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Cai K, Liu Q, Lin Y, Yang X, Liu Q, Pan W, Gao W. Amine Switchable Hydrophilic Solvent Vortex-Assisted Homogeneous Liquid-Liquid Microextraction and GC-MS for the Enrichment and Determination of 2, 6-DIPA Additive in Biodegradable Film. Molecules 2024; 29:2068. [PMID: 38731560 PMCID: PMC11085926 DOI: 10.3390/molecules29092068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/24/2024] [Accepted: 04/28/2024] [Indexed: 05/13/2024] Open
Abstract
2, 6-diisopropylaniline (2, 6-DIPA) is a crucial non-intentionally organic additive that allows the assessment of the production processes, formulation qualities, and performance variations in biodegradable mulching film. Moreover, its release into the environment may have certain effects on human health. Hence, this study developed simultaneous heating hydrolysis-extraction and amine switchable hydrophilic solvent vortex-assisted homogeneous liquid-liquid microextraction for the gas chromatography-mass spectrometry analysis of the 2, 6-DIPA additive and its corresponding isocyanates in poly(butylene adipate-co-terephthalate) (PBAT) biodegradable agricultural mulching films. The heating hydrolysis-extraction conditions and factors influencing the efficiency of homogeneous liquid-liquid microextraction, such as the type and volume of amine, homogeneous-phase and phase separation transition pH, and extraction time were investigated and optimized. The optimum heating hydrolysis-extraction conditions were found to be a H2SO4 concentration of 2.5 M, heating temperature of 87.8 °C, and hydrolysis-extraction time of 3.0 h. As a switchable hydrophilic solvent, dipropylamine does not require a dispersant. Vortex assistance is helpful to speed up the extraction. Under the optimum experimental conditions, this method exhibits a better linearity (0.0144~7.200 μg mL-1 with R = 0.9986), low limit of detection and quantification (0.0033 μg g-1 and 0.0103 μg g-1), high extraction recovery (92.5~105.4%), desirable intra- and inter-day precision (relative standard deviation less than 4.1% and 4.7%), and high enrichment factor (90.9). Finally, this method was successfully applied to detect the content of the additive 2, 6-DIPA in PBAT biodegradable agricultural mulching films, thus facilitating production process monitoring or safety assessments.
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Affiliation(s)
- Kai Cai
- Guizhou Academy of Tobacco Science, Guiyang 550081, China; (K.C.); (Y.L.)
| | - Qiang Liu
- Qiandongnan Company of Guizhou Province of CNTC, Kaili 556000, China;
| | - Yechun Lin
- Guizhou Academy of Tobacco Science, Guiyang 550081, China; (K.C.); (Y.L.)
| | - Xingyou Yang
- Sichuan Province Company of CNTC, Chengdu 610096, China;
| | - Qi Liu
- National Engineering Laboratory for Crop Efficient Water Use and Disaster Mitigation, Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Wenjie Pan
- Guizhou Academy of Tobacco Science, Guiyang 550081, China; (K.C.); (Y.L.)
| | - Weichang Gao
- Guizhou Academy of Tobacco Science, Guiyang 550081, China; (K.C.); (Y.L.)
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Man Y, Wang B, Wang J, Cai K, Rinklebe J, Zhang L, Feng X. New Insights into MeHg Accumulation in Rice ( Oryza sativa L.): Evidence from Cysteine. Environ Sci Technol 2024; 58:5942-5951. [PMID: 38507823 DOI: 10.1021/acs.est.3c08385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
The intake of methylmercury (MeHg)-contaminated rice poses immense health risks to rice consumers. However, the mechanisms of MeHg accumulation in rice plants are not entirely understood. The knowledge that the MeHg-Cysteine complex was dominant in polished rice proposed a hypothesis of co-transportation of MeHg and cysteine inside rice plants. This study was therefore designed to explore the MeHg accumulation processes in rice plants by investigating biogeochemical associations between MeHg and amino acids. Rice plants and underlying soils were collected from different Hg-contaminated sites in the Wanshan Hg mining area. The concentrations of both MeHg and cysteine in polished rice were higher than those in other rice tissues. A significant positive correlation between MeHg and cysteine in rice plants was found, especially in polished rice, indicating a close geochemical association between cysteine and MeHg. The translocation factor (TF) of cysteine showed behavior similar to that of the TF of MeHg, demonstrating that these two chemical species might share a similar transportation mechanism in rice plants. The accumulation of MeHg in rice plants may vary due to differences in the molar ratios of MeHg to cysteine and the presence of specific amino acid transporters. Our results suggest that cysteine plays a vital role in MeHg accumulation and transportation inside rice plants.
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Affiliation(s)
- Yi Man
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Bo Wang
- Health Management Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550025, China
| | - Jianxu Wang
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Kai Cai
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Jörg Rinklebe
- Laboratory of Soil and Groundwater Management, Institute of Foundation Engineering, Water and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, 42285 Wuppertal, Germany
| | - Leiming Zhang
- Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto M3H 5T4, Canada
| | - Xinbin Feng
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Jing Y, Chen W, Qiu X, Qin S, Gao W, Li C, Quan W, Cai K. Exploring Metabolic Characteristics in Different Geographical Locations and Yields of Nicotiana tabacum L. Using Gas Chromatography-Mass Spectrometry Pseudotargeted Metabolomics Combined with Chemometrics. Metabolites 2024; 14:176. [PMID: 38668304 PMCID: PMC11052106 DOI: 10.3390/metabo14040176] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/16/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
The quality of crops is closely associated with their geographical location and yield, which is reflected in the composition of their metabolites. Hence, we employed GC-MS pseudotargeted metabolomics to investigate the metabolic characteristics of high-, medium-, and low-yield Nicotiana tabacum (tobacco) leaves from the Bozhou (sweet honey flavour) and Shuicheng (light flavour) regions of Guizhou Province. A total of 124 metabolites were identified and classified into 22 chemical categories. Principal component analysis revealed that the geographical location exerted a greater influence on the metabolic profiling than the yield. Light-flavoured tobacco exhibited increased levels of sugar metabolism- and glycolysis-related intermediate products (trehalose, glucose-6-phosphate, and fructose-6-phosphate) and a few amino acids (proline and leucine), while sweet honey-flavoured tobacco exhibited increases in the tricarboxylic acid cycle (TCA cycle) and the phenylpropane metabolic pathway (p-hydroxybenzoic acid, caffeic acid, and maleic acid). Additionally, metabolite pathway enrichment analysis conducted at different yields and showed that both Shuicheng and Bozhou exhibited changes in six pathways and four of them were the same, mainly C/N metabolism. Metabolic pathway analysis revealed higher levels of intermediates related to glycolysis and sugar, amino acid, and alkaloid metabolism in the high-yield samples, while higher levels of phenylpropane in the low-yield samples. This study demonstrated that GC-MS pseudotargeted metabolomics-based metabolic profiling can be used to effectively discriminate tobacco leaves from different geographical locations and yields, thus facilitating a better understanding of the relationship between metabolites, yield, and geographical location. Consequently, metabolic profiles can serve as valuable indicators for characterizing tobacco yield and geographical location.
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Affiliation(s)
- Yuan Jing
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; (Y.J.); (S.Q.); (C.L.)
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
| | - Wei Chen
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
| | - Xuebai Qiu
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
| | - Shuyue Qin
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; (Y.J.); (S.Q.); (C.L.)
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
| | - Weichang Gao
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
| | - Chaochan Li
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; (Y.J.); (S.Q.); (C.L.)
| | - Wenxuan Quan
- Guizhou Provincial Key Laboratory for Information Systems of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China; (Y.J.); (S.Q.); (C.L.)
| | - Kai Cai
- Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guizhou Academy of Tobacco Science, Guiyang 550081, China; (W.C.); (X.Q.); (W.G.)
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Tan Y, Yuan J, Shang R, Hao J, Hu S, Cai K. Galvanic replacement synthesis of PtPdAu hollow nanorods as peroxidase mimic with high specific activity for colorimetric detection. Dalton Trans 2024; 53:5624-5631. [PMID: 38440932 DOI: 10.1039/d3dt04374f] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Noble metal nanomaterials have been widely demonstrated to possess intrinsic enzyme-like properties and have been increasingly applied in the fields of analysis and biomedicine. However, current exploration of high-activity noble metal nanozymes is still far from adequate. The construction of hollow structures and adjustment of their elemental composition are effective ways to improve the specific activity (SA) of nanozymes. In this study, trimetallic PtPdAu hollow nanorods (HNRs) were developed using a galvanic replacement reaction and Kirkendall effect. The catalytic experiment showed that the PtPdAu HNRs possessed outstanding peroxidase-like performance and their SA value was up to 563.71 U mg-1, which is remarkable among various previously reported nanozymes and higher than that of monometallic or bimetallic counterparts with similar structure and size prepared in this study. Electron paramagnetic resonance (EPR)measurements showed that the PtPdAu HNRs could contribute to the formation of hydroxyl radicals (˙OH) in catalyzing hydrogen peroxide. When using PtPdAu HNRs as a nanozyme in the colorimetric detection of H2O2 and ascorbic acid (AA), the limits of detection were as low as 1.8 μM and 0.068 μM, respectively. This study demonstrates that PtPdAu HNRs are high-activity nanozymes and have the potential to be applied in the field of analysis.
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Affiliation(s)
- Yi Tan
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
| | - Jincheng Yuan
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
| | - Rui Shang
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
| | - Jian Hao
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
| | - Shengyang Hu
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
| | - Kai Cai
- College of Chemistry & Environmental Engineering, Yangtze University, Jingzhou 434100, China.
