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Anter A, Orhan E, Ulusoy M, Polat B, Yıldız M, Kumar A, Di Bartolomeo A, Faella E, Passacantando M, Bi J. Lanthanum(III)hydroxide Nanoparticles and Polyethyleneimine-Functionalized Graphene Quantum Dot Nanocomposites in Photosensitive Silicon Heterojunctions. ACS Appl Mater Interfaces 2024. [PMID: 38634639 DOI: 10.1021/acsami.4c02102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
Lanthanides are largely used in optoelectronics as dopants to enhance the physical and optical properties of semiconducting devices. In this study, lanthanum(III)hydroxide nanoparticles (La(OH)3NPs) are used as a dopant of polyethylenimine (PEI)-functionalized nitrogen (N)-doped graphene quantum dots (PEI-NGQDs). The La(OH)3NPs-dopedPEI-NGQDs nanocomposites are prepared from La(NO)3 in a single step by a green novel method and are characterized by Fourier-transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). Deposited over an n-type Si wafer, the La(OH)3NPs-dopedPEI-NGQDs nanocomposites form Schottky diodes. The I-V characteristics and the photoresponse of the diodes are investigated as a function of the illumination intensity in the range 0-110 mW cm-2 and at room temperature. It is found that the rectification ratio and ideality factor of the diode decrease, while the Schottky barrier and series resistance increase with the enhancing illuminations. As a photodetector, the La(OH)3NPs-dopedPEI-NGQDs/n-Si heterojunction exhibits an appreciable responsivity of 3.9 × 10-3 AW-1 under 22 mW cm-2 at -0.3 V bias and a maximum detectivity of 8.7 × 108 Jones under 22 mW cm-2 at -0.5 V. This study introduces the green synthesis and presents the structural, electrical, and optoelectronic properties of La(OH)3NPs-dopedPEI-NGQDs, demonstrating that these nanocomposites can be promising for optoelectronic applications.
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Affiliation(s)
- Aslıhan Anter
- Department of Physics, Gazi University, Ankara 06500, Türkiye
| | - Elif Orhan
- Department of Physics, Gazi University, Ankara 06500, Türkiye
| | - Murat Ulusoy
- Department of Physics, Gazi University, Ankara 06500, Türkiye
| | - Barış Polat
- Industrial Engineering, Ankara Medipol University, Ankara 06050, Türkiye
| | - Mustafa Yıldız
- Department of Chemistry, Çanakkale Onsekiz Mart University, Çanakkale 17100, Türkiye
| | - Arun Kumar
- Department of Physics "E.R. Caianiello", University of Salerno, Fisciano, Salerno 84084, Italy
| | - Antonio Di Bartolomeo
- Department of Physics "E.R. Caianiello", University of Salerno, Fisciano, Salerno 84084, Italy
| | - Enver Faella
- Department of Physical and Chemical Science, University of L'Aquila, Coppito, L'Aquila 67100, Italy
| | - Maurizio Passacantando
- Department of Physical and Chemical Science, University of L'Aquila, Coppito, L'Aquila 67100, Italy
| | - Jinshun Bi
- Institute of Microelectronics, Chinese Acedemy Science (CAS), Beijing 10010, China
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Qi J, Tie K, Ma Y, Huang Y, Gong W, Sun S, Wang Z, Li Z, Huang R, Bi J, Li L, Chen X, Hu W. Achieving Zero-Temperature Coefficient Point Behavior by Defect Passivation for Temperature-Immune Organic Field-Effect Transistors. Adv Mater 2024:e2400089. [PMID: 38498771 DOI: 10.1002/adma.202400089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/13/2024] [Indexed: 03/20/2024]
Abstract
Organic field-effect transistors (OFETs) have broad prospects in biomedical, sensor, and aerospace applications. However, obtaining temperature-immune OFETs is difficult because the electrical properties of organic semiconductors (OSCs) are temperature-sensitive. The zero-temperature coefficient (ZTC) point behavior can be used to achieve a temperature-immune output current; however, it is difficult to achieve in organic devices with thermal activation characteristics, according to the existing ZTC point theory. Here, the Fermi pinning in OSCs is eliminated using the defect passivation strategy, making the Fermi level closer to the tail state at low temperatures; thus threshold voltage (VT) is negatively correlated with temperature. ZTC point behaviors in OFETs are achieved by compensation between VT and mobility at different temperatures to improve its temperature immunity. A temperature-immune output current can be realized in a variable-temperature bias voltage test over 50000 s by biasing the device at the ZTC point. This study provides an effective solution for temperature-immune OFETs and inspiration for their practical application.
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Affiliation(s)
- Jiannan Qi
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Kai Tie
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yue Ma
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yinan Huang
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Wenbing Gong
- School of Physics and Energy, Xuzhou University of Technology, Xuzhou, 221004, China
| | - Shougang Sun
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Zhongwu Wang
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Zhiyun Li
- Vacuum Interconnected Nanotech Workstation (NANO-X), Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215125, China
| | - Rong Huang
- Vacuum Interconnected Nanotech Workstation (NANO-X), Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215125, China
| | - Jinshun Bi
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liqiang Li
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
| | - Xiaosong Chen
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Wenping Hu
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China
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Xu Z, Bi J, Liu M, Zhang Y, Chen B, Zhang Z. TCAD Simulation Studies on Ultra-Low-Power Non-Volatile Memory. Micromachines (Basel) 2023; 14:2207. [PMID: 38138376 PMCID: PMC10745870 DOI: 10.3390/mi14122207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 11/24/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023]
Abstract
Ultra-Low-Power Non-Volatile Memory (UltraRAM), as a promising storage device, has attracted wide research attention from the scientific community. Non-volatile data retention in combination with switching at ≤2.6 V is achieved through the use of the extraordinary 2.1 eV conduction band offsets of InAs/AlSb and a triple-barrier resonant tunnelling structure. Along these lines, in this work, the structure, storage mechanism, and improvement strategies of UltraRAM were systematically investigated to enhance storage window clarity and speed performance. First, the basic structure and working principle of UltraRAM were introduced, and its comparative advantages over traditional memory devices were highlighted. Furthermore, through the validation of the band structure and storage mechanism, the superior performance of UltraRAM, including its low operating voltage and excellent non-volatility, was further demonstrated. To address the issue of the small storage window, an improvement strategy was proposed by reducing the thickness of the channel layer to increase the storage window. The feasibility of this strategy was validated by performing a series of simulation-based experiments. From our analysis, a significant 80% increase in the storage window after thinning the channel layer was demonstrated, providing an important foundation for enhancing the performance of UltraRAM. Additionally, the data storage capability of this strategy was examined under the application of short pulse widths, and a data storage operation with a 10 ns pulse width was successfully achieved. In conclusion, valuable insights into the application of UltraRAM in the field of non-volatile storage were provided. Our work paves the way for further optimizing the memory performance and expanding the functionalities of UltraRAM.
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Affiliation(s)
- Ziming Xu
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; (Z.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinshun Bi
- University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Microelectronics of Tianjin Binhai New Area, Tianjin 300308, China
| | - Mengxin Liu
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; (Z.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Beijing Zhongke New Micro Technology Development Co., Ltd., Beijing 100029, China
| | - Yu Zhang
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100085, China
- Shanxi Key Laboratory of Advanced Semiconductor Optoelectronic Devices and Integrated Systems, Jincheng 048026, China
- Jincheng Research Institute of Opto-Machatronics Industry, Jincheng 048026, China
| | - Baihong Chen
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; (Z.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zijian Zhang
- Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; (Z.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
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Bi J. Computed Tomography-Based Delta-Radiomics for Early Prediction of Short-Term Response to Concurrent Chemoradiotherapy in Patients with NSCLC. Int J Radiat Oncol Biol Phys 2023; 117:e645. [PMID: 37785920 DOI: 10.1016/j.ijrobp.2023.06.2059] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aimed to investigate the possibility of CT-based delta-radiomics for early prediction of short-term response in non-small cell lung cancer (NSCLC) during concurrent chemoradiotherapy and determine the optimal time point for prediction of short-term response. MATERIALS/METHODS Twenty patients with NSCLC who received concurrent chemoradiotherapy were prospectively enrolled. A total of 1210 delta-radiomic features (ΔRFs) were calculated from each planning and follow-up three weekly CTs per patient. The feature selection for ΔRFs was performed using intra-class correlation coefficient (ICC), Pearson correlation, ANOVA-test or Mann-Whitney U-test, and univariate logistic regression. The area under the curve (AUC) of the receiver operating characteristic (ROC) curve was preliminarily used to evaluate the prediction ability of short-term responses (first and third months) at different time points (P < 0.05). RESULTS Of the 1210 ΔRFs for weeks 1-3, 121 common features were retained after ICC and Pearson's correlation. Subsequently, 54 and 58 features at all time points were significantly different between the response group and non-response group for the first and third months, respectively (P< 0.05). Subsequently, 11 and 44 features remained after univariate logistic regression for the first and third months, respectively. Finally, eight ΔRFs that were able to discriminate short-term responses at both the first and third months with statistical accuracy were identified. CONCLUSION CT-based delta-radiomics may potentially provide reasonable biomarkers of short-term response to concurrent chemoradiotherapy for NSCLC, which can help improve clinical decisions for early treatment adaptation.
