1
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Li B, Wang W, Zhao L, Li M, Yan D, Li X, Zhang J, Gao Q, Feng Y, Zheng J, Shu B, Yan Y, Wang J, Wang H, He L, Wu Y, Zhou S, Qin X, Chen W, Qiu K, Shen C, Wang D, Tang BZ, Liao Y. Aggregation-Induced Emission-Based Macrophage-Like Nanoparticles for Targeted Photothermal Therapy and Virus Transmission Blockage in Monkeypox. Adv Mater 2024; 36:e2305378. [PMID: 37931029 DOI: 10.1002/adma.202305378] [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] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 10/02/2023] [Indexed: 11/08/2023]
Abstract
The recent prevalence of monkeypox has led to the declaration of a Public Health Emergency of International Concern. Monkeypox lesions are typically ulcers or pustules (containing high titers of replication-competent virus) in the skin and mucous membranes, which allow monkeypox virus to transmit predominantly through intimate contact. Currently, effective clinical treatments for monkeypox are lacking, and strategies for blocking virus transmission are fraught with drawbacks. Herein, this work constructs a biomimetic nanotemplate (termed TBD@M NPs) with macrophage membranes as the coat and polymeric nanoparticles loading a versatile aggregation-induced emission featured photothermal molecule TPE-BT-DPTQ as the core. In a surrogate mouse model of monkeypox (vaccinia-virus-infected tail scarification model), intravenously injected TBD@M NPs show precise tracking and near-infrared region II fluorescence imaging of the lesions. Upon 808 nm laser irradiation, the virus is eliminated by the photothermal effect and the infected wound heals rapidly. More importantly, the inoculation of treated lesion tissue suspensions does not trigger tail infection or inflammatory activation in healthy mice, indicating successful blockage of virus transmission. This study demonstrates for the first time monkeypox theranostics using nanomedicine, and may bring a new insight into the development of a viable strategy for monkeypox management in clinical trials.
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Affiliation(s)
- Bin Li
- Department of Burn Surgery, Department of Clinical Laboratory, Institute of Translational Medicine, The First People's Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Wei Wang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Lu Zhao
- Department of Burn Surgery, Department of Clinical Laboratory, Institute of Translational Medicine, The First People's Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Mengjun Li
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Dingyuan Yan
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Xiaoxue Li
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Jie Zhang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Qiuxia Gao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Yi Feng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Judun Zheng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Bowen Shu
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Yan Yan
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Jiamei Wang
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Huanhuan Wang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Lingjie He
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
| | - Yunxia Wu
- Department of Burn Surgery, Department of Clinical Laboratory, Institute of Translational Medicine, The First People's Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Sitong Zhou
- Department of Burn Surgery, Department of Clinical Laboratory, Institute of Translational Medicine, The First People's Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Xinchi Qin
- Department of Burn Surgery, Department of Clinical Laboratory, Institute of Translational Medicine, The First People's Hospital of Foshan, Foshan, Guangdong, 528000, China
| | - Wentao Chen
- The First Clinical Medical College, Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Kaizhen Qiu
- The First Clinical Medical College, Guangdong Medical University, Zhanjiang, Guangdong, 524000, China
| | - Chenguang Shen
- BSL-3 Laboratory (Guangdong), Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, 510515, China
| | - Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China
| | - Ben Zhong Tang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, China
| | - Yuhui Liao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, 510091, China
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2
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Li B, Wang W, Zhao L, Wu Y, Li X, Yan D, Gao Q, Yan Y, Zhang J, Feng Y, Zheng J, Shu B, Wang J, Wang H, He L, Zhang Y, Pan M, Wang D, Tang BZ, Liao Y. Photothermal therapy of tuberculosis using targeting pre-activated macrophage membrane-coated nanoparticles. Nat Nanotechnol 2024:10.1038/s41565-024-01618-0. [PMID: 38383890 DOI: 10.1038/s41565-024-01618-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 01/22/2024] [Indexed: 02/23/2024]
Abstract
Conventional antibiotics used for treating tuberculosis (TB) suffer from drug resistance and multiple complications. Here we propose a lesion-pathogen dual-targeting strategy for the management of TB by coating Mycobacterium-stimulated macrophage membranes onto polymeric cores encapsulated with an aggregation-induced emission photothermal agent that is excitable with a 1,064 nm laser. The coated nanoparticles carry specific receptors for Mycobacterium tuberculosis, which enables them to target tuberculous granulomas and internal M. tuberculosis simultaneously. In a mouse model of TB, intravenously injected nanoparticles image individual granulomas in situ in the lungs via signal emission in the near-infrared region IIb, with an imaging resolution much higher than that of clinical computed tomography. With 1,064 nm laser irradiation from outside the thoracic cavity, the photothermal effect generated by these nanoparticles eradicates the targeted M. tuberculosis and alleviates pathological damage and excessive inflammation in the lungs, resulting in a better therapeutic efficacy compared with a combination of first-line antibiotics. This precise photothermal modality that uses dual-targeted imaging in the near-infrared region IIb demonstrates a theranostic strategy for TB management.
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Affiliation(s)
- Bin Li
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
- School of Inspection, Ningxia Medical University, Yinchuan, China
- Institute of Translational Medicine, Department of Clinical Laboratory & Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, China
| | - Wei Wang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Lu Zhao
- Institute of Translational Medicine, Department of Clinical Laboratory & Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, China
| | - Yunxia Wu
- Institute of Translational Medicine, Department of Clinical Laboratory & Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, China
| | - Xiaoxue Li
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Dingyuan Yan
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China
| | - Qiuxia Gao
- Institute of Translational Medicine, Department of Clinical Laboratory & Department of Burn Surgery, The First People's Hospital of Foshan, Foshan, China
| | - Yan Yan
- Department of Critical Care Medicine, Department of Emergency, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jie Zhang
- Engineering Research Center of Tibetan Medicine Detection Technology, Ministry of Education, Xizang Minzu University, Xianyang, China
| | - Yi Feng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Judun Zheng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Bowen Shu
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Jiamei Wang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Huanhuan Wang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Lingjie He
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Yunlong Zhang
- Department of Critical Care Medicine, Department of Emergency, Renmin Hospital of Wuhan University, Wuhan, China
| | - Mingliang Pan
- Department of Critical Care Medicine, Department of Emergency, Renmin Hospital of Wuhan University, Wuhan, China
| | - Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China.
| | - Ben Zhong Tang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, China.
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, China.
| | - Yuhui Liao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou, China.
- School of Inspection, Ningxia Medical University, Yinchuan, China.
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3
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Lin Y, Zhang Y, Sun H, Jiang H, Zhao X, Teng X, Lin J, Shu B, Sun H, Liao Y, Zhou J. NanoDeep: a deep learning framework for nanopore adaptive sampling on microbial sequencing. Brief Bioinform 2023; 25:bbad499. [PMID: 38189540 PMCID: PMC10772945 DOI: 10.1093/bib/bbad499] [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: 07/30/2023] [Revised: 11/21/2023] [Accepted: 12/11/2023] [Indexed: 01/09/2024] Open
Abstract
Nanopore sequencers can enrich or deplete the targeted DNA molecules in a library by reversing the voltage across individual nanopores. However, it requires substantial computational resources to achieve rapid operations in parallel at read-time sequencing. We present a deep learning framework, NanoDeep, to overcome these limitations by incorporating convolutional neural network and squeeze and excitation. We first showed that the raw squiggle derived from native DNA sequences determines the origin of microbial and human genomes. Then, we demonstrated that NanoDeep successfully classified bacterial reads from the pooled library with human sequence and showed enrichment for bacterial sequence compared with routine nanopore sequencing setting. Further, we showed that NanoDeep improves the sequencing efficiency and preserves the fidelity of bacterial genomes in the mock sample. In addition, NanoDeep performs well in the enrichment of metagenome sequences of gut samples, showing its potential applications in the enrichment of unknown microbiota. Our toolkit is available at https://github.com/lysovosyl/NanoDeep.