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Zhang J, Xu Q, Zhang Y, Foda MF, Cai K, Liu Q, Jia F, Wang H, Xu F, Han H, Liang H. Natural bioactive lysosomes extracted from multiple cells for tumor therapy. Biomaterials 2024; 304:122430. [PMID: 38100907 DOI: 10.1016/j.biomaterials.2023.122430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 11/07/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023]
Abstract
Nanoparticles of biological origin exhibit many unique properties in biological applications due to their exquisite structure, specific composition, and natural biological functionality. In this study, we obtained lysosomes from three distinct cell types (one normal cell and two activated immune cells) and demonstrated their potential as natural therapeutic nanoparticles for tumor therapy. In vitro experiments revealed that these lysosomes maintained their structural integrity, were well-distributed, and exhibited significant biological activity, which effectively induced cancer cell death by generating ROS and disrupting biological substrates. Additionally, in vivo investigations showed that these lysosomes could accumulate in tumor tissues after intravenous administration and exhibited exceptional therapeutic effects through the destruction of tumor blood vessels and the degradation of immunosuppressive proteins, with complete tumor disappearance in a single treatment. This research on the utilization of bioactive lysosomes for tumor treatment provides valuable insights into drug development and tumor treatment, particularly when conventional approaches have proven ineffective.
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Affiliation(s)
- Jin Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, NMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal Products, Shenzhen Key Laboratory of Quality Control Technology for Virus-Based Therapeutics, Guangdong Provincial Medical Products Administration, Shenzhen, 518055, China; State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
| | - Quan Xu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Yifang Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Mohamed F Foda
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China; Department of Biochemistry, Faculty of Agriculture, Benha University, Moshtohor, Toukh, 13736, Egypt
| | - Kai Cai
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Qing Liu
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, NMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal Products, Shenzhen Key Laboratory of Quality Control Technology for Virus-Based Therapeutics, Guangdong Provincial Medical Products Administration, Shenzhen, 518055, China
| | - Fan Jia
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, NMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal Products, Shenzhen Key Laboratory of Quality Control Technology for Virus-Based Therapeutics, Guangdong Provincial Medical Products Administration, Shenzhen, 518055, China
| | - Huadong Wang
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, NMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal Products, Shenzhen Key Laboratory of Quality Control Technology for Virus-Based Therapeutics, Guangdong Provincial Medical Products Administration, Shenzhen, 518055, China
| | - Fuqiang Xu
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Key Laboratory of Viral Vectors for Biomedicine, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, NMPA Key Laboratory for Research and Evaluation of Viral Vector Technology in Cell and Gene Therapy Medicinal Products, Shenzhen Key Laboratory of Quality Control Technology for Virus-Based Therapeutics, Guangdong Provincial Medical Products Administration, Shenzhen, 518055, China.
| | - Heyou Han
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
| | - Huageng Liang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China; Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China.
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Zhang W, Cai K, Sun Z, Xiang Q, Yuan L, Fu M, Liu X, Foda MFF, Ye Z, Huang J, Liu H, Han H, Liang H, Dong H, Zhang X. Elevating Second Near-Infrared Photothermal Conversion Efficiency of Hollow Gold Nanorod for a Precise Theranostic of Orthotopic Bladder Cancer. ACS Nano 2023; 17:18932-18941. [PMID: 37768554 DOI: 10.1021/acsnano.3c04175] [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: 09/29/2023]
Abstract
The second near-infrared (NIR-II) window laser-activated agents have attracted broad interest in an orthotopic cancer theranostic. However, developing NIR-II photothermal agents (PTAs) with advanced photothermal conversion efficiency (PTCE) and tumor-specific response elevation remains a crucial challenge. Herein, a hollow gold nanorod (AuHNR) with a strong localized surface plasmon resonance (LSPR) peak in the NIR-II window was coated with MnO2 and chitosan to obtain AuHNR@MnO2@CS (termed AuMC) by a one-step method. Upon exposure to the tumor microenvironment (TME), the overexpressed GSH triggered degradation of the MnO2 layer to release Mn2+ and resulted in the PTCE elevation owing to exposure of the AuHNR. Consequently, photoacoustic and magnetic resonance imaging for accurate diagnosis, Mn2+-mediated chemodynamic therapy, and AuHNR elevating PT therapy for precise treatment could be achieved. Both in vitro and in vivo experiments confirmed the good performance of the AuMC on an orthotopic bladder cancer precise theranostic. This study provided NIR-II activated, TME-response PT conversion efficiency enhanced PTAs and offered a tumor-selective theranostic agent for orthotopic bladder cancer in clinical application.
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Affiliation(s)
- Weiyun Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Kai Cai
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
- College of Chemistry & Environmental Engineering, Yangtze University. No.1 Nanhuan Road, Jingzhou 434103, P.R. China
| | - Zhiduo Sun
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Qin Xiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Li Yuan
- Department of Ultrasonography, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
| | - Manli Fu
- Department of Ultrasonography, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
| | - Xiaoming Liu
- Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
| | - Mohamed Frahat Foda Foda
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China
- Department of Biochemistry, Faculty of Agriculture, Benha University, Moshtohor, Toukh 13736, Egypt
| | - Zhichao Ye
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
| | - Jinkun Huang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Huiyu Liu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Heyou Han
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Huageng Liang
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430070, P. R. China
| | - Haifeng Dong
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Xueji Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
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Yang JE, Larson MR, Sibert BS, Kim JY, Parrell D, Sanchez JC, Pappas V, Kumar A, Cai K, Thompson K, Wright ER. Correlative montage parallel array cryo-tomography for in situ structural cell biology. Nat Methods 2023; 20:1537-1543. [PMID: 37723245 PMCID: PMC10555823 DOI: 10.1038/s41592-023-01999-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 08/08/2023] [Indexed: 09/20/2023]
Abstract
Imaging large fields of view while preserving high-resolution structural information remains a challenge in low-dose cryo-electron tomography. Here we present robust tools for montage parallel array cryo-tomography (MPACT) tailored for vitrified specimens. The combination of correlative cryo-fluorescence microscopy, focused-ion-beam milling, substrate micropatterning, and MPACT supports studies that contextually define the three-dimensional architecture of cells. To further extend the flexibility of MPACT, tilt series may be processed in their entirety or as individual tiles suitable for sub-tomogram averaging, enabling efficient data processing and analysis.
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Affiliation(s)
- Jie E Yang
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Matthew R Larson
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Bryan S Sibert
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Joseph Y Kim
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Department of Chemistry, University of Wisconsin, Madison, WI, USA
| | - Daniel Parrell
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI, USA
| | - Juan C Sanchez
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Biophysics Graduate Program, University of Wisconsin, Madison, WI, USA
| | - Victoria Pappas
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Biophysics Graduate Program, University of Wisconsin, Madison, WI, USA
| | - Anil Kumar
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Kai Cai
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Keith Thompson
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA
| | - Elizabeth R Wright
- Department of Biochemistry, University of Wisconsin, Madison, WI, USA.
- Cryo-Electron Microscopy Research Center, Department of Biochemistry, University of Wisconsin, Madison, WI, USA.
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI, USA.
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI, USA.
- Morgridge Institute for Research, Madison, WI, USA.
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Wright ER, Yang J, Sibert B, Larson M, Kim JY, Parrell D, Sanchez JC, Kumar A, Cai K. Developing Technologies for Correlative Cryo-Imaging Pipelines. Microsc Microanal 2023; 29:1025. [PMID: 37613235 DOI: 10.1093/micmic/ozad067.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Elizabeth R Wright
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
- Morgridge Institute for Research, UW-Madison, Madison, WI, United States
| | - Jae Yang
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Bryan Sibert
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Matthew Larson
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Joseph Y Kim
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Department of Chemistry, UW-Madison, Madison, WI, United States
| | - Daniel Parrell
- Department of Biochemistry, UW-Madison, Madison, WI, United States
| | - Juan C Sanchez
- Department of Biochemistry, UW-Madison, Madison, WI, United States
| | - Anil Kumar
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Kai Cai
- Department of Biochemistry, UW-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, UW-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
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9
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Sanchez JC, Montemayor EJ, Ploscariu NT, Parrell DD, Yang J, Sibert B, Cai K, Wright ER. Structural and Functional Analysis of Flagellar Filaments of Caulobacter crescentus. Microsc Microanal 2023; 29:920-921. [PMID: 37613764 DOI: 10.1093/micmic/ozad067.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Juan C Sanchez
- Biophysics Graduate Program, University of Wisconsin-Madison, Madison, WI, United States
- Biotechnology Training Program, University of Wisconsin-Madison, Madison, WI, United States
| | - Eric J Montemayor
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Nicoleta T Ploscariu
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Daniel D Parrell
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Jae Yang
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Bryan Sibert
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Kai Cai
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
| | - Elizabeth R Wright
- Biophysics Graduate Program, University of Wisconsin-Madison, Madison, WI, United States
- Biotechnology Training Program, University of Wisconsin-Madison, Madison, WI, United States
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, United States
- Morgridge Institute for Research, UW-Madison, Madison, WI, United States
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10
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Kumar A, Cai K, Larson MR, Sibert BS, Yang JE, Wright ER. Cryo-EM Pipeline for Pharmaceutical and Biotechnology Industries. Microsc Microanal 2023; 29:1034-1035. [PMID: 37613370 DOI: 10.1093/micmic/ozad067.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Anil Kumar
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Kai Cai
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Matt R Larson
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Bryan S Sibert
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Jae E Yang
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
| | - Elizabeth R Wright
- Cryo-Electron Microscopy Research Centre, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI, United States
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI, United States
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11
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Sanchez JC, Montemayor EJ, Ploscariu NT, Parrell D, Baumgardt JK, Yang JE, Sibert B, Cai K, Wright ER. Atomic-level architecture of Caulobacter crescentus flagellar filaments provide evidence for multi-flagellin filament stabilization. bioRxiv 2023:2023.07.10.548443. [PMID: 37503001 PMCID: PMC10369909 DOI: 10.1101/2023.07.10.548443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Flagella are dynamic, ion-powered machines with assembly pathways that are optimized for efficient flagella production. In bacteria, dozens of genes are coordinated at specific times in the cell lifecycle to generate each component of the flagellum. This is the case for Caulobacter crescentus, but little is known about why this species encodes six different flagellin genes. Furthermore, little is known about the benefits multi-flagellin species possess over single flagellin species, if any, or what molecular properties allow for multi-flagellin filaments to assemble. Here we present an in-depth analysis of several single flagellin filaments from C. crescentus, including an extremely well-resolved structure of a bacterial flagellar filament. We highlight key molecular interactions that differ between each bacterial strain and speculate how these interactions may alleviate or impose helical strain on the overall architecture of the filament. We detail conserved residues within the flagellin subunit that allow for the synthesis of multi-flagellin filaments. We further comment on how these molecular differences impact bacterial motility and highlight how no single flagellin filament achieves wild-type levels of motility, suggesting C. crescentus has evolved to produce a filament optimized for motility comprised of six flagellins. Finally, we highlight an ordered arrangement of glycosylation sites on the surface of the filaments and speculate how these sites may protect the β-hairpin located on the surface exposed domain of the flagellin subunit.
