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Opposing Development of Cytotoxic and Follicular Helper CD4 T Cells Controlled by the TCF-1-Bcl6 Nexus

Identifieur interne : 000731 ( Pmc/Checkpoint ); précédent : 000730; suivant : 000732

Opposing Development of Cytotoxic and Follicular Helper CD4 T Cells Controlled by the TCF-1-Bcl6 Nexus

Auteurs : Tiziano Donnarumma [Royaume-Uni] ; George R. Young [Royaume-Uni] ; Julia Merkenschlager [Royaume-Uni] ; Urszula Eksmond [Royaume-Uni] ; Nadine Bongard [Allemagne] ; Stephen L. Nutt [Australie] ; Claude Boyer [France] ; Ulf Dittmer [Allemagne] ; Vu Thuy Khanh Le-Trilling [Allemagne] ; Mirko Trilling [Allemagne] ; Wibke Bayer [Allemagne] ; George Kassiotis [Royaume-Uni]

Source :

RBID : PMC:5149578

Abstract

Summary

CD4+ T cells develop distinct and often contrasting helper, regulatory, or cytotoxic activities. Typically a property of CD8+ T cells, granzyme-mediated cytotoxic T cell (CTL) potential is also exerted by CD4+ T cells. However, the conditions that induce CD4+ CTLs are not entirely understood. Using single-cell transcriptional profiling, we uncover a unique signature of Granzyme B (GzmB)+ CD4+ CTLs, which distinguishes them from other CD4+ T helper (Th) cells, including Th1 cells, and strongly contrasts with the follicular helper T (Tfh) cell signature. The balance between CD4+ CTL and Tfh differentiation heavily depends on the class of infecting virus and is jointly regulated by the Tfh-related transcription factors Bcl6 and Tcf7 (encoding TCF-1) and by the expression of the inhibitory receptors PD-1 and LAG3. This unique profile of CD4+ CTLs offers targets for their study, and its antagonism by the Tfh program separates CD4+ T cells with either helper or killer functions.


Url:
DOI: 10.1016/j.celrep.2016.10.013
PubMed: 27806296
PubMed Central: 5149578


Affiliations:


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PMC:5149578

Le document en format XML

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<title xml:lang="en" level="a" type="main">Opposing Development of Cytotoxic and Follicular Helper CD4 T Cells Controlled by the TCF-1-Bcl6 Nexus</title>
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<name sortKey="Donnarumma, Tiziano" sort="Donnarumma, Tiziano" uniqKey="Donnarumma T" first="Tiziano" last="Donnarumma">Tiziano Donnarumma</name>
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<name sortKey="Young, George R" sort="Young, George R" uniqKey="Young G" first="George R." last="Young">George R. Young</name>
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<name sortKey="Merkenschlager, Julia" sort="Merkenschlager, Julia" uniqKey="Merkenschlager J" first="Julia" last="Merkenschlager">Julia Merkenschlager</name>
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<name sortKey="Eksmond, Urszula" sort="Eksmond, Urszula" uniqKey="Eksmond U" first="Urszula" last="Eksmond">Urszula Eksmond</name>
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<name sortKey="Bongard, Nadine" sort="Bongard, Nadine" uniqKey="Bongard N" first="Nadine" last="Bongard">Nadine Bongard</name>
<affiliation wicri:level="1">
<nlm:aff id="aff4">Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</nlm:aff>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen</wicri:regionArea>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
</affiliation>
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<author>
<name sortKey="Nutt, Stephen L" sort="Nutt, Stephen L" uniqKey="Nutt S" first="Stephen L." last="Nutt">Stephen L. Nutt</name>
<affiliation wicri:level="1">
<nlm:aff id="aff5">The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia</nlm:aff>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052</wicri:regionArea>
