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Wang Q, Zhu L, Yu Y, Guan H, Xu Z. Microbial Screening of Marine Natural Product Inhibitors for the 6′-Aminoglycoside Acetyltransferase 2″-Aminoglycoside Phosphotransferase [AAC(6′)-APH(2″)] Bifunctional Enzyme by Ultra-High Performance Liquid Chromatography–Mass Spectrometry (UHPLC-MS). ANAL LETT 2021. [DOI: 10.1080/00032719.2021.1903025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Qian Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Li Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yi Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Huashi Guan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Zhe Xu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Parekh A, Das D, Das S, Dhara S, Biswas K, Mandal M, Das S. Bioimpedimetric analysis in conjunction with growth dynamics to differentiate aggressiveness of cancer cells. Sci Rep 2018; 8:783. [PMID: 29335481 PMCID: PMC5768811 DOI: 10.1038/s41598-017-18965-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 12/04/2017] [Indexed: 12/19/2022] Open
Abstract
Determination of cancer aggressiveness is mainly assessed in tissues by looking at the grade of cancer. There is a lack of specific method to determine aggressiveness of cancer cells in vitro. In our present work, we have proposed a bio-impedance based non-invasive method to differentiate aggressive property of two breast cancer cell lines. Real-time impedance analysis of MCF-7 (less aggressive) and MDA-MB-231 cells (more aggressive) demonstrated unique growth pattern. Detailed slope-analysis of impedance curves at different growth phases showed that MDA-MB-231 had higher proliferation rate and intrinsic resistance to cell death, when allowed to grow in nutrient and space limiting conditions. This intrinsic nature of death resistance of MDA-MB-231 was due to modulation and elongation of filopodia, which was also observed during scanning electron microscopy. Results were also similar when validated by cell cycle analysis. Additionally, wavelet based analysis was used to demonstrate that MCF-7 had lesser micromotion based cellular activity, when compared with MDA-MB-231. Combined together, we hypothesize that analysis of growth rate, death resistance and cellular energy, through bioimpedance based analysis can be used to determine and compare aggressiveness of multiple cancer cell lines. This further opens avenues for extrapolation of present work to human tumor tissue samples.
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Affiliation(s)
- Aditya Parekh
- School of Medical Science and Technology, IIT Kharagpur, West Bengal, India
| | - Debanjan Das
- Department of Electronics and Communications Engineering, DSPM IIIT, Naya Raipur, India
| | - Subhayan Das
- School of Medical Science and Technology, IIT Kharagpur, West Bengal, India
| | - Santanu Dhara
- School of Medical Science and Technology, IIT Kharagpur, West Bengal, India
| | - Karabi Biswas
- Department of Electrical Engineering, IIT Kharagpur, West Bengal, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, IIT Kharagpur, West Bengal, India.
| | - Soumen Das
- School of Medical Science and Technology, IIT Kharagpur, West Bengal, India.
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Das D, Shiladitya K, Biswas K, Dutta PK, Parekh A, Mandal M, Das S. Wavelet-based multiscale analysis of bioimpedance data measured by electric cell-substrate impedance sensing for classification of cancerous and normal cells. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 92:062702. [PMID: 26764722 DOI: 10.1103/physreve.92.062702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 06/05/2023]
Abstract
The paper presents a study to differentiate normal and cancerous cells using label-free bioimpedance signal measured by electric cell-substrate impedance sensing. The real-time-measured bioimpedance data of human breast cancer cells and human epithelial normal cells employs fluctuations of impedance value due to cellular micromotions resulting from dynamic structural rearrangement of membrane protrusions under nonagitated condition. Here, a wavelet-based multiscale quantitative analysis technique has been applied to analyze the fluctuations in bioimpedance. The study demonstrates a method to classify cancerous and normal cells from the signature of their impedance fluctuations. The fluctuations associated with cellular micromotion are quantified in terms of cellular energy, cellular power dissipation, and cellular moments. The cellular energy and power dissipation are found higher for cancerous cells associated with higher micromotions in cancer cells. The initial study suggests that proposed wavelet-based quantitative technique promises to be an effective method to analyze real-time bioimpedance signal for distinguishing cancer and normal cells.
