101
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Lei Y, Zhu X, Zheng D, Li S, Ma R, Zhang M, Fan Q, Wang X, Verma V, Tang X, Zhou S. MO-FG-BRA-02: A Feasibility Study of Integrating Breathing Audio Signal with Surface Surrogates for Respiratory Motion Management. Med Phys 2016. [DOI: 10.1118/1.4957285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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102
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Ma R, Zhu X, Li S, Zheng D, Lei Y, Wang S, Verma V, Bennion N, Wahl A, Zhou S. WE-DE-201-02: A Statistical Analysis Tool for Plan Quality Verification in HDR Brachytherapy Forward Planning for Cervix Cancer. Med Phys 2016. [DOI: 10.1118/1.4957807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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103
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Zhou S, Wu Q, Fan Q, Lei Y, Li S, Li X, Ma R, Wang S, Wang X, Zheng D, Zhu X, Enke C. SU-G-TeP2-14: Universal Function Form for Photon Open Field In-Water Output Ratio. Med Phys 2016. [DOI: 10.1118/1.4957049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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104
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Wang S, Zheng D, Ma R, Lin C, Zhu X, Lei Y, Enke C, Zhou S. SU-C-BRB-02: Automatic Planning as a Potential Strategy for Dose Escalation for Pancreas SBRT? Med Phys 2016. [DOI: 10.1118/1.4955556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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105
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Liang X, Zheng D, Zhang X, Narayanasamy G, Morrill S, Penagaricano J, Paudel N, Li Z. SU-F-T-14: Dosimetric Impacts of Various Uncertainties in Cervical Cancer HDR Brachytherapy: Are Conventional Point Doses Good Surrogates for 3D Dosimetry? Med Phys 2016. [DOI: 10.1118/1.4956148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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106
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Zhu X, Li S, Zheng D, Wang S, Lei Y, Zhang M, Ma R, Fan Q, Wang X, Li X, Verma V, Enke C, Zhou S. SU-G-BRB-04: Automated Output Factor Measurements Using Continuous Data Logging for Linac Commissioning. Med Phys 2016. [DOI: 10.1118/1.4956911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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107
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Ma L, Song Y, Li C, Wang E, Zheng D, Qu F, Zhou J. Bone turnover alterations across the menopausal transition in south-eastern Chinese women [corrected]. Climacteric 2016; 19:400-5. [PMID: 27147201 DOI: 10.1080/13697137.2016.1180677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES To explore the serum levels of bone resorption marker C-terminal telopeptide of type I collagen (CTX) and bone formation marker N-amino terminal propeptide of type I collagen (PINP) in Chinese women across the menopausal transition and the correlation between follicle stimulating hormone (FSH), luteinizing hormone (LH) and estradiol with the bone turnover markers. METHODS A cross-sectional study was conducted on 464 healthy Chinese women, separated into pre-, peri- and postmenopausal groups based on their menstruation changes. The serum levels of CTX, PINP, FSH, LH, and estradiol were measured. RESULTS The serum levels of CTX and PINP were significantly higher in women in the peri- and postmenopausal groups. The serum levels of FSH were significantly correlated with the serum levels of PINP in premenopausal women. Both serum FSH and LH were positively correlated with serum CTX in perimenopausal women and postmenopausal women. Estradiol was inversely correlated with CTX in the perimenopausal group. Multiple linear regression models show the serum FSH levels were independently related to the bone turnover markers CTX and PINP. CONCLUSIONS The elevated serum levels of FSH were independent risk factors for bone loss in peri- and postmenopausal women, and measurement of the serum FSH levels in mid-age women with irregular menses could be used in early diagnosis of postmenopausal osteoporosis.
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Affiliation(s)
- L Ma
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - Y Song
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - C Li
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - E Wang
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - D Zheng
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - F Qu
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
| | - J Zhou
- a Women's Hospital, School of Medicine, Zhejiang University , Hangzhou , Zhejiang and Key Laboratory of Reproductive Genetics (Zhejiang University) , Ministry of Education , Hangzhou , People's Republic of China
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108
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Hao Z, Liu Y, Liao H, Zheng D, Xiao C, Li G. Atorvastatin Plus Metformin Confer Additive Benefits on Subjects with Dyslipidemia and Overweight/Obese via Reducing ROCK2 Concentration. Exp Clin Endocrinol Diabetes 2016; 124:246-50. [PMID: 27123784 DOI: 10.1055/s-0035-1569364] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Z. Hao
- The Third People’s Hospital of Huizhou, Huizhou, Guangdong Province, China
| | - Y. Liu
- The Third People’s Hospital of Huizhou, Huizhou, Guangdong Province, China
| | - H. Liao
- The Third People’s Hospital of Huizhou, Huizhou, Guangdong Province, China
| | - D. Zheng
- The Eastern Hospital of the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - C. Xiao
- The Third People’s Hospital of Huizhou, Huizhou, Guangdong Province, China
| | - G. Li
- The Third People’s Hospital of Huizhou, Huizhou, Guangdong Province, China
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109
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Cross NCP, White HE, Ernst T, Welden L, Dietz C, Saglio G, Mahon FX, Wong CC, Zheng D, Wong S, Wang SS, Akiki S, Albano F, Andrikovics H, Anwar J, Balatzenko G, Bendit I, Beveridge J, Boeckx N, Cerveira N, Cheng SM, Colomer D, Czurda S, Daraio F, Dulucq S, Eggen L, El Housni H, Gerrard G, Gniot M, Izzo B, Jacquin D, Janssen JJWM, Jeromin S, Jurcek T, Kim DW, Machova-Polakova K, Martinez-Lopez J, McBean M, Mesanovic S, Mitterbauer-Hohendanner G, Mobtaker H, Mozziconacci MJ, Pajič T, Pallisgaard N, Panagiotidis P, Press RD, Qin YZ, Radich J, Sacha T, Touloumenidou T, Waits P, Wilkinson E, Zadro R, Müller MC, Hochhaus A, Branford S. Development and evaluation of a secondary reference panel for BCR-ABL1 quantification on the International Scale. Leukemia 2016; 30:1844-52. [PMID: 27109508 PMCID: PMC5240017 DOI: 10.1038/leu.2016.90] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 04/11/2016] [Indexed: 12/24/2022]
Abstract
Molecular monitoring of chronic myeloid leukemia patients using robust BCR-ABL1 tests standardized to the International Scale (IS) is key to proper disease management, especially when treatment cessation is considered. Most laboratories currently use a time-consuming sample exchange process with reference laboratories for IS calibration. A World Health Organization (WHO) BCR-ABL1 reference panel was developed (MR1–MR4), but access to the material is limited. In this study, we describe the development of the first cell-based secondary reference panel that is traceable to and faithfully replicates the WHO panel, with an additional MR4.5 level. The secondary panel was calibrated to IS using digital PCR with ABL1, BCR and GUSB as reference genes and evaluated by 44 laboratories worldwide. Interestingly, we found that >40% of BCR-ABL1 assays showed signs of inadequate optimization such as poor linearity and suboptimal PCR efficiency. Nonetheless, when optimized sample inputs were used, >60% demonstrated satisfactory IS accuracy, precision and/or MR4.5 sensitivity, and 58% obtained IS conversion factors from the secondary reference concordant with their current values. Correlation analysis indicated no significant alterations in %BCR-ABL1 results caused by different assay configurations. More assays achieved good precision and/or sensitivity than IS accuracy, indicating the need for better IS calibration mechanisms.