<wicri:noRegion>VIC 3052</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Boyer, Claude" sort="Boyer, Claude" uniqKey="Boyer C" first="Claude" last="Boyer">Claude Boyer</name>
<affiliation wicri:level="1">
<nlm:aff id="aff6">Centre d’Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille 13288, France</nlm:aff>
<country xml:lang="fr">France</country>
<wicri:regionArea>Centre d’Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille 13288</wicri:regionArea>
<wicri:noRegion>13288</wicri:noRegion>
<placeName>
<settlement type="city">Marseille</settlement>
<region type="région" nuts="2">Provence-Alpes-Côte d'Azur</region>
</placeName>
</affiliation>
</author>
<author>
<name sortKey="Dittmer, Ulf" sort="Dittmer, Ulf" uniqKey="Dittmer U" first="Ulf" last="Dittmer">Ulf Dittmer</name>
<affiliation wicri:level="1">
<nlm:aff id="aff4">Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</nlm:aff>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen</wicri:regionArea>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Le Trilling, Vu Thuy Khanh" sort="Le Trilling, Vu Thuy Khanh" uniqKey="Le Trilling V" first="Vu Thuy Khanh" last="Le-Trilling">Vu Thuy Khanh Le-Trilling</name>
<affiliation wicri:level="1">
<nlm:aff id="aff4">Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</nlm:aff>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen</wicri:regionArea>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Trilling, Mirko" sort="Trilling, Mirko" uniqKey="Trilling M" first="Mirko" last="Trilling">Mirko Trilling</name>
<affiliation wicri:level="1">
<nlm:aff id="aff4">Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</nlm:aff>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen</wicri:regionArea>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Bayer, Wibke" sort="Bayer, Wibke" uniqKey="Bayer W" first="Wibke" last="Bayer">Wibke Bayer</name>
<affiliation wicri:level="1">
<nlm:aff id="aff4">Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</nlm:aff>
<country xml:lang="fr">Allemagne</country>
<wicri:regionArea>Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen</wicri:regionArea>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
<wicri:noRegion>45122 Essen</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Kassiotis, George" sort="Kassiotis, George" uniqKey="Kassiotis G" first="George" last="Kassiotis">George Kassiotis</name>
<affiliation wicri:level="1">
<nlm:aff id="aff1">Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London NW1 1AT</wicri:regionArea>
<wicri:noRegion>London NW1 1AT</wicri:noRegion>
</affiliation>
<affiliation wicri:level="1">
<nlm:aff id="aff3">Department of Medicine, Faculty of Medicine, Imperial College London, London W2 1PG, UK</nlm:aff>
<country xml:lang="fr">Royaume-Uni</country>
<wicri:regionArea>Department of Medicine, Faculty of Medicine, Imperial College London, London W2 1PG</wicri:regionArea>
<wicri:noRegion>London W2 1PG</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series>
<title level="j">Cell Reports</title>
<idno type="eISSN">2211-1247</idno>
<imprint>
<date when="2016">2016</date>
</imprint>
</series>
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<front>
<div type="abstract" xml:lang="en">
<title>Summary</title>
<p>CD4
<sup>+</sup>
T cells develop distinct and often contrasting helper, regulatory, or cytotoxic activities. Typically a property of CD8
<sup>+</sup>
T cells, granzyme-mediated cytotoxic T cell (CTL) potential is also exerted by CD4
<sup>+</sup>
T cells. However, the conditions that induce CD4
<sup>+</sup>
CTLs are not entirely understood. Using single-cell transcriptional profiling, we uncover a unique signature of Granzyme B (GzmB)
<sup>+</sup>
CD4
<sup>+</sup>
CTLs, which distinguishes them from other CD4
