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Jia D, Cai J, Yao F, Zhu P, Xu X, Qi Y, Wang H. Effect of Bacillus Subtilis on Immune Function of Hd11 Chicken Macrophages. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2022-1641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- D Jia
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - J Cai
- Yangzhou University, P.R.China
| | - F Yao
- Yangzhou University, P.R.China
| | - P Zhu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China; Yangzhou University, P.R.China
| | - X Xu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - Y Qi
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - H Wang
- Yangzhou University, P.R.China
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Fu Z, Yang H, Han H, Jia D, Xu L, Su G, Wang Z. Effect of whole-grain rice on pellet quality, geese performance, and economic benefits. J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100176] [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: 10/21/2022] Open
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Dai X, Li X, Guo H, Jia D, Perc M, Manshour P, Wang Z, Boccaletti S. Discontinuous Transitions and Rhythmic States in the D-Dimensional Kuramoto Model Induced by a Positive Feedback with the Global Order Parameter. Phys Rev Lett 2020; 125:194101. [PMID: 33216569 DOI: 10.1103/physrevlett.125.194101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
From fireflies to cardiac cells, synchronization governs important aspects of nature, and the Kuramoto model is the staple for research in this area. We show that generalizing the model to oscillators of dimensions higher than 2 and introducing a positive feedback mechanism between the coupling and the global order parameter leads to a rich and novel scenario: the synchronization transition is explosive at all even dimensions, whilst it is mediated by a time-dependent, rhythmic, state at all odd dimensions. Such a latter circumstance, in particular, differs from all other time-dependent states observed so far in the model. We provide the analytic description of this novel state, which is fully corroborated by numerical calculations. Our results can, therefore, help untangle secrets of observed time-dependent swarming and flocking dynamics that unfold in three dimensions, and where this novel state could thus provide a fresh perspective for as yet not understood formations.
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Affiliation(s)
- X Dai
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - X Li
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Computer Science, Northwestern Polytechnical University, Xian 710072, China
| | - H Guo
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - D Jia
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - M Perc
- Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, 2000 Maribor, Slovenia
- Complexity Science Hub Vienna, Josefstädterstraße 39, 1080 Vienna, Austria
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - P Manshour
- Physics Department, Persian Gulf University, Bushehr 75169, Iran
| | - Z Wang
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - S Boccaletti
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
- CNR-Institute of Complex Systems, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
- Moscow Institute of Physics and Technology (National Research University), 9 Institutskiy per., Dolgoprudny, Moscow Region 141701, Russian Federation
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Park JH, Jung KH, Vithayathil S, Jia D, Kaipparettu BA. Abstract P2-02-11: Combinational treatment of biguanides and fatty acid β-oxidation inhibitor in triple-negative breast cancers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-02-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Among breast cancers (BCs), the driver pathways and therapeutic targets are still poorly understood for triple negative (TN) BCs. Advances in cancer metabolism research over the last decade have enhanced our understanding on metabolic reprogramming in cancer therapy. We have previously shown that metabolic reprogramming to fatty acid β-oxidation (FAO) is a major energy pathway in metastatic TNBC. Moreover, we reported that FAO regulates c-Src, one of the frequently upregulated oncopathways in TNBC via autophosphorylation of Src at Y419. Since FAO inhibitors alone cannot effectively control the tumor progression in TNBC, suitable combination therapies with other metabolic targets are necessary. Recently increasing evidences show that anti-diabetic biguanides have attractive anticancer effect in various cancer types including BC. However, its significance as an anticancer drug is not well established due to parallel metabolic pathways that support tumor growth.
Phenformin, a biguanide derivative similar to metformin, has a greater potency than metformin. Like metformin, phenformin also inhibits mitochondrial electron transport chain (ETC) through complex I inhibition. In addition, biguanides lead to the activation of AMPK, which plays a key role in insulin signaling and energy sensing. Importantly, AMPK is an upstream regulator of FAO pathway because it can phosphorylate ACC to activate FAO. Considering the dependency of TNBC to FAO, we evaluated the therapeutic significance of the combination of biguanides(ETC inhibitors) and FAO inhibitors in TNBC progression and metastasis. We hypothesize that blocking both 'arms' of the pathway can provide more pronounced and durable responses in TNBCs. Our different in vitro and in vivo studies using TNBC cell line and PDX models suggest that the combination of both inhibitors can provide better therapeutic significance in metastatic TNBCs. This is a rationale and cost-effective metabolic approach to manage the currently non-targetable metastatic TNBCs. Further investigation into the clinical effectiveness of this combination may provide better treatment opportunities for TNBC patients.
Citation Format: Park JH, Jung KH, Vithayathil S, Jia D, Kaipparettu BA. Combinational treatment of biguanides and fatty acid β-oxidation inhibitor in triple-negative breast cancers [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-02-11.
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Affiliation(s)
- JH Park
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - KH Jung
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - S Vithayathil
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - D Jia
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - BA Kaipparettu
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
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Jung KH, Park JH, Sirupangi T, Jia D, Gandhi N, Pudakalakatti S, Elswood J, Porter W, Putluri N, Zhang XHF, Chen X, Bhattacharya PK, Creighton CJ, Lewis MT, Rosen JM, Wong LJC, Das GM, Osborne CK, Rimawi MF, Kaipparettu BA. Abstract P2-02-14: Metabolic regulation and drug resistance in c-Src activated triple negative breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-02-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
c-Src (Src) is a proto-oncogene involved in signaling that culminates in the control of multiple biological functions. Src is also one of the most frequently upregulated pathways in triple negative breast cancer (TNBC). Dysregulation of Src has been detected in TNBC and is strongly associated with tumor metastasis and poor prognosis. However, even after promising preclinical studies, Src inhibitors did not show major clinical advantage in unselected TNBC populations. We have previously published that metastatic TNBC has high energy-dependency to mitochondrial fatty acid beta-oxidation (FAO) and FAO activates Src by inducing autophosphorylation at Y419. However, our recent analysis suggests that as observed with the Src inhibitors, TNBC tumors treated with FAO inhibitors also develop drug-resistance and continue tumor growth. Evaluation of their drug resistance mechanism revealed that while short-term inhibition of FAO or Src induces autophagic and apoptotic cell deaths, long-term inhibition results in autophagy-mediated drug resistance and survival. Further analyses suggest that FAO and Src inhibitors activate mitogen-activated protein (MAP) kinase kinase (MEK)/extracellular signal-regulated kinase (ERK) pathway via the induction of cellular reactive oxygen species (ROS) in TNBC. Activated MEK/ERK then induces survival pathways for drug resistance and tumor survival. Validation of in vitro findings using in vivo TNBC models confirmed that combination of FAO/Src inhibitors with MEK/ERK inhibitors can provide significant benefit to overcome the therapeutic resistance of TNBC. These findings open-up new therapeutic opportunities to manage TNBC patients with currently non-targetable metastatic tumors.
Citation Format: Jung KH, Park JH, Sirupangi T, Jia D, Gandhi N, Pudakalakatti S, Elswood J, Porter W, Putluri N, Zhang XH-F, Chen X, Bhattacharya PK, Creighton CJ, Lewis MT, Rosen JM, Wong L-JC, Das GM, Osborne CK, Rimawi MF, Kaipparettu BA. Metabolic regulation and drug resistance in c-Src activated triple negative breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-02-14.