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Affiliation(s)
- Debanjan Das
- Department of Electrical Engineering, IIT Kharagpur, India
| | | | - Karabi Biswas
- Department of Electrical Engineering, IIT Kharagpur, India
| | | | - Aditya Parekh
- School of Medical Science and Technology, IIT Kharagpur, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, IIT Kharagpur, India
| | - Soumen Das
- School of Medical Science and Technology, IIT Kharagpur, India
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Abdolahad M, Taghinejad M, Taghinejad H, Janmaleki M, Mohajerzadeh S. A vertically aligned carbon nanotube-based impedance sensing biosensor for rapid and high sensitive detection of cancer cells. LAB ON A CHIP 2012; 12:1183-1190. [PMID: 22294045 DOI: 10.1039/c2lc21028b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel vertically aligned carbon nanotube based electrical cell impedance sensing biosensor (CNT-ECIS) was demonstrated for the first time as a more rapid, sensitive and specific device for the detection of cancer cells. This biosensor is based on the fast entrapment of cancer cells on vertically aligned carbon nanotube arrays and leads to mechanical and electrical interactions between CNT tips and entrapped cell membranes, changing the impedance of the biosensor. CNT-ECIS was fabricated through a photolithography process on Ni/SiO(2)/Si layers. Carbon nanotube arrays have been grown on 9 nm thick patterned Ni microelectrodes by DC-PECVD. SW48 colon cancer cells were passed over the surface of CNT covered electrodes to be specifically entrapped on elastic nanotube beams. CNT arrays act as both adhesive and conductive agents and impedance changes occurred as fast as 30 s (for whole entrapment and signaling processes). CNT-ECIS detected the cancer cells with the concentration as low as 4000 cells cm(-2) on its surface and a sensitivity of 1.7 × 10(-3)Ω cm(2). Time and cell efficiency factor (TEF and CEF) parameters were defined which describe the sensor's rapidness and resolution, respectively. TEF and CEF of CNT-ECIS were much higher than other cell based electrical biosensors which are compared in this paper.
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Affiliation(s)
- Mohammad Abdolahad
- Nano-Electronics and Thin Film Laboratory, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
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6
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Asphahani F, Zheng X, Veiseh O, Thein M, Xu J, Ohuchi F, Zhang M. Effects of electrode surface modification with chlorotoxin on patterning single glioma cells. Phys Chem Chem Phys 2011; 13:8953-60. [PMID: 21678586 DOI: 10.1039/c0cp02908d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A microchip patterned with arrays of single cancer cells can be an effective platform for the study of tumor biology, medical diagnostics, and drug screening. However, patterning and retaining viable single cancer cells on defined sites of the microarray can be challenging. In this study we used a tumor cell-specific peptide, chlorotoxin (CTX), to mediate glioma cell adhesion on arrays of gold microelectrodes and investigated the effects of three surface modification schemes for conjugation of CTX to the microelectrodes on single cell patterning, which include physical adsorption, covalent bonding mediated by N-hydroxysuccinimide (NHS), and covalent bonding via crosslinking succinimidyl iodoacetate and Traut's (SIA-Traut) reagents. The CTX immobilization to microelectrodes was confirmed by high-resolution X-ray photoelectron spectroscopy. Physically adsorbed CTX showed better support for cell adhesion and is more effective in confining adhered cells on the electrodes than covalently-bound CTX. Furthermore, cell adhesion and spreading on microelectrodes were quantified in real-time by impedance measurements, which revealed an impedance signal from physically adsorbed CTX electrodes four times greater than the signal from covalently-bound CTX electrodes.
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Affiliation(s)
- Fareid Asphahani
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195, USA
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Wu J, Cropek DM, West AC, Banta S. Development of a Troponin I Biosensor Using a Peptide Obtained through Phage Display. Anal Chem 2010; 82:8235-43. [DOI: 10.1021/ac101657h] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Wu
- Department of Chemical Engineering, Columbia University, New York, New York, and U.S. Army Engineer Research and Development Center, Construction Engineering Research Laboratory (CERL), Champaign, Illinois
| | - Donald M. Cropek
- Department of Chemical Engineering, Columbia University, New York, New York, and U.S. Army Engineer Research and Development Center, Construction Engineering Research Laboratory (CERL), Champaign, Illinois
| | - Alan C. West
- Department of Chemical Engineering, Columbia University, New York, New York, and U.S. Army Engineer Research and Development Center, Construction Engineering Research Laboratory (CERL), Champaign, Illinois
| | - Scott Banta
- Department of Chemical Engineering, Columbia University, New York, New York, and U.S. Army Engineer Research and Development Center, Construction Engineering Research Laboratory (CERL), Champaign, Illinois
