literature and described herein. These additives can potentially migrate and undesirably lead to human exposure via e.g. food contact materials, such as packaging. They can, also, be released from plastics during the various recycling and recovery processes and from the products produced from recyclates. Thus, sound recycling has to be performed in such a way as to ensure that emission of substances of high concern and contamination of recycled products is avoided, ensuring environmental and human health protection, at all times.
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Affiliation(s)
- John N Hahladakis
- School of Civil Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, Leeds, United Kingdom.
| | - Costas A Velis
- School of Civil Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, Leeds, United Kingdom.
| | - Roland Weber
- POPs Environmental Consulting, Lindenfirststr. 23, D.73527, Schwäbisch Gmünd, Germany
| | - Eleni Iacovidou
- School of Civil Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, Leeds, United Kingdom
| | - Phil Purnell
- School of Civil Engineering, University of Leeds, Woodhouse Lane, LS2 9JT, Leeds, United Kingdom
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72763
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Zheng Q, Lin Z, Xu J, Lu Y, Meng Q, Wang C, Yang Y, Xin X, Li X, Pu H, Gui X, Li T, Xiong W, Lu D. Long noncoding RNA MEG3 suppresses liver cancer cells growth through inhibiting β-catenin by activating PKM2 and inactivating PTEN. Cell Death Dis 2018; 9:253. [PMID: 29449541 PMCID: PMC5833746 DOI: 10.1038/s41419-018-0305-7] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 12/13/2022]
Abstract
Maternally expressed gene 3 (MEG3) encodes an lncRNA which is suggested to function as a tumor suppressor and has been showed to involve in a variety of cancers. Herein, our findings demonstrate that MEG3 inhibits the malignant progression of liver cancer cells in vitro and in vivo. Mechanistically, MEG3 promotes the expression and maturition of miR122 which targets PKM2. Therefore, MEG3 decreases the expression and nuclear location of PKM2 dependent on miR122. Furthermore, MEG3 also inhibits CyclinD1 and C-Myc via PKM2 in liver cancer cells. On the other hand, MEG3 promotes β-catenin degradation through ubiquitin-proteasome system dependent on PTEN. Strikingly, MEG3 inhibits β-catenin activity through PKM2 reduction and PTEN increase. Significantly, we also found that excessive β-catenin abrogated the effect of MEG3 in liver cancer. In conclusion, our study for the first time demonstrates that MEG3 acts as a tumor suppressor by negatively regulating the activity of the PKM2 and β-catenin signaling pathway in hepatocarcinogenesis and could provide potential therapeutic targets for the treatment of liver cancer.
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Affiliation(s)
- Qidi Zheng
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Zhuojia Lin
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Jie Xu
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Yanan Lu
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Qiuyu Meng
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Chen Wang
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Yuxin Yang
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Xiaoru Xin
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Xiaonan Li
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Hu Pu
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Xin Gui
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Tianming Li
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China
| | - Wujun Xiong
- Department of Hepatology, Shanghai East Hospital, Tongji University School of Medicine, 200120, Shanghai, China
| | - Dongdong Lu
- Research Center for Translational Medicine at Shanghai East Hospital, School of Life Science and Technology, Tongji University, 200092, Shanghai, China.
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72764
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Boda H, Nghi TN, Nishijo M, Thao PN, Tai PT, Van Luong H, Anh TH, Morikawa Y, Nishino Y, Nishijo H. Prenatal dioxin exposure estimated from dioxins in breast milk and sex hormone levels in umbilical cord blood in Vietnamese newborn infants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 615:1312-1318. [PMID: 29751436 DOI: 10.1016/j.scitotenv.2017.09.214] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 08/26/2017] [Accepted: 09/20/2017] [Indexed: 06/08/2023]
Abstract
Dioxin concentrations remain elevated in the environment and humans residing near the former US Air Force base in Bien Hoa city, South Vietnam. We recruited 210 mother-infant pairs for whom breast milk dioxin levels were reported in our previous study. Cord blood samples were collected from 162 mother-infant pairs. We selected 16 cord blood samples with a volume over 20mL and fat content of ≥0.03g. Toxic equivalent levels of polychlorinated dibenzodioxins and polychlorinated dibenzofurans (TEQ-PCDD/Fs) and concentrations of 17 congeners, including 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD), in cord blood were measured and compared with levels in breast milk (Study 1). Levels of 2,3,7,8-TCDD and TEQ-PCDD/Fs in cord blood samples were highly and significantly correlated with those in breast milk samples in the same pairs. This suggests dioxins in breast milk reflect prenatal dioxin exposure. Estradiol (E2) and testosterone (TS) were measured in cord blood serum from 162 samples. Associations between dioxins in breast milk and cord blood sex hormones were analyzed by infant sex, after adjusting for confounding factors (Study 2). Increased levels of TEQ-PCDD/Fs in breast milk were associated with decreased cord blood TS in girls. In boys, a significant reduction of cord blood TS was observed in those exposed to 2,3,7,8-TCDD at high levels (≥5.5pg/g lipid). There was no significant association between E2 and dioxins in breast milk in either sex. These results suggest increased prenatal dioxin exposure is associated with decreased cord TS, but in boys, only high level of 2,3,7,8-TCDD influence cord blood TS.
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Affiliation(s)
- Hitomi Boda
- Department of Maternity Nursing, and Midwifery, School of Nursing, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan; Department of Public Health, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan
| | - Tran Ngoc Nghi
- Rehabilitation, Medical Administration, Ministry of Health, Vietnam Government, Hanoi, Viet Nam
| | - Muneko Nishijo
- Department of Public Health, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan.
| | - Pham Ngoc Thao
- Department of Public Health, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan
| | - Pham The Tai
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Hanoi, Viet Nam
| | - Hoang Van Luong
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Hanoi, Viet Nam
| | - Tran Hai Anh
- Biomedical and Pharmaceutical Research Center, Vietnam Military Medical University, Hanoi, Viet Nam
| | - Yuko Morikawa
- Department of Maternity Nursing, and Midwifery, School of Nursing, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan
| | - Yoshikazu Nishino
- Department of Public Health, School of Medicine, Kanazawa Medical University, 1-1 Daigaku, Uchinada, Ishikawa 920-0293, Japan
| | - Hisao Nishijo
- System Emotional Science, Graduate School of Medicine, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
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72765
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Soliman AM, Das S, Abd Ghafar N, Teoh SL. Role of MicroRNA in Proliferation Phase of Wound Healing. Front Genet 2018; 9:38. [PMID: 29491883 PMCID: PMC5817091 DOI: 10.3389/fgene.2018.00038] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/29/2018] [Indexed: 12/15/2022] Open
Abstract
Wound healing is a complex biological process that is generally composed of four phases: hemostasis, inflammation, proliferation, and remodeling. The proliferation phase is crucial for effective healing compared to other phases. Many critical events occur during this phase, i.e., migration of fibroblasts, re-epithelialization, angiogenesis and wound contraction. Chronic wounds are common and are considered a major public health problem. Therefore, there is the increasing need to discover new therapeutic strategies. MicroRNA (miRNA) research in the field of wound healing is in its early phase, but the knowledge of the recent discoveries is essential for developing effective therapies for the treatment of chronic wounds. In this review, we focused on recently discovered miRNAs which are involved in the proliferation phase of wound healing in the past few years and their role in wound healing.
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Affiliation(s)
| | | | | | - Seong Lin Teoh
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
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72766
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Halbgebauer R, Schmidt CQ, Karsten CM, Ignatius A, Huber-Lang M. Janus face of complement-driven neutrophil activation during sepsis. Semin Immunol 2018; 37:12-20. [PMID: 29454576 DOI: 10.1016/j.smim.2018.02.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 12/28/2022]
Abstract
During local and systemic inflammation, the complement system and neutrophil granulocytes are activated not only by pathogens, but also by released endogenous danger signals. It is recognized increasingly that complement-mediated neutrophil activation plays an ambivalent role in sepsis pathophysiology. According to the current definition, the onset of organ dysfunction is a hallmark of sepsis. The preceding organ damage can be caused by excessive complement activation and neutrophil actions against the host, resulting in bystander injury of healthy tissue. However, in contrast, persistent and overwhelming inflammation also leads to a reduction in neutrophil responsiveness as well as complement components and thus may render patients at enhanced risk of spreading infection. This review provides an overview on the molecular and cellular processes that link complement with the two-faced functional alterations of neutrophils in sepsis. Finally, we describe novel tools to modulate this interplay beneficially in order to improve outcome.
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Affiliation(s)
- R Halbgebauer
- Institute of Clinical and Experimental Trauma Immunology, Ulm University Hospital, Helmholtzstr. 8/1, 89081 Ulm, Germany.
| | - C Q Schmidt
- Institute of Pharmacology of Natural Products and Clinical Pharmacology, Ulm University, Helmholtzstr. 20, 89081 Ulm, Germany.
| | - C M Karsten
- Institute for Systemic Inflammation Research, University of Luebeck, Ratzeburger Allee 160, 23562 Luebeck, Germany.
| | - A Ignatius
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstr. 14, 89081 Ulm, Germany.
| | - M Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, Ulm University Hospital, Helmholtzstr. 8/1, 89081 Ulm, Germany.