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Affiliation(s)
- KH Jung
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - JH Park
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - T Sirupangi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - D Jia
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - N Gandhi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - S Pudakalakatti
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - J Elswood
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - W Porter
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - N Putluri
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - XH-F Zhang
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - X Chen
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - PK Bhattacharya
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - CJ Creighton
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - MT Lewis
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - JM Rosen
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - L-JC Wong
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - GM Das
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - CK Osborne
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - MF Rimawi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - BA Kaipparettu
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
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Liang B, Keshishian V, Liu S, Yi E, Jia D, Zhou Y, Kieffer J, Ye B, Laine R. Processing liquid-feed flame spray pyrolysis synthesized Mg 0.5 Ce 0.2 Zr 1.8 (PO 4 ) 3 nanopowders to free standing thin films and pellets as potential electrolytes in all-solid-state Mg batteries. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Jia D, Zhou Q, Deng Q. [Research progress on three-dimensional printing of cardiovascular in vitro functional flow models]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:318-322. [PMID: 29747332 DOI: 10.3760/cma.j.issn.0253-3758.2018.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang W, Ward R, Jia D, Ashworth S, Estoesta E, Moodie T, McCredie R, Ahern V, Stuart K, Ngui N, French J, Elder E, Farlow D. EP-1305: Location of arm draining lymph node in relation to breast cancer radiotherapy field and volume. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31615-3] [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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Zhang T, Zheng T, Wang C, Zhang W, Jia D, Wang R, Qiao B. EFFECTS OF Wnt / β-CATENIN SIGNALING PATHWAY AND STAR D7 ON TESTOSTERONE SYNTHESIS. Acta Endocrinol (Buchar) 2018; 14:155-162. [PMID: 31149252 PMCID: PMC6516511 DOI: 10.4183/aeb.2018.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND This study aimed to assess the mechanism through which Wnt/ beta - catenin signaling pathway, and StarD7, prometes testosterone synthesis, and to explore a new pathway for the regulation of testosterone synthesis. ANIMALS AND METHODS Leydig cells were isolated from male Sprague-Dawley rats divided into four groups and treated with Annexin 5 in concentration of 0, 0.1, 1 and 10 nmol/L. Testosterone secretion, expression of StarD7, StarD7 mRNA, β-catenin and changes of β - catenin localization in Leydig cells of testis of rats were tested in the four groups. RESULTS mRNA and protein levels of StarD7 and β-catenin increased significantly, upon stimulation with 1 nmol/L annexin 5. Accumulation of β-catenin inside the cells and the nucleus, was observed by immunofluorescence staining, in cells treated with annexin 5. These findings indicate a possible role of StarD7 and β-catenin in the process of annexin5-mediated stimulation of testosterone synthesis. CONCLUSIONS Wnt/β-catenin signaling pathway and StarD7 are involved in the process of annexin5 stimulation of testosterone synthesis. Activation of Wnt/ β-catenin signaling pathway by Annexin5, and increase in StarD7 expression lead to elevated expression of key regulatory enzymes in testosterone synthesis, thus promoting testosterone synthesis.
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Affiliation(s)
| | | | | | | | | | | | - B. Qiao
- The First Affiliated Hospital of Zhengzhou University, Department of Urology, Zhengzhou, China
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Diestler DJ, Jia D, Manz J, Yang Y. Na 2 Vibrating in the Double-Well Potential of State 2 1Σ u+ (JM = 00): A Pulsating "Quantum Bubble" with Antagonistic Electronic Flux. J Phys Chem A 2018; 122:2150-2159. [PMID: 29364671 DOI: 10.1021/acs.jpca.7b11732] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The theory of concerted electronic and nuclear flux densities associated with the vibration and dissociation of a multielectron nonrotating homonuclear diatomic molecule (or ion) in an electronic state 2S+1Σg,u+ (JM = 00) is presented. The electronic population density, nuclear probability density, and nuclear flux density are isotropic. A theorem of Barth , presented in this issue, shows that the electronic flux density (EFD) is also isotropic. Hence, the evolving system appears as a pulsating, or exploding, "quantum bubble". Application of the theory to Na2 vibrating in the double-minimum potential of the 2 1Σu+ (JM = 00) excited state reveals that the EFD consists of two antagonistic components. One arises from electrons that flow essentially coherently with the nuclei. The other, which is oppositely directed (i.e., antagonistic) and more intense, is due to the transition in electronic structure from "Rydberg" to "ionic" type as the nuclei traverse the potential barrier between inner and outer potential wells. This "transition" component of the EFD rises and falls sharply as the nuclei cross the barrier.
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Affiliation(s)
- D J Diestler
- Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany.,University of Nebraska-Lincoln , Lincoln, Nebraska 68583, United States
| | | | - J Manz
- Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany.,Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China
| | - Y Yang
- Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China
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Jia P, Wu N, Jia D, Sun Y. Association Between Osteoprotegerin Gene Polymorphisms and Risk of Coronary Artery Disease: A Systematic Review and Meta-analysis. Balkan J Med Genet 2017; 20:27-34. [PMID: 29876230 PMCID: PMC5972500 DOI: 10.1515/bjmg-2017-0021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Osteoprotegerin (OPG) has been demonstrated to be a novel biomarker for predicting prevalence and severity of coronary artery disease (CAD). Furthermore, recent studies have shown that OPG gene polymorphisms are associated with a susceptibility to CAD. However, published studies showed inconsistent results. Therefore, a meta-analysis of eligible studies reporting the association between OPG gene polymorphisms and CAD was carried out. A systematic search was conducted using PubMed, Web of Science, Cochrane Library, Chinese National Knowledge Infrastructure (CNKI) and Chinese Wan Fang databases. Odds ratio (OR) with corresponding 95% confidence interval (95% CI) were calculated. Overall, six eligible studies were included and four OPG gene polymorphisms (G209A, T245G, T950C and G1181C) were further evaluated for the association with susceptibility to CAD in this meta-analysis. Meta-analysis showed that G1181C and T950C polymorphisms were strongly associated with the risk of CAD, but no association existed between G209A and T245G polymorphisms and the risk of CAD. In conclusion, our meta-analysis is the first report to estimate the association between OPG gene polymorphisms and susceptibility to CAD. Further large scale case-control studies with rigorous design should be conducted to confirm the above conclusions in the future.
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Affiliation(s)
- P Jia
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
| | - N Wu
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
| | - D Jia
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
- Professor Dalin Jia and/or Professor Yingxian Sun, Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North Nanjing Street, Heping District, Shenyang 110001, Liaoning Province, People’s Republic of China. Tel: +86-242-326-9477. Fax: +86-242-326-9477.
| | - Y Sun
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
- Professor Dalin Jia and/or Professor Yingxian Sun, Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North Nanjing Street, Heping District, Shenyang 110001, Liaoning Province, People’s Republic of China. Tel: +86-242-326-9477. Fax: +86-242-326-9477.
