4 research outputs found
ALKBH overexpression in head and neck cancer: potential target for novel anticancer therapy
The nine identified human homologues of E. coli AlkB 2-oxoglutarate (2OG) and Fe(II)-dependent dioxygenase, ALKBH1-8 and FTO, display different substrate specificities and diverse biological functions. Here we discovered the combined overexpression of members of the ALKBH family in head and neck squamous cell carcinomas (HNSCC). We found direct correlation of ALKBH3 and FTO expression with primary HNSCC tumor size. We observed unidentified thus far cytoplasmic localization of ALKBH2 and 5 in HNSCC, suggesting abnormal role(s) of ALKBH proteins in cancer. Further, high expression of ALKBHs was observed not only in HNSCC, but also in several cancerous cell lines and silencing ALKBH expression in HeLa cancer cells resulted in dramatically decreased survival. considering the discovered impact of high expression of ALKBH proteins on HNSCC development, we screened for ALKBH blockers among newly synthetized anthraquinone derivatives and demonstrated their potential to support standard anticancer therapy
The expression of MMP-14 and microRNA-410 in FFPE tissues of human endometrial adenocarcinoma
Endometrial cancer (EC) is the most
common gynecological malignancy in Europe and North
America. It is classified into two types exhibiting
different characteristics and prognosis. Type I is an
estrogen-dependent tumor, histologically classified as
low grade and low stage, usually with an excellent
prognosis. Type II EC is unrelated to estrogen
stimulation and is characterized by a poor prognosis.
MicroRNAs (miRNAs, miRs) are small non-coding
RNA polynucleotides that regulate gene expression posttranscriptionally. Various dysregulations in microRNA
expression are often considered to have an impact on the
diagnosis, prognosis and overall survival in patients
diagnosed with different types of cancers. Recent data
suggest that microRNAs play an important role in the
pathogenesis of EC.
The aim of the study was to evaluate the
involvement of matrix metaloprotease 14 (MMP-14) and
microRNA-410 in formation of the EC tumor. To this
end expression of MMP-14 and microRNA-410 was
assessed within the cancer, transient and healthy zones in
the histological sections of tumours using immunohistochemical staining and laser capture microdissection
(LCM) followed by a quantitative real-time PCR. The
results revealed significantly higher expression of MMP14 in the cancer tissue zone in comparison to the healthy
tissue zone, as well as a lower expression of microRNA410 in the cancer zone compared with the healthy zone.
This reverse correlation may suggest a regulatory role of
miRNA-410 in modulating levels of MMP-14 in EC.
This is the first report on such regulation in human
endometrial cancer