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Affiliation(s)
- Yusen Lin
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Yongjun Zhang
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Hang Sun
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Hang Jiang
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Xing Zhao
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
| | - Xiaojuan Teng
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Jingxia Lin
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Bowen Shu
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Hao Sun
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
- Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
| | - Yuhui Liao
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Jiajian Zhou
- Dermatology Hospital, Southern Medical University, Guangzhou, China
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4
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Jiang C, Zheng X, Lin L, Li X, Li X, Liao Y, Jia W, Shu B. CRISPR Cas12a-mediated amplification-free digital DNA assay improves the diagnosis and surveillance of Nasopharyngeal carcinoma. Biosens Bioelectron 2023; 237:115546. [PMID: 37523811 DOI: 10.1016/j.bios.2023.115546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 06/28/2023] [Accepted: 07/21/2023] [Indexed: 08/02/2023]
Abstract
Sensitive and accurate cell-free plasma Epstein-Barr virus (EBV) DNA measurement is essential in the routine diagnosis, monitoring and treatment of Nasopharyngeal Carcinoma (NPC). This measurement in commercial and in-house assay are commonly based on real-time quantitative PCR (qPCR) method, which requires reference materials for standardization and lack quantitative precision due to amplification bias or cross-contamination. To address these issues, we developed a CRISPR/Cas12a-mediated amplification-free digital DNA assay, which targets the repetitive sequences of EBV DNA and utilizes the cis-cleavage activity of CRISPR-Cas12a prior to droplet generation. By this mean, more activated Cas12a-crRNA duplexes could be produced for subsequent target detection and counting, thus improving the performance in detecting low EBV DNA load. We demonstrated that it was more robust than conventional qPCR for detecting plasma EBV DNA in a case-control study of 208 participants, especially when the target concentrations were around the diagnostic cut-off value for NPC. More importantly, this assay allowed a more accurate diagnosis of early-stage NPC, with an area under the curve (AUC) of 0.9883 (versus 0.7682 for qPCR). Furthermore, its absolute quantification capability enabled dynamic monitoring of EBV load in NPC patients during initial diagnosis, treatment, and recurrence, thereby potentially improving disease management and prognosis. Taken together, our results demonstrate that this amplification-free digital assay has the potential to be a robust tool to improve the diagnosis and surveillance of NPC.
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Affiliation(s)
- Chengtao Jiang
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xiaohui Zheng
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Ling Lin
- School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Xinying Li
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China
| | - Xizhao Li
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Ying Liao
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Weihua Jia
- State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
| | - Bowen Shu
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, China.
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5
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Huang R, Shu B. Editorial: Enzyme-based theranostics. Front Bioeng Biotechnol 2023; 11:1280647. [PMID: 37711447 PMCID: PMC10497944 DOI: 10.3389/fbioe.2023.1280647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/16/2023] Open
Affiliation(s)
- Ru Huang
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, China
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, Haikou, China
| | - Bowen Shu
- Dermatology Hospital, Southern Medical University, Guangzhou, China
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6
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Ji Z, Zheng J, Ma Y, Lei H, Lin W, Huang J, Yang H, Zhang G, Li B, Shu B, Du X, Zhang J, Lin H, Liao Y. Emergency Treatment and Photoacoustic Assessment of Spinal Cord Injury Using Reversible Dual-Signal Transform-Based Selenium Antioxidant. Small 2023; 19:e2207888. [PMID: 37127878 DOI: 10.1002/smll.202207888] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Spinal cord injury (SCI), following explosive oxidative stress, causes an abrupt and irreversible pathological deterioration of the central nervous system. Thus, preventing secondary injuries caused by reactive oxygen species (ROS), as well as monitoring and assessing the recovery from SCI are critical for the emergency treatment of SCI. Herein, an emergency treatment strategy is developed for SCI based on the selenium (Se) matrix antioxidant system to effectively inhibit oxidative stress-induced damage and simultaneously real-time evaluate the severity of SCI using a reversible dual-photoacoustic signal (680 and 750 nm). Within the emergency treatment and photoacoustic severity assessment (ETPSA) strategy, the designed Se loaded boron dipyrromethene dye with a double hydroxyl group (Se@BDP-DOH) is simultaneously used as a sensitive reporter group and an excellent antioxidant for effectively eliminating explosive oxidative stress. Se@BDP-DOH is found to promote the recovery of both spinal cord tissue and locomotor function in mice with SCI. Furthermore, ETPSA strategy synergistically enhanced ROS consumption via the caveolin 1 (Cav 1)-related pathways, as confirmed upon treatment with Cav 1 siRNA. Therefore, the ETPSA strategy is a potential tool for improving emergency treatment and photoacoustic assessment of SCI.
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Affiliation(s)
- Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, P. R. China
| | - Judun Zheng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
| | - Yanming Ma
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, P. R. China
| | - Hongyi Lei
- Department of Anesthesiology, Longgang District Central Hospital of Shenzhen, Shenzhen, 518100, P. R. China
| | - Weiqiang Lin
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
| | - Jialin Huang
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
| | - Hua Yang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, P. R. China
| | - Guowei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, P. R. China
| | - Bin Li
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
| | - Bowen Shu
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
| | - Xianjin Du
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, P. R. China
| | - Jian Zhang
- Department of Biomedical Engineering, School of Basic Medical Science, Guang-zhou Medical University, Guangzhou, 511436, P. R. China
| | - Hongsheng Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Guangzhou, 510630, P. R. China
| | - Yuhui Liao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, 510091, P. R. China
- Department of Anesthesiology, Longgang District Central Hospital of Shenzhen, Shenzhen, 518100, P. R. China
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, 750004, P. R. China
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7
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Nganou-Gnindjio C, Tchatou AS, Sap SNU, Shu B, Eock HM, Chelo D. An assessment of the heart function of a group of Cameroonians type I diabetic patients: An echocardiographic cross sectional analytic study. Archives of Cardiovascular Diseases Supplements 2023. [DOI: 10.1016/j.acvdsp.2022.10.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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8
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Wu Y, Yang R, Wu Q, Huang M, Shu B, Wu W, Sun B, Xia J, Chen X, Liao Y. Trace Analysis of Emerging Virus: An Ultrasensitive ECL-Scan Imaging System for Viral Infectious Disease. ACS Omega 2022; 7:37499-37508. [PMID: 36312431 PMCID: PMC9609065 DOI: 10.1021/acsomega.2c04280] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Emerging infectious diseases have brought a huge impact on human society in recent years. The outbreak of Zika virus (ZIKV) in the Americas resulted in a large number of babies born with microcephaly. More seriously, the Coronavirus Disease 2019 (COVID-19) was globally spread and caused immeasurable damages. Thus, the monitoring of highly pathogenic viruses is important to prevent and control emerging infectious diseases. Herein, a dendritic polymer probe-amplified ECL-scan imaging system was constructed to realize trace analysis of viral emerging infectious diseases. A dendritic polymer probe was employed as the efficient signal emitter component that could generate an amplified ECL signal on the integrated chip, and the signal was detected by a single-photon level charge coupled device-based ECL-scan imaging system. With this strategy, the ZIKV in a complex system of blood, urine, and saliva was detected. The results indicated that a high sensitivity of 50 copies and superior specificity were achieved. Furthermore, this strategy realized highly sensitive detection (10 copies) of the S and N protein gene sequence of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-Cov2) and spiked pseudovirus samples. Thus, the dendritic polymer probe-amplified ECL-scan imaging system suitably met the strict clinical requirements for trace analysis of an emerging virus, and thus has the potential to serve as a paradigm for monitoring emerging infectious diseases.
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Affiliation(s)
- Yunxia Wu
- Department
of Burn Surgery & Department of Clinical Laboratory, First People’s Hospital of Foshan, Foshan 528000, China
| | - Ronghua Yang
- Department
of Burn and Plastic Surgery, Guangzhou First
People’s Hospital, Guangzhou 510180, China
| | - Qikang Wu
- Department
of Burn Surgery & Department of Clinical Laboratory, First People’s Hospital of Foshan, Foshan 528000, China
| | - Mingxing Huang
- Department
of Infectious Disease, Fifth Affiliated
Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Bowen Shu
- Molecular
Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, China
| | - Wenjie Wu
- Molecular
Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, China
| | - Baoqing Sun
- Guangzhou
Institute of Respiratory Health, State Key Laboratory of Respiratory
Disease, National Clinical Research Center of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Jinyu Xia
- Department
of Infectious Disease, Fifth Affiliated
Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Xiaodong Chen
- Department
of Burn Surgery & Department of Clinical Laboratory, First People’s Hospital of Foshan, Foshan 528000, China
| | - Yuhui Liao
- Molecular
Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital of Southern Medical University, Guangzhou 510091, China
- Department
of Infectious Disease, Fifth Affiliated
Hospital of Sun Yat-sen University, Zhuhai 519000, China
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9
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Zheng J, Long X, Chen H, Ji Z, Shu B, Yue R, Liao Y, Ma S, Qiao K, Liu Y, Liao Y. Photoclick Reaction Constructs Glutathione-Responsive Theranostic System for Anti-Tuberculosis. Front Mol Biosci 2022; 9:845179. [PMID: 35237665 PMCID: PMC8883117 DOI: 10.3389/fmolb.2022.845179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/29/2021] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
Tuberculosis (TB) is a virulent form of an infectious disease that causes a global burden due to its high infectivity and fatality rate, especially the irrepressible threats of latent infection. Constructing an efficient strategy for the prevention and control of TB is of great significance. Fortunately, we found that granulomas are endowed with higher reducibility levels possibly caused by internal inflammation and a relatively enclosed microenvironment. Therefore, we developed the first targeted glutathione- (GSH-) responsive theranostic system (RIF@Cy5.5-HA-NG) for tuberculosis with a rifampicin- (RIF-) loaded near-infrared emission carrier, which was constructed by photoclick reaction-actuated hydrophobic-hydrophobic interaction, enabling the early diagnosis of tuberculosis through granulomas-tracking. Furthermore, the loaded rifampicin was released through the dissociation of disulfide bond by the localized GSH in granulomas, realizing the targeted tuberculosis therapy and providing an especially accurate treatment mapping for tuberculosis. Thus, this targeted theranostic strategy for tuberculosis exhibits the potential to realize both granulomas-tracking and anti-infection of tuberculosis.
