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Qin L, Yu Q, Huang Y, Zhang L, Yan X, Wu W, Liao F, Zhang J, Cui H, Zhang J, Fan H. A novel fluorescent sensor with an overtone peak reference for highly sensitive detection of mercury (II) ions and hydrogen sulfide: Mechanisms and applications in environmental monitoring and bioanalysis. Anal Chim Acta 2024; 1287:342086. [PMID: 38182341 DOI: 10.1016/j.aca.2023.342086] [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: 10/23/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 01/07/2024]
Abstract
The present study introduces a novel fluorescent sensor with an overtone peak reference designed for the detection of mercury (Ⅱ) ions (Hg2+) and hydrogen sulfide (H2S). The study proposes two novel response mechanisms that hinges on the synergistic effect of cation exchange dissociation (CED) and photo-induced electron transfer (PET). This sensor exhibits a remarkable detection limit of 2.9 nM for Hg2+. Additionally, the sensor reacts with H2S to generate nickel sulfide (NiS) semiconductor nanoparticles, which amplify the fluorescence signal and enable a detection limit of 3.1 nM for H2S. The detection limit for H2S is further improved to 29.1 pM through the surface functionalization of the nanomaterial with pyridine groups (increasing reactivity) and chelation of gold nanoparticles (AuNPs), which enhances the sensor's specificity. This improvement is primarily due to the surface plasmon resonance (SPR) of AuNPs and their affinity for H2S. The single-emission strategy can yield skewed results due to environmental changes, whereas the overtone peak reference strategy enhances result accuracy and reliability by detecting environmental interference through reference emission peaks. In another observation, the low-toxicity dihydropyrene-bipyridine nanorods (TPP-BPY) has been successfully utilized for both endogenous and exogenous H2S detection in vivo using a mouse model. The successful development of TPP-BPY is expected to provide an effective tool for studying the role of H2S in biomedical systems.
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Affiliation(s)
- Longshua Qin
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Qiangqiang Yu
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Yong Huang
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Leichang Zhang
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Xinying Yan
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Wenqi Wu
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Fusheng Liao
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Jie Zhang
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China
| | - Hanfeng Cui
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China.
| | - Jing Zhang
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China.
| | - Hao Fan
- Affiliated Hospital and College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, China.
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Hu H, Cui H, Yin X, Fan Q, Shuai H, Zhang J, Liao F, Xiong W, Jiang H, Fan H, Liu W, Wei G. Dual-mode fluorescence and electrochemiluminescence sensors based on Ru-MOF nanosheets for sensitive detection of apoE genes. J Mater Chem B 2024; 12:701-709. [PMID: 38131524 DOI: 10.1039/d3tb01934a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A fluorescence-electrochemiluminescence (FL-ECL) dual-mode sensor for apoE gene detection has been developed, leveraging the unique properties of ruthenium metal organic framework nanosheets (RuMOFNSs). The system utilizes the quenching effect of the Ru(bpy)32+ ECL signal by ferrocene, leading to the synthesis of a multi-electron electrical signal marker, bisferrocene. By immobilizing the P-DNA on RuMOFNSs, bisferrocene quenches both FL and ECL signals. The addition of T-DNA and the consequent formation of double-stranded DNA enable the ExoIII enzyme to excise the bisferrocene fragment, restoring the signals. The sensor demonstrates wide detection linear ranges (1 fM to 1 nM for FL and 0.01 fM to 10 pM for ECL) and remarkable sensitivity (0.048 fM for FL and 0.016 fM for ECL). The dual-mode design offers enhanced reliability through a self-correction feature, reducing false positives. Compared to single-mode sensors, the dual-mode sensor shows significant advantages. Real-world testing confirms the sensor's capacity for robust detection in actual samples, underscoring its promising application in early disease diagnosis. This innovative approach opens up avenues for multi-signal response sensors, offering significant potential for diagnostic technologies.
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Affiliation(s)
- Huiting Hu
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Hanfeng Cui
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Xia Yin
- JiangXi Province Hospital of Integrated Chinese and Western Medicine, Nan Chang, JiangXi 330004, China
| | - Qiqi Fan
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Hai Shuai
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Jing Zhang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Fusheng Liao
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Wei Xiong
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Hedong Jiang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Hao Fan
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Wenming Liu
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Guobing Wei
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
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Cheng M, Zhang J, Huang T, Qin L, Dong H, Liao F, Fan H. A dual-mode sensor platform with adjustable electrochemiluminescence-fluorescence for selective detection of paraquat pesticide. Food Chem 2024; 430:137030. [PMID: 37523820 DOI: 10.1016/j.foodchem.2023.137030] [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: 04/27/2023] [Revised: 07/03/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
This study presents functionalized metal-organic frameworks nanosheets (RuMOFNSs) with strong electrochemiluminescence (ECL) and fluorescence (FL) properties and a novel signal marker-tetraferrocene. Based on the efficient quenching effect of the tetraferrocene on RuMOFNSs, a "signal switch" ECL-FL dual-mode sensor is constructed for sensitive detection of paraquat (PQ). ECL and FL signals are annihilated after adding paraquat-aptamer DNA (PQ-Apt DNA) labeled with tetraferrocene since it is close to RuMOFNSs. PQ is added, and the strong binding and intermolecular interaction between PQ-Apt DNA and PQ induces spatial separation, with tetraferrocene groups far away from RuMOFNSs. At this point, ECL and FL signals are restored. The change in ECL and FL signals realized the quantitative determination of the PQ solution. In addition, the dual-mode sensor exhibits high sensitivity and specificity with detection limits as low as 0.008 ng/mL and 0.059 ng/mL. The proposed sensor is successfully applied to determine PQ, indicating its great application potential in the food industry.
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Affiliation(s)
- Mengqing Cheng
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China
| | - Jing Zhang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China
| | - Ting Huang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China
| | - Longshua Qin
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China
| | - Huanhuan Dong
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Fusheng Liao
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
| | - Hao Fan
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi 330004, China.
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Qin L, Huang T, Cui H, Cheng M, Wei G, Liao F, Xiong W, Jiang H, Zhang J, Fan H. A fluorescence-electrochemiluminescence dual-mode sensor based on a "switch" system for highly selective and sensitive K-ras gene detection. Biosens Bioelectron 2023; 235:115385. [PMID: 37229843 DOI: 10.1016/j.bios.2023.115385] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/29/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023]
Abstract
Herein, an fluorescence (FL)-electrochemiluminescence (ECL) dual-mode biosensor is constructed based on the dual-signal "turn-on" strategy of functionalized metal-organic frameworks nanosheets (RuMOFNSs)-tetraferrocene for K-ras gene detection, and the mechanism of bursting through front-line orbital theory is explained for the first time. Amino-functionalized tetraferrocene-labeled probe DNA molecules are linked to RuMOFNSs by covalent amide bonds, acting as FL and ECL intensity switches. The target DNA, complementary to the probe DNA, triggers cyclic amplification of the target by nucleic acid exonuclease III (Exo III), repelling tetraferrocene reporter groups away from RuMOFNSs and inhibiting the electron transfer process and photoinduced electron transfer (PET) effect. These phenomena induce a double turn-on of FL and ECL signals with a high signal-to-noise ratio. The developed FL-ECL dual-mode sensing platform provides sensitive detection of the K-ras gene with detection limits of 0.01 fM (the detection range is 1 fM to 1 nM) and 0.003 fM (the detection range is 0.01 fM to 10 pM), respectively. In addition, the proposed dual-mode sensor can be easily extended to detect other disease-related biomarkers by changing the specific target and probe base sequences, depicting potential applications in bioanalysis and early disease diagnosis.
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Affiliation(s)
- Longshua Qin
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Ting Huang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Hanfeng Cui
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Mengqing Cheng
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Guobing Wei
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Fusheng Liao
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Wei Xiong
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Hedong Jiang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China
| | - Jing Zhang
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China.
| | - Hao Fan
- JiangXi University of Chinese Medicine, Nan Chang, JiangXi, 330004, China.
