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2018 ; 15
(4
): 5959-5965
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Sterol regulatory element-binding protein 1 cooperates with c-Myc to promote
epithelial-mesenchymal transition in colorectal cancer
#MMPMID29556313
Zhai D
; Cui C
; Xie L
; Cai L
; Yu J
Oncol Lett
2018[Apr]; 15
(4
): 5959-5965
PMID29556313
show ga
Metastasis is the primary cause of mortality in colorectal cancer (CRC), the
mechanism of which remains unclear. In the present study, by detecting mRNA
expression using a reverse transcription-quantitative polymerase chain reaction
(qPCR), it was revealed that sterol regulatory element-binding protein 1 (SREBP1)
is highly expressed in CRC. Using a cell wound healing assay and a cell invasion
assay, a novel metastasis-promoting role for SREBP1 in CRC was identified.
Furthermore, snail family transcriptional repressor 1 (SNAIL) was identified as a
key downstream effector of SREBP1 in CRC by the use of small interfering RNA
against SNAIL. Additionally, using co-immunoprecipitation and chromatin
immunoprecipitation-qPCR assays, it was demonstrated that SREBP1 interacts with
c-MYC to enhance the binding of c-MYC to the promoter of the mesenchymal gene,
SNAIL, thereby increasing SNAIL expression and accelerating
epithelial-mesenchymal transition. These results indicated a novel role for
SREBP1 and provide insight into the regulatory mechanisms of the c-Myc oncogene
in CRC, which may function as a potential therapeutic target for CRC treatment.