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Affiliation(s)
- J Bi
- Department of Radiation Oncology, Hubei Cancer Hospital, Wuhan, China
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Wang Z, Ma Y, Guo S, Yuan L, Hu Y, Huang Y, Chen X, Ji D, Bi J, Lei Y, Han C, Li L, Hu W. Suppressing the Intrinsic Photoelectric Response of Organic Semiconductors for Highly-Photostable Organic Transistors. Small 2023:e2304634. [PMID: 37626464 DOI: 10.1002/smll.202304634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/24/2023] [Indexed: 08/27/2023]
Abstract
Suppressing the photoelectric response of organic semiconductors (OSs) is of great significance for improving the operational stability of organic field-effect transistors (OFETs) in light environments, but it is quite challenging because of the great difficulty in precisely modulating exciton dynamics. In this work, photostable OFETs are demonstrated by designing the micro-structure of OSs and introducing an electrical double layer at the OS/polyelectrolyte dielectric interface, in which multiple exciton dynamic processes can be modulated. The generation and dissociation of excitons are depressed due to the small light-absorption area of the microstripe structure and the excellent crystallinity of OSs. At the same time, a highly efficient exciton quenching process is activated by the electrical double layer at the OS/polyelectrolyte dielectric interface. As a result, the OFETs show outstanding tolerance to the light irradiation of up to 306 mW·cm-2 , which far surpasses the solar irradiance value in the atmosphere (≈138 mW·cm-2 ) and achieves the highest photostability ever reported in the literature. The findings promise a general and practicable strategy for the realization of photostable OFETs and organic circuits.
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Affiliation(s)
- Zhongwu Wang
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yining Ma
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Shujing Guo
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Liqian Yuan
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yongxu Hu
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Yinan Huang
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Xiaosong Chen
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Deyang Ji
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
| | - Jinshun Bi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Yong Lei
- Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693, Ilmenau, Germany
| | - Cheng Han
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
| | - Liqiang Li
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
| | - Wenping Hu
- Key Laboratory of Organic Integrated Circuits of Ministry of Education, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Fuzhou, 350207, China
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Wang J, Bi J, Xu Y, Niu G, Liu M, Stempitsky V. Effects of Charge Trapping on Memory Characteristics for HfO 2-Based Ferroelectric Field Effect Transistors. Nanomaterials (Basel) 2023; 13:638. [PMID: 36839006 PMCID: PMC9959327 DOI: 10.3390/nano13040638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/24/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
A full understanding of the impact of charge trapping on the memory window (MW) of HfO2-based ferroelectric field effect transistors (FeFETs) will permit the design of program and erase protocols, which will guide the application of these devices and maximize their useful life. The effects of charge trapping have been studied by changing the parameters of the applied program and erase pulses in a test sequence. With increasing the pulse amplitude and pulse width, the MW increases first and then decreases, a result attributed to the competition between charge trapping (CT) and ferroelectric switching (FS). This interaction between CT and FS is analyzed in detail using a single-pulse technique. In addition, the experimental data show that the conductance modulation characteristics are affected by the CT in the analog synaptic behavior of the FeFET. Finally, a theoretical investigation is performed in Sentaurus TCAD, providing a plausible explanation of the CT effect on the memory characteristics of the FeFET. This work is helpful to the study of the endurance fatigue process caused by the CT effect and to optimizing the analog synaptic behavior of the FeFET.
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Affiliation(s)
- Jianjian Wang
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinshun Bi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yannan Xu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Gang Niu
- School of Electronic Science, Xi’an Jiaotong University, Xi’an 710049, China
| | - Mengxin Liu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
- Beijing Zhongke New Micro Technology Department Co., Ltd., Beijing 100029, China
| | - Viktor Stempitsky
- Department of Microelectronics, Belarusian State University of Informatics and Radioelectronics, 220015 Minsk, Belarus
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Hu Y, Wang Z, Huang Y, Shi R, Wang S, Chen X, Bi J, Xuan Y, Lei Y, Li L, Yang C, Hu W. Deep Ultraviolet Phototransistor Based on Thiophene‐ Fluorobenzene Oligomer with High Mobility and Performance. CHINESE J CHEM 2023. [DOI: 10.1002/cjoc.202200795] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Yongxu Hu
- Shenzhen Key Laboratory of New Information Display and Storage Materials, College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
| | - Zhongwu Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
| | - Yinan Huang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
| | - Rui Shi
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
| | - Shuguang Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
| | - Xiaosong Chen
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
| | - Jinshun Bi
- Institute of Microelectronics Chinese Academy of Sciences Beijing China
- University of Chinese Academy of Sciences Beijing China
| | - Yundong Xuan
- Institute of Microelectronics Chinese Academy of Sciences Beijing China
| | - Yong Lei
- Fachgebiet Angewandte Nanophysik, Institut für Physik & IMN MacroNano, Technische Universität Ilmenau, 98693 Ilmenau Germany
| | - Liqiang Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Fuzhou 350207 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
| | - Chuluo Yang
- Shenzhen Key Laboratory of New Information Display and Storage Materials, College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science Department Tianjin University Tianjin 300072 China
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Fuzhou 350207 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
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Ma Y, Bi J, Wang H, Fan L, Zhao B, Shen L, Liu M. Mechanism of Random Telegraph Noise in 22-nm FDSOI-Based MOSFET at Cryogenic Temperatures. Nanomaterials (Basel) 2022; 12:4344. [PMID: 36500968 PMCID: PMC9741056 DOI: 10.3390/nano12234344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
In the emerging process-based transistors, random telegraph noise (RTN) has become a critical reliability problem. However, the conventional method to analyze RTN properties may not be suitable for the advanced silicon-on-insulator (SOI)-based transistors, such as the fully depleted SOI (FDSOI)-based transistors. In this paper, the mechanism of RTN in a 22-nm FDSOI-based metal-oxide-semiconductor field-effect transistor (MOSFET) is discussed, and an improved approach to analyzing the relationship between the RTN time constants, the trap energy, and the trap depth of the device at cryogenic temperatures is proposed. The cryogenic measurements of RTN in a 22-nm FDSOI-based MOSFET were carried out and analyzed using the improved approach. In this approach, the quantum mechanical effects and diffuse scattering of electrons at the oxide-silicon interface are considered, and the slope of the trap potential determined by the gate voltage relation is assumed to decrease proportionally with temperature as a result of the electron distribution inside the top silicon, per the technology computer-aided design (TCAD) simulations. The fitted results of the improved approach have good consistency with the measured curves at cryogenic temperatures from 10 K to 100 K. The fitted trap depth was 0.13 nm, and the decrease in the fitted correction coefficient of the electron distribution proportionally with temperature is consistent with the aforementioned assumption.