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Affiliation(s)
- Judun Zheng
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Xun Long
- Department of Science and Education, The Third People’s Hospital of Bijie City, Bijie, China
| | - Hao Chen
- Division of Gastrointestinal Surgery, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhisheng Ji
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Bowen Shu
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Rui Yue
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Yechun Liao
- Department of Science and Education, The Third People’s Hospital of Bijie City, Bijie, China
| | - Shengchao Ma
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, China
- *Correspondence: Shengchao Ma, ; Kun Qiao, ; Ying Liu, ; Yuhui Liao,
| | - Kun Qiao
- Department of Thoracic Surgery, Shenzhen Third People’s Hospital, Shenzhen, China
- *Correspondence: Shengchao Ma, ; Kun Qiao, ; Ying Liu, ; Yuhui Liao,
| | - Ying Liu
- Department of Science and Education, The Third People’s Hospital of Bijie City, Bijie, China
- *Correspondence: Shengchao Ma, ; Kun Qiao, ; Ying Liu, ; Yuhui Liao,
| | - Yuhui Liao
- Molecular Diagnosis and Treatment Center for Infectious Diseases, Dermatology Hospital, Southern Medical University, Guangzhou, China
- NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Ningxia Key Laboratory of Vascular Injury and Repair Research, Ningxia Medical University, Yinchuan, China
- Department of Infectious Disease, The Fifth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Shengchao Ma, ; Kun Qiao, ; Ying Liu, ; Yuhui Liao,
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10
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Jiang C, Fu Y, Liu G, Shu B, Davis J, Tofaris GK. Multiplexed Profiling of Extracellular Vesicles for Biomarker Development. Nanomicro Lett 2021; 14:3. [PMID: 34855021 PMCID: PMC8638654 DOI: 10.1007/s40820-021-00753-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 10/22/2021] [Indexed: 05/09/2023]
Abstract
Extracellular vesicles (EVs) are cell-derived membranous particles that play a crucial role in molecular trafficking, intercellular transport and the egress of unwanted proteins. They have been implicated in many diseases including cancer and neurodegeneration. EVs are detected in all bodily fluids, and their protein and nucleic acid content offers a means of assessing the status of the cells from which they originated. As such, they provide opportunities in biomarker discovery for diagnosis, prognosis or the stratification of diseases as well as an objective monitoring of therapies. The simultaneous assaying of multiple EV-derived markers will be required for an impactful practical application, and multiplexing platforms have evolved with the potential to achieve this. Herein, we provide a comprehensive overview of the currently available multiplexing platforms for EV analysis, with a primary focus on miniaturized and integrated devices that offer potential step changes in analytical power, throughput and consistency.
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Affiliation(s)
- Cheng Jiang
- Nuffield Department of Clinical Neurosciences, New Biochemistry Building, University of Oxford, Oxford, OX1 3QU, UK.
- Department of Chemistry, University of Oxford, Oxford, OX1 3QZ, UK.
- Kavli Institute for Nanoscience Discovery, New Biochemistry Building, University of Oxford, Oxford, UK.
| | - Ying Fu
- Department of Chemistry, University of Oxford, Oxford, OX1 3QZ, UK
| | - Guozhen Liu
- School of Life and Health Sciences, The Chinese University of Hong Kong, Shenzhen, 518172, People's Republic of China
| | - Bowen Shu
- Dermatology Hospital, Southern Medical University, Guangzhou, 510091, People's Republic of China
| | - Jason Davis
- Department of Chemistry, University of Oxford, Oxford, OX1 3QZ, UK.
| | - George K Tofaris
- Nuffield Department of Clinical Neurosciences, New Biochemistry Building, University of Oxford, Oxford, OX1 3QU, UK.
- Kavli Institute for Nanoscience Discovery, New Biochemistry Building, University of Oxford, Oxford, UK.
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11
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Yue H, Shu B, Tian T, Xiong E, Huang M, Zhu D, Sun J, Liu Q, Wang S, Li Y, Zhou X. Droplet Cas12a Assay Enables DNA Quantification from Unamplified Samples at the Single-Molecule Level. Nano Lett 2021; 21:4643-4653. [PMID: 34038136 DOI: 10.1021/acs.nanolett.1c00715] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
DNA quantification is important for biomedical research, but the routinely used techniques rely on nucleic acid amplification which have inherent issues like cross-contamination risk and quantification bias. Here, we report a CRISPR-Cas12a-based molecular diagnostic technique for amplification-free and absolute quantification of DNA at the single-molecule level. To achieve this, we first screened out the optimal reaction parameters for high-efficient Cas12a assay, yielding over 50-fold improvement in sensitivity compared with the reported Cas12a assays. We further leveraged the microdroplet-enabled confinement effect to perform an ultralocalized droplet Cas12a assay, obtaining excellent specificity and single-molecule sensitivity. Moreover, we demonstrated its versatility and quantification capability by direct counting of diverse virus's DNAs (African swine fever virus, Epstein-Barr virus, and Hepatitis B virus) from clinical serum samples with a wide range of viral titers. Given the flexible programmability of crRNA, we envision this amplification-free technique as a versatile and quantitative platform for molecular diagnosis.
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Affiliation(s)
- Huahua Yue
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Bowen Shu
- Dermatology Hospital, Southern Medical University, Guangzhou 510091, China
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, China
| | - Tian Tian
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Erhu Xiong
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Mengqi Huang
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Debin Zhu
- Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou 510006, China
| | - Jian Sun
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China
- Research Center for African Swine Fever Prevention and Control, South China Agricultural University, Guangzhou 510642, China
| | - Qing Liu
- Department of Molecular Diagnostics, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510700, China
| | - Shichan Wang
- Department of Laboratory Medicine, Zhongnan Hospital, Wuhan University, Wuhan 430071, China
| | - Yirong Li
- Department of Laboratory Medicine, Zhongnan Hospital, Wuhan University, Wuhan 430071, China
| | - Xiaoming Zhou
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
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12
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Shu B, Lin L, Wu B, Huang E, Wang Y, Li Z, He H, Lei X, Xu B, Liu D. A pocket-sized device automates multiplexed point-of-care RNA testing for rapid screening of infectious pathogens. Biosens Bioelectron 2021; 181:113145. [PMID: 33752027 DOI: 10.1016/j.bios.2021.113145] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/13/2021] [Accepted: 03/01/2021] [Indexed: 01/03/2023]
Abstract
Rapid screening of infectious pathogens at the point-of-care (POC) is ideally low-cost, portable, easy to use, and capable of multiplex detection with high sensitivity. However, satisfying all these features in a single device without compromise remains a challenging task. Here, we introduce an ultraportable, automated RNA amplification testing device that allows rapid screening of infectious pathogens from clinical samples. In this device, 3D-printed structural parts incorporated with off-the-shelf mechanic/electronic components are utilized to create an inexpensive and automated droplet manipulation platform. On this platform, a simple configuration that couples a linear displacement of the chip with a tunable magnet array allows parallel and versatile droplet operations, including mixing, splitting, transporting, and merging. By exploiting a multi-channel droplet array chip to preload necessary reagents in "water-in-oil" format, bacteria lysis, RNA extraction and amplification are seamlessly integrated and implemented by the combination of droplet operations. Furthermore, visual readout and geometrically-multiplexed quantitative detection are provided by an integrated wireless video camera-enabled wide-field fluorescence imaging. We demonstrated that this droplet-based device could have a shorter RNA extraction time (12 min) and lower detection limits for pathogenic RNA (approaching to 102 copies per reaction). We also verified its clinical applicability for the rapid screening of four sexually transmitted pathogens from urine specimens. Results show that the sample-to-answer assay could be completed in approximately 42 min, with 100% concordance with the laboratory-based molecular testing. The exhibiting features may render this microdevice an easily accessible POC molecular diagnostic platform for infectious disease, especially in resource-limited settings.
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Affiliation(s)
- Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China; Guangdong Engineering Technology Research Center of Microfluidic Chip Medical Diagnosis, Guangzhou, 510180, China
| | - Ling Lin
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Bin Wu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China; Guangdong Engineering Technology Research Center of Microfluidic Chip Medical Diagnosis, Guangzhou, 510180, China
| | - Enqi Huang
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, China
| | - Yu Wang
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China; Guangdong Engineering Technology Research Center of Microfluidic Chip Medical Diagnosis, Guangzhou, 510180, China
| | - Zhujun Li
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, China
| | - Haoyan He
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, China
| | - Xiuxia Lei
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China
| | - Banglao Xu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China.
| | - Dayu Liu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China; Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, China; Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou, 510180, China; Guangdong Engineering Technology Research Center of Microfluidic Chip Medical Diagnosis, Guangzhou, 510180, China.
