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@ARTICLE{Rabionet:127335,
author = {M. Rabionet$^*$ and A. Bayerle$^*$ and R. Jennemann$^*$ and
H. Heid$^*$ and J. Fuchser and C. Marsching$^*$ and S.
Porubsky and C. Bolenz and F. Guillou and H.-J. Gröne$^*$
and K. Gorgas and R. Sandhoff$^*$},
title = {{M}ale meiotic cytokinesis requires ceramide synthase
3-dependent sphingolipids with unique membrane anchors.},
journal = {Human molecular genetics},
volume = {24},
number = {17},
issn = {1460-2083},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DKFZ-2017-03360},
pages = {4792 - 4808},
year = {2015},
abstract = {Somatic cell cytokinesis was shown to involve the insertion
of sphingolipids (SLs) to midbodies prior to abscission.
Spermatogenic midbodies transform into stable intercellular
bridges (ICBs) connecting clonal daughter cells in a
syncytium. This process requires specialized SL structures.
(1) Using high resolution-mass spectrometric imaging, we
show in situ a biphasic pattern of SL synthesis with
testis-specific anchors. This pattern correlates with and
depends on ceramide synthase 3 (CerS3) localization in both,
pachytene spermatocytes until completion of meiosis and
elongating spermatids. (2) Blocking the pathways to germ
cell-specific ceramides (CerS3-KO) and further to
glycosphingolipids (glucosylceramide synthase-KO) in mice
highlights the need for special SLs for spermatid ICB
stability. In contrast to somatic mitosis these SLs require
ultra-long polyunsaturated anchors with unique
physico-chemical properties, which can only be provided by
CerS3. Loss of these anchors causes enhanced apoptosis
during meiosis, formation of multinuclear giant cells and
spermatogenic arrest. Hence, testis-specific SLs, which we
also link to CerS3 in human testis, are quintessential for
male fertility.},
keywords = {Fatty Acids (NLM Chemicals) / RNA, Messenger (NLM
Chemicals) / Sphingolipids (NLM Chemicals) / LASS3 protein,
mouse (NLM Chemicals) / Sphingosine N-Acyltransferase (NLM
Chemicals)},
cin = {G131 / G130 / A991},
ddc = {570},
cid = {I:(DE-He78)G131-20160331 / I:(DE-He78)G130-20160331 /
I:(DE-He78)A991-20160331},
pnm = {317 - Translational cancer research (POF3-317)},
pid = {G:(DE-HGF)POF3-317},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:26045466},
doi = {10.1093/hmg/ddv204},
url = {https://inrepo02.dkfz.de/record/127335},
}