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He X, Xu J, Wang X, Ge C, Li S, Wang L, Xu Y. Enrichment and detection of VEGF 165 in blood samples on a microfluidic chip integrated with multifunctional units. LAB ON A CHIP 2023; 23:2469-2476. [PMID: 37092607 DOI: 10.1039/d3lc00225j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this paper, a multifunctional microfluidic chip integrated with a centrifugal separation zone, aqueous two-phase system (ATPS) mixing zone and enrichment detection zone was proposed and fabricated. An automatic and efficient separation and quantitative analysis method for vascular endothelial growth factor 165 (VEGF165) in whole blood samples was established with the designed microfluidic chip. A blood sample was divided into blood cells and plasma in the centrifugation zone. In the ATPS mixing zone, plasma was mixed with PEG/KH2PO4 aqueous two-phase solution containing Apt-Au NP nanoprobes. In the enrichment detection zone, the mixture was separated on CN140 modified with a ZnO NP-anti VEGF165 nanostructure. The VEGF165 captured by Apt-Au NPs was distributed in the PEG phase, concentrated at the front of CN140 and combined with anti-VEGF165 to form a sandwich structure. The sensitive detection of VEGF165 was achieved through fluorescence resonance energy transfer between rhodamine B and Au NPs on the nanoprobe. Under the optimized rotation program, capillary and centrifugal forces propelled the fluid in the whole process of pretreatment and detection. The detection linear range was between 1 pg mL-1 and 50 ng mL-1, the detection limit of VEGF165 in blood was 0.22 pg mL-1 and the enrichment efficiency was 983. It was illustrated that a convenient and reliable way for detection of tumor markers based on the multifunctional microfluidic chip was provided and it has a potential value for early screening and prognosis of clinical cancer.
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Affiliation(s)
- Xinyu He
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
| | - Junyan Xu
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
| | - Xiaoli Wang
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
| | - Chuang Ge
- Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing, 400030 PR China
| | - Shunbo Li
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
| | - Li Wang
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
| | - Yi Xu
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing, 400044 PR China.
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing, 400044 PR China
- International R & D center of Micro-nano Systems and New Materials Technology, Chongqing University, Shapingba, Chongqing, 400044 PR China
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Wang M, Zheng Z, Zhang Y, Wang G, Liu J, Yu H, Liu A. An ultrasensitive label-free electrochemical impedimetric immunosensor for vascular endothelial growth factor based on specific phage via negative pre-screening. Anal Chim Acta 2022; 1225:340250. [PMID: 36038244 DOI: 10.1016/j.aca.2022.340250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/28/2022] [Accepted: 08/08/2022] [Indexed: 01/25/2023]
Abstract
As a vascular growth regulator, vascular endothelial growth factor (VEGF) exerts significant biological roles through specific binding to its receptors on the vascular endothelial cells. VEGF165 is generally referenced as a potential therapeutic target of many malignant tumors. In this study, a negative pre-screening strategy with structurally analogous members of VEGF121, VEGFC and VEGFD was first proposed for VEGF165 biopanning, aiming at significantly improving the specificity of the selected phage monoclones. Indirect ELISA experiment showed that the phage monoclone expressing peptide SPFLLRM demonstrates excellent affinity and specificity. Then a VEGF165 electrochemical impedimetric spectroscopy (EIS) immunosensor was constructed by above specific phage modified electrode. After optimizing the experimental conditions, the as-explored EIS immunosensor had a linear range of 0.5-1000 pg/mL with the limit of detection of 0.15 pg/mL VEGF165. In addition, the developed phage-based EIS immunosensor was applied to satisfactorily detect VEGF165 in human serum samples. Considering its ultra-sensitivity, good selectivity, batch reproducibility and stability, the screened selective phage-based EIS sensor is envisioned potential application in diagnosis and therapy.