<sup>+</sup>
T helper (Th) cells, including Th1 cells, and strongly contrasts with the follicular helper T (Tfh) cell signature. The balance between CD4
<sup>+</sup>
CTL and Tfh differentiation heavily depends on the class of infecting virus and is jointly regulated by the Tfh-related transcription factors
<italic>Bcl6</italic>
and
<italic>Tcf7</italic>
(encoding TCF-1) and by the expression of the inhibitory receptors PD-1 and LAG3. This unique profile of CD4
<sup>+</sup>
CTLs offers targets for their study, and its antagonism by the Tfh program separates CD4
<sup>+</sup>
T cells with either helper or killer functions.</p>
</div>
</front>
<back>
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</TEI>
<pmc article-type="research-article">
<pmc-dir>properties open_access</pmc-dir>
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Cell Rep</journal-id>
<journal-id journal-id-type="iso-abbrev">Cell Rep</journal-id>
<journal-title-group>
<journal-title>Cell Reports</journal-title>
</journal-title-group>
<issn pub-type="epub">2211-1247</issn>
<publisher>
<publisher-name>Cell Press</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="pmid">27806296</article-id>
<article-id pub-id-type="pmc">5149578</article-id>
<article-id pub-id-type="publisher-id">S2211-1247(16)31399-7</article-id>
<article-id pub-id-type="doi">10.1016/j.celrep.2016.10.013</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Article</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Opposing Development of Cytotoxic and Follicular Helper CD4 T Cells Controlled by the TCF-1-Bcl6 Nexus</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Donnarumma</surname>
<given-names>Tiziano</given-names>
</name>
<xref rid="aff1" ref-type="aff">1</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Young</surname>
<given-names>George R.</given-names>
</name>
<xref rid="aff1" ref-type="aff">1</xref>
<xref rid="aff2" ref-type="aff">2</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Merkenschlager</surname>
<given-names>Julia</given-names>
</name>
<xref rid="aff1" ref-type="aff">1</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Eksmond</surname>
<given-names>Urszula</given-names>
</name>
<xref rid="aff1" ref-type="aff">1</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Bongard</surname>
<given-names>Nadine</given-names>
</name>
<xref rid="aff4" ref-type="aff">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Nutt</surname>
<given-names>Stephen L.</given-names>
</name>
<xref rid="aff5" ref-type="aff">5</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Boyer</surname>
<given-names>Claude</given-names>
</name>
<xref rid="aff6" ref-type="aff">6</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Dittmer</surname>
<given-names>Ulf</given-names>
</name>
<xref rid="aff4" ref-type="aff">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Le-Trilling</surname>
<given-names>Vu Thuy Khanh</given-names>
</name>
<xref rid="aff4" ref-type="aff">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Trilling</surname>
<given-names>Mirko</given-names>
</name>
<xref rid="aff4" ref-type="aff">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Bayer</surname>
<given-names>Wibke</given-names>
</name>
<xref rid="aff4" ref-type="aff">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Kassiotis</surname>
<given-names>George</given-names>
</name>
<email>george.kassiotis@crick.ac.uk</email>
<xref rid="aff1" ref-type="aff">1</xref>
<xref rid="aff3" ref-type="aff">3</xref>
<xref rid="fn1" ref-type="fn">7</xref>
<xref rid="cor1" ref-type="corresp"></xref>
</contrib>
</contrib-group>
<aff id="aff1">
<label>1</label>
Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK</aff>
<aff id="aff2">
<label>2</label>
