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Wang R, Lin Y', Zhang C, Wu H, Jin Q, Guo J, Cao H, Tan D, Wu T. Fine mapping and analysis of a candidate gene controlling Phytophthora blight resistance in cucumber. Plant Biol (Stuttg) 2024. [PMID: 38607927 DOI: 10.1111/plb.13648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
Cucumber blight is a destructive disease. The best way to control this disease is resistance breeding. This study focuses on disease resistance gene mapping and molecular marker development. We used the resistant cucumber, JSH, and susceptible cucumber, B80, as parents to construct F2 populations. Bulked segregant analysis (BSA) combined with specific length amplified fragment sequencing (SLAF-seq) were used, from which we developed cleaved amplified polymorphic sequence (CAPs) markers to map the resistance gene. Resistance in F2 individuals showed a segregation ratio of resistance:susceptibility close to 3:1. The gene in JSH resistant cucumber was mapped to an interval of 9.25 kb, and sequencing results for the three genes in the mapped region revealed three mutations at base sites 225, 302, and 591 in the coding region of Csa5G139130 between JSH and B80, but no mutations in coding regions of Csa5G139140 and Csa5G139150. The mutations caused changes in amino acids 75 and 101 of the protein encoded by Csa5G139130, suggesting that Csa5G139130 is the most likely resistance candidate gene. We developed a molecular marker, CAPs-4, as a closely linked marker for the cucumber blight resistance gene. This is the first report on mapping of a cucumber blight resistance gene and will provideg a useful marker for molecular breeding of cucumber resistance to Phytophthora blight.
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Affiliation(s)
- R Wang
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - Y 'e Lin
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - C Zhang
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - H Wu
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - Q Jin
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou, China
| | - J Guo
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - H Cao
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - D Tan
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
| | - T Wu
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences (IFA, GDAAS), Guangzhou, China
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2
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Ao S, Huang G, Tang X, Zhu Z, Han J, Wang F, Zhai W. Anti-immunoglobulin E provides an additional therapy to conventional steroids for Kimura's disease. J Dermatol 2024; 51:602-606. [PMID: 37950550 DOI: 10.1111/1346-8138.17021] [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: 04/03/2023] [Revised: 10/04/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023]
Abstract
Kimura's disease (KD) is a chronic inflammatory disease characterized by painless subcutaneous head and neck swelling, eosinophilia, and elevated serum immunoglobulin (Ig) E levels. There are various therapies, including surgery, radiation, systemic steroids, and immune suppressants, but their efficacy remains moderate due to the high recurrence rate. Biologics, like monoclonal antibodies, have shown tremendous effectiveness for chronic inflammatory diseases. Omalizumab is a monoclonal antibody against IgE and has not been approved for KD so far. We describe two refractory KD cases that responded to a small dose of steroids plus omalizumab. Additionally, we reviewed another 13 KD cases that were treated with biologics, including omalizumab, rituximab, dupilumab, and mepolizumab. The results indicate that biologics provide an alternative treatment strategy for KD.
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Affiliation(s)
- Suiting Ao
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Shandong Provincial Hospital for Skin Diseases & Shandong Provincial Institute of Dermatology and Venereology, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Gege Huang
- Department of Dermatology, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xuhua Tang
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhe Zhu
- Department of Pathology and Cell Biology, New York-Presbyterian Hospital, Columbia University Irving Medical Center, New York, New York, USA
| | - Jiande Han
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Fang Wang
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wanying Zhai
- Department of Dermatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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3
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Xie F, Ma Z, Zhou J. Optimizing Thermoelectric Performance of Hybrid Crystals Bi 2O 2Se 1-xTe x in the Bi 2O 2X System. Materials (Basel) 2024; 17:1509. [PMID: 38612024 PMCID: PMC11012295 DOI: 10.3390/ma17071509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
In addressing the global need for sustainable energy conversion, this study presents a breakthrough in thermoelectric materials research by optimizing the Bi2O2Se1-xTex system in the Bi2O2Se/Bi2O2Te pseudobinary series. Leveraging the principles of innovative transport mechanisms and defect engineering, we introduce tellurium (Te) doping into Bi2O2Se to enhance its thermoelectric properties synergistically. With the help of various advanced characterization tools such as XRD, SEM, TEM, XPS, FTIR, TGA, LFA, and DSC, combined with relevant resistance and density measurement techniques, we conducted an in-depth exploration of the complex interactions between various factors within thermoelectric materials. We recognize that the balance and synergy of these factors in the thermoelectric conversion process are crucial to achieving efficient energy conversion. Through systematic research, we are committed to revealing the mechanisms of these interactions and providing a solid scientific foundation for the optimal design and performance enhancement of thermoelectric materials. Finally, the advantage coefficient (ZT) of the thermoelectric material has been significantly improved. The crystallographic analysis confirms the formation of a continuous series of mixed crystals with varying Te concentrations, adhering to Vegard's law and exhibiting significant improvements in electrical and thermal conductivities. The Bi2O2Se1-xTex crystals, particularly the Bi2O2Se0.6Te0.4 composition, demonstrate a peak ZT of 0.86 at 373 K. This achievement aligns with recent advancements in defect-enabled mechanisms and band convergence and sets a new standard for high-performance thermoelectrics. The study's findings contribute significantly to the ongoing quest for efficient thermal-to-electrical energy conversion, offering a promising avenue for future sustainable energy technologies.
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Affiliation(s)
| | | | - Jian Zhou
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, Laboratory of Advanced Electronics and Fiber Materials, Sun Yat-Sen University, Guangzhou 510275, China; (F.X.); (Z.M.)
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Yang Q, Lu W, Luo Y, Li J, Huang X, You T. A Novel Predictor of the Length and Size of ACL Grafts in Chinese Han Adults for ACL Reconstruction: An MRI Study. Orthop Surg 2024; 16:481-489. [PMID: 38174408 PMCID: PMC10834193 DOI: 10.1111/os.13976] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 11/25/2023] [Accepted: 11/26/2023] [Indexed: 01/05/2024] Open
Abstract
OBJECTIVE Currently, there is no simple and valid method to predict the length and size of the native anterior cruciate ligament (ACL) in each adult patient who will undergo ACL reconstruction. This study aimed to develop an imaging prediction method that can predict the length and size of ACL grafts using the intact posterior cruciate ligament (PCL), in order to enhance the graft preparation individualized sizing. METHODS Three hundred and nineteen patients aged 18 years or older who underwent magnetic resonance imaging (MRI) of the knee at an orthopaedic clinic between September 9, 2021, and February 5, 2023, were included. The length, sagittal diameter, and coronal diameter of the ACL and PCL were measured in all patients, and F-test were performed to explore linear relationship between ligament measurements. RESULTS Equations were established to predict a variable of the native ACL for the corresponding variable of the intact PCL (i.e., sagittal diameter of the ACL = 4.32 + 1.08 × sagittal diameter of the PCL, and coronal diameter of the ACL = 2.45 + 0.59 × coronal diameter of the PCL, length of the male ACL = 10.92 + 0.64 × length of the male PCL, length of the female ACL = 11.76 + 0.58 × length of the female PCL) (R2 = 0.532; R2 = 0.417; R2 = 0.488; R2 = 0.509; respectively). CONCLUSIONS The length and size of the intact PCL in cases without PCL buckling are predictors of the length and size of the native ACL in adults, respectively. The use of this information to optimize graft diameter may lower the rates of ACL graft failure in the future.
