Abstract:
:Cervical cancer is the third highest cause of death in developing countries and most commonly results from high‑risk human papillomavirus (HR‑HPV) infection. Among HR‑HPV genotypes, HPV16 and HPV18 are the most prevalent in cervical cancers. Therefore, the present study aimed to develop a detection assay for HPV16 and HPV18 infection using loop‑mediated isothermal amplification (LAMP) with lateral flow dipstick (LFD) tests. This assay is a simplified, user‑friendly method for the visual detection of HPV genotypes. DNA was extracted from clinical tissue samples, and HPV genotyping was performed using nested polymerase chain reaction (PCR). The clinical samples were demonstrated to include 44 HPV16‑positive, 18 HPV18‑positive and 80 HPV‑negative samples. All DNA samples were also used as templates for a LAMP reaction (30 min at 65˚C), and subsequently, a fluorescein isothiocyanate‑labelled probe was hybridized with the reaction product. Finally, the LFD test was performed. The sensitivity of the LAMP‑LFD test was higher than LAMP‑turbidity, exhibiting up to 100‑fold higher sensitivity for HPV16 and 10‑fold higher sensitivity for HPV18. All HPV16 and HPV18‑positive samples generated positive results in both assays; however, 22 samples detected as HPV‑negative by LAMP‑turbidity exhibited positive results by LAMP‑LFD test (22 of 80 samples). Therefore, these samples were further examined using quantitative (q)PCR. The results demonstrated that 20 out of the 22 samples designated positive by LAMP‑LFD, but negative by LAMP turbidity, gave a positive result with qPCR, while the remaining 2 samples were negative by qPCR. The present results suggested that LAMP‑LFD provided higher sensitivity than LAMP‑turbidity and nested PCR. Thus, the LAMP‑LFD test developed in the present study might be useful for the detection of HPV16 and HPV18 in local hospitals.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Kumvongpin R,Jearanaikoon P,Wilailuckana C,Sae-Ung N,Prasongdee P,Daduang S,Wongsena M,Boonsiri P,Kiatpathomchai W,Swangvaree SS,Sandee A,Daduang Jdoi
10.3892/mmr.2017.6370subject
Has Abstractpub_date
2017-05-01 00:00:00pages
3203-3209issue
5eissn
1791-2997issn
1791-3004journal_volume
15pub_type
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