Abstract:
BACKGROUND:We have investigated the possibility and feasibility of producing the HPV-11 L1 major capsid protein in transgenic Arabidopsis thaliana ecotype Columbia and Nicotiana tabacum cv. Xanthi as potential sources for an inexpensive subunit vaccine. RESULTS:Transformation of plants was only achieved with the HPV-11 L1 gene with the C-terminal nuclear localization signal (NLS-) encoding region removed, and not with the full-length gene. The HPV-11 L1 NLS- gene was stably integrated and inherited through several generations of transgenic plants. Plant-derived HPV-11 L1 protein was capable of assembling into virus-like particles (VLPs), although resulting particles displayed a pleomorphic phenotype. Neutralising monoclonal antibodies binding both surface-linear and conformation-specific epitopes bound the A. thaliana-derived particles and - to a lesser degree - the N. tabacum-derived particles, suggesting that plant-derived and insect cell-derived VLPs displayed similar antigenic properties. Yields of up to 12 microg/g of HPV-11 L1 NLS- protein were harvested from transgenic A. thaliana plants, and 2 microg/g from N. tabacum plants - a significant increase over previous efforts. Immunization of New Zealand white rabbits with approximately 50 microg of plant-derived HPV-11 L1 NLS- protein induced an antibody response that predominantly recognized insect cell-produced HPV-11 L1 NLS- and not NLS+ VLPs. Evaluation of the same sera concluded that none of them were able to neutralise pseudovirion in vitro. CONCLUSION:We expressed the wild-type HPV-11 L1 NLS- gene in two different plant species and increased yields of HPV-11 L1 protein by between 500 and 1000-fold compared to previous reports. Inoculation of rabbits with extracts from both plant types resulted in a weak immune response, and antisera neither reacted with native HPV-11 L1 VLPs, nor did they neutralise HPV-11 pseudovirion infectivity. This has important and potentially negative implications for the production of HPV-11 vaccines in plants.
journal_name
BMC Biotechnoljournal_title
BMC biotechnologyauthors
Kohl TO,Hitzeroth II,Christensen ND,Rybicki EPdoi
10.1186/1472-6750-7-56subject
Has Abstractpub_date
2007-09-12 00:00:00pages
56issn
1472-6750pii
1472-6750-7-56journal_volume
7pub_type
杂志文章abstract:BACKGROUND:Circular forms of viral genomic DNA are generated during infection of cells with retroviruses like HIV-1. Such circles are unable to replicate and are eventually lost as a result of cell division, lending support to the prevalent notion that episomal retroviral DNA forms are dead-end products of reverse tran...
journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-8-60
更新日期:2008-08-09 00:00:00
abstract:BACKGROUND:In vivo use of monoclonal antibodies has become routine clinical practice in the treatment of human cancer. CD38 is an attractive target, because it has double roles, as a receptor and an ectoenzyme. Daratumumab, an anti-CD38 antibody, is currently in the clinical trials for multiple myeloma. RESULTS:Here w...
journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/s12896-019-0524-8
更新日期:2019-05-22 00:00:00
abstract:BACKGROUND:Heparan sulfate glycosaminoglycans are diverse components of certain proteoglycans and are known to interact with growth factors as a co-receptor necessary to induce signalling and growth factor activity. In this report we characterize heterogeneously glycosylated recombinant human perlecan domain 1 (HSPG2 a...
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更新日期:2010-09-09 00:00:00
abstract:BACKGROUND:Analysis of protein-protein interactions (PPIs) is a valuable approach for the characterization of huge networks of protein complexes or proteins of unknown function. Co-immunoprecipitation (coIP) using affinity resins coupled to protein A/G is the most widely used method for PPI detection. However, this tra...
journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-10-78
更新日期:2010-10-28 00:00:00
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journal_title:BMC biotechnology
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更新日期:2020-02-24 00:00:00
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pub_type: 杂志文章
doi:10.1186/s12896-016-0274-9
更新日期:2016-05-28 00:00:00
abstract:BACKGROUND:Plants may represent excellent alternatives to classical heterologous protein expression systems, especially for the production of biopharmaceuticals and vaccine components. Modern vaccines are becoming increasingly complex, with the incorporation of multiple antigens. Approaches towards developing an HIV va...
journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2007-02-26 00:00:00
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更新日期:2019-12-09 00:00:00
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journal_title:BMC biotechnology
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更新日期:2012-08-23 00:00:00
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更新日期:2017-09-09 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2010-11-30 00:00:00
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pub_type: 杂志文章
doi:10.1186/1472-6750-13-100
更新日期:2013-11-14 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-7-10
更新日期:2007-02-15 00:00:00
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更新日期:2017-11-16 00:00:00
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更新日期:2006-12-06 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2007-11-19 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-13-89
更新日期:2013-10-25 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2016-05-27 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2011-01-14 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-7-52
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journal_title:BMC biotechnology
pub_type: 杂志文章
doi:10.1186/1472-6750-10-36
更新日期:2010-05-06 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2011-06-09 00:00:00
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journal_title:BMC biotechnology
pub_type: 杂志文章
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更新日期:2019-07-17 00:00:00