Mucosal Immunization with a Staphylococcus aureus IsdA-Cholera Toxin A 2 /B Chimera Induces Antigen-Specific Th2-Type Responses in Mice
Staphylococcus aureus is a leading cause of opportunistic infection worldwide and a significant public health threat. The iron-regulated surface determinant A (IsdA) adhesin is essential for S. aureus colonization on human nasal epithelial cells and plays an important role in iron acquisition and re...
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| Veröffentlicht in: | Clinical and vaccine immunology 2011-09, Vol.18 (9), p.1543-1551 |
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| creator | Arlian, Britni M. Tinker, Juliette K. |
| description | Staphylococcus aureus
is a leading cause of opportunistic infection worldwide and a significant public health threat. The iron-regulated surface determinant A (IsdA) adhesin is essential for
S. aureus
colonization on human nasal epithelial cells and plays an important role in iron acquisition and resistance to human skin defenses. Here we investigated the murine immune response to intranasal administration of a cholera toxin A
2
/B (CTA
2
/B) chimera containing IsdA. Plasmids were constructed to express the IsdA-CTA
2
/B chimera and control proteins in
Escherichia coli
. Proper construction of the chimera was verified by SDS-PAGE, Western blotting, GM1 enzyme-linked immunosorbent assay (ELISA), and confocal microscopy. Groups of female BALB/c mice were mock immunized or immunized with IsdA-CTA
2
/B, IsdA mixed with CTA
2
/B, or IsdA alone, followed by one booster immunization at 10 days postpriming. Analysis of serum IgG and nasal, intestinal, and vaginal IgA suggested that mucosal immunization with IsdA-CTA
2
/B induces significant IsdA-specific humoral immunity. Functional
in vitro
assays revealed that immune serum significantly blocks the adherence of
S. aureus
to human epithelial cells. Splenocytes from mice immunized with IsdA-CTA
2
/B showed specific cellular proliferation and production of interleukin-4 (IL-4) after
in vitro
stimulation. Immunization with IsdA-CTA
2
/B drove isotype switching to IgG1, indicative of a Th2-type response. Our results suggest that the immunogenicity of the
S. aureus
IsdA-CTA
2
/B chimera merits further investigation as a potential mucosal vaccine candidate. |
| doi_str_mv | 10.1128/CVI.05146-11 |
| format | Article |
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is a leading cause of opportunistic infection worldwide and a significant public health threat. The iron-regulated surface determinant A (IsdA) adhesin is essential for
S. aureus
colonization on human nasal epithelial cells and plays an important role in iron acquisition and resistance to human skin defenses. Here we investigated the murine immune response to intranasal administration of a cholera toxin A
2
/B (CTA
2
/B) chimera containing IsdA. Plasmids were constructed to express the IsdA-CTA
2
/B chimera and control proteins in
Escherichia coli
. Proper construction of the chimera was verified by SDS-PAGE, Western blotting, GM1 enzyme-linked immunosorbent assay (ELISA), and confocal microscopy. Groups of female BALB/c mice were mock immunized or immunized with IsdA-CTA
2
/B, IsdA mixed with CTA
2
/B, or IsdA alone, followed by one booster immunization at 10 days postpriming. Analysis of serum IgG and nasal, intestinal, and vaginal IgA suggested that mucosal immunization with IsdA-CTA
2
/B induces significant IsdA-specific humoral immunity. Functional
in vitro
assays revealed that immune serum significantly blocks the adherence of
S. aureus
to human epithelial cells. Splenocytes from mice immunized with IsdA-CTA
2
/B showed specific cellular proliferation and production of interleukin-4 (IL-4) after
in vitro
stimulation. Immunization with IsdA-CTA
2
/B drove isotype switching to IgG1, indicative of a Th2-type response. Our results suggest that the immunogenicity of the
S. aureus
IsdA-CTA
2
/B chimera merits further investigation as a potential mucosal vaccine candidate.</description><identifier>ISSN: 1556-6811</identifier><identifier>EISSN: 1556-679X</identifier><identifier>DOI: 10.1128/CVI.05146-11</identifier><language>eng</language><ispartof>Clinical and vaccine immunology, 2011-09, Vol.18 (9), p.1543-1551</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c150t-5236a03a0798a08d95fe7307f8cab919aca0f645dc71e665639518f4857a0d4d3</citedby><cites>FETCH-LOGICAL-c150t-5236a03a0798a08d95fe7307f8cab919aca0f645dc71e665639518f4857a0d4d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,3188,27924,27925</link.rule.ids></links><search><creatorcontrib>Arlian, Britni M.</creatorcontrib><creatorcontrib>Tinker, Juliette K.</creatorcontrib><title>Mucosal Immunization with a Staphylococcus aureus IsdA-Cholera Toxin A 2 /B Chimera Induces Antigen-Specific Th2-Type Responses in Mice</title><title>Clinical and vaccine immunology</title><description>Staphylococcus aureus
is a leading cause of opportunistic infection worldwide and a significant public health threat. The iron-regulated surface determinant A (IsdA) adhesin is essential for
S. aureus