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Affiliation(s)
- Yue Ma
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinshun Bi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hanbin Wang
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linjie Fan
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Biyao Zhao
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lizhi Shen
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengxin Liu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
- Beijing Zhongke New Micro Technology Development Co., Ltd., Beijing 100029, China
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Han G, Bi J, Ma J, Yuan M, Li Y, Pi G, Li Y, Hu D. 146P Stereotactic body radiotherapy plus anlotinib ± toripalimab in untreated oligometastatic brain metastases NSCLC patients. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100258] [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: 12/14/2022]
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Liu T, Xiao W, Luo Z, Bi J, Zhang Y, Wang G, Wang D, Liu X. Regulating on photocatalytic overall water splitting performance of gallium thiophosphate based on transition metal doping: A first-principles study. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2022.112765] [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: 11/05/2022]
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Yan S, Wang J, Lyu C, Bi J, Xin Y, Liu B, Li S, Wang Y, Chen J, Li X, Yang Y, Wu N. 144P Toripalimab plus chemotherapy as neoadjuvant treatment for resectable stage IIB-IIIB NSCLC (RENAISSANCE study): A single-arm, phase II trial. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100256] [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: 12/13/2022]
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Zhao B, Yan Y, Bi J, Xu G, Xu Y, Yang X, Fan L, Liu M. Improved Ferroelectric Properties in Hf 0.5Zr 0.5O 2 Thin Films by Microwave Annealing. Nanomaterials (Basel) 2022; 12:3001. [PMID: 36080036 PMCID: PMC9457976 DOI: 10.3390/nano12173001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/26/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
In the doped hafnia(HfO2)-based films, crystallization annealing is indispensable in forming ferroelectric phases. In this paper, we investigate the annealing effects of TiN/Hf0.5Zr0.5O2/TiN metal-ferroelectric-metal (MFM) capacitors by comparing microwave annealing (MWA) and rapid thermal annealing (RTA) at the same wafer temperature of 500 °C. The twofold remanent polarization (2Pr) of the MWA device is 63 µC/cm2, surpassing that of the RTA device (40 µC/cm2). Furthermore, the wake-up effect is substantially inhibited in the MWA device. The orthorhombic crystalline phase is observed in the annealed HZO films in the MWA and RTA devices, with a reduced TiN and HZO interdiffusion in MWA devices. Moreover, the MFM capacitors subjected to MWA treatment exhibit a lower leakage current, indicating a decreased defect density. This investigation shows the potential of MWA for application in ferroelectric technology due to the improvement in remanent polarization, wake-up effect, and leakage current.
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Affiliation(s)
- Biyao Zhao
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
| | | | - Jinshun Bi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gaobo Xu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yannan Xu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xueqin Yang
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linjie Fan
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mengxin Liu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
- College of Integrated Circuits, University of Chinese Academy of Sciences, Beijing 100049, China
- Beijing Zhongke New Micro Technology Development Co., Ltd., Beijing 100029, China
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13
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Han G, Bi J, Ma J, Yuan M, Li Y, Pi G, Guo L, Li Y, Hu D. 115TiP Stereotactic body radiotherapy (SBRT) plus anlotinib with or without toripalimab in driver mutation-negative non-small cell lung cancer (NSCLC) patients with untreated brain oligometastatic metastases: A prospective, single-center, phase Ib study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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14
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Li J, Bi J, Zhang P, Wang Z, Zhong Y, Xu S, Wang L, Li B. Functions of a C-type lectin with a single carbohydrate-recognition domain in the innate immunity and movement of the red flour beetle, Tribolium castaneum. Insect Mol Biol 2021; 30:90-101. [PMID: 33145845 DOI: 10.1111/imb.12680] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 07/28/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
C-type lectins (CTLs) are a superfamily of proteins found in almost all vertebrates and invertebrates. They play an important role in innate immune defences, development and epidermal structure. Here, a CTL with one carbohydrate-recognition domain containing a highly conserved Gln-Pro-Asp (QPD) motif was identified in Tribolium castaneum and given the name TcCTL5. Spatiotemporal analyses showed that Tcctl5 was highly expressed in the late pupa stage and mainly existed in the central nervous system and haemolymph. The transcript level of Tcctl5 was prominently induced after bacterial infection. Recombinant TcCTL5 proteins (rTcCTL5) were found to bind to lipopolysaccharide, peptidoglycan and tested bacteria and induce microbial agglutination in the presence of Ca2+ . Interestingly, when Tcctl5 was knocked down, the transcript level of antimicrobial peptides (AMPs) (attacin1, defensins3, coleoptericin1 and cecropins3) was prominently downregulated after induction with Gram-negative Escherichia coli. More interestingly, Tcctl5 was knocked down, leading to increased mortality and loss of locomotor activity, which exhibited less travel distances among early adults. These results demonstrate that Tcctl5 plays an important role in the innate immune reaction and the movement of T. castaneum. Thus, it may represent an alternative molecular target for pest control and thus reduce the use of pesticides in agricultural production.
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Affiliation(s)
- J Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Bi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - P Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Z Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Y Zhong
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - S Xu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - L Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - B Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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15
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Fan L, Bi J, Xi K, Yan G. Investigation of Radiation Effects on FD-SOI Hall Sensors by TCAD Simulations. Sensors (Basel) 2020; 20:s20143946. [PMID: 32708539 PMCID: PMC7412317 DOI: 10.3390/s20143946] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/11/2020] [Accepted: 07/12/2020] [Indexed: 11/29/2022]
Abstract
This work investigates the responses of the fully-depleted silicon-on-insulator (FD-SOI) Hall sensors to the three main types of irradiation ionization effects, including the total ionizing dose (TID), transient dose rate (TDR), and single event transient (SET) effects. Via 3D technology computer aided design (TCAD) simulations with insulator fixed charge, radiation, heavy ion, and galvanomagnetic transport models, the performances of the transient current, Hall voltage, sensitivity, efficiency, and offset voltage have been evaluated. For the TID effect, the Hall voltage and sensitivity of the sensor increase after irradiation, while the efficiency and offset voltage decrease. As for TDR and SET effects, when the energy deposited on the sensor during a nuclear explosion or heavy ion injection is small, the transient Hall voltage of the off-state sensor first decreases and then returns to the initial value. However, if the energy deposition is large, the transient Hall voltage first decreases, then increases to a peak value and decreases to a fixed value. The physical mechanisms that produce different trends in the transient Hall voltage have been analyzed in detail.
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Affiliation(s)
- Linjie Fan
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China; (L.F.); (K.X.); (G.Y.)
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinshun Bi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China; (L.F.); (K.X.); (G.Y.)
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: ; Tel.: +86-10-82995940
| | - Kai Xi
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China; (L.F.); (K.X.); (G.Y.)
| | - Gangping Yan
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China; (L.F.); (K.X.); (G.Y.)
- School of Microelectronics, University of Chinese Academy of Sciences, Beijing 100049, China
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Zhao S, Shi C, Hu H, Li Z, Xiao G, Yang Q, Sun P, Cheng L, Niu W, Bi J, Yue Z. ISFET and Dex-AgNPs based portable sensor for reusable and real-time determinations of concanavalin A and glucose on smartphone. Biosens Bioelectron 2020; 151:111962. [PMID: 31999575 DOI: 10.1016/j.bios.2019.111962] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/08/2019] [Accepted: 12/11/2019] [Indexed: 02/06/2023]
Abstract
In this paper, a portable real-time sensing device was built for Concanavalin A (Con A) and glucose detection using a smartphone. The ion-sensitive field-effect transistor (ISFET) functioning at a low working point was selected as a small-size, low-power transducer, and dextran-capped silver nanoparticles (Dex-AgNPs) served as sensitive nanoprobes on the ISFET gate. Using the affinity between Con A and carbohydrates, Con A can be captured, and thus directly detected by the ISFET/Dex-AgNPs unit; then glucose can be determined indirectly by removing Con A from the ISFET/Dex-AgNPs/Con A unit via competition with dextran. The mechanism of this competition does less harm to the sensor, allows the reusability of the sensing device, and overcomes the Debye screening of the FET device in saline solutions. Powered by a button cell, the handheld device attains excellent Con A (0.16 ng mL-1) and glucose (10 nM) detection limit, and can practically be used for at least 20 days.
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Affiliation(s)
- Shuang Zhao
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Cong Shi
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Hongyang Hu
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China; Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 10010, PR China
| | - Zhengping Li
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Gang Xiao
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Qiaochun Yang
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Peng Sun
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Linyang Cheng
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Wencheng Niu
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China
| | - Jinshun Bi
- Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 10010, PR China.
| | - Zhao Yue
- Department of Microelectronics, Nankai University, Tianjin, 300350, PR China; Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin, 300350, PR China.
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Liu Y, Liu XM, Bi J, Yu S, Yang N, Song B, Chen X. Cell migration and osteo/odontogenesis stimulation of iRoot FS as a potential apical barrier material in apexification. Int Endod J 2019; 53:467-477. [PMID: 31622505 DOI: 10.1111/iej.13237] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 05/14/2019] [Revised: 10/06/2019] [Accepted: 10/14/2019] [Indexed: 12/11/2022]
Abstract
AIM To investigate the in vitro biological effects of a nanoparticle bioceramic material, iRoot Fast Set root repair material (iRoot FS), on the proliferation, migration and osteo/odontogenic differentiation of human stem cells from the apical papilla (hSCAP), and to further explore the mechanism involved in osteo/odontogenic induction of iRoot FS. METHODOLOGY hSCAP were isolated and characterized in vitro. iRoot FS conditioned medium were prepared and used to treat hSCAP, while using mineral trioxide aggregate (MTA) conditioned medium as the positive control and regular medium as the negative control. MTT assay and BrdU labelling assay were performed to determine cell proliferation. Wound healing assay and transwell assay were conducted to evaluate cell migration. The osteo/odontogenic differentiation of hSCAP was evaluated by qPCR, Western blot and Alizarin red S staining. Wnt inhibitor was used for downregulating the expression level of β-catenin of hSCAP. RESULTS The cell proliferation of hSACP in the iRoot FS group was not significantly different compared with the control groups. The cell migration of hSCAP in the iRoot FS group was significantly increased than the MTA and negative control groups (P < 0.01). The expression levels of osteo/odontogenic markers and mineralization nodule formation of hSCAP in the iRoot FS group were significantly elevated (P < 0.01). Furthermore, iRoot FS enhanced the osteo/odontogenic differentiation of hSCAP by activating Wnt/β-catenin signalling. CONCLUSIONS iRoot FS promoted the cell migration of hSCAP and enhanced their oseto/odontogenesis potential via the Wnt/β-catenin pathway without cytotoxicity. iRoot FS had satisfactory biological properties and has potential to be used as an apical barrier in apexification or as a coronal sealing material in regenerative endodontic treatment.
