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Vitro and in vivo. These findings provide the framework for further investigations designed to target the UPR in glioma.Supporting InformationFigure S1 Samples Histology and densitometry. Histol-ogy of samples used in the glioma tissue microarray (A). Densitometry analysis of Western blots (B). (TIF)Figure SFigure S3 57773-63-4 web Effect of EGF SubA and SubA on cell proliferation. The influence of INCB039110 EGF-SubA and SubA on cell proliferation in the described cell lines and conditions were measured in real time by the xCELLigence system. Cells were seeded in proprietary plates and exposed to 1 pM of SubA, EGFSubA, or PBS alone. Cell proliferation was monitored every 15 minutes and the results are represented as the mean of quadruplets for each assay condition. This figure is a representative of three independent experiments. (TIF)EGFR and GRP78 expression in tumor cells. Depicted cell lines were lysed and total cellular protein isolated to evaluate for (A) EGFR and (B) GRP78 expression by immunoblot. Each figure is a representative of three independent experiments. (TIF)Author ContributionsConceived and designed the experiments: AHP BS PC. Performed the experiments: AHP BS SK. Analyzed the data: AHP YS PC. Contributed reagents/materials/analysis tools: AHP BS SK. Wrote the paper: AHP PC.
Vaccines administered via mucosal routes are sought-after because they can induce both mucosal and systemic immune responses to protect against infections caused by pathogens entering and colonising mucosal 25837696 surfaces such as the gastrointestinal tract (GIT). Mucosal, humoral responses are characterised by secretory antibodies of which the IgA isotype is the most prominent and IgG less abundant [1,2]. An effective mucosal vaccine must deliver antigen to mucosal inductive sites including the mucosal lymphoid tissue (MALT) or sub-epithelial dendritic cells (DCs) when MALT is absent [1,2]. Activated DCs then transport the antigen via the lymphatics to draining mesenteric lymph nodes (MLN) where antigen is presented and a specific immune response mounted. Unfortunately, mucosal immune responses are often variable, particularly when vaccines are delivered orally, exposing the antigen to likely enzymatic degradation in the acidic gastric environment [3]. Vaccine delivery from plant tissues may overcome or at the very least mitigate the hostile gastric environment. Evidence points to antigens bioencapsulated within a plant cell being better protected from the enzymatic degradation of the GIT, prolonging release and presentation of the intact antigen to immune responsive sites of the gut associated lymphoid tissues (GALT) [3]. In addition, plant-made vaccines have a reduced risk of contamination with animal pathogens [4,5] and are stable at room temperature whenstored as seed or freeze-dried material thus reducing the reliance for a cold chain [6,7]. The heat labile toxin (LT) of enterotoxigenic Escherichia coli is a well characterised, mucosal antigen often used as an adjuvant [8,9] or carrier protein [10]. LT comprises a single, active ADPribosylation subunit (LTA) and a non-toxic, pentameric subunit (LTB) [11,12] that selectively binds GM1 ganglioside receptors in the mucosal epithelium of the GIT [13,14]. LTB is stable in the hostile environment of the GIT [15], can be produced in transgenic plants and elicits potent antigen-specific immune responses when delivered orally from various plant tissues [3,10,16,17,18,19,20]. As such, LTB was chosen as a model antigen to study immuno.Vitro and in vivo. These findings provide the framework for further investigations designed to target the UPR in glioma.Supporting InformationFigure S1 Samples Histology and densitometry. Histol-ogy of samples used in the glioma tissue microarray (A). Densitometry analysis of Western blots (B). (TIF)Figure SFigure S3 Effect of EGF SubA and SubA on cell proliferation. The influence of EGF-SubA and SubA on cell proliferation in the described cell lines and conditions were measured in real time by the xCELLigence system. Cells were seeded in proprietary plates and exposed to 1 pM of SubA, EGFSubA, or PBS alone. Cell proliferation was monitored every 15 minutes and the results are represented as the mean of quadruplets for each assay condition. This figure is a representative of three independent experiments. (TIF)EGFR and GRP78 expression in tumor cells. Depicted cell lines were lysed and total cellular protein isolated to evaluate for (A) EGFR and (B) GRP78 expression by immunoblot. Each figure is a representative of three independent experiments. (TIF)Author ContributionsConceived and designed the experiments: AHP BS PC. Performed the experiments: AHP BS SK. Analyzed the data: AHP YS PC. Contributed reagents/materials/analysis tools: AHP BS SK. Wrote the paper: AHP PC.
Vaccines administered via mucosal routes are sought-after because they can induce both mucosal and systemic immune responses to protect against infections caused by pathogens entering and colonising mucosal 25837696 surfaces such as the gastrointestinal tract (GIT). Mucosal, humoral responses are characterised by secretory antibodies of which the IgA isotype is the most prominent and IgG less abundant [1,2]. An effective mucosal vaccine must deliver antigen to mucosal inductive sites including the mucosal lymphoid tissue (MALT) or sub-epithelial dendritic cells (DCs) when MALT is absent [1,2]. Activated DCs then transport the antigen via the lymphatics to draining mesenteric lymph nodes (MLN) where antigen is presented and a specific immune response mounted. Unfortunately, mucosal immune responses are often variable, particularly when vaccines are delivered orally, exposing the antigen to likely enzymatic degradation in the acidic gastric environment [3]. Vaccine delivery from plant tissues may overcome or at the very least mitigate the hostile gastric environment. Evidence points to antigens bioencapsulated within a plant cell being better protected from the enzymatic degradation of the GIT, prolonging release and presentation of the intact antigen to immune responsive sites of the gut associated lymphoid tissues (GALT) [3]. In addition, plant-made vaccines have a reduced risk of contamination with animal pathogens [4,5] and are stable at room temperature whenstored as seed or freeze-dried material thus reducing the reliance for a cold chain [6,7]. The heat labile toxin (LT) of enterotoxigenic Escherichia coli is a well characterised, mucosal antigen often used as an adjuvant [8,9] or carrier protein [10]. LT comprises a single, active ADPribosylation subunit (LTA) and a non-toxic, pentameric subunit (LTB) [11,12] that selectively binds GM1 ganglioside receptors in the mucosal epithelium of the GIT [13,14]. LTB is stable in the hostile environment of the GIT [15], can be produced in transgenic plants and elicits potent antigen-specific immune responses when delivered orally from various plant tissues [3,10,16,17,18,19,20]. As such, LTB was chosen as a model antigen to study immuno.

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