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13
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Tian T, Shu B, Jiang Y, Ye M, Liu L, Guo Z, Han Z, Wang Z, Zhou X. An Ultralocalized Cas13a Assay Enables Universal and Nucleic Acid Amplification-Free Single-Molecule RNA Diagnostics. ACS Nano 2021; 15:1167-1178. [PMID: 33498106 DOI: 10.1021/acsnano.0c08165] [Citation(s) in RCA: 150] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Existing methods for RNA diagnostics, such as reverse transcription PCR (RT-PCR), mainly rely on nucleic acid amplification (NAA) and RT processes, which are known to introduce substantial issues, including amplification bias, cross-contamination, and sample loss. To address these problems, we introduce a confinement effect-inspired Cas13a assay for single-molecule RNA diagnostics, eliminating the need for NAA and RT. This assay involves confining the RNA-triggered Cas13a catalysis system in cell-like-sized reactors to enhance local concentrations of target and reporter simultaneously, via droplet microfluidics. It achieves >10 000-fold enhancement in sensitivity when compared to the bulk Cas13a assay and enables absolute digital single-molecule RNA quantitation. We experimentally demonstrate its broad applicability for precisely counting microRNAs, 16S rRNAs, and SARS-CoV-2 RNA from synthetic sequences to clinical samples with excellent accuracy. Notably, this direct RNA diagnostic technology enables detecting a wide range of RNA molecules at the single-molecule level. Moreover, its simplicity, universality, and excellent quantification capability might render it to be a dominant rival to RT-qPCR.
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Affiliation(s)
- Tian Tian
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
| | - Yongzhong Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
- Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - Miaomiao Ye
- Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, China
| | - Lei Liu
- Institute for Brain Research and Rehabilitation, Guangdong Key Laboratory of Mental Health and Cognitive Science, Center for Studies of Psychological Application, South China Normal University, Guangzhou 510631, China
| | - Zhonghui Guo
- Department of Clinical Laboratory Medicine, Central Hospital of Panyu District, Guangzhou 511400, China
| | - Zeping Han
- Department of Clinical Laboratory Medicine, Central Hospital of Panyu District, Guangzhou 511400, China
| | - Zhang Wang
- Institute of Ecological Science, School of Life Sciences, South China Normal University, Guangzhou 510180, China
| | - Xiaoming Zhou
- School of Life Sciences, South China Normal University, Guangzhou 510631, China
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14
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Jiang J, Wu H, Su Y, Liang Y, Shu B, Zhang C. Electrochemical Cloth-Based DNA Sensors (ECDSs): A New Class of Electrochemical Gene Sensors. Anal Chem 2020; 92:7708-7716. [DOI: 10.1021/acs.analchem.0c00669] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jun Jiang
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Hongyang Wu
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Yan Su
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Yi Liang
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, China
| | - Chunsun Zhang
- MOE Key Laboratory of Laser Life Science & Guangdong Provincial Key Laboratory of Laser Life Science, South China Normal University, Guangzhou 510631, China
- College of Biophotonics, South China Normal University, Guangzhou 510631, China
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15
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Guan T, He J, Liu D, Liang Z, Shu B, Chen Y, Liu Y, Shen X, Li X, Sun Y, Lei H. Open Surface Droplet Microfluidic Magnetosensor for Microcystin-LR Monitoring in Reservoir. Anal Chem 2020; 92:3409-3416. [PMID: 31948225 DOI: 10.1021/acs.analchem.9b05516] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Establishing rapid, simple, and in situ detection of microcystin-LR (MC-LR) in drinking water sources is of significant importance for human health. To ease the situation that current methods cannot address, an open surface droplet microfluidic magnetosensor was designed and validated to quantify MC-LR in reservoir water, which is capable of (1) MC-LR isolation via MC-LR antibody-conjugated magnetic beads, (2) parallel and multistep analytical procedures in 15-array power-free and reusable active droplet microfluidic chips, (3) immunoassay incubation and fluorescence excitation within a miniaturized multifunctional 3D-printing optosensing accessory, and (4) signal read-out and data analysis by a user-friendly Android app. The proposed smartphone-based fluorimetric magnetosensor exhibited a low limit of detection of 1.2 × 10-5 μg/L in the range of 10-4 μg/L to 100 μg/L. This integrated and high throughput platform was utilized to draw an MC-LR contamination map for six reservoirs distributed in the Pearl River delta, Guangdong Province. It promises to be a simple and successful quantification method for MC-LR field detection, bringing many benefits to rapid on-site screening.
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Affiliation(s)
- Tian Guan
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou 510642 , China
| | - Jianfei He
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Dayu Liu
- Department of Laboratory Medicine, Guangzhou First People's Hospital , Guangzhou Medical University , Guangzhou 510180 , China
| | - Zaoqing Liang
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People's Hospital , Guangzhou Medical University , Guangzhou 510180 , China
| | - Yiping Chen
- College of Food Science and Technology , Huazhong Agricultural University , Wuhan , 430070 , China
| | - Yingju Liu
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Xing Shen
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Xiangmei Li
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Yuanming Sun
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China
| | - Hongtao Lei
- Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science , South China Agricultural University , Guangzhou 510642 , China.,Guangdong Laboratory for Lingnan Modern Agriculture , Guangzhou 510642 , China
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16
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Li SH, Zhong N, Shu B, Guan H. [Summary of the 2019 Academic Annual Meeting of the Chinese Burn Association]. Zhonghua Shao Shang Za Zhi 2019; 35:894-896. [PMID: 31877616 DOI: 10.3760/cma.j.issn.1009-2587.2019.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The 2019 Academic Annual Meeting of the Chinese Burn Association, sponsored by the Chinese Medical Association and the Chinese Burn Association, was successfully held in Zhuhai, Guangdong province, from November 6th to 9th, 2019. The theme of this conference was " One China, One Standard--Data Standardization and Construction of National Burn Data Platform" . A total of 2 305 submissions and 1 749 e-posters were received, and 1 097 registered representatives, nearly 2 000 representatives from 9 countries and regions attended the meeting. Focusing on the theme of this conference, a variety of novel forms were adopted such as teaching contest of young surgeons, multi-disciplinary discussion, workshop, and surgery live broadcast on hot issues in key areas of burns. Besides, with the focus on humanistic care and innovation, a multi-disciplinary discussion was warmly conducted. The 2020 academic annual conference is scheduled to be held in Nanchang, China.
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Affiliation(s)
- S H Li
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - N Zhong
- Academic Department of Chinese Medical Association, Beijing 100710, China
| | - B Shu
- Department of Burns, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - H Guan
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
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17
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Zhu CX, Li WZ, Guo YL, Chen L, Li GH, Yu JJ, Shu B, Peng S. Tumor suppressor RKIP inhibits prostate cancer cell metastasis and sensitizes prostate cancer cells to docetaxel treatment. Neoplasma 2019. [PMID: 29534584 DOI: 10.4149/neo_2018_170203n72] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Raf kinase inhibitory protein (RKIP) is a well-established metastasis suppressor that is frequently down-regulated in aggressive cancers. However, the impact of RKIP on cancer cell invasion and metastasis in prostate cancer is still elusive. To this end, we overexpressed RKIP in two prostate cancer cell lines. We found that overexpression of RKIP inhibited prostate cancer cells proliferation, migration and invasion. Mechanistically, we found that RKIP overexpression led to down-regula- tion of the NF-kB signaling pathway and inhibition of the epithelial-to-mesenchymal transition, which is important step for cancer metastasis. In addition, overexpression of RKIP can promote drug effects of docetaxel on prostate cancer cell lines. In conclusion, overexpression of RKIP significantly inhibits prostate cancer cell migration and metastasis, and overexpression of RKIP could aid prostate cancer treatment and therapy.
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Li SH, Zhong N, Shu B, Guan H. [Summary of the 2018 Academic Annual Meeting of the Chinese Burn Association]. Zhonghua Shao Shang Za Zhi 2018; 34:914-916. [PMID: 30585058 DOI: 10.3760/cma.j.issn.1009-2587.2018.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The 2018 Academic Annual Meeting of the Chinese Burn Association, sponsored by the Chinese Medical Association and the Chinese Burn Association, was successfully held in Fuzhou, Fujian Province, from October 24th to 27th. The theme of this conference is " One China, One Standard". A total of 1, 798 submissions were received, and 1, 060 registered representatives, more than 2, 000 representatives from 9 countries and regions attended the meeting. Focusing on the theme of " One China, One Standard" , the conference adopted a variety of innovative forms such as academic debate, live surgery, BBS on both sides of the straits, award selection, and so on to provide participants with multiple ways for exchange on the professional hot issues in the key areas of burns. The atmosphere of the conference was warm. The 2019 annual academic conference is scheduled to be held in Zhuhai, China.