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Liao F, Martinu T, Pilon A, Gelman A. The Effect of Recombinant Human (rh) CC10 Protein Treatment in a Mouse Model of Chronic Lung Allograft Dysfunction (CLAD). J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.073] [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: 04/05/2023] Open
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Xu B, Hu Y, Shu Q, Wang M, Chen Z, Wei W, Wen J, Li R, Liao F, Cheng L, Fan H. A sensitive electrochemical DNA sensor based on reduced graphene oxide modified electrode. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Binxiang Xu
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Yuping Hu
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Qingxia Shu
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Mei Wang
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Zhiyang Chen
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang China
| | - Wei Wei
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Jinmei Wen
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Rui Li
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Fusheng Liao
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Lin Cheng
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
| | - Hao Fan
- Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang China
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Wei G, Zhang W, Cui H, Liao F, Cheng L, Ma G, Fan H, Hong N, Zhang J. Immobilization-free electrochemical DNA sensor based on signal cascade amplification strategy. Biotechnol Appl Biochem 2021; 69:1036-1046. [PMID: 33891320 DOI: 10.1002/bab.2174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/12/2021] [Indexed: 11/09/2022]
Abstract
The development of convenient and efficient strategies without using complex nanomaterials or enzymes for signal amplification is very important for bioanalytical applications. Herein, a novel electrochemical DNA sensor was developed by harnessing the signal amplification efficiency of catalytic hairpin assembly (CHA) and a brand-new signal marker tetraferrocene. The prepared sensor had both ends of the probe H2 labeled with tetraferrocene; both ends have a large number of unhybridized T bases, which cause tetraferrocene to move closer to the electrode surface, generating a high-efficiency amplification signal. In the presence of target DNA, it induced strand exchange reactions promoting the formation of double-stranded DNA and recycling of target DNA. Under optimal conditions, the sensor showed a good linear correlation between the peak currents and logarithm of target DNA concentrations (ranging from 0.1 fM to 0.3125 pM) with a detection limit of 0.06 fM, which is obtained by a triple signal-to-noise ratio. Additionally, the prepared sensor possesses excellent selectivity, reproducibility, and stability, demonstrating efficient and stable DNA detection methodology.
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Affiliation(s)
- Guobing Wei
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Wenxing Zhang
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Hanfeng Cui
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Fusheng Liao
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Lin Cheng
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Guangqiang Ma
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Hao Fan
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Nian Hong
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Jing Zhang
- Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
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Zhang X, Liao F, Wang M, Zhang J, Xu B, Zhang L, Xiong J, Xiong W. Enzyme‐free Recycling Amplification‐based Sensitive Electrochemical Thrombin Aptasensor. ELECTROANAL 2021. [DOI: 10.1002/elan.202060496] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiuxiu Zhang
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
- College of Pharmacy and Medical Technology Hanzhong Vocational and Technical College Hanzhong ShanXi 723002 China
| | - Fusheng Liao
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Mei Wang
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Jie Zhang
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Binxiang Xu
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Ling Zhang
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Jun Xiong
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
| | - Wei Xiong
- The Affiliated Hospital Department of Pharmacy JiangXi University of Traditional Chinese Medicine Nanchang JiangXi 330004 China
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Cui H, Wu W, Xu H, Cao H, Hong N, Cheng L, Liao F, Jiang Y, Ma G, Fan H. A homogeneous strategy of target-triggered catalytic hairpin assembly for thrombin signal amplification. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shu Q, Liao F, Hong N, Cheng L, Lin Y, Cui H, Su J, Ma G, Wei G, Zhong Y, Xiong J, Fan H. A novel DNA sensor of homogeneous electrochemical signal amplification strategy. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Ning T, Liao F, Cui H, Yin Z, Ma G, Cheng L, Hong N, Xiong J, Fan H. A homogeneous electrochemical DNA sensor on the basis of a self-assembled thiol layer on a gold support and by using tetraferrocene for signal amplification. Mikrochim Acta 2020; 187:340. [PMID: 32440708 DOI: 10.1007/s00604-020-04274-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 04/11/2020] [Indexed: 11/29/2022]
Abstract
An unmodified electrochemical biosensor has been constructed, which can directly detect DNA in homogeneous solution. The synthesized new compound tetraferrocene was used for signal amplification. The dual-hairpin probe DNA was tagged with a tetraferrocene at the 3' terminal and a thiol at the 5' terminal. Without being hybridized with target DNA, the loop of probe prevented the thiol from contacting the exposed gold electrode surface with an applied potential. After hybridization with the target DNA, the loop-stem structure of the probe was opened, which led to the formation of the hairpin DNA structure. Afterwards, the thiol easily contacted the electrode and accomplished potential-assisted Au-S self-assembly. Its current signal depends on the concentration of target DNA in the 1.8 × 10-13 to 1.8 × 10-9 M concentration range, and the detection limit is 0.14 pM. The technique is a meaningful study because of its high selectivity and sensitivity. Graphical abstract Schematic diagram of the electrochemical DNA sensor operation. Target DNA and probe DNA hybridization, resulting in the disappearance of the steric hindrance of the probe stem ring. A higher signal was generated when tetraferrocene reached the electrode. The electrochemical signals were determined by differential voltammetric pulses (DPV).
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Affiliation(s)
- Tianjiao Ning
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Fusheng Liao
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Hanfeng Cui
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Zhaojiang Yin
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Guangqiang Ma
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Lin Cheng
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Nian Hong
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China
| | - Jun Xiong
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China.
| | - Hao Fan
- Department of Pharmacy, The Affiliated Hospital, Jiangxi University of Traditional Chinese Medicine, Nanchang, 330004, Jiangxi, China.
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Yin Z, Cui H, Shu Q, Jin C, Lin Y, Su J, Huang H, Liao F, Ma G, Hong N, Jiang Y, Fan H. Multi-signal amplification electrochemical DNA biosensor based on exonuclease III and tetraferrocene. J Mater Chem B 2020; 8:4143-4150. [PMID: 32270173 DOI: 10.1039/d0tb00204f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Homogeneous electrochemical DNA biosensors' unique qualities have been of great interest to researchers, mainly due to their high recognition efficiency in solutions. However, the processes of introducing additional markers and extra operations to obtain a signal are tedious and time consuming, which limits their overall potential applications. Herein, a novel tetraferrocene was synthesized and used as a homogeneous electrochemical DNA biosensor probe label. It contains four ferrocene units, which provide greater signaling potential compared to monoferrocene. Furthermore, the target DNA triggers the digestion of the double hairpin DNA probe with the aid of exonuclease III, promoting short single stranded DNA probe formation. With the combination of the incorporated tetraferrocene labeled short DNA probe strands and graphene's ability to adsorb single stranded DNA, the hybridization process can produce an electrode signal provided by tetraferrocene. A low detection limit of 8.2 fM toward target DNA with excellent selectivity was achieved. The proposed sensing system avoids tedious and time-consuming steps of DNA modification, making the experimental processes simpler and convenient. The advantages of high sensitivity, selectivity and simple operation make this strategy applicable to DNA detection.
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Affiliation(s)
- Zhaojiang Yin
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Hanfeng Cui
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Qingxia Shu
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Chen Jin
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Yan Lin
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Jia Su
- South University of Science and Technology of China, Shenzhen 518055, China
| | - HuiLian Huang
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Fusheng Liao
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Guangqiang Ma
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Nian Hong
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Yunfeng Jiang
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
| | - Hao Fan
- The Affiliated Hospital, Department of Pharmacy, JiangXi University of Traditional Chinese Medicine, JiangXi 330004, China.
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Xu H, Cui H, Yin Z, Wei G, Liao F, Shu Q, Ma G, Cheng L, Hong N, Xiong J, Fan H. Highly sensitive host-guest mode homogenous electrochemical thrombin signal amplification aptasensor based on tetraferrocene label. Bioelectrochemistry 2020; 134:107522. [PMID: 32278295 DOI: 10.1016/j.bioelechem.2020.107522] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 02/07/2023]
Abstract
The development of sensitive and convenient detection methods to monitor thrombin without the use of enzymes or complex nanomaterials is highly desirable for the diagnosis of cardiovascular diseases. In this article, tetraferrocene was first synthesized and then a sensitive and homogeneous electrochemical aptasensor was developed for thrombin detection based on host-guest recognition between tetraferrocene and β-cyclodextrin (β-CD). In the absence of thrombin, the double stem-loop of thrombin aptamer (TBA) prevented tetraferrocenes labeled at both ends from entering the cavity of β-CD deposited on gold electrode surface. After binding with thrombin, the stem-loop structure of TBA opened and transformed into special G-quarter structure, forcing tetraferrocene into the cavity of β-CD. As a result, thrombin allowed eight ferrocene molecules to reach the gold electrode surface, greatly amplifying the response signal. The obtained aptasensors showed dynamic detection range from 4 pM to 12.5 nM with detection limit around 1.2 pM. Overall, the results indicate that the proposed aptasensors are promising for future rapid clinical detection of thrombin and development of signal amplification strategies for detection of various proteins.
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Affiliation(s)
- Huihui Xu
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Hanfeng Cui
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Zhaojiang Yin
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Guobing Wei
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Fusheng Liao
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Qingxia Shu
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Guangqiang Ma
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Lin Cheng
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Nian Hong
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China
| | - Jun Xiong
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China.
| | - Hao Fan
- The Affiliated Hospital, Department of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, China.