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Affiliation(s)
- Y Liu
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
| | - X M Liu
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
| | - J Bi
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
| | - S Yu
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
| | - N Yang
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
| | - B Song
- School of Dentistry, Cardiff University, Cardiff, UK
| | - X Chen
- Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China.,Liaoning Province Key Laboratory of Oral Disease, Shenyang, China
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Bai L, Yang HY, Cai WH, Bi J, Luo H, Yang MD. [Analysis of occupational health surveillance of workers exposed to benzenemethylbenzene and dimethylbenzene]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:473-475. [PMID: 31256537 DOI: 10.3760/cma.j.issn.1001-9391.2019.06.019] [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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Bi J, Feng F, Li J, Mao J, Ning M, Song X, Xie J, Tang J, Li B. A C-type lectin with a single carbohydrate-recognition domain involved in the innate immune response of Tribolium castaneum. Insect Mol Biol 2019; 28:649-661. [PMID: 30843264 DOI: 10.1111/imb.12582] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
C-type lectins are one of the pattern-recognition proteins involved in innate immunity in invertebrates. Although there are 16 C-type lectin genes that have been identified in the genome of Tribolium castaneum, their functions and mechanisms in innate immunity remain unknown. Here, we identified one C-type lectin orthologue, TcCTL6 (TC003708), by sequencing random clones from the cDNA library of the coleopteran beetle, T. castaneum. TcCTL6 contains a 654 bp open reading frame encoding a protein of 217 amino acids that includes a single carbohydrate-recognition domain. The expression of TcCTL6 was significantly induced by Escherichia coli, Staphylococcus aureus and stimulation with carbohydrates, including lipopolysaccharide and peptidoglycan. A binding assay suggested that the recombinant TcCTL6 not only bound to lipopolysaccharide and peptidoglycan but also bound to Gram-positive (S. aureus, Bacillus subtilis and Bacillus thuringiensis) and Gram-negative bacteria (E. coli and Pseudomonas aeruginosa) in the presence of calcium ions. Furthermore, when TcCTL6 was knocked down by RNA interference, four antimicrobial peptides (attacin1, attacin2, coleoptericin1 and coleoptericin2) were significantly decreased. These results demonstrate that TcCTL6 plays a vital role in the immune response towards pathogen infection by influencing the expression of antimicrobial peptides and the agglutination of bacteria in the presence of calcium ions in T. castaneum.
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Affiliation(s)
- J Bi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - F Feng
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Mao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - M Ning
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - X Song
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Xie
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - J Tang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - B Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Sun JS, Tian QH, Zhao L, Wang JF, Bi J, Shi MS. Genetic Polymorphisms of 18 Autosomal STR loci in Changsha Han Population. Fa Yi Xue Za Zhi 2018; 34:526-531. [PMID: 30468057 DOI: 10.12116/j.issn.1004-5619.2018.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To investigate the genetic polymorphisms of 18 autosomal short tandem repeats (STR) loci in Changsha Han population, and explore the population genetic relationships and evaluate its application value in forensic medicine. METHODS The DNA of 2 004 unrelated individuals in Changsha Han population were amplified using Goldeneye®DNA ID System BASIC, and the PCR products were analyzed by electrophoresis using 3130xl genetic analyzer. The fragment sizes of alleles were analyzed subsequently by GeneMapper® ID v3.2. The frequency data and forensic genetic parameters [observed heterozygosity (Ho), expected heterozygosity (He), power of discrimination (DP) and polymorphic information content (PIC)] of 18 STR loci were statistically analyzed. Total probability of discrimination (TDP), probability of exclusion in trio cases (PEtrio) and probability of exclusion in duo cases (PEduo) were calculated by Cervus 3.0. Hardy-Weinberg equilibrium and linkage disequilibrium of the loci were detected by Arlequin v3.5. The results were compared with the available data of other populations from different races and regions. RESULTS The power of discrimination (DP), and the polymorphic information content (PIC) of each locus of Changsha Han population ranged from 0.783 6 to 0.987 9 and 0.549 4 to 0.914 5, respectively. The TDP, cumulative probability of exclusion in trio cases (CPEtrio) and cumulative probability of exclusion in duo cases (CPEduo) were 0.999 999 999 999 999 999 999 865 2, 0.999 999 979 and 0.999 988 325, respectively. According to the Nei's DA genetic distance, the genetic distance between Changsha Han and Hunan Han populations was the smallest (0.014 1), while it was the largest (0.041 8) between Changsha Han and Xinjiang Kazakh populations. CONCLUSIONS The 18 STR loci shows abundant genetic polymorphisms in Changsha Han population. The study of genetic diversity among different populations has an important meaning for the research of their origins, migrations and their relationships.
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Affiliation(s)
- J S Sun
- Institute of Forensic Science, Changsha Public Security Bureau, Changsha 410000, China
| | - Q H Tian
- Key Laboratory of Evidence Science, Ministry of Education, China University of Political Science and Law, Beijing 100088, China
| | - L Zhao
- Institute of Forensic Science, Changsha Public Security Bureau, Changsha 410000, China
| | - J F Wang
- Key Laboratory of Evidence Science, Ministry of Education, China University of Political Science and Law, Beijing 100088, China
| | - J Bi
- Beijing Mingzheng Forensic Identification Center, Beijing 100191, China
| | - M S Shi
- Key Laboratory of Evidence Science, Ministry of Education, China University of Political Science and Law, Beijing 100088, China
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Bi J, Chang JJ, Yu CY. Detection and Analysis of 12 Suspected Amelogenin Allelic Loss Cases. Fa Yi Xue Za Zhi 2018; 34:396-400. [PMID: 30465406 DOI: 10.12116/j.issn.1004-5619.2018.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To observe and analyse the Amelogenin allelic loss in parent-child identification cases, and to explore the type and mechanism of Amelogenin allelic loss as well as its influence on gender identification and solutions. METHODS After the detection by SiFaSTR™ 23plex DNA identification system, samples had the characteristics of the peak area of Amelogenin X was the same as the one of adjacent heterozygote or lower than one half of adjacent homozygote in females while Amelogenin X loss was observed in males were selected. X chromosome STR (X-STR) typing and Amelogenin X sequencing were performed. The samples with Amelogenin Y loss in males were confirmed by the detection of Y chromosome STR typing and sex-determining region of Y (SRY). The type and rate of Amelogenin allelic loss were confirmed and calculated, and the mechanism and influence of this variation were also analysed. RESULTS Amelogenin X allelic loss was observed in one male sample, the mutation in primer-binding region was confirmed by sequencing. The suspected Amelogenin X allelic loss was observed in four female samples, but the mutation in primer-binding region was confirmed by sequencing in only one sample. Amelogenin Y allelic loss was observed in seven male samples, SRY positive cases was detected in five of them, and two were SRY negative. Y-STR type was detected in four cases of the five SRY positive cases, which was not detected in the two SRY negative cases. The rate of Amelogenin allelic loss was about 0.029%. CONCLUSIONS Amelogenin X allelic loss does not affect the gender identification, but Amelogenin Y allelic loss may cause wrong gender identification. Thus, Y-STR or SRY should be detected for gender confirmation. When Y-STR genotypes are not detected in a "male" whose SRY detection is also negative, then the chromosome karyotype analysis and sex differentiation related genes test should be taken to further confirm the gender.