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Shen GM, Shi CY, Fan C, Jia D, Wang SQ, Xie GS, Li GY, Mo ZL, Huang J. Isolation, identification and pathogenicity of Vibrio harveyi, the causal agent of skin ulcer disease in juvenile hybrid groupers Epinephelus fuscoguttatus × Epinephelus lanceolatus. J Fish Dis 2017; 40:1351-1362. [PMID: 28252178 DOI: 10.1111/jfd.12609] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 12/08/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
The hybrid grouper, Epinephelus fuscoguttatus (♀) × Epinephelus lanceolatus (♂), is a newly bred cultivated marine fish species of high economic value. However, a skin ulcer disease with high mortality has occurred, and the responsible pathogen remains unknown. In this study, we summarized the epidemic status and external signs of this disease. We screened potential pathogens and finally isolated one bacterial strain ML01 from affected fish. We subjected healthy juvenile hybrid groupers to bacterial challenge tests with the isolate by immersion, immersion after dermal abrasion and intraperitoneal injection, respectively. Within 14 days post-infection, the isolate ML01 caused mass mortality of juveniles infected via immersion after dermal abrasion or intraperitoneal injection. Diseased juveniles displayed obvious signs of skin ulcers. The median lethal dose of ML01 by intraperitoneal injection was 1.10 × 105 colony-forming units. ML01 was identified as Vibrio harveyi by bacterial morphology, analytical profile index identification, 16S rDNA sequencing and multilocus sequence analysis. Antibiotic susceptibility tests showed that ML01 was sensitive to ceftriaxone, doxycycline and minocycline. The results of this study suggest that V. harveyi is the causal agent of skin ulcer disease in juvenile hybrid groupers, thus providing a basis for effective control and prevention of this disease.
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Affiliation(s)
- G M Shen
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - C Y Shi
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - C Fan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - D Jia
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - S Q Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - G S Xie
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - G Y Li
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Z L Mo
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - J Huang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Jia D, Zhou Q, Song HN, Hu B, Chen JL, Mei DE, Tan TT, Guo RQ. P4563A comparative study of 3d reconstruction of left atrial appendage model based on ultrasound and CT 3d DICOMdata. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Wang C, Wang J, Jia D, Li L, Jia B, Fan S, Song J, Hu X, Wang Y, Wang D. Anti-nociceptive effects of Paecilomyces hepiali via multiple pathways in mouse models. Genet Mol Res 2016; 15:gmr8996. [PMID: 27706666 DOI: 10.4238/gmr.15038996] [Citation(s) in RCA: 3] [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] [Indexed: 11/03/2022]
Abstract
Paecilomyces hepiali (PH), a well-known medicinal fungus, has various pharmacological efficacies. In our study, the antinociceptive effects of PH and underlying mechanisms were evaluated using various mouse models. An acetic acid-induced writhing test, hot plate test, and formalin test were employed to evaluate the antinociceptive activities of PH. The levels of neuronal nitric oxide synthase (nNOS) in the hypothalamus and monoamine neurotransmitters in the serum and hypothalamus of experimental mice were examined. Additionally, hot plate tests using mice pretreated with various antagonists were used to determine the mechanisms of PH-mediated antinociception. The PH-enhanced latency period of mice in the hot plate test was significantly blocked by pretreatment with atropine and glibenclamide. PH shortened the phase I and phase II reaction times of formalin-treated mice. Strongly reduced writhing and stretching induced by acetic acid were observed in PH-treated mice, indicating that PH mainly exerts antinociceptive activity on neurogenic pain. After thermal pain stimulation for 30 s, compared to control mice, 7-day PH-treated mice had lower nNOS and dopamine levels, and increased levels of serotonin in both the serum and hypothalamus. Collectively, our data showed that PH mediated antinociceptive activities via multiple pathways, including monoamines, nNOS/ATP-sensitive K+ channels, and M-type acetylcholine receptors.
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Affiliation(s)
- C Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - J Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - D Jia
- School of Life Sciences, Jilin University, Changchun, China
| | - L Li
- School of Life Sciences, Jilin University, Changchun, China
| | - B Jia
- School of Life Sciences, Jilin University, Changchun, China
| | - S Fan
- School of Life Sciences, Jilin University, Changchun, China
| | - J Song
- School of Life Sciences, Jilin University, Changchun, China
| | - X Hu
- Faculty of Clinical Medicine, Changchun Medical College, Changchun, China
| | - Y Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - D Wang
- School of Life Sciences, Jilin University, Changchun, China
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15
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Jia D, Lu W, Wang C, Sun S, Cai G, Li Y, Wang G, Liu Y, Zhang M, Wang D. Investigation on Immunomodulatory Activity of Calf Spleen Extractive Injection in Cyclophosphamide-induced Immunosuppressed Mice and Underlying Mechanisms. Scand J Immunol 2016; 84:20-7. [DOI: 10.1111/sji.12442] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 04/17/2016] [Indexed: 12/20/2022]
Affiliation(s)
- D. Jia
- School of Life Sciences; Jilin University; Changchun China
| | - W. Lu
- School of Life Sciences; Jilin University; Changchun China
| | - C. Wang
- School of Life Sciences; Jilin University; Changchun China
| | - S. Sun
- JiLin AoDong Medicine Industry Group Co. Ltd.; Taonan China
| | - G. Cai
- School of Life Sciences; Jilin University; Changchun China
| | - Y. Li
- School of Life Sciences; Jilin University; Changchun China
| | - G. Wang
- JiLin AoDong Medicine Industry Group Co. Ltd.; Taonan China
| | - Y. Liu
- School of Life Sciences; Jilin University; Changchun China
| | - M. Zhang
- School of Life Sciences; Jilin University; Changchun China
| | - D. Wang
- School of Life Sciences; Jilin University; Changchun China
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16
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Jia D, Wang D, Wu H, Lian Q. Preparation and adsorption properties of magnetic Co0.5Ni0.5Fe2O4–chitosan nanoparticles. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216030294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Yepes M, Wu F, Torre E, Cuellar-Giraldo D, Jia D, Cheng L. Tissue-type plasminogen activator induces synaptic vesicle endocytosis in cerebral cortical neurons. Neuroscience 2016; 319:69-78. [PMID: 26820595 DOI: 10.1016/j.neuroscience.2016.01.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 01/16/2016] [Accepted: 01/19/2016] [Indexed: 01/22/2023]
Abstract
The release of the serine proteinase tissue-type plasminogen activator (tPA) from the presynaptic terminal of cerebral cortical neurons plays a central role in the development of synaptic plasticity, adaptation to metabolic stress and neuronal survival. Our earlier studies indicate that by inducing the recruitment of the cytoskeletal protein βII-spectrin and voltage-gated calcium channels to the active zone, tPA promotes Ca(2+)-dependent translocation of synaptic vesicles (SVs) to the synaptic release site where they release their load of neurotransmitters into the synaptic cleft. Here we used a combination of in vivo and in vitro experiments to investigate whether this effect leads to depletion of SVs in the presynaptic terminal. Our data indicate that tPA promotes SV endocytosis via a mechanism that does not require the conversion of plasminogen into plasmin. Instead, we show that tPA induces calcineurin-mediated dynamin I dephosphorylation, which is followed by dynamin I-induced recruitment of the actin-binding protein profilin II to the presynaptic membrane, and profilin II-induced F-actin formation. We report that this tPA-induced sequence of events leads to the association of newly formed SVs with F-actin clusters in the endocytic zone. In summary, the data presented here indicate that following the exocytotic release of neurotransmitters tPA activates the mechanism whereby SVs are retrieved from the presynaptic membrane and endocytosed to replenish the pool of vesicles available for a new cycle of exocytosis. Together, these results indicate that in murine cerebral cortical neurons tPA plays a central role coupling SVs exocytosis and endocytosis.