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Zhang S, Zhou X, Zhou X, Zhang Y, Deng Y, Liao F, Yang M, Xia X, Zhou Y, Yin D, Ojaswi P, Hou Q, Wang L, Zhang D, Xia D, Deng Y, Ding L, Liu H, Yan W, Li M, Ma W, Ma J, Yu Q, Liu B, Yang L, Zhang W, Shu Y, Xu H, Li W. Subtype‐specific inherited predisposition to pemphigus in the Chinese population. Br J Dermatol 2018; 180:828-835. [PMID: 30230522 DOI: 10.1111/bjd.17191] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2018] [Indexed: 02/06/2023]
Affiliation(s)
- S.Y. Zhang
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - X.Y. Zhou
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - X.L. Zhou
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - Y. Zhang
- Department of Thoracic Oncology Cancer Center State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu Sichuan China
| | - Y. Deng
- National Office for Maternal and Child Health Surveillance of China Department of Pediatrics West China Second University Hospital Sichuan University Chengdu Sichuan China
| | - F. Liao
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - M. Yang
- Department of Pathology West China Hospital Sichuan University Chengdu Sichuan China
| | - X.Y. Xia
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - Y.H. Zhou
- Department of Laboratory Medicine Research Center of Clinical Laboratory Medicine West China Hospital Sichuan University Chengdu Sichuan China
| | - D.D. Yin
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - P. Ojaswi
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - Q.Q. Hou
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - L. Wang
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - D.Y. Zhang
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - D.M. Xia
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - Y.Q. Deng
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - L. Ding
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - H.J. Liu
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - W. Yan
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - M.M. Li
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - W.T. Ma
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - J.J. Ma
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - Q. Yu
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
| | - B. Liu
- State Key Laboratory of Biotherapy West China Hospital Sichuan University and Collaborative Innovation Center Chengdu Sichuan China
| | - L. Yang
- State Key Laboratory of Biotherapy West China Hospital Sichuan University and Collaborative Innovation Center Chengdu Sichuan China
| | - W. Zhang
- Department of Clinical Pharmacology Hunan Key Laboratory of Pharmacogenetics Xiangya Hospital Central South University Changsha China
| | - Y. Shu
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
| | - H. Xu
- Precision Medicine Center State Key Laboratory of Biotherapy Precision Medicine Key Laboratory of Sichuan Province West China Hospital Sichuan University and Collaborative Innovation Center No. 17, Section 3, South Renmin Road Chengdu Sichuan China 610041
- Department of Laboratory Medicine Research Center of Clinical Laboratory Medicine West China Hospital Sichuan University Chengdu Sichuan China
| | - W. Li
- Department of Dermatovenereology Rare Disease Center West China Hospital Sichuan University No. 37 Guo Xue Xiang Street Chengdu Sichuan China 610041
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15
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Liao F, Tsai W, Ho C, Chen J, Lin C. 0480 Rapid Eye Movement Period Apnea Contribute to Peripheral Arterial Stiffness in Obstructive Sleep Apnea Syndrome. Sleep 2018. [DOI: 10.1093/sleep/zsy061.479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- F Liao
- Sleep Medicine Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, TAIWAN
| | - W Tsai
- Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, TAIWAN
| | - C Ho
- Department of Adapted Physical Education, National Taiwan Sport University., Taoyuan, TAIWAN
| | - J Chen
- Division of Cardiology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, TAIWAN
| | - C Lin
- Department of Otolaryngology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, TAIWAN
- Sleep Medicine Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, TAIWAN
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16
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Pu J, Hu X, Liao J, Li YW, Qin JL, Xie YL, Zhan CG, Yang XL, Liao F. Achievement of linear response for competitive bioaffinity assays of ligands: criteria of optimized interaction systems. RSC Adv 2016. [DOI: 10.1039/c6ra06426d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
For a linear response, an optimized competitive bioaffinity assay of a ligand requiresCRT> 3 ×CPT,CPT> 50 ×KdR, andKdR> 260 ×KdX(CRTandCPTare concentrations of the probe and protein whileKdXandKdRareKdfor the ligand and probe, respectively).
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Affiliation(s)
- J. Pu
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - X. L. Hu
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - J. Liao
- Central Laboratory
- Yongchuan Hospital
- Chongqing Medical University
- Chongqing 402160
- China
| | - Y. W. Li
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - J. L. Qin
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - Y. L. Xie
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - C.-G. Zhan
- Molecular Modeling and Biopharmaceutical Center
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Kentucky
- Lexington
| | - X. L. Yang
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
| | - F. Liao
- Key Laboratory of Clinical Laboratory Diagnosis of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016
- China
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17
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Liao F, Hsu YC, Kuo SH, Yang YC, Chen JP, Hsu PN, Lin CW, Chen LT, Cheng AL, Fann CSJ, Lin JT, Wu MS. Genetic polymorphisms and tissue expression of interleukin-22 associated with risk and therapeutic response of gastric mucosa-associated lymphoid tissue lymphoma. Blood Cancer J 2014; 4:eXX. [PMID: 25303370 PMCID: PMC4220648 DOI: 10.1038/bcj.2014.70] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 08/22/2014] [Accepted: 08/29/2014] [Indexed: 02/07/2023] Open
Abstract
Chronic Helicobacter pylori-stimulated immune reactions determine the pathogenesis of gastric mucosa-associated lymphoid tissue (MALT) lymphoma. We aimed to explore the genetic predisposition to this lymphoma and its clinical implication. A total of 68 patients and 140 unrelated controls were genotyped for 84 single-nucleotide polymorphisms in genes encoding cytokines, chemokines and related receptors that play important roles in T cell-mediated gastrointestinal immunity. Five genotypes in IL-22, namely CC at rs1179246, CC at rs2227485, AA at rs4913428, AA at rs1026788 and TT at rs7314777, were associated with disease susceptibility. The former four genotypes resided in the same linkage disequilibrium block (r(2)=0.99) that conferred an approximately threefold higher risk. In vitro experiments demonstrated that co-culturing peripheral mononuclear cells or CD4(+) T cells with H. pylori stimulated the secretion of interleukin-22 (IL-22), and that IL-22 induced the expression of antimicrobial proteins, RegIIIα and lipocalin-2, in gastric epithelial cells. Furthermore, patients with gastric tissue expressing IL-22 were more likely to respond to H. pylori eradication (14/22 vs 4/19, P<0.006). We conclude that susceptibility of gastric MALT lymphoma is influenced by genetic polymorphisms in IL-22, the product of which is involved in mucosal immunity against H. pylori and associated with tumor response to H. pylori eradication.
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MESH Headings
- CD4-Positive T-Lymphocytes/metabolism
- Cell Line, Tumor
- Female
- Gene Expression Regulation, Neoplastic
- Genetic Predisposition to Disease
- Helicobacter Infections/genetics
- Helicobacter Infections/metabolism
- Helicobacter Infections/therapy
- Helicobacter pylori
- Humans
- Interleukins/biosynthesis
- Interleukins/genetics
- Lymphoma, B-Cell, Marginal Zone/genetics
- Lymphoma, B-Cell, Marginal Zone/metabolism
- Lymphoma, B-Cell, Marginal Zone/microbiology
- Lymphoma, B-Cell, Marginal Zone/therapy
- Male
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Polymorphism, Single Nucleotide
- Stomach Neoplasms/genetics
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/microbiology
- Stomach Neoplasms/therapy
- Interleukin-22
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Affiliation(s)
- F Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Y-C Hsu
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan
- Center for Database Research, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan
| | - S-H Kuo
- Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Y-C Yang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - J-P Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - P-N Hsu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - C-W Lin
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - L-T Chen
- National Institute of Cancer Research, National Health Research Institute, Tainan, Taiwan
| | - A-L Cheng
- Department of Oncology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - C S J Fann
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - J-T Lin
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - M-S Wu
- Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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18
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Li YL, Yang XL, He CX, Hu XL, Pu J, Liu L, Long GB, Liao F. Facile quantitative comparison of specific activities of fusion-tagged enzyme/mutants in cell lysates via prediction of their maximum adsorption by anti-tag antibody immobilized in microplate wells. RSC Adv 2014. [DOI: 10.1039/c4ra03189j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Maximum activities of 6His-tagged enzyme/mutants from lysates adsorbed on immobilized anti-tag antibody were predicted as specific activities for comparison.