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72767
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Ucal S, Häkkinen MR, Alanne AL, Alhonen L, Vepsäläinen J, Keinänen TA, Hyvönen MT. Controlling of N-alkylpolyamine analogue metabolism by selective deuteration. Biochem J 2018; 475:663-676. [PMID: 29301981 DOI: 10.1042/bcj20170887] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 12/27/2017] [Accepted: 01/03/2018] [Indexed: 01/26/2023]
Abstract
Replacing protium with deuterium is an efficient method to modulate drug metabolism. N-alkylated polyamine analogues are polyamine antimetabolites with proven anticancer efficacy. We have characterized earlier the preferred metabolic routes of N1,N12-diethylspermine (DESpm), N1-benzyl-N12-ethylspermine (BnEtSpm) and N1,N12-dibenzylspermine (DBSpm) by human recombinant spermine oxidase (SMOX) and acetylpolyamine oxidase (APAO). Here, we studied the above analogues, their variably deuterated counterparts and their metabolites as substrates and inhibitors of APAO, SMOX, semicarbazide-sensitive amine oxidase (SSAO), diamine oxidase (DAO) and monoamine oxidases. We found that targeted deuteration efficiently redirected the preferable cleavage site and suppressed reaction rate by APAO and SMOX in vitro We found a three- to six-fold decline in Vmax with moderate variable effect on Km when deuterium was located at the preferred hydrogen abstraction site of the analogue. We also found some of the metabolites to be potent inhibitors of DAO and SSAO. Surprisingly, analogue deuteration did not markedly alter the anti-proliferative efficacy of the drugs in DU145 prostate cancer cells, while in mouse embryonic fibroblasts, which had higher basal APAO and SMOX activities, moderate effect was observed. Interestingly, the anti-proliferative efficacy of the analogues did not correlate with their ability to suppress polyamine biosynthetic enzymes, induce spermidine/spermine-N1-acetyltransferase or deplete intracellular polyamine levels, but correlated with their ability to induce SMOX. Our data show that selective deuteration of N-alkyl polyamine analogues enables metabolic switching, offering the means for selective generation of bioactive metabolites inhibiting, e.g. SSAO and DAO, thus setting a novel basis for in vivo studies of this class of analogues.
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Affiliation(s)
- Sebahat Ucal
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Merja R Häkkinen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Aino-Liisa Alanne
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Leena Alhonen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Jouko Vepsäläinen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Tuomo A Keinänen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
| | - Mervi T Hyvönen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, Yliopistonranta 1B, FI-70210 Kuopio, Finland
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72768
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Regional hyperthermia combined with radiotherapy for esophageal squamous cell carcinoma with supraclavicular lymph node metastasis. Oncotarget 2018; 8:5339-5348. [PMID: 28029663 PMCID: PMC5354912 DOI: 10.18632/oncotarget.14148] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 11/24/2016] [Indexed: 11/25/2022] Open
Abstract
To assess the efficacy and toxicity of Intensity-modulated radiotherapy (IMRT) and hyperthermia for upper and middle thoracic esophageal squamous cell carcinoma (UMT-ESCC) with supraclavicular lymph node metastasis. A total of 50 patients with UMT-ESCC with supraclavicular lymph node metastasis were evaluated in this retrospective study. All patients received IMRT. Hyperthermia was delivered simultaneously with irradiation, in 45 minutes twice a week for 5-6 weeks. Hyperthermia included supraclavicular lymph node metastasis. Forty-four patients (88.0%) received concurrent chemoradiotherapy based on cisplatin regimens. The most common types of hematological toxicities were anemia (62.0%) and leukopenia (60.0%). Most of these events were grade 1-2 and transient. The 3-year progression-free survival (PFS) rate and overall survival (OS) rate were 34.9% and 42.5%, respectively. Cox regression revealed that tumor length and number of supraclavicular lymph node metastasis were two independent predictors of OS (tumor length: HR=3.65, p=0.008; nodal stage: HR=8.07, p=0.019). The IMRT combined with supraclavicular regional hyperthermia has low toxicity and well tolerated with excellent local control in UMT-ESCC with supraclavicular lymph node metastasis.
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72769
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Li M, Zhang X, Xu X, Wu J, Hu K, Guo X, Zhang P. Clinicopathological and prognostic significance of Twist overexpression in NSCLC. Oncotarget 2018; 9:14642-14651. [PMID: 29581870 PMCID: PMC5865696 DOI: 10.18632/oncotarget.24489] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/14/2017] [Indexed: 01/18/2023] Open
Abstract
Several studies were conducted to explore the prognostic significance of Twist in non-small cell lung cancer (NSCLC), however, contradictory results in different studies were reported. To this end, we presented a systematic review aiming to summarize the prognostic significance of Twist in patients with NSCLC. 5 studies involving a total of 572 patients were identified. The result indicated that high Twist expression was significantly associated with a worse overall survival (OS) (hazard ratio (HR) = 2.19, 95% confidence interval (95% CI) = 1.64–2.94, p < 0.001; I2 = 0.0%, fixed effect), recurrence-free survival (RFS) (HR = 2.476, 95% CI = 1.728–3.547, p < 0.001; I2 = 0.0%, fixed effect) and lymph node or other metastasis (odds rate (OR) = 0.419, 95% CI = 0.259–0.679, P < 0.001, fixed effect). Subgroup analysis revealed that the expression of Twist in Chinese patients might be more closely associated with the prognosis of NSCLC than in American patients. Overall, these results indicated that Twist over-expression in patients with NSCLC might be related to poor prognosis and serves as an unfavorable predictor of poor clinicopathological prognosis factor.
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Affiliation(s)
- Meng Li
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Xing Zhang
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Xiaoqing Xu
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Jiubin Wu
- Department of Traumatology and Orthopedics, First Affiliated Hospital of Tianjin University of TCM, Tianjin, China
| | - Kaiwen Hu
- Department of Oncology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xiuwei Guo
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Peitong Zhang
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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72770
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Impaired autophagic flux is associated with the severity of trauma and the role of A 2AR in brain cells after traumatic brain injury. Cell Death Dis 2018; 9:252. [PMID: 29449536 PMCID: PMC5833790 DOI: 10.1038/s41419-018-0316-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/10/2017] [Accepted: 01/12/2018] [Indexed: 02/06/2023]
Abstract
Recent studies have shown that after traumatic brain injury (TBI), the number of autophagosomes is markedly increased in brain cells surrounding the wound; however, whether autophagy is enhanced or suppressed by TBI remains controversial. In our study, we used a controlled cortical impact system to establish models of mild, moderate and severe TBI. In the mild TBI model, the levels of autophagy-related protein 6 (Beclin1) and autophagy-related protein 12 (ATG12)-autophagy-related protein 5 (ATG5) conjugates were increased, indicating the enhanced initiation of autophagy. Furthermore, the level of the autophagic substrate sequestosome 1 (SQSTM1) was decreased in the ipsilateral cortex. This result, together with the results observed in tandem mRFP-GFP-LC3 adeno-associated virus (AAV)-infected mice, indicates that autophagosome clearance was also increased after mild TBI. Conversely, following moderate and severe TBI, there was no change in the initiation of autophagy, and autophagosome accumulation was observed. Next, we used chloroquine (CQ) to artificially impair autophagic flux in the injured cortex of the mild TBI model and found that the severity of trauma was obviously exacerbated. In addition, autophagic flux and trauma severity were significantly improved in adenosine A2A receptor (A2AR) knockout (KO) mice subjected to moderate TBI. Thus, A2AR may be involved in regulating the impairment of autophagic flux in response to brain injury. Our findings suggest that whether autophagy is increased after TBI is associated with whether autophagic flux is impaired, and the impairment of autophagic flux exacerbates the severity of trauma. Furthermore, A2AR may be a target for alleviating the impairment in autophagic flux after TBI.
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72771
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Smolińska E, Moskot M, Jakóbkiewicz-Banecka J, Węgrzyn G, Banecki B, Szczerkowska-Dobosz A, Purzycka-Bohdan D, Gabig-Cimińska M. Molecular action of isoflavone genistein in the human epithelial cell line HaCaT. PLoS One 2018; 13:e0192297. [PMID: 29444128 PMCID: PMC5812592 DOI: 10.1371/journal.pone.0192297] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 01/22/2018] [Indexed: 12/18/2022] Open
Abstract
Due to its strong proliferation-reducing effects on keratinocytes, and also anti-inflammatory properties, the isoflavone genistein has already been proposed as a possible antipsoriatic compound. As there is still no detailed information on this topic, we examined the effects of genistein by using an in vitro model of both, normal and "psoriasis-like" keratinocytes at this stage of our work exhaustively testing the selected flavonoid in a mono-treated experimental design. Gene expression studies revealed transcriptional changes that confirms known disease-associated pathways and highlights many psoriasis-related genes. Our results suggested that aberrant expression of genes contributing to the progress of psoriasis could be improved by the action of genistein. Genistein prevented "cytokine mix" as well as TNF-α-induced NF-κB nuclear translocation, with no effect on the PI3K signaling cascade, indicating the luck of turning this pathway into NF-κB activation. It could have attenuated TNF-α and LPS-induced inflammatory responses by suppressing ROS activation. Regardless of the type of keratinocyte stimulation used, reduction of cytokine IL-8, IL-20 and CCL2 production (both at RNA and protein level) following genistein treatment was visible. Because investigations of other groups supported our commentary on potential administration of genistein as a potential weapon in the armamentarium against psoriasis, it is believed that this paper should serve to encourage researchers to conduct further studies on this subject.