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Affiliation(s)
- M Yepes
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA; Department of Neurology, Veterans Affairs Medical Center, Atlanta, GA, USA.
| | - F Wu
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - E Torre
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - D Cuellar-Giraldo
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - D Jia
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - L Cheng
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
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18
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Niu Z, Xie C, Wen X, Tian F, Ding P, He Y, Lin J, Yuan S, Guo X, Jia D, Chen WQ. Placenta mediates the association between maternal second-hand smoke exposure during pregnancy and small for gestational age. Placenta 2015; 36:876-80. [DOI: 10.1016/j.placenta.2015.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/22/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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Chen Z, Wang Z, Guo W, Zhang Z, Zhao F, Zhao Y, Jia D, Ding J, Wang H, Yao M, He X. TRIM35 Interacts with pyruvate kinase isoform M2 to suppress the Warburg effect and tumorigenicity in hepatocellular carcinoma. Oncogene 2015; 34:3946-56. [PMID: 25263439 DOI: 10.1038/onc.2014.325] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 08/04/2014] [Accepted: 08/19/2014] [Indexed: 12/21/2022]
Abstract
Tripartite motif-containing protein 35 (TRIM35) is a member of RBCC family, which has a highly conserved order consisting of a RING domain followed by one or two B-Box domains and then a coiled-coil domain. We previously identified TRIM35 as a novel tumor suppressor in human hepatocellular carcinoma (HCC). However, the molecular mechanism that TRIM35 uses to suppress tumorigenicity is largely unknown. Pyruvate kinase isoform M2 (PKM2) has been demonstrated to have a central role in metabolic reprogramming during cancer progression. Phosphorylation of PKM2 tyrosine residue 105 (Y105) regulates PKM2 to provide a metabolic advantage to tumor cells, thereby promoting tumor growth. In the present work, mass spectrometry analysis demonstrated an interaction between TRIM35 and PKM2. Co-IP experiments confirmed that TRIM35 interacts with PKM2 and that the coiled-coil domain is required for such an interaction. Furthermore, the coiled-coil domain mediates decreases in the Warburg effect and in the cell proliferation of HCC cells. In addition, TRIM35 suppresses the tumorigenicity of HCC cells through the blockade of PKM2 Y105 phosphorylation. Collectively, our data reveal a new function for TRIM35, which is to regulate the Warburg effect and tumorigenicity through interaction with PKM2 in HCC.
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Affiliation(s)
- Z Chen
- 1] Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China [2] State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Wang
- Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Fudan University, Shanghai, China
| | - W Guo
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Z Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Zhao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Zhao
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - D Jia
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - J Ding
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - H Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - M Yao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X He
- 1] Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China [2] State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Jia D, Yang W, Li L, Liu H, Tan Y, Ooi S, Chi L, Filion LG, Figeys D, Wang L. β-Catenin and NF-κB co-activation triggered by TLR3 stimulation facilitates stem cell-like phenotypes in breast cancer. Cell Death Differ 2014; 22:298-310. [PMID: 25257174 PMCID: PMC4291491 DOI: 10.1038/cdd.2014.145] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 06/26/2014] [Accepted: 08/04/2014] [Indexed: 12/26/2022] Open
Abstract
Cancer stem cells (CSCs) are responsible for tumor initiation and progression. Toll-like receptors (TLRs) are highly expressed in cancer cells and associated with poor prognosis. However, a linkage between CSCs and TLRs is unclear, and potential intervention strategies to prevent TLR stimulation-induced CSC formation and underlying mechanisms are lacking. Here, we demonstrate that stimulation of toll-like receptor 3 (TLR3) promotes breast cancer cells toward a CSC phenotype in vitro and in vivo. Importantly, conventional NF-κB signaling pathway is not exclusively responsible for TLR3 activation-enriched CSCs. Intriguingly, simultaneous activation of both β-catenin and NF-κB signaling pathways, but neither alone, is required for the enhanced CSC phenotypes. We have further identified a small molecule cardamonin that can concurrently inhibit β-catenin and NF-κB signals. Cardamonin is capable of effectively abolishing TLR3 activation-enhanced CSC phenotypes in vitro and successfully controlling TLR3 stimulation-induced tumor growth in human breast cancer xenografts. These findings may provide a foundation for developing new strategies to prevent the induction of CSCs during cancer therapies.
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Affiliation(s)
- D Jia
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5
| | - W Yang
- 1] Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5 [2] Life Science College of Northwest A&F University, Yangling, Shaanxi 712100, China
| | - L Li
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5
| | - H Liu
- 1] Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5 [2] Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Bio-X Institutes, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Y Tan
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5
| | - S Ooi
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5
| | - L Chi
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
| | - L G Filion
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5
| | - D Figeys
- 1] Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5 [2] Department of Chemistry, University of Ottawa, Ottawa, Ontario, Canada [3] Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - L Wang
- 1] Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Ontario, Canada K1H8M5 [2] Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada [3] Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
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Sun L, Ma C, Liu S, Zou L, Jia D. Mitral annular tissue velocity in the diagnosis of coronary artery disease. Eur Rev Med Pharmacol Sci 2014; 18:3754-3760. [PMID: 25555863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Non-invasive methods of coronary disease detection are immediately needed. Recent work suggested that mitral annular tissue velocity measurements could be helpful for assessing left ventricular function. We aim to determine the effect of coronary artery lesion on left ventricular function using tissue Doppler imaging (TDI), and to discuss the role of mitral annular tissue velocity in the diagnosis of coronary heart disease (CHD). PATIENTS AND METHODS Coronary angiographic examinations were conducted for 68 patients with suspected CHD. Left ventricular ejection fraction (LVEF), early diastolic mitral flow velocity E, late diastolic mitral flow velocity A, mean systolic (Sa) and mean early diastolic velocity (Ea) of the septal and lateral mitral annulus were measured before the angiographic examination. Patients were grouped according to the number of branches with ≥ 50% stenosis. The control group has 15 individuals. The remaining 53 patients with stenosis in 1, 2 and 3 branches were grouped into 1-Branch, 2-Branch, 3-Branch-Light-Condition and 3-Branch-Heavy-Condition groups, respectively. No significant differences in the other general health parameters of the patients were found. RESULTS There was no significant difference in LVEF and E/A but in Sa, Ea and E/Ea values between CHD and non-CHD patients. The E/Ea value was significantly elevated in CHD patients, aggravated by this pathological condition. The area bounded by the ROC (receiver operating characteristic) curve of E/Ea is the largest. The sensitivity and specificity of using E/Ea > 8.34 as the diagnostic criterion to pinpoint CHD were 77.4% and 100%, respectively. CONCLUSIONS E/Ea is a good indicator of diastolic function and can be useful to diagnose CHD.