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Affiliation(s)
- J Bi
- Beijing Mingzheng Forensic Identification Center, Beijing 100070, China
| | - J J Chang
- Institute of Forensic Science, Ministry of Public Security, PRC, Beijing 110000, China
| | - C Y Yu
- Beijing Mingzheng Forensic Identification Center, Beijing 100070, China
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Zheng Y, Bi J, Hou MY, Shen W, Zhang W, Ai H, Yu XQ, Wang YF. Ocnus is essential for male germ cell development in Drosophila melanogaster. Insect Mol Biol 2018; 27:545-555. [PMID: 29732657 DOI: 10.1111/imb.12393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ocnus (ocn) gene encodes a protein abundant in the testes, implying its role in testis development. When Drosophila melanogaster is infected with the endosymbiont wMel Wolbachia, which affects the spermatogenesis of its hosts, ocn is downregulated in the third-instar larval testes, suggesting a role of ocn in spermatogenesis. In this study, we knocked down ocn in the testes and found that the hatch rates of embryos derived from ocn-knockdown males were significantly decreased, and 84.38% of the testes were much smaller in comparison to controls. Analysis of the smaller testes showed no germ cells but they had an extended hub. Using RNA-sequencing (RNA-Seq), we identified 69 genes with at least a twofold change (q-value < 5%) in their expression after ocn knockdown; of these, eight testes-specific and three reproduction-related genes were verified to be significantly downregulated using quantitative reverse transcription-PCR. Three genes (orientation disruptor, p24-2 and CG13541) were also significantly downregulated in the presence of Wolbachia. Furthermore, 98 genes were not expressed when ocn was knocked down in testes. These results suggest that ocn plays a crucial role in male germ cell development in Drosophila, possibly by regulating the expression of multiple spermatogenesis-related genes. Our data provide important information to help understand the molecular regulatory mechanisms underlying spermatogenesis.
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Affiliation(s)
- Y Zheng
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - J Bi
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - M-Y Hou
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - W Shen
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - W Zhang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - H Ai
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - X-Q Yu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
- School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, USA
| | - Y-F Wang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
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Bi J, Liu Y, Liu XM, Jiang LM, Chen X. iRoot FM exerts an antibacterial effect on Porphyromonas endodontalis
and improves the properties of stem cells from the apical papilla. Int Endod J 2018. [DOI: 10.1111/iej.12923] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- J. Bi
- Department of Paediatric Dentistry; School of Stomatology; China Medical University; Shenyang China
- Liaoning Province Key Laboratory of Oral Disease; Shenyang China
| | - Y. Liu
- Department of Paediatric Dentistry; School of Stomatology; China Medical University; Shenyang China
- Liaoning Province Key Laboratory of Oral Disease; Shenyang China
| | - X. M. Liu
- Department of Paediatric Dentistry; School of Stomatology; China Medical University; Shenyang China
- Liaoning Province Key Laboratory of Oral Disease; Shenyang China
| | - L. M. Jiang
- Department of Paediatric Dentistry; School of Stomatology; China Medical University; Shenyang China
- Liaoning Province Key Laboratory of Oral Disease; Shenyang China
| | - X. Chen
- Department of Paediatric Dentistry; School of Stomatology; China Medical University; Shenyang China
- Liaoning Province Key Laboratory of Oral Disease; Shenyang China
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Li Z, Zhang J, Li Y, Zhao S, Zhang P, Zhang Y, Bi J, Liu G, Yue Z. Carbon dots based photoelectrochemical sensors for ultrasensitive detection of glutathione and its applications in probing of myocardial infarction. Biosens Bioelectron 2018; 99:251-258. [DOI: 10.1016/j.bios.2017.07.065] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 07/16/2017] [Accepted: 07/26/2017] [Indexed: 10/19/2022]
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Han G, Feng J, Peng M, Verma V, Bi J, Song Q. EGFR Overexpression and Mutations Lead to a Change in Biological Characteristics of Human Lung Adenocarcinoma Cells. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bi J, Chang JJ, Li MX, Yu CY. [Mutation Analysis of 19 STR Loci in 20 723 Cases of Paternity Testing]. Fa Yi Xue Za Zhi 2017; 33:263-266. [PMID: 29230991 DOI: 10.3969/j.issn.1004-5619.2017.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To observe and analyze the confirmed cases of paternity testing, and to explore the mutation rules of STR loci. METHODS The mutant STR loci were screened from 20 723 confirmed cases of paternity testing by Goldeneye 20A system.The mutation rates, and the sources, fragment length, steps and increased or decreased repeat sequences of mutant alleles were counted for the analysis of the characteristics of mutation-related factors. RESULTS A total of 548 mutations were found on 19 STR loci, and 557 mutation events were observed. The loci mutation rate was 0.07‰-2.23‰. The ratio of paternal to maternal mutant events was 3.06:1. One step mutation was the main mutation, and the number of the increased repeat sequences was almost the same as the decreased repeat sequences. The repeat sequences were more likely to decrease in two steps mutation and above. Mutation mainly occurred in the medium allele, and the number of the increased repeat sequences was almost the same as the decreased repeat sequences. In long allele mutations, the decreased repeat sequences were significantly more than the increased repeat sequences. The number of the increased repeat sequences was almost the same as the decreased repeat sequences in paternal mutation, while the decreased repeat sequences were more than the increased in maternal mutation. CONCLUSIONS There are significant differences in the mutation rate of each locus. When one or two loci do not conform to the genetic law, other detection system should be added, and PI value should be calculated combined with the information of the mutate STR loci in order to further clarify the identification opinions.
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Affiliation(s)
- J Bi
- Beijing Mingzheng Forensic Identification Center, Beijing 100191, China
| | - J J Chang
- Institute of Forensic Science, Ministry of Public Security, PRC, Beijing 110000, China
| | - M X Li
- Beijing Mingzheng Forensic Identification Center, Beijing 100191, China
| | - C Y Yu
- Beijing Mingzheng Forensic Identification Center, Beijing 100191, China
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Zhou ZY, Fu Y, Bi J, Jiang A, Dai JR. [Study on the recent application of ear correction model in children with congenital auricular deformity]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:949-952. [PMID: 29798419 DOI: 10.13201/j.issn.1001-1781.2017.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/12/2022]
Abstract
Objective:To study the short-term effect of Earwell ear correction model on congenital auricular deformity in children. Method:Selected 38 children with ear malformation, a total of 42 ears, born at the age of 7 days to 176 days, and the average age was 62.40 days, and all of patients were used the U.S. Earwell correction model for correction. Result:Final auricular morphologic results were classified as excellent (normal shape), good (nearnormal shape), and poor (slight or no improvement). And the patients were divided into group 1 (neonatal period), group 2 (28-90 days) and group 3 (more than 90 days) according to age, after using the Earwell ear correction device, the result which evaluated excellent are 100.00%, 89.47% and 72.73% respectively, and the average correction times are 16.75 days, 26.26 days and 38.91 days respectively, the ratio of complications are 0, 73.68% and 100.00% respectively. Conclusion:The effection of Earwell ear correction model is significant for the correction of children with congenital auricular deformity , the earlier treatment cause the better result, the shorter of the correcting time , and the lower of the complication rate.
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Affiliation(s)
- Z Y Zhou
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - Y Fu
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J Bi
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - A Jiang
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J R Dai
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
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Javaid M, Bi J, Biddle C, Tsai CM, Häkkinen L, Kim H. Platelet factor 4 upregulates matrix metalloproteinase-1 production in gingival fibroblasts. J Periodontal Res 2017; 52:787-792. [PMID: 28256034 DOI: 10.1111/jre.12448] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is a highly prevalent chronic inflammatory disease that causes tooth loss, morbidity and confers an increased risk for systemic disease. Tissue destruction during periodontitis is due in large part to collagen-degrading matrix metalloproteinases (MMPs) released by resident cells of the periodontium in response to proinflammatory cytokines. Platelets are immune-competent blood cells with a newly recognized role in chronic inflammation; however, their role in the pathogenesis of periodontitis is undefined. Consequently, the objective of this study was to assess the effect of platelet factor 4 (PF4), a major platelet-derived cytokine, on MMP-1 (collagenase) expression in human gingival fibroblasts (HGFs). MATERIAL AND METHODS HGFs were cultured in the presence or absence of recombinant PF4. Pro-MMP-1 secretion was quantified by enzyme-linked immunosorbent assay analysis of the cell culture supernatants. MMP-1 transcription was quantified by real-time polymerase chain reaction. Regulation of MMP-1 production by the p44/42 MAP kinase (MAPK) signaling pathway was examined in the presence or absence of PF4. RESULTS Exposure to PF4 caused a ~ 2-3-fold increase in MMP-1 transcription and secretion from cultured HGFs. PF4 treatment also enhanced phosphorylation of p44/42 MAPK, which has been previously shown to induce MMP-1 expression in fibroblasts. Blockade of p44/42 MAPK signaling with the cell-permeant inhibitors PD98059 and PD184352 abrogated PF4-induced pro-MMP-1 transcription upregulation and release from cultured HGFs. CONCLUSION We conclude that PF4 upregulates MMP-1 expression in HGFs in a p44/42 MAPK-dependent manner. These findings point to a previously unidentified role for platelets in the pathogenesis of periodontal diseases.