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Affiliation(s)
- Y. L. Li
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - X. L. Yang
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - C. X. He
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - X. L. Hu
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - J. Pu
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - L. Liu
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - G. B. Long
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
| | - F. Liao
- Unit for Analytical Probes and Protein Biotechnology
- Key Laboratory of Clinical Laboratory Diagnostics of the Education Ministry
- College of Laboratory Medicine
- Chongqing Medical University
- Chongqing 400016, China
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19
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Nakashima J, Liao F, Sparks JA, Tang Y, Blancaflor EB. The actin cytoskeleton is a suppressor of the endogenous skewing behaviour of Arabidopsis primary roots in microgravity. Plant Biol (Stuttg) 2014; 16 Suppl 1:142-50. [PMID: 23952736 DOI: 10.1111/plb.12062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 05/24/2013] [Indexed: 05/11/2023]
Abstract
Before plants can be effectively utilised as a component of enclosed life-support systems for space exploration, it is important to understand the molecular mechanisms by which they develop in microgravity. Using the Biological Research in Canisters (BRIC) hardware on board the second to the last flight of the Space Shuttle Discovery (STS-131 mission), we studied how microgravity impacts root growth in Arabidopsis thaliana. Ground-based studies showed that the actin cytoskeleton negatively regulates root gravity responses on Earth, leading us to hypothesise that actin might also be an important modulator of root growth behaviour in space. We investigated how microgravity impacted root growth of wild type (ecotype Columbia) and a mutant (act2-3) disrupted in a root-expressed vegetative actin isoform (ACTIN2). Roots of etiolated wild-type and act2-3 seedlings grown in space skewed vigorously toward the left, which was unexpected given the reduced directional cue provided by gravity. The left-handed directional root growth in space was more pronounced in act2-3 mutants than wild type. To quantify differences in root orientation of these two genotypes in space, we developed an algorithm where single root images were converted into binary images using computational edge detection methods. Binary images were processed with Fast Fourier Transformation (FFT), and histogram and entropy were used to determine spectral distribution, such that high entropy values corresponded to roots that deviated more strongly from linear orientation whereas low entropy values represented straight roots. We found that act2-3 roots had a statistically stronger skewing/coiling response than wild-type roots, but such differences were not apparent on Earth. Ultrastructural studies revealed that newly developed cell walls of space-grown act2-3 roots were more severely disrupted compared to space-grown wild type, and ground control wild-type and act2-3 roots. Collectively, our results provide evidence that, like root gravity responses on Earth, endogenous directional growth patterns of roots in microgravity are suppressed by the actin cytoskeleton. Modulation of root growth in space by actin could be facilitated in part through its impact on cell wall architecture.
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Affiliation(s)
- J Nakashima
- Division of Plant Biology, The Samuel Roberts Noble Foundation, Ardmore, OK, USA
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20
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Abstract
The evolution of stress in coagulating blood is described by aMaxwell-like constitutive model. The evolution is essentiallyaffected by conversion of fibrinogen to fibrin monomer, fibrinpolymerization and its crosslinking. The modifying effects of theprocess result from the active constituents of blood plasma,blood cell concentration and intensity of flow. Interrelationof stress evolution and the kinetics of polymerization species these effects in terms of the order of the kinetics ofpolymerization and degree of fibrin polymerization and values of the constitutive coefficients. The results are presented for a normal blood, averaging the effect of blood constituents and blood platelets on coagulation.
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Affiliation(s)
- P Riha
- Institute of Hydrodynamics, Academy of Sciences, Prague, Czech Republic
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21
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Lu MY, Liao F. Interferon-stimulated gene ISG12b2 is localized to the inner mitochondrial membrane and mediates virus-induced cell death. Cell Death Differ 2011; 18:925-36. [PMID: 21151029 PMCID: PMC3131945 DOI: 10.1038/cdd.2010.160] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 10/29/2010] [Accepted: 11/08/2010] [Indexed: 12/11/2022] Open
Abstract
Interferons (IFNs) are crucial for host defence against viruses. Many IFN-stimulated genes (ISGs) induced by viral infection exert antiviral effects. Microarray analysis of gene expression induced in liver tissues of mice on dengue virus (DENV) infection has led to identification of the ISG gene ISG12b2. ISG12b2 is also dramatically induced on DENV infection of Hepa 1-6 cells (mouse hepatoma cell line). Here, we performed biochemical and functional analyses of ISG12b2. We demonstrate that ISG12b2 is an inner mitochondrial membrane (IMM) protein containing a cleavable mitochondrial targeting sequence and multiple transmembrane segments. Overexpression of ISG12b2 in Hepa 1-6 induced release of cytochrome c from mitochondria, disruption of the mitochondrial membrane potential, and activation of caspase-9, caspase-3, and caspase-8. Treatment of ISG12b2-overexpressing Hepa 1-6 with inhibitors of pan-caspase, caspase-9, or caspase-3, but not caspase-8, reduced apoptotic cell death, suggesting that ISG12b2 activates the intrinsic apoptotic pathway. Of particular interest, we further demonstrated that ISG12b2 formed oligomers, and that ISG12b2 was able to mediate apoptosis through both Bax/Bak-dependent and Bax/Bak-independent pathways. Our study demonstrates that the ISG12b2 is a novel IMM protein induced by IFNs and regulates mitochondria-mediated apoptosis during viral infection.
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Affiliation(s)
- M-Y Lu
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei, Taiwan
| | - F Liao
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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22
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Tang X, Pan F, Xia G, Liao F, Ge R, Mei Y, Ye D, Xu S, Xu J. A single-nucleotide polymorphism marker within theFCRL5gene andHLA-B27positive Han Chinese ankylosing spondylitis patients. ACTA ACUST UNITED AC 2009; 74:314-6. [DOI: 10.1111/j.1399-0039.2009.01335.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Guo F, Liao F. Abstract: S5-10 AN IMMUNOSUPPRESSIVE ANIMAL MODEL FOR GENERATING SPECIFIC MONOCLONAL ANTIBODIES TO ANTIGEN EXISTING ON CELL SURFACE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71505-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Zhang Y, Chen X, Zheng X, Zhao J, Sun Y, Zhang X, Ju Y, Shang W, Liao F. Review of water reuse practices and development in China. Water Sci Technol 2007; 55:495-502. [PMID: 17305175 DOI: 10.2166/wst.2007.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The paper reviews existing urban water reuse schemes in north China including existing policies, institutional, technical and financial practices, summarises the data of nine water reclamation plants in six case study cities, highlights key issues and constraints, and presents development trend in water reuse sector. It is based on an intensive study programme financed by the World Bank in 2004/2005.
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Affiliation(s)
- Y Zhang
- Department of Urban Development, Ministry of Construction, No.9 Sanlihe Road, Beijing 100835, China
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25
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Abstract
BACKGROUND Conventional enzyme activities make use of the initial reaction rate at high substrate concentrations. Because this is not always practical, alternative enzyme assays have been sought. METHODS Reaction curve fitting with an integrated rate equation was investigated to assay serum arylesterase (ArE) activity using phenyl acetate (PA) and p-nitrophenol acetate (PNPA) as substrates. At a much lower initial concentration of substrate (S(0)), the simplified integrated rate equation for the ArE reaction was ln(S(0)/S(i))=(V(m)/K(m)+K(d))t(i). Treating S(0) as a parameter, the enzyme activity as V(m)/K(m) was estimated through nonlinear least square fitting to reaction curve, and the multiplication of V(m)/K(m) by K(m) produced V(m). Spontaneous hydrolysis of the substrate with a rate constant, K(d), served as the background for the estimation of V(m)/K(m). RESULTS Substrate concentration at 8% of K(m) was well suited for the estimation of V(m)/K(m). With either substrate, the V(m)/K(m) showed a close relation to the percentage of substrate consumed, and was not affected by common systematic errors. With either substrate, the between-run precision for V(m)/K(m) was 6% (n>7), V(m)/K(m) was proportional to the amount of ArE and closely correlated with its initial rate. The upper limit of linearity by this integrated method was much higher than the initial rate method, while the detection limit was comparable. By using either V(m)/K(m) or the initial rate, there was negligible interference with ArE activity assay from triglycerides, bilirubin, and hemoglobin. CONCLUSIONS These results indicate the feasibility of the integrated method for routine assay of serum enzyme activity.
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Affiliation(s)
- F Liao
- Biochemistry Department, Chongqing University of Medical Science, Chongqing 400016, PR China.
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26
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You Y, Liao F. In vitro-inhibition of shear-induced platelet aggregation by verapamil. Clin Hemorheol Microcirc 2001; 24:161-5. [PMID: 11455055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The purpose of the study was to investigate the effect of verapamil on shear induced platelet aggregation (SIPA). Blood of New Zealand rabbit was collected to prepare platelet-rich-plasma (PRP) by routine centrifugation. A cone-plate shear device was employed to generate shear stress. The verapamil-treated PRP or control PRP were sheared at 37 degrees C for 120 sec. SIPA was determined from counting of free platelet. The inhibition rates of SIPA by verapamil for five doses at three shear levels were calculated accordingly. The concentration of half inhibition (IC50) was 0.03, 0.07 and 0.09 mmol/l for 20, 40 and 52 dyn/cm2, respectively. The regression for IC50 of verapamil and shear stress follows the linear equation: IC50=-0.0071+0.0019tau (r=0.999,P=0.03). The results indicate that calcium antagonist may have the potential for inhibition of SIPA although the current IC50 for rabbit platelet is higher than that of human routine blood concentration of verapamil.