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Affiliation(s)
- N C P Cross
- Wessex Regional Genetics Laboratory, Salisbury NHS Foundation Trust, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - H E White
- Wessex Regional Genetics Laboratory, Salisbury NHS Foundation Trust, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - T Ernst
- Department of Hematology/Oncology, Universitätsklinikum Jena, Jena, Germany
| | - L Welden
- Department of Genetics and Molecular Pathology, Centre for Cancer Biology, SA Pathology, Adelaide, SA, Australia
| | - C Dietz
- III. Medizinische Klinik, Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim, Germany
| | - G Saglio
- Department of Clinical and Biological Sciences, San Luigi Hospital, University of Turin, Orbassano, Italy
| | - F-X Mahon
- Bergonie Institute Cancer Center Bordeaux, INSERM U1218, University of Bordeaux, Bordeaux, France
| | - C C Wong
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - D Zheng
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S Wong
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S-S Wang
- Novartis Pharmaceuticals Corporation, East Hanover, NJ, USA
| | - S Akiki
- West Midlands Regional Genetics Laboratory, Birmingham, UK
| | - F Albano
- Department of Hematology, University of Bari, Bari, Italy
| | - H Andrikovics
- Laboratory of Molecular Diagnostics, Hungarian National Blood Transfusion Service, Budapest, Hungary.,Department of Pathophysiology, Semmelweis University, Budapest, Hungary
| | - J Anwar
- King's College Hospital London, London, UK
| | - G Balatzenko
- National Specialized Hospital for Active Treatment of Hematological Diseases, Sofia, Bulgaria
| | - I Bendit
- Laboratorio de Biologia Tumoral, Disciplina de Hematologia do HC-FMUSP, São Paulo, Brazil
| | - J Beveridge
- PathWest Laboratory Medicine WA, Department of Haematology, Fiona Stanley Hospital, Perth, WA, Australia
| | - N Boeckx
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Oncology, KUL, Leuven, Belgium
| | - N Cerveira
- Department of Genetics, Portuguese Oncology Institute, Porto, Portugal
| | - S-M Cheng
- Department of Hematology and Oncology, Quest Diagnostics Nichols Institute, San Juan Capistrano, CA, USA
| | - D Colomer
- Hematopathology Unit, Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - S Czurda
- Division of Molecular Microbiology, Children's Cancer Research Institute, Vienna, Austria
| | - F Daraio
- Department of Clinical and Biological Sciences, San Luigi Hospital, University of Turin, Orbassano, Italy
| | - S Dulucq
- Laboratoire Hematologie, Centre Hospitalier Universitaire de Bordeaux, Universite Bordeaux, Bordeaux, France
| | - L Eggen
- Laboratory of Molecular Pathology, Oslo University Hospital, Oslo, Norway
| | - H El Housni
- Clinique de Genetique Oncologique-Service de genetique, Hopital Erasme, Brussels, Belgium
| | - G Gerrard
- Imperial Molecular Pathology, Hammersmith Hospital, London, UK
| | - M Gniot
- Department of Hematology and Bone Marrow Transplantation, Poznan University of Medical Sciences, Poznan, Poland
| | - B Izzo
- Department of Clinical Medicine and Surgery, University 'Federico II' of Naples, Naples, Italy.,CEINGE - Biotecnologie Avanzate, Naples, Italy
| | | | - J J W M Janssen
- Department of Hematology and Molecular Diagnostics, VU University Medical Center, Amsterdam, The Netherlands
| | - S Jeromin
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - T Jurcek
- Center of Molecular Biology and Gene Therapy, Department of Internal Medicine-Hematology and Oncology, Masaryk University and University Hospital Brno, Brno, Czech Republic
| | - D-W Kim
- Seoul St Mary's Hospital, Leukemia Research Institute, The Catholic University of Korea, Seoul, Korea
| | - K Machova-Polakova
- Department of Molecular Genetics, Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - J Martinez-Lopez
- Department of Hematology, Hospital Universitario 12 de Octubre, Universidad Complutense, CNIO, Madrid, Spain
| | - M McBean
- Division of Cancer Medicine, Department of Pathology, Peter MacCallum Cancer Centre, East Melbourne, VIC, Australia
| | - S Mesanovic
- Pathology Department, University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - G Mitterbauer-Hohendanner
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | | | - M-J Mozziconacci
- Departement de Biopathologie, Institut Paoli-Calmettes, Marseille, France
| | - T Pajič
- Specialized Haematology Laboratory, Department of Haematology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - N Pallisgaard
- Department of Surgical Pathology, Zealand University Hospital, Roskilde, Denmark
| | - P Panagiotidis
- Hematology Unit, First Department of Internal Medicine, Laiko Hospital, University of Athens, Athens, Greece
| | - R D Press
- Department of Pathology and Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
| | - Y-Z Qin
- Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - J Radich
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - T Sacha
- Chair and Department of Hematology, Jagiellonian University, Kraków, Poland
| | - T Touloumenidou
- Laboratory of Molecular Biology, Hematology Department and HCT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | - P Waits
- Bristol Genetics Laboratory, Bristol, UK
| | | | - R Zadro
- Faculty of Pharmacy and Biochemistry and University Hospital Center Zagreb, University of Zagreb, Zagreb, Croatia
| | - M C Müller
- III. Medizinische Klinik, Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim, Germany
| | - A Hochhaus
- Department of Hematology/Oncology, Universitätsklinikum Jena, Jena, Germany
| | - S Branford
- Department of Genetics and Molecular Pathology, Centre for Cancer Biology, SA Pathology, Adelaide, SA, Australia.,School of Pharmacy and Medical Science, University of South Australia, Adelaide, SA, Australia.,School of Medicine, University of Adelaide, SA, Adelaide, Australia.,School of Molecular and Biomedical Science, University of Adelaide, Adelaide, SA, Australia
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110
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Zhang S, Bai C, Ma Y, Li X, Gao Y, Fan Y, Guan W, Zheng D. The characterisation and functional β-cell differentiation of duck pancreas-derived mesenchymal cells. Br Poult Sci 2016; 57:201-10. [DOI: 10.1080/00071668.2015.1135505] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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111
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Zhang Y, Guo X, Wang M, Wang L, Tian Q, Zheng D, Shi D. Reduced Field-of-View Diffusion Tensor Imaging of the Optic Nerve in Retinitis Pigmentosa at 3T. AJNR Am J Neuroradiol 2016; 37:1510-5. [PMID: 27056427 DOI: 10.3174/ajnr.a4767] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 02/06/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Diffusion tensor imaging may reflect pathology of the optic nerve; however, the ability of DTI to evaluate alterations of the optic nerve in retinitis pigmentosa has not yet been assessed, to our knowledge. The aim of this study was to investigate the diagnostic potential of reduced FOV-DTI in optic neuropathy of retinitis pigmentosa at 3T. MATERIALS AND METHODS Thirty-eight patients and thirty-five healthy controls were enrolled in this study. Measures of visual field and visual acuity of both eyes in all subjects were performed. A reduced FOV-DTI sequence was used to derive fractional anisotropy, apparent diffusion coefficient, principal eigenvalue, and orthogonal eigenvalue of the individual optic nerves. Mean fractional anisotropy, ADC, and eigenvalue maps were obtained for quantitative analysis. Further analyses were performed to determine the correlation of fractional anisotropy, ADC, principal eigenvalue, and orthogonal eigenvalue with optic nerves in patients with mean deviation of the visual field and visual acuity, respectively. RESULTS The optic nerves of patients with retinitis pigmentosa compared with control subjects showed significantly higher ADC, principal eigenvalue, and orthogonal eigenvalue and significantly lower fractional anisotropy (P < .01). For patients with retinitis pigmentosa, the mean deviation of the visual field of the optic nerve was significantly correlated with mean fractional anisotropy (r = 0.364, P = .001) and orthogonal eigenvalue (r = -0.254, P = .029), but it was not correlated with mean ADC (P = .154) and principal eigenvalue (P = .337). Moreover, no correlation between any DTI parameter and visual acuity in patients with retinitis pigmentosa was observed (P > .05). CONCLUSIONS Reduced FOV-DTI measurement of the optic nerve may serve as a biomarker of axonal and myelin damage in optic neuropathy for patients with retinitis pigmentosa.