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Affiliation(s)
- Mingyang Wang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Zongmei Zheng
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Yaru Zhang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Ge Wang
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Junchong Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Haipeng Yu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Aihua Liu
- Institute for Chemical Biology & Biosensing, College of Life Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China.
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He X, Wang X, Ge C, Li S, Wang L, Xu Y. Detection of VEGF 165 in Whole Blood by Differential Pulse Voltammetry Based on a Centrifugal Microfluidic Chip. ACS Sens 2022; 7:1019-1026. [PMID: 35362948 DOI: 10.1021/acssensors.1c02641] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
For the rapid and sensitive detection of vascular endothelial growth factor 165 (VEGF165) in clinical blood samples, a microfluidic sensing chip that integrates a centrifugal separation pretreatment unit and a composite nanosensing film was proposed in this paper. An efficient sensing strategy and method was established. The blood sample was first separated and extracted by centrifugal force on the centrifugal microfluidic chip within 5 min after injection. The separated plasma can be automatically transferred through the designed microchannels to the detection area integrated electrodes for subsequent differential pulse voltammetric detection. The Au NPs/MCH/Apt2 sensing film was constructed on the surface of the Au working electrode. A sandwich sensing strategy based on "double aptamers" and "nanoprobe" for VEGF165 detection was established, by which the synthetic Apt1/PThi/Au NP nanoprobe was applied to capture VEGF165 in plasma and bind to the sensing film. By this method, the detection limit of VEGF165 in whole blood was 0.67 pg/mL and the linear range was between 1 pg and 10 ng, which met the needs of clinical VEGF165 detection. It was illustrated that the proposed methodology based on the centrifugal microfluidic chip had potential application prospects in the development of the point-of-care testing fields.
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Affiliation(s)
- Xinyu He
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
| | - Xiaoli Wang
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
| | - Chuang Ge
- Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, Chongqing 400030, PR China
| | - Shunbo Li
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
| | - Li Wang
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
| | - Yi Xu
- Key Disciplines Lab of Novel Micro-Nano Devices and System Technology, Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
- School of Optoelectronic Engineering, Chongqing University, Shapingba, Chongqing 400044, PR China
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Kim J, Shim JS, Han BH, Kim HJ, Park J, Cho IJ, Kang SG, Kang JY, Bong KW, Choi N. Hydrogel-based hybridization chain reaction (HCR) for detection of urinary exosomal miRNAs as a diagnostic tool of prostate cancer. Biosens Bioelectron 2021; 192:113504. [PMID: 34298498 DOI: 10.1016/j.bios.2021.113504] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 12/24/2022]
Abstract
Although urinary exosomal microRNAs (miRNAs) have recently emerged as potential biomarkers, clinical applications are still limited due to their low concentration in small volumes of clinical samples. Therefore, the development of a non-invasive, specific diagnostic tool, along with profiling exosomal miRNA markers from urine, remains a significant challenge. Here, we present hydrogel-based hybridization chain reaction (HCR) for multiplex signal amplification to detect urinary exosomal miRNAs from human clinical samples. We succeeded in identifying small amounts (~amol) of exosomal miRNAs from 600 μL of urine with up to ~35-fold amplification and enhanced detection limits by over an order of magnitude for two miRNA biomarker candidates, hsa-miR-6090 and hsa-miR-3665. Furthermore, we proposed ratiometric analysis without requiring normalization to a reference miRNA and validated the clinical diagnostic potential toward differentiating prostate cancer patients from healthy controls. Our hydrogel-based HCR could serve as a new diagnostic platform for a non-invasive liquid biopsy before burdensome tissue biopsy of various diseases, including prostate cancer screening, complementing the PSA test.
