title: Modular plastic chip for one-shot human papillomavirus diagnostic analysis.
abstract: In this article, we report the design and development of a plastic modular chip suitable for one-shot human papillomavirus (HPV) diagnostics, namely detection of the viral presence and relative genotyping, by two sequential steps performed directly on the same device. The device is composed of two modular and disposable plastic units that can be assembled or used separately. The first module is represented by a polydimethylsiloxane (PDMS) microreactor that is exploited for real-time polymerase chain reaction (PCR) and, thus, is suitable for detecting the presence of virus. The second unit is a PDMS microwell array that allows virus genotyping by a colorimetric assay, based on DNA hybridization technology developed on plastic, requiring simple inspection by the naked eye. The two modules can be easily coupled to reusable hardware, enabling the heating/cooling processes and the real-time detection of HPV. By coupling real-time assay and colorimetric genotyping on the same chip, the assembled device may provide a low-cost tool for HPV diagnostics, thereby favoring the prediction of cancer risk in patients.
authors.affiliation: National Nanotechnology Laboratory of CNR-INFM, University of Salento, Scuola Superiore ISUFI, 73100 Lecce, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Vecchio
authors.forename: S
authors.initials: S
authors.lastname: Sabella
authors.forename: L
authors.initials: L
authors.lastname: Tagliaferro
authors.forename: P
authors.initials: P
authors.lastname: Menegazzi
authors.forename: M P
authors.initials: MP
authors.lastname: Di Bello
authors.forename: V
authors.initials: V
authors.lastname: Brunetti
authors.forename: R
authors.initials: R
authors.lastname: Cingolani
authors.forename: R
authors.initials: R
authors.lastname: Rinaldi
authors.forename: P P
authors.initials: PP
authors.lastname: Pompa
mesh_terms: D003124:Colorimetry / Q000379:methods*; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D005838:Genotype; D006801:Humans; D056656:Lab-On-A-Chip Devices; D020411:Oligonucleotide Array Sequence Analysis; D027383:Papillomaviridae / Q000235:genetics / Q000302:isolation & purification*; D030361:Papillomavirus Infections / Q000175:diagnosis; D016133:Polymerase Chain Reaction / Q000379:methods*
chemical_list: D004129:Dimethylpolysiloxanes; C013830:baysilon