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Affiliation(s)
- L Sun
- Department of Cardiology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
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Jia D, Heng LJ, Yang RH, Gao GD. Fish oil improves learning impairments of diabetic rats by blocking PI3K/AKT/nuclear factor-κB-mediated inflammatory pathways. Neuroscience 2013; 258:228-37. [PMID: 24252320 DOI: 10.1016/j.neuroscience.2013.11.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [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: 08/06/2013] [Revised: 10/25/2013] [Accepted: 11/07/2013] [Indexed: 01/15/2023]
Abstract
Previous research has demonstrated that diabetes induces learning and memory deficits. However, the mechanism of memory impairment induced by diabetes is poorly understood. Dietary fatty acids, especially polyunsaturated fatty acids, have been shown to enhance learning and memory and prevent memory deficits in various experimental conditions. The present study investigated the effects of fish oil supplementation on the lipid peroxidation, inflammation and neuron apoptosis in the hippocampus of streptozotocin (STZ)-induced diabetes rats. The effects of diabetes and fish oil treatment on the spatial learning and memory were also evaluated using the Morris Water Maze. STZ-induced diabetes impaired spatial learning and memory of rats, which was associated with the inflammation, oxidative stress and apoptosis of hippocampal neurons. Fish oil administration ameliorated cognitive deficit, reduced oxidative stress and tumor necrosis factor α (TNF-α), protected the hippocampal neurons by increasing Protein Kinase B (AKT) phosphorylation and decreasing caspase-9 expression. These results suggested that the principle mechanisms involved in the antidiabetic and neuroprotective effect of fish oil were its antioxidant, anti-inflammatory and anti-apoptosis potential, supporting a potential role for fish oil as an adjuvant therapy for the prevention and treatment of diabetic complications.
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Affiliation(s)
- D Jia
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, PR China
| | - L-J Heng
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, PR China
| | - R-H Yang
- Department of Nutrition and Food Hygiene, The Ministry of Education Key Laboratory of Hazard Assessment and Control in Special Operational Environment, School of Public Health, The Fourth Military Medical University, Xi'an 710032, PR China.
| | - G-D Gao
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, PR China.
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Abstract
Abstract
Two kinds of nanocomposites of nitrile-butadiene rubber (NBR), zinc methacrylate (ZDMA) and organomontmorillonite (OMMT), NBR-ZDMA-HMMTand NBR-ZDMA-USMMT, were prepared by the reactive mixing intercalation method with ZDMA and two kinds of organomontmorillonite, hexadecyltrimethylammonium bromide modified montmorillonite (HMMT) and unsaturated chemical modified montmorillonite (USMMT). The structure and properties of the nanocomposites were investigated by X-ray diffraction, transmission electron microscopy, differential scanning calorimetry and determination of crosslinking density and mechanical properties. The results showed that the interlayer galleries of HMMT and USMMT were enlarged as ZDMA polymerized in situ in rubber matrix and between the interlayer of the silicates. The layered silicates were dispersed disorderly in rubber matrix at a nanometer level. The crosslinking density of the NBR vulcanizates was increased by the addition of ZDMA and HMMT or USMMT. The glass transition temperatures of the NBR-ZDMA-OMMT nanocomposites were higher than that of the neat NBR. The mechanical properties of the NBR-ZDMA-HMMTand NBR-ZDMA-USMMT nanocomposites are remarkably superior to those of the neat NBR vulcanizate.
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Affiliation(s)
- L. Liu
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - Y. Luo
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - D. Jia
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - B. Guo
- College of Materials Science and Engineering, South China University of Technology, Guangzhou, China
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Liu S, Yao K, Jia D, Zhao N, Lai W, Yuan H. A Pretreatment Method for HPLC Analysis of Cypermethrin in Microbial Degradation Systems. J Chromatogr Sci 2012; 50:469-76. [DOI: 10.1093/chromsci/bms030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Ge S, Wang G, Shen Y, Zhang Q, Jia D, Wang H, Dong Q, Yin T. Cytotoxic effects of MgO nanoparticles on human umbilical vein endothelial cells in vitro. IET Nanobiotechnol 2011; 5:36. [PMID: 21495778 DOI: 10.1049/iet-nbt.2010.0022] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The MgO nanoparticles are widely used in many fields. However, the toxicity of these nanoparticles to cells and organs remains fairly undiscovered. In this study, the cytotoxicity of MgO nanoparticles on human umbilical vein endothelial cells (HUVECs) in vitro was examined. The morphology and size of MgO nanoparticles were analysed by the transmission electron microscope (TEM) and nanoparticle size analyser. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2 h-tetrazolium bromide) assay, 4',6-diamidino-2-phenylindole (DAPI) staining analysis, NO release and total antioxidation competence (T-AOC) assay were used to evaluate the cytotoxicity of MgO nanoparticles. The results showed that most MgO nanoparticles were spherical with agglomerated state and the diameter of single particle was about 100 nm. Meanwhile, low concentration (below 200 [micro sign]g/ml) of MgO nanoparticles suspension showed no cytotoxicity by MTT assay. However, once the concentration of MgO nanoparticles was higher than 500 [micro sign]g/ml, the relative growth rate was lower than the control. The DAPI staining analysis results showed no significant difference of the cells morphology between the groups with or without MgO nanoparticles. In addition, the MgO nanoparticles significantly enhanced the NO release and T-AOC content of the HUVECs. The testing results indicated that low concentration of MgO nanoparticles exhibited non-cytotoxicity.
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Affiliation(s)
- S Ge
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College of Chongqing University, Chongqing, Peoples' Republic of China
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Zhang D, Wang J, Li T, Zhang A, Jia D. Synthesis and Characterization of a Novel Low-Viscosity Unsaturated Hyperbranched Polyester Resin. Chem Eng Technol 2010. [DOI: 10.1002/ceat.201000329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hu B, Zhou Y, Liu Y, Shi D, Zhao Y, Jia D. e0343 Triple versus dual antiplatelet therapy in patients with acute coronary syndrome undergoing percutaneous coronary intervention. Heart 2010. [DOI: 10.1136/hrt.2010.208967.343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang P, Niu L, Gao L, Li WX, Jia D, Wang XL, Gao GD. Neuroprotective Effect of Gypenosides against Oxidative Injury in the Substantia Nigra of a Mouse Model of Parkinson's Disease. J Int Med Res 2010; 38:1084-92. [PMID: 20819446 DOI: 10.1177/147323001003800336] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Oxidative injury has been implicated in the aetiology of Parkinson's disease (PD) and gypenosides (GP), which are saponins with various bioactivities, have shown antioxidative effects in vitro. The present study was designed to evaluate the effect of GP on a 1-methyl-4-phenyl-1,2,3, 6-tetrahydropyridine (MPTP)-induced mouse model of PD. Acute administration of MPTP led to decreased glutathione content and reduced superoxide dismutase activity in the substantia nigra of the mice, which resulted in oxidative stress, loss of nigral dopaminergic neurons and motor dysfunction. Co-treatment with GP attenuated all the injuries induced by MPTP in a dose-dependent manner. The neuroprotective effect of GP may be attributed to increased antioxidation, as manifested by significantly increased glutathione content and enhanced superoxide dismutase activity in the substantia nigra. These results strongly indicate the possible therapeutic potential of GP as an antioxidant in PD.