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Affiliation(s)
- M Javaid
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - J Bi
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - C Biddle
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - C M Tsai
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - L Häkkinen
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada
| | - H Kim
- Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.,Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada.,Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
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Wu S, Wu F, Ding Y, Hou J, Bi J, Zhang Z. Advanced parental age and autism risk in children: a systematic review and meta-analysis. Acta Psychiatr Scand 2017; 135:29-41. [PMID: 27858958 DOI: 10.1111/acps.12666] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/18/2016] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Advanced parental age has raised additional concern as a risk factor of autism. We conducted a meta-analysis of observational studies investigating the association between advanced parental age and risk of autism. METHOD PubMed, EMBASE, and Web of Science were searched for reports published up to November 11, 2015. Risk estimates from individual studies were pooled using random-effects models. RESULTS Twenty-seven studies were included in the meta-analysis. Compared with the reference points, the lowest parental age category was associated with a reduced risk of autism in the offspring, with adjusted odds ratios (ORs) 0.89 (95% confidence intervals [CIs] 0.75-1.06) and 0.81 (95% CI 0.73-0.89) for mother and father, respectively, and the highest parental age category was associated with an increased risk of autism in the offspring, with adjusted ORs 1.41 (95% CI 1.29-1.55) and 1.55 (95% CI 1.39-1.73) for mother and father respectively. Dose-response meta-analysis indicated that an increase of 10 years in maternal and paternal age was associated with an 18% and 21% higher risk of autism. CONCLUSION Advanced parental age was associated with an increased risk of autism in the offspring. More mechanistic studies are needed to further explain this positive association.
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Affiliation(s)
- S Wu
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - F Wu
- Department of General Surgery, The 309th Hospital of PLA, Beijing, China
| | - Y Ding
- Department of Medical Microbiology and Parasitology, Second Military Medical University, Shanghai, China
| | - J Hou
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - J Bi
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Z Zhang
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
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Jiang Z, Sun J, Marjani S, Dong H, Zheng X, Bi J, Chen J, Tian X. 130 A CATALOG OF REFERENCE GENES WITH HIGH, MEDIUM, AND LOW LEVELS OF EXPRESSION DURING BOVINE IN VIVO PRE-IMPLANTATION DEVELOPMENT. Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1ab130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Appropriate reference genes for accurate normalization in RT-PCR are essential for the study of gene expression. Ideal reference genes should not only have stable expression across stages of embryo development, but also be expressed at comparable levels to the target genes. Using RNA-seq data from in vivo-produced bovine oocytes and embryos from the 2-cell to blastocyst stage (Jiang et al., 2014 BMC Genomics 15, 756), we tried to establish a catalogue of all reference genes for RT-PCR analysis. One-way ANOVA generated 4055 genes that did not differ across stages. To reduce this list, we used the entire RNA-seq data set and first removed genes with a FPKM (fragments per kilobase of transcript per million mapped reads) of <1, and then rescaled each gene’s expression values within a range of 0 to 1. We subsequently calculated the expression variance for each gene across all stages. By assuming that the calculated variances follow a Gaussian distribution and that the majority of the genes do not have a stable expression level, a gene was classified as a reference if its variance significantly deviated (P < 0.05) from these assumptions. We identified 346 potential reference genes, all of which were among the candidates from the ANOVA analysis. We arbitrarily assigned genes in this list to high (FPKM ≥ 100), medium (10 < FPKM < 100), and low expression levels (FPKM ≤ 10), and 37, 154, and 155 genes, respectively, fell into these groups. Surprisingly, none of the commonly used reference genes, such as GAPDH, PPIA, ACTB, PRL15, GUSB, and H3F2A, were identified as being stably expressed across in vivo development. This is consistent with findings of prior RT-PCR studies (Robert et al. 2002 Biol. Reprod. 67, 1465–1472; Ross et al. 2010 Cell Reprogram. 12, 709–717). The following gene ontology terms were significantly enriched for the 346 genes: cell cycle, translation, transport, chromatin, cell division, and metabolic process, indicating that the early embryos maintained constant levels of genes involved in fundamental biological functions. Finally, we performed RT-PCR to validate the RNA-seq results using different bovine in vivo-derived oocytes and embryos (n = 3/stage). We successfully validated 10 selected genes, including those in the high (CS, PGD, and ACTR3), medium (CCT5, MRPL47, COG2, CRT9, and HELLS), and low expression groups (CDC23 and TTF1). In conclusion, we recommend the use of reference genes that are expressed at comparable levels to target genes. This study offers a useful resource to aid in the appropriate selection of reference genes, which will improve the accuracy of quantitative gene expression analyses across bovine embryo pre-implantation development.
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Bi J, Lei Q, Wan X, Wang X. MON-P040: Partial Enteral Nutrition Improves SIGA Level Via Activating JAK1/STAT6 Signaling in Mice. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30674-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lei Q, Bi J, Wang X, Li N. MON-P042: Glucagon-Like Peptide-2 Protects Impaired Intestinal Mucosal Barriers in a Mouse Model of Total Parenteral Nutrition. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30676-8] [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]
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Jiang B, Shen RF, Bi J, Tian XS, Hinchliffe T, Xia Y. Catalpol: a potential therapeutic for neurodegenerative diseases. Curr Med Chem 2016; 22:1278-91. [PMID: 25620103 DOI: 10.2174/0929867322666150114151720] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 01/05/2015] [Accepted: 01/08/2015] [Indexed: 11/22/2022]
Abstract
Neurodegenerative disorders, e.g., Alzheimer's disease (AD) and Parkinson's disease (PD) are characterized by the progressive loss of neurons and subsequent cognitive decline. They are mainly found in older populations. Due to increasing life expectancies, the toll inflicted upon society by these disorders continues to become heavier and more prominent. Despite extensive research, however, the exact etiology of these disorders is still unknown, though the pathophysiological mechanisms have been attributed to oxidative, inflammatory and apoptotic injury in the brain. Moreover, there is currently no promising therapeutic agent against these neurodegenerative changes. Catalpol, an iridoid glucoside contained richly in the roots of the small flowering plant species Rehmannia glutinosa Libosch, has been shown to have antioxidation, anti-inflammation, anti-apoptosis and other neuroprotective properties and plays a role in neuroprotection against hypoxic/ischemic injury, AD and PD in both in vivo and in vitro models. It may therefore represent a potential therapeutical agent for the treatment of hypoxic/ischemic injury and neurodegenerative diseases. Based on our studies and those of others in the literature, here we comprehensively review the role of Catalpol in neuroprotection against pathological conditions, especially in neurodegenerative states and the potential mechanisms involved.
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Affiliation(s)
- B Jiang
- School of Biological Science & Technology, Dalian University of Technology, Dalian, Liaoning 116024, China.
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Bi J, Koivisto L, Owen G, Huang P, Wang Z, Shen Y, Bi L, Rokka A, Haapasalo M, Heino J, Häkkinen L, Larjava H. Epithelial Microvesicles Promote an Inflammatory Phenotype in Fibroblasts. J Dent Res 2016; 95:680-8. [DOI: 10.1177/0022034516633172] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Microvesicles (MVs) are extracellular vesicles secreted by various cell types that are involved in intercellular communication. We hypothesized that in human periodontal disease, the pocket epithelium releases MVs, which then modulate gene expression in the underlying fibroblasts to control periodontal inflammation. MVs were isolated from culture medium of gingival epithelial cells (GECs) treated with oral bacterial biofilm extract or left untreated. Biofilm treatment significantly increased MV release from the GECs. Mass spectrometry of GEC-MVs identified a total of 2,173 proteins, of which about 80% were detected in MVs from both control and biofilm-treated GECs. Among 80 signature genes of human gingival fibroblasts, 20 were significantly regulated ( P < 0.05) by MVs from control and biofilm-treated GECs in a similar manner. Matrix metalloproteinase 1 and 3 and interleukin 6 and 8 showed the strongest regulation at the mRNA and protein levels. Several cellular signaling pathways were activated by GEC-MVs in human gingival fibroblasts, including Smad and mitogen-activated protein kinase–associated pathways ERK1/2, JNK, and p38. However, ERK1/2 signaling dominated in the MV-induced gene expression changes. The results demonstrate that GEC-MVs have a strong regulatory effect on the expression of fibroblast genes associated with inflammation and matrix degradation and that bacterial biofilm stimulates the generation of GEC-MVs. This suggests that bacterial biofilms can contribute to the initiation and progression of periodontal disease by promoting a tissue-destructive phenotype in gingival fibroblasts via the enhanced secretion of epithelial MVs.
