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Wei Y, Ding S, Chen G, Dong J, Du F, Huang X, Cui X, Chen R, Tang Z. Real-time fluorescence and colorimetric identification of bulbus fritillariae using recombinase assisted loop-mediated isothermal DNA amplification (RALA). FRONTIERS IN PLANT SCIENCE 2022; 13:948879. [PMID: 35968097 PMCID: PMC9366889 DOI: 10.3389/fpls.2022.948879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Bulbus Fritillariae (BF) is a kind of herbal medicine widely used in many countries including China, Japan, Korea, and so on. Among the known BF medicinal materials, Bulbus Fritillariae cirrhosae (BF cirrhosae) was reported to have the best curative effect. Due to the limited resources of BF cirrhosae, a lot of adulterants have emerged in the market, impairing the market order, resource development, and above all, clinical efficacy. Here, a novel nucleic acid amplification technique, Recombinase Assisted Loop-mediated isothermal DNA Amplification (RALA), was used to establish a real-time fluorescence isothermal molecular authentication method for five commonly used BF drugs. Moreover, this RALA-based assay can also be developed as a colorimetric detection method for on-site detection. Both real-time fluorescence and visual methods could detect as low as 0.1% genuine targets in the mixed samples. In summary, we report an isothermal detection system for five kinds of BF circulating in the market, providing a new choice for the molecular identification of BF drugs and showing promise in the laboratory testing as well as field identification of other herbal medicines.
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Affiliation(s)
- Yinghua Wei
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Sheng Ding
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Gangyi Chen
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Juan Dong
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Feng Du
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Xin Huang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Xin Cui
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
| | - Rong Chen
- School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- State Key Laboratory of Southwestern Chinese Medicine Resources, The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhuo Tang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Beijing, China
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Sun Y, Wang G, Jing Z, Liang J, Sui J, Fan J, Li J. Microfluidic Pneumatic Printed Sandwiched Microdroplet Array for High-Throughput Enzymatic Reaction and Screening. SLAS Technol 2020; 25:446-454. [PMID: 32406795 DOI: 10.1177/2472630320908248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
High-throughput enzyme screening for desired functionality is highly demanded. This paper utilizes a newly developed microfluidic pneumatic printing platform for high-throughput enzyme screening applications. The novel printing platform can achieve distinct features including a disposable cartridge, which avoids crosstalk; a flexible cartridge design, allowing for integration of multiple channels; and fast printing speed with submicroliter spot size. Moreover, a polydimethylsiloxane (PDMS)-based sandwich structure has been proposed and used during the printing and imaging, which can lead to better results, including reduced evaporation as well as a uniform light path during imaging. Using this microfluidic pneumatic printed PDMS sandwiched microdroplet array platform, we have demonstrated the capability of high-throughput generation of a combinatorial droplet array with concentration and volume gradients. Furthermore, the potential for enzymatic study has been validated by quantified cellulose reaction implemented with the printing platform.
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Affiliation(s)
- Yang Sun
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Chang Chun, Ji Lin, China.,Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Gang Wang
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Chang Chun, Ji Lin, China.,Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Zhi Jing
- Key Laboratory of Straw Biology and Utilization, The Ministry of Education, College of Life Science, Jilin Agricultural University, Chang Chun, Ji Lin, China
| | - Jingting Liang
- Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Jiajie Sui
- Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Jinzhen Fan
- Department of Biomedical Engineering, University of California, Davis, CA, USA
| | - Jiannan Li
- Department of Biomedical Engineering, University of California, Davis, CA, USA
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Liu M, Ding X, Wang X, Li J, Yang H, Yin Y. Extraction of DNA from complex biological sample matrices using guanidinium ionic liquid modified magnetic nanocomposites. RSC Adv 2019; 9:23119-23128. [PMID: 35514470 PMCID: PMC9067247 DOI: 10.1039/c9ra01505a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/29/2019] [Indexed: 12/19/2022] Open
Abstract
A series of guanidinium ionic liquid modified magnetic chitosan/graphene oxide (GIL-MCGO) nanocomposites have been prepared for DNA extraction via magnetic solid-phase extraction technology. These nanocomposites are of only 20 nanometers in diameter. Single stranded DNA or DNA sodium salts that were absorbed by GIL-MCGO could be quickly collected by an external magnet and extracted. The DNA extraction efficiency of 11 GIL-MCGO nanocomposites was evaluated using NanoDrop. Factors that could impact the DNA extraction process, such as pH, temperature, extraction time, and ionic strength were systematically investigated via single-factor experimental analysis. Under the optimum extraction conditions, a maximum DNA extraction capacity of 233.0 ± 0.4 mg g−1 of GIL-MCGO nanocomposite was achieved. The solid phase extraction method based on GIL-MCGO nanocomposites has been demonstrated with the extraction of DNA from a series of complex sample matrices, including single stranded DNA samples, salmon sperm DNA sodium salt, human whole blood and E. coli cell lysate. The DNA extracted by using the GIL-MCGO nanocomposites are well suitable for PCR amplifications. In addition, an initial study on the interaction between GIL-MCGO and DNA was conducted: the preference of GIL-MCGO on DNA absorption with varying base composition was tested. Only a slight loss in the DNA extraction efficiency of GIL-MCGO was observed after four extraction–desorption cycles, proving excellent regeneration performance and recyclability of the GIL-MCGO nanocomposites in the DNA extraction process. The DNA extracted from biological samples by using the GIL-MCGO nanocomposites are well suitable for PCR amplifications.![]()
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Affiliation(s)
- Mei Liu
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
| | - Xueqin Ding
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
| | - Xuelian Wang
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
| | - Jianzhong Li
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
| | - Huansheng Yang
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
| | - Yulong Yin
- School of Life Sciences
- Hunan Normal University
- Changsha
- China 410081
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