author_facet Kaltenmeier, Christof
Gawanbacht, Ali
Beyer, Thamara
Lindner, Stefanie
Trzaska, Timo
van der Merwe, Johannes Andreas
Härter, Georg
Grüner, Beate
Fabricius, Dorit
Lotfi, Ramin
Schwarz, Klaus
Schütz, Catharina
Hönig, Manfred
Schulz, Ansgar
Kern, Peter
Bommer, Martin
Schrezenmeier, Hubert
Kirchhoff, Frank
Jahrsdörfer, Bernd
Kaltenmeier, Christof
Gawanbacht, Ali
Beyer, Thamara
Lindner, Stefanie
Trzaska, Timo
van der Merwe, Johannes Andreas
Härter, Georg
Grüner, Beate
Fabricius, Dorit
Lotfi, Ramin
Schwarz, Klaus
Schütz, Catharina
Hönig, Manfred
Schulz, Ansgar
Kern, Peter
Bommer, Martin
Schrezenmeier, Hubert
Kirchhoff, Frank
Jahrsdörfer, Bernd
author Kaltenmeier, Christof
Gawanbacht, Ali
Beyer, Thamara
Lindner, Stefanie
Trzaska, Timo
van der Merwe, Johannes Andreas
Härter, Georg
Grüner, Beate
Fabricius, Dorit
Lotfi, Ramin
Schwarz, Klaus
Schütz, Catharina
Hönig, Manfred
Schulz, Ansgar
Kern, Peter
Bommer, Martin
Schrezenmeier, Hubert
Kirchhoff, Frank
Jahrsdörfer, Bernd
spellingShingle Kaltenmeier, Christof
Gawanbacht, Ali
Beyer, Thamara
Lindner, Stefanie
Trzaska, Timo
van der Merwe, Johannes Andreas
Härter, Georg
Grüner, Beate
Fabricius, Dorit
Lotfi, Ramin
Schwarz, Klaus
Schütz, Catharina
Hönig, Manfred
Schulz, Ansgar
Kern, Peter
Bommer, Martin
Schrezenmeier, Hubert
Kirchhoff, Frank
Jahrsdörfer, Bernd
The Journal of Immunology
CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
Immunology
Immunology and Allergy
author_sort kaltenmeier, christof
spelling Kaltenmeier, Christof Gawanbacht, Ali Beyer, Thamara Lindner, Stefanie Trzaska, Timo van der Merwe, Johannes Andreas Härter, Georg Grüner, Beate Fabricius, Dorit Lotfi, Ramin Schwarz, Klaus Schütz, Catharina Hönig, Manfred Schulz, Ansgar Kern, Peter Bommer, Martin Schrezenmeier, Hubert Kirchhoff, Frank Jahrsdörfer, Bernd 0022-1767 1550-6606 The American Association of Immunologists Immunology Immunology and Allergy http://dx.doi.org/10.4049/jimmunol.1402568 <jats:title>Abstract</jats:title> <jats:p>IL-21 can induce both plasma cells and regulatory B cells. In this article, we demonstrate that untreated HIV patients display CD4+ T cells with enhanced IL-21 expression and high in vivo frequencies of regulatory B cells overexpressing the serine protease granzyme B. Granzyme B–expressing regulatory B cells (GraB cells) cells from HIV patients exhibit increased expression of CD5, CD43, CD86, and CD147 but do not produce IL-10. The main functional characteristic of their regulatory activity is direct granzyme B–dependent degradation of the TCR-ζ–chain, resulting in significantly decreased proliferative T cell responses. Although Th cells from HIV patients secrete IL-21 in a Nef-dependent manner, they barely express CD40L. When culturing such IL-21+CD40L− Th cells with B cells, the former directly induce B cell differentiation into GraB cells. In contrast, the addition of soluble CD40L multimers to T cell/B cell cultures redirects B cell differentiation toward plasma cells, indicating that CD40L determines the direction of IL-21–dependent B cell differentiation. As proof of principle, we confirmed this mechanism in a patient lacking intact CD40 signaling due to a NEMO mutation. The majority of peripheral B cells from this patient were GraB cells and strongly suppressed T cell proliferation. In conclusion, GraB cells represent potent regulatory B cells in humans that are phenotypically and functionally distinct from B10 cells and occur in early HIV infection. GraB cells may contribute significantly to immune dysfunction in HIV patients, and may also explain ineffective Ab responses after vaccination. The use of soluble CD40L multimers may help to improve vaccination responses in HIV patients.</jats:p> CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients The Journal of Immunology
doi_str_mv 10.4049/jimmunol.1402568
facet_avail Online
Free
finc_class_facet Medizin
format ElectronicArticle
fullrecord blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNDA0OS9qaW1tdW5vbC4xNDAyNTY4
id ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNDA0OS9qaW1tdW5vbC4xNDAyNTY4
institution DE-Gla1