colonization on human nasal epithelial cells and plays an important role in iron acquisition and resistance to human skin defenses. Here we investigated the murine immune response to intranasal administration of a cholera toxin A
2
/B (CTA
2
/B) chimera containing IsdA. Plasmids were constructed to express the IsdA-CTA
2
/B chimera and control proteins in
Escherichia coli
. Proper construction of the chimera was verified by SDS-PAGE, Western blotting, GM1 enzyme-linked immunosorbent assay (ELISA), and confocal microscopy. Groups of female BALB/c mice were mock immunized or immunized with IsdA-CTA
2
/B, IsdA mixed with CTA
2
/B, or IsdA alone, followed by one booster immunization at 10 days postpriming. Analysis of serum IgG and nasal, intestinal, and vaginal IgA suggested that mucosal immunization with IsdA-CTA
2
/B induces significant IsdA-specific humoral immunity. Functional
in vitro
assays revealed that immune serum significantly blocks the adherence of
S. aureus
to human epithelial cells. Splenocytes from mice immunized with IsdA-CTA
2
/B showed specific cellular proliferation and production of interleukin-4 (IL-4) after
in vitro
stimulation. Immunization with IsdA-CTA
2
/B drove isotype switching to IgG1, indicative of a Th2-type response. Our results suggest that the immunogenicity of the
S. aureus
IsdA-CTA
2
/B chimera merits further investigation as a potential mucosal vaccine candidate.</description><issn>1556-6811</issn><issn>1556-679X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNo1kNtOhDAQhhujievqnQ_QB7C7LaWlXCLxQLIbExeNd2QsRWqAEgrR9QV8bfF09c38-WcuPoTOGV0xFqh1-pitqGChJIwdoAUTQhIZxU-H_7Ni7BideP9Kacilihbocztp56HBWdtOnf2A0boOv9mxxoB3I_T1vnHaaT15DNNgZmS-TEhau8YMgHP3bjuc4ACvL3Fa2_Y7zLpy0sbjpBvti-nIrjfaVlbjvA5Ivu8Nvje-d52fO_P11mpzio4qaLw5--MSPVxf5ekt2dzdZGmyIZoJOhIRcAmUA41iBVSVsahMxGlUKQ3PMYtBA61kKEodMSOlkDwWTFWhEhHQMiz5El38_tWD834wVdEPtoVhXzBafEssZonFj8R55V-A22Tw</recordid><startdate>201109</startdate><enddate>201109</enddate><creator>Arlian, Britni M.</creator><creator>Tinker, Juliette K.</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201109</creationdate><title>Mucosal Immunization with a Staphylococcus aureus IsdA-Cholera Toxin A 2 /B Chimera Induces Antigen-Specific Th2-Type Responses in Mice</title><author>Arlian, Britni M. ; Tinker, Juliette K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c150t-5236a03a0798a08d95fe7307f8cab919aca0f645dc71e665639518f4857a0d4d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Arlian, Britni M.</creatorcontrib><creatorcontrib>Tinker, Juliette K.</creatorcontrib><collection>CrossRef</collection><jtitle>Clinical and vaccine immunology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Arlian, Britni M.</au><au>Tinker, Juliette K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mucosal Immunization with a Staphylococcus aureus IsdA-Cholera Toxin A 2 /B Chimera Induces Antigen-Specific Th2-Type Responses in Mice</atitle><jtitle>Clinical and vaccine immunology</jtitle><date>2011-09</date><risdate>2011</risdate><volume>18</volume><issue>9</issue><spage>1543</spage><epage>1551</epage><pages>1543-1551</pages><issn>1556-6811</issn><eissn>1556-679X</eissn><abstract>Staphylococcus aureus
is a leading cause of opportunistic infection worldwide and a significant public health threat. The iron-regulated surface determinant A (IsdA) adhesin is essential for
S. aureus
colonization on human nasal epithelial cells and plays an important role in iron acquisition and resistance to human skin defenses. Here we investigated the murine immune response to intranasal administration of a cholera toxin A
2
/B (CTA
2
/B) chimera containing IsdA. Plasmids were constructed to express the IsdA-CTA
2
/B chimera and control proteins in
Escherichia coli
. Proper construction of the chimera was verified by SDS-PAGE, Western blotting, GM1 enzyme-linked immunosorbent assay (ELISA), and confocal microscopy. Groups of female BALB/c mice were mock immunized or immunized with IsdA-CTA
2
/B, IsdA mixed with CTA
2
/B, or IsdA alone, followed by one booster immunization at 10 days postpriming. Analysis of serum IgG and nasal, intestinal, and vaginal IgA suggested that mucosal immunization with IsdA-CTA
2
/B induces significant IsdA-specific humoral immunity. Functional
in vitro
assays revealed that immune serum significantly blocks the adherence of
S. aureus
to human epithelial cells. Splenocytes from mice immunized with IsdA-CTA
2
/B showed specific cellular proliferation and production of interleukin-4 (IL-4) after
in vitro
stimulation. Immunization with IsdA-CTA
2
/B drove isotype switching to IgG1, indicative of a Th2-type response. Our results suggest that the immunogenicity of the
S. aureus
IsdA-CTA
2
/B chimera merits further investigation as a potential mucosal vaccine candidate.</abstract><doi>10.1128/CVI.05146-11</doi><tpages>9</tpages></addata></record> |
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| issn | 1556-6811 1556-679X |
| language | eng |
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| source | American Society for Microbiology; PubMed Central; Alma/SFX Local Collection |
| title | Mucosal Immunization with a Staphylococcus aureus IsdA-Cholera Toxin A 2 /B Chimera Induces Antigen-Specific Th2-Type Responses in Mice |
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