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Affiliation(s)
- Qingjun Yang
- Peking University Shenzhen HospitalShenzhenChina
| | - Wenqian Lu
- Clinical Medical CollegeShenzhen UniversityShenzhenChina
| | - Yong Luo
- Clinical Medical CollegeShantou UniversityShantouChina
| | - Jiatong Li
- Clinical Medical CollegeShenzhen UniversityShenzhenChina
| | - Xiancheng Huang
- Clinical Medical College, Weifang Medical UniversityWeifangChina
| | - Tian You
- Peking University Shenzhen HospitalShenzhenChina
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Yang J, Ran T, Lin X, Xu J, Zhou S, Chen C, Huang P. Association between preoperative systemic immune inflammation index and postoperative sepsis in patients with intestinal obstruction: A retrospective observational cohort study. Immun Inflamm Dis 2024; 12:e1187. [PMID: 38353388 PMCID: PMC10865413 DOI: 10.1002/iid3.1187] [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: 11/08/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Sepsis is a severe complication that results in increased morbidity and mortality after intestinal obstruction surgery. This study examined the role of preoperative systemic immune inflammation index (SII) for postoperative sepsis in intestinal obstruction patients. METHODS Data on patients who underwent intestinal obstruction surgery were collected. SII was determined and separated into two groups (≤1792.19 and >1792.19) according to the optimal cut-off value of SII for postoperative sepsis. The odds ratio (OR) is calculated for the correlation between SII and postoperative sepsis. Additional analyses were used to estimate the robustness of SII. RESULTS A total of 371 intestinal obstruction patients undergoing surgery were included in the final cohort, and 60 (16.17%) patients developed postoperative sepsis. Patients with an SII >1792.19 had a significantly higher risk for developing postoperative sepsis after multivariable adjustment [adjusted odds ratio = 2.12, 95% confidence interval: [1.02-4.40]]. The analysis of interaction showed no correlation between the preoperative SII and postoperative sepsis regarding age, hypertension, American Society of Anesthesiologists classification, blood loss, albumin, hemoglobin, creatinine, and leukocyte (all interactions p > .05). In subgroup analysis, all statistically significant subgroups showed that SII was a risk factor for postoperative sepsis (all p < .05). The analyses of subgroups and interactions revealed that the interaction effect of a preoperative SII >1792.19 and postoperative sepsis remained significant. A sensitivity analysis confirmed the robustness of the results. CONCLUSIONS A preoperative SII > 1792.19 was a risk factor for postoperative sepsis in patients undergoing intestinal obstruction surgery.
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Affiliation(s)
- Jirong Yang
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Taojia Ran
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Xiaoyu Lin
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Jinyan Xu
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Shaoli Zhou
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Chaojin Chen
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
| | - Pinjie Huang
- Department of AnesthesiologyThe Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouPeople's Republic of China
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Li Y, Guo L, Zhang J, Tang X, Zhao F, Hu Y, Guo Y, Du X, Yang X, Lu C. Trajectories of spherical equivalent refraction from grades 1 to 4 in Chinese children. BMC Public Health 2023; 23:2500. [PMID: 38093233 PMCID: PMC10720137 DOI: 10.1186/s12889-023-17420-x] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 12/05/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND The development trajectories of children's SER remain unknown. This study aimed to characterize spherical equivalent refraction (SER) trajectories during grades 1-4 in Chinese children. METHODS This prospective cohort study included 1226 first-grade non-myopic children from 12 public primary schools, randomly selected in two districts in Guangzhou, China. From November 2018 to March 2022, four-wave ocular examinations and questionnaire surveys have been completed. The group-based trajectory modeling was used to explore SER trajectories in grades 1-4. RESULTS All five trajectories showed an upward trend and rose faster after grade 2. Children in the sharp-developing (n = 44), high-developing (n = 136), and rapid-developing (n = 237) myopia groups developed myopia before grades 2, 3, and 4, respectively. Their SER development speed remained at a relatively high level after myopia, almost consistent with that before myopia. Children in the moderate-developing (n = 418) and low-developing (n = 391) non-myopia groups did not develop myopia before grade 4. Some characteristics in grade 1 were independently associated with SER trajectories, including sex, axial length, number of parents with myopia, residence, academic achievement, and the duration of outdoor activity. Based on the baseline characteristics, we established the model predicting the probability of children belonging to each group. CONCLUSIONS Myopia interventions are best started in grade 1 or preschool age. If interventions are not taken in time, the latest intervention window might be in grades 1, 2, and 3 for children with a high probability of belonging to the sharp-developing, high-developing, and rapid-developing myopia groups, respectively. The above probabilities might be predicted using the model we established. Moreover, the interventions for myopic children shouldn't be ignored.
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Affiliation(s)
- Yanzhi Li
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Rd 2, Guangzhou, 510080, China
| | - Lan Guo
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Rd 2, Guangzhou, 510080, China
| | - Jiayu Zhang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Rd 2, Guangzhou, 510080, China
| | - Xianghua Tang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Rd 2, Guangzhou, 510080, China
| | - Feng Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, 54 Xianlie South Road, Guangzhou, 510060, China
| | - Yin Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, 54 Xianlie South Road, Guangzhou, 510060, China
| | - Yangfeng Guo
- Health Promotion Center for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, China
| | - Xueying Du
- Health Promotion Center for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou, China
| | - Xiao Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, 54 Xianlie South Road, Guangzhou, 510060, China.
| | - Ciyong Lu
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, 74 Zhongshan Rd 2, Guangzhou, 510080, China.
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Ou Z, Situ B, Huang X, Xue Y, He X, Li Q, Ou D, He B, Chen J, Huang Y, Deng L, Zhang M, Wang Q, Zheng L. Single-particle analysis of circulating bacterial extracellular vesicles reveals their biogenesis, changes in blood and links to intestinal barrier. J Extracell Vesicles 2023; 12:e12395. [PMID: 38050834 PMCID: PMC10696524 DOI: 10.1002/jev2.12395] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 03/01/2023] [Revised: 09/11/2023] [Accepted: 11/06/2023] [Indexed: 12/07/2023] Open
Abstract
Bacterial extracellular vesicles (BEVs) are nano-size particles secreted by bacteria that carry various bioactive components. These vesicles are thought to provide a new window into the mechanisms by which bacteria affect their hosts, but their fundamental proprieties within human remain poorly understood. Here, we developed a single-vesicle analytical platform that enabled BEV detection in complex biological samples of host. Using this platform, we found the presence of BEVs in the host circulation and they were mainly derived from gut microbes. We showed that the levels of circulating BEVs in humans significantly increased with aging due to an age-related increase in intestinal permeability. Significantly different levels of BEVs in blood were also found in patients with colorectal cancer and colitis. Together, our study provides new insights into circulating BEV biology and reveals their potential as a new class of biomarkers.
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Affiliation(s)
- Zihao Ou
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Bo Situ
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Xinyue Huang
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
- Zhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Yicong Xue
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Xiaojing He
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Qianbei Li
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Dejin Ou
- Department of Laboratory MedicineThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Bairong He
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Jing Chen
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Yiyao Huang
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Lulu Deng
- Medical Laboratory CenterGuangzhou Red Cross HospitalGuangzhouChina
| | - Minying Zhang
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
| | - Qian Wang
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
- Zhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Lei Zheng
- Department of Laboratory MedicineNanfang HospitalSouthern Medical UniversityGuangzhouChina
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Dong Z, Min F, Zhang S, Zhang H, Zeng T. EGR1-Driven METTL3 Activation Curtails VIM-Mediated Neuron Injury in Epilepsy. Neurochem Res 2023; 48:3349-3362. [PMID: 37268752 DOI: 10.1007/s11064-023-03950-8] [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: 01/06/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 06/04/2023]
Abstract
Uncovering mechanisms underlying epileptogenesis aids in preventing further epilepsy progression and to lessen seizure severity and frequency. The purpose of this study is to explore the antiepileptogenic and neuroprotective mechanisms of EGR1 in neuron injuries encountered in epilepsy. Bioinformatics analysis was conducted to identify the key genes related to epilepsy. The mice were rendered epileptic using the kainic acid protocol, followed by measurement of seizure severity, high amplitude and frequency, pathological changes of hippocampal tissues and neuron apoptosis. Furthermore, an in vitro epilepsy model was constructed in the neurons isolated from newborn mice, which was then subjected to loss- and gain-of-function investigations, followed by neuron injury and apoptosis assessment. Interactions among EGR1, METTL3, and VIM were analyzed by a series of mechanistic experiments. In the mouse and cell models of epilepsy, VIM was robustly induced. However, its knockdown reduced hippocampal neuron injury and apoptosis. Meanwhile, VIM knockdown decreased inflammatory response and neuron apoptosis in vivo. Mechanistic investigations indicated that EGR1 transcriptionally activated METTL3, which in turn downregulated VIM expression through m6A modification. EGR1 activated METTL3 and reduced VIM expression, thereby impairing hippocampal neuron injury and apoptosis, preventing epilepsy progression. Taken together, this study demonstrates that EGR1 alleviates neuron injuries in epilepsy by inducing METTL3-mediated inhibition of VIM, which provides clues for the development of novel antiepileptic treatments.
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Affiliation(s)
- Zhaofei Dong
- Department of Neurology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518033, People's Republic of China
| | - Fuli Min
- Department of Neurology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, Guangdong Province, People's Republic of China
| | - Sai Zhang
- Department of Neurology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, Guangdong Province, People's Republic of China
| | - Huili Zhang
- Department of Neurology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, Guangdong Province, People's Republic of China
| | - Tao Zeng
- Department of Neurology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, 510180, Guangdong Province, People's Republic of China.