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Affiliation(s)
- S H Li
- Department of Burns and Cutaneous Surgery, Burn Center of PLA, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
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Hummel T, Whitcroft KL, Andrews P, Altundag A, Cinghi C, Costanzo RM, Damm M, Frasnelli J, Gudziol H, Gupta N, Haehne A, Holbrook E, Hong SC, Hornung D, Hüttenbrink KB, Kamel R, Kobayashi M, Konstantinidis I, Landis BN, Leopold DA, Macchi A, Miwa T, Moesges R, Mullol J, Mueller CA, Ottaviano G, Passali GC, Philpott C, Pinto JM, Ramakrishnan VJ, Rombaux P, Roth Y, Schlosser RA, Shu B, Soler G, Stjärne P, Stuck BA, Vodicka J, Welge-Luessen A. Position paper on olfactory dysfunction. Rhinology 2018. [PMID: 29528615 DOI: 10.4193/rhino16.248] [Citation(s) in RCA: 373] [Impact Index Per Article: 62.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Background Olfactory dysfunction is an increasingly recognised condition, associated with reduced quality of life and major
health outcomes such as neurodegeneration and death. However, translational research in this field is limited by heterogeneity in methodological approach, including definitions of impairment, improvement and appropriate assessment techniques. Accordingly, effective treatments for smell loss are limited. In an effort to encourage high quality and comparable work in this field, among others, we propose the following ideas and recommendations. Whilst the full set of recommendations are outlined in the main document, points include the following:
• Patients with suspected olfactory loss should undergo a full examination of the head and neck, including rigid nasal endoscopy
with small diameter endoscopes.
• Subjective olfactory assessment should not be undertaken in isolation, given its poor reliability.
• Psychophysical assessment tools used in clinical and research settings should include reliable and validated tests of odour
threshold, and/or one of odour identification or discrimination.
• Comprehensive chemosensory assessment should include gustatory screening.
• Smell training can be helpful in patients with olfactory loss of several aetiologies. Conclusions We hope the current manuscript will encourage clinicians and researchers to adopt a common language, and in so doing, increase the methodological quality, consistency and generalisability of work in this field.
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Shu B, Li Z, Yang X, Xiao F, Lin D, Lei X, Xu B, Liu D. Active droplet-array (ADA) microfluidics enables multiplexed complex bioassays for point of care testing. Chem Commun (Camb) 2018; 54:2232-2235. [PMID: 29431774 DOI: 10.1039/c7cc09377b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We introduce a novel and versatile microfluidic technology that allows parallel and multi-step bioanalytical procedures to be simply implemented by switching reagent-containing droplet arrays among alternative interaction zones for intended mass or energy transport in a programmable manner. This enables multiplexed complex bioassays for point-of-care testing.
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Affiliation(s)
- Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China
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21
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Lin D, Li P, Lin J, Shu B, Wang W, Zhang Q, Yang N, Liu D, Xu B. Orthogonal Screening of Anticancer Drugs Using an Open-Access Microfluidic Tissue Array System. Anal Chem 2017; 89:11976-11984. [PMID: 29053257 DOI: 10.1021/acs.analchem.7b02021] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Screening for potential drug combinations presents significant challenges to the current microfluidic cell culture systems, due to the requirement of flexibility in liquid handling. To overcome this limitation, we present here an open-access microfluidic tissue array system specifically designed for drug combination screening. The microfluidic chip features a key structure in which a nanoporous membrane is sandwiched by a cell culture chamber array layer and a corresponding media reservoir array layer. The microfluidic approach takes advantage of the characteristics of the nanoporous membrane: on one side, this membrane permits the flow of air but not liquid, thus acting as a flow-stop valve to enable automatic cell distribution; on the other side, it allows diffusion-based media exchange and thus mimics the endothelial layer. In synergy with a liquid-transferring platform, the open-access microfluidic system enables complex multistep operations involving long-term cell culture, medium exchange, multistep drug treatment, and cell-viability testing. By using the microfluidic protocol, a 10 × 10 tissue array was constructed in 90 s, followed by schedule-dependent drug testing. Morphological and immunohistochemical assays indicated that the resultant tumor tissue was faithful to that in vivo. Drug-testing assays showed that the incorporation of the nanoporous membrane further decreased killing efficacy of the anticancer agents, indicating its function as an endothelial layer. Robustness of the microfluidic system was demonstrated by implementing a three-factor, three-level orthogonal screening of anticancer drug combinations, with which 67% of the testing (9 vs. 27) was saved. Experimental results demonstrated that the microfluidic tissue system presented herein is flexible and easy-to-use, thus providing an ideal tool for performing complex multistep cell assays with high efficiencies.
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Affiliation(s)
- Dongguo Lin
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of South China University of Technology , Guangzhou 510180, China.,Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province , Guangzhou 510180, China
| | - Peiwen Li
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China
| | - Jinqiong Lin
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China
| | - Bowen Shu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of South China University of Technology , Guangzhou 510180, China.,Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province , Guangzhou 510180, China
| | - Weixin Wang
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China
| | - Qiong Zhang
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China
| | - Na Yang
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of South China University of Technology , Guangzhou 510180, China.,Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province , Guangzhou 510180, China
| | - Dayu Liu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of South China University of Technology , Guangzhou 510180, China.,Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province , Guangzhou 510180, China
| | - Banglao Xu
- Department of Laboratory Medicine, Guangzhou First People's Hospital, Guangzhou Medical University , Guangzhou 510180, China.,Department of Laboratory Medicine, The Second Affiliated Hospital of South China University of Technology , Guangzhou 510180, China.,Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province , Guangzhou 510180, China
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22
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Hummel T, Whitcroft KL, Andrews P, Altundag A, Cinghi C, Costanzo RM, Damm M, Frasnelli J, Gudziol H, Gupta N, Haehner A, Holbrook E, Hong SC, Hornung D, Hüttenbrink KB, Kamel R, Kobayashi M, Konstantinidis I, Landis BN, Leopold DA, Macchi A, Miwa T, Moesges R, Mullol J, Mueller CA, Ottaviano G, Passali GC, Philpott C, Pinto JM, Ramakrishnan VJ, Rombaux P, Roth Y, Schlosser RA, Shu B, Soler G, Stjärne P, Stuck BA, Vodicka J, Welge-Luessen A. Position paper on olfactory dysfunction. Rhinology 2017. [PMID: 28623665 DOI: 10.4193/rhin16.248] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Olfactory dysfunction is an increasingly recognised condition, associated with reduced quality of life and major health outcomes such as neurodegeneration and death. However, translational research in this field is limited by heterogeneity in methodological approach, including definitions of impairment, improvement and appropriate assessment techniques. Accordingly, effective treatments for smell loss are limited. In an effort to encourage high quality and comparable work in this field, among others, we propose the following ideas and recommendations. Whilst the full set of recommendations are outlined in the main document, points include the following: - Patients with suspected olfactory loss should undergo a full examination of the head and neck, including rigid nasal endoscopy with small diameter endoscopes. - Subjective olfactory assessment should not be undertaken in isolation, given its poor reliability. - Psychophysical assessment tools used in clinical and research settings should include reliable and validated tests of odour threshold, and/or one of odour identification or discrimination. - Comprehensive chemosensory assessment should include gustatory screening. - Smell training can be helpful in patients with olfactory loss of several aetiologies. CONCLUSIONS We hope the current manuscript will encourage clinicians and researchers to adopt a common language, and in so doing, increase the methodological quality, consistency and generalisability of work in this field.
