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2017 ; 10
(ä): 1389-1402
Nephropedia Template TP
gab.com Text
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English Wikipedia
HMGB1 is negatively correlated with the development of endometrial carcinoma and
prevents cancer cell invasion and metastasis by inhibiting the process of
epithelial-to-mesenchymal transition
#MMPMID28424555
Luan X
; Ma C
; Wang P
; Lou F
Onco Targets Ther
2017[]; 10
(ä): 1389-1402
PMID28424555
show ga
High-mobility group box protein 1 (HMGB1), a nuclear protein that plays a
significant role in DNA architecture and transcription, was correlated with the
progression of some types of cancer. However, the role of HMGB1 in endometrial
cancer cell invasion and metastasis remains unexplored. HMGB1 expression was
initially assessed by immunohistochemistry and reverse transcription-quantitative
polymerase chain reaction (RT-qPCR) in normal endometrial tissue and endometrial
carcinoma tissue. High expressions of HMGB1 protein were detected in normal
endometrial tissues; however, in endometrial cancer tissues, the expressions of
HMGB1 were found to be very weak. Furthermore, HMGB1 expressions were negatively
correlated with advanced stage and lymph node metastasis in endometrial cancer.
Then by RT-qPCR, Western blot and immunocytochemistry, HMGB1 was also detected in
primary cultured endometrial cells and four kinds of endometrial cancer cell
lines (Ishikawa, HEC-1A, HEC-1B and KLE). We found that the expression of HMGB1
was much higher in normal endometrial cells than in endometrial cancer cells, and
reduced expression levels of HMGB1 were observed especially in the highly
metastatic cell lines. Using lentivirus transfection, HMGB1 small hairpin RNA was
constructed, and this infected the lowly invasive endometrial cancer cell lines,
Ishikawa and HEC-1B. HMGB1 knockdown significantly enhanced the proliferation,
invasion and metastasis of endometrial cancer cells and induced the process of
epithelial-to-mesenchymal transition. These results can contribute to the
development of a new potential therapeutic target for endometrial cancer.