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Affiliation(s)
- Elwira Smolińska
- Department of Medical Biology and Genetics, University of Gdańsk, Gdańsk, Poland
- Department of Physiology, Medical University of Gdańsk, Gdańsk, Poland
| | - Marta Moskot
- Department of Medical Biology and Genetics, University of Gdańsk, Gdańsk, Poland
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Laboratory of Molecular Biology, Gdańsk, Poland
| | | | - Grzegorz Węgrzyn
- Department of Molecular Biology, University of Gdańsk, Gdańsk, Poland
| | - Bogdan Banecki
- Department of Molecular and Cellular Biology, Intercollegiate Faculty of Biotechnology UG-MUG, Gdańsk, Poland
| | - Aneta Szczerkowska-Dobosz
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, Gdańsk, Poland
| | - Dorota Purzycka-Bohdan
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, Gdańsk, Poland
| | - Magdalena Gabig-Cimińska
- Department of Medical Biology and Genetics, University of Gdańsk, Gdańsk, Poland
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Laboratory of Molecular Biology, Gdańsk, Poland
- * E-mail:
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72772
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Treatment of Infections Caused by Extended-Spectrum-Beta-Lactamase-, AmpC-, and Carbapenemase-Producing Enterobacteriaceae. Clin Microbiol Rev 2018; 31:31/2/e00079-17. [PMID: 29444952 DOI: 10.1128/cmr.00079-17] [Citation(s) in RCA: 421] [Impact Index Per Article: 70.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Therapy of invasive infections due to multidrug-resistant Enterobacteriaceae (MDR-E) is challenging, and some of the few active drugs are not available in many countries. For extended-spectrum β-lactamase and AmpC producers, carbapenems are the drugs of choice, but alternatives are needed because the rate of carbapenem resistance is rising. Potential active drugs include classic and newer β-lactam-β-lactamase inhibitor combinations, cephamycins, temocillin, aminoglycosides, tigecycline, fosfomycin, and, rarely, fluoroquinolones or trimethoprim-sulfamethoxazole. These drugs might be considered in some specific situations. AmpC producers are resistant to cephamycins, but cefepime is an option. In the case of carbapenemase-producing Enterobacteriaceae (CPE), only some "second-line" drugs, such as polymyxins, tigecycline, aminoglycosides, and fosfomycin, may be active; double carbapenems can also be considered in specific situations. Combination therapy is associated with better outcomes for high-risk patients, such as those in septic shock or with pneumonia. Ceftazidime-avibactam was recently approved and is active against KPC and OXA-48 producers; the available experience is scarce but promising, although development of resistance is a concern. New drugs active against some CPE isolates are in different stages of development, including meropenem-vaborbactam, imipenem-relebactam, plazomicin, cefiderocol, eravacycline, and aztreonam-avibactam. Overall, therapy of MDR-E infection must be individualized according to the susceptibility profile, type, and severity of infection and the features of the patient.
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72773
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A novel autophagy inhibitor berbamine blocks SNARE-mediated autophagosome-lysosome fusion through upregulation of BNIP3. Cell Death Dis 2018; 9:243. [PMID: 29445175 PMCID: PMC5833711 DOI: 10.1038/s41419-018-0276-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/07/2017] [Accepted: 12/27/2017] [Indexed: 11/08/2022]
Abstract
Increasing evidences reveal that autophagy inhibitor could enhance the effect of chemotherapy to cancer. However, few autophagy inhibitors are currently approved for clinical application in humans. Berbamine (BBM) is a natural compound extracted from traditional Chinese medicine that is widely used for treatment of a variety of diseases without any obvious side effects. Here we found that BBM is a novel auophagy inhibitor, which potently induced the accumulation of autophagosomes by inhibiting autophagosome-lysosome fusion in human breast cancer cells. Mechanistically, we found that BBM blocked autophagosome-lysosome fusion by inhibiting the interaction of SNAP29 and VAMP8. Furthermore, BBM induced upregulation of BNIP3 and the interaction between SNAP29 and BNIP3. BNIP3 depletion or SNAP29 overexpression abrogated BBM-mediated blockade of autophagosome-lysosome fusion through the interaction between SNAP29 and VAMP8, whereas BNIP3 overexpression blocked autophagosome-lysosome fusion through inhibition of the interaction between SNAP29 and VAMP8. These findings suggest that upregulation of BNIP3 and interaction between BNIP3 and SNAP29 could be involved in BBM-mediated blockade of autophagosome-lysosome fusion through inhibition of the interaction between SNAP29 and VAMP8. Our findings identify the critical role of BNIP3 in blockade of autophagosome-lysosome fusion mediated by BBM, and suggest that BBM could potentially be further developed as a novel autophagy inhibitor, which could enhance the effect of chemotherapy to cancer.
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72774
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Wang J, Ye C, Xiong H, Shen Y, Lu Y, Zhou J, Wang L. Dysregulation of long non-coding RNA in breast cancer: an overview of mechanism and clinical implication. Oncotarget 2018; 8:5508-5522. [PMID: 27732939 PMCID: PMC5354927 DOI: 10.18632/oncotarget.12537] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 10/03/2016] [Indexed: 01/16/2023] Open
Abstract
Long non-coding RNAs (lncRNAs), which occupy nearly 98% of genome, have crucial roles in cancer development, including breast cancer. Breast cancer is a disease with high incidence. Despite of recent progress in understanding the molecular mechanisms and combined therapy strategies, the functions and mechanisms of lncRNAs in breast cancer remains unclear. This review presents the currently basic knowledge and research approaches of lncRNAs. We also highlight the latest advances of seven classic lncRNAs and three novel lncRNAs in breast cancer, elucidating their mechanisms and possible therapeutic targets. Additionally, association between lncRNA and specific molecular subtype of breast cancer is reported. Lastly, we briefly delineate the potential roles of lncRNAs in clinical applications as biomarkers and treatment targets.
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Affiliation(s)
- Ji Wang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Chenyang Ye
- Cancer Institute (Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Second Affiliated Hospital, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hanchu Xiong
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yong Shen
- Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yi Lu
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jichun Zhou
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Linbo Wang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, Zhejiang, China.,Biomedical Research Center and Key Laboratory of Biotherapy of Zhejiang Province, Hangzhou, Zhejiang, China
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72775
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Tian L, Yang Y, Li C, Chen J, Li Z, Li X, Li S, Wu F, Hu Z, Yang Z. The cytotoxicity of coxsackievirus B3 is associated with a blockage of autophagic flux mediated by reduced syntaxin 17 expression. Cell Death Dis 2018; 9:242. [PMID: 29445155 PMCID: PMC5833838 DOI: 10.1038/s41419-018-0271-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 12/08/2017] [Accepted: 12/22/2017] [Indexed: 12/19/2022]
Abstract
Coxsackievirus B3 (CVB3) is an important human pathogen linked to cardiac arrhythmias and acute heart failure. CVB3 infection has been reported to induce the formation of autophagosomes that support the viral replication in host cells. Interestingly, our study shows that the accumulation of autophagosomes during CVB3 infection is caused by a blockage of autophagosome–lysosome fusion rather than the induction of autophagosome biogenesis. Moreover, CVB3 decreases the transcription and translation of syntaxin 17 (STX17), a SNARE (soluble N-ethylmaleimide-sensitive factor activating protein receptor) protein involved in autophagosome–lysosome fusion. Overexpression of STX17 restored the autophagic flux, alleviated the virus-induced lysosomal dysfunction, and decreased the apoptosis induced by CVB3 infection in HeLa cells. Taken together, our results suggest that CVB3 infection impairs the autophagic flux by blocking autophagosome–lysosome fusion. These findings thus point to potential new therapeutic strategies targeting STX17 or autophagosome–lysosome fusion for treating CVB3-associated diseases.
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Affiliation(s)
- Lang Tian
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Yeyi Yang
- Department of Medicine, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Chunyun Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Jia Chen
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Zhuoying Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Xin Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Shentang Li
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China
| | - Fang Wu
- Department of Pediatrics, Daping Hospital and Field Surgery Institute, Third Military Medical University, 400042, Chongqing, China
| | - Zhangxue Hu
- Department of Pediatrics, Daping Hospital and Field Surgery Institute, Third Military Medical University, 400042, Chongqing, China.
| | - Zuocheng Yang
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, 410013, Changsha, China.
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72776
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Liu Y, Tong J, Tong Y, Li P, Cui X, Cao H. In vitro anti-influenza virus effect of total flavonoid from Trollius ledebouri Reichb. J Int Med Res 2018; 46:1380-1390. [PMID: 29444614 PMCID: PMC6091840 DOI: 10.1177/0300060517750284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective To investigate the in vitro antivirus effect of total flavonoid from Trollius ledebouri Reichb (TFTLR). Methods Madin-Darby canine kidney (MDCK) and Human epithelial type 2 (HEp-2) cell lines were used to test the antivirus effect of TFTLR on nine virus subtypes: four H1N1, one H3N2, and four other subtypes prevalent in North China. Tamiflu, Ribavirin and Lianhua Qingwen were used as active comparators. Comprehensive molecular pathway analyses of TFTLR-H1N1 and TFTLR-H3N2 relationships were also conducted. Results TFTLR inhibited MDCK cell lesions induced by H1N1 subtypes (A/FM1/1/47, A/Puerto Rico/8/1934 H1N1, A1/Tianjin Jinnan/15/2009, and A/Brisbane/59/2007) and by the H3N2 Brisbane/10/2009 strain. TFTLR inhibitory concentration (IC)50 values against these viruses were 0.13, 0.07, 0.06, 0.14, and 0.07 mg/ml, respectively; and therapeutic index (TI) values were 8.62, 16.0, 18.67, 8.0, and 16.0, respectively. TFTLR showed no effect on parainfluenza virus type 1, herpes simplex virus type 1, respiratory syncytial virus, and coxsackie group B virus type 4. Pathway analysis revealed possible functional therapeutic mechanisms for TFTLR against H1N1 and H3N2 infections. Conclusion TFTLR may represent a potential therapeutic agent against influenza A subtypes H1N1 and H3N2 that are prevalent in North China, and should be investigated further.