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Tarantola M, Marel AK, Sunnick E, Adam H, Wegener J, Janshoff A. Dynamics of human cancer cell lines monitored by electrical and acoustic fluctuation analysis. Integr Biol (Camb) 2010; 2:139-50. [DOI: 10.1039/b920815a] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Curtis TM, Widder MW, Brennan LM, Schwager SJ, van der Schalie WH, Fey J, Salazar N. A portable cell-based impedance sensor for toxicity testing of drinking water. LAB ON A CHIP 2009; 9:2176-83. [PMID: 19606294 DOI: 10.1039/b901314h] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A major limitation to using mammalian cell-based biosensors for field testing of drinking water samples is the difficulty of maintaining cell viability and sterility without an on-site cell culture facility. This paper describes a portable automated bench-top mammalian cell-based toxicity sensor that incorporates enclosed fluidic biochips containing endothelial cells monitored by Electric Cell-substrate Impedance Sensing (ECIS) technology. Long-term maintenance of cells on the biochips is made possible by using a compact, self-contained disposable media delivery system. The toxicity sensor monitors changes in impedance of cell monolayers on the biochips after the introduction of water samples. The fluidic biochip includes an ECIS electronic layer and a polycarbonate channel layer, which together reduce initial impedance disturbances seen in commercially available open well ECIS chips caused by the mechanics of pipetting while maintaining the ability of the cells to respond to toxicants. A curve discrimination program was developed that compares impedance values over time between the control and treatment channels on the fluidic biochip and determines if they are significantly different. Toxicant responses of bovine pulmonary artery endothelial cells grown on fluidic biochips are similar to cells on commercially-available open well chips, and these cells can be maintained in the toxicity sensor device for at least nine days using an automated media delivery system. Longer-term cell storage is possible; bovine lung microvessel endothelial cells survive for up to four months on the fluidic biochips and remain responsive to a model toxicant. This is the first demonstration of a portable bench top system capable of both supporting cell health over extended periods of time and obtaining impedance measurements from endothelial cell monolayers after toxicant exposure.
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Affiliation(s)
- Theresa M Curtis
- Department of Biological Sciences, State University of New York at Cortland, Cortland, New York, USA
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Curtis TM, Tabb J, Romeo L, Schwager SJ, Widder MW, van der Schalie WH. Improved cell sensitivity and longevity in a rapid impedance-based toxicity sensor. J Appl Toxicol 2009; 29:374-80. [DOI: 10.1002/jat.1421] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang L, Wang H, Wang L, Mitchelson K, Yu Z, Cheng J. Analysis of the sensitivity and frequency characteristics of coplanar electrical cell-substrate impedance sensors. Biosens Bioelectron 2008; 24:14-21. [PMID: 18511255 DOI: 10.1016/j.bios.2008.03.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 02/11/2008] [Accepted: 03/07/2008] [Indexed: 10/22/2022]
Abstract
A PDMS-glass based micro-device was designed and fabricated with 12 coplanar impedance sensors integrated for electrical cell-substrate impedance sensing (ECIS). The sensitivity and frequency characteristics of the sensors were investigated both theoretically (equivalent circuit model) and experimentally for the commonly used micro-electrode dimension scale (20-80 microm). The experimental results matched well with the theoretical model analysis and revealed that, within this micro-electrode dimension scale, as the electrode width decreased or as the total electrode length decreased the sensitivity of sensor increased over the whole sensing frequency range, whilst electrode to electrode distance had no influence on sensitivity. Through our frequency characteristics analysis, the whole frequency range could be divided into four parts. New functions describing the dominant components in each frequency range were defined and validated experimentally, and could be used to explain the phenomenon of an ECIS sensing frequency window. The contribution to the impedance measurement of cells growing on the edges of the electrodes was determined for the first time. Finally, novel proposals for ECIS sensor design and ECIS measurements were presented.
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Affiliation(s)
- Lei Wang
- Medical Systems Biology Research Center, Tsinghua University, Beijing, China
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12
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Rapid bioanalysis with chemical sensors: novel strategies for devices and artificial recognition membranes. Anal Bioanal Chem 2008; 391:1629-39. [DOI: 10.1007/s00216-008-1909-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Revised: 01/21/2008] [Accepted: 01/22/2008] [Indexed: 10/22/2022]
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13
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Asphahani F, Thein M, Veiseh O, Edmondson D, Kosai R, Veiseh M, Xu J, Zhang M. Influence of cell adhesion and spreading on impedance characteristics of cell-based sensors. Biosens Bioelectron 2007; 23:1307-13. [PMID: 18221863 DOI: 10.1016/j.bios.2007.11.021] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2007] [Revised: 10/30/2007] [Accepted: 11/26/2007] [Indexed: 11/25/2022]
Abstract
Impedance measurements of cell-based sensors are a primary characterization route for detection and analysis of cellular responses to chemical and biological agents in real time. The detection sensitivity and limitation depend on sensor impedance characteristics and thus on cell patterning techniques. This study introduces a cell patterning approach to bind cells on microarrays of gold electrodes and demonstrates that single-cell patterning can substantially improve impedance characteristics of cell-based sensors. Mouse fibroblast cells (NIH3T3) are immobilized on electrodes through a lysine-arginine-glycine-aspartic acid (KRGD) peptide-mediated natural cell adhesion process. Electrodes are made of three sizes and immobilized with either covalently bound or physically adsorbed KRGD (c-electrodes or p-electrodes). Cells attached to c-electrodes increase the measurable electrical signal strength by 48.4%, 24.2%, and 19.0% for three electrode sizes, respectively, as compared to cells attached to p-electrodes, demonstrating that both the electrode size and surface chemistry play a key role in cell adhesion and spreading and thus the impedance characteristics of cell-based sensors. Single cells patterned on c-electrodes with dimensions comparable to cell size exhibit well-spread cell morphology and substantially outperform cells patterned on electrodes of other configurations.