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Affiliation(s)
- Juan C. Sanchez
- Biophysics Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
- Biotechnology Training Program, University of Wisconsin-Madison, Madison, WI 53706
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Eric J. Montemayor
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | | | - Daniel Parrell
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI USA
| | - Joseph K. Baumgardt
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Jie E. Yang
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI USA
| | - Bryan Sibert
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI USA
| | - Kai Cai
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI USA
| | - Elizabeth R. Wright
- Biophysics Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
- Biotechnology Training Program, University of Wisconsin-Madison, Madison, WI 53706
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- DOE Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI USA
- Cryo-Electron Microscopy Research Center, UW-Madison, Madison, WI, 53706, USA
- Midwest Center for Cryo-Electron Tomography, Department of Biochemistry, University of Wisconsin, Madison, WI USA
- Morgridge Institute for Research, UW-Madison, Madison, WI, 53715, USA
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12
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Cai K, Gao W, Li X, Lin Y, Li D, Quan W, Zhao R, Ren X. Development and Application of Portable Reflectometric Spectroscopy Combined with Solid-Phase Extraction for Determination of Potassium in Flue-Cured Tobacco Leaves. ACS Omega 2023; 8:20730-20738. [PMID: 37332809 PMCID: PMC10269270 DOI: 10.1021/acsomega.3c01326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/24/2023] [Indexed: 06/20/2023]
Abstract
Potassium (K) plays important roles in the energy and substance conversion of tobacco metabolism and is also regarded as one of the important indicators of tobacco quality evaluation. However, the K quantitative analytical method shows poor performance in terms of being easy-to-use, cost-effective, and portable. Here, we developed a rapid and simple method for the determination of K content in flue-cured tobacco leaves, including water extraction with 100 °C heating, purification with solid-phase extraction (SPE), and analysis with portable reflectometric spectroscopy based on K test strips. The method development consisted of optimization of the extraction and test strip reaction conditions, screening of SPE sorbent materials, and evaluation of the matrix effect. Under the optimum conditions, good linearity was observed in 0.20-0.90 mg/mL with a correlation coefficient >0.999. The extraction recoveries were found to be in the range of 98.0-99.5% with a repeatability and reproducibility of 1.15-1.98% and 2.04-3.26%, respectively. The sample measured range was calculated to be 0.76-3.68% K. Excellent agreement was found in accuracy between the developed reflectometric spectroscopy method and the standard method. The developed method was applied to analyze the K content in different cultivars, and the content varied greatly among the samples with lowest and highest contents for Y28 and Guiyan 5 cultivars, respectively. This study can provide a reliable approach for K analysis, which may become available on-site in a quick on-farm test.
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Affiliation(s)
- Kai Cai
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Weichang Gao
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Xiang Li
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Yechun Lin
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Decheng Li
- State
Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil
Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Wenxuan Quan
- Key
Laboratory for Information System of Mountainous Area and Protection
of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550025, China
| | - Ruijuan Zhao
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
| | - Xueliang Ren
- Guizhou
Academy of Tobacco Science, Guiyang 550081, China
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13
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Gui L, O'Shaughnessy WJ, Cai K, Reetz E, Reese ML, Nicastro D. Cryo-tomography reveals rigid-body motion and organization of apicomplexan invasion machinery. Nat Commun 2023; 14:1775. [PMID: 36997532 PMCID: PMC10063558 DOI: 10.1038/s41467-023-37327-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 03/10/2023] [Indexed: 04/03/2023] Open
Abstract
The apical complex is a specialized collection of cytoskeletal and secretory machinery in apicomplexan parasites, which include the pathogens that cause malaria and toxoplasmosis. Its structure and mechanism of motion are poorly understood. We used cryo-FIB-milling and cryo-electron tomography to visualize the 3D-structure of the apical complex in its protruded and retracted states. Averages of conoid-fibers revealed their polarity and unusual nine-protofilament arrangement with associated proteins connecting and likely stabilizing the fibers. Neither the structure of the conoid-fibers nor the architecture of the spiral-shaped conoid complex change during protrusion or retraction. Thus, the conoid moves as a rigid body, and is not spring-like and compressible, as previously suggested. Instead, the apical-polar-rings (APR), previously considered rigid, dilate during conoid protrusion. We identified actin-like filaments connecting the conoid and APR during protrusion, suggesting a role during conoid movements. Furthermore, our data capture the parasites in the act of secretion during conoid protrusion.
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Affiliation(s)
- Long Gui
- Department of Cell Biology, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - William J O'Shaughnessy
- Department of Pharmacology, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - Kai Cai
- Department of Cell Biology, University of Texas, Southwestern Medical Center, Dallas, TX, USA
- Department of Biophysics, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - Evan Reetz
- Department of Cell Biology, University of Texas, Southwestern Medical Center, Dallas, TX, USA
| | - Michael L Reese
- Department of Pharmacology, University of Texas, Southwestern Medical Center, Dallas, TX, USA.
- Department of Biochemistry, University of Texas, Southwestern Medical Center, Dallas, TX, USA.
| | - Daniela Nicastro
- Department of Cell Biology, University of Texas, Southwestern Medical Center, Dallas, TX, USA.
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14
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Li YF, Zhang JH, Gan H, Zhang KC, Cai K, Liu W, Luo SN, Jiang HL, Jin B, Zhao LB, Sun K. [Related factors of negative conversion time of nucleic acid in children with COVID-19]. Zhonghua Er Ke Za Zhi 2023; 61:256-260. [PMID: 36849354 DOI: 10.3760/cma.j.cn112140-20221023-00897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Objective: To explore the related factors of negative conversion time (NCT) of nucleic acid in children with COVID-19. Methods: A retrospective cohort study was conducted. A total of 225 children who were diagnosed with COVID-19 and admitted to Changxing Branch of Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from April 3rd to May 31st 2022 were enrolled in the study. The infection age, gender, viral load, basic disease, clinical symptoms and information of accompanying caregivers were retrospectively analyzed. According to age, the children were divided into<3 years of age group and 3-<18 years of age group. According to the viral nucleic acid test results, the children were divided into positive accompanying caregiver group and negative accompanying caregiver group. Comparisons between groups were performed using Mann-Whitney U test or Chi-square test. Multivariate Logistic regression analysis was used to analyze the related factors of NCT of nucleic acid in children with COVID-19. Results: Among the 225 patients (120 boys and 105 girls) of age 2.8 (1.3, 6.2) years, 119 children <3 years and 106 children 3-<18 years of age, 19 cases were diagnosed with moderate COVID-19, and the other 206 cases were diagnosed with mild COVID-19. There were 141 patients in the positive accompanying caregiver group and 84 patients in the negative accompanying caregiver group.Patients 3-<18 years of age had a shorter NCT (5 (3, 7) vs.7 (4, 9) d, Z=-4.17, P<0.001) compared with patients <3 years of age. Patients in the negative accompanying caregiver group had a shorter NCT (5 (3, 7) vs.6 (4, 9) d,Z=-2.89,P=0.004) compared with patients in the positive accompanying caregiver group. Multivariate Logistic regression analysis showed that anorexia was associated with NCT of nucleic acid (OR=3.74,95%CI 1.69-8.31, P=0.001). Conclusion: Accompanying caregiver with positive nucleic acid test may prolong NCT of nucleic acid, and decreased appetite may be associated with prolonged NCT of nucleic acid in children with COVID-19.
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Affiliation(s)
- Y F Li
- Department of Pediatric Nephrology, Rheumatology and Immunology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J H Zhang
- Department of Pediatric Pulmonology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - H Gan
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - K C Zhang
- Department of Pediatric Endocrinology and Genetic Metabolism, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - K Cai
- Department of Infectious Diseases, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - W Liu
- Department of Pediatric Heart Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - S N Luo
- Jinglang Senior Expert Clinic, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - H L Jiang
- Department of Cardiology, Changxing Branch of Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 201913, China
| | - B Jin
- Department of Radiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - L B Zhao
- Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - K Sun
- Department of Pediatric Heart Center, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
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15
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Chu P, Liu H, Cai K, Liu Y, Li Y, Wang Y, Wang S, Huang S, Ma X. Influence of Pseudoboehmite on the Performance of Shaped Mordenite Catalyst for Dimethyl Ether Carbonylation. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118607] [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: 03/08/2023]
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16
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Nagahara M, Cai K, Chatterjee D, Chopra N, Hatanaka T, Hori Y, Ishii H, Quevedo DE, Reniers M. Special issue on control technology for networked and distributed robotics (Part II). Adv Robot 2023. [DOI: 10.1080/01691864.2023.2168316] [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: 02/09/2023]
Affiliation(s)
| | - Kai Cai
- Osaka Metropolitan University, Japan
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17
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Cai K, Zhao Y, Kang Z, Wang S, Wright AL, Jiang X. Environmental pseudotargeted metabolomics: A high throughput and wide coverage method for metabolic profiling of 1000-year paddy soil chronosequences. Sci Total Environ 2023; 858:159978. [PMID: 36343812 DOI: 10.1016/j.scitotenv.2022.159978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/01/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Pseudotargeted metabolomics is achieved by introducing an algorithm designed to choose ions for selected ion monitoring from identified metabolites. This method integrates the advantages of both untargeted and targeted metabolomics. In this study, environmental pseudotargeted metabolomics was established to analyze the soil metabolites, based on microwave assisted derivatization followed by gas chromatography-mass spectrometry analysis. The method development included the optimization of extraction factors and derivatization conditions, evaluation of silylation reagent types and matrix-dependent behaviors. Under the optimal conditions, the microwave oximation and silylation were completed in 5 min and 9 min. A total of 184 metabolites from 26 chemical classifications were identified in soil matrices. The method validation demonstrated excellent performance in terms of linearity (correlation coefficient > 0.99), repeatability (relative standard deviation (RSD) < 20 %), reproducibility (RSD < 25 %), stability (relative difference < 10 % within 18 h), and sensitivity (16-110 times higher signal-to-noise ratio). This developed method was applied to characterize the metabolite compositions and metabolic profiling in a 1000-year paddy soil chronosequence. The relative abundance of trehalose was highest in 6-(40.3 %), 60-(55.8 %), 300-(67.7 %)and 1000-(61.7 %)years paddy soil, respectively, but long-chain fatty acids were most abundant in marine sediment (57.4 %). Forty-two characteristic metabolites were considered as primarily responsible for discriminating and characterizing the paddy soil chronosequences development and seven major metabolic pathways were altered. In addition, GC-MS metabolite profile presented better discriminating power in paddy soil ecosystem changes than phospholipid fatty acids (PLFAs). Overall, environmental pseudotargeted metabolomics can provide a high throughout and wide coverage approach for performing metabolic profiling in the soil research.