DE-Zi4
DE-15
DE-Pl11
DE-Rs1
DE-105
DE-14
DE-Ch1
DE-L229
DE-D275
DE-Bn3
DE-Brt1
DE-Zwi2
DE-D161
imprint The American Association of Immunologists, 2015
imprint_str_mv The American Association of Immunologists, 2015
issn 0022-1767
1550-6606
issn_str_mv 0022-1767
1550-6606
language English
mega_collection The American Association of Immunologists (CrossRef)
match_str kaltenmeier2015cd4tcellderivedil21anddeprivationofcd40signalingfavortheinvivodevelopmentofgranzymebexpressingregulatorybcellsinhivpatients
publishDateSort 2015
publisher The American Association of Immunologists
recordtype ai
record_format ai
series The Journal of Immunology
source_id 49
title CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_unstemmed CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_full CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_fullStr CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_full_unstemmed CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_short CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_sort cd4+ t cell–derived il-21 and deprivation of cd40 signaling favor the in vivo development of granzyme b–expressing regulatory b cells in hiv patients
topic Immunology
Immunology and Allergy
url http://dx.doi.org/10.4049/jimmunol.1402568
publishDate 2015
physical 3768-3777
description <jats:title>Abstract</jats:title> <jats:p>IL-21 can induce both plasma cells and regulatory B cells. In this article, we demonstrate that untreated HIV patients display CD4+ T cells with enhanced IL-21 expression and high in vivo frequencies of regulatory B cells overexpressing the serine protease granzyme B. Granzyme B–expressing regulatory B cells (GraB cells) cells from HIV patients exhibit increased expression of CD5, CD43, CD86, and CD147 but do not produce IL-10. The main functional characteristic of their regulatory activity is direct granzyme B–dependent degradation of the TCR-ζ–chain, resulting in significantly decreased proliferative T cell responses. Although Th cells from HIV patients secrete IL-21 in a Nef-dependent manner, they barely express CD40L. When culturing such IL-21+CD40L− Th cells with B cells, the former directly induce B cell differentiation into GraB cells. In contrast, the addition of soluble CD40L multimers to T cell/B cell cultures redirects B cell differentiation toward plasma cells, indicating that CD40L determines the direction of IL-21–dependent B cell differentiation. As proof of principle, we confirmed this mechanism in a patient lacking intact CD40 signaling due to a NEMO mutation. The majority of peripheral B cells from this patient were GraB cells and strongly suppressed T cell proliferation. In conclusion, GraB cells represent potent regulatory B cells in humans that are phenotypically and functionally distinct from B10 cells and occur in early HIV infection. GraB cells may contribute significantly to immune dysfunction in HIV patients, and may also explain ineffective Ab responses after vaccination. The use of soluble CD40L multimers may help to improve vaccination responses in HIV patients.</jats:p>
container_issue 8
container_start_page 3768
container_title The Journal of Immunology
container_volume 194
format_de105 Article, E-Article
format_de14 Article, E-Article
format_de15 Article, E-Article
format_de520 Article, E-Article
format_de540 Article, E-Article
format_dech1 Article, E-Article
format_ded117 Article, E-Article
format_degla1 E-Article
format_del152 Buch
format_del189 Article, E-Article
format_dezi4 Article
format_dezwi2 Article, E-Article
format_finc Article, E-Article
format_nrw Article, E-Article
_version_ 1792341947490238466
geogr_code not assigned
last_indexed 2024-03-01T16:26:24.738Z
geogr_code_person not assigned
openURL url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=CD4%2B+T+Cell%E2%80%93Derived+IL-21+and+Deprivation+of+CD40+Signaling+Favor+the+In+Vivo+Development+of+Granzyme+B%E2%80%93Expressing+Regulatory+B+Cells+in+HIV+Patients&rft.date=2015-04-15&genre=article&issn=1550-6606&volume=194&issue=8&spage=3768&epage=3777&pages=3768-3777&jtitle=The+Journal+of+Immunology&atitle=CD4%2B+T+Cell%E2%80%93Derived+IL-21+and+Deprivation+of+CD40+Signaling+Favor+the+In+Vivo+Development+of+Granzyme+B%E2%80%93Expressing+Regulatory+B+Cells+in+HIV+Patients&aulast=Jahrsd%C3%B6rfer&aufirst=Bernd&rft_id=info%3Adoi%2F10.4049%2Fjimmunol.1402568&rft.language%5B0%5D=eng