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Affiliation(s)
- T Hummel
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - K L Whitcroft
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - P Andrews
- UCL Ear Institute, Faculty of Brain Sciences, University College London, London, UK
| | - A Altundag
- Department of Otorhinolaryngoglogy, Istanbul Surgery Hospital, Istanbul, Turkey
| | - C Cinghi
- Department of Otolaryngology; Eskisehir Osmangazi University, Istanbul, Turkey
| | - R M Costanzo
- Smell and Taste Disorders Center, Department of Otolaryngology Head and Neck Surgery, VCU School of Medicine, Richmond, VA, USA
| | - M Damm
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Cologne Medical Center, Cologne, Germany
| | - J Frasnelli
- Research Chair in Chemosensory Neuroanatomy, Department of Anatomy, Universite du Quebec a Trois-Rivieres, Trois-Rivieres, QC, Canada
| | - H Gudziol
- Department of Otorhinolaryngology, University of Jena, Jena, Germany
| | - N Gupta
- Department of Otorhinolaryngology, University College of Medical Sciences and GTB Hospital, Delhi, India
| | - A Haehner
- Smell and Taste Clinic, Department of Otorhinolaryngology, TU Dresden, Dresden, Germany
| | - E Holbrook
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - S C Hong
- Department of Otorhinolaryngology, Konkuk University Medical Center, Hwayang-dong, Gwangjin-gu, Seoul, South Korea
| | - D Hornung
- Dept. of Biology, St. Lawrence University, Canton, NY, USA
| | | | - R Kamel
- Department of Otorhinolaryngology, Cairo University, Cairo, Egypt
| | - M Kobayashi
- Department of Otorhinolaryngology-Head and Neck Surgery, Mie University Graduate School of Medicine, Mie, Japan
| | - I Konstantinidis
- Smell and Taste Clinic, Second Academic Otorhinolaryngology Department, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - B N Landis
- Department for ENT, Head and Neck Surgery, Bern University Hospital, Bern, Switzerland
| | - D A Leopold
- Division of Otorhinolaryngology-Head and Neck Surgery, Department of Surgery, University of Vermont Medical Center, Burlington, Vermont, USA
| | - A Macchi
- ENT Clinic, University of Insubria, ASST, sette laghi, Varese, Italy
| | - T Miwa
- Department of Otorhinolaryngology, Kanazawa Medical University, Uchinada, Kahoku, Ishikawa, Japan
| | - R Moesges
- Institute of Medical Statistics, Informatics and Epidemiology, University Hospital of Cologne, Cologne, Germany
| | - J Mullol
- Rhinology Unit and Smell Clinic, IDIBAPS, University of Barcelona, Barcelona, Catalonia, Spain
| | - C A Mueller
- Department of Otorhinolaryngology, Medical University of Vienna, Vienna, Austria
| | - G Ottaviano
- Department of Neurosciences DNS, Otolaryngology Section, University, Padua, Italy
| | - G C Passali
- Head and Neck section, Department of Aging, Neurosciences, Head and Neck and Orthopedic; Catholic University of Sacred heart, A. Gemelli Hospital Foundation, Rome, Italy
| | - C Philpott
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - J M Pinto
- Section of Otolaryngology-Head and Neck Surgery, The University of Chicago Medicine and Biological Sciences, Chicago, IL, USA
| | - V J Ramakrishnan
- Departments of Otolaryngology and Neurosurgery, University of Colorado, Aurora, CO, USA
| | - P Rombaux
- Universite Catholique de Louvain, Institute of Neurosciences, Unit of Otorhinolaryngology, Brussels, Belgium
| | - Y Roth
- The Institute for Nose and Sinus Therapy and Clinical Investigations, Department of Otolaryngology - Head and Neck Surgery, Edith Wolfson Medical Center, Tel Aviv University Sackler Faculty of Medicine, Holon, Israel
| | - R A Schlosser
- Department of Otolaryngology, Head and Neck Surgery, Medical Univeristy of South Carolina, Charleston, SC, USA
| | - B Shu
- Department of Otolaryngology, Taipei Veterans General Hospital, National Yang Ming University School of Medicine Faculty of Medicine, Taipei, Taiwan
| | - G Soler
- Division of Otorhinolaryngology, Area of Smell and Taste, Hospital de Clinicas, University of Buenos Aires, Buenos Aires City, Argentina
| | - P Stjärne
- Section of Rhinology, Department of Otorhinolaryngology, Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - B A Stuck
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Essen, University Duisburg-Essen, Germany
| | - J Vodicka
- Department of Otorhinolaryngology and Head and Neck Surgery, Hospital Pardubice, Faculty of Health Studies, University of Pardubice, Pardubice, Czech Republic
| | - A Welge-Luessen
- University Hospital Basel - Otorhinolaryngology, Basel, Switzerland
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23
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Xu B, Du Y, Lin J, Qi M, Shu B, Wen X, Liang G, Chen B, Liu D. Simultaneous Identification and Antimicrobial Susceptibility Testing of Multiple Uropathogens on a Microfluidic Chip with Paper-Supported Cell Culture Arrays. Anal Chem 2016; 88:11593-11600. [PMID: 27934103 DOI: 10.1021/acs.analchem.6b03052] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Banglao Xu
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
| | - Yan Du
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
| | - Jinqiong Lin
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
| | - Mingyue Qi
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
| | - Bowen Shu
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
| | - Xiaoxia Wen
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
| | - Guangtie Liang
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
| | - Bin Chen
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
| | - Dayu Liu
- Department
of Laboratory Medicine, Guangzhou First People’s Hospital, Affiliated Hospital of Guangzhou Medical University, Guangzhou 510180, China
- Clinical Molecular Medicine and Molecular Diagnosis Key Laboratory of Guangdong Province, Guangzhou 510180, China
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24
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Sela P, Shu B, Aghsaee M, Herzler J, Welz O, Fikri M, Schulz C. A single-pulse shock tube coupled with high-repetition-rate time-of-flight mass spectrometry and gas chromatography for high-temperature gas-phase kinetics studies. Rev Sci Instrum 2016; 87:105103. [PMID: 27802766 DOI: 10.1063/1.4963844] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Shock tubes are frequently used to investigate the kinetics of chemical reactions in the gas phase at high temperatures. Conventionally, two complementary arrangements are used where either time-resolved intermediate species measurements are conducted after the initiation of the reaction or where the product composition is determined after rapid initiation and quenching of the reaction through gas-dynamic processes. This paper presents a facility that combines both approaches to determine comprehensive information. A single-pulse shock tube is combined with high-sensitivity gas chromatography/mass spectrometry for product composition and concentration measurement as well as high-repetition-rate time-of-flight mass spectrometry for time-dependent intermediate concentration determination with 10 μs time resolution. Both methods can be applied simultaneously. The arrangement is validated with investigations of the well-documented thermal unimolecular decomposition of cyclohexene towards ethylene and 1,3-butadiene at temperatures between 1000 and 1500 K and pressures ranging from 0.8 to 2.4 bars. The comparison shows that the experimental results for both detections are in very good agreement with each other and with literature data.
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Affiliation(s)
- P Sela
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - B Shu
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - M Aghsaee
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - J Herzler
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - O Welz
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - M Fikri
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
| | - C Schulz
- Institute for Combustion and Gas Dynamics - Reactive Fluids, and CENIDE, Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Duisburg, Germany
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25
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Wang J, Yao M, Xu JH, Shu B, Wang YJ, Cui XJ. Bisphosphonates for prevention of osteopenia in kidney-transplant recipients: a systematic review of randomized controlled trials. Osteoporos Int 2016; 27:1683-90. [PMID: 26733377 DOI: 10.1007/s00198-015-3465-7] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/15/2015] [Indexed: 12/19/2022]
Abstract
We conducted a systematic review of randomized controlled trials (RCTs) of bisphosphonates for the prevention of osteopenia in kidney-transplant recipients. Bisphosphonates improved bone mineral density at the lumbar spine and femoral neck after 12 months. However, additional well-designed RCTs are required to determine the optimal treatment strategy. Osteopenic-osteoporotic syndrome is a bone complication of renal transplantation. Bisphosphonates, calcitonin, and vitamin D analogs may be used to prevent or treat osteoporosis or bone loss after renal transplantation. However, there is currently no widely recognized strategy for the prevention of corticosteroid-induced osteoporosis. This study aims to assess the available evidence to guide the targeted use of bisphosphonates for reducing osteoporosis and bone loss in renal-transplant recipients. We searched the Cochrane Central Register of Controlled Trials, PubMed, and EMBASE for randomized controlled trials of bisphosphonates for osteoporosis or bone loss after renal transplantation. A total of 352 abstracts were identified, of which 55 were considered for evaluation and 9 were included in the final analysis. The primary outcome measure was change in the bone mineral density (BMD) of the lumbar spine and femoral neck after 12 months. Data extraction was performed independently by two investigators. BMD at the lumbar spine was improved after treatment with bisphosphonates [9 trials; 418 patients; weighted mean difference (WMD), 0.61; 95 % confidence interval (CI), 0.16-1.06]. Eight trials (406 patients) that reported changes in BMD at the femoral neck also showed improved outcomes after treatment with bisphosphonates (WMD, 0.06; 95 % CI, 0.03-0.09). Bisphosphonates improve BMD at the lumbar spine and femoral neck after 12 months in renal-transplant recipients.
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Affiliation(s)
- J Wang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - M Yao
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
- Institute of Spine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - J-h Xu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - B Shu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
- Institute of Spine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - Y-j Wang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
- Institute of Spine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China
| | - X-j Cui
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China.
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26
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Shu B, Zhang C, Xing D. A handheld flow genetic analysis system (FGAS): towards rapid, sensitive, quantitative and multiplex molecular diagnosis at the point-of-care level. Lab Chip 2015; 15:2597-605. [PMID: 25953325 DOI: 10.1039/c5lc00139k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A handheld flow genetic analysis system (FGAS) is proposed for rapid, sensitive, multiplex and real-time quantification of nucleic acids at the point-of-care (POC) level. The FGAS includes a helical thermal-gradient microreactor and a microflow actuator, as well as control circuitry for temperature, fluid and power management, and smartphone fluorescence imaging. All of these features are integrated into a field-portable and easy-to-use molecular diagnostic platform powered by lithium batteries. Due to the unique design of the microreactor, not only steady temperatures for denaturation and annealing/extension but also a linear thermal gradient for spatial high-resolution melting can be achieved through simply maintaining a single heater at constant temperature. The smartphone fluorescence imaging system has a wide field of view that captures all PCR channels of the microreactor in a single snapshot without the need for any mechanical scanning. By these designs, the FGAS enables real-time monitoring of the temporal and spatial fluorescence signatures of amplicons during continuous-flow amplification. On the current FGAS, visual detection of as little as 10 copies per μL of genomic DNA of Salmonella enterica was achieved in 15 min, with real-time quantitative detection of the DNA over 6 orders of magnitude concentration from 10(6) to 10(1) copies per μL also completed in 7.5-15 min. In addition, multiple pathogenic DNA targets could be simultaneously discriminated with direct bar-chart readout or multiplex spatial melting in serial flow. We anticipate that the FGAS has great potential to become a next-generation gene analyzer for POC molecular diagnostics.