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Affiliation(s)
- Kai Cai
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Beibei, Chongqing 400715, China; Guizhou Academy of Tobacco Science, 29 Longtanba Road, Guanshanhu District, Guiyang 550081, China
| | - Yongpeng Zhao
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Beibei, Chongqing 400715, China
| | - Zongjing Kang
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Beibei, Chongqing 400715, China
| | - Shuling Wang
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Beibei, Chongqing 400715, China
| | - Alan L Wright
- Indian River Research & Education Center, University of Florida-IFAS, Fort Pierce, FL 34945, USA
| | - Xianjun Jiang
- College of Resources and Environment, Southwest University, 2 Tiansheng Road, Beibei, Chongqing 400715, China.
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18
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Nagahara M, Cai K, Chatterjee D, Chopra N, Hatanaka T, Hori Y, Ishii H, Quevedo DE, Reniers M. Special issue on control technology for networked and distributed robotics. Adv Robot 2023. [DOI: 10.1080/01691864.2022.2156058] [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: 02/01/2023]
Affiliation(s)
| | - Kai Cai
- Osaka Metropolitan University, Osaka, Japan
| | | | | | | | | | | | | | - Michel Reniers
- Eindhoven University of Technology, Eindhoven, Netherlands
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19
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Peng M, Liu Y, Jia X, Wu Y, Zou X, Ke M, Cai K, Zhang L, Lu D, Xu A. Dietary Total Antioxidant Capacity and Cognitive Function in Older Adults in the United States: The NHANES 2011-2014. J Nutr Health Aging 2023; 27:479-486. [PMID: 37357333 DOI: 10.1007/s12603-023-1934-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 05/13/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVES Oxidative stress level takes part in the development of cognitive decline. However, the association between total antioxidant capacity (TAC) from diet and cognitive function is controversial. The aim of this study was to investigate the relationship between TAC and the cognitive function of older adults in the U.S. DESIGN A cross-sectional study. SETTING National Health and Nutrition Examination Surveys database. PARTICIPANTS 2712 older adults aged over 60 years. MEASUREMENTS TAC was calculated from 8 antioxidative vitamins based on the reference values for vitamin C equivalent antioxidant capacity obtained from individuals' 24 h dietary recall. Four memory-related assessments were employed [Immediate Recall test (IRT), Delayed Recall test (DRT), Animal Fluency test (AFT), and Digit Symbol Substitution test (DSST)]. RESULTS Among the 2712 participants, the median age was 68 years, and 50.4% were women. Participants in the group with higher TAC levels had relatively higher IRT, AFT and DSST scores (P=0.025, P=0.008, P<0.001, respectively). In adjusted weighted linear regression, log-transformed TAC was positively associated with AFT (β=1.10, 95%CI: 0.51, 1.70) and DSST (β=2.81, 95%CI: 1.16, 4.45). Compared with the first quartile, the participants in the second (Q2 vs. Q1, OR=0.66, 95%CI: 0.43,1.02) and fourth quartile (Q4 vs. Q1, OR=0.47, 95%CI:0.28, 0.78) of log-transformed TAC showed a decreased risk of impaired cognitive function (ICF) after adjusting for confounders. The dose-response analysis indicated a gradual descent in the risk of ICF as TAC increases. Diabetes mellitus (DM) mediated part of the effect of TAC on ICF. The relationship between TAC and ICF was more pronounced in subjects with DM (Q4 vs Q1, OR=0.36, 95%CI:0.17, 0.74). CONCLUSION Our findings support that higher dietary antioxidant potential was related to a decreased risk of cognitive dysfunction, particularly in the subjects with DM who may have oxidative injury. DM was one of the factors mediating the effect of TAC on ICF.
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Affiliation(s)
- M Peng
- Anding Xu, Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, No.613, Huangpu Road West, Guangzhou, 510630, Guangdong Province, China, ; Dan Lu, Department of Neurology and Stroke Center, The First Affiliated Hospital of Jinan University, No.613, Huangpu Road West, Guangzhou, 510630, Guangdong Province, China,
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Wu YL, Zhou Q, Pan Y, Yang X, Zhao Y, Han G, Pang Q, Zhang Z, Wang Q, Yao J, Wang H, Yang W, Liu B, Chen Q, Du X, Cai K, Li B, Shuang J, Song L, Shi W. LBA5 A phase II study of neoadjuvant SHR-1701 with or without chemotherapy (chemo) followed by surgery or radiotherapy (RT) in stage III unresectable NSCLC (uNSCLC). Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100361] [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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21
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Yang Z, Zhang F, Cai K, Xu J. Long Noncoding RNA HOXA-AS2 Facilitates Prostate Cancer Progression by Inhibiting miR-885-5p to Upregulate KDM5B. Kidney Blood Press Res 2022; 48:45-55. [PMID: 36404720 DOI: 10.1159/000527140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 06/20/2022] [Indexed: 12/23/2023] Open
Abstract
INTRODUCTION The regulatory network of competing endogenous RNAs (ceRNAs) affects tumorigenesis. In this study, we aimed to investigate the mechanism by which long noncoding RNA HOXA-AS2 promotes prostate cancer (PCa) progression. METHODS The expression levels of HOXA-AS2, miR-885-5p, and KDM5B in PCa tissues and cell lines were evaluated by qRT-PCR or Western blotting. CCK-8 assay, caspase-3 activity assay, flow cytometry, and scratch test revealed changes in cell proliferation, caspase-3 activity, apoptosis, and migration, respectively. Luciferase and radioimmunoprecipitation assays were used to evaluate the correlation among HOXA-AS2, miR-885-5p, and KDM5B expression profiles. RESULTS HOXA-AS2 expression level was elevated in PCa tissues and cells. Silencing of HOXA-AS2 suppressed proliferation and migration and facilitated apoptosis in PCa cells. HOXA-AS2 competitively adsorbed miR-885-5p, thereby blocking the effect of HOXA-AS2 knockdown by the miR-885-5p inhibitor in PCa cells. Moreover, KDM5B, a target of miR-885-5p, neutralized the function of miR-885-5p in PCa cells. CONCLUSION This study revealed a potential ceRNA regulatory pathway in which HOXA-AS2 affects KDM5B expression levels by sponging miR-885-5p to promote PCa development and progression.
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Affiliation(s)
- Zhi Yang
- Department of Urology, The Sixth Hospital of Wuhan, Wuhan, China
| | - Fan Zhang
- Department of Urology, The Sixth Hospital of Wuhan, Wuhan, China
| | - Kai Cai
- Department of Urology, The Sixth Hospital of Wuhan, Wuhan, China
| | - Jianxin Xu
- Department of Urology, The Sixth Hospital of Wuhan, Wuhan, China
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22
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Bromberg R, Cai K, Guo Y, Plymire D, Emde T, Puzio M, Borek D, Otwinowski Z. The His-tag as a decoy modulating preferred orientation in cryoEM. Front Mol Biosci 2022; 9:912072. [PMID: 36325274 PMCID: PMC9619061 DOI: 10.3389/fmolb.2022.912072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 08/19/2022] [Indexed: 12/02/2022] Open
Abstract
The His-tag is a widely used affinity tag that facilitates purification by means of affinity chromatography of recombinant proteins for functional and structural studies. We show here that His-tag presence affects how coproheme decarboxylase interacts with the air-water interface during grid preparation for cryoEM. Depending on His-tag presence or absence, we observe significant changes in patterns of preferred orientation. Our analysis of particle orientations suggests that His-tag presence can mask the hydrophobic and hydrophilic patches on a protein’s surface that mediate the interactions with the air-water interface, while the hydrophobic linker between a His-tag and the coding sequence of the protein may enhance other interactions with the air-water interface. Our observations suggest that tagging, including rational design of the linkers between an affinity tag and a protein of interest, offer a promising approach to modulating interactions with the air-water interface.