SOLR
_version_ 1792341947490238466
author Kaltenmeier, Christof, Gawanbacht, Ali, Beyer, Thamara, Lindner, Stefanie, Trzaska, Timo, van der Merwe, Johannes Andreas, Härter, Georg, Grüner, Beate, Fabricius, Dorit, Lotfi, Ramin, Schwarz, Klaus, Schütz, Catharina, Hönig, Manfred, Schulz, Ansgar, Kern, Peter, Bommer, Martin, Schrezenmeier, Hubert, Kirchhoff, Frank, Jahrsdörfer, Bernd
author_facet Kaltenmeier, Christof, Gawanbacht, Ali, Beyer, Thamara, Lindner, Stefanie, Trzaska, Timo, van der Merwe, Johannes Andreas, Härter, Georg, Grüner, Beate, Fabricius, Dorit, Lotfi, Ramin, Schwarz, Klaus, Schütz, Catharina, Hönig, Manfred, Schulz, Ansgar, Kern, Peter, Bommer, Martin, Schrezenmeier, Hubert, Kirchhoff, Frank, Jahrsdörfer, Bernd, Kaltenmeier, Christof, Gawanbacht, Ali, Beyer, Thamara, Lindner, Stefanie, Trzaska, Timo, van der Merwe, Johannes Andreas, Härter, Georg, Grüner, Beate, Fabricius, Dorit, Lotfi, Ramin, Schwarz, Klaus, Schütz, Catharina, Hönig, Manfred, Schulz, Ansgar, Kern, Peter, Bommer, Martin, Schrezenmeier, Hubert, Kirchhoff, Frank, Jahrsdörfer, Bernd
author_sort kaltenmeier, christof
container_issue 8
container_start_page 3768
container_title The Journal of Immunology
container_volume 194
description <jats:title>Abstract</jats:title> <jats:p>IL-21 can induce both plasma cells and regulatory B cells. In this article, we demonstrate that untreated HIV patients display CD4+ T cells with enhanced IL-21 expression and high in vivo frequencies of regulatory B cells overexpressing the serine protease granzyme B. Granzyme B–expressing regulatory B cells (GraB cells) cells from HIV patients exhibit increased expression of CD5, CD43, CD86, and CD147 but do not produce IL-10. The main functional characteristic of their regulatory activity is direct granzyme B–dependent degradation of the TCR-ζ–chain, resulting in significantly decreased proliferative T cell responses. Although Th cells from HIV patients secrete IL-21 in a Nef-dependent manner, they barely express CD40L. When culturing such IL-21+CD40L− Th cells with B cells, the former directly induce B cell differentiation into GraB cells. In contrast, the addition of soluble CD40L multimers to T cell/B cell cultures redirects B cell differentiation toward plasma cells, indicating that CD40L determines the direction of IL-21–dependent B cell differentiation. As proof of principle, we confirmed this mechanism in a patient lacking intact CD40 signaling due to a NEMO mutation. The majority of peripheral B cells from this patient were GraB cells and strongly suppressed T cell proliferation. In conclusion, GraB cells represent potent regulatory B cells in humans that are phenotypically and functionally distinct from B10 cells and occur in early HIV infection. GraB cells may contribute significantly to immune dysfunction in HIV patients, and may also explain ineffective Ab responses after vaccination. The use of soluble CD40L multimers may help to improve vaccination responses in HIV patients.</jats:p>
doi_str_mv 10.4049/jimmunol.1402568
facet_avail Online, Free
finc_class_facet Medizin
format ElectronicArticle
format_de105 Article, E-Article
format_de14 Article, E-Article
format_de15 Article, E-Article
format_de520 Article, E-Article
format_de540 Article, E-Article
format_dech1 Article, E-Article
format_ded117 Article, E-Article
format_degla1 E-Article
format_del152 Buch
format_del189 Article, E-Article
format_dezi4 Article
format_dezwi2 Article, E-Article
format_finc Article, E-Article
format_nrw Article, E-Article
geogr_code not assigned
geogr_code_person not assigned
id ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuNDA0OS9qaW1tdW5vbC4xNDAyNTY4
imprint The American Association of Immunologists, 2015
imprint_str_mv The American Association of Immunologists, 2015