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Affiliation(s)
- Yongping Liu
- 1 Laboratory of Pharmacology and Toxicology of Key Laboratory for Research and Development of Chinese Materia Medica in Hebei Province, China; Department of Pharmacology and Toxicology, Institute of Chinese Materia Medica, 92979 Chengde Medical University , China
| | - Jiming Tong
- 1 Laboratory of Pharmacology and Toxicology of Key Laboratory for Research and Development of Chinese Materia Medica in Hebei Province, China; Department of Pharmacology and Toxicology, Institute of Chinese Materia Medica, 92979 Chengde Medical University , China
| | - Ying Tong
- 2 Radiology Department, Affiliated Hospital of 92979 Chengde Medical University , Chengde, China
| | - Ping Li
- 1 Laboratory of Pharmacology and Toxicology of Key Laboratory for Research and Development of Chinese Materia Medica in Hebei Province, China; Department of Pharmacology and Toxicology, Institute of Chinese Materia Medica, 92979 Chengde Medical University , China
| | - Xiaolan Cui
- 3 Department of Pharmacology, 417459 Institute of Chinese Materia Medica, Chinese Academy of Chinese Medicine sciences , Beijing, China
| | - Hongbao Cao
- 4 Department of Genomics Research, R&D Solutions, Elsevier Inc., Rockville, MD, USA
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72777
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Folestad E, Kunath A, Wågsäter D. PDGF-C and PDGF-D signaling in vascular diseases and animal models. Mol Aspects Med 2018; 62:1-11. [PMID: 29410092 DOI: 10.1016/j.mam.2018.01.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 11/14/2017] [Accepted: 01/22/2018] [Indexed: 01/06/2023]
Abstract
Members of the platelet-derived growth factor (PDGF) family are well known to be involved in different pathological conditions. The cellular and molecular mechanisms induced by the PDGF signaling have been well studied. Nevertheless, there is much more to discover about their functions and some important questions to be answered. This review summarizes the known roles of two of the PDGFs, PDGF-C and PDGF-D, in vascular diseases. There are clear implications for these growth factors in several vascular diseases, such as atherosclerosis and stroke. The PDGF receptors are broadly expressed in the cardiovascular system in cells such as fibroblasts, smooth muscle cells and pericytes. Altered expression of the receptors and the ligands have been found in various cardiovascular diseases and current studies have shown important implications of PDGF-C and PDGF-D signaling in fibrosis, neovascularization, atherosclerosis and restenosis.
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Affiliation(s)
- Erika Folestad
- Division of Vascular Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Anne Kunath
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Dick Wågsäter
- Division of Drug Research, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
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72778
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Ratelade J, Mezouar N, Domenga-Denier V, Rochey A, Plaisier E, Joutel A. Severity of arterial defects in the retina correlates with the burden of intracerebral haemorrhage in COL4A1-related stroke. J Pathol 2018; 244:408-420. [PMID: 29266233 DOI: 10.1002/path.5023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/23/2017] [Accepted: 12/12/2017] [Indexed: 12/26/2022]
Abstract
Mutations in the α1 (COL4A1) or α2 (COL4A2) chains of collagen type IV, a major component of the vascular basement membrane, cause intracerebral haemorrhages with variable expressivity and reduced penetrance by mechanisms that remain poorly understood. Here we sought to investigate the cellular mechanisms of COL4A1-related intracerebral haemorrhage and identify a marker for haemorrhage risk stratification. A combination of histological, immunohistochemical, and electron microscopy analyses were used to analyse the brain parenchyma, cerebrovasculature, and retinal vessels of mice expressing the disease-causing COL4A1 p.G498V mutation. Mutant mice developed cerebral microhaemorrhages and macroscopic haemorrhages (macrohaemorrhages), the latter with reduced penetrance, mimicking the human disease. Microhaemorrhages that occurred in early postnatal life were associated with a transient, generalized increase in blood-brain barrier permeability at the level of capillaries. Macrohaemorrhages, which occurred later in life, originated from deep brain arteries with focal loss of smooth muscle cells. Similar smooth muscle cell loss was detected in retinal arteries, and a time-course analysis of arterial lesions showed that smooth muscle cells are recruited normally in arterial wall during development, but undergo progressive apoptosis-mediated degeneration. By assessing in parallel the extent of these retinal arterial lesions and the presence/absence of macrohaemorrhages, we found that the arterial lesion load in the retina is strongly correlated with the burden of macrohaemorrhages. We conclude that microhaemorrhages and macrohaemorrhages are driven by two distinct mechanisms. Moreover, smooth muscle cell degeneration is a critical factor underlying the partial penetrance of COL4A1-related macrohaemorrhages, and retinal imaging is a promising tool for identifying high-risk patients. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Julien Ratelade
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot - Paris 7, Paris, France
| | - Nicolas Mezouar
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot - Paris 7, Paris, France
| | - Valérie Domenga-Denier
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot - Paris 7, Paris, France
| | - Ambre Rochey
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot - Paris 7, Paris, France
| | - Emmanuelle Plaisier
- Department of Nephrology and Dialysis, AP-HP, Hôpital Tenon, Paris, France.,From Rare and Common Kidney Diseases, Remodeling and Repair, INSERM, Sorbonne Universités, Université Pierre et Marie Curie - Paris 6, Paris, France
| | - Anne Joutel
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot - Paris 7, Paris, France.,DHU NeuroVasc, Sorbonne Paris Cité, Paris, France
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72779
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Gallant JN, Lovly CM. Established, emerging and elusive molecular targets in the treatment of lung cancer. J Pathol 2018; 244:565-577. [PMID: 29344953 PMCID: PMC10182407 DOI: 10.1002/path.5038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 12/22/2017] [Accepted: 12/24/2017] [Indexed: 12/31/2022]
Abstract
Although histological subtype still underlies tumour classification and treatment, the recognition that lung cancer is, largely, a genetic disease has prompted a push to reconfigure cancer taxonomies according to molecular criteria. In this review, we discuss established (e.g. EGFR, ALK, ROS1, and programmed cell death 1/programmed death-ligand 1), emerging (e.g. MET, RET, and NTRK) and elusive (e.g. TP53, KRAS, and MYC) molecular targets in the treatment of lung cancer. We synthesize a large and rapidly growing body of literature regarding the discovery and therapeutic inhibition of these targets in lung cancer. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Jean-Nicolas Gallant
- Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Christine M Lovly
- Division of Hematology-Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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72780
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Lauková M, Velíšková J, Velíšek L, Shakarjian MP. Developmental and sex differences in tetramethylenedisulfotetramine (TMDT)-induced syndrome in rats. Dev Neurobiol 2018; 78:403-416. [PMID: 29411537 DOI: 10.1002/dneu.22582] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/15/2018] [Accepted: 02/01/2018] [Indexed: 12/21/2022]
Abstract
Tetramethylenedisulfotetramine (TMDT) is a synthetic neurotoxic rodenticide considered a chemical threat agent. Symptoms of intoxication include seizures leading to status epilepticus and death. While children and women have been often the victims, no studies exist investigating the neurotoxic effects of TMDT in developing individuals or females. Thus, we performed such an investigation in developing Sprague-Dawley rats of both sexes in order to identify potential age- or sex-dependent vulnerability to TMDT exposure. Subcutaneous injection was chosen as the preferred route of TMDT exposure. EEG recordings confirmed the seizure activity observed in both postnatal day 15 (P15) and adult rats. Additionally, P15 rats displayed greater sensitivity to TMDT than postnanatal day 25 or adult animals. Seizures were generally more severe in females compared to males. Barrel rotations accompanied convulsions in P25 and adult, but sparsely in P15 rats. Adults developed barrel rolling less frequently than P25 population. Neuronal cell death was not present in 24-h TMDT survivors at any age or sex tested. A seizure rechallenge with flurothyl 7 days following TMDT exposure demonstrated longer latencies to the first clonic seizure but a faster progression into the tonic-clonic seizure in P15 and adult survivors as compared to their vehicle-injected counterparts. In conclusion, the youngest age group represents the most vulnerable population to the TMDT-induced toxidrome. Females appear to be more vulnerable than males. TMDT exposure promotes seizure spread and progression in survivors. These findings will help to establish sex- and age-specific treatment strategies for TMDT-exposed individuals. © 2018 Wiley Periodicals, Inc. Develop Neurobiol 78: 403-416, 2018.
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Affiliation(s)
- Marcela Lauková
- Department of Public Health, Division of Environmental Health Science, School of Health Sciences and Practice, New York Medical College, Valhalla, New York.,Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Jana Velíšková
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Obstetrics and Gynecology, New York Medical College, Valhalla, New York.,Department of Neurology, New York Medical College, Valhalla, New York
| | - Libor Velíšek
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Neurology, New York Medical College, Valhalla, New York.,Department of Pediatrics, New York Medical College, Valhalla, New York
| | - Michael P Shakarjian
- Department of Public Health, Division of Environmental Health Science, School of Health Sciences and Practice, New York Medical College, Valhalla, New York.,Department of Cell Biology and Anatomy, New York Medical College, Valhalla, New York.,Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rutgers-Robert Wood Johnson Medical School, Piscataway, New Jersey
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72781
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Zhong J, Yu H, Huang C, Zhong Q, Chen Y, Xie J, Zhou Z, Xu J, Wang H. Inhibition of phosphodiesterase 4 by FCPR16 protects SH-SY5Y cells against MPP +-induced decline of mitochondrial membrane potential and oxidative stress. Redox Biol 2018; 16:47-58. [PMID: 29475134 PMCID: PMC5842311 DOI: 10.1016/j.redox.2018.02.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 02/09/2018] [Accepted: 02/12/2018] [Indexed: 12/25/2022] Open
Abstract
Phosphodiesterase 4 (PDE4) is a promising target for the treatment of Parkinson's disease (PD). However, the underlying mechanism has not yet been well elucidated. Additionally, most of current PDE4 inhibitors produce severe nausea and vomiting response in patients, which limit their clinical application. FCPR16 is a novel PDE4 inhibitor with little emetic potential. In the present study, the neuroprotective effect and underlying mechanism of FCPR16 against cellular apoptosis induced by 1-methyl-4-phenylpyridinium (MPP+) were examined in SH-SY5Y cells. FCPR16 (12.5–50 μM) dose-dependently reduced MPP+-induced loss of cell viability, accompanied by reductions in nuclear condensation and lactate dehydrogenase release. The level of cleaved caspase 3 and the ratio of Bax/Bcl-2 were also decreased after treatment with FCPR16 in MPP+-treated cells. Furthermore, FCPR16 (25 μM) significantly suppressed the accumulation of reactive oxygen species (ROS), prevented the decline of mitochondrial membrane potential (Δψm) and attenuated the expression of malonaldehyde level. Further studies disclosed that FCPR16 enhanced the levels of cAMP and the exchange protein directly activated by cAMP (Epac) in SH-SY5Y cells. Western blotting analysis revealed that FCPR16 increased the phosphorylation of cAMP response element-binding protein (CREB) and protein kinase B (Akt) down-regulated by MPP+ in SH-SY5Y cells. Moreover, the inhibitory effects of FCPR16 on the production of ROS and Δψm loss could be blocked by PKA inhibitor H-89 and Akt inhibitor KRX-0401. Collectively, these results suggest that FCPR16 attenuates MPP+-induced dopaminergic degeneration via lowering ROS and preventing the loss of Δψm in SH-SY5Y cells. Mechanistically, cAMP/PKA/CREB and Epac/Akt signaling pathways are involved in these processes. Our findings indicate that FCPR16 is a promising pre-clinical candidate for the treatment of PD and possibly other oxidative stress-related neuronal diseases. FCPR16 protected SH-SY5Y cells against MPP+-induced apoptosis. FCPR16 attenuated Δψm loss and ROS generation in SH-SY5Y cells treated with MPP+. FCPR16 activated cAMP/PKA/CREB and Epac/Akt signaling pathways in SH-SY5Y cells. Blocking cAMP/PKA/CREB or Epac/Akt pathways canceled the protective role of FCPR16.