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Affiliation(s)
- Raquel Bromberg
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Ligo Analytics, Dallas, TX, United States
| | - Kai Cai
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Yirui Guo
- Ligo Analytics, Dallas, TX, United States
| | - Daniel Plymire
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Ligo Analytics, Dallas, TX, United States
| | - Tabitha Emde
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Maciej Puzio
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Dominika Borek
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Center for Structural Genomics of Infectious Diseases, Dallas, TX, United States
- *Correspondence: Dominika Borek, ; Zbyszek Otwinowski,
| | - Zbyszek Otwinowski
- Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX, United States
- Center for Structural Genomics of Infectious Diseases, Dallas, TX, United States
- *Correspondence: Dominika Borek, ; Zbyszek Otwinowski,
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Cai K, Lin Y, Ma Y, Yang Z, Yu L, Zhang J, Xu D, Zeng R, Gao W. Determination of Residual Diisocyanates and Related Diamines in Biodegradable Mulch Films Using N-Ethoxycarbonylation Derivatization and GC-MS. Molecules 2022; 27:molecules27196754. [PMID: 36235287 PMCID: PMC9572079 DOI: 10.3390/molecules27196754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/06/2022] [Accepted: 10/07/2022] [Indexed: 12/05/2022] Open
Abstract
Diisocyanates are highly reactive compounds with two functional isocyanate groups. The exposure of diisocyanates is associated with severely adverse health effects, such as asthma, inflammation in the respiratory tract, and cancer. The hydrolysis product from diisocyanates to related diamines is also a potential carcinogen. Here, we developed an effective, accurate, and precise method for simultaneous determination of residual diisocyanates and related diamines in biodegradable mulch films, based on N-ethoxycarbonylation derivatization and gas chromatography-mass spectrometry. The method development included the optimization of ultrasonic hydrolysis and extraction, screening of N-ethoxycarbonylation conditions with ethyl chloroformate, evaluation of the diamines degradation, and analysis of the fragmentation mechanisms. Under the optimum experimental conditions, good linearity was observed with R2 > 0.999. The extraction recoveries were found in the range of 93.9−101.2% with repeatabilities and reproducibilities in 0.89−8.12% and 2.12−10.56%, respectively. The limits of detection ranged from 0.0025 to 0.057 µg/mL. The developed method was applied to commercial polybutylene adipate co-terephthalate (PBAT) biodegradable mulch film samples for analysis of the diverse residual diisocyanates and related diamine additives. The components varied greatly among the sample from different origin. Overall, this study provides a reliable method for assessing safety in biodegradable mulch films.
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Affiliation(s)
- Kai Cai
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Yechun Lin
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Yunfei Ma
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Zhixiao Yang
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Lei Yu
- Key Laboratory for Degradation Technologies of Pesticide Residues with Superior Agricultural Products in Guizhou Ecological Environment, Guiyang University, Guiyang 550005, China
| | - Jie Zhang
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Dongqing Xu
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
| | - Rong Zeng
- School of Geography Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Weichang Gao
- Guizhou Academy of Tobacco Science, Upland Flue-Cured Tobacco Quality & Ecology Key Laboratory of CNTC, Guiyang 550081, China
- Correspondence: ; Tel.: +86-0851-84116908
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Guo S, Yu S, Yuan H, Cai K, Tian H, Da Z. Peptization mechanism of aluminum phosphate sol. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129637] [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: 11/03/2022]
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Abstract
Single-pass transmembrane receptors (SPTMRs) represent a diverse group of integral membrane proteins that are involved in many essential cellular processes, including signal transduction, cell adhesion, and transmembrane transport of materials. Dysregulation of the SPTMRs is linked with many human diseases. Despite extensive efforts in past decades, the mechanisms of action of the SPTMRs remain incompletely understood. One major hurdle is the lack of structures of the full-length SPTMRs in different functional states. Such structural information is difficult to obtain by traditional structural biology methods such as X-ray crystallography and nuclear magnetic resonance (NMR). The recent rapid development of single-particle cryo-electron microscopy (cryo-EM) has led to an exponential surge in the number of high-resolution structures of integral membrane proteins, including SPTMRs. Cryo-EM structures of SPTMRs solved in the past few years have tremendously improved our understanding of how SPTMRs function. In this review, we will highlight these progresses in the structural studies of SPTMRs by single-particle cryo-EM, analyze important structural details of each protein involved, and discuss their implications on the underlying mechanisms. Finally, we also briefly discuss remaining challenges and exciting opportunities in the field.
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Affiliation(s)
- Kai Cai
- Departments of Biophysics, University of Texas Southwestern Medical Center, Dallas, Texas 75231, USA
| | - Xuewu Zhang
- Departments of Biophysics, University of Texas Southwestern Medical Center, Dallas, Texas 75231, USA
- Departments of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75231, USA
- Corresponding Author: Xuewu Zhang, Department of pharmacology, UT Southwestern Medical Center, Dallas, TX 75390, USA;
| | - Xiao-chen Bai
- Departments of Biophysics, University of Texas Southwestern Medical Center, Dallas, Texas 75231, USA
- Departments of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas 75231, USA
- Corresponding Author: Xiao-chen Bai, Department of Biophysics, UT Southwestern Medical Center, Dallas, TX 75390, USA;
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Cai K, Yang Y, Guo ZJ, Cai RL, Hashida H, Li HX. Amentoflavone inhibits colorectal cancer epithelial-mesenchymal transition via the miR-16-5p/HMGA2/β-catenin pathway. Ann Transl Med 2022; 10:1009. [PMID: 36267717 PMCID: PMC9577732 DOI: 10.21037/atm-22-3035] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 08/30/2022] [Indexed: 11/21/2022]
Abstract
Background Amentoflavone is a type of bioflavonoid that exists in many Chinese medicines and has anti-inflammatory, antioxidant, antiviral, and anticancer effects. However, the effect of amentoflavone on epithelial to mesenchymal transition (EMT) in human colorectal cancer (CRC) has not been studied. In this study, we aim to explore the effect of amentoflavone on EMT in CRC. Methods The effects of long noncoding RNA (lncRNA) miR-16-5p on proliferation, migration, and invasion were determined by in vitro and in vivo experiments. A luciferase reporter assay was carried out to reveal the interaction between miR-16-5p and targeted genes. Reverse transcription polymerase chain reaction (RT-PCR) was used to evaluate the expression of miR-16-5p. A western blot assay was used to detect the expression of targeted genes in CRC cells. Results The results showed that amentoflavone significantly inhibited CRC migration, invasion, and EMT by increasing miR-16-5p expression. Mechanistically, amentoflavone induced inactivation of the Wnt/β-catenin pathway via miR-16-5p, directly targeting 3'-UTR of HMGA2 to suppress HMGA2 expression in CRC. Clinically, combined miR-16-5p and HMGA2 levels may serve as a predictor for poor prognosis in patients with CRC. Furthermore, an in vivo PDX model suggested that amentoflavone exhibited antitumor effects in vivo via the miR-16-5p/HMGA2/β-catenin pathway. Conclusions This is the first study to show that amentoflavone inhibits CRC EMT via the miR-16/HMGA2/β-catenin pathway. Amentoflavone may be beneficial in treating CRC patients in the clinic.
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Affiliation(s)
- Kai Cai
- Department of Oncology, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Yang Yang
- Department of Oncology, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Zi-Jian Guo
- Department of Oncology, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Rui-Lin Cai
- Department of Information Management and Information Systems, Xi’an Jiaotong-Liverpool University, Suzhou, China
| | - Hiroki Hashida
- Department of Surgery, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Hong-Xia Li
- Department of Oncology, the First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
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27
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Cai K, Nagahara M. A new perspective on cooperative control of multi-agent systems through different types of graph Laplacians. Adv Robot 2022. [DOI: 10.1080/01691864.2022.2093616] [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: 11/01/2022]
Affiliation(s)
- Kai Cai
- Department of Core Informatics, Osaka Metropolitan University, Osaka, Japan
| | - Masaaki Nagahara
- Institute of Environmental Science and Technology,The University of Kitakyushu, Kitakyushu, Japan
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Xia Y, Li Z, Li Y, Cai K, Liu Y, Lv J, Huang S, Ma X. Promotion effect and mechanism of Ga modification on dimethyl ether carbonylation catalyzed by mordenite. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Peng Y, Li Y, Liu L, Hao X, Cai K, Xiong J, Hong W, Tao J. New optimization approach for amphoteric/magnetic ramie biosorbent in dyestuff adsorption. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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30
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Vigneswaran H, Uyanik M, Xie K, Macias V, Balla A, Magin R, Cai K, Damen F, Zhou X, Gann P, Abern M. Biparametric quantitative MRI for prostate cancer detection. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00812-0] [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]
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31
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Lei B, Chang W, Zhao H, Zhang K, Yu J, Yu S, Cai K, Zhang J, Lu K. Nitrogen application and differences in leaf number retained after topping affect the tobacco (Nicotiana tabacum) transcriptome and metabolome. BMC Plant Biol 2022; 22:38. [PMID: 35045826 PMCID: PMC8767696 DOI: 10.1186/s12870-022-03426-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Agronomic treatments such as the application of nitrogen fertilizer and topping (removal of the inflorescence and top leaves) cause substantial changes in plant metabolism. To explore these changes, we conducted comparative transcriptomic and metabolomic analyses of leaves collected from four positions along the stem on plants exposed to two nitrogen doses and with different numbers of leaves retained after topping in tobacco (Nicotiana tabacum). RESULTS We identified 13,330 unique differentially expressed genes and 32 differentially abundant metabolites. Through RNA-seq and WGCNA analyze, we constructed 2 co-expression networks (green and blue) highly correlation to N application and leaf number retained, predicted a hub gene NtGER3 may play an important role in N metabolism related to amino acid (cysteine) through CK pathway in tobacco leaves, NtARFs may participated in modulating the auxin signal and N in bottom leaves and NtRAP2.12 as key gene involved in N regulation by ethylene pathway. What's more, our data prove C/N transformation and balance affect the "source - flow - sink" redistribution and remobilization in tobacco during growth and development process. CONCLUSIONS Overall, this comparative transcriptomics study provides novel insight into the complex molecular mechanisms underlying plant responses to different levels of nitrogen application and the number of leaves remaining after topping in plants.