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Li Y, Cai J, Liu Y, Li C, Chen X, Wong WL, Jiang W, Qin Y, Zhang G, Hou N, Yuan W. CcpA-Knockout Staphylococcus aureus Induces Abnormal Metabolic Phenotype via the Activation of Hepatic STAT5/PDK4 Signaling in Diabetic Mice. Pathogens 2023; 12:1300. [PMID: 38003764 PMCID: PMC10674825 DOI: 10.3390/pathogens12111300] [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: 08/25/2023] [Revised: 10/20/2023] [Accepted: 10/28/2023] [Indexed: 11/26/2023] Open
Abstract
Catabolite control protein A (CcpA), an important global regulatory protein, is extensively found in S. aureus. Many studies have reported that CcpA plays a pivotal role in regulating the tricarboxylic acid cycle and pathogenicity. Moreover, the CcpA-knockout Staphylococcus aureus (S. aureus) in diabetic mice, compared with the wild-type, showed a reduced colonization rate in the tissues and organs and decreased inflammatory factor expression. However, the effect of CcpA-knockout S. aureus on the host's energy metabolism in a high-glucose environment and its mechanism of action remain unclear. S. aureus, a common and major human pathogen, is increasingly found in patients with obesity and diabetes, as recent clinical data reveal. To address this issue, we generated CcpA-knockout S. aureus strains with different genetic backgrounds to conduct in-depth investigations. In vitro experiments with high-glucose-treated cells and an in vivo model study with type 1 diabetic mice were used to evaluate the unknown effect of CcpA-knockout strains on both the glucose and lipid metabolism phenotypes of the host. We found that the strains caused an abnormal metabolic phenotype in type 1 diabetic mice, particularly in reducing random and fasting blood glucose and increasing triglyceride and fatty acid contents in the serum. In a high-glucose environment, CcpA-knockout S. aureus may activate the hepatic STAT5/PDK4 pathway and affect pyruvate utilization. An abnormal metabolic phenotype was thus observed in diabetic mice. Our findings provide a better understanding of the molecular mechanism of glucose and lipid metabolism disorders in diabetic patients infected with S. aureus.
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Affiliation(s)
- Yilang Li
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou 511436, China;
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Jiaxuan Cai
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Yinan Liu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Conglin Li
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Xiaoqing Chen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Wing-Leung Wong
- The State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China;
| | - Wenyue Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People’s Hospital, Qingyuan 511518, China;
| | - Yuan Qin
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Guiping Zhang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Ning Hou
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, China; (J.C.); (Y.L.); (X.C.); (Y.Q.); (G.Z.)
| | - Wenchang Yuan
- Guangzhou Key Laboratory for Clinical Rapid Diagnosis and Early Warning of Infectious Diseases, KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou 511436, China;
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Zhou X, Luo J, Lin S, Wang Y, Yan Z, Ren Q, Liu X, Li X. Efficacy of Poria cocos and Alismatis rhizoma against diet-induced hyperlipidemia in rats based on transcriptome sequencing analysis. Sci Rep 2023; 13:17493. [PMID: 37840052 PMCID: PMC10577139 DOI: 10.1038/s41598-023-43954-6] [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: 10/10/2022] [Accepted: 09/30/2023] [Indexed: 10/17/2023] Open
Abstract
Hyperlipidemia, a common metabolic disease, is a risk factor for cardiovascular diseases, Poria cocos (PC) and Alismatis rhizoma (AR) serve as a potential treatment. A systematic approach based on transcriptome sequencing analysis and bioinformatics methods was developed to explore the synergistic effects of PC-AR and identify major compounds and potential targets. The phenotypic characteristics results indicated that the high dose (4.54 g/kg) of PC-AR reduced total cholesterol (TC), elevated high-density lipoprotein cholesterol (HDL-C) levels, and improved hepatocyte morphology, as assessed via hematoxylin and eosin (H&E) staining. Transcriptomic profiling processing results combined with GO enrichment analysis to identify the overlapping genes were associated with inflammatory responses. The cytokine-cytokine receptor interaction pathway was found as a potential key pathway using geneset enrichment analysis. Core enrichment targets were selected according to the PC-AR's fold change versus the model. Real-time quantitative PCR analysis validated that PC-AR significantly downregulated the expression of Cxcl10, Ccl2, Ccl4, Cd40 and Il-1β mRNA (P < 0.05). Molecular docking analysis revealed the significant compounds of PC-AR and the potential binding patterns of the critical compounds and targets. This study provides further evidence that the therapeutic effects of PC-AR on hyperlipidemia in rats through the regulation of inflammation-related targets.
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Affiliation(s)
- Xiaowen Zhou
- The Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Jingbiao Luo
- Laboratory of TCM Syndrome Essence and Objectification, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, No. 232, East Waihuan Road, Guangzhou Higher Education Mega Centre, Panyu District, Guangzhou City, 510006, China
| | - Shuxian Lin
- Laboratory of TCM Syndrome Essence and Objectification, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, No. 232, East Waihuan Road, Guangzhou Higher Education Mega Centre, Panyu District, Guangzhou City, 510006, China
| | - Yaxin Wang
- Laboratory of TCM Syndrome Essence and Objectification, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, No. 232, East Waihuan Road, Guangzhou Higher Education Mega Centre, Panyu District, Guangzhou City, 510006, China
| | - Zhenqian Yan
- Laboratory of TCM Syndrome Essence and Objectification, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, No. 232, East Waihuan Road, Guangzhou Higher Education Mega Centre, Panyu District, Guangzhou City, 510006, China
| | - Qi Ren
- Department of Rheumatology and Immunology, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | | | - Xiantao Li
- Laboratory of TCM Syndrome Essence and Objectification, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, No. 232, East Waihuan Road, Guangzhou Higher Education Mega Centre, Panyu District, Guangzhou City, 510006, China.
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Zhang J, Li J, Chen S, Wen K, Liu W. Quadruple Plasmon-Induced Transparency and Dynamic Tuning Based on Bilayer Graphene Terahertz Metamaterial. Nanomaterials (Basel) 2023; 13:2474. [PMID: 37686982 PMCID: PMC10490479 DOI: 10.3390/nano13172474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/26/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023]
Abstract
This study proposes a terahertz metamaterial structure composed of a silicon-graphene-silicon sandwich, aiming to achieve quadruple plasmon-induced transparency (PIT). This phenomenon arises from the interaction coupling of bright-dark modes within the structure. The results obtained from the coupled mode theory (CMT) calculations align with the simulations ones using the finite difference time domain (FDTD) method. Based on the electric field distributions at the resonant frequencies of the five bright modes, it is found that the energy localizations of the original five bright modes undergo diffusion and transfer under the influence of the dark mode. Additionally, the impact of the Fermi level of graphene on the transmission spectrum is discussed. The results reveal that the modulation depths (MDs) of 94.0%, 92.48%, 93.54%, 96.54%, 97.51%, 92.86%, 94.82%, and 88.20%, with corresponding insertion losses (ILs) of 0.52 dB, 0.98 dB, 1.37 dB, 0.70 dB, 0.43 dB, 0.63 dB, 0.16 dB, and 0.17 dB at the specific frequencies, are obtained, achieving multiple switching effects. This model holds significant potential for applications in versatile modulators and optical switches in the terahertz range.
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Affiliation(s)
- Jiayu Zhang
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; (J.Z.); (J.L.); (S.C.)
| | - Junyi Li
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; (J.Z.); (J.L.); (S.C.)
| | - Shuxian Chen
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; (J.Z.); (J.L.); (S.C.)
| | - Kunhua Wen
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou 510006, China; (J.Z.); (J.L.); (S.C.)
- Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China;
- Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenjie Liu
- Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China;
- Key Laboratory of Photonic Technology for Integrated Sensing and Communication, Ministry of Education of China, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
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12
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Han X, Sun J, Lv X, Tang X, Zheng Y, Ma J, Sun Y. A Recombinant Oncolytic Pseudorabies Virus Expressing Interleukin-18, Interferon-Gamma and PH20 Genes Promotes Systemic Antitumor Immunity. Microorganisms 2023; 11:1850. [PMID: 37513021 PMCID: PMC10385555 DOI: 10.3390/microorganisms11071850] [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: 06/13/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Pseudorabies virus (PRV) is considered to be a promising oncolytic virus that has potential as a cancer gene therapy drug. In this study, PRV-DCD-1-70 was used as a vector to carry exogenous genes IL-18, IFN-γ and PH20 to construct novel recombinant PRV, rPRV-PH20 and rPRV-IL-18-γ-PH20, and their tumorolytic effects were evaluated in vitro and in vivo. Our study showed that recombinant PRV lysed all four tumor cell lines, Pan02, EMT-6, CT26 and H446, and rPRV-IL-18-γ-PH20 showed the best tumor lysis effect. Further studies in mice bearing Pan02 tumors showed that recombinant PRV, especially rPRV-IL-18-γ-PH20, were able to inhibit tumor growth. Moreover, an immunohistochemical analysis indicated that the recombinant PRV effectively increased the infiltration of CD4+T and CD8+T cells and enhanced the anti-tumor immune response of the organism in vivo. Overall, PRV carrying PH20 and IL-18-γ exogenous genes demonstrated anti-tumor effects, providing a foundation for the further development and application of PRV as a novel tumor oncolytic virus vector.