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Affiliation(s)
- J. Bi
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - L. Koivisto
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - G. Owen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - P. Huang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Z. Wang
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - Y. Shen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - L. Bi
- Department of Stomatology, The Fourth Affiliated Hospital, Harbin Medical University, Harbin, China
| | - A. Rokka
- Turku Centre for Biotechnology, University of Turku and Åbo Akademi University, Turku, Finland
| | - M. Haapasalo
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - J. Heino
- Department of Biochemistry, University of Turku, Turku, Finland
| | - L. Häkkinen
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
| | - H.S. Larjava
- Faculty of Dentistry, Department of Oral Biological and Medical Sciences, The University of British Columbia, Vancouver, Canada
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Cui X, Dini S, Dai S, Bi J, Binder BJ, Green JEF, Zhang H. A mechanistic study on tumour spheroid formation in thermosensitive hydrogels: experiments and mathematical modelling. RSC Adv 2016. [DOI: 10.1039/c6ra11699j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Thermo-reversible microgels to culture and harvest uniform-sized tumour spheroids with a narrow size-distribution.
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Affiliation(s)
- X. Cui
- School of Chemical Engineering
- University of Adelaide
- Adelaide
- Australia
| | - S. Dini
- School of Mathematical Sciences
- University of Adelaide
- Adelaide
- Australia
| | - S. Dai
- School of Chemical Engineering
- University of Adelaide
- Adelaide
- Australia
| | - J. Bi
- School of Chemical Engineering
- University of Adelaide
- Adelaide
- Australia
| | - B. J. Binder
- School of Mathematical Sciences
- University of Adelaide
- Adelaide
- Australia
| | - J. E. F. Green
- School of Mathematical Sciences
- University of Adelaide
- Adelaide
- Australia
| | - H. Zhang
- School of Chemical Engineering
- University of Adelaide
- Adelaide
- Australia
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Hiscock R, Bi J, Liu M, Asikainen A, Dobbie F, Bauld L, Mudu P, Martuzzi M, Sabel C. Socioeconomic inequalities and wellbeing in England, Finland and China. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku161.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chen XY, Hou PF, Bi J, Ying CM. Detection of human cytomegalovirus DNA in various blood components after liver transplantation. ACTA ACUST UNITED AC 2014; 47:340-4. [PMID: 24714815 PMCID: PMC4075299 DOI: 10.1590/1414-431x20133353] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [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: 07/18/2013] [Accepted: 12/13/2013] [Indexed: 11/30/2022]
Abstract
The quantification of human cytomegalovirus (HCMV DNA) by real-time PCR is currently
a primary option for laboratory diagnosis of HCMV infection. However, the optimal
sample material remains controversial due to the use of different PCR assays. To
explore the best blood component for HCMV DNA surveillance after liver
transplantation, whole blood (WB), serum (SE), and plasma (PL) specimens were
collected simultaneously from targeted patients and examined for HCMV DNA using one
commercially available assay. The HCMV DNA-positive rate with WB (16.67%) was higher
than that with either SE or PL (8.33%, both P<0.01). Quantitative DNA levels in WB
were of greater magnitude than those in SE (WB-SE mean log-transformed difference,
0.99; 95%CI=0.74-1.25; P<0.0001) and PL (WB-PL mean log-transformed difference,
1.37; 95%CI=1.07-1.66; P<0.0001). Dynamic monitoring revealed that HCMV DNA in WB
was positive sooner and had higher values for a longer period of time during therapy.
With earlier positive detection, higher sensitivity, and yield of greater viral
loads, WB compared favorably to SE or PL and hence is recommended as the superior
material for HCMV DNA surveillance after liver transplantation. In addition, infant
recipients require more intensive monitoring and prophylactic care because of their
higher susceptibility to primary HCMV infection.
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Affiliation(s)
- X Y Chen
- Department of Clinical Laboratory, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - P F Hou
- Department of Clinical Laboratory, Rushan Hospital, Shandong, China
| | - J Bi
- Department of Clinical Laboratory, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - C M Ying
- Department of Clinical Laboratory, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Bi J, Chase SE, Pellenz CD, Kurihara H, Fanning AS, Krendel M. Myosin 1e is a component of the glomerular slit diaphragm complex that regulates actin reorganization during cell-cell contact formation in podocytes. Am J Physiol Renal Physiol 2013; 305:F532-44. [PMID: 23761676 DOI: 10.1152/ajprenal.00223.2013] [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] [Indexed: 11/22/2022] Open
Abstract
Glomerular visceral epithelial cells, also known as podocytes, are critical to both normal kidney function and the development of kidney disease. Podocyte actin cytoskeleton and their highly specialized cell-cell junctions (also called slit diaphragm complexes) play key roles in controlling glomerular filtration. Myosin 1e (myo1e) is an actin-based molecular motor that is expressed in renal glomeruli. Disruption of the Myo1e gene in mice and humans promotes podocyte injury and results in the loss of the integrity of the glomerular filtration barrier. Here, we have used biochemical and microscopic approaches to determine whether myo1e is associated with the slit diaphragm complexes in glomerular podocytes. Myo1e was consistently enriched in the slit diaphragm fraction during subcellular fractionation of renal glomeruli and colocalized with the slit diaphragm markers in mouse kidney. Live cell imaging studies showed that myo1e was recruited to the newly formed cell-cell junctions in cultured podocytes, where it colocalized with the actin filament cables aligned with the nascent contacts. Myo1e-null podocytes expressing FSGS-associated myo1e mutant (A159P) did not efficiently assemble actin cables along new cell-cell junctions. We have mapped domains in myo1e that were critical for its localization to cell-cell junctions and determined that the SH3 domain of myo1e tail interacts with ZO-1, a component of the slit diaphragm complex and tight junctions. These findings suggest that myo1e represents a component of the slit diaphragm complex and may contribute to regulating junctional integrity in kidney podocytes.
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Affiliation(s)
- J Bi
- Dept. of Cell and Developmental Biology, SUNY Upstate Medical University, 750 E. Adams St., Syracuse, NY 13210.
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Zhang J, Zhang R, Geerlings H, Bi J. Mg-Silicate Carbonation Based on an HCl- and NH3-Recyclable Process: Effect of Carbonation Temperature. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201100425] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Liu H, Qin YR, Bi J, Guo A, Fu L, Guan XY. Overexpression of matrix metalloproteinase 10 is associated with poor survival in patients with early stage of esophageal squamous cell carcinoma. Dis Esophagus 2011; 25:656-63. [PMID: 22121946 DOI: 10.1111/j.1442-2050.2011.01284.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Matrix metallopeptidase 10 (MMP10) is frequently expressed and correlates closely with metastasis and poor prognosis in various human cancers. However, the significance of MMP10 expression in esophageal squamous cell carcinoma (ESCC) and its role in ESCC progression remains unclear. In this report, upregulation of MMP10 mRNA was detected in 39/60 (65.0%) of primary ESCC tissues compared with their paired nontumor esophageal tissues. Tissue microarray (TMA) study found protein overexpression of MMP10 in 188/239 (78.7%) of primary ESCC tissues but not in their corresponding nontumor esophageal tissues, suggesting that overexpression of MMP10 may play important roles in ESCC development and progression. Although the overexpression of MMP10 was not significantly associated with disease-specific survival rate (P= 0.182) for all tested ESCCs, it was significantly associated with poorer disease-specific survival (P= 0.001) in early stage of ESCCs (I-IIA). In addition, multivariate analysis found that MMP10 expression in tumor tissues was evaluated as a potential independent prognostic factor for early stage ESCC patients. These findings suggest that MMP10 plays an important role in ESCC progression in the early stage, and overexpression of MMP10 in tumor tissues could be used as a potential prognostic marker for patients with early clinical stage of ESCC.
