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@INPROCEEDINGS{Unverricht:841279,
author = {Unverricht, Marcus and Busch, Nicole and Kriehuber, Ralf},
title = {{HIGH} {EXPRESSION} {LEVELS} {OF} {SURVIVIN} {PROTEIN}
{DOES} {NOT} {ABOLISH} {UV}-{INDUCED} {APOPTOSIS} {IN}
{SCL}-{II} {CELLS}},
reportid = {FZJ-2017-08371},
year = {2008},
abstract = {Survivin is a member of the inhibitors of apoptosis and has
been implicated in both the regulation of cell division and
the suppression of apoptosis. Whereas over-expression of
survivin correlates with an unfavourable prognosis in many
malignant tumours, siRNA against survivin causes a reduction
of cell proliferation, the induction of apoptosis and an
enhanced radiosensitivity of squamous cell carcinoma cell
lines and other tumour cell lines. The apoptotic response
and the survivin protein expression levels in the squamous
cell carcinoma derived SCL-II cell line were analyzed after
exposure to ionizing radiation (IR) and UV radiation.
Apoptosis was assessed by PARP cleavage and by flow
cytometry (Annexin V-FITC/ PI assay). SCL-II showed a low
induction of apoptosis after exposure to IR but a strong
apoptotic response after exposure to UV $(25\%$ apoptotic
cells 5 h after UV), which correlated with PARP cleavage and
characteristic changes in cell morphology like membrane
blebbing and formation of apoptotic bodies. Cell cycle
analysis revealed that exposure to UV, but not IR, induced a
G1 checkpoint arrest in SCL-II cells.There was no change in
survivin protein expression after exposure to IR and UV
compared to controls. One of the used survivin antibodies
detected a subband (28 kDa) which correlated with the
apoptotic state of SCL-II cells.Conclusions: Survivin
expression does not interfere with apoptosis induction in
SCL-II cells. UV triggeres apoptosis in SCL-II cells is not
abolished by a high expression level of survivin. Apoptosis
in SCL-II cells seems to be associated with cell cycle
perturbations.},
month = {Oct},
date = {2008-10-06},
organization = {11th Annual Meeting of the German
Society for Biological Radiation
Research, Tübingen (Germany), 6 Oct
2008 - 8 Oct 2008},
subtyp = {After Call},
cin = {S-US},
cid = {I:(DE-Juel1)S-US-20090406},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/841279},
}