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Affiliation(s)
- Xiaohui Han
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jingshuai Sun
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiaocheng Lv
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Xiaoyu Tang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yubin Zheng
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Jinyun Ma
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
| | - Yuan Sun
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, China
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Zhang W, Cai Z, Liang D, Han J, Wu P, Shan J, Meng G, Zeng H. Immune Cell-Related Genes in Juvenile Idiopathic Arthritis Identified Using Transcriptomic and Single-Cell Sequencing Data. Int J Mol Sci 2023; 24:10619. [PMID: 37445800 DOI: 10.3390/ijms241310619] [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: 05/15/2023] [Revised: 06/07/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023] Open
Abstract
Juvenile idiopathic arthritis (JIA) is the most common chronic rheumatic disease in children. The heterogeneity of the disease can be investigated via single-cell RNA sequencing (scRNA-seq) for its gap in the literature. Firstly, five types of immune cells (plasma cells, naive CD4 T cells, memory-activated CD4 T cells, eosinophils, and neutrophils) were significantly different between normal control (NC) and JIA samples. WGCNA was performed to identify genes that exhibited the highest correlation to differential immune cells. Then, 168 differentially expressed immune cell-related genes (DE-ICRGs) were identified by overlapping 13,706 genes identified by WGCNA and 286 differentially expressed genes (DEGs) between JIA and NC specimens. Next, four key genes, namely SOCS3, JUN, CLEC4C, and NFKBIA, were identified by a protein-protein interaction (PPI) network and three machine learning algorithms. The results of functional enrichment revealed that SOCS3, JUN, and NFKBIA were all associated with hallmark TNF-α signaling via NF-κB. In addition, cells in JIA samples were clustered into four groups (B cell, monocyte, NK cell, and T cell groups) by single-cell data analysis. CLEC4C and JUN exhibited the highest level of expression in B cells; NFKBIA and SOCS3 exhibited the highest level of expression in monocytes. Finally, real-time quantitative PCR (RT-qPCR) revealed that the expression of three key genes was consistent with that determined by differential analysis. Our study revealed four key genes with prognostic value for JIA. Our findings could have potential implications for JIA treatment and investigation.
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Affiliation(s)
- Wenbo Zhang
- The Joint Center for Infection and Immunity, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
- The Joint Center for Infection and Immunity, CAS Key Laboratory of Molecular Virology & Immunology, Chinese Academy of Sciences, Shanghai 200031, China
- The First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Zhe Cai
- Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Dandan Liang
- The First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Jiaochan Han
- Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Ping Wu
- Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jiayi Shan
- The First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Guangxun Meng
- The Joint Center for Infection and Immunity, CAS Key Laboratory of Molecular Virology & Immunology, Chinese Academy of Sciences, Shanghai 200031, China
- The Center for Microbes, Development and Health, CAS Key Laboratory of Molecular Virology & Immunology, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Huasong Zeng
- The Joint Center for Infection and Immunity, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
- Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
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Yi H, Yan G, He J, Zhuang J, Jin C, Zhang DY. Tantalum Nitride-Based Theranostic Agent for Photoacoustic Imaging-Guided Photothermal Therapy in the Second NIR Window. Nanomaterials (Basel) 2023; 13:nano13111708. [PMID: 37299611 DOI: 10.3390/nano13111708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/05/2023] [Accepted: 05/08/2023] [Indexed: 06/12/2023]
Abstract
Metal nitrides show excellent photothermal stability and conversion properties, which have the potential for photothermal therapy (PTT) for cancer. Photoacoustic imaging (PAI) is a new non-invasive and non-ionizing biomedical imaging method that can provide real-time guidance for precise cancer treatment. In this work, we develop polyvinylpyrrolidone-functionalized tantalum nitride nanoparticles (defined as TaN-PVP NPs) for PAI-guided PTT of cancer in the second near-infrared (NIR-II) window. The TaN-PVP NPs are obtained by ultrasonic crushing of massive tantalum nitride and further modification by PVP to obtain good dispersion in water. Due to their good absorbance in the NIR-II window, TaN-PVP NPs with good biocompatibility have obvious photothermal conversion performance, realizing efficient tumor elimination by PTT in the NIR-II window. Meanwhile, the excellent PAI and photothermal imaging (PTI) capabilities of TaN-PVP NPs are able to provide monitoring and guidance for the treatment process. These results indicate that TaN-PVP NPs are qualified for cancer photothermal theranostics.
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Affiliation(s)
- Huixi Yi
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Gaoyang Yan
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Jinzhen He
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Jiani Zhuang
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Chengzhi Jin
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
| | - Dong-Yang Zhang
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, National Medical Products Administration, State Key Laboratory of Respiratory Disease, The Fifth Affiliated Hospital, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, China
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15
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Zhang Y, Ge Q, Zeng Y. A 0.6 VIN 100 mV Dropout Capacitor-Less LDO with 220 nA IQ for Energy Harvesting System. Micromachines (Basel) 2023; 14:mi14050998. [PMID: 37241622 DOI: 10.3390/mi14050998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/28/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023]
Abstract
A fully integrated and high-efficiency low-dropout regulator (LDO) with 100 mV dropout voltage and nA-level quiescent current for energy harvesting has been proposed and simulated in the 180 nm CMOS process in this paper. A bulk modulation without an extra amplifier is proposed, which decreases the threshold voltage, lowering the dropout voltage and supply voltage to 100 mV and 0.6 V, respectively. To ensure stability and realize low current consumption, adaptive power transistors are proposed to enable system tropology to alter between 2-stage and 3-stage. In addition, an adaptive bias with bounds is utilized in an attempt to improve the transient response. Simulation results demonstrate that the quiescent current is as low as 220 nA and the current efficiency reaches 99.958% in the full load condition, load regulation is 0.0059 mV/mA, line regulation is 0.4879 mV/V, and the optimal PSR is -51 dB.
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Affiliation(s)
- Yuting Zhang
- School of Electronics and Communication Engineering, Guangzhou University, Guangzhou 510000, China
- Key Lab of Si-Based Information Materials & Devices and Integrated Circuits Design, Guangzhou University, Guangzhou 510000, China
| | - Qianhui Ge
- School of Electronics and Communication Engineering, Guangzhou University, Guangzhou 510000, China
- Key Lab of Si-Based Information Materials & Devices and Integrated Circuits Design, Guangzhou University, Guangzhou 510000, China
| | - Yanhan Zeng
- School of Electronics and Communication Engineering, Guangzhou University, Guangzhou 510000, China
- Key Lab of Si-Based Information Materials & Devices and Integrated Circuits Design, Guangzhou University, Guangzhou 510000, China
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16
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Wu S, He Y, Wei Y, Fan P, Ni W, Zhong D, Zhou G, Zheng X. Effects of Guangzhou seasonal climate change on the development of Aedes albopictus and its susceptibility to DENV-2. PLoS One 2022; 17:e0266128. [PMID: 35363810 PMCID: PMC8975156 DOI: 10.1371/journal.pone.0266128] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 03/15/2022] [Indexed: 12/21/2022] Open
Abstract
The susceptibility of Asian tiger mosquitoes to DENV-2 in different seasons was observed in simulated field environments as a reference to design dengue fever control strategies in Guangzhou. The life table experiments of mosquitoes in four seasons were carried out in the field. The susceptibility of Ae. albopictus to dengue virus was observed in both environments in Guangzhou in summer and winter. Ae. albopictus was infected with dengue virus by oral feeding. On day 7 and 14 after infection, the viral load in the head, ovary, and midgut of the mosquito was detected using real-time fluorescent quantitative PCR. Immune-associated gene expression in infected mosquitoes was performed using quantitative real-time reverse transcriptase PCR. The hatching rate and pupation rate of Ae. albopictus larvae in different seasons differed significantly. The winter hatching rate of larvae was lower than that in summer, and the incubation time was longer than in summer. In the winter field environment, Ae. albopictus still underwent basic growth and development processes. Mosquitoes in the simulated field environment were more susceptible to DENV-2 than those in the simulated laboratory environment. In the midgut, viral RNA levels on day 7 in summer were higher than those on day 7 in winter (F = 14.459, P = 0.01); ovarian viral RNA levels on day 7 in summer were higher than those on day 7 in winter (F = 8.656, P < 0.001), but there was no significant difference in the viral load at other time points (P > 0.05). Dicer-2 mRNA expression on day 7 in winter was 4.071 times than that on day 7 in summer: the viral load and Dicer-2 expression correlated moderately. Ae. albopictus could still develop and transmit dengue virus in winter in Guangzhou. Mosquitoes under simulated field conditions were more susceptible to DENV-2 than those under simulated laboratory conditions.