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Affiliation(s)
- Y Zhang
- From the Departments of Radiology (Y.Z., M.W., L.W., Q.T., D.S.)
| | - X Guo
- Ophthalmology (X.G.), Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, China
| | - M Wang
- From the Departments of Radiology (Y.Z., M.W., L.W., Q.T., D.S.)
| | - L Wang
- From the Departments of Radiology (Y.Z., M.W., L.W., Q.T., D.S.)
| | - Q Tian
- From the Departments of Radiology (Y.Z., M.W., L.W., Q.T., D.S.)
| | - D Zheng
- GE Healthcare (D.Z.), Beijing, China
| | - D Shi
- From the Departments of Radiology (Y.Z., M.W., L.W., Q.T., D.S.)
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112
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Xu H, Ma J, Wu J, Chen L, Sun F, Qu C, Zheng D, Xu S. Gene expression profiling analysis of lung adenocarcinoma. Braz J Med Biol Res 2016; 49:S0100-879X2016000300601. [PMID: 26840709 PMCID: PMC4763816 DOI: 10.1590/1414-431x20154861] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 08/05/2015] [Indexed: 02/03/2023] Open
Abstract
The present study screened potential genes related to lung adenocarcinoma, with the
aim of further understanding disease pathogenesis. The GSE2514 dataset including 20
lung adenocarcinoma and 19 adjacent normal tissue samples from 10 patients with lung
adenocarcinoma aged 45-73 years was downloaded from Gene Expression Omnibus.
Differentially expressed genes (DEGs) between the two groups were screened using the
t-test. Potential gene functions were predicted using functional
and pathway enrichment analysis, and protein-protein interaction (PPI) networks
obtained from the STRING database were constructed with Cytoscape. Module analysis of
PPI networks was performed through MCODE in Cytoscape. In total, 535 upregulated and
465 downregulated DEGs were identified. These included ATP5D,
UQCRC2, UQCR11 and genes encoding nicotinamide
adenine dinucleotide (NADH), which are mainly associated with mitochondrial ATP
synthesis coupled electron transport, and which were enriched in the oxidative
phosphorylation pathway. Other DEGs were associated with DNA replication
(PRIM1, MCM3, and RNASEH2A),
cell surface receptor-linked signal transduction and the enzyme-linked receptor
protein signaling pathway (MAPK1, STAT3,
RAF1, and JAK1), and regulation of the
cytoskeleton and phosphatidylinositol signaling system (PIP5K1B,
PIP5K1C, and PIP4K2B). Our findings suggest that
DEGs encoding subunits of NADH, PRIM1, MCM3, MAPK1, STAT3, RAF1, and JAK1 might be
associated with the development of lung adenocarcinoma.
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Affiliation(s)
- H Xu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - J Ma
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - J Wu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - L Chen
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - F Sun
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - C Qu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - D Zheng
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
| | - S Xu
- Department of Thoracic Surgery, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang, China
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113
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Liang X, Penagaricano J, Zheng D, Morrill S, Zhang X, Corry P, Griffin RJ, Han EY, Hardee M, Ratanatharathom V. Radiobiological impact of dose calculation algorithms on biologically optimized IMRT lung stereotactic body radiation therapy plans. Radiat Oncol 2016; 11:10. [PMID: 26800883 PMCID: PMC4724090 DOI: 10.1186/s13014-015-0578-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 12/22/2015] [Indexed: 12/25/2022] Open
Abstract
Background The aim of this study is to evaluate the radiobiological impact of Acuros XB (AXB) vs. Anisotropic Analytic Algorithm (AAA) dose calculation algorithms in combined dose-volume and biological optimized IMRT plans of SBRT treatments for non-small-cell lung cancer (NSCLC) patients. Methods Twenty eight patients with NSCLC previously treated SBRT were re-planned using Varian Eclipse (V11) with combined dose-volume and biological optimization IMRT sliding window technique. The total dose prescribed to the PTV was 60 Gy with 12 Gy per fraction. The plans were initially optimized using AAA algorithm, and then were recomputed using AXB using the same MUs and MLC files to compare with the dose distribution of the original plans and assess the radiobiological as well as dosimetric impact of the two different dose algorithms. The Poisson Linear-Quadatric (PLQ) and Lyman-Kutcher-Burman (LKB) models were used for estimating the tumor control probability (TCP) and normal tissue complication probability (NTCP), respectively. The influence of the model parameter uncertainties on the TCP differences and the NTCP differences between AAA and AXB plans were studied by applying different sets of published model parameters. Patients were grouped into peripheral and centrally-located tumors to evaluate the impact of tumor location. Results PTV dose was lower in the re-calculated AXB plans, as compared to AAA plans. The median differences of PTV(D95%) were 1.7 Gy (range: 0.3, 6.5 Gy) and 1.0 Gy (range: 0.6, 4.4 Gy) for peripheral tumors and centrally-located tumors, respectively. The median differences of PTV(mean) were 0.4 Gy (range: 0.0, 1.9 Gy) and 0.9 Gy (range: 0.0, 4.3 Gy) for peripheral tumors and centrally-located tumors, respectively. TCP was also found lower in AXB-recalculated plans compared with the AAA plans. The median (range) of the TCP differences for 30 month local control were 1.6 % (0.3 %, 5.8 %) for peripheral tumors and 1.3 % (0.5 %, 3.4 %) for centrally located tumors. The lower TCP is associated with the lower PTV coverage in AXB-recalculated plans. No obvious trend was observed between the calculation-resulted TCP differences and tumor size or location. AAA and AXB yield very similar NTCP on lung pneumonitis according to the LKB model estimation in the present study. Conclusion AAA apparently overestimates the PTV dose; the magnitude of resulting difference in calculated TCP was up to 5.8 % in our study. AAA and AXB yield very similar NTCP on lung pneumonitis based on the LKB model parameter sets we used in the present study.
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Affiliation(s)
- X Liang
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - J Penagaricano
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - D Zheng
- Department of Radiation Oncology, University of Nebraska Medical Center, 42nd and Emile, Omaha, NE, USA.
| | - S Morrill
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - X Zhang
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - P Corry
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - R J Griffin
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - E Y Han
- Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - M Hardee
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
| | - V Ratanatharathom
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, 4301 W. Markham St., #771, Little Rock, AR, USA.