Retrovirus-Host Interactions, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK</aff>
<aff id="aff3">
<label>3</label>
Department of Medicine, Faculty of Medicine, Imperial College London, London W2 1PG, UK</aff>
<aff id="aff4">
<label>4</label>
Institute for Virology, University Hospital Essen, University Duisburg-Essen, 45122 Essen, Germany</aff>
<aff id="aff5">
<label>5</label>
The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia</aff>
<aff id="aff6">
<label>6</label>
Centre d’Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille 13288, France</aff>
<author-notes>
<corresp id="cor1">
<label></label>
Corresponding author
<email>george.kassiotis@crick.ac.uk</email>
</corresp>
<fn id="fn1">
<label>7</label>
<p id="ntpara0010">Lead Contact</p>
</fn>
</author-notes>
<pub-date pub-type="pmc-release">
<day>01</day>
<month>11</month>
<year>2016</year>
</pub-date>
<pmc-comment> PMC Release delay is 0 months and 0 days and was based on .</pmc-comment>
<pub-date pub-type="collection">
<day>01</day>
<month>11</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>01</day>
<month>11</month>
<year>2016</year>
</pub-date>
<volume>17</volume>
<issue>6</issue>
<fpage>1571</fpage>
<lpage>1583</lpage>
<history>
<date date-type="received">
<day>7</day>
<month>6</month>
<year>2016</year>
</date>
<date date-type="rev-recd">
<day>31</day>
<month>8</month>
<year>2016</year>
</date>
<date date-type="accepted">
<day>4</day>
<month>10</month>
<year>2016</year>
</date>
</history>
<permissions>
<copyright-statement>© 2016 The Author(s)</copyright-statement>
<copyright-year>2016</copyright-year>
<license license-type="CC BY" xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).</license-p>
</license>
</permissions>
<abstract id="abs0010">
<title>Summary</title>
<p>CD4
<sup>+</sup>
T cells develop distinct and often contrasting helper, regulatory, or cytotoxic activities. Typically a property of CD8
<sup>+</sup>
T cells, granzyme-mediated cytotoxic T cell (CTL) potential is also exerted by CD4
<sup>+</sup>
T cells. However, the conditions that induce CD4
<sup>+</sup>
CTLs are not entirely understood. Using single-cell transcriptional profiling, we uncover a unique signature of Granzyme B (GzmB)
<sup>+</sup>
CD4
<sup>+</sup>
CTLs, which distinguishes them from other CD4
<sup>+</sup>
T helper (Th) cells, including Th1 cells, and strongly contrasts with the follicular helper T (Tfh) cell signature. The balance between CD4
<sup>+</sup>
CTL and Tfh differentiation heavily depends on the class of infecting virus and is jointly regulated by the Tfh-related transcription factors
<italic>Bcl6</italic>
and
<italic>Tcf7</italic>
(encoding TCF-1) and by the expression of the inhibitory receptors PD-1 and LAG3. This unique profile of CD4
<sup>+</sup>
CTLs offers targets for their study, and its antagonism by the Tfh program separates CD4
<sup>+</sup>
T cells with either helper or killer functions.</p>
</abstract>
<abstract abstract-type="graphical" id="abs0015">
<title>Graphical Abstract</title>
<fig id="undfig1" position="anchor">
<graphic xlink:href="fx1"></graphic>
</fig>
</abstract>
<abstract abstract-type="author-highlights" id="abs0020">
<title>Highlights</title>
<p>
<list list-type="simple">
<list-item id="u0010">
<label></label>
<p>Adenoviruses prime CD4 T cells with CTL potential, but retroviruses do not</p>
</list-item>
<list-item id="u0015">
<label></label>
<p>CD4 CTLs are transcriptionally distinguishable from other Th cells</p>
</list-item>
<list-item id="u0020">
<label></label>
<p>The CD4 CTL program is the direct opposite of the Tfh program</p>
</list-item>
<list-item id="u0025">
<label></label>
<p>CD4 CTLs are restrained by the TCF-1-Bcl6 nexus and by PD-1 and LAG3</p>
</list-item>
</list>
</p>
</abstract>