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Affiliation(s)
- Shanshan Wu
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yulan He
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yong Wei
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Peiyang Fan
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Weigui Ni
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Daibin Zhong
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, United States of America
| | - Guofa Zhou
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, United States of America
| | - Xueli Zheng
- Department of Pathogen Biology, School of Public Health, Southern Medical University, Guangzhou, China
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Kong W, Wu Q, Chen Y, Ren Y, Wang W, Zheng R, Deng H, Yuan T, Qiu H, Wang X, Luo X, Huang X, Yang Q, Zhang G, Zhang Y. Chinese Central Compartment Atopic Disease: The Clinical Characteristics and Cellular Endotypes Based on Whole-Slide Imaging. J Asthma Allergy 2022; 15:341-352. [PMID: 35320987 PMCID: PMC8934869 DOI: 10.2147/jaa.s350837] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 12/01/2021] [Accepted: 03/04/2022] [Indexed: 12/17/2022] Open
Abstract
Purpose Histopathologic characterizations of central compartment atopic disease (CCAD) by whole-slide imaging remains lacking. We aim to study clinical presentations and cellular endotyping diagnosis of Chinese CCAD using artificial intelligence (AI). Methods A total of 72 patients diagnosed with chronic rhinosinusitis with nasal polyps (CRSwNP) were enrolled. CCAD was defined by positive result of serology specific IgE, endoscopic and radiological findings. The aeroallergen sensitization status, endoscopic results, radiological findings, and symptoms were evaluated and compared between patients with CCAD (n=14), eosinophilic CRSwNP (ENP, n=32) and non-eosinophilic CRSwNP (NENP, n=26). The cellular endotypes including eosinophils, neutrophils, lymphocytes, and plasma cells were analyzed by the AI chronic rhinosinusitis evaluation platform 2.0. Results CCAD was most common in male (71.43%). The positive rate of aeroallergen in patients with CCAD is 100%, which is much higher than those in patients with ENP (40.63%) and NENP (23.08%). Allergic rhinitis incidence was found to be 57.14% in Chinese CCAD subjects, which is obviously higher when compared with those in patients with ENP (21.88%) or NENP (0.00%). The presence of asthma was not significantly different between groups. Chinese CCAD population demonstrated mild symptoms and lower endoscopic and radiological scores than those in patients with ENP and NENP. For cellular endotypes in CCAD subjects, the median of eosinophils, neutrophils, lymphocytes, and plasma cells was 26.55%, 0.49%, 60.85%, and 7.33%, respectively. The proportion of eosinophils in nasal tissue and peripheral blood mononuclear cells from the CCAD group is between the proportions in those patients with ENP and NENP. Conclusion Chinese CCAD was associated with aeroallergen sensitivity, and displayed an eosinophil-dominant inflammatory pattern. Thus, proper management with allergy control and topical steroids could be recommended for CCAD treatment.
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Affiliation(s)
- Weifeng Kong
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Qingwu Wu
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Yubin Chen
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Yong Ren
- Guangdong Provincial Key Laboratory of Digestive Cancer Research, the Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, People’s Republic of China
| | - Weihao Wang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Rui Zheng
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Huiyi Deng
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Tian Yuan
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Huijun Qiu
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Xinyue Wang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Xin Luo
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Xuekun Huang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Qintai Yang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Gehua Zhang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
| | - Yana Zhang
- Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, People’s Republic of China
- Correspondence: Yana Zhang; Gehua Zhang, Department of Otolaryngology-Head and Neck Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, No. 600 Tianhe Road, Guangzhou, 510630, People’s Republic of China, Tel +86-20-85252310, Email ;
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Wang Y, Xie X, Zhang C, Su M, Gao S, Wang J, Lu C, Lin Q, Lin J, Matucci-Cerinic M, Furst DE, Zhang G. Rheumatoid arthritis, systemic lupus erythematosus and primary Sjögren's syndrome shared megakaryocyte expansion in peripheral blood. Ann Rheum Dis 2022; 81:379-385. [PMID: 34462261 PMCID: PMC8862024 DOI: 10.1136/annrheumdis-2021-220066] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 08/15/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVES Rheumatoid arthritis (RA), systemic lupus erythematosus (SLE) and primary Sjögren's syndrome (pSS) share many clinical manifestations and serological features. The aim of this study was to identify the common transcriptional profiling and composition of immune cells in peripheral blood in these autoimmune diseases (ADs). METHODS We analysed bulk RNA-seq data for enrichment of biological processes, transcription factors (TFs) and deconvolution-based immune cell types from peripheral blood mononuclear cells (PBMCs) in 119 treatment-naive patients (41 RA, 38 pSS, 28 SLE and 12 polyautoimmunity) and 20 healthy controls. The single-cell RNA-seq (scRNA-seq) and flow cytometry had been performed to further define the immune cell subsets on PBMCs. RESULTS Similar transcriptional profiles and common gene expression signatures associated with nucleosome assembly and haemostasis were identified across RA, SLE, pSS and polyautoimmunity. Distinct TF ensembles and gene regulatory network were mainly enriched in haematopoiesis. The upregulated cell-lineage-specific TFs PBX1, GATA1, TAL1 and GFI1B demonstrated a strong gene expression signature of megakaryocyte (MK) expansion. Gene expression-based cell type enrichment revealed elevated MK composition, specifically, CD41b+CD42b+ and CD41b+CD61+ MKs were expanded, further confirmed by flow cytometry in these ADs. In scRNA-seq data, MKs were defined by TFs PBX1/GATA1/TAL1 and pre-T-cell antigen receptor gene, PTCRA. Cellular heterogeneity and a distinct immune subpopulation with functional enrichment of antigen presentation were observed in MKs. CONCLUSIONS The identification of MK expansion provided new insights into the peripheral immune cell atlas across RA, SLE, pSS and polyautoimmunity. Aberrant regulation of the MK expansion might contribute to the pathogenesis of these ADs.
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Affiliation(s)
- Yukai Wang
- Department of Rheumatology and Immunology, Shantou Central Hospital, Shantou, China
| | - Xuezhen Xie
- Department of Rheumatology and Immunology, Shantou Central Hospital, Shantou, China
| | - Chengpeng Zhang
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
| | - Miaotong Su
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
| | - Sini Gao
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
| | - Jing Wang
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
| | - Changhao Lu
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
| | - Qisheng Lin
- Department of Rheumatology and Immunology, Shantou Central Hospital, Shantou, China
| | - Jianqun Lin
- Department of Rheumatology and Immunology, Shantou Central Hospital, Shantou, China
| | | | - Daniel E Furst
- Rheumatology, University of California Los Angeles, Los Angeles, California, USA
| | - Guohong Zhang
- Department of Pathology, Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, China
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Wu YH, Zhang LM, Wang YZ, Chen JW, Zhang B, Tang JB, Cheng B. Efficacy of autologous platelet-rich plasma in treating patients with burn wounds: A protocol for systematic review and meta-analysis. Medicine (Baltimore) 2021; 100:e25650. [PMID: 33907125 PMCID: PMC8084026 DOI: 10.1097/md.0000000000025650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 04/05/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Burns are still regarded among severe health problems related to high morbidity and mortality rates globally. In essence, health problems associated with burns can cause significant economic burden to society. Regardless of treatment available options, no best treatment was considered adequate for treating severe burns. In particular, only a few studies have focused on the effect of autologous platelet-rich plasma to treat burn wounds. The present study aim to systematically review existing literature to examine the effectiveness and safety of autologous platelet-rich plasma (PRP) to treat burn wounds. METHODS For this study, we will conduct a systematic search using MEDLINE, EMBASE, the Cochrane Library, Web of Science, CINAHL, as well as Scopus to discover randomised controlled trials (RCTs) for the examination of effectiveness and safety of autologous PRP to treat burn wounds from their inception to March 2021 with no language restrictions. Additionally, we will search Google Scholar, ClinicalTrials.gov, as well as the reference lists of studies considered in the research to ascertain possibly eligible studies. We used two independent authors to evaluate studies for inclusion and conduct data extraction. We intend to assess study bias and quality utilizing the Cochrane Collaboration's Risk of Bias Tool 2.0. Also, we will pool study results using the fixed-effects model or random-effects model. Finally, any disagreements emanating from the process will be addressed through discussion or using a third author to mediate situations leading to disagreement. RESULTS The study aims at assessing the effectiveness and safety of autologous PRP for treating burn wounds. CONCLUSION The study will provide specific substantiation to assess autologous PRP's effectiveness and safety in treating patients with burn wounds. ETHICS AND DISSEMINATION The study does not require ethical approval since no published studies are used in it. OSF REGISTRATION NUMBER March 29, 2021.osf.io/74z5u. (https://osf.io/74z5u/).
