Heat shock transcription factor 1 promotes the proliferation, migration and invasion of osteosarcoma cells.

Abstract:

OBJECTIVES:Osteosarcoma is the most commonly diagnosed primary malignancy of bone and its overall survival rate is still very low. The molecular mechanisms underlying the progression of osteosarcoma have not been clearly illuminated. Heat shock transcription factor 1 (HSF1) is a key regulator of the heat shock response and also plays important roles in many cancers, but its function in osteosarcoma remains unexplored. MATERIALS AND METHODS:In this study, the proliferation of osteosarcoma cells was determined by Cell Counting Kit-8 assays and colony formation assays. Transwell assays were used to demonstrate the migration and invasion abilities of osteosarcoma cells. A tumour formation assay in a nude mouse model was performed to assess the effect of HSF1 on osteosarcoma cell growth in vivo. The protein levels of HSF1 were analysed with immunohistochemical staining in samples from osteosarcoma patients. RESULTS:We demonstrated that knockdown of HSF1 reduced the proliferation, migration and invasion of osteosarcoma cells, while overexpression of HSF1 promoted the proliferation, migration and invasion of osteosarcoma cells. Furthermore, HSF1 promoted the proliferation of osteosarcoma cells in vivo. In addition, high levels of HSF1 were associated with a poor prognosis in osteosarcoma. CONCLUSIONS:These data highlight an important role of HSF1 in proliferation, migration and invasion of osteosarcoma cells. Moreover, the expression of HSF1 was associated with prognosis in osteosarcoma.

journal_name

Cell Prolif

journal_title

Cell proliferation

authors

Zhou Z,Li Y,Jia Q,Wang Z,Wang X,Hu J,Xiao J

doi

10.1111/cpr.12346

subject

Has Abstract

pub_date

2017-08-01 00:00:00

issue

4

eissn

0960-7722

issn

1365-2184

journal_volume

50

pub_type

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