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2016 ; 12
(3
): 1693-1700
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Epigenetic modification suppresses proliferation, migration and invasion of
urothelial cancer cell lines
#MMPMID27602104
Brockmeyer P
; Hemmerlein B
Oncol Lett
2016[Sep]; 12
(3
): 1693-1700
PMID27602104
show ga
Epigenetic approaches offer additional therapeutic options, including apoptosis
induction, modification of cell cycle regulating proteins and the re-expression
of pharmaceutical targets, such as hormone receptors. The present study analyzed
the effect of the epigenetic modifiers 5-aza-2'-deoxycytidine and Trichostatin A
on the proliferative, migratory and invasive behavior of four urinary bladder
cancer cell lines (RT-4, RT-112, VMCUB-1 and T-24), and the expression of various
matrix metalloproteinases (MMPs) and tissue inhibitors of matrix
metalloproteinases (TIMPs). Cell proliferation, migration and invasion assays
revealed that treatment with the two epigenetic modifiers resulted in
proliferation inhibition in all cell lines, and migration and invasion inhibition
in RT-4, RT-112 and T-24 cell lines. Quantitative polymerase chain reaction
demonstrated that the mRNA expression of a broad selection of MMPs and their
TIMPs was induced in all cell lines, and MMP-14 mRNA expression was suppressed in
all cell lines, with the exception of RT-4. In conclusion, epigenetic
modifications suppressed the motility and invasiveness of three out of four
urothelial cancer cell lines. The inhibitory effect on cell motility appears to
be crucial for reduced invasive properties. However, even a broad spectrum of
mRNA analysis does not sufficiently explain the loss of invasiveness, as it does
not allow for functional conclusions. Further complex urothelial tumour models
should be applied to investigate whether epigenetic therapeutic approaches may be
an option in urothelial cancer.