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Affiliation(s)
- Bo Lei
- Molecular Genetics Key Laboratory of China Tobacco, China National Tobacco Corporation, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Wei Chang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Huina Zhao
- Molecular Genetics Key Laboratory of China Tobacco, China National Tobacco Corporation, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Kai Zhang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Jing Yu
- Molecular Genetics Key Laboratory of China Tobacco, China National Tobacco Corporation, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Shizhou Yu
- Molecular Genetics Key Laboratory of China Tobacco, China National Tobacco Corporation, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Kai Cai
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Jie Zhang
- Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang, 550081, China
| | - Kun Lu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China.
- Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China.
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China.
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Wu S, Gao C, Pan H, Wei K, Li D, Cai K, Zhang H. Advancements in Tobacco (Nicotiana tabacum L.) Seed Oils for Biodiesel Production. Front Chem 2022; 9:834936. [PMID: 35118052 PMCID: PMC8804693 DOI: 10.3389/fchem.2021.834936] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 12/14/2021] [Accepted: 12/27/2021] [Indexed: 11/15/2022] Open
Abstract
With the increasing demand for fossil fuels, decreasing fossil fuel reserves and deteriorating global environment, humanity urgently need to explore new clean and renewable energy to replace fossil fuel resources. Biodiesel, as an environmentally friendly fuel that has attracted considerable attention because of its renewable, biodegradable, and non-toxic superiority, seems to be a solution for future fuel production. Tobacco (Nicotiana tabacum L.), an industrial crop, is traditionally used for manufacturing cigarettes. More importantly, tobacco seed is also widely being deemed as a typical inedible oilseed crop for the production of second-generation biodiesel. Advancements in raw material and enhanced production methods are currently needed for the large-scale and sustainable production of biodiesel. To this end, this study reviews various aspects of extraction and transesterification methods, genetic and agricultural modification, and properties and application of tobacco biodiesel, while discussing the key problems in tobacco biodiesel production and application. Besides, the proposals of new ways or methods for producing biodiesel from tobacco crops are presented. Based on this review, we anticipate that this can further promote the development and application of biodiesel from tobacco seed oil by increasing the availability and reducing the costs of extraction, transesterification, and purification methods, cultivating new varieties or transgenic lines with high oilseed contents, formulating scientific agricultural norms and policies, and improving the environmental properties of biodiesel.
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Affiliation(s)
- Shengjiang Wu
- Guizhou Academy of Tobacco Science, Upland Flue-cured Tobacco Quality and Ecology Key Laboratory, CNTC, Guiyang, China
| | - Chuanchuan Gao
- Guizhou Tobacco Quality Supervision and Test Station, Guiyang, China
| | - Hu Pan
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, China
| | - Kesu Wei
- Guizhou Academy of Tobacco Science, Upland Flue-cured Tobacco Quality and Ecology Key Laboratory, CNTC, Guiyang, China
| | - Delun Li
- Guizhou Academy of Tobacco Science, Upland Flue-cured Tobacco Quality and Ecology Key Laboratory, CNTC, Guiyang, China
| | - Kai Cai
- Guizhou Academy of Tobacco Science, Upland Flue-cured Tobacco Quality and Ecology Key Laboratory, CNTC, Guiyang, China
- *Correspondence: Kai Cai, ; Heng Zhang,
| | - Heng Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, China
- *Correspondence: Kai Cai, ; Heng Zhang,
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Li S, Huang S, Cai K, Li Y, Lv J, Ma X. Importance of metal location in M-H zeolite for synergistically catalyzing dimethyl ether carbonylation. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2021.11.019] [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: 11/03/2022]
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Liu J, Chen Y, Cai K, Gong Y. Association of metabolic syndrome with cardiovascular outcomes in hypertensive patients: a systematic review and meta-analysis. J Endocrinol Invest 2021; 44:2333-2340. [PMID: 34152572 DOI: 10.1007/s40618-021-01603-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/22/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE The association between metabolic syndrome (MetS) and cardiovascular outcomes in patients with hypertension is still controversial. This meta-analysis sought to evaluate the association of MetS with cardiovascular outcomes in hypertensive patients. METHODS Two authors comprehensively searched PubMed and Embase databases from their inception to April 18, 2020 for the longitudinal studies that evaluated the association of MetS with cardiovascular outcomes in patients with hypertension. The main outcomes were major adverse cardiovascular events (myocardial infarction, revascularization, stroke, hospitalization due to heart failure, etc.) and stroke. RESULTS Eight studies consisting of 36,614 hypertensive patients were identified and analyzed. Meta-analysis indicated that MetS was associated with an increased risk of major adverse cardiovascular events (risk ratio [RR] 1.55; 95% confidence intervals [CI] 1.28-1.87), cardiovascular mortality (RR 1.44; 95%CI 1.13-1.82), and stroke (RR 1.46; 95%CI 1.22-1.75), respectively. Sensitivity analysis further confirmed the robustness of the prognostic value of MetS. CONCLUSIONS MetS is associated with higher risk of major adverse cardiovascular events, cardiovascular mortality, and stroke in patients with hypertension. Determination of MetS may contribute to improving cardiovascular risk stratification in hypertension.
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Affiliation(s)
- J Liu
- Department of Cardiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, 264100, China
| | - Y Chen
- Department of General Practice, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - K Cai
- Department of General Practice, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Y Gong
- Department of General Practice, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
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Cai K, Zhao Y, Zhao L, Phan N, Hou Y, Cheng X, Witman GB, Nicastro D. Structural organization of the C1b projection within the ciliary central apparatus. J Cell Sci 2021; 134:272503. [PMID: 34651179 DOI: 10.1242/jcs.254227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 09/29/2021] [Indexed: 12/23/2022] Open
Abstract
Motile cilia have a '9+2' structure containing nine doublet microtubules and a central apparatus (CA) composed of two singlet microtubules with associated projections. The CA plays crucial roles in regulating ciliary motility. Defects in CA assembly or function usually result in motility-impaired or paralyzed cilia, which in humans causes disease. Despite their importance, the protein composition and functions of most CA projections remain largely unknown. Here, we combined genetic, proteomic and cryo-electron tomographic approaches to compare the CA of wild-type Chlamydomonas reinhardtii with those of three CA mutants. Our results show that two proteins, FAP42 and FAP246, are localized to the L-shaped C1b projection of the CA, where they interact with the candidate CA protein FAP413. FAP42 is a large protein that forms the peripheral 'beam' of the C1b projection, and the FAP246-FAP413 subcomplex serves as the 'bracket' between the beam (FAP42) and the C1b 'pillar' that attaches the projection to the C1 microtubule. The FAP246-FAP413-FAP42 complex is essential for stable assembly of the C1b, C1f and C2b projections, and loss of these proteins leads to ciliary motility defects.
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Affiliation(s)
- Kai Cai
- Departments of Cell Biology and Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75231, USA
| | - Yanhe Zhao
- Departments of Cell Biology and Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75231, USA
| | - Lei Zhao
- Division of Cell Biology and Imaging, Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Nhan Phan
- Departments of Cell Biology and Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75231, USA
| | - Yuqing Hou
- Division of Cell Biology and Imaging, Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Xi Cheng
- Division of Cell Biology and Imaging, Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - George B Witman
- Division of Cell Biology and Imaging, Department of Radiology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Daniela Nicastro
- Departments of Cell Biology and Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75231, USA
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Wu Y, Meng L, Cai K, Zhao J, He S, Shen J, Wei Q, Wang Z, Sooranna S, Li H, Song J. A Tumor-Infiltration CD8+ T Cell-Based Gene Signature for Facilitating the Prognosis and Estimation of Immunization Responses in HPV+ Head and Neck Squamous Cell Cancer. Front Oncol 2021; 11:749398. [PMID: 34650931 PMCID: PMC8507562 DOI: 10.3389/fonc.2021.749398] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 09/09/2021] [Indexed: 11/30/2022] Open
Abstract
Background CD8+ T cells, which play a vital role in response to adaptive immunity, are closely related to the immunization responses to kill tumor cells. Understanding the effects exerted by tumor-infiltrated CD8+ T cells in HPV+ and HPV- head and neck squamous cell carcinoma (HNSCC) patients is critical for predicting their prognosis as well as their responses towards immunization-related therapy. Materials and Methods HNSCC single cell transcriptome was used to screen for differentially expressed genes (DEGs) based on CD8+ T cells. A gene signature associated with CD8+ T cells was built and verified with the cancer genome atlas dataset with a view to predicting the prognosis of HNSCC patients. Risk scores were calculated for HNSCC cases and categorized into either high- or low-risk cohorts. The prognosis-correlated data of the risk scores were analyzed by using Kaplan-Meier survival curves and multi-variate Cox regression plots. In addition, the possibility of using the genetic profiles to predict responses toward immunization-related therapy was explored. Results From the DEGs screened from the sequencing of single-cell RNA, a gene signature of 4 genes (ACAP1, ANKRD28, C12orf75, and M6PR) were identified. It was seen that these genes could predict overall survival in HPV+ HNSCC patients. In addition, high- and low-risk HPV+ HNSCC patients showed marked differences in their CD8+ T-cell infiltration due to immunization when clinical characteristics were taken into consideration. This correlated with their immunization therapy responses. Conclusions Our work provides insights into explaining the restricted responses of current immunization checkpoint inhibiting substances in HPV+ HNSCC patients. A novel genetic signature to predict the prognosis and immunization-correlated therapeutic responses is presented. This will provide potential new therapeutic opportunities for HPV+ HNSCC patients.