<abstract abstract-type="teaser" id="abs0025">
<p>“Helper” CD4 T cells can also exhibit granzyme-mediated cytotoxicity. Donnarumma et al. investigate the conditions that induce CD4 CTLs and describe the dominant effect of the class of infecting virus. They uncover a unique transcriptional signature of CD4 CTLs and its multi-layered control.</p>
</abstract>
<kwd-group id="kwrds0010">
<title>Keywords</title>
<kwd>cytotoxic CD4 T cells</kwd>
<kwd>retroviral infection</kwd>
<kwd>adenovirus-based vaccination</kwd>
<kwd>single-cell RNA sequencing</kwd>
<kwd>inhibitory receptors</kwd>
<kwd>CD4 T cell differentiation</kwd>
<kwd>antiviral immunity</kwd>
</kwd-group>
</article-meta>
<notes>
<p id="misc0010">Published: November 1, 2016</p>
</notes>
</front>
<floats-group>
<fig id="fig1">
<label>Figure 1</label>
<caption>
<p>CD4
<sup>+</sup>
CTL Development Depends on Infecting Virus</p>
<p>(A) Expression of
<italic>Gzmb</italic>
, relative to
<italic>Hprt</italic>
, assessed by qRT-PCR in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Plotted are the mean values (±SEM) of four technical replicates, from two experiments with five mice per group per experiment.</p>
<p>(B) Flow-cytometric detection (left) and efficiency of in vivo killing (right) of env
<sub>122–141</sub>
-pulsed CD45.1
<sup>+</sup>
and non-pulsed CD45.2
<sup>+</sup>
B cells in host splenocytes, 24 hr after transfer into CD45.1
<sup>+</sup>
CD45.2
<sup>+</sup>
hosts (5 × 10
<sup>6</sup>
of each per host) that had also received EF4.1 CD4
<sup>+</sup>
T cells and had either been infected with FV or immunized with Ad5.pIX-gp70 7 days earlier.</p>
<p>(C) Flow-cytometric detection (left) and efficiency of in vitro killing (right) of env
<sub>122–141</sub>
-pulsed and non-pulsed B cells, 2 hr after culture with env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization.</p>
<p>(D) Flow-cytometric detection of intracellular GzmB host naive (CD44
<sup></sup>
) or env-reactive (CD44
<sup>+</sup>
) donor EF4.1 CD4
<sup>+</sup>
T cells (left) and frequency of GzmB
<sup>+</sup>
cells in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells (right) in the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization.</p>
<p>(E) Frequency of intracellular GzmB
<sup>+</sup>
cells in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells in the spleens of recipient mice, 7 days after adoptive transfer and FV infection, F-MLV-N infection, env
<sub>122–141</sub>
peptide immunization in the Sigma Adjuvant System, FBL-3 leukemia cell transplantation, mCMV.env infection, or Ad5.pIX-gp70 immunization.</p>
<p>In (B) to (E), each symbol in the scatterplots represents an individual recipient mouse.</p>
<p>See also
<xref rid="mmc1" ref-type="supplementary-material">Figures S1</xref>
,
<xref rid="mmc1" ref-type="supplementary-material">S2</xref>
, and
<xref rid="mmc1" ref-type="supplementary-material">S3</xref>
.</p>
</caption>
<graphic xlink:href="gr1"></graphic>
</fig>
<fig id="fig2">
<label>Figure 2</label>
<caption>
<p>Antagonistic CD4
<sup>+</sup>
CTL and Tfh Development</p>
<p>(A)
<italic>Cd4</italic>
and
<italic>Gzmb</italic>
expression, assessed by single-cell RNA sequencing, in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Each symbol shows the log
<sub>2</sub>
-transformed normalized reads from an individual cell from one of two experiments. Numbers within the plots denote the number of cells positive for expression of the indicated gene.</p>
<p>(B)
<italic>Tcf7</italic>
and
<italic>Bcl6</italic>
expression in the same cells as in (A).</p>
<p>(C) Expression of
<italic>Tcf7</italic>
and
<italic>Bcl6</italic>
, relative to
<italic>Hprt</italic>