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Wang Y, Chen C, Liang J, Fan L, Liu D, Zhang X, Liu F. A comparison of the clinical effects of thinning and drilling on laser-assisted hatching. Lasers Med Sci 2021; 37:1-9. [PMID: 33442852 PMCID: PMC8803699 DOI: 10.1007/s10103-020-03230-9] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 12/22/2020] [Indexed: 01/08/2023]
Abstract
To systematically investigate the effects of two methods used for laser-assisted hatching (LAH) on clinical outcomes after day 4 (D4) on frozen-embryo-transfer (FET) cycles. Data from 11471 infertile patients who underwent FET cycles between January 2014 and October 2018 was retrospectively analyzed. The 1410 patients who met the inclusion criteria were further categorized into two groups based on the hatching procedure used: the thinning laser-assisted hatching group (T-LAH, 716 patients), and the drilling laser-assisted hatching group (D-LAH, 694 patients). The baseline characteristics of the patients were consistent between the two groups. However, the rates of implantation and clinical pregnancy were significantly higher in the T-LAH group compared to the D-LAH group (32.73% vs. 29.09%, P < 0.01, and 50.98% vs. 43.95%, P < 0.01). The proportion of live birth was also higher in the T-LAH group, but the difference was insignificant (39.11% vs. 36.89%, P > 0.05). Moreover, there were no significant differences in rates of miscarriages, multiple pregnancies, ectopic pregnancies, preterm births, and congenital disabilities between the two groups. Nonetheless, significantly higher rates of implantation and pregnancy were reported in the T-LAH group compared to the D-LAH group among patients aged <35 years, patients with at least one previously failed cycle, and patients with an endometrial thickness of 8-10 mm. T-LAH is superior to D-LAH in improving clinical implantation and pregnancy outcomes in D4 FET, particularly in patients aged <35 years with at least one previously failed cycle or an endometrial thickness of 8-10 mm. The findings of this study provide theoretical support for clinical individualized diagnosis and treatment of patients with infertility.
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Affiliation(s)
- Yujiang Wang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Chuangqi Chen
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Jiaying Liang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Lin Fan
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Dun Liu
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Xiqian Zhang
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China
| | - Fenghua Liu
- Department of Reproductive Medical Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511442, Guangdong Province, China.
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Xiao Z, Su Z, Han S, Huang J, Lin L, Shuai X. Dual pH-sensitive nanodrug blocks PD-1 immune checkpoint and uses T cells to deliver NF-κB inhibitor for antitumor immunotherapy. Sci Adv 2020; 6:eaay7785. [PMID: 32076650 PMCID: PMC7002126 DOI: 10.1126/sciadv.aay7785] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 11/22/2019] [Indexed: 05/03/2023]
Abstract
The response to programmed cell death protein-1 (PD-1)/programmed death ligand-1 (PD-L1) blockade in cancer immunotherapy is limited because of multiple immune evasion mechanisms. Here, a previously unknown strategy is proposed to synergize the nuclear factor κB (NF-κB) inhibition and PD-1 blockade for antitumor immunotherapy. A dual pH-sensitive nanocarrier loading curcumin (CUR) and anti-PD-1 monoclonal antibody (aPD-1) may bind to circulating PD-1+ T cells and then follow their infiltration into the tumor. Furthermore, the nanodrug bound to PD-1+ T cells may be released in the tumor microenvironment, leaving aPD-1 to block PD-1 on T cells and generating a CUR-encapsulated cationic nanodrug that can be easily taken up by tumor cells/tumor associated macrophages (TAMs). Thus, not only the antitumor T cells mediate efficient CUR delivery to tumor but also the efficient CUR delivery promotes the tumor infiltration of antitumor T cells, thereby resulting in effective activation of antitumor immunity.
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Affiliation(s)
- Zecong Xiao
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhenwei Su
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Shisong Han
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Jinsheng Huang
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Liteng Lin
- Department of Minimally Invasive Interventional Radiology, and Laboratory of Interventional Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510275, China
| | - Xintao Shuai
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Corresponding author.
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Zhang B, Zhang H, Qin G, Liu Y, Han X, Yin J, Lin Q. TLR2 gene in seahorse brood pouch plays key functional roles in LPS-induced antibacterial responses. J Fish Dis 2019; 42:1085-1089. [PMID: 31037728 DOI: 10.1111/jfd.13006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Affiliation(s)
- Bo Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Huixian Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Geng Qin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Yuhong Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Xue Han
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianping Yin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Qiang Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
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Xu L, Wu J, Li Q, Wei Y, Tan Z, Cai J, Guo H, Yang L, Huang X, Chen J, Zhang F, He B, Tu C. Seroprevalence, cross antigenicity and circulation sphere of bat-borne hantaviruses revealed by serological and antigenic analyses. PLoS Pathog 2019; 15:e1007545. [PMID: 30668611 PMCID: PMC6358112 DOI: 10.1371/journal.ppat.1007545] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 02/01/2019] [Accepted: 12/24/2018] [Indexed: 01/06/2023] Open
Abstract
Bats are newly identified reservoirs of hantaviruses (HVs) among which very divergent HVs have been discovered in recent years. However, their significance for public health remains unclear since their seroprevalence as well as antigenic relationship with human-infecting HVs have not been investigated. In the present study archived tissues of 1,419 bats of 22 species from 6 families collected in 5 south and southwest provinces in China were screened by pan-HV RT-PCR following viral metagenomic analysis. As a result nine HVs have been identified in two bat species in two provinces and phylogenetically classified into two species, Laibin virus (LAIV, ICTV approved species, 1 strain) and Xuan son virus (XSV, proposed species, 8 strains). Additionally, 709 serum samples of these bats were also analyzed by ELISA to investigate the seroprevalence and cross-reactivity between different HVs using expressed recombinant nucleocapsid proteins (rNPs) of LAIV, XSV and Seoul virus (SEOV). The cross-reactivity of some bat sera were further confirmed by western blot (WB) using three rNPs followed by fluorescent antibody virus neutralization test (FAVNT) against live SEOV. Results showed that the total HV seropositive rate of bat sera was 18.5% (131/709) with many cross reacting with two or all three rNPs and several able to neutralize SEOV. WB analysis using the three rNPs and their specific hyperimmune sera demonstrated cross-reactivity between XSV/SEOV and LAIV/XSV, but not LAIV/SEOV, indicating that XSV is antigenically closer to human-infecting HVs. In addition a study of the distribution of the viruses identified an area covering the region between Chinese Guangxi and North Vietnam, in which XSV and LAIV circulate within different bat colonies with a high seroprevalence. A circulation sphere of bat-borne HVs has therefore been proposed. Some HVs are life-threatening pathogens predominantly carried and transmitted by rodents. In recent years bat-borne HVs have been identified in a broad range of bat species. To understand their significance to public health the present study conducted extensive investigations on genetic diversity, seroprevalence, distribution and cross antigenicity of bat-borne HVs in south and southwest China. The results provide the first profiling of cross-reactivity between bat-borne and human-infecting HVs, demonstrating that some bat sera can neutralize SEOV in cell culture. They also revealed that divergent bat-borne HVs co-exist and are widely distributed in Chinese Guangxi/Yunnan as well as in north Vietnam, resulting in identification of an area between China and Vietnam in which natural circulation of bat-borne HVs is maintained. Given the existence of bat-borne HVs genetically and antigenically close to human-infecting HVs, the need for extensive future studies is emphasized in order to assess the potential risk of these viruses to public health.