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Affiliation(s)
- Y You
- Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing
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27
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Liao F. Herbs of activating blood circulation to remove blood stasis. Clin Hemorheol Microcirc 2001; 23:127-31. [PMID: 11321431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Drugs with the efficacy of modifying rheological properties of blood, blood vessels and their interactions are denoted by "hemorheologicals". Drugs of anti-hyperviscosemia, anti-coagulants, anti-platelet drugs, anti-thrombotics, vasodilators, endothelial cell protectors and anti-arthrosclerosis should be considered as hemorheologicals due to the actions in keeping blood fluidity and in maintaining normal vascular functions. The studies in hemorheology indicate that a tendency of hyperviscosity, hypercoagulation and being prone to thrombosis is prevalent in the elderly. Hemorheologicals are importance for and aging and life-threatening diseases. Blood stasis syndrome is a common pathological syndrome in the elderly. In traditional Chinese medicine, the treatment for the syndrome is by herbs which activates blood circulation to remove blood stasis. The herbs have the efficacy of improving hemorheological events. Therefore, the herbs are the source for developing hemorheologicals. Ligustrazine isolated from Chuangxiong is an example. It showed significant inhibition on shear induced platelet aggregation and on platelet intracellular calcium demonstrated by laser confocal microscope.
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Affiliation(s)
- F Liao
- Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medicine, Beijing.
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28
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Liao F, Fan X, Lü X, Feng P. [The HVR genotypes and their relationship with the resistance of methicillin-resistant staphylococci]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:167-71. [PMID: 12600075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
OBJECTIVE To investigate the HVR-PCR genotype of methicillin-resistant Staphylococci in local hospitals and compare it with the antibiograms, with aview to selecting effective antibacterial agents, moreover, to discuss preliminarily its role in molecular epidemiology. METHODS The minimal inhibitory concentrations(MICs) of 86 MRSA, 10 MRSE(Mc'S. epidemidis), 5 MSSE(Mc'S. epidemidis), 8 MRSH(Mc'S. haemolyticus) and 5 MSSH(Mc'S. haemolyticus) clinical isolates collected from 4 local hospitals were tested by serial two-fold agar dilution method; their DNA were extracted by moved basic lytic method, whose polymerase chain reaction(PCR) products amplified, based on the size of mec-associated hypervariable region(HVR) were analyzed by PAG vertical and agarose gel electrophoresis. RESULTS MRSA, MRSE and MRSH were grouped into 4, 3 and 2 HVR genotypes respectively according to the size of the PCR products. The PCR products amplified from 9 of 10 MRSE isolates were the same as the products amplified from MRSA isolates. MRSA strains in this study were mainly HVR genotypes A and D, which accounted for 52.32% and 39.53%; Genotypes B and C were the most multi-drug resistant, but genotype D was multi-sensitive. The I genotype of MRSE was multi-drug resistant, but its genotype III was multi-drug sensitive. The genotype a of MRSH was more resistant than genotype b. CONCLUSION These results suggest that HVR-PCR genotype method is an easy and fast method for epidemiological investigation of nosocomial infections caused by MRSA, and it is helpful for clinical selection of antibacterial agents. This method can compare the mec determinants of MRSA and Mc'CNSt isolates and hence to search for the origin of the mec determinant.
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Affiliation(s)
- F Liao
- Department of Infectious Diseases, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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29
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Abstract
Antibodies represent a unique class of therapeutics because of their high specificity towards a defined target antigen. Recent clinical success with antibody-based cancer therapeutics has led to an increase in the clinical development of these agents. Antibody therapeutics offer a promising approach for inhibiting new blood vessel formation (angiogenesis), which is associated with a variety of diseases, including cancer. In this review we will focus on angiogenesis-related mechanisms targeted by antibody-based therapeutics, with an emphasis on those studies where pre-clinical in vivo data is available.
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Affiliation(s)
- D J. Hicklin
- ImClone Systems, 180 Varick Street, 10014, New York, NY, USA
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30
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Corada M, Liao F, Lindgren M, Lampugnani MG, Breviario F, Frank R, Muller WA, Hicklin DJ, Bohlen P, Dejana E. Monoclonal antibodies directed to different regions of vascular endothelial cadherin extracellular domain affect adhesion and clustering of the protein and modulate endothelial permeability. Blood 2001; 97:1679-84. [PMID: 11238107 DOI: 10.1182/blood.v97.6.1679] [Citation(s) in RCA: 243] [Impact Index Per Article: 10.6] [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: 11/20/2022] Open
Abstract
Vascular endothelial cadherin (VE-cadherin) is an endothelial cell-specific cadherin that plays an important role in the control of vascular organization. Blocking VE-cadherin antibodies strongly inhibit angiogenesis, and inactivation of VE-cadherin gene causes embryonic lethality due to a lack of correct organization and remodeling of the vasculature. Hence, inhibitors of VE-cadherin adhesive properties may constitute a tool to prevent tumor neovascularization. In this paper, we tested different monoclonal antibodies (mAbs) directed to human VE-cadherin ectodomain for their functional activity. Three mAbs (Cad 5, BV6, BV9) were able to increase paracellular permeability, inhibit VE-cadherin reorganization, and block angiogenesis in vitro. These mAbs could also induce endothelial cell apoptosis in vitro. Two additional mAbs, TEA 1.31 and Hec 1.2, had an intermediate or undetectable activity, respectively, in these assays. Epitope mapping studies show that BV6, BV9, TEA 1.31, and Hec 1.2 bound to a recombinant fragment spanning the extracellular juxtamembrane domains EC3 through EC4. In contrast, Cad 5 bound to the aminoterminal domain EC1. By peptide scanning analysis and competition experiments, we defined the sequences TIDLRY located on EC3 and KVFRVDAETGDVFAI on EC1 as the binding domain of BV6 and Cad 5, respectively. Overall, these results support the concept that VE-cadherin plays a relevant role on human endothelial cell properties. Antibodies directed to the extracellular domains EC1 but also EC3-EC4 affect VE-cadherin adhesion and clustering and alter endothelial cell permeability, apoptosis, and vascular structure formation.
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Affiliation(s)
- M Corada
- Istituto di Ricerche Farmacologiche Mario Negri and Istituto FIRC di Oncologia Molecolare, Milano, Italy
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31
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Qiu Q, Chen S, Meng C, Liao F, Huang X, Li T. [Observation on the changes in nasopharyngeal carcinoma patients' olfactory before and after radiotherapy]. Lin Chuang Er Bi Yan Hou Ke Za Zhi 2001; 15:57-8. [PMID: 12541862] [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: 02/28/2023]
Abstract
OBJECTIVE Detecting nasopharyngeal carcinoma (NPC) patients' olfactory before and after radiotherapy for investigating the infection of radiotherapy on these patients' olfactory. METHOD 100 NPC patients' olfactory were detected before the start of radiotherapy and after the termination of therapy in 3, 6, 12, 24 and 36 months. RESULT Patients' smell acuity decreased sharply 3 months after therapy, but varying degrees of recovery were noted in 6 and 12 months. However their smell acuity became worse in the following time. CONCLUSION NPC patients' smell acuity can be profoundly affected by radiotherapy. And after radiotherapy, their smell acuity will decrease wave-likely and cannot fully recover.
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Affiliation(s)
- Q Qiu
- ENT & Head and Neck Department of Guangdong Provincial People's Hospital, Guangzhou 510080
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32
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Liao F, Li Y, O'Connor W, Zanetta L, Bassi R, Santiago A, Overholser J, Hooper A, Mignatti P, Dejana E, Hicklin DJ, Bohlen P. Monoclonal antibody to vascular endothelial-cadherin is a potent inhibitor of angiogenesis, tumor growth, and metastasis. Cancer Res 2000; 60:6805-10. [PMID: 11156369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Vascular endothelial-cadherin (VE-cad) is an endothelial cell-specific adhesion molecule that is crucial for proper assembly of vascular tubes. Here we show that a monoclonal antibody (BV13) directed to the extracellular region of VE-cad inhibits formation of adherens junctions and capillary-like structures by endothelial cells and blocks angiogenesis in the mouse cornea and in Matrigel plugs in vivo. Systemic administration of BV13 markedly decreases the growth of s.c. Lewis lung or human A431 epidermoid tumors and strongly suppresses the growth of Lewis lung metastases. These data demonstrate that VE-cad is essential for postnatal angiogenesis and thus validate VE-cad as a novel target for antiangiogenesis agents.