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Affiliation(s)
- Yingning Wu
- Medical Imaging Center, The First Affiliated Hospital of Jinan University, Guangzhou, China.,Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Radiation, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Lingzhang Meng
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Kai Cai
- Radiation Therapy Center, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, China
| | - Jingjie Zhao
- Life Science and Clinical Research Center, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Siyuan He
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Jiajia Shen
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Qiuju Wei
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,School of Pharmacy, Youjiang Medical University for Nationalities, Baise, China
| | - Zechen Wang
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Suren Sooranna
- Department of Metabolism, Digestion and Reproduction, Imperial College London, Chelsea & Westminster Hospital, London, United Kingdom
| | - Hengguo Li
- Medical Imaging Center, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jian Song
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Radiation Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Zhao Y, Cao Y, Wang S, Cai K, Xu K. COVID-19 and gastrointestinal symptoms. Br J Surg 2021; 108:e319. [PMID: 34021308 PMCID: PMC8239246 DOI: 10.1093/bjs/znab175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yang F, Zhao J, Luo X, Li T, Wang Z, Wei Q, Lu H, Meng Y, Cai K, Lu L, Lu Y, Chen L, Sooranna SR, Luo L, Song J, Meng L. Transcriptome Profiling Reveals B-Lineage Cells Contribute to the Poor Prognosis and Metastasis of Clear Cell Renal Cell Carcinoma. Front Oncol 2021; 11:731896. [PMID: 34485161 PMCID: PMC8416254 DOI: 10.3389/fonc.2021.731896] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 07/26/2021] [Indexed: 01/27/2023] Open
Abstract
Although immune therapy can improve the treatment of clear cell renal cell carcinoma (ccRCC) significantly, there are still a large proportion of ccRCC patients who progress to metastasis. Targeting the pro-metastatic immune cell in the ccRCC microenvironment could provide a solution to this problem. In this study, B cells in ccRCC biopsies were identified by using scRNA-seq and flow cytometry. The findings indicated the presence of a pro-metastatic B cell type which could be further classified into 3 subpopulations, MARCH3, B2M and DTWD1, based on their large-scaled genetic profiles, rather than traditional Immature/Mature ones. Although all of the 3 subpopulations appeared to contribute to distant metastasis, B cell (B2M) was deemed to be the most essential. Moreover, STX16, CLASRP, ATIC, ACIN1 and SEMA4B, were genes found to be commonly up-regulated in the 3 subpopulations and this was correlated to a poor prognosis of ccRCC. Furthermore, the heterogeneity of plasma cells in ccRCC was also found to contribute to metastasis of the disease. This study offers potential novel therapeutic targets against distant metastasis of cancers, and can help to improve the therapeutic efficiency of ccRCC patients.
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Affiliation(s)
- Fafen Yang
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Renal Diseases, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Jingjie Zhao
- Life Science and Clinical Research Center, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Xiuzhuang Luo
- Department of Pediatrics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Tong Li
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Renal Diseases, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Zechen Wang
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Qiuju Wei
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,School of Pharmacy, Youjiang Medical University for Nationalities, Baise, China
| | - Heming Lu
- Department of Radiation Oncology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Yiliang Meng
- Department of Oncology, People's Hospital of Baise, Baise, China
| | - Kai Cai
- Radiation Therapy Center , The First Affiliated Hospital of Guangxi University of Chinese Medicine, Baise, China
| | - Liuying Lu
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Yushi Lu
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
| | - Lifen Chen
- Department of Gynaecology and Obstetrics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Suren Rao Sooranna
- Department of Metabolism, Digestion and Reproduction, Imperial College London, Chelsea & Westminster Hospital, London, United Kingdom
| | - Linxue Luo
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Gynaecology and Obstetrics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Jian Song
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China.,Department of Radiation Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Lingzhang Meng
- Center for Systemic Inflammation Research (CSIR), School of Preclinical Medicine, Youjiang Medical University for Nationalities, Baise, China
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Wang B, Zhang N, Gong P, Li J, Wang X, Li X, Wang F, Cai K, Zhang X. In vitro assays on the susceptibility of four species of nematophagous fungi to anthelmintics and chemical fungicides/antifungal drug. Lett Appl Microbiol 2021; 73:124-131. [PMID: 33590540 DOI: 10.1111/lam.13462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 12/01/2022]
Abstract
Using nematophagous fungi for the biological control of animal parasitic nematodes will become one of the most promising strategies in the search for alternative chemical drugs. The purpose of this study was to check the in vitro activity of four anthelmintics, four chemical fungicides and two antifungal drugs on the spore germination of nematophagous fungi: Duddingtonia flagrans (SF170), Arthrobotrys oligospora (447), Arthrobotrys superba (435) and Arthrobotrys sp. (PS011). A modified 24-well cell culture plate assay was conducted to evaluate the susceptibility of nematophagous fungi against drugs tested by calculating the effective middle concentrations (EC50 ) of each tested drug to inhibit the germination of fungal spores. EC50 ranged between 0·7 and 47·2 μg ml-1 for fenbendazole, thiabendazole and ivermectin, except levamisole (546·5-4057·8 μg ml-1 ). EC50 of tested fungicides was 0·6-2·3 μg ml-1 for carbendazim, 55·9-247·4 μg ml-1 for metalaxyl, 24·4-45·2 μg ml-1 for difenoconazole, and 555·9-1438·3 μg ml-1 for pentachloronitrobenzene (PCNB). EC50 of two antifungal drugs was 0·03-3·4 μg ml-1 for amphotericin B and 0·3-10·9 μg ml-1 for ketoconazole. The results showed that 10 tested drugs, except for levamisole and PCNB, had in vitro inhibitory effects on nematophagous fungi. The chlamydospores of D. flagrans had the highest sensitivity to nine tested drugs, except for ketoconazole.
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Affiliation(s)
- B Wang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - N Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - P Gong
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - J Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - X Wang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - X Li
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - F Wang
- Medical College of Yan'an University, Yan'an University, Yan'an, China
| | - K Cai
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - X Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
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Cheng Z, Huang S, Li Y, Cai K, Wang Y, Wang MY, Lv J, Ma X. Role of Brønsted Acid Sites within 8-MR of Mordenite in the Deactivation Roadmap for Dimethyl Ether Carbonylation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00159] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Zaizhe Cheng
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
- Institute of Industrial Catalysis, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, China
| | - Shouying Huang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Ying Li
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Kai Cai
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Yue Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Mei-yan Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Jing Lv
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Xinbin Ma
- Key Laboratory for Green Chemical Technology of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
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Shi X, Dong X, Zhai J, Liu X, Lu D, Ni Z, Chen A, Cai K. P58.01 Systematic Identification of Methylation Sites Associated with Lung Adenocarcinoma Prognosis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.949] [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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Shi X, Dong X, Zhai J, Liu X, Lu D, Ni Z, Chen A, Cai K. P66.02 A Novel Risk Model of Lung Adenocarcinoma Based on Lung Cancer Susceptibility Genes. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1001] [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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Shi X, Dong X, Zhai J, Liu X, Lu D, Ni Z, Chen A, Cai K. P54.01 Development and Validation of a Novel Nomogram Integrated with Lung Cancer Susceptibility Genes for Squamous Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chang W, Zhao H, Yu S, Yu J, Cai K, Sun W, Liu X, Li X, Yu M, Ali S, Zhang K, Qu C, Lei B, Lu K. Comparative transcriptome and metabolomic profiling reveal the complex mechanisms underlying the developmental dynamics of tobacco leaves. Genomics 2020; 112:4009-4022. [PMID: 32650092 DOI: 10.1016/j.ygeno.2020.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/31/2020] [Accepted: 07/02/2020] [Indexed: 12/22/2022]
Abstract
Although the leaf is the most important photosynthetic organ in most plants, many of the molecular mechanisms underlying leaf developmental dynamics remain to be explored. To better understand the transcriptional regulatory mechanisms involved in leaf development, we conducted comparative transcriptomic and metabolomic analysis of leaves from seven positions on tobacco (Nicotiana tabacum) plants. A total of 35,622 unique differentially expressed genes and 79 metabolites were identified. A time-series expression analysis detected two interesting transcriptional profiles, one comprising 10,197 genes that displayed continual up-regulation during leaf development and another comprising 4696 genes that displayed continual down-regulation. Combining these data with co-expression network results identified four important regulatory networks involved in photorespiration and the tricarboxylic acid cycle; these networks may regulate carbon/nitrogen balance during leaf development. We also found that the transcription factor NtGATA5 acts as a hub associated with C and N metabolism and chloroplast development during leaf development through regulation of phytohormones. Furthermore, we investigated the transcriptional dynamics of genes involved in the auxin, cytokinin, and jasmonic acid biosynthesis and signaling pathways during tobacco leaf development. Overall, our study greatly expands the understanding of the regulatory network controlling developmental dynamics in plant leaves.
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Affiliation(s)
- Wei Chang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Huina Zhao
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China; Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Shizhou Yu
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Jing Yu
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Kai Cai
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China; Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Wei Sun
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Xumei Liu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Xiaodong Li
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Mengna Yu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Shahzad Ali
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Kai Zhang
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China
| | - Cunmin Qu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China
| | - Bo Lei
- Molecular Genetics Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China; Upland Flue-Cured Tobacco Quality and Ecology Key Laboratory of China Tobacco, Guizhou Academy of Tobacco Science, Guiyang 550081, China; College of Life Sciences, Yangtze University, Jingzhou 434025, Hubei, China.
| | - Kun Lu
- College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400715, China; College of Life Sciences, Yangtze University, Jingzhou 434025, Hubei, China.
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Zhou FR, Pan ZP, Shen F, Huang LQ, Cui JH, Cai K, Guo XL. Long noncoding RNA DLX6-AS1 functions as a competing endogenous RNA for miR-577 to promote malignant development of colorectal cancer. Eur Rev Med Pharmacol Sci 2020; 23:3742-3748. [PMID: 31115000 DOI: 10.26355/eurrev_201905_17800] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Recent researches have proved that long noncoding RNAs (lncRNAs) play essential roles in tumorigenesis. The aim of this study was to investigate the exact role of lncRNA DLX6-AS1 in the development of colorectal cancer (CRC), and to explore the possible mechanism. PATIENTS AND METHODS DLX6-AS1 expression in CRC tissues was detected by Real Time-quantitative Polymerase Chain Reaction (RT-qPCR). Function assays were conducted to detect the effect of DLX6-AS1 on the proliferation and metastasis of CRC in vitro. Furthermore, luciferase reporter gene assay and RNA immunoprecipitation assay (RIP) were used to explore the underlying mechanism of DLX6-AS1. RESULTS DLX6-AS1 expression in CRC samples was significantly higher than that of adjacent tissues. Loss of DLX6-AS1 markedly inhibited the proliferation, migration, and invasion of CRC cells. Furthermore, luciferase reporter gene assay and RIP assay showed that DLX6-AS1 acted as a competing endogenous RNA via sponging miR-577 in CRC. CONCLUSIONS DLX6-AS1 could promote the proliferation, migration, and invasion of CRC by sponging miR-577, which might offer a potential therapeutic target for CRC.