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Affiliation(s)
- Junbeom Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea; Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea
| | - Ji Sung Shim
- Department of Urology, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Bo Hoon Han
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea; School of Mechanical Engineering, Korea University, Seoul, 02841, South Korea
| | - Hye Jin Kim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Jaesung Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea; School of Interdisciplinary Bioscience and Bioengineering. Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea
| | - Il-Joo Cho
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, South Korea; School of Electrical and Electronics Engineering, Yonsei University, Seoul, 03722, South Korea; Yonsei-KIST Convergence Research Institute, Yonsei University, Seoul, 03722, South Korea
| | - Sung Gu Kang
- Department of Urology, Korea University College of Medicine, Seoul, 02841, South Korea
| | - Ji Yoon Kang
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, South Korea
| | - Ki Wan Bong
- Department of Chemical and Biological Engineering, Korea University, Seoul, 02841, South Korea.
| | - Nakwon Choi
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Seoul, 02792, South Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, South Korea.
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Dong J, He L, Wang Y, Yu F, Yu S, Liu L, Wang J, Tian Y, Qu L, Han R, Wang Z, Wu Y. A highly sensitive colorimetric aptasensor for the detection of the vascular endothelial growth factor in human serum. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117622. [PMID: 31606672 DOI: 10.1016/j.saa.2019.117622] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/23/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
Early detection of cancer is of great significance for disease prevention and diagnosis. However, the levels of most cancer markers are quite low in the early stages of disease, so it is urgent to develop a highly sensitive detection method. In this study, a label-free and highly sensitive colorimetric strategy was developed for the detection of the vascular endothelial growth factor165 (VEGF165) in human serum. First, a convenient biosensor was constructed by immobilizing VEGF165 on a microplate, where aptamers bound with VEGF165 to form a complex. Then, streptavidin labeled-horseradish peroxidase (HRP-SA) combined with the complex via the interaction between streptavidin and biotin, thus catalyzing the 3,3',5,5'-tetramethylbenzidine (TMB) and H2O2 system to produce colored products. In the presence of target, immobilized VEGF165 and target competitively bound with the aptamers, resulting in a reduction of the colorimetric signal. Moreover, the optical density (OD) signal decreased with the increase of target concentration. The strategy showed a broad linear range (0.1-100 ng/mL) and a rather low detection limit of 10 pg/mL with good precision and selectivity. Further, the proposed method was successfully applied in detecting VEGF165 in human serum. The detection results of serum samples showed that the proposed assay had a high correlation with CLEIA kits (r = 0.971, P = 0.001). It has potential for application in clinical research and diagnosis.
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Affiliation(s)
- Jiajia Dong
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China; College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Leiliang He
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Yilin Wang
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Fei Yu
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Songcheng Yu
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Lie Liu
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Jia Wang
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Yongmei Tian
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Lingbo Qu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Runping Han
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Ziling Wang
- Henan Provincial Chest Hospital, Zhengzhou, 450001, China.
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China; The Key Laboratory of Nanomedicine and Health Inspection of Zhengzhou, Zhengzhou, 450001, China.
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Liu Z, Luo D, Ren F, Ran F, Chen W, Zhang B, Wang C, Chen H, Wei J, Chen Q. Ultrasensitive fluorescent aptasensor for CRP detection based on the RNase H assisted DNA recycling signal amplification strategy. RSC Adv 2019; 9:11960-11967. [PMID: 35517011 PMCID: PMC9063470 DOI: 10.1039/c9ra01352k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/27/2022] [Accepted: 04/09/2019] [Indexed: 11/21/2022] Open
Abstract
An aptamer-based method for the ultrasensitive fluorescence detection of C-reactive protein (CRP) was developed using the ribonuclease H (RNase H) assisted DNA recycling signal amplification strategy. In this assay, CRP can specifically bind to the aptamer of CRP and the DNA chain of P1 is released from the aptamer/P1 (Ap/P1) complexes. After the addition of the fluorescence labeled (5-FAM) RNA, P1 hybridizes with fluorescence labeled RNA to form a P1/RNA double strand. When RNase H is added, the RNA with fluorescence labeling in the double strand is specifically cut into nucleotide fragments, which cannot be adsorbed on the surface of the GO, so as to generate a fluorescence signal. In the absence of CRP, fluorescence labeled RNA cannot hybridize with P1 to form double strands, which is able to directly adsorb on the surface of GO, resulting in no fluorescence signal. The detection limit is as low as 0.01 ng mL-1, with a linear dynamic range from 50 pg mL-1 to 100 ng mL-1. This sensor is able to detect CRP in spiked human serum, urine and saliva. Thus, it shows a great application prospect in disease diagnosis and prognosis.