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Affiliation(s)
- P Wang
- Department of Neurosurgery, Tangdu Hospital
| | - L Niu
- Department of Anatomy, Histology and Embryology, The Fourth Military Medical University, Xi'an, China
| | - L Gao
- Department of Neurosurgery, Tangdu Hospital
| | - W-X Li
- Department of Neurosurgery, Tangdu Hospital
| | - D Jia
- Department of Neurosurgery, Tangdu Hospital
| | - X-L Wang
- Department of Neurosurgery, Tangdu Hospital
| | - G-D Gao
- Department of Neurosurgery, Tangdu Hospital
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Liu H, Jia D, Fu J, Zhao S, He G, Ling EA, Gao J, Hao A. Effects of granulocyte colony-stimulating factor on the proliferation and cell-fate specification of neural stem cells. Neuroscience 2009; 164:1521-30. [DOI: 10.1016/j.neuroscience.2009.09.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 09/11/2009] [Accepted: 09/11/2009] [Indexed: 12/15/2022]
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Wang G, Xiao L, Wu X, Tang C, Jia D, Liu Y. Abstract: P253 EFFECTS OF SOPHORCARPIDINE ON NUMBER AND FUNCTION OF ENDOTHELIAL PROGENITOR CELLS FROM BONE MARROW OF SD RAT. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70548-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
The non-linear dynamic specificity of the firing pattern discharged from neurons of the internal globus pallidus (GPi) was investigated by recording their spontaneous firing using a microelectrode during posteroventral pallidotomy in eight patients with Parkinson's disease. Raw data from the cells were processed to extract spiking events (discharges above a selected threshold) and the interspike interval was measured. Using the unstable periodic orbits extraction method, significant period-1, −2 and −3 orbits were identified in burst firing discharged from the GPi cells in all eight patients, suggesting that deterministic dynamics exist in the timing of the discharges. As well as providing a useful peri-operative technique for locating posteroventral pallidotomy targets in Parkinson's disease, this method also provides a promising basis for investigating characteristic neuronal discharges in other regions of the brain and for various other neurological disorders.
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Affiliation(s)
- W Li
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - D Jia
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - J-L Wang
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Q Liang
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Z Jian
- Institute of Biomedical Engineering, School of Life Sciences and Technology, Xi'an Jiaotong University, Xi'an, People's Republic of China
| | - X-L Wang
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - S He
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
| | - G Gao
- Institute of Neurosurgery, Tangdu Hospital, Institute for Functional Brain Disorders, Fourth Military Medical University, Xi'an, People's Republic of China
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Leung FKP, Cheung WL, Lin XD, Jia D, Chung CY. Poly(ethylene terephthalate)/polypropylene microfibrillar composites. III. Structural development of poly(ethylene terephthalate) microfibers. J Appl Polym Sci 2007. [DOI: 10.1002/app.24750] [Citation(s) in RCA: 8] [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: 11/07/2022]
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Abstract
Glucocorticoid administration to mice results in a rapid loss of bone mineral density due to an imbalance in osteoblast and osteoclast numbers. Whereas excess glucocorticoids reduce both osteoblast and osteoclast precursors, cancellous osteoclast number surprisingly does not decrease as does osteoblast number, presumably due to the ability of glucocorticoids to promote osteoclast life span. Whether glucocorticoids act directly on osteoclasts in vivo to promote their life span and whether this contributes to the rapid loss of bone with glucocorticoid excess remains unknown. To determine the direct effects of glucocorticoids on osteoclasts in vivo, we expressed 11beta-hydroxysteroid dehydrogenase type 2, an enzyme that inactivates glucocorticoids, specifically in the osteoclasts of transgenic mice using the tartrate-resistant acid phosphatase promoter. Bone mass, geometry, and histomorphometry were similar in untreated wild-type and transgenic animals. Glucocorticoid administration for 7 d caused equivalent increases in cancellous osteoblast apoptosis, and equivalent decreases in osteoblasts, osteoid, and bone formation, in wild-type and transgenic mice. In contrast, glucocorticoids stimulated expression of the mRNA for calcitonin receptor, an osteoclast product, in wild-type but not transgenic mice. Consistent with the previous finding that glucocorticoids decrease osteoclast precursors and prolong osteoclast life span, glucocorticoids decreased cancellous osteoclast number in the transgenic mice but not wild-type mice. In accord with this decrease in osteoclast number, the loss of bone density observed in wild-type mice was strikingly prevented in transgenic mice. These results demonstrate for the first time that the early, rapid loss of bone caused by glucocorticoid excess results from direct actions on osteoclasts.
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Affiliation(s)
- D Jia
- Department of Internal Medicine, and the Central Arkansas Veterans Healthcare System, University of Arkansas for Medical Sciences, 4301 West Markham Street, Slot 587, Little Rock, Arkansas 72205, USA
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Bellows CG, Jia D, Jia Y, Hassanloo A, Heersche JNM. Different effects of insulin and insulin-like growth factors I and II on osteoprogenitors and adipocyte progenitors in fetal rat bone cell populations. Calcif Tissue Int 2006; 79:57-65. [PMID: 16897348 DOI: 10.1007/s00223-005-0234-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2005] [Accepted: 04/12/2006] [Indexed: 11/26/2022]
Abstract
We investigated the effects of insulin (1-1,000 nM), insulin-like growth factor (IGF)-I, and IGF-II (3-100 nM each) alone or together with 10 nM dexamethasone (DEX) or 10 nM 1,25-dihydroxyvitamin D(3) (1,25[OH](2)D(3)) on proliferation and differentiation of adipocyte and osteoblast progenitors in bone cell populations derived from fetal rat calvaria. The effects on differentiation were evaluated by counting the number of bone or osteoid nodules and adipocyte colonies and the effects on proliferation, by measuring their size by image analysis. The types of cells studied were 1,25(OH)(2)D(3)- and DEX-responsive adipocyte progenitors and DEX-dependent and independent osteoprogenitors. Both IGF-I and IGF-II stimulated osteoprogenitor differentiation both alone and in the presence of DEX, while insulin stimulated osteoprogenitor differentiation only in the absence of DEX. Neither IGF-I/-II nor insulin affected proliferation of osteoprogenitors. Insulin had little effect on adipocyte differentiation by itself but strongly stimulated differentiation in the presence of either 1,25(OH)(2)D(3) or DEX, while IGF-II stimulated adipocyte differentiation in both the absence and presence of 1,25(OH)(2)D(3) or DEX. IGF-I by itself or in the presence of DEX strongly stimulated adipocyte cell differentiation but had little effect in the presence of 1,25(OH)(2)D(3). Our results demonstrate that insulin, IGF-II, and IGF-I have specific and different effects on the differentiation and proliferation of different groups of progenitor cells.
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Affiliation(s)
- C G Bellows
- Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, Ontario M5G 1G6, Canada.
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Abstract
Bexarotene (Targretin), is a synthetic high-affinity RXR receptor agonist with limited affinity for RAR receptors. Bexarotene has shown efficacy in a phase I/II trial of non-small-cell lung cancers. However, the chemopreventive efficacy of bexarotene has not been determined in mouse lung cancer models. In this study, we have investigated the ability of bexarotene to inhibit lung tumor progression in the mutant A/J mouse models with genetic alterations in p53 or K-ras, two of the most commonly altered genes in human lung tumorigenesis. Mice were administered vinyl carbamate (VC), a carcinogen, by a single intraperitoneal injection (i.p.) at 6 weeks of age. Bexarotene was given by gavage starting at 16 weeks after VC and was continued for 12 weeks. Although all mice developed lung tumors, only 7% of lung tumors were adenocarcinomas in wild-type mice, whereas 22 and 26% of lung tumors were adenocarcinomas in p53 transgenic or K-ras heterozygous deficient mice. Bexarotene inhibited both tumor multiplicity and tumor volume in mice of all three genotypes. Furthermore, bexarotene reduced the progression of adenoma to adenocarcinoma by approximately 50% in both p53(wt/wt)K-ras(ko/wt) and p53(wt/wt)K-ras(wt/wt) mice. Thus, bexarotene appears to be an effective preventive agent against lung tumor growth and progression.