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Affiliation(s)
- Fareid Asphahani
- Department of Materials Science & Engineering, University of Washington, Seattle, WA 98195-2120, United States
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Lovelady DC, Richmond TC, Maggi AN, Lo CM, Rabson DA. Distinguishing cancerous from noncancerous cells through analysis of electrical noise. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2007; 76:041908. [PMID: 17995027 DOI: 10.1103/physreve.76.041908] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2007] [Indexed: 05/25/2023]
Abstract
Since 1984, electric cell-substrate impedance sensing (ECIS) has been used to monitor cell behavior in tissue culture and has proven sensitive to cell morphological changes and cell motility. We have taken ECIS measurements on several cultures of noncancerous and cancerous human ovarian surface epithelial cells. By analyzing the noise in real and imaginary electrical impedance, we demonstrate that it is possible to distinguish the two cell types purely from the signatures of their electrical noise. Our measures include power-spectral exponents, Hurst and detrended fluctuation analysis, and estimates of correlation time; principal-component analysis combines all the measures. The noise from both cancerous and noncancerous cultures shows correlations on many time scales, but these correlations are stronger for the noncancerous cells.
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Affiliation(s)
- D C Lovelady
- Department of Physics, University of South Florida, Tampa, Florida 33620, USA
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Abstract
Cell-based impedance biosensing is an emerging technology that can be used to non-invasively and instantaneously detect and analyze cell responses to chemical and biological agents. This article highlights the fabrication and measurement technologies of cell impedance sensors, and their application in toxin detection and anti-cancer drug screening. We start with an introduction that describes the capability and advantages of cell-based sensors over conventional sensing technology, followed by a discussion of the influence of cell adhesion, spreading and viability during cell patterning on the subsequent impedance measurements and sensing applications. We then present an electronic circuit that models the cell-electrode system, by which the cellular changes can be detected in terms of impedance changes of the circuit. Finally, we discuss the current status on using cell impedance sensors for toxin detection and anti-cancer drug screening.
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Affiliation(s)
- Fareid Asphahani
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington, 98195-2120
| | - Miqin Zhang
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington, 98195-2120
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Letowski J, Bravo A, Brousseau R, Masson L. Assessment of cry1 gene contents of Bacillus thuringiensis strains by use of DNA microarrays. Appl Environ Microbiol 2005; 71:5391-8. [PMID: 16151129 PMCID: PMC1214684 DOI: 10.1128/aem.71.9.5391-5398.2005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2004] [Accepted: 04/21/2005] [Indexed: 11/20/2022] Open
Abstract
A single Bacillus thuringiensis strain can harbor numerous different insecticidal crystal protein (cry) genes from 46 known classes or primary ranks. The cry1 primary rank is the best known and contains the highest number of cry genes which currently totals over 130. We have designed an oligonucleotide-based DNA microarray (cryArray) to test the feasibility of using microarrays to identify the cry gene content of B. thuringiensis strains. Specific 50-mer oligonucleotide probes representing the cry1 primary and tertiary ranks were designed based on multiple cry gene sequence alignments. To minimize false-positive results, a consentaneous approach was adopted in which multiple probes against a specific gene must unanimously produce positive hybridization signals to confirm the presence of a particular gene. In order to validate the cryArray, several well-characterized B. thuringiensis strains including isolates from a Mexican strain collection were tested. With few exceptions, our probes performed in agreement with known or PCR-validated results. In one case, hybridization of primary- but not tertiary-ranked cry1I probes indicated the presence of a novel cry1I gene. Amplification and partial sequencing of the cry1I gene in strains IB360 and IB429 revealed the presence of a cry1Ia gene variant. Since a single microarray hybridization can replace hundreds of individual PCRs, DNA microarrays should become an excellent tool for the fast screening of new B. thuringiensis isolates presenting interesting insecticidal activity.
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Affiliation(s)
- Jaroslaw Letowski
- Biotechnology Research Institute, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Quebec H4P 2R2, Canada
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