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Affiliation(s)
- F Liao
- Department of Immunology, ImClone Systems Incorporated, New York, New York 10014, USA
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33
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Qi R, Liao F, Inoue K, Yatomi Y, Sato K, Ozaki Y. Inhibition by diallyl trisulfide, a garlic component, of intracellular Ca(2+) mobilization without affecting inositol-1,4, 5-trisphosphate (IP(3)) formation in activated platelets. Biochem Pharmacol 2000; 60:1475-83. [PMID: 11020449 DOI: 10.1016/s0006-2952(00)00467-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [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: 10/18/2022]
Abstract
Garlic has been used in herbal medicine for thousands of years. Some reports have shown that garlic has protective effects against atherosclerosis and inhibits platelet function. In this study, we investigated the mechanism by which diallyl trisulfide (DT), a component of garlic, inhibits platelet function. DT inhibited platelet aggregation and Ca(2+) mobilization in a concentration-dependent manner without increasing intracellular cyclic AMP and cyclic GMP. DT also had no inhibitory effects on thromboxane A(2) (TXA(2)) production in cell-free systems. Collagen-related peptide (CRP)-induced Ca(2+) mobilization is regulated by phospholipase C-gamma2 (PLC-gamma2) activation. We evaluated the effect of DT on tyrosine phosphorylation of PLC-gamma2 and the production of inositol-1,4,5-trisphosphate (IP(3)). DT at concentrations that inhibited platelet aggregation and Ca(2+) mobilization had no effects on tyrosine phosphorylation of PLC-gamma2 or on the formation of IP(3) induced by CRP. Similar results were obtained with thrombin-induced platelet activation. DT inhibited platelet aggregation and Ca(2+) mobilization induced by thrombin without affecting the production of IP(3.) We then evaluated the effect of DT on the binding of IP(3) to its receptor. DT at high concentrations partially blocked the binding of IP(3) to its receptor. Taken together, our findings suggest that the agent suppresses Ca(2+) mobilization at a step distal to IP(3) formation. DT may provide a good tool for investigating Ca(2+) mobilization.
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Affiliation(s)
- R Qi
- Department of Clinical and Laboratory Medicine, Yamanashi Medical University, Yamanashi, Japan
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34
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Liao F, Jiao L. Ligustrazine, allicin and shear-induced platelet aggregation. Clin Hemorheol Microcirc 2000; 22:167-8. [PMID: 10831067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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35
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Xiong E, Wu C, Liao F, Xiong S. [Skeletal dysplasia and osteoporosis due to inadequate athletic]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2000; 17:366-8. [PMID: 11285860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Athletic load is an important factor that has an influence on the growth, development and mature of skeleton. In patients who had the functional disorder of hip joint resulting from hip diseases during their teen-ages, skeletal dysplasia and osteoporosis would occur. The present paper reported 30 cases of unilateral hip disorder. The patients were 20 men and 10 women whose age ranged from 2 to 20 years. The course of disease lasted 2 to 49 years. Their primary diseases included suppurant hip arthritis (16 cases), tuberculous arthritis of hip (10 cases), and others (4 cases). The follow-up study revealed fixed hip joint in 18 cases, positive Thomas sign in 22 cases, limited motion of hip joint in 12 cases, and unequal length of lower extremities in 25 cases; at the same time X-ray films showed ankylosis of hip at normal position in 10 patients, dislocation with ankylosis of hip in 13 patients, arthritic disorder of hip in 7 patients, skeletal dysplacia of ischium and pubis in 18 patients, and skeletal dysplasia of femur in 22 patients. All patients had osteoporosis. A discussion about the basic mechanism for skeletal dysplasia and osteoporosis following inadequate athletic load is presented. We believe that the skeletal dysplasia and osteoporosis in our group were caused by the diseases that led to inadequate athletic load. Therefore it is important to provide a thorough treatment and help the patients to their strength to be loaded in time.
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Affiliation(s)
- E Xiong
- First Affiliated Hospital, West China University of Medical Sciences, Chengdu 610041
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36
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Liao F, Ye S, Zhang X. The effect of sheng bai solution on irradiated mice bone marrow cell division index and DNA content. J Tongji Med Univ 2000; 18:197-200. [PMID: 10806844 DOI: 10.1007/bf02886471] [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: 11/24/2022]
Abstract
Before and after general irradiation with 60Co-gamma, mice were orally given Sheng Bai Solution (SBS) for one week. SBS alleviated the irradiation-induced reduction of bone marrow cell chromosome division index. The irradiation-induced decrease of marrow DNA amount, thymic and splenic fractions, and total leukocyte number were restored to some extent. SBS also helped to ameliorate general condition of patients.
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Affiliation(s)
- F Liao
- Department of Microbiology, Tongji Medical University, Wuhan
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37
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Haddad MM, Xu W, Schwahn DJ, Liao F, Medrano EE. Activation of a cAMP pathway and induction of melanogenesis correlate with association of p16(INK4) and p27(KIP1) to CDKs, loss of E2F-binding activity, and premature senescence of human melanocytes. Exp Cell Res 1999; 253:561-72. [PMID: 10585280 DOI: 10.1006/excr.1999.4688] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
There is strong evidence that the senescent phenotype, whether induced by telomere shortening, oxidative damage, or oncogenic stimuli, is an important tumor suppressive mechanism. The melanocyte is a cell of neural crest origin that produces the pigment melanin and can develop into malignant melanomas. To understand how malignant cells escape senescence, it is first crucial to define what genes control senescence in the normal cell. Prolonged exposure to high levels of cAMP results in accumulation of melanin and terminal differentiation of human melanocytes. Here we present evidence that activation of a cAMP pathway correlates with multiple cellular changes in these cells: (1) increased expression of the transcription factor microphthalmia; (2) increased melanogenesis; (3) increased association of the cyclin-dependent kinase inhibitors (CDK-Is) p27(KIP1) and p16(INK4) with CDK2 and CDK4, respectively; (4) failure to phosphorylate the retinoblastoma protein (pRB); (5) decreased expression of E2F1, E2F2, and E2F4 proteins; (6) loss of E2F DNA-binding activity; and (7) phenotypic changes characteristic of senescent cells. Senescent melanocytes have potent E2F inhibitory activity, because extracts from these cells completely abolished E2F DNA-binding activity that was present in extracts from the early proliferative phase. We propose that increased activity of the CDK-Is p27 and p16 and loss of E2F activity in human melanocytes characterize a senescence program activated by the cAMP pathway. Disruption of cAMP-mediated and melanogenesis-induced senescence may cause immortalization of human melanocytes, an early step in the development of melanomas.
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Affiliation(s)
- M M Haddad
- Departments of Cell Biology and Dermatology, Baylor College of Medicine and VAMC, Houston, Texas 77030, USA
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38
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Liao F, Schenkel AR, Muller WA. Transgenic mice expressing different levels of soluble platelet/endothelial cell adhesion molecule-IgG display distinct inflammatory phenotypes. J Immunol 1999; 163:5640-8. [PMID: 10553094] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Platelet/endothelial cell adhesion molecule-1 (PECAM-1, CD31), expressed on the surfaces of leukocytes and concentrated in the junctions between endothelial cells plays an important role in transendothelial migration of neutrophils and monocytes. Soluble recombinant PECAM-IgG injected i.v. into mice blocks acute leukocyte emigration by 80%. To study the role of PECAM in models of chronic inflammation, we generated transgenic mice constitutively expressing soluble full-length murine PECAM as an IgG chimera. Three founder lines expressed this transgene and constitutively secreted murine PECAM-IgG into the plasma where it was maintained at characteristic concentrations for each line. All mice had similar hematologic profiles to wild-type littermates and were healthy when maintained in the standard laboratory animal facility. Both the leukocytes and the endothelium of mice of all transgenic lines expressed the same levels of endogenous PECAM-1 as wild-type littermates. Similarly, there were no detectable differences in the expression of several other common leukocyte and endothelial cell adhesion molecules. Mice that produced moderate (10-20 microg/ml) concentrations of PECAM-IgG demonstrated a severely blunted acute inflammatory response, despite mobilizing appropriate numbers of circulating leukocytes. Surprisingly, mice that constitutively produced high (400-1,000 microg/ml) concentrations of PECAM-IgG were unresponsive to its anti-inflammatory effects. This is the first demonstration that a soluble form of a cell adhesion molecule can be stably expressed and retain efficacy in vivo over prolonged periods. This approach is applicable to many other extracellular molecules. However, the plasma concentrations of such constitutively produced inhibitors may greatly influence the resulting phenotype.
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Affiliation(s)
- F Liao
- Department of Pathology and Division of Vascular Biology, Weill Medical College of Cornell University, New York 10021, USA
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39
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Abstract
The effects of the phenylpropanoid glycosides verbascoside and martynoside from Pedicularis plicata were investigated on muscle contractility in Bufo gastrocnemius muscle electrically stimulated in vitro. The maximum amplitude and maintained time of contraction were mechanically recorded and used as indices of muscle contractility. After 30 min pretreatment of the muscle, verbascoside at 20.0 microM resisted muscle fatigue significantly while martynoside at 80.0 microM improved muscle contractility only slightly. These two glycosides resisted muscle fatigue depending on their antioxidative activities, which is in agreement with the role of reactive oxygen species (ROS) in promoting fatigue in skeletal muscle.
