Abstract:
:An integrated system capable of sample pretreatment using antibody-conjugated magnetic beads and one-step reverse transcriptase-polymerase chain reaction (RT-PCR) on a microfluidic system was developed to accelerate the detection of RNA viruses such as dengue virus or enterovirus 71. The targeted virus in the sample was first captured by the specific antibody-conjugated magnetic beads, which were manipulated by micro-electromagnets made of micro-electro-mechanical systems technology. The RNA of the targeted virus then underwent thermal lysis and was reverse-transcripted to cDNA using a microRT-PCR module. The sensitivity to detect dengue virus is around 10-100 PFU, which is equivalent to the commercial RNA extraction kit and a large-scale RT-PCR machine. This microsystem can specifically detect 4 serotypes of dengue virus, as well as enterovirus 71. The specificity was warranted by both antibody and primer. The microfluidic system allows automatic process of sample including mixing, incubation, and reaction. The antibody-conjugated magnetic beads offer sample pretreatment of purification and concentration. The integration of antibody-conjugated magnetic beads into the microfluidic system is promising for fast molecular diagnosis of microorganisms.
journal_name
Diagn Microbiol Infect Disjournal_title
Diagnostic microbiology and infectious diseaseauthors
Lee WC,Lien KY,Lee GB,Lei HYdoi
10.1016/j.diagmicrobio.2007.07.010subject
Has Abstractpub_date
2008-01-01 00:00:00pages
51-8issue
1eissn
0732-8893issn
1879-0070pii
S0732-8893(07)00331-8journal_volume
60pub_type
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章,评审
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journal_title:Diagnostic microbiology and infectious disease
pub_type: 杂志文章
doi:10.1016/s0732-8893(98)00052-2
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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journal_title:Diagnostic microbiology and infectious disease
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