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@ARTICLE{Xydia:167532,
author = {M. Xydia$^*$ and R. Rahbari and E. Ruggiero$^*$ and I.
Macaulay and M. Tarabichi and R. Lohmayer and S.
Wilkening$^*$ and T. Michels and D. Brown and S. Vanuytven
and S. Mastitskaya and S. Laidlaw and N. Grabe and M.
Pritsch$^*$ and R. Fronza$^*$ and K. Hexel$^*$ and S.
Schmitt$^*$ and M. Müller-Steinhardt and N. Halama and C.
Domschke and M. Schmidt$^*$ and C. von Kalle$^*$ and F.
Schütz and T. Voet and P. Beckhove},
title = {{C}ommon clonal origin of conventional {T} cells and
induced regulatory {T} cells in breast cancer patients.},
journal = {Nature Communications},
volume = {12},
number = {1},
issn = {2041-1723},
address = {[London]},
publisher = {Nature Publishing Group UK},
reportid = {DKFZ-2021-00397},
pages = {1119},
year = {2021},
note = {#EA:D015#LA:D015#},
abstract = {Regulatory CD4+ T cells (Treg) prevent tumor clearance by
conventional T cells (Tconv) comprising a major obstacle of
cancer immune-surveillance. Hitherto, the mechanisms of Treg
repertoire formation in human cancers remain largely
unclear. Here, we analyze Treg clonal origin in breast
cancer patients using T-Cell Receptor and single-cell
transcriptome sequencing. While Treg in peripheral blood and
breast tumors are clonally distinct, Tconv clones, including
tumor-antigen reactive effectors (Teff), are detected in
both compartments. Tumor-infiltrating CD4+ cells accumulate
into distinct transcriptome clusters, including early
activated Tconv, uncommitted Teff, Th1 Teff, suppressive
Treg and pro-tumorigenic Treg. Trajectory analysis suggests
early activated Tconv differentiation either into Th1 Teff
or into suppressive and pro-tumorigenic Treg. Importantly,
Tconv, activated Tconv and Treg share highly-expanded clones
contributing up to $65\%$ of intratumoral Treg. Here we show
that Treg in human breast cancer may considerably stem from
antigen-experienced Tconv converting into secondary induced
Treg through intratumoral activation.},
cin = {D015 / W220},
ddc = {500},
cid = {I:(DE-He78)D015-20160331 / I:(DE-He78)W220-20160331},
pnm = {314 - Immunologie und Krebs (POF4-314)},
pid = {G:(DE-HGF)POF4-314},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33602930},
doi = {10.1038/s41467-021-21297-y},
url = {https://inrepo02.dkfz.de/record/167532},
}