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Zheng D, Wang M, Wang N, Cheng M, Sun L. Effect of Bridgehead Steric Bulk on the Intramolecular C-H Heterolysis of [FeFe]-Hydrogenase Active Site Models Containing a P2N2 Pendant Amine Ligand. Inorg Chem 2016; 55:411-8. [PMID: 26230977 DOI: 10.1021/acs.inorgchem.5b00923] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of pendant amine-containing [FeFe]-hydrogenase models, [X(CH2S-μ)2{Fe(CO)3}{Fe(CO)(P2(Ph)N2(Bn))}] (1H, X = CH2; 2Me, C(CH3)2; 3Et, C(CH2CH3)2; and P2(Ph)N2(Bn) = 1,5-dibenzyl-3,7-diphenyl-1,5-diaza-3,7-diphosphacyclooctane) with different groups at the bridgehead carbon of the S-to-S linker were synthesized. The oxidations of these complexes as well as the reverse reduction reaction were studied by cyclic voltammetry and in situ IR spectroscopy. Regardless of the bridgehead steric bulk, all three complexes demonstrate intramolecular iron-mediated C(sp(3))-H bond heterolytic cleavage with the assistance of the pendant amine base within the chelating diphosphine ligand in the two-electron oxidation process. X-ray crystallographic analysis shows that the doubly oxidized products, [1'H](+), [2'Me](+), and [3'Et](+), all have a rigid FeSC three-membered ring at the open apical site of the rotated iron center. The most noticeable difference in structures of the oxidized complexes is that the single CO ligand of the rotated Fe(P2(Ph)N2(Bn))(CO) unit in [1'H](+) and [2'Me](+) is found below the Fe···Fe vector, while in [3'Et](+) an unusually rotated Fe(P2(Ph)N2(Bn))(CO) moiety positions one of the P donors within the bidentate ligand under the Fe···Fe vector. The starting Fe(I)Fe(I) complexes can be recovered from their corresponding doubly oxidized complexes by reduction in the presence of Brönsted acid.
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Affiliation(s)
- Dehua Zheng
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT) , Dalian 116024, China
| | - Mei Wang
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT) , Dalian 116024, China
| | - Ning Wang
- School of Chemistry and Chemical Engineering, Henan University of Technology , Zhengzhou 450001, China
| | - Minglun Cheng
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT) , Dalian 116024, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT) , Dalian 116024, China.,Department of Chemistry, KTH Royal Institute of Technology , Stockholm 10044, Sweden
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115
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Cheng M, Wang M, Zheng D, Sun L. Effect of the S-to-S bridge on the redox properties and H2activation performance of diiron complexes related to the [FeFe]-hydrogenase active site. Dalton Trans 2016; 45:17687-17696. [DOI: 10.1039/c6dt02953a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Studies on diiron dithiolate complexes containing the same PNP ligand but different S-to-S bridges demonstrate that changing the S-to-S bridge can considerably alter the H2activation performance of [FeFe]-hydrogenase models.
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Affiliation(s)
- Minglun Cheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology
- Dalian 116024
- China
| | - Mei Wang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology
- Dalian 116024
- China
| | - Dehua Zheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology
- Dalian 116024
- China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology
- Dalian 116024
- China
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116
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Zhu X, Cai J, Lian J, Driewer J, Chang S, Li S, Verma V, Lei Y, Wang S, Zheng D, Zhang M, Zhang Q, Zhou S, Enke C. A Touchless Tool to Improve Gated Radiation Therapy: Thermal Camera Based Breathing Phase Monitoring. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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117
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Liu H, Zhou X, Zhao Y, Zheng D, Wang J, Wang X, Castellan D, Huang B, Wang Z, Soares Magalhães RJ. Factors Associated with the Emergence of Highly Pathogenic Avian Influenza A (H5N1) Poultry Outbreaks in China: Evidence from an Epidemiological Investigation in Ningxia, 2012. Transbound Emerg Dis 2015; 64:746-753. [DOI: 10.1111/tbed.12433] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/29/2022]
Affiliation(s)
- H. Liu
- China Animal Health and Epidemiology Center; Qingdao China
| | - X. Zhou
- School of Veterinary Science; the University of Queensland; Gatton Qld Australia
- FAO HPAI H5N1 Programme in China; Food and Agriculture Organization of the United Nations; Beijing China
| | - Y. Zhao
- China Animal Health and Epidemiology Center; Qingdao China
| | - D. Zheng
- China Animal Health and Epidemiology Center; Qingdao China
| | - J. Wang
- China Animal Health and Epidemiology Center; Qingdao China
| | - X. Wang
- Ningxia Animal Disease Prevention and Control Center; Yinchuan China
| | - D. Castellan
- Emergency Centre for Trans-boundary Animal Diseases (ECTAD); FAO-RAP; Bangkok Thailand
| | - B. Huang
- China Animal Health and Epidemiology Center; Qingdao China
| | - Z. Wang
- China Animal Health and Epidemiology Center; Qingdao China
| | - R. J. Soares Magalhães
- School of Veterinary Science; the University of Queensland; Gatton Qld Australia
- Child Health Research Centre; the University of Queensland; Herston Qld Australia
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118
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Bharj J, Usyaloglu M, Osborn D, Zheng D, Jamshidi Y, Conti F. Control of transcription elongation is essential for cardiac and skeletal muscle development. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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119
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Wei Y, Zheng D, Li X, Zhou W, Qian Y, Ming C, Shi B. Infusion of dendritic cells carrying donor lymphocytes treated with 8-methoxypsoralen and ultraviolet A light induces CD19+ IL-10+ regulatory B cells and promotes skin allograft survival. Transplant Proc 2015; 46:3641-6. [PMID: 25498103 DOI: 10.1016/j.transproceed.2014.09.093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 06/09/2014] [Accepted: 09/17/2014] [Indexed: 11/19/2022]
Abstract
PUVA-SP DCs are immature dendritic cells (imDCs) that have taken up donor splenic lymphocytes treated with 8-methoxypsoralen and ultraviolet A light (PUVA-SPs). Phagocytosis of donor PUVA-SPs does not stimulate phenotype maturation of recipient imDCs, and infusion of PUVA-SP DCs can induce CD4(+)CD25(high)Foxp3(+) regulatory T cells (Treg). However, the regulatory effect of PUVA-SP DCs on B cells is poorly understood. In this study, we compared PUVA-SP DCs with imDCs in terms of lipopolysaccharide (LPS) responsiveness and flow cytometric analysis of interleukin (IL) 10 expression in splenic CD19(+)B cells. Our results demonstrate that PUVA-SP DCs can suppress subsequent LPS-induced DC maturation and that infusion of PUVA-SP DCs, in the absence of an immunosuppressant, significantly promotes skin allograft survival. This effect was associated with up-regulation of circulating regulatory B cells exhibiting preferential IL-10 secretion. Our results suggest that effective treatments involving infusion of PUVA-SP DCs is likely related to the modulation not only of T-cell and Treg functions but also of B-cell and regulatory B-cell (Breg) functions.
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Affiliation(s)
- Y Wei
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - D Zheng
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - X Li
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - W Zhou
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - Y Qian
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - C Ming
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China
| | - B Shi
- Organ Transplantation Institute, 309th Hospital of the Chinese People's Liberation Army, Beijing, People's Republic of China.
