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@ARTICLE{Teichert:127608,
author = {M. Teichert$^*$ and C. Stumpf and N. Booken and M. Wobser
and D. Nashan and C. Hallermann and C. Mogler$^*$ and C. S.
L. Müller and J. Becker$^*$ and R. K. C. Moritz and M.
Andrulis and J. P. Nicolay and S. Goerdt and M. Thomas and
C.-D. Klemke and H. Augustin$^*$ and M. Felcht$^*$},
title = {{A}ggressive primary cutaneous {B}-cell lymphomas show
increased {A}ngiopoietin-2-induced angiogenesis.},
journal = {Experimental dermatology},
volume = {24},
number = {6},
issn = {0906-6705},
address = {Oxford},
publisher = {Wiley-Blackwell},
reportid = {DKFZ-2017-03631},
pages = {424 - 429},
year = {2015},
abstract = {Primary cutaneous large B-cell lymphomas, leg type
(PCLBCL/LT) are primary cutaneous B-cell lymphoma (PCBCL)
with an intermediate prognosis. Therefore,
antracycline-based polychemotherapy combined with rituximab
has been recommended as first-line treatment. Yet, despite
this regimen, the 5-year survival rate remains $50-66\%$
only. Angiogenesis, the formation of a vascular network, is
essential for the pathogenesis of nodal lymphomas. So far,
no study has analysed angiogenesis and its key factors in
PCLBCL/LT. The present study was aimed at characterizing
angiogenesis in PCLBCL/LT to identify the angiogenic
molecules as potential therapeutic targets. The
intra-tumoral microvessel density (MVD) was assessed by
immunohistochemical studies of CD20 and CD31. The MVD was
higher in PCLBCL/LT compared with indolent PCBCL. Analyses
of open-source microarray data showed correlation between
the angiogenic molecule angiopoietin-2 (Ang-2) and
pan-endothelial cell markers. ELISA studies determined a
shift between Ang-2 and Ang-1 towards Ang-2 in the
peripheral blood of PCLBCL/LT patients. Immunofluorescence
costainings against the Ang receptor Tie2/angiogenic
integrins/CD34 revealed that the vasculature in both
aggressive and indolent PCBCL tumors harbours an endothelial
cell subpopulation with reduced expression of Tie2. In
contrast, the alternative Ang-2 binding partners, angiogenic
integrins, are strongly expressed in PCBCL. In line with
these findings, downstream targets of Ang-2-integrin
signalling, that is phosphorylation of focal adhesion kinase
at Tyr397, and sprouting angiogenesis are enhanced in
PCLBCL/LT. Our data present Ang-2 as a promising therapeutic
target and anti-angiogenic therapy as a new line in
treatment of PCLBCL/LT as a hitherto intractable disease.},
keywords = {ANGPT2 protein, human (NLM Chemicals) / Angiopoietin-2 (NLM
Chemicals) / Integrins (NLM Chemicals) / Focal Adhesion
Protein-Tyrosine Kinases (NLM Chemicals)},
cin = {A190 / L401 / L101},
ddc = {610},
cid = {I:(DE-He78)A190-20160331 / I:(DE-He78)L401-20160331 /
I:(DE-He78)L101-20160331},
pnm = {311 - Signalling pathways, cell and tumor biology
(POF3-311)},
pid = {G:(DE-HGF)POF3-311},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:25776770},
doi = {10.1111/exd.12688},
url = {https://inrepo02.dkfz.de/record/127608},
}