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Affiliation(s)
- Zhongzhi Liu
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Dan Luo
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
- College of Pharmacy, Hubei University of Medicine Hubei Shiyan 442008 China
| | - Fangling Ren
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
- College of Pharmacy, Hubei University of Medicine Hubei Shiyan 442008 China
| | - Fengying Ran
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Wei Chen
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Bingqiang Zhang
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Ceming Wang
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Hao Chen
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Jian Wei
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
| | - Qinhua Chen
- Affiliated Dongfeng Hospital, Hubei University of Medicine Hubei Shiyan 442008 China +86 0719 8272283
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine Hubei Shiyan 442008 China
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Sun Y, Wang C, Zhang H, Zhang Y, Zhang G. A Non-Enzymatic and Label-Free Fluorescence Bioassay for Ultrasensitive Detection of PSA. Molecules 2019; 24:E831. [PMID: 30813571 PMCID: PMC6429520 DOI: 10.3390/molecules24050831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/15/2019] [Accepted: 02/19/2019] [Indexed: 01/10/2023] Open
Abstract
The early diagnosis of prostate cancer is very vital for the improvement of patient survival chances. The content of prostate specific antigen (PSA) in serum is closely related to the status of the prostate cancer. We report a fluorescence bioassay, capable of detecting PSA in a non-enzymatic and label-free manner. PSA gives rise to the structural change of a hairpin, consequently triggering the hybridization chain reaction and forming a long-nicked double-helix, which is not adsorbed by graphene oxide. GelRed, as the signal indicator, then binds with dsDNA molecule, thereby producing the fluorescence. The established bioassay has the merits of simple operation, favorable cost-to-benefit ratios, good stability, and specificity. Moreover, the detection limit of this assay is as low as 10 pg/mL, and the linearity range is wide-from 100 pg/mL to 200 ng/mL. At the same time, this bioassay can realize the detection of PSA in biological samples (human serum, saliva, and urine). Therefore, the bioassay provides a potential means for the early diagnosis of prostate cancer.
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Affiliation(s)
- Yujie Sun
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
| | - Chenyun Wang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
| | - Hong Zhang
- Teaching and Research Office of Forensic Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
| | - Yulin Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
| | - Guojun Zhang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, 1 Huangjia Lake West Road, Wuhan 430065, China.
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Krishnan SK, Singh E, Singh P, Meyyappan M, Nalwa HS. A review on graphene-based nanocomposites for electrochemical and fluorescent biosensors. RSC Adv 2019; 9:8778-8881. [PMID: 35517682 PMCID: PMC9062009 DOI: 10.1039/c8ra09577a] [Citation(s) in RCA: 265] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 02/15/2019] [Indexed: 12/16/2022] Open
Abstract
Biosensors with high sensitivity, selectivity and a low limit of detection, reaching nano/picomolar concentrations of biomolecules, are important to the medical sciences and healthcare industry for evaluating physiological and metabolic parameters.
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Affiliation(s)
- Siva Kumar Krishnan
- CONACYT-Instituto de Física
- Benemérita Universidad Autónoma de Puebla
- Puebla 72570
- Mexico
| | - Eric Singh
- Department of Computer Science
- Stanford University
- Stanford
- USA
| | - Pragya Singh
- Department of Electrical Engineering and Computer Science
- National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Meyya Meyyappan
- Center for Nanotechnology
- NASA Ames Research Center
- Moffett Field
- Mountain View
- USA
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