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120
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Kong F, Zheng D, She P, Ni P, Zhu H, Xu H, Su Z. Porphyromonas gingivalis B cell Antigen Epitope Vaccine, pIRES-ragB'-mGITRL, Promoted RagB-Specific Antibody Production and Tfh Cells Expansion. Scand J Immunol 2015; 81:476-82. [PMID: 25689343 DOI: 10.1111/sji.12281] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 01/27/2015] [Indexed: 11/30/2022]
Abstract
The outer membrane protein RagB is one of the major virulence factors of Porphyromonas gingivalis (P. gingivalis). To prevent periodontitis and associated systemic diseases induced by P. gingivalis, we built B cell antigen epitope vaccine characterized by pIRES-ragB'-mGITRL to induce a protective immune responses. The B cell antigen epitope and scrambled peptide of ragB were predicted, cloned into pIRES and constructed pIRES-ragB', pIRES-scrambled epitopes and pIRES-ragB'-mGITRL. pIRES-ragB'-mGITRL was transfected into COS-7 cells. Subsequently, the 6-week-old female BALB/c mice were challenged by P. gingivalis following three time immunization by pIRES, pIRES-ragB', pIRES-scrambled epitopes and pIRES-ragB'-mGITRL. The levels of RagB-specific antibody in the serum and Tfh cells in the spleen were measured by ELISA and flow cytometry, respectively. And higher levels of RagB-specific IgG were produced in the immunized mice with pIRES-ragB'-mGITRL. Additionally, the number of Tfh cells was also expanded and lesions were diminished in pIRES-ragB'-mGITRL mice comparing with control groups. Our results clearly demonstrated that P. gingivalis B cell antigen epitope vaccine, pIRES-ragB'-mGITRL, could induce protective immune responses. Furthermore, our data also indicated that pIRES-ragB'-mGITRL was a potential therapeutic vaccine against P. gingivalis.
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Affiliation(s)
- F Kong
- Department of Stomatology, the Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - D Zheng
- Department of Stomatology, the Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - P She
- Department of Stomatology, the Affiliated People's Hospital of Jiangsu University, Zhenjiang, China
| | - P Ni
- Department of Immunology & Laboratory Immunology, Jiangsu University, Zhenjiang, China
| | - H Zhu
- Department of Immunology & Laboratory Immunology, Jiangsu University, Zhenjiang, China
| | - H Xu
- Department of Immunology & Laboratory Immunology, Jiangsu University, Zhenjiang, China
| | - Z Su
- Department of Immunology & Laboratory Immunology, Jiangsu University, Zhenjiang, China
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121
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Ambadapadi S, Zheng D, Munaswamy-Ramanujam G, Lucas A. Serine protease inhibitor (serpin) reactive center loop peptides as therapy for inflammatory vasculitis, hemorrhage and acute viral sepsis. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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122
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Zheng D, Ambadapadi S, Chen H, Wakefield D, Clapp W, Lucas A. Inhibition of chemokine:glycosaminoglycan (GAG) (glycocalyx) interaction in the donor kidney significantly reduces transplant rejection and vascular inflammation. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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123
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Zhou S, Zhu X, Zhang M, Zheng D, Zhang Q, Lei Y, Li S, Driewer J, Wang S, Enke C. SU-E-T-56: A Novel Approach to Computing Expected Value and Variance of Point Dose From Non-Gated Radiotherapy Delivery. Med Phys 2015. [DOI: 10.1118/1.4924417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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124
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Zhou S, Zhu X, Zhang M, Zheng D, Lei Y, Zhang Q, Li S, Driewer J, Wang S, Enke C. SU-E-T-508: Internal Organ Motion Effect On Radiation Dose to a Point Under Half-Beam Block Match Line. Med Phys 2015. [DOI: 10.1118/1.4924870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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125
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Zheng D, Zhen W, Lei Y, Denniston K, Driewer J, Zhang Q, Zhu X, Wang S, Zhou S. SU-E-J-180: Imaging-Based ITV May Provide Insufficient Internal Margin for Lung SBRT Patients with Tumor Misalignments Between 3D and 4D Planning CTs. Med Phys 2015. [DOI: 10.1118/1.4924265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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126
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Zhang Q, Lei Y, Zheng D, Zhu X, Wahl A, Lin C, Zhou S, Zhen W. SU-E-T-573: Normal Tissue Dose Effect of Prescription Isodose Level Selection in Lung Stereotactic Body Radiation Therapy. Med Phys 2015. [DOI: 10.1118/1.4924935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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127
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Driewer J, Burchell M, Fowler Z, Lei Y, Morgan B, Zheng D, Zhou S. MO-DE-BRA-01: Enhancing Radiation Physics Instruction Through Gamification and E-Learning. Med Phys 2015. [DOI: 10.1118/1.4925336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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128
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Lei Y, Zheng D, Wang S, Zhu X, Zhang Q, Li S, Driewer J, Zhou S. SU-E-T-440: Gain Calibration Stability Study of a MV Flat-Panel-Detector (FPD) On Siemens ARTISTE Linac. Med Phys 2015. [DOI: 10.1118/1.4924801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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129
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Fu X, Wei Y, Zheng D, Zhou L, Zhu Z, Song J, Feng L, Du G. [Triplet anti-tumor therapy based on thymosin α-1 attenuates incidence of hepatoma and serum alpha-fetoprotein level in rat hepatoma model]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2015; 31:744-748. [PMID: 26062414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To explore the impact of triple anti-tumor therapy based on thymosin α1 (Tα1) combined with Huaier granule(HG) and sirolimus on the level of serum alpha-fetoprotein (AFP) in rat models of liver cancer. METHODS Ninety Sprague-Dawley rats were randomly divided into triple anti-tumor therapy group, Tα1 group, HG group, sirolimus group, positive control and blank control groups, with 15 rats in each group. Except the blank control group, the rats in the other groups were induced using diethylnitrosamine (DEN) to establish liver cancer models. After DEN treatment, the triple therapy group underwent 0.8 mg/kg Tα1 subcutaneous injection (from once a day for two weeks to twice a week since the third week), 0.35 g/kg HG gavage (three times a day) and 1 mg/kg sirolimus gavage (once a day). The dose of the rest single drug groups were the same with that of the triple therapy group. The positive control and blank control groups were not treated with the drugs. The treatment lasted 20 weeks. Then, the behavior of the rats were observed at the different time points, and the level of serum AFP in the rats were detected at 6, 16, 18, 20 weeks, respectively. RESULTS The typical symptoms of liver cancer were seen in the DEN-induced rats at 16 weeks. Since the tenth week, 6 rats died one after another. Pathological section of rat liver tissue suggested that the rat models were established successfully. According to the incidence rate of liver cancer and the survival rate at 20 weeks, the triple anti-tumor therapy was significantly superior to the single drug treatments. In addition, the triple anti-tumor therapy significantly reduced the level of serum AFP in the rats. CONCLUSION The triple anti-tumor therapy can significantly prolong the survival time of rats with liver cancer, decrease the cancer incidence rate and the level of serum AFP.