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Affiliation(s)
- Bowen Shu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China.
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27
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Li Z, He SQ, Tseng PY, Xu Q, Tiwari V, Yang F, Shu B, Zhang T, Tang Z, Raja SN, Wang Y, Dong X, Guan Y. The inhibition of high-voltage-activated calcium current by activation of MrgC11 involves phospholipase C-dependent mechanisms. Neuroscience 2015; 300:393-403. [PMID: 26022362 DOI: 10.1016/j.neuroscience.2015.05.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 05/05/2015] [Accepted: 05/18/2015] [Indexed: 01/27/2023]
Abstract
High-voltage-activated (HVA) calcium channels play an important role in synaptic transmission. Activation of Mas-related G-protein-coupled receptor subtype C (MrgC; mouse MrgC11, rat homolog rMrgC) inhibits HVA calcium current (ICa) in small-diameter dorsal root ganglion (DRG) neurons, but the intracellular signaling cascade underlying MrgC agonist-induced inhibition of HVA ICa in native DRG neurons remains unclear. To address this question, we conducted patch-clamp recordings in MrgA3-eGFP-wild-type mice, in which most MrgA3-eGFP(+) DRG neurons co-express MrgC11 and can be identified for recording. We found that the inhibition of HVA ICa by JHU58 (0.001-100nM, a dipeptide, MrgC-selective agonist) was significantly reduced by pretreatment with a phospholipase C (PLC) inhibitor (U73122, 1μM), but not by its inactive analog (U73343) or vehicle. Further, in rats that had undergone spinal nerve injury, pretreatment with intrathecal U73122 nearly abolished the inhibition of mechanical hypersensitivity by intrathecal JHU58. The inhibition of HVA ICa in MrgA3-eGFP(+) neurons by JHU58 (100nM) was partially reduced by pretreatment with a Gβγ blocker (gallein, 100μM). However, applying a depolarizing prepulse and blocking the Gαi and Gαs pathways with pertussis toxin (PTX) (0.5μg/mL) and cholera toxin (CTX) (0.5μg/mL), respectively, had no effect. These findings suggest that activation of MrgC11 may inhibit HVA ICa in mouse DRG neurons through a voltage-independent mechanism that involves activation of the PLC, but not Gαi or Gαs, pathway.
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Affiliation(s)
- Z Li
- The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - S-Q He
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - P-Y Tseng
- The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - Q Xu
- The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - V Tiwari
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - F Yang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - B Shu
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA; Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Wuhan 430030, China
| | - T Zhang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100050, China
| | - Z Tang
- Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu 210023, China
| | - S N Raja
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA
| | - Y Wang
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - X Dong
- The Solomon H. Snyder Department of Neuroscience, Center for Sensory Biology, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA; Howard Hughes Medical Institute, Johns Hopkins University, School of Medicine, Baltimore, MD 21287, USA.
| | - Y Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA.
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28
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Shu B. Analysis of Factors Causing Chronic Obstructive Pulmonary Disease in Eastern Region of China. Value Health 2014; 17:A777. [PMID: 27202877 DOI: 10.1016/j.jval.2014.08.355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- B Shu
- University College London, London, England
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29
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Shu B, Zhang C, Xing D. Segmented continuous-flow multiplex polymerase chain reaction microfluidics for high-throughput and rapid foodborne pathogen detection. Anal Chim Acta 2014; 826:51-60. [DOI: 10.1016/j.aca.2014.04.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/16/2014] [Accepted: 04/08/2014] [Indexed: 01/10/2023]
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30
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Chen L, Shu B, Tang J, Zhao J, Liu J, Xu Y, Qi S. Hypoxic Conditioned Medium of Bone Marrow Derived Mesenchymal Stem Cells Enhances Murine Wound Healing Through Paracrine Signaling. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.1027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Zheng Y, Wang SB, Cao X, Liu DC, Shu B, Quan ZS. Design, synthesis and anticonvulsant activity evaluation of novel 4-(4-substitutedphenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-ones. Drug Res (Stuttg) 2013; 64:40-6. [PMID: 23965799 DOI: 10.1055/s-0033-1351316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A series of novel 4-(4-substitutedphenyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one derivatives were synthesized and screened for their anticonvulsant activities by the maximal electroshock test (MES) and their neurotoxicity was evaluated by the rotarod neurotoxicity test (TOX). In the MES test, compound 4-{4-[(3-fluorobenzyl)oxy]phenyl}-3-methyl-1H-1,2,4-triazol-5(4H)-one (4n) was found to possess better anticonvulsant activity and higher safety than marketed drugs Carbamazepine with an ED50 value of 25.5 mg/kg and protective index (PI) value>48.8. In addition, the potency of compound 4n against seizures induced by Pentylenetetrazole, 3-Mercaptopropionic acid, and Bicuculline suggested its broad spectrum activity, and the mechanisms of action including inhibition of voltage-gated ion channels and modulation of GABAergic activity might involve in its anticonvulsant activity.
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Affiliation(s)
- Y Zheng
- College of Pharmacy, Yanbian University, Jilin, China
| | - S-B Wang
- College of Pharmacy, Yanbian University, Jilin, China
| | - X Cao
- College of Pharmacy, Yanbian University, Jilin, China
| | - D-C Liu
- College of Pharmacy, Yanbian University, Jilin, China
| | - B Shu
- College of Pharmacy, Yanbian University, Jilin, China
| | - Z-S Quan
- College of Pharmacy, Yanbian University, Jilin, China
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32
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Cao X, Deng XQ, Shu B, Wang SB, Quan ZS. Synthesis and anticonvulsant activity evaluation of 4-(2-alkoxy-phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones in various experimental seizure models in mice. Drug Res (Stuttg) 2013; 63:319-25. [PMID: 23539424 DOI: 10.1055/s-0033-1337978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A new series of 4-(2-alkoxy-phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones was synthesized using appropriate synthetic route. Their anticonvulsant activities were evaluated experimentally against maximal electroshock test and their neurotoxicities were evaluated under the rotarod neurotoxicity test with intraperitoneally injected mice. The results showed that all target compounds exhibited anticonvulsant activity in varying degrees against maximal electroshock test. Among them, 4-(2-octyloxy-phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (5 g) was the most promising compound with the median effective dose (ED50) of 23.7 mg/kg, the median toxicity dose (TD50) of 611.0 mg/kg, and the protective index (PI) of 25.8. Compound 5 g showed the higher safety than the standard carbamazepine (PI=6.5). As well as demonstrating the anti-MES efficacy of compound 5 g, its potency against seizures induced by pentylenetetrazole, 3-mercaptopropionic acid, and bicuculline were also established, with the results suggesting that GABA-mediated mechanisms might be involved in its anticonvulsant activity.
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Affiliation(s)
- X Cao
- College of Pharmacy, Yanbian University, Jilin, China
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33
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Killian ML, Swenson SL, Vincent AL, Landgraf JG, Shu B, Lindstrom S, Xu X, Klimov A, Zhang Y, Bowman AS. Simultaneous infection of pigs and people with triple-reassortant swine influenza virus H1N1 at a U.S. county fair. Zoonoses Public Health 2012; 60:196-201. [PMID: 22776714 DOI: 10.1111/j.1863-2378.2012.01508.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Influenza-like illness was noted in people and pigs in attendance at an Ohio county fair in August 2007. The morbidity rate in swine approached 100% within 1-2 days of initial clinical signs being recognized, and approximately two dozen people developed influenza-like illness. Triple-reassortant swine H1N1 influenza viruses were identified in both pigs and people at the fair. The identified viruses (A/Sw/OH/511445/2007, A/Ohio/01/2007, and A/Ohio/02/2007) were similar to H1N1 swine influenza viruses currently found in the U.S. swine population. This case illustrates the possibility of transmission of swine influenza in settings where there is close human/swine interaction.