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Affiliation(s)
- Jiahong Zhong
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Hui Yu
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Chang Huang
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Qiuping Zhong
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yaping Chen
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jinfeng Xie
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhongzhen Zhou
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jiangping Xu
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
| | - Haitao Wang
- Department of Neuropharmacology and Drug Discovery, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
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72782
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Toton E, Romaniuk A, Konieczna N, Hofmann J, Barciszewski J, Rybczynska M. Impact of PKCε downregulation on autophagy in glioblastoma cells. BMC Cancer 2018; 18:185. [PMID: 29439667 PMCID: PMC5811983 DOI: 10.1186/s12885-018-4095-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 02/05/2018] [Indexed: 12/14/2022] Open
Abstract
Background Several efforts have been focused on identification of pathways involved in malignancy, progression, and response to treatment in Glioblastoma (GB). Overexpression of PKCε was detected in histological samples from GB, anaplastic astrocytoma, and gliosarcoma and is considered an important marker of negative disease outcome. In multiple studies on GB, autophagy has been shown as a survival mechanism during cellular stress, contributing to resistance against anti-cancer agents. The main object of this research was to determine the influence of PKCε downregulation on the expression of genes involved in autophagy pathways in glioblastoma cell lines U-138 MG and U-118 MG with high PKCε level. Methods We conducted siRNA-mediated knockdown of PKCε in glioblastoma cell lines and studied the effects of autophagy pathway. The expression of autophagy-related genes was analyzed using qPCR and Western blot analysis was carried out to assess protein levels. Immunostaining was used to detect functional autophagic maturation process. Results We found that these cell lines exhibited a high basal expression of autophagy-related genes. Our results suggest that the loss of PKCε contributes to the downregulation of genes involved in autophagy pathways. Moreover, most of the changes we observed in Western blot analysis and endogenous immunofluorescence experiments confirmed dysfunction of autophagy programs. We found that knockdown of PKCε induced a decrease in the expression of Beclin1, Atg5, PI3K, whereas the expression of other autophagy-related proteins mTOR and Bcl2 was increased. Treatment of control siRNA glioma cells with rapamycin-induced autophagosome formation and increase in LC3-II level and caused a decrease in the expression of p62. Additionally, PKCε siRNA caused a diminution in the Akt phosphorylation at Ser473 and in the protein level in both cell lines. Moreover, we observed reduction in the adhesion of glioblastoma cells, accompanied by the decrease in total FAK protein level and phosphorylation. Conclusions Effects of down-regulation of PKCε in glioma cells raised the possibility that the expression of PKCε is essential for the autophagic signal transduction pathways in these cells. Thus, our results identify an important role of PKCε in autophagy and may, more importantly, identifyit as a novel therapeutic target.
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Affiliation(s)
- Ewa Toton
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49 St., 60-355, Poznan, Poland.
| | - Aleksandra Romaniuk
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49 St., 60-355, Poznan, Poland
| | - Natalia Konieczna
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49 St., 60-355, Poznan, Poland
| | - Johann Hofmann
- Biocenter, Division of Medical Biochemistry, Innsbruck Medical University, Innrain 80-82, A-6020, Innsbruck, Austria
| | - Jan Barciszewski
- NanoBioMedical Center, Adam Mickiewicz University in Poznan, Poznan, Poland.,Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Maria Rybczynska
- Department of Clinical Chemistry and Molecular Diagnostics, Poznan University of Medical Sciences, Przybyszewskiego 49 St., 60-355, Poznan, Poland
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72783
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Sha F, Chang Q, Law YW, Hong Q, Yip PSF. Suicide rates in China, 2004-2014: comparing data from two sample-based mortality surveillance systems. BMC Public Health 2018; 18:239. [PMID: 29433460 PMCID: PMC5809896 DOI: 10.1186/s12889-018-5161-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 02/06/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The decreasing suicide rate in China has been regarded as a major contributor to the decline of global suicide rate in the past decade. However, previous estimations on China's suicide rates might not be accurate, since often they were based on the data from the Ministry of Health's Vital Registration ("MOH-VR") System, which is biased towards the better-off population. This study aims to compare suicide data extracted from the MOH-VR System with a more representative mortality surveillance system, namely the Center for Disease Control and Prevention's Disease Surveillance Points ("CDC-DSP") System, and update China's national and subnational suicide rates in the period of 2004-2014. METHODS The CDC-DSP data are obtained from the National Cause-of-Death Surveillance Dataset (2004-2014) and the MOH-VR data are from the Chinese Health Statistics Yearbooks (2005-2012) and the China Health and Family Planning Statistics Yearbooks (2013-2015). First, a negative binomial regression model was used to test the associations between the source of data (CDC-DSP/MOH-VR) and suicide rates in 2004-2014. Joinpoint regression analyses and Kitagawa's decomposition method are then applied to analyze the trends of the crude suicide rates. RESULTS Both systems indicated China's suicide rates decreased over the study period. However, before the two systems merged in 2013, the CDC-DSP System reported significantly higher national suicide rates (IRR = 1.18, 95% Confidence Interval [CI]: 1.13-1.24) and rural suicide rates (IRR = 1.29, 95% CI: 1.21-1.38) than the MOH-VR System. The CDC-DSP System also showed significant reversing points in 2011 (95% CI: 2006-2012) and 2006 (95% CI: 2006-2008) on the rural and urban suicide trends. Moreover, the suicide rates in the east and central urban regions were reversed in 2011 and 2008. CONCLUSIONS The biased MOH-VR System underestimated China's national and rural suicide rates. Although not widely appreciated in the field of suicide research, the CDC-DSP System provides more accurate estimations on China's suicide rates and is recommended for future studies to monitor the reversing trends of suicide rates in China's more developed areas.
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Affiliation(s)
- Feng Sha
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
| | - Qingsong Chang
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
| | - Yik Wa Law
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China.,Hong Kong Jockey Club Centre for Suicide Research and Prevention, The University of Hong Kong, Hong Kong, China
| | - Qi Hong
- Department of Public Courses, Shenzhen Institute of Information Technology, Shenzhen, China
| | - Paul S F Yip
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China.
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72784
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Han X, Liu Y, Kam WR, Sullivan DA. Effect of brimonidine, an α2 adrenergic agonist, on human meibomian gland epithelial cells. Exp Eye Res 2018; 170:20-28. [PMID: 29452108 DOI: 10.1016/j.exer.2018.02.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/09/2018] [Accepted: 02/12/2018] [Indexed: 01/15/2023]
Abstract
We recently discovered that the anti-glaucoma pharmaceuticals timolol, a β adrenergic antagonist, and pilocarpine, a cholinergic compound, negatively influence the morphology, proliferative capacity and survival of human meibomian gland epithelial cells (HMGECs). We hypothesize that another class of anti-glaucoma drugs, the α2 adrenergic agonists, also acts directly on HMGECs to affect their structure and function. We tested this hypothesis. Immortalized (i) HMGECs were cultured with brimonidine, as well as clonidine (α2 agonist), phenylephrine (α1 agonist), RX821002 (inverse α2 agonist) and MK912 (neutral α2 agonist) for up to 7 days. Cells were counted with a hemocytometer, and evaluated for morphology, signaling pathway activity, protein biomarker expression, and the accumulation of neutral lipids, phospholipids and lysosomes. Our findings demonstrate that brimondine treatment induces a dose-dependent decrease in Akt signaling and proliferation of iHMGECs. In contrast, brimonidine also promotes a dose-dependent differentiation of iHMGECs, including an increase in neutral lipid, phospholipid and lysosome levels. These effects were paralleled by an inhibition of p38 signaling, and duplicated by cellular exposure to clonidine, but not phenylephrine. Brimonidine also enhanced the cellular content of sterol regulatory binding protein-1, a master regulator of lipid synthesis. Of particular interest, the putative α2 antagonists, RX821002 and MK912, did not interfere with brimonidine action, but rather stimulated IHMGEC differentiation. Our results support our hypothesis and demonstrate that α2 adrenergic agonists act directly on iHMGECs. However, these compounds do not elicit an overall negative effect. Rather, the α2 agonists promote the differentiation of iHMGECs.
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Affiliation(s)
- Xi Han
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA; Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Liu
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - Wendy R Kam
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA
| | - David A Sullivan
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, USA.
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72785
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Li G, Dong T, Yang D, Gao A, Luo J, Yang H, Wang L. Progranulin promotes lymphangiogenesis through VEGF-C and is an independent risk factor in human esophageal cancers. Hum Pathol 2018; 75:116-124. [PMID: 29452214 DOI: 10.1016/j.humpath.2018.02.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 01/31/2018] [Accepted: 02/02/2018] [Indexed: 01/06/2023]
Abstract
Lymph node metastasis is one of the most important predictors of the prognosis for esophageal cancer (EC) patients. However, the mechanism underlying the lymph node metastasis is largely unknown. Progranulin (PGRN) is shown to be highly expressed in various types of cancers and could promote the angiogenesis and epithelial-mesenchymal transition of cancer cells in previous studies. However, the expression status of PGRN and its effects on the lymphangiogenesis in EC are largely unclear. In this study, we show for the first time that PGRN is expressed in EC tissue samples and cell lines and could promote the expression of VEGF-C in vitro, a well-known lymphangiogenesis inducer, through the putative signaling transducers p-ERK and p-AKT. Besides, increased levels of PGRN are correlated with lymph node metastasis, high levels of lymph microvessel density, and lymph vessel space invasion in tissue samples of EC patients. In addition, Cox proportional risk model shows that patients with high levels of PGRN would have 2-fold increases in 5-year mortality compared with patients with low levels of PGRN. Finally, we establish a clinically useful nomogram to predict the possibility of mortality for individual EC patients. In conclusion, PGRN may play an important role in the lymphangiogenesis through activation of VEGF-C in the EC patients.