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Affiliation(s)
- Xiaoqian Fu
- Department of Graduate, Hebei North University, Zhangjiakou 075000; Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Yuxiang Wei
- Laboratory, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Dehua Zheng
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Lin Zhou
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Zhidong Zhu
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Jiyong Song
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Likui Feng
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
| | - Guosheng Du
- Department of Hepatobiliary Surgery, Organ Transplant Center, Chinese PLA 309 Hospital, Beijing 100091, China
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130
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Zhu X, Driewer J, Lei Y, Zheng D, Li S, Cullip T, Chang S, Zhang Q, Zhang M, Zhou S. SU-E-T-419: Fabricating Cerrobend Grids with 3D Printing for Spatially Modulated Radiation Therapy: A Feasibility Study. Med Phys 2015. [DOI: 10.1118/1.4924780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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131
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Zhang Q, Driewer J, Wang S, Li S, Zheng D, Zhu X, Zhen W, Wahl A, Lin C, Thompson R, Zhou S, Enke C. SU-E-J-46: Evaluation of the Accuracy of a Six Degree of Freedom Robotic Couch Using ConeBeam CT Images of the Isocal Phantom. Med Phys 2015. [DOI: 10.1118/1.4924133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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132
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Wang S, Driewer J, Zheng D, Lei Y, Zhang Q, Zhu X, Li S, Enke C, Xu B, Zhou S. SU-E-T-460: Impact of the LINAC Repetition Rate On a High-Resolution Liquid Ionization Chamber Array for Patient-Specific QA. Med Phys 2015. [DOI: 10.1118/1.4924822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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133
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Luo X, Shi H, Hou L, Zhong X, Chen X, Zhang Y, Zheng D, Tan Y, Hu G, Mu N, Chen J, Fang Y, He H, Ning Y. Different cerebrospinal fluid levels of Alzheimer-type biomarker Aβ42 between general paresis and asymptomatic neurosyphilis. Eur J Neurol 2015; 22:853-8. [PMID: 25707998 DOI: 10.1111/ene.12680] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 12/22/2014] [Indexed: 12/27/2022]
Affiliation(s)
- X. Luo
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - H. Shi
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - L. Hou
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - X. Zhong
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - X. Chen
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - Y. Zhang
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - D. Zheng
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - Y. Tan
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - G. Hu
- Clinical Laboratory; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - N. Mu
- Department of Geriatrics; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - J. Chen
- Department of Geriatrics; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - Y. Fang
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - H. He
- Neuropsychiatry Research Institute; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
| | - Y. Ning
- Department of Neurology; Guangzhou Brain Hospital; Affiliated Hospital of Guangzhou Medical University; Guangzhou China
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134
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Huang B, Li J, Xu X, Zheng D, Zhou Z, Liu J. Successful treatment of renal light chain (AL) amyloidosis with bortezomib and dexamethasone (VD). ACTA ACUST UNITED AC 2014; 63:17-20. [PMID: 25455933 DOI: 10.1016/j.patbio.2014.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To assess the efficacy and tolerability of bortezomib with dexamethasone for patients with renal light chain (AL) amyloidosis. METHODS Twelve newly diagnosed patients with renal AL amyloidosis were treated with a combination of bortezomib (1.3mg/m(2)/d iv, d1, 4, 8, 11) and dexamethasone (20mg/d iv drip, d1-4). RESULTS Median follow-up time was 22.5 months (range, 2.1-53.6). Ten patients were evaluable. Five out of 10 (50%) patients achieved complete hematologic responses (CHR), and totally 8/10 (80%) achieved hematologic responses (HR). Median time to hematologic response was 1 month. All patients who received HR had no hematologic progression during follow-up period. Five patients (50%) had kidney responses and the other 5 patients (50%) were stable. Median time to kidney response was 3 months. No patients presented renal progression during follow-up. One patient achieved PR after 4 cycles of VD and then received autologous peripheral blood stem cell transplantation. Two out of 10 evaluable patients without hematologic response had died with median overall survival of 8.2 months. Eight of them who had HR were alive with median follow-up time of 28.5 months. Infection (6/12) and fatigue (5/12) were the most frequent side effects. Three patients developed herpes zoster and had to discontinue therapy. CONCLUSIONS VD produces rapid, deep and durable hematological responses and renal responses in the majority of patients with newly diagnosed renal AL. It is well tolerated. This treatment may be a good option as first-line treatment for renal AL amyloidosis patients.
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Affiliation(s)
- B Huang
- Department of Hematology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
| | - J Li
- Department of Hematology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
| | - X Xu
- Department of Hematology, Zhongshan City People Hospital, Zhongshan 528403, China.
| | - D Zheng
- Department of Hematology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
| | - Z Zhou
- Department of Hematology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
| | - J Liu
- Department of Hematology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
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135
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Zheng D, Wang N, Wang M, Ding S, Ma C, Darensbourg MY, Hall MB, Sun L. Intramolecular Iron-Mediated C–H Bond Heterolysis with an Assist of Pendant Base in a [FeFe]-Hydrogenase Model. J Am Chem Soc 2014; 136:16817-23. [DOI: 10.1021/ja5078014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Dehua Zheng
- State
Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research
Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, People’s Republic of China
| | - Ning Wang
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
- School
of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, People’s Republic of China
| | - Mei Wang
- State
Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research
Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, People’s Republic of China
| | - Shengda Ding
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| | - Chengbing Ma
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Fuzhou 350002, People’s Republic of China
| | | | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77845, United States
| | - Licheng Sun
- State
Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research
Center on Molecular Devices, Dalian University of Technology (DUT), Dalian 116024, People’s Republic of China
- Department
of Chemistry, KTH Royal Institute of Technology, Stockholm 10044, Sweden
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Zhou L, Du G, Zheng D, Liu Z, Wei Y, Chen W, Zhu Z, Song J, Fu X. [The modified extracorporeal photochemotherapy promotes apoptosis of spleen lymphocytes]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2014; 30:1099-1102. [PMID: 25270216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To explore the efficacy of the modified extracorporeal photochemotherapy (ECP) in improving the apoptotic rate of lymphocytes in vitro. METHODS The spleens which were obtained from liver transplantation donor under aseptic condition were used as experimental materials. Splenic lymphocytes (SPs) suspensions were prepared by modified and traditional ECP method, respectively. And then the isolated SPs were treated by the irradiation of 8-methoxypsoralen (8-MOP) combined with ultraviolet A (UVA) named PUVA, 8-MOP and UVA, and compared with a blank group meanwhile. The treated SPs were cultured overnight in an incubator at 37 Degrees Celsius, in a humidified atmosphere of 50 mL/L CO2 for 6-8 hours. The morphological changes of cells were observed using an inverted microscope, the apoptotic rates of SPs were detected by flow cytometry, and the difference between groups was analyzed finally. RESULTS The apoptotic rate at early stage and the total apoptotic rate of SPs prepared by the modified ECP method were respectively (95.33±3.03)% and (97.10±2.12)% after treated by PUVA, (23.39±4.55)% and (36.32±6.63)% after treated by 8-MOP, and (66.98±3.60)% and (68.65±4.35)% by UVA. Compared with control group (12.82±1.86% and 13.4±2.65%), there were statistically significant differences (P<0.01). The apoptotic rate at early stage and the total apoptotic rate of SPs prepared by the traditional ECP method were respectively (79.73±4.21)% and (82.70±4.13)%, (61.42±2.28)% and (68.91±2.18)%, (19.30±1.78)% and (28.06±1.88)%, (10.84±0.98)% and (12.77±1.22)%, and the statistical comparisons between groups also had significant difference (P<0.01). In addition, there was a significant difference in the early and total apoptosis between the modified and traditional ECP (P<0.01), but no obvious variation in the end-stage apoptosis in the two groups (P>0.05). CONCLUSION The modified ECP method can promote apoptosis of SPs in vitro conveniently, safely and efficiently, especially in the early stage. This can lay a foundation for the further study on dendritic cell immunomodulation induced by ECP method.