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Affiliation(s)
- F Liao
- Department of Biology, Lanzhou University, Lanzhou 730000, China
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40
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Sullivan SK, McGrath DA, Liao F, Boehme SA, Farber JM, Bacon KB. MIP-3alpha induces human eosinophil migration and activation of the mitogen-activated protein kinases (p42/p44 MAPK). J Leukoc Biol 1999; 66:674-82. [PMID: 10534125 DOI: 10.1002/jlb.66.4.674] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The CC chemokine macrophage inflammatory protein-3alpha (MIP-3alpha) is the product of recent electronic cloning efforts, however, little characterization of its spectrum of biological effects has been undertaken. Human eosinophils exhibited pertussis-toxin-sensitive migration in response to human recombinant (hr)MIP-3alpha. Messenger RNA for the MIP-3alpha receptor, CCR-6, and low levels of surface expression were demonstrated by reverse transcriptase-polymerase chain reaction and FACS analysis. Analyses of cell signaling revealed dose-dependent increases in intracellular calcium mobilization, calcium transients that were, however, greatly reduced when compared with MCP-3-induced responses. Further investigations of MIP-3alpha-induced signal transduction revealed time- and dose-dependent, partially pertussis toxin-dependent, increases in phosphorylation of the p42/p44 mitogen-activated protein kinases (MAPK) that occurred at 10- to 100-fold lower concentrations, and that were linked to a phosphoinositide 3-kinase pathway. These results suggest that MIP-3alpha can regulate multiple, parallel signal transduction pathways in eosinophils, and suggest that MAPK activation by MIP-3alpha in eosinophils is a significant signaling pathway for migration induction.
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Affiliation(s)
- S K Sullivan
- Department of Immunology, Neurocrine Biosciences Inc., San Diego, California 92121, USA
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41
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Gasperini S, Marchi M, Calzetti F, Laudanna C, Vicentini L, Olsen H, Murphy M, Liao F, Farber J, Cassatella MA. Gene expression and production of the monokine induced by IFN-gamma (MIG), IFN-inducible T cell alpha chemoattractant (I-TAC), and IFN-gamma-inducible protein-10 (IP-10) chemokines by human neutrophils. J Immunol 1999; 162:4928-37. [PMID: 10202039] [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: 02/11/2023]
Abstract
Monokine induced by IFN-gamma (MIG), IFN-inducible T cell alpha chemoattractant (I-TAC), and IFN-gamma-inducible protein of 10 kDa (IP-10) are related members of the CXC chemokine subfamily that bind to a common receptor, CXCR3, and that are produced by different cell types in response to IFN-gamma. We have recently reported that human polymorphonuclear neutrophils (PMN) have the capacity to release IP-10. Herein, we show that PMN also have the ability to produce MIG and to express I-TAC mRNA in response to IFN-gamma in combination with either TNF-alpha or LPS. While IFN-gamma, alone or in association with agonists such as fMLP, IL-8, granulocyte (G)-CSF and granulocyte-macrophage (GM)-CSF, failed to influence MIG, IP-10, and I-TAC gene expression, IFN-alpha, in combination with TNF-alpha, LPS, or IL-1beta, resulted in a considerable induction of IP-10 release by neutrophils. Furthermore, IL-10 and IL-4 significantly suppressed the expression of MIG, IP-10, and I-TAC mRNA and the extracellular production of MIG and IP-10 in neutrophils stimulated with IFN-gamma plus either LPS or TNF-alpha. Finally, supernatants harvested from stimulated PMN induced migration and rapid integrin-dependent adhesion of CXCR3-expressing lymphocytes; these activities were significantly reduced by neutralizing anti-MIG and anti-IP-10 Abs, suggesting that they were mediated by MIG and IP-10 present in the supernatants. Since MIG, IP-10, and I-TAC are potent chemoattractants for NK cells and Th1 lymphocytes, the ability of neutrophils to produce these chemokines might contribute not only to the progression and evolution of the inflammatory response, but also to the regulation of the immune response.
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Affiliation(s)
- S Gasperini
- Departments of General Pathology and Pediatric Clinic, University of Verona, Verona, Italy
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42
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Rabin RL, Park MK, Liao F, Swofford R, Stephany D, Farber JM. Chemokine receptor responses on T cells are achieved through regulation of both receptor expression and signaling. J Immunol 1999; 162:3840-50. [PMID: 10201901] [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: 02/11/2023]
Abstract
To address the issues of redundancy and specificity of chemokines and their receptors in lymphocyte biology, we investigated the expression of CC chemokine receptors CCR1, CCR2, CCR3, CCR5, CXCR3, and CXCR4 and responses to their ligands on memory and naive, CD4 and CD8 human T cells, both freshly isolated and after short term activation in vitro. Activation through CD3 for 3 days had the most dramatic effects on the expression of CXCR3, which was up-regulated and functional on all T cell populations including naive CD4 cells. In contrast, the effects of short term activation on expression of other chemokine receptors was modest, and expression of CCR2, CCR3, and CCR5 on CD4 cells was restricted to memory subsets. In general, patterns of chemotaxis in the resting cells and calcium responses in the activated cells corresponded to the patterns of receptor expression among T cell subsets. In contrast, the pattern of calcium signaling among subsets of freshly isolated cells did not show a simple correlation with receptor expression, so the propensity to produce a global rise in the intracellular calcium concentration differed among the various receptors within a given T cell subset and for an individual receptor depending on the cell where it was expressed. Our data suggest that individual chemokine receptors and their ligands function on T cells at different stages of T cell activation/differentiation, with CXCR3 of particular importance on newly activated cells, and demonstrate T cell subset-specific and activation state-specific responses to chemokines that are achieved by regulating receptor signaling as well as receptor expression.
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Affiliation(s)
- R L Rabin
- Laboratory of Clinical Investigation, Flow Cytometry Unit, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA
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43
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Li B, Li L, Zhang L, Cheng T, Li Z, Liao F, Li W. [Effect of bushenjiannao 1 decoction on learning and memory functions and anti-fatigue ability in mice]. Zhongguo Zhong Yao Za Zhi 1999; 24:104-6, 127. [PMID: 12242806] [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: 04/19/2023]
Abstract
OBJECTIVE To observe the anti-dementia effect of Bushenjiannao 1 decoction on mice. METHOD The learning and memory tests were realized with a water maze on the learning and memory impact of mice induced by scopolamine and cycloheximide. The effect of Bushenjiannao 1 decoction on the independent activity and anti-fatigue ability of mice were also investigated. RESULT Bushenjiannao 1 decoction used at a medium dose of 15 g crude drug/kg and a higher dose of 45 g crude drug/kg could significantly improve the learning and memory abilities of mice injected with scopolamine. Higher doses could improve these abilities of mice injected with cycloheximide, and also improve the anti-fatigue ability of mice. No significant differences were observed in the independent activity of mice between the groups. CONCLUSION Bushenjiannao 1 decoction helps improve the learning and memory abilities and enhance the anti-fatigue ability, but has no effect on excitability of the central nervous system.
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Affiliation(s)
- B Li
- Xuanwu Hospital, Beijing Brain Aging Key Laboratory, Beijing 100053
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44
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Liao F, Rabin RL, Smith CS, Sharma G, Nutman TB, Farber JM. CC-chemokine receptor 6 is expressed on diverse memory subsets of T cells and determines responsiveness to macrophage inflammatory protein 3 alpha. J Immunol 1999; 162:186-94. [PMID: 9886385] [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
CC-chemokine receptor (CCR) 6 is the only known receptor for macrophage inflammatory protein (MIP)-3alpha, a CC chemokine chemotactic for lymphocytes and dendritic cells. Using anti-serum that we raised against the N-terminal residues of CCR6, we have characterized the surface expression of CCR6 on peripheral blood leukocytes and we have correlated CCR6 expression with responses to MIP-3alpha. We found that CCR6 was expressed only on memory T cells, including most alpha4beta7 memory cells and cutaneous lymphocyte-associated Ag-expressing cells, and on B cells. Accordingly, chemotaxis of T cells to MIP-3alpha was limited to memory cells. Moreover, calcium signals on T cells in response to MIP-3a were confined to CCR6-expressing cells, consistent with CCR6 being the only MIP-3alpha receptor on peripheral blood T cells. Unlike many CC chemokines, MIP-3alpha produced a calcium signal on freshly isolated T cells, and CCR6 expression was not increased by up to 5 days of treatment with IL-2 or by cross-linking CD3. Despite their surface expression of CCR6, freshly isolated B cells did not respond to MIP-3alpha. In addition to staining peripheral blood leukocytes, our anti-serum detected CCR6 on CD34+ bone marrow cell-derived dendritic cells. Our data are the first to analyze surface expression of CCR6, demonstrating receptor expression on differentiated, resting memory T cells, indicating differences in receptor signaling on T cells and B cells and suggesting that CCR6 and MIP-3alpha may play a role in the physiology of resting memory T cells and in the interactions of memory T cells, B cells, and dendritic cells.