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Affiliation(s)
- F-R Zhou
- Department of Anorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou, China.
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Cai K, Zhang W, Foda MF, Li X, Zhang J, Zhong Y, Liang H, Li H, Han H, Zhai T. Miniature Hollow Gold Nanorods with Enhanced Effect for In Vivo Photoacoustic Imaging in the NIR-II Window. Small 2020; 16:e2002748. [PMID: 32780938 DOI: 10.1002/smll.202002748] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [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: 04/30/2020] [Revised: 06/24/2020] [Indexed: 05/25/2023]
Abstract
The miniaturization of gold nanorods exhibits a bright prospect for intravital photoacoustic imaging (PAI) and the hollow structure possesses a better plasmonic property. Herein, miniature hollow gold nanorods (M-AuHNRs) (≈46 nm in length) possessing strong plasmonic absorbance in the second near-infrared (NIR-II) window (1000-1350 nm) are developed, which are considered as the most suitable range for the intravital PAI. The as-prepared M-AuHNRs exhibit 3.5 times stronger photoacoustic signal intensity than the large hollow Au nanorods (≈105 nm in length) at 0.2 optical density under 1064 nm laser irradiation. The in vivo biodistribution measurement shows that the accumulation in tumor of miniature nanorods is twofold as high as that of the large counterpart. After modifying with a tumor-targeting molecule and fluorochrome, in living tumor-bearing mice, the M-AuHNRs group gives a high fluorescence intensity in tumors, which is 3.6-fold that of the large ones with the same functionalization. Moreover, in the intravital PAI of living tumor-bearing mice, the M-AuHNRs generate longer-lasting and stronger photoacoustic signal than the large counterpart in the NIR-II window. Overall, this study presents the fabrication of M-AuHNRs as a promising contrast agent for intravital PAI.
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Affiliation(s)
- Kai Cai
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China
| | - Weiyun Zhang
- State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Mohamed F Foda
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Xuyu Li
- State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Jin Zhang
- State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yeteng Zhong
- Department of Chemistry and Bio-X, Stanford University, Stanford, CA, 94305, USA
| | - Huageng Liang
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China
| | - Huiqiao Li
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China
| | - Heyou Han
- State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Tianyou Zhai
- Department of Urology, Union Hospital, Tongji Medical College, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China
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Cai K, Zhao H, Yin R, Lin Y, Lei B, Wang A, Pan W, Cai B, Gao W, Wang F. Chiral determination of nornicotine, anatabine and anabasine in tobacco by achiral gas chromatography with (1S)-(-)-camphanic chloride derivatization: Application to enantiomeric profiling of cultivars and curing processes. J Chromatogr A 2020; 1626:461361. [PMID: 32797840 DOI: 10.1016/j.chroma.2020.461361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/01/2020] [Accepted: 06/19/2020] [Indexed: 10/24/2022]
Abstract
The alkaloid enantiomers are well-known to have different physiological and pharmacological effects, and to play an important role in enantioselectivity metabolism with enzymes catalysis in tobacco plants. Here, we developed an improved method for simultaneous and high-precision determination of the individual enantiomers of nornicotine, anatabine and anabasine in four tobacco matrices, based on an achiral gas chromatography-nitrogen phosphorus detector (GCNPD) with commonly available Rtx-200 column using (1S)-(-)-camphanic chloride derivatization. The method development consists of the optimization of extraction and derivatization, screening of achiral column, analysis of the fragmentation mechanisms and evaluation of matrix effect (ME). Under the optimized experimental conditions, the current method exhibited excellent detection capability for the alkaloid enantiomers, with coefficients of determination (R2) > 0.9989 and normality test of residuals P > 0.05 in linear regression parameters. The ME can be neglected for the camphanic derivatives. The limit of detection (LOD) and limit of quantitation (LOQ) ranged from 0.087 to 0.24 μg g - 1 and 0.29 to 0.81 μg g - 1, respectively. The recoveries and within-laboratory relative standard deviations (RSDR) were 94.3%~104.2% and 0.51%~3.89%, respectively. The developed method was successfully applied to determine the enantiomeric profiling of cultivars and curing processes. Tobacco cultivars had a significant impact on the nornicotine, anatabine, anabasine concentration and enantiomeric fraction (EF) of (R)-nornicotine, whereas the only significant change induced by the curing processes was an increase in the EF of (R)-anabasine.
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Affiliation(s)
- Kai Cai
- Guizhou Academy of Tobacco Science, Guiyang 550081, China; College of Resources and Environment, Southwest University, Chongqing 400715, China
| | - Huina Zhao
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Runsheng Yin
- State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 55081, China
| | - Yechun Lin
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Bo Lei
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Anping Wang
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological, Environment of Guizhou Province, Guizhou Normal University, Guiyang, Guizhou 550025, China
| | - Wenjie Pan
- Guizhou Academy of Tobacco Science, Guiyang 550081, China
| | - Bin Cai
- Haikou Cigar Research Institute, Hainan Provincial Branch of China National Tobacco Corporation, Haikou 571100, China
| | - Weichang Gao
- Guizhou Academy of Tobacco Science, Guiyang 550081, China.
| | - Feng Wang
- Guizhou Academy of Tobacco Science, Guiyang 550081, China.
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Zhou FR, Pan ZP, Shen F, Huang LQ, Cui JH, Cai K, Guo XL. Long noncoding RNA DLX6-AS1 functions as a competing endogenous RNA for miR-577 to promote malignant development of colorectal cancer. Eur Rev Med Pharmacol Sci 2020; 24:7540. [PMID: 32744645 DOI: 10.26355/eurrev_202007_22173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Since this article has been suspected of research misconduct and the corresponding authors did not respond to our request to prove originality of data and figures, "Long noncoding RNA DLX6-AS1 functions as a competing endogenous RNA for miR-577 to promote malignant development of colorectal cancer, by F.-R. Zhou, Z.-P. Pan, F. Shen, L.-Q. Huang, J.-H. Cui, K. Cai, X.-L. Guo, published in Eur Rev Med Pharmacol Sci 2019; 23 (9): 3742-3748-DOI: 10.26355/eurrev_201905_17800-PMID: 31115000" has been withdrawn. The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/17800.
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Affiliation(s)
- F-R Zhou
- Department of Anorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Zeng B, Zhang Y, Zhang A, Qiao D, Ren J, Li M, Cai K, Zhang J, Huang L. Transcriptome profiling of two Dactylis glomerata L. cultivars with different tolerance in response to submergence stress. Phytochemistry 2020; 175:112378. [PMID: 32315838 DOI: 10.1016/j.phytochem.2020.112378] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Submergence is one of the environmental stresses that limit plant growth and development. Dactylis glomerata L. is an important cool-season forage grass globally. To investigate the genes related to submergence response and the molecular mechanism associated with submergence tolerance, the transcriptome of D. glomerata in response to waterlogging treatment was analyzed. RNA-sequencing was performed in two D. glomerata cultivars, submergence tolerant 'Dianbei' and submergence sensitive 'Anba'. A total of 50,045 unique genes matched the known proteins in the NCBI nr database by BLAST searches and 60.8% (30,418) of these genes were annotated with GO terms. Among these, 1395 genes only differentially expressed in 'Dianbei' and 18 genes shown different expression all the time were detected between the submergence tolerant 'Dianbei' and sensitive 'Anba'. Gene ontology (GO) and KEGG pathway enrichment analyses demonstrated that the DEGs were mainly implicated in oxidation-reduction system, nucleic acid binding transcription factor activity, and glycerol kinase activity. The D. glomerata assembled transcriptome provided substantial molecular resource for further genomic analysis of forage grasses in response to submergence stress. The significant difference in expression of specific unigenes may account for waterlogging tolerance or acclimation in the two different D. glomerata cultivars. This study provided new insights into the molecular basis of submergence tolerance in D. glomerata.
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Affiliation(s)
- Bing Zeng
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Yajie Zhang
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Ailing Zhang
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Dandan Qiao
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Juncai Ren
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Mingyang Li
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Kai Cai
- College of Animal Science, Rongchang Campus, Southwest University, Chongqing, 402460, China
| | - Jinhua Zhang
- Guizhou animal Husbandry and Veterinary Institute, Guiyang, 550005, China.
| | - Linkai Huang
- Department of Grassland Science, Faculty of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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Abstract
An outbreak of new severe acute respiratory syndrome coronavirus disease, coronavirus disease 2019 (COVID-19), has emerged during December 2019. The ongoing outbreak in Wuhan City spread rapidly throughout China, where the fatality rate ranged from 2.1 to 4.9%. Due to its high transmissibility, the World Health Organization (WHO) declared a public health emergency of international concern on 30 January 2020. The current outbreak has the potential to become the first pandemic of the new millennium. Most patients who were first diagnosed with COVID-19 worked at or lived in the vicinity of the local Huanan Seafood Wholesale Market, where live animals were also on sale. The concerted efforts of Chinese scientists led to the independent isolation from patients and identification of a novel coronavirus, SARS coronavirus 2 (SARS-CoV-2), on 6 January 2020; this has been an important step in the development of treatment. The purpose of this article is to overview the history, epidemiology, clinical characteristics, diagnosis, and treatment of COVID 2019 reported in recently published studies. Based on the results of virus genome sequencing and a model of the interaction between host cells and the virus, we propose several possible targets for antiviral drugs, which may provide new ideas for epidemic control and vaccine development. Keywords: 2019 novel coronavirus; pneumonia; SARS-CoV-2; Coronaviridae; COVID-19.
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