institution DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161
issn 0022-1767, 1550-6606
issn_str_mv 0022-1767, 1550-6606
language English
last_indexed 2024-03-01T16:26:24.738Z
match_str kaltenmeier2015cd4tcellderivedil21anddeprivationofcd40signalingfavortheinvivodevelopmentofgranzymebexpressingregulatorybcellsinhivpatients
mega_collection The American Association of Immunologists (CrossRef)
physical 3768-3777
publishDate 2015
publishDateSort 2015
publisher The American Association of Immunologists
record_format ai
recordtype ai
series The Journal of Immunology
source_id 49
spelling Kaltenmeier, Christof Gawanbacht, Ali Beyer, Thamara Lindner, Stefanie Trzaska, Timo van der Merwe, Johannes Andreas Härter, Georg Grüner, Beate Fabricius, Dorit Lotfi, Ramin Schwarz, Klaus Schütz, Catharina Hönig, Manfred Schulz, Ansgar Kern, Peter Bommer, Martin Schrezenmeier, Hubert Kirchhoff, Frank Jahrsdörfer, Bernd 0022-1767 1550-6606 The American Association of Immunologists Immunology Immunology and Allergy http://dx.doi.org/10.4049/jimmunol.1402568 <jats:title>Abstract</jats:title> <jats:p>IL-21 can induce both plasma cells and regulatory B cells. In this article, we demonstrate that untreated HIV patients display CD4+ T cells with enhanced IL-21 expression and high in vivo frequencies of regulatory B cells overexpressing the serine protease granzyme B. Granzyme B–expressing regulatory B cells (GraB cells) cells from HIV patients exhibit increased expression of CD5, CD43, CD86, and CD147 but do not produce IL-10. The main functional characteristic of their regulatory activity is direct granzyme B–dependent degradation of the TCR-ζ–chain, resulting in significantly decreased proliferative T cell responses. Although Th cells from HIV patients secrete IL-21 in a Nef-dependent manner, they barely express CD40L. When culturing such IL-21+CD40L− Th cells with B cells, the former directly induce B cell differentiation into GraB cells. In contrast, the addition of soluble CD40L multimers to T cell/B cell cultures redirects B cell differentiation toward plasma cells, indicating that CD40L determines the direction of IL-21–dependent B cell differentiation. As proof of principle, we confirmed this mechanism in a patient lacking intact CD40 signaling due to a NEMO mutation. The majority of peripheral B cells from this patient were GraB cells and strongly suppressed T cell proliferation. In conclusion, GraB cells represent potent regulatory B cells in humans that are phenotypically and functionally distinct from B10 cells and occur in early HIV infection. GraB cells may contribute significantly to immune dysfunction in HIV patients, and may also explain ineffective Ab responses after vaccination. The use of soluble CD40L multimers may help to improve vaccination responses in HIV patients.</jats:p> CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients The Journal of Immunology
spellingShingle Kaltenmeier, Christof, Gawanbacht, Ali, Beyer, Thamara, Lindner, Stefanie, Trzaska, Timo, van der Merwe, Johannes Andreas, Härter, Georg, Grüner, Beate, Fabricius, Dorit, Lotfi, Ramin, Schwarz, Klaus, Schütz, Catharina, Hönig, Manfred, Schulz, Ansgar, Kern, Peter, Bommer, Martin, Schrezenmeier, Hubert, Kirchhoff, Frank, Jahrsdörfer, Bernd, The Journal of Immunology, CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients, Immunology, Immunology and Allergy
title CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_full CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_fullStr CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_full_unstemmed CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_short CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
title_sort cd4+ t cell–derived il-21 and deprivation of cd40 signaling favor the in vivo development of granzyme b–expressing regulatory b cells in hiv patients
title_unstemmed CD4+ T Cell–Derived IL-21 and Deprivation of CD40 Signaling Favor the In Vivo Development of Granzyme B–Expressing Regulatory B Cells in HIV Patients
topic Immunology, Immunology and Allergy
url http://dx.doi.org/10.4049/jimmunol.1402568