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Affiliation(s)
- Guanhua Li
- Department of Respiratory, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong 250013, PR China
| | - Taotao Dong
- Department of Gynecology and Obstetrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, PR China
| | - Dong Yang
- Department of Oncology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272129, PR China
| | - Aiqin Gao
- Department of Oncology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong 250013, PR China
| | - Judong Luo
- Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Hongyan Yang
- Department of Oncology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong 250013, PR China
| | - Linlin Wang
- Department of Oncology, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong 250013, PR China; Department of Radiation Oncology, Shandong Cancer Hospital affiliated to Shandong University, Shandong Academy of Medical Sciences, Jinan 250117, China.
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72786
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Abstract
There is preclinical and recent epidemiological evidence that thyroid hormone supports breast cancer. These observations raise the issue of whether management of breast cancer in certain settings should include consideration of reducing the possible contribution of thyroid hormone to the advancement of the disease. In a preliminary experience, elimination of the clinical action of endogenous L-thyroxine (T4) in patients with advanced solid tumors, including breast cancer, has favorably affected the course of the cancer, particularly when coupled with administration of exogenous 3,5,3′-triiodo-L-thyronine (T3) (euthyroid hypothyroxinemia). We discuss in the current brief review the possible clinical settings in which to consider whether endogenous thyroid hormone—or exogenous thyroid hormone in the patient with hypothyroidism and coincident breast cancer—is significantly contributing to breast cancer outcome.
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72787
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Wang S, Kobeissi A, Dong Y, Kaplan N, Yang W, He C, Zeng K, Peng H. MicroRNAs-103/107 Regulate Autophagy in the Epidermis. J Invest Dermatol 2018; 138:1481-1490. [PMID: 29452119 DOI: 10.1016/j.jid.2018.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 02/03/2018] [Accepted: 02/05/2018] [Indexed: 12/23/2022]
Abstract
We have shown that microRNAs-103 and -107 (miRs-103/107) positively regulate end-stage autophagy by ensuring dynamin activity in cultured keratinocytes. Most work in end-stage autophagy has been conducted using in vitro model systems. In vivo regulation of end-stage autophagy in epidermis remains unknown. Here, we used antagomirs to subcutaneously knock down miR-107 in the skin; conversely, we delivered miR-107 mimic subcutaneously via in vivo transfection to increase this miR. We found that antagomir-107 treatment in epidermis: (i) depleted endogenous miR-107; (ii) increased GFP-LC3 puncta in epidermal basal layers of GFP-LC3 transgenic mice, indicative of an accumulation of autophagosomes; (iii) inhibited LC3 turnover and increased p62, suggesting an inhibition of autophagy flux; and (iv) increased phosphorylated dynamin (p-dynamin, an inactive form), a key enzyme in end-stage autophagy. Conversely, miR-107 mimic treatment in mouse epidermis: decreased GFP-LC3 puncta in basal layer, as well as p62 protein levels; and diminished p-dynamin, indicative of activation of this enzyme. In human epidermal keratinocytes, antagos-103/107 cause the formation of large vacuoles and an increase in p-dynamin, which can be rescued by inhibition of protein kinase C pathway. Collectively, these results suggest that the miR-103/107 family has a critical role in regulating end-stage autophagy in mouse epidermis via PLD1/2-protein kinase C-dynamin pathway.
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Affiliation(s)
- Sijia Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Dermatology, Northwestern University, Chicago, Illinois, USA
| | - Aya Kobeissi
- Department of Dermatology, Northwestern University, Chicago, Illinois, USA
| | - Ying Dong
- Department of Dermatology, Northwestern University, Chicago, Illinois, USA; Department of Ophthalmology, the First Affiliated Hospital, Chinese PLA General Hospital, Beijing, China
| | - Nihal Kaplan
- Department of Dermatology, Northwestern University, Chicago, Illinois, USA
| | - Wending Yang
- Department of Dermatology, Northwestern University, Chicago, Illinois, USA
| | - Congcong He
- Cell and Molecular Biology, Northwestern University, Chicago, Illinois, USA
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Han Peng
- Department of Dermatology, Northwestern University, Chicago, Illinois, USA.
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72788
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Tatone C, Di Emidio G, Barbonetti A, Carta G, Luciano AM, Falone S, Amicarelli F. Sirtuins in gamete biology and reproductive physiology: emerging roles and therapeutic potential in female and male infertility. Hum Reprod Update 2018; 24:267-289. [DOI: 10.1093/humupd/dmy003] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/19/2018] [Indexed: 12/21/2022] Open
Affiliation(s)
- Carla Tatone
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Gynecology Unit, Reproductive Service, San Salvatore Hospital, Via Vetoio, 67100 L’Aquila, Italy
| | - Giovanna Di Emidio
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Gynecology Unit, Reproductive Service, San Salvatore Hospital, Via Vetoio, 67100 L’Aquila, Italy
| | | | - Gaspare Carta
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Gynecology Unit, Reproductive Service, San Salvatore Hospital, Via Vetoio, 67100 L’Aquila, Italy
| | - Alberto M Luciano
- Department of Health, Animal Science and Food Safety, Reproductive and Developmental Biology Laboratory, University of Milan, 20133 Milan, Italy
| | - Stefano Falone
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
| | - Fernanda Amicarelli
- Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
- Institute of Translational Pharmacology (IFT), CNR, 67100 L’Aquila, Italy
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72789
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Schiavone S, Trabace L. Small Molecules: Therapeutic Application in Neuropsychiatric and Neurodegenerative Disorders. Molecules 2018; 23:molecules23020411. [PMID: 29438357 PMCID: PMC6017408 DOI: 10.3390/molecules23020411] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/05/2018] [Accepted: 02/07/2018] [Indexed: 12/13/2022] Open
Abstract
In recent years, an increasing number of studies have been published, focusing on the potential therapeutic use of small catalytic agents with strong biological properties. So far, most of these works have only regarded specific clinical fields, such as oncology, infectivology and general pathology, in particular with respect to the treatment of significant inflammatory processes. However, interesting data on possible therapeutic applications of small molecules for the treatment of neuropsychiatric and neurodegenerative illnesses are emerging, especially with respect to the possibility to modulate the cellular redox state. Indeed, a crucial role of redox dysregulation in the pathogenesis of these disorders has been widely demonstrated by both pre-clinical and clinical studies, being the reduction of the total amount of free radicals a promising novel therapeutic approach for these diseases. In this review, we focused our interest on studies published during the last ten years reporting therapeutic potential of small molecules for the treatment of neuropsychiatric and neurodegenerative disorders, also based on the biological efficiency of these compounds in detecting intracellular disturbances induced by increased production of reactive oxygen species.
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Affiliation(s)
- Stefania Schiavone
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli, 20, 71122 Foggia, Italy.
| | - Luigia Trabace
- Department of Clinical and Experimental Medicine, University of Foggia, Via Napoli, 20, 71122 Foggia, Italy.
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72790
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Li J, Yan Y, Li D, Li X, Lin X, Liu Z, Xu T, Du F. Nephroprotective effects of diacylglycerol on diabetic nephropathy in type 2 diabetic rats. Exp Ther Med 2018; 15:1918-1926. [PMID: 29434785 PMCID: PMC5776634 DOI: 10.3892/etm.2017.5654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 03/31/2017] [Indexed: 01/24/2023] Open
Abstract
Diacylglycerol (DAG) has been reported to reduce the serum lipid and glucose levels more effectively compared with triacylglycerol (TAG). The present study examined the long-term effects of dietary DAG on rats with type 2 diabetic nephropathy (DN). The type 2 DN model was established by administering a high-fat and high-calorie diet along with an intraperitoneal injection of 35 mg/kg body weight streptozocin, and the disease developed over the following 8 weeks. Sprague-Dawley rats were then randomly divided into the control, TAG, low-dose DAG (Low-DAG) and high-dose DAG (High-DAG) groups. Blood glucose (BG), lipid levels and renal function parameters were then measured. The results revealed that the body weight in the High-DAG group was significantly reduced compared with the TAG group, while there was no significant difference in the food intake between TAG and DAG groups. BG, advanced glycation end products (AGEs), TAG, low-density lipoprotein cholesterol, urine protein and urine albumin levels were significantly reduced, while high-density lipoprotein cholesterol levels were significantly increased in the two DAG groups. In addition, hematoxylin-eosin stained glomeruli presented decreased glomerular enlargement and mesangial expansion in the DAG groups. Immunohistochemical detection revealed that the levels of transforming growth factor-β1 and connective tissue growth factor in renal tissues of the DAG groups were also significantly reduced compared with the TAG group. These findings indicate that DAG oils can significantly reduce BG levels and the deposition of AGEs in renal tissue, as well as regulate the levels of transforming growth factor-β1 and connective tissue growth factor, thus delaying the progression of nephropathy.