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Affiliation(s)
- H Liu
- State Key Laboratory of Oncology in Southern China, Cancer Center, Sun Yat-sen University, China
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Qu X, Liang P, Wang Z, Zhang R, Sun D, Gong X, Gan Z, Bi J. Pilot Development of Polygeneration Process of Circulating Fluidized Bed Combustion combined with Coal Pyrolysis. Chem Eng Technol 2010. [DOI: 10.1002/ceat.201000202] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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43
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Wang LP, Bi J, Yao C, Xu XD, Li XX, Wang SM, Li ZL, Zhang DY, Wang M, Chang GQ. Annexin A1 expression and its prognostic significance in human breast cancer. Neoplasma 2010; 57:253-9. [PMID: 20353277 DOI: 10.4149/neo_2010_03_253] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Annexin A1 (ANXA1) is a calcium- and phospholipid-binding protein and is considered to play an important role in tumorigenesis. However, the correlation between ANXA1 expression and tumor clinicopathological features in patients with breast cancer remains unclear. This study investigated the prognostic value of ANXA1 protein as breast cancer marker. Tissue microarray blocks, containing 20 cases of non-tumor breast tissue, 20 cases of benign breast lesion and 135 cases of breast cancer (107 with lymph node metastasis), were constructed. Expression of ANXA1 in these specimens was analyzed using immunohistochemistry. In non-tumor tissue and benign breast lesions, myoepithelial cells showed strong expression of ANXA1. Negative ANXA1 expression was significantly associated with advanced disease stage (P<0.05), especially pathological-N stage (P<0.01). The patients with loss of ANXA1 expression in tumor tissues showed a significantly worse overall survival compared with positive ones (P<0.05). ANXA1 did not correlate well with estrogen receptor (ER), progesterone receptor (PR) and HER2/neu status. Moreover, the level of ANXA1 expression in lymph node metastases was higher than corresponding primary breast cancer. These results suggest that ANXA1 may play a multifaceted role in breast cancer development, progression, and metastases.
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Affiliation(s)
- L P Wang
- Department of Breast Disease Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
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44
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Bi J, Guo AL, Lai YR, Li B, Zhong JM, Wu HQ, Xie Z, He YL, Lv ZL, Lau SH, Wang Q, Huang XH, Zhang LJ, Wen JM, Guan XY. Overexpression of clusterin correlates with tumor progression, metastasis in gastric cancer: a study on tissue microarrays. Neoplasma 2010; 57:191-7. [PMID: 20353268 DOI: 10.4149/neo_2010_03_191] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Clusterin (CLU) is expressed in a wide variety of human tissues and fluids. Overexpression of cytoplasmic clusterin (sCLU) has been implicated in cancer development and progression. The aim of the present study is to evaluate the association of sCLU overexpression with clinicopathological features of human gastric carcinomas (GC).We constructed a gastric cancer tissue microarray containing 173 primary gastric carcinomas and 70 paired non-neoplastic mucosa specimens. The expression of sCLU was studied by immunohistochemistry. The correlations between sCLU expression and clinicopathological features, p53 abnormality, as well as Ki67 activation were analyzed. Overexpressions of sCLU was detected in 28.5% (n=165) of primary GCs by immunohistochemical staining, but not in non-neoplastic mucosa. Clinical association study found that overexpression of sCLU was significantly correlated with lymph-node metastasis (p < 0.001), tumor invasion (p < 0.001) and TNM stage (p < 0.001). In Kaplan-Meier survival analysis, overexpression of sCLU was significantly correlated with unfavorable survival in advanced GCs (p < 0.03). Furthermore, the association of sCLU with abnormal expression of p53 was ascertained. These results suggested that overexpression of sCLU was involved in the progression of GC and it's oncogenic function might be associated with p53 abnormality. Overexpression of sCLU seems to be related with patient's shorter survival in late stage GC.
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Affiliation(s)
- J Bi
- Laboratory of Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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45
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Abstract
BACKGROUND Sertoli cells (SCs) have been described as the 'nurse cells' of the testis whose primary function is to provide essential growth factors and create an appropriate environment for development of other cells [for example, germinal and nerve stem cells (NSCs), used here]. However, the greatest challenge at present is that it is difficult to obtain sufficient SCs of normal physiological function for cell transplantation and biological medicine, largely due to traditional static culture parameter difficult to be monitored and scaled up. OBJECTIVE Operational stirred culture conditions for in vitro expansion and differentiation of SCs need to be optimized for large-scale culture. MATERIALS AND METHODS In this study, the culturing process for primary SC expansion and maintaining lack of differentiation was optimized for the first time, by using microcarrier bead technology in spinner flask culture. Effects of various feeding/refreshing regimes, stirring speeds, seed inoculum levels of SCs, and concentrations of microcarrier used for expansion of mouse SCs were also explored. In addition, pH, osmotic pressure and metabolic variables including consumption rates of glucose, glutamine, amino acids, and formation rates of lactic acid and ammonia, were investigated in culture. RESULTS After 6 days, maximal cell densities achieved were 4.6 x 10(6) cells/ml for Cytodex-1 in DMEM/FBS compared to 4.8 x 10(5) cells/ml in static culture. Improved expansion was achieved using an inoculum of 1 x 10(5) cells/ml and microcarrier concentration of 3 mg/ml at stirring speed of 30 rpm. RESULTS indicated that medium replacement (50% changed everyday) resulted in supply of nutrients and removal of waste products inhibiting cell growth, that lead to maintenance of cultures in steady state for several days. These conditions favoured preservation of SCs in the undifferentiated state and significantly increased their physiological activity and trophic function, which were assessed by co-culturing with NSCs and immunostaining. CONCLUSION Data obtained in this study demonstrate the vast potential of this stirred culture system for efficient, reproducible and cost-effective expansion of SCs in vitro. The system has advantages over static culture, which has major obstacles such as lower cell density, is time-consuming and susceptible to contamination.
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Affiliation(s)
- B Shi
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
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46
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Schmidt GP, Jerebko AK, Zhou X, Bi J, Anand V, Liu J, Schoenberg SO, Schmuecking I, Kiefer B, Reiser M. Entwicklung eines computergestützten Systems zur Detektion von Skelettmetastasen in der MRT-STIR-Bildgebung der Wirbelsäule. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252848] [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: 10/19/2022]
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48
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Deng Y, Kurland BF, Wang J, Bi J, Li W, Lan P, Lin T, Lin EH. High epidermal growth factor receptor expression in metastatic lymph nodes may be more prognostic than in primary tumor for colorectal cancer survival. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15031] [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: 11/20/2022] Open
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Hu S, Zhang M, Lv Z, Bi J, Dong Y, Wen J. Expression of zinc-fingers and homeoboxes 2 in hepatocellular carcinogenesis: a tissue microarray and clinicopathological analysis. Neoplasma 2007; 54:207-11. [PMID: 17447851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Zinc-fingers and homeoboxes 2 (ZHX2) is a novel transcriptional repressor. ZHX2 protein expression and its clinicopathological significance in hepatocellular carcinoma (HCC) remain largely unknown. The aim of this study was to analyze ZHX2 protein expression in a range of liver tissues obtained from cholangitis, cirrhosis, adjacent non-tumorous tissues, primary HCC tissues, and matched metastatic lesions by using Tissue microarray (TMA) technology and compare our findings with clinicopathological parameters. ZHX2 protein expression was detected only in HCC tissues. ZHX2 expression was associated with clinical stage of the disease. The rate of ZHX2 expression was approximately twice as high in stage III-IV (31.25%) compared with stage I-II (16.5%). These results demonstrated that ZHX2 protein may take part in hepatocellular carcinogenesis and HCC progression. In addition, ZHX2 expression in primary lesions with metastasis was significantly higher than without metastasis. ZHX2 expression in metastatic lesions (45.5%) was as approximately twice as higher than that in primary lesions (24.2%) from the same patient. According to these results, ZHX2 was associated with metastasis in HCC.
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Affiliation(s)
- S Hu
- Department of Pathology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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50
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Jerebko AK, Schmidt GP, Zhou X, Bi J, Anand V, Liu J, Schoenberg S, Schmuecking I, Kiefer B, Krishnan A. Robust Parametric Modeling Approach Based on Domain Knowledge for Computer Aided Detection of Vertebrae Column Metastases in MRI. Lecture Notes in Computer Science 2007; 20:713-24. [PMID: 17633742 DOI: 10.1007/978-3-540-73273-0_59] [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] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This study evaluates a robust parametric modeling approach for computer-aided detection (CAD) of vertebrae column metastases in whole-body MRI. Our method involves constructing a model based on geometric primitives from purely anatomical knowledge of organ shapes and rough variability limits. The basic intensity range of primary 'simple' objects in our models is derived from expert knowledge of image formation and appearance for certain tissue types. We formulated the classification problem as a multiple instance learning problem for which a novel algorithm is designed based on Fisher's linear discriminant analysis. Evaluation of metastases detection algorithm is done on a separate test set as well as on the training set via leave-one-patient-out approach.
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Affiliation(s)
- A K Jerebko
- Siemens Medical Solutions, Inc., Malvern, PA, USA
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