, assessed by qRT-PCR in bulk env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Plotted are the mean values (±SEM) of four technical replicates from two experiments with four mice per group per experiment.</p>
<p>(D) Heatmap of gene expression, assessed by single-cell RNA sequencing, comparing
<italic>Gzmb</italic>
<sup>
<italic>+</italic>
</sup>
and
<italic>Gzmb</italic>
<sup></sup>
subsets in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and priming. CD4
<sup>+</sup>
T cells from both FV infection and Ad5.pIX-gp70 immunization are included. A select set of genes from the complete list in
<xref rid="mmc2" ref-type="supplementary-material">Table S1</xref>
is shown.</p>
<p>(E) Flow-cytometric correlation of intracellular GzmB and surface markers CXCR6, CD39, CD150, and CD226 (left) and frequency of surface marker
<sup>+</sup>
cells separately in GzmB
<sup></sup>
and GzmB
<sup>+</sup>
cells within env-reactive (CD44
<sup>+</sup>
) donor EF4.1 CD4
<sup>+</sup>
T cells (right) in the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization. In the scatterplots, each symbol represents an individual recipient.</p>
<p>(F) Expression of
<italic>Prdm1</italic>
,
<italic>Bcl6</italic>
,
<italic>Lef1</italic>
,
<italic>Tcf7</italic>
,
<italic>Zbtb7b</italic>
, and
<italic>Runx3</italic>
assessed by single-cell RNA sequencing, separately in
<italic>Gzmb</italic>
<sup>
<italic>+</italic>
</sup>
and
<italic>Gzmb</italic>
<sup>
<italic></italic>
</sup>
env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization.</p>
<p>See also
<xref rid="mmc1" ref-type="supplementary-material">Figures S4</xref>
,
<xref rid="mmc1" ref-type="supplementary-material">S5</xref>
, and
<xref rid="mmc1" ref-type="supplementary-material">S6</xref>
and
<xref rid="mmc2" ref-type="supplementary-material">Table S1</xref>
.</p>
</caption>
<graphic xlink:href="gr2"></graphic>
</fig>
<fig id="fig3">
<label>Figure 3</label>
<caption>
<p>Bcl6 Suppresses CD4
<sup>+</sup>
CTL Development at the Population Level</p>
<p>(A) Delineation of env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells according to YFP expression. Histograms show gated env-reactive EF4.1 CD4
<sup>+</sup>
T cells from
<italic>Bcl6</italic>
<sup>wt</sup>
or
<italic>Bcl6</italic>
<sup>fl</sup>
donors, found in the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. YFP expression reports activation of the
<italic>Tnfrsf4</italic>
gene and, in the case of
<italic>Bcl6</italic>
<sup>fl</sup>
donor CD4
<sup>+</sup>
T cells, also loss of
<italic>Bcl6</italic>
. Numbers within the plots denote the proportion of YFP
<sup>+</sup>
cells.</p>
<p>(B) Expression of the indicated gene, relative to
<italic>Hprt</italic>
, assessed by qRT-PCR in the respective bulk subset of env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells shown immediately above in (A). Plotted are the mean values (±SEM) of two technical replicates, from two experiments with five mice per group per experiment.</p>
<p>See also
<xref rid="mmc1" ref-type="supplementary-material">Figures S7</xref>
,
<xref rid="mmc1" ref-type="supplementary-material">S8</xref>
, and
<xref rid="mmc1" ref-type="supplementary-material">S9</xref>
.</p>
</caption>
<graphic xlink:href="gr3"></graphic>
</fig>
<fig id="fig4">
<label>Figure 4</label>
<caption>
<p>Bcl6 Suppresses CD4
<sup>+</sup>
CTL Development at the Single-Cell Level</p>
<p>(A) Frequency of intracellular GzmB
<sup>+</sup>
cells in bulk
<italic>Bcl6</italic>
<sup>wt</sup>
or
<italic>Bcl6</italic>
<sup>fl</sup>
env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells in the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Each symbol represents an individual mouse from one representative of two experiments.</p>
<p>(B)
<italic>Cd4</italic>
and
<italic>Gzmb</italic>
expression, assessed by single-cell RNA sequencing, in YFP
<sup>+</sup>