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Affiliation(s)
- Lin Zhou
- Department of Hepatobiliary Surgery, General Hospital of PLA, Beijing 100853; Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
| | - Guosheng Du
- Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
| | - Dehua Zheng
- Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
| | - Zhijia Liu
- Department of Urology Surgery, Institute of Organ Transplantation, No. 309th Hospital of PLA, Beijing 100091, China
| | - Yuxiang Wei
- Department of Urology Surgery, Institute of Organ Transplantation, No. 309th Hospital of PLA, Beijing 100091, China
| | - Wen Chen
- Department of Hepatobiliary Surgery, General Hospital of PLA, Beijing 100853, China
| | - Zhidong Zhu
- Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
| | - Jiyong Song
- Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
| | - Xiaoqian Fu
- Department of Hepatobiliary Surgery, 309th Hospital of PLA, Beijing 100091, China
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137
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Zhang Q, Zheng D, Lei Y, Morgan B, Driewer J, Zhang M, Li S, Zhou S, Zhen W, Thompson R, Wahl A, Lin C, Enke C. A new variable for SRS plan quality evaluation based on normal tissue sparing: the effect of prescription isodose levels. Br J Radiol 2014; 87:20140362. [PMID: 25226047 DOI: 10.1259/bjr.20140362] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE A new dosimetric variable, dose-dropping speed (DDS), was proposed and used to evaluate normal tissue sparing among stereotactic radiosurgery (SRS) plans with different prescription isodose lines. METHODS 40 plans were generated for 8 intracranial SRS cases, prescribing to isodose levels (IDLs) ranging from 50% to 90% in 10% increments. Whilst maintaining similar coverage and conformity, plans at different IDLs were evaluated in terms of normal tissue sparing using the proposed DDS. The DDS was defined as the greater decay coefficient in a double exponential decay fit of the dose drop-off outside the planning target volume (PTV), which models the steep portion of the drop-off. Provided that the prescription dose covers the whole PTV, a greater DDS indicates better normal tissue sparing. RESULTS Among all plans, the DDS was found to be the lowest for the prescription at 90% IDL and the highest for the prescription at 60% or 70%. The beam profile slope change in the penumbra and its field size dependence were explored and given as the physical basis of the findings. CONCLUSION A variable was proposed for SRS plan quality evaluation. Using this measure, prescriptions at 60% and 70% IDLs were found to provide best normal tissue sparing. ADVANCES IN KNOWLEDGE A new variable was proposed based on which normal tissue sparing was quantitatively evaluated, comparing different prescription IDLs in SRS.
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Affiliation(s)
- Q Zhang
- Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, NE, USA
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138
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Zhang Q, Zheng D, Lei Y, Driewer J, Morgan B, Zhang M, Li S, Zhou S, Zhen W, Thompson R, Wahl A, Lin C, Enke C. Dosimetric Effect of Prescription Isodose Line Selection on Normal Tissues in SRS and SRT Treatment Planning. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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139
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Gan H, Zheng D, Lei Y, Li S, Zhang Q, Zhou S, Li J, Lin C. Monte Carlo Dose Evaluation for Pancreatic Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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140
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Zheng D, Gan H, Zhen W, Lin C, Driewer J, Wahl A, Zhou S. Is PTV Still Appropriate for Prescription Specification in Monte Carlo SBRT Lung Planning? Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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141
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Zhu B, Yan K, Li L, Lin M, Zhang S, He Q, Zheng D, Yang H, Shao G. K63-linked ubiquitination of FANCG is required for its association with the Rap80-BRCA1 complex to modulate homologous recombination repair of DNA interstand crosslinks. Oncogene 2014; 34:2867-78. [PMID: 25132264 DOI: 10.1038/onc.2014.229] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 05/21/2014] [Accepted: 06/23/2014] [Indexed: 11/09/2022]
Abstract
DNA interstrand crosslinks (ICLs) are extremely deleterious lesions that are repaired by homologous recombination (HR) through coordination of Fanconi anemia (FA) proteins and breast cancer susceptibility gene 1 (BRCA1) product, but the exact role these proteins have remains unclear. Here we report that FANCG was modified by the addition of lysine63-linked polyubiquitin chains (K63Ub) in response to DNA damage. We show that FANCG K63Ub was dispensable for monoubiquitination of FANCD2, but was required for FANCG to interact with the Rap80-BRCA1 (receptor-associated protein 80-BRCA1) complex for subsequent modulation of HR repair of ICLs induced by mitomycin C. Mutation of three lysine residues within FANCG to arginine (K182, K258 and K347, 3KR) reduced FANCG K63Ub modification, as well as its interaction with the Rap80-BRCA1 complex, and therefore impeded HR repair. In addition, we demonstrated that K63Ub-modified FANCG was deubiquitinated by BRCC36 complex in vitro and in vivo. Inhibition of BRCC36 resulted in increased K63Ub modification of FANCG. Taken together, our results identify a new role of FANCG in HR repair of ICL through K63Ub-mediated interaction with the Rap80-BRCA1 complex.
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Affiliation(s)
- B Zhu
- 1] Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China [2] Institute of Systems Biology, Peking University, Beijing, China
| | - K Yan
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - L Li
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - M Lin
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - S Zhang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Q He
- Center of Medical and Health Analysis, Peking University, Beijing, China
| | - D Zheng
- School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | - H Yang
- Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - G Shao
- 1] Department of Cell Biology, School of Basic Medical Sciences, Peking University, Beijing, China [2] Institute of Systems Biology, Peking University, Beijing, China
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142
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Zheng D, Zhang Q, Zhou S. SU-E-T-486: Effect of the Normalized Prescription Isodose Line On Target Dose Deficiency in Lung SBRT Based On Monte Carlo Calculation. Med Phys 2014. [DOI: 10.1118/1.4888819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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143
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Zhang Q, Lei Y, Zheng D, Morgan B, Driewer J, Zhang M, Li S, Zhou S, Zhen W, Thompson R, Lin C, Wahl A, Enke C. SU-E-J-13: A New Variable for Plan Quality Evaluation Based On Normal Tissue Sparing. Med Phys 2014. [DOI: 10.1118/1.4888064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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144
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Nopparat J, Zhang J, Lu JP, Chen YH, Zheng D, Neufer PD, Fan JM, Hong H, Boykin C, Lu Q. δ-Catenin, a Wnt/β-catenin modulator, reveals inducible mutagenesis promoting cancer cell survival adaptation and metabolic reprogramming. Oncogene 2014; 34:1542-52. [PMID: 24727894 DOI: 10.1038/onc.2014.89] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 01/16/2014] [Accepted: 02/17/2014] [Indexed: 02/06/2023]
Abstract
Mutations of Wnt/β-catenin signaling pathway has essential roles in development and cancer. Although β-catenin and adenomatous polyposis coli (APC) gene mutations are well established and are known to drive tumorigenesis, discoveries of mutations in other components of the pathway lagged, which hinders the understanding of cancer mechanisms. Here we report that δ-catenin (gene designation: CTNND2), a primarily neural member of the β-catenin superfamily that promotes canonical Wnt/β-catenin/LEF-1-mediated transcription, displays exonic mutations in human prostate cancer and promotes cancer cell survival adaptation and metabolic reprogramming. When overexpressed in cells derived from prostate tumor xenografts, δ-catenin gene invariably gives rise to mutations, leading to sequence disruptions predicting functional alterations. Ectopic δ-catenin gene integrating into host chromosomes is locus nonselective. δ-Catenin mutations promote tumor development in mouse prostate with probasin promoter (ARR2PB)-driven, prostate-specific expression of Myc oncogene, whereas mutant cells empower survival advantage upon overgrowth and glucose deprivation. Reprogramming energy utilization accompanies the downregulation of glucose transporter-1 and poly (ADP-ribose) polymerase cleavage while preserving tumor type 2 pyruvate kinase expression. δ-Catenin mutations increase β-catenin translocation to the nucleus and hypoxia-inducible factor 1α (HIF-1α) expression. Therefore, introducing δ-catenin mutations is an important milestone in prostate cancer metabolic adaptation by modulating β-catenin and HIF-1α signaling under glucose shortage to amplify its tumor-promoting potential.
