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hepatitis b/nicotiana
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Expression and characterization of an anti-(hepatitis B surface antigen) glycosylated mouse antibody in transgenic tobacco (Nicotiana tabacum) plants and its use in the immunopurification of its target antigen.
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Transgenic plants expressing recombinant immunoglobulins have arisen as an alternative technology for the large-scale production of antibodies useful in therapeutics and in industrial processes. In the present paper we report the expression in transgenic tobacco ( Nicotiana tabacum ) of an
Detection of Rubisco and mycotoxins as potential contaminants of a plantibody against the hepatitis B surface antigen purified from tobacco.
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Antibodies have been one of the proteins widely expressed in tobacco plants for pharmaceutical purposes, which demand contaminant free preparations. Rubisco constitutes 40-60% of tobacco leaf soluble proteins; therefore it is the major potential protein contaminant of plantibodies, while mycotoxins
Tissue specific expression of hepatitis B virus surface antigen in transgenic plant cells and tissue culture.
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The tobacco plants (Nicotiana tabacum L.) carrying the HBsAg gene controlled by (Aocs)3AmasPmas, the hybrid promoter that includes regulatory elements of the agrobacterial octopine and mannopine synthase genes, as well as plants controlled by the same promoter and
Large-scale purification of an antibody directed against hepatitis B surface antigen from transgenic tobacco plants.
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The application of bioengineering to plants for production of biological products for human and animal use has expanded in recent years. The reasons for this expansion are several and include advances in the technology for novel production systems and the need for very large quantities of
Immunogenicity of the epitope of the foot-and-mouth disease virus fused with a hepatitis B core protein as expressed in transgenic tobacco.
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A novel plant-based vaccine protecting against foot-and-mouth disease (FMD) was developed by inserting the VP21 epitope into the internal region of the hepatitis B virus core antigen gene (HBcAg). The specific sequence of the VP21 epitope is located within the VP1 capsid protein of the FMD virus
Application of the human hepatitis B virus core antigen from transgenic tobacco plants for serological diagnosis.
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OBJECTIVE
The aim was to produce HBcAg from plants more cheaply than can be done by other currently available means, and to apply such antigen to immunoassay procedures for pretransfusion testing of donor blood.
METHODS
Transgenic Nicotiana tabacum cv. SR-1 plants expressing the human hepatitis B
Expression of a single-chain Fv antibody fragment specific for the hepatitis B surface antigen in transgenic tobacco plants.
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An anti-Hepatitis B virus surface antigen (HBsAg) single chain Fv (scFv) antibody fragment was expressed in Nicotiana tabacum transgenic plants. The 6-histidine tagged scFv was targeted to either the cytosol, apoplast, and vacuole, or for retention in the endoplasmic reticulum. Expression of active
Construction of bicistronic cassette for co-expressing hepatitis B surface antigen and mouse granulocyte-macrophage colony stimulating factor as adjuvant in tobacco plant.
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Context: The co-delivery of adjuvant and antigen has shown to be more effective for targeting the immune response than antigen alone. Therefore, designing an efficient bicistronic system is more assuring for production of both elements in the same tobacco cells as a plant model system.
Parenteral-Oral Immunization with Plant-Derived HBcAg as a Potential Therapeutic Vaccine against Chronic Hepatitis B.
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Chronic hepatitis B (CHB) is the cause of severe liver damage, cirrhosis, and hepatocellular carcinoma for over 240 million people worldwide. Nowadays, several types of treatment are being investigated, including immunotherapy using hepatitis B core antigen (HBcAg) assembled into highly immunogenic
Oral administration of a chimeric Hepatitis B Virus S/preS1 antigen produced in lettuce triggers infection neutralizing antibodies in mice.
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Hepatitis B Virus (HBV) infection can be prevented by vaccination. Vaccines containing the small (S) envelope protein are currently used in universal vaccination programs and achieve protective immune response in more than 90% of recipients. However, new vaccination strategies are necessary for
A novel chimeric Hepatitis B virus S/preS1 antigen produced in mammalian and plant cells elicits stronger humoral and cellular immune response than the standard vaccine-constituent, S protein.
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Chronic Hepatitis B Virus (HBV) infection leads to severe liver pathogenesis associated with significant morbidity and mortality. As no curable medication is yet available, vaccination remains the most cost-effective approach to limit HBV spreading and control the infection. Although safe and
Hepatitis B surface antigen (HBsAg) expression in plant cell culture: Kinetics of antigen accumulation in batch culture and its intracellular form.
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The production of edible vaccines in transgenic plants and plant cell culture may be improved through a better understanding of antigen processing and assembly. The hepatitis B surface antigen (HBsAg) was chosen for study because it undergoes substantial and complex post-translational modifications,
Epitope Presentation of Dengue Viral Envelope Glycoprotein Domain III on Hepatitis B Core Protein Virus-Like Particles Produced in Nicotiana benthamiana.
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Dengue fever is currently ranked as the top emerging tropical disease, driven by increased global travel, urbanization, and poor hygiene conditions as well as global warming effects which facilitate the spread of Aedes mosquitoes beyond their current distribution. Today, more than 100
Rapid, high-level production of hepatitis B core antigen in plant leaf and its immunogenicity in mice.
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Hepatitis B core antigen (HBc or HBcAg) self-assembles into capsid particles and is extremely immunogenic. HBc has been extensively studied for its production in various expression systems and for the use of HBc particles for high-density, immunogenic presentation of foreign epitopes. Here we
Plant-produced hepatitis B core protein chimera carrying anthrax protective antigen domain-4.
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The hepatitis B core antigen (HBcAg) can generate a strong immune response and is recognized as an effective carrier for foreign epitopes. The domain-4 epitope of the anthrax protective antigen (PA-D4) plays an essential role in generating protective immunity against virulent Bacillus anthracis.
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