Anti-HPV33 L1 polyclonal antibody (CABT-B8795)


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Application Notes
WB: 1:200-1000
ELISA: 1:200-2000
*Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own experiment using appropriate negative and positive controls.


Alternative Names
HPV; L1; major capsid L1 protein; HPV-33; HPV-33 capsid; HPV33 capsid protein


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Human papillomavirus genotype distribution in invasive cervical cancer in Bosnia and Herzegovina


Authors: Iljazovic, Ermina; Mena, Marisa; Tous, Sara; Alemany, Laia; Omeragic, Feda; Sadikovic, Azra; Clavero, Omar; Vergara, Marleny; Bosch, F. Xavier; de Sanjose, Silvia

Purpose: Countries of the former Yugoslavia bear some of the highest cervical cancer burden in Europe. In Bosnia and Herzegovina (B&H), data on human papillomavirus (HPV) genotype distribution among cervical cancer cases is scarce. This baseline information is critical in order to evaluate the impact of prophylactic HPV vaccines. This study aims to provide specific information for B&H. Methods: The final analysis comprised 283 cases of invasive cervical cancer identified at the Polyclinic for Laboratory Diagnostic, University Clinical Center Tuzla in B&H between 1984 and 2004. HPV was detected through amplification of HPV DNA using SPF-10 broad spectrum primers followed by deoxyribonucleic acid enzyme inmunoassay and genotyping by reverse line probe assay (LiPA(25), version 1). Results: Most cases (92.2%) were histologically classified as squamous cell carcinoma (SCC). A total of 268 cases (94.7%) were positive for HPV. Infections were mainly present as single (95.5%) and HPV16 and 18 accounted for 77.8% of the positive cases. The next most common HPV types were HPV45 (4.4%), HPV33 (3.1%), HPV51 (2.3%) and HPV31 (2.2%). The mean age of cases infected with the seven most common types worldwide (HPV16/18/45/31/33/52/58) was 51.1 (SD = 11.6), six years younger than the one for cases infected with other types (56.3, SD = 12.9). Conclusions: Available HPV vaccines could potentially prevent 77.8% of Bosnian cervical cancer cases (i.e. those associated with HPV16/18). If the reported magnitude of the cross-protection of licensed vaccines for non-vaccine HPV types is long lasting, an additional 6 to 10% of cases could be prevented. (C) 2014 Elsevier Ltd. All rights reserved.

Genome-wide profiling of human papillomavirus DNA integration in liquid-based cytology specimens from a Gabonese female population using HPV capture technology


Authors: Nkili-Meyong, Andriniaina Andy; Moussavou-Boundzanga, Pamela; Labouba, Ingrid; Koumakpayi, Ismael Herve; Jeannot, Emmanuelle; Descorps-Declere, Stephane; Sastre-Garau, Xavier; Leroy, Eric M.; Belembaogo, Ernest; Berthet, Nicolas

Human papillomavirus (HPV) is recognised as the cause of precancerous and cancerous cervical lesions. Furthermore, in high-grade lesions, HPV is frequently integrated in the host cell genome and associated with the partial or complete loss of the E1 and E2 genes, which regulate the activity of viral oncoproteins E6 and E7. In this study, using a double-capture system followed by high-throughput sequencing, we determined the HPV integration status present in liquid-based cervical smears in an urban Gabonese population. The main inclusion criteria were based on cytological grade and the detection of the HPV16 genotype using molecular assays. The rate of HPV integration in the host genome varied with cytological grade: 85.7% (6/7), 71.4% (5/7), 66.7% (2/3) 60% (3/5) and 30.8% (4/13) for carcinomas, HSIL, ASCH, LSIL and ASCUS, respectively. For high cytological grades (carcinomas and HSIL), genotypes HPV16 and 18 represented 92.9% of the samples (13/14). The integrated form of HPV16 genotype was mainly found in high-grade lesions in 71.4% of samples regardless of cytological grade. Minority genotypes (HPV33, 51, 58 and 59) were found in LSIL samples, except HPV59, which was identified in one HSIL sample. Among all the HPV genotypes identified after double capture, 10 genotypes (HPV30, 35, 39, 44, 45, 53, 56, 59, 74 and 82) were detected only in episomal form. Our study revealed that the degree of HPV integration varies with cervical cytological grade. The integration event might be a potential clinical prognostic biomarker for the prediction of the progression of neoplastic lesions.

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