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Affiliation(s)
- J Nopparat
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - J Zhang
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - J-P Lu
- College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Y-H Chen
- 1] Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA [2] Leo Jenkins Cancer Center, The Brody School of Medicine, East Carolina University, Greenville, NC, USA [3] Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - D Zheng
- 1] Department of Kinesiology, East Carolina University, Greenville, NC, USA [2] East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA
| | - P D Neufer
- 1] Department of Kinesiology, East Carolina University, Greenville, NC, USA [2] East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, USA [3] Department of Physiology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - J M Fan
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - H Hong
- Department of Pathology and Laboratory Medicine, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - C Boykin
- Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA
| | - Q Lu
- 1] Department of Anatomy and Cell Biology, The Brody School of Medicine, East Carolina University, Greenville, NC, USA [2] Leo Jenkins Cancer Center, The Brody School of Medicine, East Carolina University, Greenville, NC, USA [3] Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
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145
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Zheng D, Zhao Y, Shen Y, Chang X, Ju S, Guo L. Orexin A-mediated stimulation of 3β-HSD expression and testosterone production through MAPK signaling pathways in primary rat Leydig cells. J Endocrinol Invest 2014; 37:285-92. [PMID: 24515297 DOI: 10.1007/s40618-013-0035-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 11/16/2013] [Indexed: 01/29/2023]
Abstract
BACKGROUND Orexin A (ORA) regulates food intake, energy metabolism, gastrointestinal and reproductive functions. AIM The purpose of this study was to demonstrate whether the expression of 3β-hydroxysteroid dehydrogenase (3β-HSD) and testosterone was stimulated by ORA and mediated through mitogen-activated protein kinases (MAPK) in rat Leydig cells. METHODS Primary Leydig cells were isolated from male rat testes, cultured, and treated with ORA under various conditions. RESULTS Orexin receptor 1 (OX (1) R) mRNA, but not orexin receptor 2 mRNA, was detected in primary Leydig cells. ORA up-regulated the expression of OX( 1) R mRNA and protein in a dose-responsive manner and increased the phosphorylation of extracellular receptor kinase 1/2 (ERK1/2) and p38 MAPK levels, but did not affect the phosphorylation of the JNK MAPK. Phosphorylation of ERK1/2 and p38 MAPKs by ORA was blocked with U0126 and SB203580 inhibitors, respectively. An OX(1)R-specific inhibitor, SB334867, also blocked the phosphorylation of ERK1/2 and p38 by ORA. Inhibitor treatment also blocked 3β-HSD expression and testosterone production. CONCLUSIONS These results demonstrate that ORA activation of OX(1)R up-regulates 3β-HSD expression and testosterone production via the ERK1/2 and p38 MAPKs signaling pathways in primary rat Leydig cells.
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146
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Bharj J, Usyaloglu M, Zheng D, Ross J, Muntoni F, Osborn D, Jamshidi Y, Conti F. P7 Control of transcription elongation is essential for cardiac and skeletal muscle development. Neuromuscul Disord 2014. [DOI: 10.1016/s0960-8966(14)70023-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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147
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Zhang J, Luo J, Ni J, Tang L, Zhang HP, Zhang L, Xu JF, Zheng D. MMP-7 is upregulated by COX-2 and promotes proliferation and invasion of lung adenocarcinoma cells. Eur J Histochem 2014; 58:2262. [PMID: 24704993 PMCID: PMC3980206 DOI: 10.4081/ejh.2014.2262] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Revised: 01/04/2014] [Accepted: 01/13/2014] [Indexed: 12/02/2022] Open
Abstract
Matrix metalloproteinases (MMPs) have been implicated in a variety of pathophysiological conditions, of which MMP-7 is expressed by tumor cells of epithelial and mesenchymal origin. However, the function of MMP-7 in human lung adenocarcinoma (LAC) is unclear. In the present study the expression of MMP-7 in LAC was examined by immunohistochemical assay using a tissue microarray procedure. A loss-of-function experiment was performed to explore the effects and molecular mechanisms of lentiviral vector-mediated MMP-7 siRNA (siMMP-7) on cell proliferation and invasive potential in LAC A549 cells, measured by MTT and Transwell assays, respectively. It was found that, the expression of MMP-7 protein in LAC was significantly increased compared with that in adjacent non-cancerous tissues (ANCT) (76.0% vs 44.0%, P<0.001), and positively correlated with lymph node metastases of the tumor (P=0.014). Furthermore, targeted inhibition of cyclooxygenase-2 (COX-2) by siRNA downregulated the expression of MMP-7 and inhibited invasion of LAC cells, and knockdown of MMP-7 suppressed tumor proliferation and invasion in LAC cells. Taken together, our findings indicate that increased expression of MMP-7 is associated with lymph node metastasis and upregulated by COX-2, and promotes the tumorigenesis of LAC, suggesting that MMP-7 may be a potential therapeutic target for the treatment of cancer.
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148
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Zheng D, Wang M, Chen L, Wang N, Sun L. Redox Reactions of [FeFe]-Hydrogenase Models Containing an Internal Amine and a Pendant Phosphine. Inorg Chem 2014; 53:1555-61. [DOI: 10.1021/ic4025519] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dehua Zheng
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT) , Linggong Road 2, Dalian 116024, China
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149
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Zhang P, Wang M, Yang Y, Zheng D, Han K, Sun L. Highly efficient molecular nickel catalysts for electrochemical hydrogen production from neutral water. Chem Commun (Camb) 2014; 50:14153-6. [DOI: 10.1039/c4cc05511j] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nickel complexes containing N5-pentadentate scaffolds display a TON of H2 evolution of up to 308 000 over 60 h electrolysis in neutral water at −1.25 V vs. SHE without considerable loss in activity.
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Affiliation(s)
- Peili Zhang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Mei Wang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Yong Yang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Dehua Zheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Kai Han
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Center on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
- Department of Chemistry
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150
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Zheng D, Wang M, Chen L, Wang N, Cheng M, Sun L. The influence of a S-to-S bridge in diiron dithiolate models on the oxidation reaction: a mimic of the Hairox state of [FeFe]-hydrogenases. Chem Commun (Camb) 2014; 50:9255-8. [DOI: 10.1039/c4cc03583f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diiron complex replicates the [FeFe]-hydrogenase Hairox state and the reversible interconversion with an FeIFeI model of the Hred state.
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Affiliation(s)
- Dehua Zheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Mei Wang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Lin Chen
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Ning Wang
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
- School of Chemistry and Chemical Engineering
| | - Minglun Cheng
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals
- DUT-KTH Joint Education and Research Centre on Molecular Devices
- Dalian University of Technology (DUT)
- Dalian 116024, China
- Department of Chemistry
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