Human papillomavirus (HPV) E6/E7 mRNA has been proposed as a more specific marker for cervical dysplasia and cancer than HPV DNA. This study evaluated the RNA specificity of nucleic acid sequence-based amplification (NASBA)-based HPV detection using HPV DNA plasmids (HPV type 16 [HPV16], HPV18, HPV31, HPV33, and HPV45) and nucleic acid extracts of several cell lines, which were systematically s...

Temperature affects both the stability of nucleic acid detectors and efficiency DNA amplification. In this study, temperature flow inside a detector were simulated results used to design vents for instrument casing. A test platform was constructed collect experimental data that simulation validation. The showed error less than ±3 K. total two heat-dissipation schemes designed based on new casin...

Rapid, sensitive detection methods are of utmost importance for the identification of pathogens related to health and safety. Herein we report the development of a nucleic acid sequence-based lateral flow assay which achieves a low limit of detection using chemiluminescence. On-membrane enzymatic signal amplification is used to reduce the limit of detection to the sub-femtomol level. To demonst...

Mycobacteria are a group of acid-fast, aerobic, slow-growing organisms whose genus includes more than 90 different species. The causative agents of tuberculosis (TB), which is currently considered a global emergency, with more than 2 million people dying every year and 8 million new cases, belong to the Mycobacterium tuberculosis complex (MTB). Moreover, although of lesser public health importa...

chlamydia trachomatis is the most prevalent sexually transmitted bacterial infection, with an estimated annual worldwide incidence of 50 million cases. a large proportion of those infected, particularly women, are asymptomatic, and these individuals serve as a major reservoir of infection. women are also at risk for serious reproductive tract complications with significant morbidity. in an effo...

This presentation will describe a recently developed SlipChip based microfluidic platform to perform digital nucleic acid amplification in a simple and low-cost format. Samples can be introduced into the SlipChip by pipetting without the use of complex instruments, and thousands of nanoliter volume compartments can be generated by simple slipping. A “yes-or-no” digital readout of end-point fluo...

Isothermal nucleic acid amplification is becoming increasingly important for molecular diagnostics. Therefore, new computational tools are needed to facilitate assay design. In the isothermal EXPonential Amplification Reaction (EXPAR), template sequences with similar thermodynamic characteristics perform very differently. To understand what causes this variability, we characterized the performa...

Nucleic acid sequence-based amplification (NASBA) is a sensitive isothermal transcription-based amplification method known to be a suitable tool for RNA research. We demonstrate that NASBA technology can be applied to single nucleotide polymorphism (SNP) analysis using human genomic DNA as a template. Combination of DNA NASBA with multiplex hybridization of specific molecular beacons makes it p...

Sequence Independent Single Primer Amplification is one of the most widely used random amplification approaches in virology for sequencing template preparation. This technique relies on oligonucleotides consisting of a 3' random part used to prime complementary DNA synthesis and a 5' defined tag sequence for subsequent amplification. Recently, this amplification method was combined with next ge...