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Affiliation(s)
- Y Wang
- Department of Surgery and the Siteman Cancer Center, Washington University School of Medicine, St Louis, MO 63110, USA
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Lin XD, Jia D, Leung FKP, Cheung WL. Study on poly(ethylene terephthalate)/polypropylene microfibrillar composites. II. Solid-state drawing behavior. J Appl Polym Sci 2004. [DOI: 10.1002/app.20618] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Li J, Jia D, Chen X. HUA1, a regulator of stamen and carpel identities in Arabidopsis, codes for a nuclear RNA binding protein. Plant Cell 2001; 13:2269-81. [PMID: 11595801 PMCID: PMC139158 DOI: 10.1105/tpc.010201] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2001] [Accepted: 07/27/2001] [Indexed: 05/19/2023]
Abstract
Stamen and carpel identities are specified by the combinatorial activities of several floral homeotic genes, APETALA3, PISTILLATA, AGAMOUS (AG), SEPALLATA1 (SEP1), SEPALLATA2 (SEP2), and SEPALLATA3 (SEP3), all of which code for MADS domain DNA binding proteins. AG and the SEP genes also control floral determinacy. HUA1 and HUA2 were identified previously as regulators of stamen and carpel identities and floral determinacy because the recessive hua1-1 or hua2-1 allele affected these processes in plants with a lower dosage of functional AG (either homozygous for the weak ag-4 allele or heterozygous for the strong ag-1 allele). HUA2 was cloned previously and shown to code for a novel protein. We isolated the HUA1 gene using a map-based approach and show that it encodes a protein with six CCCH-type zinc finger motifs that is also found in yeast, Caenorhabditis elegans, Drosophila melanogaster, and mammalian proteins. Several such genes from invertebrates and mammals are known to play key regulatory roles in development. Therefore, HUA1 are another example of non-MADS domain proteins involved in organ identity specification. We demonstrated that HUA1 binds ribohomopolymers, preferentially poly rU and poly rG, but not double-stranded DNA in vitro. This finding suggests that HUA1, like several mammalian CCCH zinc finger proteins, is an RNA binding protein. Therefore, HUA1 likely participates in a new regulatory mechanism governing flower development.
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Affiliation(s)
- J Li
- Waksman Institute, Rutgers University, 190 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
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38
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Abstract
Stamen and carpel identities are specified by the combinatorial activities of several floral homeotic genes, APETALA3, PISTILLATA, AGAMOUS (AG), SEPALLATA1 (SEP1), SEPALLATA2 (SEP2), and SEPALLATA3 (SEP3), all of which code for MADS domain DNA binding proteins. AG and the SEP genes also control floral determinacy. HUA1 and HUA2 were identified previously as regulators of stamen and carpel identities and floral determinacy because the recessive hua1-1 or hua2-1 allele affected these processes in plants with a lower dosage of functional AG (either homozygous for the weak ag-4 allele or heterozygous for the strong ag-1 allele). HUA2 was cloned previously and shown to code for a novel protein. We isolated the HUA1 gene using a map-based approach and show that it encodes a protein with six CCCH-type zinc finger motifs that is also found in yeast, Caenorhabditis elegans, Drosophila melanogaster, and mammalian proteins. Several such genes from invertebrates and mammals are known to play key regulatory roles in development. Therefore, HUA1 are another example of non-MADS domain proteins involved in organ identity specification. We demonstrated that HUA1 binds ribohomopolymers, preferentially poly rU and poly rG, but not double-stranded DNA in vitro. This finding suggests that HUA1, like several mammalian CCCH zinc finger proteins, is an RNA binding protein. Therefore, HUA1 likely participates in a new regulatory mechanism governing flower development.
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Affiliation(s)
- J Li
- Waksman Institute, Rutgers University, 190 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
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39
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Liu F, Jia D, Wang Y. [Research development of polylactide and its composites in bone-tissue engineering]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2001; 18:448-50, 487. [PMID: 11605514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Polylactide has good biocompatibility and biodegradability in the body and is one of the biomaterials approved by FDA. The research development in the application of polylactide(PLA), hydroxylapatite(HA)/ PLA composites and bioactive organic materials/ PLA composites in bone-tissue engineering are reviewed in this paper.
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Affiliation(s)
- F Liu
- Materials College, South China University of Technology, Guangzhou 510640
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40
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Jia D, Wu B, Zhu J, Liu Y. [Stable high quality luminescent material CaAl4O7:Tb3+, Ce3+]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:7-10. [PMID: 12953565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We had made CaAl4O7:Tb3+, Ce3+ samples by sintering the sample at 1,300 degrees C in reduction environment N2 + 5% H2. Emission lines corresponding to the 3D4 to 7Fj(J = 6,5,4,3) optical transitions of the Tb2+ ions were observed at 485,545,590 and 620 nm respectively. The particle size of the sample was controlled to less that 1 micron. The lattice of the sample was rather regular in atomic scale and showed very good quality. CaAl4O7:Tb3+, Ce3+ materials can reduce structure uncertainty of the host and remain typical optical properties of the Tb3+ emitting center.
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Affiliation(s)
- D Jia
- Central Iron and Steel Research Institute, 100081 Beijing
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Jia D, Heersche JN. Insulin-like growth factor-1 and -2 stimulate osteoprogenitor proliferation and differentiation and adipocyte formation in cell populations derived from adult rat bone. Bone 2000; 27:785-94. [PMID: 11113389 DOI: 10.1016/s8756-3282(00)00400-2] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the present study, we test the hypothesis that the stimulation of osteoprogenitor differentiation by the glucocorticoid dexamethasone (Dex) is mediated, at least in part, through components of the insulin-like growth factor (IGF) system. Because it has been suggested that osteoprogenitors and adipocyte progenitors originate from the same precursor cells, and that their differentiation in many systems is reciprocally regulated, the effects of Dex and IGF on adipocyte formation were also evaluated in the same cultures. In view of the presence of IGFs and their binding proteins in serum, we also evaluated to what degree the effects of IGF-1 and IGF-2 on differentiation of osteoblasts and adipocytes were affected by the serum concentration of the culture media. Bone cell populations were isolated from vertebrae of 3-month-old female Wistar rats using an explant culture technique. Osteoprogenitor differentiation was evaluated by a colony assay: Bone-forming osteoblastic colonies (bone nodules) derived from single osteoprogenitors were identified by alkaline phosphatase (ALP) staining and/or staining for mineralized matrix according to the von Kossa technique. Unmineralized nodules and osteoblastic colonies were subsequently identified by their distinctive color and morphology after methylene blue counterstaining. Differentiated adipocytes were identified by Sudan IV staining. IGF-1 and IGF-2 stimulated both osteoprogenitor and adipocyte progenitor differentiation in a dose-dependent pattern. The stimulation of osteoprogenitor differentiation by IGF was not dependent on Dex, but differentiation of adipocytes was. The stimulatory effects of IGF-1 and IGF-2 on osteoprogenitor differentiation were greater in media containing 2.5% fetal bovine serum (FBS) than in media containing 5% or 10% FBS, whereas stimulation of adipocyte formation was greater in media containing 10% FBS. Neutralizing antibody against the type 1 IGF receptor (IGF-1R) partially blocked IGF- and Dex-induced osteoprogenitor differentiation, but did not affect IGF-induced adipocyte formation. This suggests that IGF-stimulated osteoprogenitor differentiation is mediated through IGF-1R, that the stimulation of adipocyte formation by IGF is not, that the stimulatory effects of Dex on osteoprogenitor differentiation are partially mediated through IGF-1R, and that the effects on adipocyte differentiation appear to be mediated through signaling pathways other than the IGF-1R.