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Affiliation(s)
- Jianpeng Li
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China
| | - Yongheng Yan
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China
| | - Duo Li
- Food Science and Nutrition Department, Zhejiang University, Hangzhou, Zhejiang 310029, P.R. China
| | - Xia Li
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China
| | - Xinying Lin
- School of Public Health, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Zhenhua Liu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China.,School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA
| | - Tongcheng Xu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China
| | - Fangling Du
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Science/Shandong Provincial Key Laboratory of Agricultural Products Deep Processing, Jinan, Shandong 250100, P.R. China
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72791
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Sarikhani M, Maity S, Mishra S, Jain A, Tamta AK, Ravi V, Kondapalli MS, Desingu PA, Khan D, Kumar S, Rao S, Inbaraj M, Pandit AS, Sundaresan NR. SIRT2 deacetylase represses NFAT transcription factor to maintain cardiac homeostasis. J Biol Chem 2018; 293:5281-5294. [PMID: 29440391 DOI: 10.1074/jbc.ra117.000915] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/01/2018] [Indexed: 01/08/2023] Open
Abstract
Heart failure is an aging-associated disease that is the leading cause of death worldwide. Sirtuin family members have been largely studied in the context of aging and aging-associated diseases. Sirtuin 2 (SIRT2) is a cytoplasmic protein in the family of sirtuins that are NAD+-dependent class III histone deacetylases. In this work, we studied the role of SIRT2 in regulating nuclear factor of activated T-cells (NFAT) transcription factor and the development of cardiac hypertrophy. Confocal microscopy analysis indicated that SIRT2 is localized in the cytoplasm of cardiomyocytes and SIRT2 levels are reduced during pathological hypertrophy of the heart. SIRT2-deficient mice develop spontaneous pathological cardiac hypertrophy, remodeling, fibrosis, and dysfunction in an age-dependent manner. Moreover, young SIRT2-deficient mice develop exacerbated agonist-induced hypertrophy. In contrast, SIRT2 overexpression attenuated agonist-induced cardiac hypertrophy in cardiomyocytes in a cell-autonomous manner. Mechanistically, SIRT2 binds to and deacetylates NFATc2 transcription factor. SIRT2 deficiency stabilizes NFATc2 and enhances nuclear localization of NFATc2, resulting in increased transcription activity. Our results suggest that inhibition of NFAT rescues the cardiac dysfunction in SIRT2-deficient mice. Thus, our study establishes SIRT2 as a novel endogenous negative regulator of NFAT transcription factor.
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Affiliation(s)
- Mohsen Sarikhani
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Sangeeta Maity
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Sneha Mishra
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Aditi Jain
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Ankit K Tamta
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Venkatraman Ravi
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Mrudula S Kondapalli
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Perumal A Desingu
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Danish Khan
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Shweta Kumar
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Swathi Rao
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Meena Inbaraj
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Anwit S Pandit
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
| | - Nagalingam Ravi Sundaresan
- From the Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru 560 012, India
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72792
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Wei Z, Wang J, Shi M, Liu W, Yang Z, Fu Y. Saikosaponin a inhibits LPS-induced inflammatory response by inducing liver X receptor alpha activation in primary mouse macrophages. Oncotarget 2018; 7:48995-49007. [PMID: 27285988 PMCID: PMC5226486 DOI: 10.18632/oncotarget.9863] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 05/22/2016] [Indexed: 01/06/2023] Open
Abstract
The aim of this study was to investigate the effects of SSa on LPS-induced endotoxemia in mice and clarify the possible mechanism. An LPS-induced endotoxemia mouse model was used to confirm the anti-inflammatory activity of SSa in vivo. The primary mouse macrophages were used to investigate the molecular mechanism and targets of SSa in vitro. In vivo, the results showed that SSa improved survival during lethal endotoxemia. In vitro, our results showed that SSa dose-dependently inhibited the expression of TNF-α, IL-6, IL-1β, IFN-β-and RANTES in LPS-stimulated primary mouse macrophages. Western blot analysis showed that SSa suppressed LPS-induced NF-κB and IRF3 activation. Furthermore, SSa disrupted the formation of lipid rafts by depleting cholesterol and inhibited TLR4 translocation into lipid rafts. Moreover, SSa activated LXRα, ABCA1 and ABCG1. Silencing LXRα abrogated the effect of SSa. In conclusion, the anti-inflammatory effects of SSa is associated with activating LXRα dependent cholesterol efflux pathway which result in disrupting lipid rafts by depleting cholesterol and reducing translocation of TLR4 to lipid rafts, thereby attenuating LPS mediated inflammatory response.
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Affiliation(s)
- Zhengkai Wei
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
| | - Jingjing Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
| | - Mingyu Shi
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
| | - Weijian Liu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
| | - Zhengtao Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
| | - Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, People's Republic of China
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72793
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Gonzalez VD, Samusik N, Chen TJ, Savig ES, Aghaeepour N, Quigley DA, Huang YW, Giangarrà V, Borowsky AD, Hubbard NE, Chen SY, Han G, Ashworth A, Kipps TJ, Berek JS, Nolan GP, Fantl WJ. Commonly Occurring Cell Subsets in High-Grade Serous Ovarian Tumors Identified by Single-Cell Mass Cytometry. Cell Rep 2018; 22:1875-1888. [PMID: 29444438 PMCID: PMC8556706 DOI: 10.1016/j.celrep.2018.01.053] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 12/18/2017] [Accepted: 01/17/2018] [Indexed: 01/16/2023] Open
Abstract
We have performed an in-depth single-cell phenotypic characterization of high-grade serous ovarian cancer (HGSOC) by multiparametric mass cytometry (CyTOF). Using a CyTOF antibody panel to interrogate features of HGSOC biology, combined with unsupervised computational analysis, we identified noteworthy cell types co-occurring across the tumors. In addition to a dominant cell subset, each tumor harbored rarer cell phenotypes. One such group co-expressed E-cadherin and vimentin (EV), suggesting their potential role in epithelial mesenchymal transition, which was substantiated by pairwise correlation analyses. Furthermore, tumors from patients with poorer outcome had an increased frequency of another rare cell type that co-expressed vimentin, HE4, and cMyc. These poorer-outcome tumors also populated more cell phenotypes, as quantified by Simpson's diversity index. Thus, despite the recognized genomic complexity of the disease, the specific cell phenotypes uncovered here offer a focus for therapeutic intervention and disease monitoring.
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Affiliation(s)
- Veronica D Gonzalez
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nikolay Samusik
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Tiffany J Chen
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Erica S Savig
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nima Aghaeepour
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - David A Quigley
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, 1450 Third Street, San Francisco, CA 94158, USA; Department of Epidemiology and Biostatistics, University of California, San Francisco, 1450 Third Street, San Francisco, CA 94158, USA
| | - Ying-Wen Huang
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Valeria Giangarrà
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alexander D Borowsky
- Center for Comparative Medicine, University of California, Davis, Davis, CA 95616, USA; Department of Pathology and Laboratory Medicine, Comprehensive Cancer Center, University of California, Davis School of Medicine, Sacramento, CA 95817, USA
| | - Neil E Hubbard
- Center for Comparative Medicine, University of California, Davis, Davis, CA 95616, USA; Department of Pathology and Laboratory Medicine, Comprehensive Cancer Center, University of California, Davis School of Medicine, Sacramento, CA 95817, USA
| | - Shih-Yu Chen
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Guojun Han
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alan Ashworth
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, 1450 Third Street, San Francisco, CA 94158, USA; Department of Medicine, University of California, San Francisco, 1450 Third Street, San Francisco, CA 94158, USA
| | - Thomas J Kipps
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jonathan S Berek
- Stanford Comprehensive Cancer Institute and Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Garry P Nolan
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Wendy J Fantl
- Stanford Comprehensive Cancer Institute and Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, CA 94305, USA.
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72794
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Zhou J, Zhang C, Sun Y, Wang L, Zhang J, Li F, Mao W. Corilagin Attenuates Allergy and Anaphylactic Reaction by Inhibiting Degranulation of Mast Cells. Med Sci Monit 2018; 24:891-896. [PMID: 29434182 PMCID: PMC5819305 DOI: 10.12659/msm.906098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background This study evaluated the anti-allergic activity of corilagin and also postulates the possible mechanism of its action. Material/Methods Corilagin was given orally at dose of 10, 20, and 40 mg/kg/day. All the animals (guinea pigs, rats, and mice) were sensitized for allergy such as eosinophilia and leukocytosis induced by milk; degranulation of mast cell by compound 48/80; and passive and active anaphylaxis. Moreover, the antagonistic effect was determined by estimating the effect of corilagin on contraction of guinea pig tracheal chain and ileum induced by Ach and histamine, respectively. Result There was a significant decrease in the leukocyte and eosinophil counts in the corilagin-treated group compared to the negative control group. Treatment with corilagin significantly protects the degranulation of mast cells, and it also has significant anti-muscarinic and antihistaminic activity by reducing the muscle contraction induced by Acetylcholine (Ach) and histamine in guinea pig tracheal chain and ileum. Conclusions Corilagin possess anti-anaphylactic and anti-allergic activity by inhibiting the release of mediators from mast cells and by decreasing the serum concentration of immunoglobulin E (IgE).
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Affiliation(s)
- Jie Zhou
- Department of Dermatology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
| | - Ci'an Zhang
- Department of Traditional Chinese Medicine, Shanghai Changzheng Hospital, Shanghai, China (mainland)
| | - Yuanyuan Sun
- Department of Dermatology, Suzhou Municipal Hospital of Anhui Province, Suzhou, Anhui, China (mainland)
| | - Li Wang
- Department of Dermatology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
| | - Jian Zhang
- Department of Dermatology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
| | - Fulun Li
- Department of Dermatology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
| | - Weian Mao
- Department of Dermatology, Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
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72795
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Hong L, Zhang Y, Liu Z. Neuroendocrine carcinoma of esophageal and gastric cardia: clinicopathologic and immunohistochemistry study of 80 cases. Oncotarget 2018; 9:10754-10764. [PMID: 29535841 PMCID: PMC5828227 DOI: 10.18632/oncotarget.23610] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/26/2017] [Indexed: 02/06/2023] Open
Abstract
Neuroendocrine carcinoma (NEC) of the esophagus and gastric cardia is a rare tumor, and the Chaoshan region has one of the highest incidences of esophageal and gastric cardia cancer (GCC) worldwide. The aim of this study was to characterize the clinicopathologic features of esophageal NEC (n = 67) and gastric cardia NEC (n = 13) cases identified over a 9-year period in the Chaoshan region. Esophageal NECs were either purely NEC (n = 47) or mixed with squamous cell carcinoma or adenocarcinoma (n = 20). For GCC; pure NEC was found in 5 cases, whereas 8 cases were mixed with adenocarcinomas. The majority of esophageal and gastric cardia NECs was of the small cell type, and 24/67 esophageal and 5/13 gastric cardia patients were found with lymph node metastasis. Immunohistochemistry was performed in all cases, and positive staining for synaptophysin (Syn) was found for all cases, with half the esophageal NEC cases being also chromogranin A (CgA)-positive. In the multivariate Cox regression model, lymph node and further metastasis were independent prognostic factors for esophageal NEC. Our study revealed the clinicopathological features of esophageal and gastric cardia NECs in the Chaoshan region and found mixed NECs patients may have a better prognosis than pure NECs patients, which may provide therapeutic clue for treating this rare tumor.
