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@ARTICLE{Yang:182311,
author = {D. Yang$^*$ and T. D. Strobel$^*$ and J. Bulkescher$^*$ and
C. Tessmer$^*$ and I. Hofmann$^*$ and F. Hoppe-Seyler$^*$
and K. Hoppe-Seyler$^*$},
title = {{FAM}57{A} ({F}amily with {S}equence {S}imilarity 57
{M}ember {A}) {I}s a {C}ell-{D}ensity-{R}egulated {P}rotein
and {P}romotes the {P}roliferation and {M}igration of
{C}ervical {C}ancer {C}ells.},
journal = {Cells},
volume = {11},
number = {20},
issn = {2073-4409},
address = {Basel},
publisher = {MDPI},
reportid = {DKFZ-2022-02568},
pages = {3309},
year = {2022},
note = {#EA:F065#LA:F065#},
abstract = {The FAM57A (family with sequence similarity 57 member A)
gene is controversially discussed to possess pro- or
anti-tumorigenic potential. Here, we analyze the regulation
of cellular FAM57A protein levels and study the functional
role of FAM57A in HPV-positive cervical cancer cells. We
find that FAM57A protein expression strongly depends on cell
density, with FAM57A being readily detectable at low cell
density, but undetectable at high cell density. This
regulation occurs post-transcriptionally and is not mirrored
by corresponding changes at the RNA level. We further show
that FAM57A protein levels are highly increased in cervical
cancer cells cultivated at hypoxia compared to normoxia and
provide evidence that FAM57A is a hypoxia-responsive gene
under control of the α-subunit of the HIF-1
(hypoxia-inducible factor-1) transcription factor. Yet, the
strong relative increase of FAM57A protein levels in hypoxic
cells is predominantly cell-density-dependent and occurs
post-transcriptionally. Other anti-proliferative effectors
besides hypoxia, such as silencing of HPV E6/E7 oncogene
expression in cervical cancer cells, also result in an
increase of FAM57A levels compared to untreated cells.
Functional analyses reveal that FAM57A repression leads to
pronounced anti-proliferative as well as anti-migratory
effects in cervical cancer cells. Taken together, these
results provide insights into the regulation of FAM57A
protein levels and reveal that they underlie a tight
cell-density-dependent control. Moreover, they identify
FAM57A as a critical determinant for the phenotype of
cervical cancer cells, which promotes their proliferation
and migration capacities.},
keywords = {Humans / Female / Uterine Cervical Neoplasms: metabolism /
Oncogene Proteins, Viral: genetics / Oncogene Proteins,
Viral: metabolism / Papillomavirus E7 Proteins: genetics /
Papillomavirus E7 Proteins: metabolism / Papillomavirus
Infections / Repressor Proteins: genetics / Repressor
Proteins: metabolism / Transcription Factors / Cell
Proliferation / Hypoxia / Cell Count / RNA / FAM57A (Other)
/ cervical cancer (Other) / human papillomavirus (HPV)
(Other) / hypoxia (Other) / Oncogene Proteins, Viral (NLM
Chemicals) / Papillomavirus E7 Proteins (NLM Chemicals) /
Repressor Proteins (NLM Chemicals) / Transcription Factors
(NLM Chemicals) / RNA (NLM Chemicals)},
cin = {F065 / W170},
ddc = {570},
cid = {I:(DE-He78)F065-20160331 / I:(DE-He78)W170-20160331},
pnm = {316 - Infektionen, Entzündung und Krebs (POF4-316)},
pid = {G:(DE-HGF)POF4-316},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36291175},
doi = {10.3390/cells11203309},
url = {https://inrepo02.dkfz.de/record/182311},
}