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Affiliation(s)
- D Jia
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
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Jia D, Zhang Z, Liu S, Cheng S. [Detection of hyperdiploid in malignant cells in fine-needle aspirates from lung cancer by fluorescence in situ hybridization]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2000; 22:589-91. [PMID: 12903412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To study the numerical abnormality of chromosomes in malignant cells in fine-needle aspirates from lung cancer by fluorescence in situ hybridization (FISH). METHODS 30 fine-needle aspirates from lung cancer (4 from lung tissues, 26 from lymph nodes) were detected by FISH with the centromere DNA probes for chromosome 7, 11, 17 and X. RESULTS In 27 positive fine-needle aspirates the rates of hyperdiploid in chromosome 7, X, 17, and 11 were 81.5% (22/27), 77.8% (21/27), 70.4% (19/27) and 63.0% (17/27), respectively. In 3 negative fine-needle aspirates, the number of chromosomes was normal. CONCLUSIONS (1) Interphase cytogenetic cells analysis of fine-needle aspirates by FISH is feasible and simple; (2) Hyperdiploid in malignant cells in fine-needle aspirates from lung cancer can be used as a biomarker for benign and malignant cells.
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MESH Headings
- Biopsy, Needle
- Chromosomes, Human/genetics
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 17/genetics
- Chromosomes, Human, Pair 7/genetics
- Chromosomes, Human, X/genetics
- DNA Probes
- Diploidy
- Female
- Humans
- In Situ Hybridization, Fluorescence/methods
- Lung Neoplasms/diagnosis
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
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Affiliation(s)
- D Jia
- Department of Clinical Cytology, Cancer Institute, CAMS and PUMC, Beijing 100021, China
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Jia D, Zhang Z, Liu S. [Application of fluorescence in situ hybridization (FISH) in sputum cytologic diagnosis of lung cancer]. Zhonghua Zhong Liu Za Zhi 2000; 22:477-9. [PMID: 11235568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
OBJECTIVE To study the numerical chromosomal abnormalities of cells in sputum from patients with lung cancer by dual-fluorescence in situ hybridization (FISH). METHODS Thirty sputum samples from lung cancer patients were examined by FISH with centromere DNA probes of chromosome 7, 11, 17 and X. RESULTS In 23 positive sputum samples studied, the frequency of hyperdiploid of chromosome 7, 17, X and 11 was 65.2% (15/23), 60.9% (14/23), 52.2% (12/23) and 39.1% (9/23), respectively. Hyperdiploidy of chromosome 7 was found in 4 of 7 sputum samples which were cytologicaly suspicious of cancer cells. CONCLUSION FISH can detect aneuploid malignant cells in sputum and be used as a complementary technique to cytologic diagnosis of lung cancer.
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Affiliation(s)
- D Jia
- Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China
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Jia D, Zhang Z, Liu S, Cheng S. [Study on interphase cytogenetic abnormalities in malignant cells in pleural fluids from lung cancer cases]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2000; 17:244-7. [PMID: 10932006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
OBJECTIVE To study the interphase cytogenetic abnormalities in malignant cells in pleural fluids from lung cancer cases by fluorescence in situ hybridization(FISH) and compare the result of FISH with that of conventional cytology. METHODS Twenty-six pleural fluids from the lung cancer cases were detected by dual-fluorescence in situ hybridization centromere DNA probes of chromosomes 7, 11, 17, and X. RESULTS In 19 positive pleural fluids the rates of hyperdiploid in chromosomes 7, X, 17 and 11 were 16(84.2%), 14(73. 7%), 12(63.2%) and 8(42.1%), respectively. In 2 suspicious malignant pleural fluids, both chromosomes 7 and X showed hyperdiploid. Two cases of hyperplasia from 5 negative specimens also showed gain of chromosome X. Another 3 negative pleural fluids had a normal number of chromosome. CONCLUSION One of the important abnormalities occurred in tumor cells derived from pleural fluid of lung cancer is hyperdiploid, which can be detected by FISH. Therefore, hyperdiploid in pleural fluid cells can be an implication for the malignancy that has not been detected or confirmed by cytological examination.
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Affiliation(s)
- D Jia
- Department of Cytology, Cancer Institute/Hospital, Chinese Academy of Medical Sciences, Beijing, P. R. China.
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Jia D, Yasutake M, Kusama Y, Kishida H, Hayakawa H. [Effect of phenylephrine, endothelin and angiotensin II on reperfusion arrhythmias. A role for Na+/H+ exchanger activation via protein kinase C]. Nihon Ika Daigaku Zasshi 1998; 65:276-83. [PMID: 9755595 DOI: 10.1272/jnms1923.65.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Stimulation of receptors for alpha 1-adrenergic agonist, endothelin (ET) and angiotensin II (AT) activates the cardiac sarcolemmal Na+/H+ exchanger (NHE), perhaps via protein kinase C(PKC)-mediated pathway(s). We tested for the ability of these extracellular stimuli to exacerbate reperfusion arrhythmias and for the possible role of NHE activation and PKC in such phenomena. Isolated rat hearts (n = 12/group) were subjected to dual coronary perfusion. After 15 min of aerobic perfusion, flow to the left coronary bed was reduced to 5% of basal values for 12 min, and the same bed was then reperfused for 5 min. An alpha 1-adrenergic agonist phenylephrine (PE) at 1 or 10 mumol/L, ET at 0.5 or 5nmol/L or AT at 1 or 10mumol/L was infused selectively into the left coronary bed during 12 min of regional low flow ischemia. The incidence of reperfusion-induced ventricular fibrillation (VF) was increased from 17% in control to 33% and 75%* with 1 and 10 mumol/L PE(*p < 0.05 vs control) from 8% in control to 8% and 12% with 0.5 and 5 nmol/L of ET. However, AT had no effect. The selective NHE inhibitor NOE642 at 1 mumol/L, infused concomitantly with 10 mumol/L PE, reversed the proarrhythmic effects of PE; VF incidence was reduced from 67% to 8%*. However, glibenclamide (a blocker for the ATP-sensitive K+ channel) at 1 mumol/L did not affect the proarrhythmic effects of PE. Infusion of a specific PKC inhibitor GF109203X(GF) at 30 or 300 nmol/L, starting from 5 min before ischemia and maintained throughout ischemia concomitantly with 10 mumol/L of PE, was partially effective in reducing VF incidence; which reduced from 75% in control to 42% with 300 nmol/L of GF. These results suggest that, in rat hearts subjected to regional low-flow ischemia and reperfusion, stimulation of alpha 1-adrenergic receptor can exacerbate reperfusion-induced VF, whose mechanism(s) may involve NHE activation. Moreover, PKC activation does not appear to be the sole signaling mechanism for this phenomenon.
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Affiliation(s)
- D Jia
- First Department of Medicine, Nippon Medical School, Tokyo, Japan
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Jia D. Current applications of acupuncture by otorhinolaryngologists. J TRADIT CHIN MED 1993; 13:59-64. [PMID: 8501965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- D Jia
- Chengdu College of Traditional Chinese Medicine, Sichuan Province
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