<italic>Bcl6</italic>
<sup>fl</sup>
env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization.</p>
<p>(C)
<italic>Il21</italic>
,
<italic>Il10</italic>
, and
<italic>Ifng</italic>
expression, assessed by single-cell RNA sequencing, in YFP
<sup>+</sup>
<italic>Bcl6</italic>
<sup>wt</sup>
, and
<italic>Bcl6</italic>
<sup>fl</sup>
env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization.</p>
</caption>
<graphic xlink:href="gr4"></graphic>
</fig>
<fig id="fig5">
<label>Figure 5</label>
<caption>
<p>CD4
<sup>+</sup>
CTL and Th1 Cells Are Transcriptionally Distinct</p>
<p>(A)
<italic>Gzmb</italic>
and
<italic>Ifng</italic>
expression, assessed by single-cell RNA sequencing, in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and priming. Both
<italic>Bcl6</italic>
<sup>wt</sup>
and
<italic>Bcl6</italic>
<sup>fl</sup>
CD4
<sup>+</sup>
T cells from both FV infection and Ad5.pIX-gp70 immunization are included.</p>
<p>(B) Flow-cytometric detection of intracellular GzmB and IFN-γ in host naive (CD44
<sup></sup>
) or env-reactive (CD44
<sup>+</sup>
) donor EF4.1 CD4
<sup>+</sup>
T cells in the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization. The plot is representative of four recipients.</p>
<p>(C) Flow-cytometric correlation of intracellular GzmB and surface CD150 expression (left) and frequency of CD150
<sup>+</sup>
cells separately in GzmB
<sup></sup>
and GzmB
<sup>+</sup>
cells within IFN-γ
<sup>+</sup>
env-reactive (CD44
<sup>+</sup>
) donor EF4.1 CD4
<sup>+</sup>
T cells (right) in the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization. In the scatterplot, each symbol represents an individual recipient.</p>
<p>(D) Heatmap of significantly (p = 3.95 × 10
<sup>−4</sup>
) regulated gene expression, assessed by single-cell RNA sequencing, comparing
<italic>Ifng</italic>
<sup>
<italic>+</italic>
</sup>
<italic>Gzmb</italic>
<sup>+</sup>
and
<italic>Ifng</italic>
<sup>
<italic>+</italic>
</sup>
<italic>Gzmb</italic>
<sup></sup>
subsets in the same cells as in (A).</p>
<p>(E)
<italic>Prdm1</italic>
and
<italic>Tcf7</italic>
expression, assessed by single-cell RNA sequencing, in the same cells as in (A).</p>
<p>(F) Flow-cytometric detection of Blimp1-GFP and CD44 expression in host and env-reactive donor CD4
<sup>+</sup>
T cells in the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization.</p>
<p>(G) Expression of
<italic>Prdm1</italic>
,
<italic>Tcf7</italic>
, and
<italic>Gzmb</italic>
, relative to
<italic>Hprt</italic>
, assessed by qRT-PCR in bulk Blimp1-GFP
<sup>+</sup>
and Blimp1-GFP
<sup>-</sup>
subsets in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and Ad5.pIX-gp70 immunization. Plotted are the mean values (±SEM) of two technical replicates from one experiment with five mice per group.</p>
<p>See also
<xref rid="mmc1" ref-type="supplementary-material">Figures S10</xref>
and
<xref rid="mmc1" ref-type="supplementary-material">S11</xref>
.</p>
</caption>
<graphic xlink:href="gr5"></graphic>
</fig>
<fig id="fig6">
<label>Figure 6</label>
<caption>
<p>Layered Checkpoints in CD4
<sup>+</sup>
CTL Development</p>
<p>(A)
<italic>Pcdc1</italic>
,
<italic>Lag3</italic>
,
<italic>Ctla4</italic>
, and
<italic>Havcr2</italic>
expression, assessed by single-cell RNA sequencing, in env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells purified from the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Both
<italic>Bcl6</italic>
<sup>wt</sup>
and
<italic>Bcl6</italic>
<sup>fl</sup>
CD4
<sup>+</sup>
T cells are included.</p>
<p>(B) Flow-cytometric detection of PD-1 and LAG3 expression in host naive (CD44
<sup></sup>
) and env-reactive (CD44
<sup>+</sup>
) donor CD4
<sup>+</sup>