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Affiliation(s)
- Liangli Hong
- Department of Pathology, First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Ying Zhang
- Department of Pathology, Shantou University Medical College, Shantou, Guangdong, China
| | - Zhaoyong Liu
- Department of Orthopedics, First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China
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72796
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Inhibition of KRAS-dependent lung cancer cell growth by deltarasin: blockage of autophagy increases its cytotoxicity. Cell Death Dis 2018; 9:216. [PMID: 29440631 PMCID: PMC5833846 DOI: 10.1038/s41419-017-0065-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 10/09/2017] [Accepted: 10/12/2017] [Indexed: 12/18/2022]
Abstract
Deltarasin is a recently identified small molecule that can inhibit KRAS–PDEδ interactions by binding to a hydrophobic pocket on PDEδ, resulting in the impairment of cell growth, KRAS activity, and RAS/RAF signaling in human pancreatic ductal adenocarcinoma cell lines. Since KRAS mutations are the most common oncogene mutations in lung adenocarcinomas, implicated in over 30% of all lung cancer cases, we examined the ability of deltarasin to inhibit KRAS-dependent lung cancer cell growth. Here, for the first time, we document that deltarasin produces both apoptosis and autophagy in KRAS-dependent lung cancer cells in vitro and inhibits lung tumor growth in vivo. Deltarasin induces apoptosis by inhibiting the interaction of with PDEδ and its downstream signaling pathways, while it induces autophagy through the AMPK-mTOR signaling pathway. Importantly, the autophagy inhibitor, 3-methyl adenine (3-MA) markedly enhances deltarasin-induced apoptosis via elevation of reactive oxygen species (ROS). In contrast, inhibition of ROS by N-acetylcysteine (NAC) significantly attenuated deltarasin-induced cell death. Collectively, these observations suggest that the anti-cancer cell activity of deltarasin can be enhanced by simultaneously blocking “tumor protective” autophagy, but inhibited if combined with an anti-oxidant.
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72797
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Yu S, Zhang W, Ni W, Xiao Z, Wang X, Zhou Z, Feng Q, Chen D, Liang J, Fang D, Mao Y, Gao S, Li Y, He J. Nomogram and recursive partitioning analysis to predict overall survival in patients with stage IIB-III thoracic esophageal squamous cell carcinoma after esophagectomy. Oncotarget 2018; 7:55211-55221. [PMID: 27487146 PMCID: PMC5342412 DOI: 10.18632/oncotarget.10904] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/10/2016] [Indexed: 12/20/2022] Open
Abstract
We have developed statistical models for predicting survival in patients with stage IIB-III thoracic esophageal squamous cell carcinoma (ESCC) and assessing the efficacy of adjuvant treatment. From a retrospective review of 3,636 patients, we created a database of 1,004 patients with stage IIB-III thoracic ESCC who underwent esophagectomy with or without postoperative radiation. Using a multivariate Cox regression model, we assessed the prognostic impact of clinical and histological factors on overall survival (OS). Logistic analysis was performed to identify factors to include in a recursive partitioning analysis (RPA) to predict 5-year OS. The nomogram was evaluated internally based on the concordance index (C-index) and a calibration plot. The median survival time in the training dataset was 30.9 months, and the 5-year survival rate was 33.9%. T stage, differentiated grade, adjuvant treatment, tumor location, lymph node metastatic ratio (LNMR), and the presence of vascular carcinomatous thrombi were statistically significant predictors of 5-year OS. The C-index of the nomogram was 0.70 (95% CI 0.67-0.73). RPA resulted in a three-class stratification: class 1, LNMR ≤ 0.15 with adjuvant treatment; class 2, LNMR ≤ 0.15 without adjuvant treatment and LNMR > 0.15 with adjuvant treatment; and class 3, LNMR > 0.15 without adjuvant treatment. The three classes were statistically significant for OS (P < 0.001). Thus, the nomogram and RPA models predicted the prognosis of stage IIB-III ESCC patients and could be used in decision-making and clinical trials.
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Affiliation(s)
- Shufei Yu
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Wencheng Zhang
- Department of Radiation Oncology, Tianjing Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Tianjin 300000, China
| | - Wenjie Ni
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Zefen Xiao
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xin Wang
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Zongmei Zhou
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Qinfu Feng
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Dongfu Chen
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Jun Liang
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Dekang Fang
- Department of Thoracic Surgery, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China
| | - Yousheng Mao
- Department of Thoracic Surgery, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China
| | - Shugeng Gao
- Department of Thoracic Surgery, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China
| | - Yexiong Li
- Department of Radiation Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Jie He
- Department of Thoracic Surgery, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China
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72798
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Huang W, Luo S, Burgess R, Yi YH, Huang GF, Huang RP. New Insights into the Tumor Microenvironment Utilizing Protein Array Technology. Int J Mol Sci 2018; 19:ijms19020559. [PMID: 29438283 PMCID: PMC5855781 DOI: 10.3390/ijms19020559] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/22/2017] [Accepted: 02/06/2018] [Indexed: 12/12/2022] Open
Abstract
The tumor microenvironment (TME) is a considerably heterogeneous niche, which is created by tumor cells, the surrounding tumor stroma, blood vessels, infiltrating immune cells, and a variety of associated stromal cells. Intercellular communication within this niche is driven by soluble proteins synthesized by local tumor and stromal cells and include chemokines, growth factors, interferons, interleukins, and angiogenic factors. The interaction of tumor cells with their microenvironment is essential for tumorigenesis, tumor progression, growth, and metastasis, and resistance to drug therapy. Protein arrays enable the parallel detection of hundreds of proteins in a small amount of biological sample. Recent data have demonstrated that the application of protein arrays may yield valuable information regarding the structure and functional mechanisms of the TME. In this review, we will discuss protein array technologies and their applications in TME analysis to discern pathways involved in promoting the tumorigenic phenotype.
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Affiliation(s)
- Wei Huang
- RayBiotech, Inc., Guangzhou, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- South China Biochip Research Center, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
| | - Shuhong Luo
- RayBiotech, Inc., Guangzhou, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- South China Biochip Research Center, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- RayBiotech, Inc., 3607 Parkway Lane, Norcross, GA 30092, USA.
| | - Rob Burgess
- RayBiotech, Inc., 3607 Parkway Lane, Norcross, GA 30092, USA.
| | - Yu-Hua Yi
- RayBiotech, Inc., Guangzhou, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- South China Biochip Research Center, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
| | - Gordon F Huang
- RayBiotech, Inc., 3607 Parkway Lane, Norcross, GA 30092, USA.
| | - Ruo-Pan Huang
- RayBiotech, Inc., Guangzhou, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- South China Biochip Research Center, 79 Ruihe Road, Huangpu District, Guangzhou 510600, China.
- RayBiotech, Inc., 3607 Parkway Lane, Norcross, GA 30092, USA.
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72799
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Wang P, Wang Y, Hang B, Zou X, Mao JH. A novel gene expression-based prognostic scoring system to predict survival in gastric cancer. Oncotarget 2018; 7:55343-55351. [PMID: 27419373 PMCID: PMC5342421 DOI: 10.18632/oncotarget.10533] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 05/26/2016] [Indexed: 01/29/2023] Open
Abstract
Analysis of gene expression patterns in gastric cancer (GC) can help to identify a comprehensive panel of gene biomarkers for predicting clinical outcomes and to discover potential new therapeutic targets. Here, a multi-step bioinformatics analytic approach was developed to establish a novel prognostic scoring system for GC. We first identified 276 genes that were robustly differentially expressed between normal and GC tissues, of which, 249 were found to be significantly associated with overall survival (OS) by univariate Cox regression analysis. The biological functions of 249 genes are related to cell cycle, RNA/ncRNA process, acetylation and extracellular matrix organization. A network was generated for view of the gene expression architecture of 249 genes in 265 GCs. Finally, we applied a canonical discriminant analysis approach to identify a 53-gene signature and a prognostic scoring system was established based on a canonical discriminant function of 53 genes. The prognostic scores strongly predicted patients with GC to have either a poor or good OS. Our study raises the prospect that the practicality of GC patient prognosis can be assessed by this prognostic scoring system.
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Affiliation(s)
- Pin Wang
- Department of Gastroenterology, Drum Tower Clinical Medical School Of Nanjing Medical University, Nanjing, Jiangsu 210008, China
| | - Yunshan Wang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,International Biotechnology R&D Center, Shandong University School of Ocean, Weihai, Shandong 264209, China
| | - Bo Hang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Xiaoping Zou
- Department of Gastroenterology, Drum Tower Clinical Medical School Of Nanjing Medical University, Nanjing, Jiangsu 210008, China
| | - Jian-Hua Mao
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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72800
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Church MK, Kolkhir P, Metz M, Maurer M. The role and relevance of mast cells in urticaria. Immunol Rev 2018; 282:232-247. [DOI: 10.1111/imr.12632] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Martin K. Church
- Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - Pavel Kolkhir
- Department of Dermatology and Venereology; Sechenov First Moscow State Medical University; Moscow Russian Federation
| | - Martin Metz
- Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
| | - Marcus Maurer
- Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
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