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Affiliation(s)
- Lin Xu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
| | - Jianmin Wu
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, Guangxi, China
| | - Qi Li
- Institute for Viral Disease Prevention and Control, Hebei Province Center for Disease Prevention and Control, Shijiazhuang, Hebei, China
| | - Yamei Wei
- Institute for Viral Disease Prevention and Control, Hebei Province Center for Disease Prevention and Control, Shijiazhuang, Hebei, China
| | - Zhizhou Tan
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
| | - Jianqiu Cai
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
| | - Huancheng Guo
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
| | - Ling’en Yang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
| | - Xiaohong Huang
- College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Jing Chen
- Institute of Animal Health, Guangdong Academy of Agricultural Science, Guangzhou, Guangdong, China
| | - Fuqiang Zhang
- Center for Disease Control and Prevention of Southern Theater Command, Kunming, Yunnan, China
- * E-mail: (FZ); (BH); (CT)
| | - Biao He
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- * E-mail: (FZ); (BH); (CT)
| | - Changchun Tu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China
- * E-mail: (FZ); (BH); (CT)
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Cheng W, Pan J, Yang J, Zheng Z, Lu F, Chen Y, Gao W. A photoelectrochemical aptasensor for thrombin based on the use of carbon quantum dot-sensitized TiO 2 and visible-light photoelectrochemical activity. Mikrochim Acta 2018; 185:263. [PMID: 29687401 DOI: 10.1007/s00604-018-2800-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 02/01/2018] [Accepted: 04/12/2018] [Indexed: 11/26/2022]
Abstract
A photoelectrochemical (PEC) aptasensor for the highly sensitive and specific detection of thrombin is described. This aptasensor is based on an indium tin oxide (ITO) support that is covered with carbon quantum dot (CQD)-sensitized TiO2 and acts as a photoactive matrix. The ITO/TiO2/CQD electrode was prepared by impregnation assembly. It displays an enhanced and steady photocurrent response under irradiation by visible light. A carboxyl-functionalized thrombin-binding aptamer was covalently immobilized on the modified ITO to obtain a PEC aptasensor whose photocurrent decreases with increasing concentration of thrombin. Under 420 nm irradiation at a bias voltage of 0 V, the aptasensor has a linear response in the 1.0 to 250 pM thrombin concentration range, with a 0.83 pM detection limit. Conceivably, this approach can be extended to numerous other PEC aptasensors for the detection of targets for which appropriate aptamers are available. Graphical abstract Schematic of a PEC aptasensor for thrombin. It is based on the use of CQD as the sensitizer, TiO2/CQDs as the photoactive matrix, and the thrombin aptamer as the recognition element.
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Affiliation(s)
- Wenjie Cheng
- Department of Chemistry and Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong, 515063, People's Republic of China
| | - Jiahong Pan
- Department of Chemistry and Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong, 515063, People's Republic of China
| | - Jianying Yang
- National Detergents and Cosmetics Products Quality Supervision and Inspection Center (Guangdong), Shantou, Guangdong, 515041, People's Republic of China
| | - Zengyao Zheng
- National Detergents and Cosmetics Products Quality Supervision and Inspection Center (Guangdong), Shantou, Guangdong, 515041, People's Republic of China
| | - Fushen Lu
- Analysis & Testing Center, Shantou University, Shantou, Guangdong, 515063, People's Republic of China
| | - Yaowen Chen
- Analysis & Testing Center, Shantou University, Shantou, Guangdong, 515063, People's Republic of China
| | - Wenhua Gao
- Department of Chemistry and Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, Guangdong, 515063, People's Republic of China.
- Analysis & Testing Center, Shantou University, Shantou, Guangdong, 515063, People's Republic of China.
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Zhang M, Wu Q, Chen Y, Duan M, Tian G, Deng X, Sun Y, Zhou T, Zhang G, Chen W, Chen J. Inhibition of proanthocyanidin A2 on porcine reproductive and respiratory syndrome virus replication in vitro. PLoS One 2018; 13:e0193309. [PMID: 29489892 PMCID: PMC5831109 DOI: 10.1371/journal.pone.0193309] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 02/08/2018] [Indexed: 12/11/2022] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is a widely prevalent and endemic swine pathogen that causes significant economic losses for the global pig industry annually. Currently, the most prevalent strategy for PRRSV control remains the prevention of virus transmission, with highly effective therapeutic agents and vaccines still lacking. Proanthocyanidin A2 (PA2) belongs to the family of tea polyphenols, which have been reported to exhibit a range of biological activities including anti-oxidative, cardio-protective, anti-tumoural, anti-bacterial, anti-viral, and anti-inflammatory effects in vitro as well as in vivo. Here, we demonstrate that PA2 exhibits potent anti-viral activity against PRRSV infection in Marc-145 cells. Similar inhibitory effects were also found in porcine alveolar macrophages, the primary target cell type of PRRSV infection in pigs in vivo. For traditional type II PRRSV CH-1a strain and high pathogenic GD-XH strain and GD-HD strain, PA2 exhibited broad-spectrum and comparable inhibitory activities in vitro with EC50 ranging from 2.2 to 3.2 μg/ml. Treatment of PRRSV-infected Marc-145 cells with PA2 significantly inhibited viral RNA synthesis, viral protein expression and progeny virus production in a dose-dependent manner. In addition, PA2 treatment reduced gene expressions of cytokines (TNF-α, IFN-α, IL-1β and IL-6) induced by PRRSV infection in PAMs. Mechanistically, PA2 inhibited PRRSV replication by targeting multiple pathways including blockade of viral entry and progeny virus release. Altogether, our findings suggest that PA2 has the potential to serve as a novel prophylactic and therapeutic strategies against PRRSV infection.
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Affiliation(s)
- Mingxin Zhang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Qianqian Wu
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yao Chen
- Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Mubing Duan
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Ge Tian
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xianbo Deng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yankuo Sun
- Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Tong Zhou
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Guihong Zhang
- Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Weisan Chen
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Jianxin Chen
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Wang X, Chen C, Liu P, Li W, Wang L, Liu Y. The morbidity of sexual dysfunction of 125 Chinese women following different types of radical hysterectomy for gynaecological malignancies. Arch Gynecol Obstet 2017; 297:459-466. [PMID: 29282516 DOI: 10.1007/s00404-017-4625-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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: 08/27/2017] [Accepted: 12/11/2017] [Indexed: 01/23/2023]
Abstract
PURPOSE Due to early detection and effective treatment, quality of sexual life of patients with gynaecological malignancies has become an important issue. However, the morbidity of sexual dysfunction and the proportion of different kinds of sexual dysfunction after radical hysterectomy are unclear. The aim of the current study was to assess the morbidity of sexual dysfunction and to conduct multivariate logistic regression analysis of patients' sexual dysfunction. METHODS Between July 2007 and December 2012, 125 women underwent radical hysterectomy, modified radical hysterectomy, and nerve-sparing radical hysterectomy were administered a self-reported sexual function questionnaire. RESULTS The preoperative, and 1- and 2-year postoperative sexual dysfunction rates were 50.5% (50/99), 86.9% (93/107), and 92.3% (72/78), respectively. The incidence rates of sexual desire disorders before operation, at postoperative year 1, and at postoperative year 2 were 14.7% (14/95), 42.1% (45/107), and 51.9% (40/77), respectively. The preoperative incidence rates of sexual arousal disorders, orgasmic disorders, and sexual pain disorders were 18.4% (18/98), 51.1% (48/94), and 10.9% (11/101), respectively. At postoperative years 1 and 2, these were 38.8% (31/80), 81.0% (64/79), and 24.4% (20/82), and 49.1% (26/53), 84.6% (44/52), and 30.2% (16/53), respectively. Multivariable regression analysis revealed that age, preserved ovary, preserved posterior vaginal wall length, preoperative stage, radiotherapy, and education background were risk factors associated with sexual dysfunction. CONCLUSION The patients following radical hysterectomy had a high incidence of sexual dysfunction, which plateaued in postoperative years 1 and 2.
