Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.

Human Papillomavirus (HPV) E7 protein, like E6, is an oncoprotein in high-risk HPV types known to be highly expressed in cervical carcinomas. This is however not established for low-risk HPV infections by HPV6 and 11 that induce cell proliferation giving rise to benign condylomata. In this project,...

Full description

Saved in:
Bibliographic Details
Main Author: Lim, Yin Jia.
Other Authors: School of Biological Sciences
Format: Final Year Project
Language:English
Published: 2010
Subjects:
Online Access:http://hdl.handle.net/10356/41776
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-41776
record_format dspace
spelling sg-ntu-dr.10356-417762023-02-28T18:02:48Z Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples. Lim, Yin Jia. School of Biological Sciences A*STAR Institute of Medical Biology Françoise Thierry DRNTU::Science::Biological sciences::Microbiology::Immunology Human Papillomavirus (HPV) E7 protein, like E6, is an oncoprotein in high-risk HPV types known to be highly expressed in cervical carcinomas. This is however not established for low-risk HPV infections by HPV6 and 11 that induce cell proliferation giving rise to benign condylomata. In this project, polyclonal antibodies were raised against the E7 protein of HPV11 (11E7). Its specificity was tested using Western Blot, Immunofluorescence and Immunohistochemistry. We verified that it could recognise 11E7 and presumably 6E7 due to high sequence homology, but does not cross-react with E7 of high-risk types. The purified antibody was used to detect E7 protein directly in formalin-fixed, paraffin-embedded clinical condyloma samples where its expression was found to be very low, suggesting that low-risk E7 may not represent a sensitive marker for the disease. Interestingly, there is pronounced labeling of E7 in the basal layer of the squamous epithelium adjacent to the condylomata, implying that E7 is expressed in greater amounts in the initial stage of infection (when the cervical histological structure has yet to be disrupted) but down-regulated thereafter. The precise mechanism of condyloma formation remains unknown but we speculate that high levels of E7 may not be required for the maintenance of these benign warts. Bachelor of Science in Biomedical Sciences 2010-08-12T02:26:58Z 2010-08-12T02:26:58Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/41776 en Nanyang Technological University 39 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Biological sciences::Microbiology::Immunology
spellingShingle DRNTU::Science::Biological sciences::Microbiology::Immunology
Lim, Yin Jia.
Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
description Human Papillomavirus (HPV) E7 protein, like E6, is an oncoprotein in high-risk HPV types known to be highly expressed in cervical carcinomas. This is however not established for low-risk HPV infections by HPV6 and 11 that induce cell proliferation giving rise to benign condylomata. In this project, polyclonal antibodies were raised against the E7 protein of HPV11 (11E7). Its specificity was tested using Western Blot, Immunofluorescence and Immunohistochemistry. We verified that it could recognise 11E7 and presumably 6E7 due to high sequence homology, but does not cross-react with E7 of high-risk types. The purified antibody was used to detect E7 protein directly in formalin-fixed, paraffin-embedded clinical condyloma samples where its expression was found to be very low, suggesting that low-risk E7 may not represent a sensitive marker for the disease. Interestingly, there is pronounced labeling of E7 in the basal layer of the squamous epithelium adjacent to the condylomata, implying that E7 is expressed in greater amounts in the initial stage of infection (when the cervical histological structure has yet to be disrupted) but down-regulated thereafter. The precise mechanism of condyloma formation remains unknown but we speculate that high levels of E7 may not be required for the maintenance of these benign warts.
author2 School of Biological Sciences
author_facet School of Biological Sciences
Lim, Yin Jia.
format Final Year Project
author Lim, Yin Jia.
author_sort Lim, Yin Jia.
title Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
title_short Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
title_full Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
title_fullStr Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
title_full_unstemmed Characterisation of antibody raised against the E7 protein of Human papillomavirus type 11 and its application in clinical samples.
title_sort characterisation of antibody raised against the e7 protein of human papillomavirus type 11 and its application in clinical samples.
publishDate 2010
url http://hdl.handle.net/10356/41776
_version_ 1759855237968953344