T cells in the spleens of recipient mice, 7 days after adoptive transfer and FV infection or Ad5.pIX-gp70 immunization. Numbers within the plots denote the proportion of PD-1
<sup>+</sup>
and LAG3
<sup>+</sup>
cells in env-reactive donor CD4
<sup>+</sup>
T cells only.</p>
<p>(C) Median fluorescence intensity (MFI) of PD-1 and LAG3 staining in the same cells as in (B). Each symbol represents an individual recipient. The dashed line represents the MFI of PD-1 and LAG3 staining in host naive CD4
<sup>+</sup>
T cells.</p>
<p>(D) Frequency of intracellular GzmB
<sup>+</sup>
cells in bulk
<italic>Bcl6</italic>
<sup>wt</sup>
and
<italic>Bcl6</italic>
<sup>fl</sup>
env-reactive donor EF4.1 CD4
<sup>+</sup>
T cells in the spleens of either WT or B cell-deficient
<italic>Ighm</italic>
<sup>−/−</sup>
recipient mice, 7 days after adoptive transfer and FV infection. The indicated groups additionally received treatment with PD-1- and LAG3-blocking antibodies. Each symbol represents an individual recipient.</p>
<p>See also
<xref rid="mmc1" ref-type="supplementary-material">Figures S12</xref>
,
<xref rid="mmc1" ref-type="supplementary-material">S13</xref>
,
<xref rid="mmc1" ref-type="supplementary-material">S14</xref>
, and
<xref rid="mmc1" ref-type="supplementary-material">S15</xref>
.</p>
</caption>
<graphic xlink:href="gr6"></graphic>
</fig>
</floats-group>
</pmc>
<affiliations>
<list>
<country>
<li>Allemagne</li>
<li>Australie</li>
<li>France</li>
<li>Royaume-Uni</li>
</country>
<region>
<li>Provence-Alpes-Côte d'Azur</li>
</region>
<settlement>
<li>Marseille</li>
</settlement>
</list>
<tree>
<country name="Royaume-Uni">
<noRegion>
<name sortKey="Donnarumma, Tiziano" sort="Donnarumma, Tiziano" uniqKey="Donnarumma T" first="Tiziano" last="Donnarumma">Tiziano Donnarumma</name>
</noRegion>
<name sortKey="Eksmond, Urszula" sort="Eksmond, Urszula" uniqKey="Eksmond U" first="Urszula" last="Eksmond">Urszula Eksmond</name>
<name sortKey="Kassiotis, George" sort="Kassiotis, George" uniqKey="Kassiotis G" first="George" last="Kassiotis">George Kassiotis</name>
<name sortKey="Kassiotis, George" sort="Kassiotis, George" uniqKey="Kassiotis G" first="George" last="Kassiotis">George Kassiotis</name>
<name sortKey="Merkenschlager, Julia" sort="Merkenschlager, Julia" uniqKey="Merkenschlager J" first="Julia" last="Merkenschlager">Julia Merkenschlager</name>
<name sortKey="Young, George R" sort="Young, George R" uniqKey="Young G" first="George R." last="Young">George R. Young</name>
<name sortKey="Young, George R" sort="Young, George R" uniqKey="Young G" first="George R." last="Young">George R. Young</name>
</country>
<country name="Allemagne">
<noRegion>
<name sortKey="Bongard, Nadine" sort="Bongard, Nadine" uniqKey="Bongard N" first="Nadine" last="Bongard">Nadine Bongard</name>
</noRegion>
<name sortKey="Bayer, Wibke" sort="Bayer, Wibke" uniqKey="Bayer W" first="Wibke" last="Bayer">Wibke Bayer</name>
<name sortKey="Dittmer, Ulf" sort="Dittmer, Ulf" uniqKey="Dittmer U" first="Ulf" last="Dittmer">Ulf Dittmer</name>
<name sortKey="Le Trilling, Vu Thuy Khanh" sort="Le Trilling, Vu Thuy Khanh" uniqKey="Le Trilling V" first="Vu Thuy Khanh" last="Le-Trilling">Vu Thuy Khanh Le-Trilling</name>
<name sortKey="Trilling, Mirko" sort="Trilling, Mirko" uniqKey="Trilling M" first="Mirko" last="Trilling">Mirko Trilling</name>
</country>
<country name="Australie">
<noRegion>
<name sortKey="Nutt, Stephen L" sort="Nutt, Stephen L" uniqKey="Nutt S" first="Stephen L." last="Nutt">Stephen L. Nutt</name>
</noRegion>
</country>
<country name="France">
<region name="Provence-Alpes-Côte d'Azur">
<name sortKey="Boyer, Claude" sort="Boyer, Claude" uniqKey="Boyer C" first="Claude" last="Boyer">Claude Boyer</name>
</region>
</country>
</tree>
</affiliations>
</record>

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