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Affiliation(s)
- Xueqin Wang
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China
- Department of Obstetrics and Gynecology, The Fifth Affiliated Hospital of Southern Medical University, No. 566, CongCheng Road, Conghua District, Guangzhou, 510900, People's Republic of China
| | - Chunlin Chen
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China.
| | - Ping Liu
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China
| | - Weili Li
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China
| | - Liling Wang
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China
| | - Yunlu Liu
- Department of Obstetrics and Gynecology, Nanfang Hospital of Southern Medical University, No. 1838, Guangzhou Avenue, Guangzhou, 510515, People's Republic of China
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Li Z, Wang Y, Tian G, Li P, Zhao L, Zhang F, Yao J, Fan H, Song X, Chen D, Fan Z, Qin M, Zeng M, Zhang Z, Lu X, Hu S, Lei C, Zhu Q, Li J, Gao X, Liu JM. High-density array of ferroelectric nanodots with robust and reversibly switchable topological domain states. Sci Adv 2017; 3:e1700919. [PMID: 28835925 PMCID: PMC5562417 DOI: 10.1126/sciadv.1700919] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 07/16/2017] [Indexed: 05/04/2023]
Abstract
The exotic topological domains in ferroelectrics and multiferroics have attracted extensive interest in recent years due to their novel functionalities and potential applications in nanoelectronic devices. One of the key challenges for these applications is a realization of robust yet reversibly switchable nanoscale topological domain states with high density, wherein spontaneous topological structures can be individually addressed and controlled. This has been accomplished in our work using high-density arrays of epitaxial BiFeO3 (BFO) ferroelectric nanodots with a lateral size as small as ~60 nm. We demonstrate various types of spontaneous topological domain structures, including center-convergent domains, center-divergent domains, and double-center domains, which are stable over sufficiently long time but can be manipulated and reversibly switched by electric field. The formation mechanisms of these topological domain states, assisted by the accumulation of compensating charges on the surface, have also been revealed. These results demonstrated that these reversibly switchable topological domain arrays are promising for applications in high-density nanoferroelectric devices such as nonvolatile memories.
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Affiliation(s)
- Zhongwen Li
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Yujia Wang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Guo Tian
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Peilian Li
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Lina Zhao
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Fengyuan Zhang
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Junxiang Yao
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Hua Fan
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Xiao Song
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Deyang Chen
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Zhen Fan
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Minghui Qin
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Min Zeng
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Zhang Zhang
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Xubing Lu
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Shejun Hu
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
| | - Chihou Lei
- Department of Aerospace and Mechanical Engineering, Saint Louis University, St. Louis, MO 63103–1110, USA
| | - Qingfeng Zhu
- Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Jiangyu Li
- Shenzhen Key Laboratory of Nanobiomechanics, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195–2600, USA
| | - Xingsen Gao
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
- Corresponding author. (X.G.); (J.-M.L.)
| | - Jun-Ming Liu
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China
- National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 21009, China
- Corresponding author. (X.G.); (J.-M.L.)
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Yao N, Li YJ, Lei YH, Hu N, Chen WM, Yao Z, Yu M, Liu JS, Ye WC, Zhang DM. A piperazidine derivative of 23-hydroxy betulinic acid induces a mitochondria-derived ROS burst to trigger apoptotic cell death in hepatocellular carcinoma cells. J Exp Clin Cancer Res 2016; 35:192. [PMID: 27931237 PMCID: PMC5146873 DOI: 10.1186/s13046-016-0457-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/10/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Elevated production of reactive oxygen species (ROS) and an altered redox state have frequently been observed in hepatocellular carcinoma (HCC); therefore, selective killing of HCC cells by chemotherapeutic agents that stimulate ROS generation or impair antioxidant systems may be a feasible approach in HCC chemotherapy. Recently, betulinic acid and its derivatives have attracted attention because they showed anti-cancer effects via a ROS- and mitochondria-related mechanism. However, the source of ROS overproduction and the role of mitochondria were poorly identified, and the weak in vivo antitumour activity of these compounds limits their development as drugs. METHODS Cytotoxicity was detected using MTT assays. In vivo anti-HCC effects were assessed using nude mice bearing HepG2 tumour xenografts. Cell cycle analysis, apoptosis rate and mitochondrial membrane potential were measured by flow cytometry. ROS production was detected using a microplate reader or a fluorescence microscope. Changes in gene and protein levels were measured by RT-PCR and western blotting, respectively. Other assays were performed using related detection kits. RESULTS B5G9, a piperazidine derivative of 23-hydroxy betulinic acid (23-HBA), showed excellent in vivo anti-HCC effects, with a tumour growth inhibitory rate of greater than 80%, and no significant side effects. B5G9 stimulated the production of ROS, which were derived from the mitochondria, but it had no effect on various other antioxidant systems. Moreover, B5G9 induced mitochondrial dysfunction, which was characterized by morphological changes, membrane potential collapse, membrane permeabilization, and decreases in the O2 consumption rate and ATP production. Furthermore, mtDNA-depleted ρ0 HepG2 cells were less sensitive to B5G9 treatment than wt HepG2 cells, indicating the importance of mitochondria in B5G9-induced cell death. CONCLUSION We discovered a piperazidine derivative of 23-HBA, B5G9, with excellent anti-HCC effects both in vivo and in vitro and no obvious toxic effects. The underlying mechanism was associated with mitochondria-derived ROS overproduction, and mitochondria played essential roles in B5G9-induced cell death. This study identified a potential agent for anti-HCC therapy and elucidated the mitochondria-related mechanism of BA and its derivatives.
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Affiliation(s)
- Nan Yao
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Ying-jie Li
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Yu-he Lei
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Nan Hu
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Wei-Min Chen
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Zhe Yao
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Miao Yu
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Jun-shan Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515 China
| | - Wen-cai Ye
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
| | - Dong-mei Zhang
- College of Pharmacy, Jinan University, No.601 West Huangpu Avenue, Guangzhou, 510632 China
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29
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Zhang Y, Yang H, Long Y, Ma Q, Chen R. Plasma Level of Placenta-Derived Macrophage-Stimulating Protein -Chain in Preeclampsia before 20 Weeks of Pregnancy. PLoS One 2016; 11:e0161626. [PMID: 27559727 PMCID: PMC4999075 DOI: 10.1371/journal.pone.0161626] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 08/09/2016] [Indexed: 12/14/2022] Open
Abstract
Object This study aimed to investigate the diagnostic value of placenta-derived macrophage-stimulating protein α-chain (MSP-α) before the 20th week of gestation for the early diagnosis of preeclampsia (PE). Methods and Materials Two parts of this nested case-control study were simultaneously executed, and 1500 pregnant women were recruited. A total of 124 pregnant women were included in the plasma analysis part of this study. The MSP-α plasma level was measured before the 20th week of gestation, and the participants were followed until delivery. A case group of 62 women with PE and a control group of 62 women matched by gestational age, maternal age, and pre-pregnancy BMI (with normotensive pregnancies) were evaluated. In the placenta analysis part of this nested case-control study, the placentas of 34 pregnant women were randomly obtained. The placental levels of MSP were measured in 17 individuals with PE (case group) and in 17 women with a normotensive pregnancy matched by gestational age and maternal age (control group). Results The plasma level of MSP-α was higher in the PE group than in the control group before the 20th week of gestation (p < 0.001). In addition, compared to the women with severe features in the PE group, those without severe features had a significantly higher plasma MSP-α level before the 20th week of gestation (p < 0.001). The area under the receiver operating characteristic curve (AUC) of MSP-α before the 20th week of gestation was 0.905 (95% CI, 0.811–0.962) for the women with early-onset PE without severe features. With regard to the placenta, the PE group (accumulated optical density, IOD [SUM] = 8862.37 ± 2064.42) exhibited increased MSP staining (more intense MSP staining or more extensive staining) compared with the control group (normal pregnancies (IOD [SUM] = 447.92 ± 114.72, P < 0.001). Furthermore, increased MSP staining was detected among the women without severe features compared with those with severe features in the PE group (IOD [SUM]: 12192.65 ± 5325.56 vs. 4104.83 ± 2383.06, P = 0.021). Conclusion According to the findings of this study, the plasma level of MSP-α may be associated with PE, and MSP-α may be considered a candidate protein for further analysis in studies of PE. Multicenter studies with larger sample sizes must be performed in the future to obtain accurate results regarding the predictive value of MSP-α in combination with other protein factors for the early diagnosis of PE.
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Affiliation(s)
- Yonggang Zhang
- Department of Clinical Laboratory, Central Hospital of Longhua New District, Shenzhen, 518110, China
| | - Hongling Yang
- Department of Clinical Laboratory, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, 510623, China
- * E-mail:
| | - Yan Long
- Department of Clinical Laboratory, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, 510623, China
| | - Qingling Ma
- Department of Clinical Laboratory, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, 510623, China
| | - Ruihua Chen
- Department of Preventive Medicine, School of Public Health, Guangzhou Medical University, Guangzhou, 511436, China
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