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Affiliation(s)
- F Liao
- Laboratory of Clinical Investigation, National Institute of Allergy and Infectious Diseases, Bethesda, MD 20892, USA
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45
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Horton MR, McKee CM, Bao C, Liao F, Farber JM, Hodge-DuFour J, Puré E, Oliver BL, Wright TM, Noble PW. Hyaluronan fragments synergize with interferon-gamma to induce the C-X-C chemokines mig and interferon-inducible protein-10 in mouse macrophages. J Biol Chem 1998; 273:35088-94. [PMID: 9857043 DOI: 10.1074/jbc.273.52.35088] [Citation(s) in RCA: 134] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Hallmarks of chronic inflammation and tissue fibrosis are increased influx of activated inflammatory cells, mediator release, and increased turnover and production of the extracellular matrix (ECM). Recent evidence has suggested that fragments of the ECM component hyaluronan play a role in chronic inflammation by inducing macrophage expression of chemokines. Interferon-gamma (IFN-gamma), an important regulator of macrophage functions, has been shown to induce the C-X-C chemokines Mig and IP-10. These chemokines affect T-cell recruitment and inhibit angiogenesis. The purpose of this investigation was to determine the effect of hyaluronan (HA) on IFN-gamma-induced Mig and IP-10 expression in mouse macrophages. We found a marked synergy between HA and IFN-gamma on Mig and IP-10 mRNA and protein expression in mouse macrophages. This was most significant with Mig, which was not induced by HA alone. The synergy was specific for HA, was not dependent on new protein synthesis, was not mediated by tumor necrosis factor-alpha, was selective for Mig and IP-10, and occurred at the level of gene transcription. These data suggest that the ECM component HA may influence chronic inflammatory states by working in concert with IFN-gamma to alter macrophage chemokine expression.
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Affiliation(s)
- M R Horton
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
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46
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Peng T, Xue L, Li R, Liao F. [Gastroenteric absorptive kinetic study on strychine in Jiufensan]. Zhong Yao Cai 1998; 21:626-7. [PMID: 12569680] [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: 02/28/2023]
Abstract
After P. O. Jiufensan, the rest curve of strychine in stomach and intestines of mice per kg was determined by TLC scanning. And the gastroenteric absorptive kinetic rule of strychine in rivo was studied, As a result, the strychine in stomach and intestine of mice accorded with pharmacokinetic model of one room. Also the main pharmacokinetic parameters of this preparation were examined.
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Affiliation(s)
- T Peng
- Gangzhou University of Traditional Chinese Medicine, Guangzhou 510407
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47
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Zhang Z, Wei Z, Wang L, Liao F. [Study on the mitoxantrone carboxymethyl starch microspheres for hepatic artery chemoembolization]. Yao Xue Xue Bao 1998; 33:772-7. [PMID: 12016932] [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: 02/25/2023]
Abstract
In this paper, the technology for the preparation of plain carboxymethyl starch microsphere (CMS-MS) was optimized by the uniform design method with CMS-Na as carrier material and p-phthaloyl chloride as acrosslinker. The carboxymethyl starch microsphere loaded mitoxantrone (DHAQ-CMS-MS) was prepared by absorption method. Then, its morphology, size and size distribution, characteristics of drug loading, drug release in vitro, preparation for clinical application and its stability were studied. The pharmacokinetics of DHAQ-CMS-MS in rabbit was also studied. The results showed that the average diameter of the DHAQ-CMS-MS was 75.71 microns, drug loading was 13.21%, expansion ratio in water was 71.94%. The release of DHAQ in vitro from the microspheres was found to fit the model of single exponential function. The suspension prepared in this paper is not only convenient for clinical use, but also favorable for the improvement of the drug stability. The pharmacokinetic parameters obtained from the hepatic atery chemoembolization showed that the DHAQ-CMS-MS group, when compared with the solution group, exhibited a higher blood drug concentration in hepatic vein, its MRT was 1.96 times that of the solution group. As for the result of the peripheral vein, the MRT of the DHAQ-CMS-MS group was 1.95 times that of the solution group. This means that the drug when loaded in microsphere will be concentrated in its targeted site for a longer period, which is favorable for the treatment of hepatic cancer.
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Affiliation(s)
- Z Zhang
- School of Pharmacy, West China University of Medical Sciences, Chengdu 610041
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48
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Kanegane C, Sgadari C, Kanegane H, Teruya-Feldstein J, Yao L, Gupta G, Farber JM, Liao F, Liu L, Tosato G. Contribution of the CXC chemokines IP-10 and Mig to the antitumor effects of IL-12. J Leukoc Biol 1998; 64:384-92. [PMID: 9738666 DOI: 10.1002/jlb.64.3.384] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.5] [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: 11/07/2022] Open
Abstract
The mechanisms by which interleukin-12 (IL-12) exerts antitumor effects have been difficult to dissect. In this study, we examined the potential contribution of the chemokines interferon-gamma-inducible protein-10 (IP-10) and Mig to the antitumor effects of IL-12. Using an athymic mouse model, local inoculations with IL-12 consistently produced tumor size reductions associated with characteristic tumor necrosis and vascular damage. These effects were indistinguishable from those produced by IP-10 or Mig injected locally in the same tumor model. Local and systemic treatment with IL-12 was associated with expression of the interferon-gamma (IFN-gamma), IP-10, and Mig genes and proteins in the tumor. Levels of IP-10 and Mig expression in the tumor, the liver, and the kidney were inversely correlated with tumor size. Administration in vivo of neutralizing antibodies to IP-10 and Mig reduced substantially the antitumor effects of IL-12 inoculated locally into the tumors. These results support the notion that IP-10 and Mig contribute to the antitumor effects of IL-12 through their inhibitory effects on tumor vasculature.
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Affiliation(s)
- C Kanegane
- Center for Biologics Evaluation and Research, Food and Drug Administration, Rockville, MD 20852-1448, USA
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Abstract
BACKGROUND Hypomagnesemia has been hypothesized to play a role in coronary heart disease (CHD), but few prospective epidemiologic studies have been conducted. METHODS AND RESULTS We examined the relation of serum and dietary magnesium with CHD incidence in a sample of middle-aged adults (n=13,922 free of baseline CHD) from 4 US communities. Over 4 to 7 years of follow-up, 223 men and 96 women had CHD develop. After adjustment for sociodemographic characteristics, waist/hip ratio, smoking, alcohol consumption, sports participation, use of diuretics, fibrinogen, total and high-density lipoprotein cholesterol levels, triglyceride levels, and hormone replacement therapy, the relative risk of CHD across quartiles of serum magnesium was 1.00, 0.92, 0.48, and 0.44 (P for trend=0.009) among women and 1.00, 1.32, 0.95, and 0.73 (P for trend=0.07) among men. The adjusted relative risk of CHD for the highest versus the lowest quartile of dietary magnesium was 0.69 in men (95% confidence interval 0.45 to 1.05) and 1.32 in women (0.68 to 2.55). CONCLUSIONS These findings suggest that low magnesium concentration may contribute to the pathogenesis of coronary atherosclerosis or acute thrombosis.
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Affiliation(s)
- F Liao
- Division of Epidemiology, School of Public Health, University of Minnesota, Minneapolis 55454-1015, USA
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50
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Coughlin CM, Salhany KE, Gee MS, LaTemple DC, Kotenko S, Ma X, Gri G, Wysocka M, Kim JE, Liu L, Liao F, Farber JM, Pestka S, Trinchieri G, Lee WM. Tumor cell responses to IFNgamma affect tumorigenicity and response to IL-12 therapy and antiangiogenesis. Immunity 1998; 9:25-34. [PMID: 9697833 DOI: 10.1016/s1074-7613(00)80585-3] [Citation(s) in RCA: 242] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Expression of a dominant negative mutant IFNgammaR1 in murine SCK and K1735 tumor cells rendered them relatively unresponsive to IFNgamma in vitro and more tumorigenic and less responsive to IL-12 therapy in vivo. IL-12 induced histologic evidence of ischemic damage only in IFNgamma-responsive tumors, and in vivo Matrigel vascularization assays revealed that while IFNgamma-responsive and -unresponsive tumor cells induced angiogenesis equally well, IL-12 and its downstream mediator IFNgamma only inhibited angiogenesis induced by the responsive cells. IL-12 induced angiogenesis inhibitory activity in the responsive cells, which may be attributable to production of the chemokine IP-10. Thus, IL-12 and IFNgamma inhibit tumor growth by inducing tumor cells to generate antiangiogenic activity.
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Affiliation(s)
- C M Coughlin
- Biomedical Graduate Program, University of Pennsylvania, Philadelphia 19104, USA
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