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Affiliation(s)
- M L Killian
- Diagnostic Virology Laboratory, National Veterinary Services Laboratories, USDA, Animal and Plant Health Inspection Service, Ames, IA 50010, USA
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34
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Shu B. Effects of Yiqi Huayu Decoction on brain-derived neurotrophic factor expression in rats with lumbar nerve root injury. ACTA ACUST UNITED AC 2010; 8:280-6. [DOI: 10.3736/jcim20100314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Qi SH, Xie JL, Pan S, Xu YB, Li TZ, Tang JM, Liu XS, Shu B, Liu P. Effects of asiaticoside on the expression of Smad protein by normal skin fibroblasts and hypertrophic scar fibroblasts. Clin Exp Dermatol 2008; 33:171-5. [DOI: 10.1111/j.1365-2230.2007.02636.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Xu S, He M, Yu H, Cai X, Tan X, Lu B, Shu B. A quantitative method to measure telomerase activity by bioluminescence connected with telomeric repeat amplification protocol. Anal Biochem 2001; 299:188-93. [PMID: 11730342 DOI: 10.1006/abio.2001.5418] [Citation(s) in RCA: 135] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Telomerase is expected to be a new biomarker for cancer diagnosis. The telomeric repeat amplification protocol (TRAP) is a sensitive method to detect telomerase activity. However, TRAP and its modified protocols are not always suitable for measuring telomerase activity of a large number of clinical samples to diagnosis cancer because these methods generally require a time-consuming detection step such as gel electrophoresis. To improve the procedure for mass diagnosis, we applied bioluminescence to replace the detection step. Telomerase activity is measured by evaluating the amount of inorganic pyrophosphate generated in PCR amplification of telomerase elongation product, with use of the sensitive enzymatic luminometric inorganic pyrophosphate detection assay (ELIDA). TRAP connected with ELIDA (TRAP-ELIDA) can quantitatively detect telomerase activity within linearity from 2 to 1000 cell equivalents. The ELIDA signals accorded with results of TRAP-SYBR green staining, and the results of ELIDA were significantly correlated to those of TRAP connected with an enzyme-linked immunosorbent assay (TRAP-ELISA) (r(2) = 0.992, P < 0.001). TRAP-ELIDA is a simple and sensitive method to quantify telomerase activity without time-consuming gel electrophoresis. Because TRAP-ELIDA measures telomerase activity with a luminometer, it could be applied to a large number of clinical samples at the same time.
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Affiliation(s)
- S Xu
- National Laboratory of Biomedical Photonics, Institute of Environmental Medicine, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, People's Republic of China.
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37
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Xu S, Zheng G, Li M, Shu B. [Direct effects of fluoride on activities of bone morphogenetic protein]. Zhonghua Yu Fang Yi Xue Za Zhi 2000; 34:215-7. [PMID: 11860933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To demonstrate the direct effects of fluoride on activities of bone morphogenetic protein (BMP). METHOD A complex sample containing BMP and sodium fluoride was implanted under the abdominal skin of young male Wistar rats. The histological characteristics, and activities of alkaline phosphatase and acid phosphatase of the implanted were examined to study the effects of fluoride on biological activities of BMP. RESULTS More fibroblasts cell were transformed to osteoblasts cell in animals treated by BMP with fluoride than those treated by BMP only. During bone formation induced by BMP, fluoride increased the activities of osteoblasts and accelerate mineralization, while inhibited the activities of osteoclast. CONCLUSION Fluoride can affect biological activities of BMP directly.
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Affiliation(s)
- S Xu
- Institute of Environmental Medicine, Tongji Medical University, Wuhan 430030, China
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38
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Shu B, Zhou Y, Ren S. A new system for rapid measurement of ATP. J Tongji Med Univ 1998; 17:190-2. [PMID: 9812776 DOI: 10.1007/bf02888300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The paper introduces a new type instrument for rapid measuring ATP. The system consists of a micromodule ATP sensor and an instrument for measuring weak light transmitted by optic fiber. The micromodule ATP sensor mainly is composed of enzyme membrane, a probe and a bundle of optic fiber. The instrument measuring weak light consists of photomultiplier, high voltage power, pulse amplifier and counter. The instrument was characterized by simple structure, small size, rapid response time (< 5s), high sensitivity (10(-12) mol/L), stable performance (measuring the same sample for 50 times, CV < 5%), long enzyme storage time (> 3 months).
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Affiliation(s)
- B Shu
- Institute of Environmental Medicine, Tongji Medical University, Wuhan
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39
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Shu B, Dou X, Li Y. [Detection of HGV RNA in sera from patients with fulminant hepatitis in Shenyang]. Zhonghua Liu Xing Bing Xue Za Zhi 1998; 19:168-9. [PMID: 10322739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
HGV RNA was detected by Rt-nested PCR in sera from 49 patients with fulminant hepatitis. The results showed: a) HGV RNA positive rate was 16.3% (8/49) in patients with fulminant hepatitis including 4 subjects with HBV coinfection, 1 subject with HCV coinfection, 2 subjects with HBV and HCV coinfection and 1 subject with HGV infection alone. b) mortality in patients with fulminant hepatitis with HGV infection was 75% (6/8), suggesting that: a) both infection with HGV alone and superinfections of other types of hepatitis virus can result in fulminant hepatitis, b) clinical manifestations of fulminant hepatitis with HGV infection may appear to be more severe and with higher mortality.
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Affiliation(s)
- B Shu
- Department of Infectious Diseases, Second Clinical College, China Medical University, Shenyang
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40
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Yan H, Ke Y, Shu B. [Angiographic observation of immediate effect of electric pulse stimulation at Zhiyang point on coronary artery]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1998; 18:330-2. [PMID: 11477903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVE To evaluate angiographical diameter and pressure changes of coronary artery and heart rate in patients with coronary heart disease (CHD) or suspected CHD immediately after electric pulse stimulation of Zhiyang (Du. 9) point. METHODS Twenty-four patients including 21 males and 3 females with an average age of 48.7 years. Parameters of electric pulse stimulation were as follows: the positive pulse range was 440 V, the negative pulse range was 160 V, the cycle was 8 ms, frequency was 125 Hz, the positive pulse width was 0.8 ms, the negative was 0.4 ms, and the output voltage 9 V. Coronary arteriography was performed by using Judkins technique, and intracoronary pressure with heart rate and any response of patients to the stimulation were recorded pre- and post-stimulation for 90 seconds. The relative diameter of left main coronary artery (LMCA), left anterior descending artery (LAD), left circumflex coronary artery (LCx), and right coronary artery (RCA) before and after the stimulation was measured in the same magnification and their results with recordings of intracoronary pressure and heart rate was analyzed. RESULTS A mild dilation effect was observed in all coronary arteries with an average dilation of 8.3% (6.3%-15%) in LMCA, 7.7% (5%-11.8%) in LAD, 8.5% (6.7%-11.1%) in LCx, and 9.1% (6.1%-13.3%) in RCA. No significant difference was found in the change of the diameter of LMCA, LAD, LCx and RCA before and after the stimulation and between them. No significant change of an intracoronary pressure was shown in three patients, an increase of intracoronary systolic and diastolic pressure by 36% and 13% was identified in one, and a decrease by 21% and 31% in another patient. Heart rate was decreased by 2.3% in those five patients. CONCLUSIONS Electric pulse stimulation of Zhiyang point could immediately produce mild dilation effect on coronary arteries, slight decrease on the heart rate, and different effects was produced in intracoronary pressure.
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Affiliation(s)
- H Yan
- Department of Cardiology, China-Japan Friendship Hospital, Beijing 100029, China
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41
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Xu S, Bao K, Shu B. [Influence of cadmium on cartilage and bone formation induced by bone morphogenetic protein]. Zhonghua Yu Fang Yi Xue Za Zhi 1997; 31:292-4. [PMID: 9812609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
An induced osteogenetic model was established using bone morphogenetic protein (BMP) to study direct effect of cadmium on bone tissue, cartilage and bone formation. Four indicators, i.e. incorporation of 35S and 40Ca, and activities of alkaline phosphatase (ALP), acidic phosphatase (ACP), were used to reflect cartilage and bone formation. Results showed that no obvious effect of cadmium on incorporation of 35S was found, but cadmium could lower incorporation of 40Ca, inhibit activities of ALP and have no obvious effect on activity of ACP in osteogenesis. Therefore, it is concluded that cadmium has no obvious influence on cartilage formation, but has obvious inhibitory effect on endochondral bone formation, and cadmium can inhibit the function of osteoblast and calcium salt deposit.
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Affiliation(s)
- S Xu
- Institute of Environmental Medicine, Tongji Medical University, Wuhan
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42
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Abstract
Theoretical and experimental results are presented for simultaneous multibeam coupling in photorefractive SBN:Ce. Within a single crystal, multiple signals are amplified through a coupling process that employs a single pump. The coupling gain of each signal results from coupling both between the pump and the signal and between different signals. The amount of gain that each signal receives is dependent on the intensity of the incident signal; thus a competition for the gain exists among the various signals.
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Shu B, Tsuchiya S, Yamamoto T, Kiribuchi Y, Kagami H. [Hemorrhoids in children and a therapeutic guide]. Shujutsu 1969; 23:316-320. [PMID: 5802759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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