scholarly journals CircRNA_100395 inhibits cell proliferation and metastasis in ovarian cancer via regulating miR-1228/p53/epithelial-mesenchymal transition (EMT) axis

2020 ◽  
Vol 11 (3) ◽  
pp. 599-609 ◽  
Author(s):  
Xian Li ◽  
Shuihua Lin ◽  
Zhifeng Mo ◽  
Jinxing Jiang ◽  
Haifeng Tang ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Cell Proliferation ◽  
Epithelial Mesenchymal Transition ◽  
Mesenchymal Transition ◽  
Proliferation And Metastasis ◽  
Cell Proliferation And Metastasis

scholarly journals SMARCC1 Suppresses Tumor Progression by Inhibiting the PI3K/AKT Signaling Pathway in Prostate Cancer

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhao-Ming Xiao ◽  
Dao-Jun Lv ◽  
Yu-zhong Yu ◽  
Chong Wang ◽  
Tao Xie ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cell Proliferation ◽  
Signaling Pathway ◽  
Cell Cycle Progression ◽  
Epithelial Mesenchymal Transition ◽  
Mesenchymal Transition ◽  
Proliferation And Metastasis ◽  
Cell Proliferation And Metastasis

BackgroundSWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin subfamily C member 1 (SMARCC1) protein is a potential tumor suppressor in various cancers. However, its role in prostate cancer (PCa) remains controversial. The aim of this study was to determine the biological function of SMARCC1 in PCa and explore the underlying regulatory mechanisms.MethodsThe expression of SMARCC1 was validated in PCa tissues by immunohistochemistry. Meanwhile, function experiments were used to evaluate the regulatory role on cell proliferation and metastasis in PCa cells with SMARCC1 depletion both in vitro and in vivo. The expression levels of relevant proteins were detected by Western blotting.ResultsOur finding showed that SMARCC1 was significantly downregulated in prostate adenocarcinoma, with a higher Gleason score (GS) than that in low GS. The decreased expression of SMARCC1 was significantly correlated with a higher GS and poor prognosis. Additionally, we found that silencing of SMARCC1 dramatically accelerated cell proliferation by promoting cell cycle progression and enhancing cell migration by inducing epithelial mesenchymal transition (EMT). Furthermore, depletion of SMARCC1 facilitated PCa xenograft growth and lung metastasis in murine models. Mechanistically, the loss of SMARCC1 activated the PI3K/AKT pathway in PCa cells.ConclusionSMARCC1 suppresses PCa cell proliferation and metastasis via the PI3K/AKT signaling pathway and is a novel therapeutic target.

scholarly journals Polydatin Inhibits Cell Viability, Migration, and Invasion Through Suppressing the c-Myc Expression in Human Cervical Cancer

2021 ◽  
Vol 9 ◽  
Author(s):  
Longchang Bai ◽  
Yingkang Ma ◽  
Xue Wang ◽  
Qiongni Feng ◽  
Zhining Zhang ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Cell Proliferation ◽  
Epithelial Mesenchymal Transition ◽  
Migration And Invasion ◽  
Protective Effects ◽  
Mesenchymal Transition ◽  
Cyclin E1 ◽  
Proliferation And Metastasis ◽  
Cell Proliferation And Metastasis ◽  
Human Cervical Cancer

Polydatin, an active ingredient from the roots of Polygonum cuspidatum, is considered to have protective effects on the cardiovascular system and liver. In this study, we demonstrated that polydatin has antitumor activity against human cervical cancer. Polydatin efficiently inhibited cervical cancer cell proliferation by regulating cell cycle-related proteins including p21, p27, CDK2, CDK4, Cyclin D1, and Cyclin E1. Furthermore, polydatin suppressed cell invasion and migration by regulating epithelial–mesenchymal transition (EMT) markers, including E-cadherin, N-cadherin, Snail and Slug. The c-Myc, as a proto-oncogene, is considered to be closely associated with the proliferation and metastasis of tumor cells. After polydatin treatment, the protein expression of c-Myc showed a significant decrease. Based on these data, we overexpressed c-Myc in cervical cancer cells and observed that the overexpression of c-Myc rescued the inhibitory effect of polydatin on cell proliferation and metastasis. These results indicated that polydatin can inhibit cell proliferation and metastasis through suppressing the c-Myc expression in human cervical cancer.

scholarly journals SPOCK1 promotes breast cancer progression via interacting with SIX1 and activating AKT/mTOR signaling pathway

2019 ◽  
Author(s):  
Ming Xu ◽  
Xianglan Zhang ◽  
Songnan Zhang ◽  
Junjie Piao ◽  
Yang Yang ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Cancer Progression ◽  
Epithelial Mesenchymal Transition ◽  
Histological Grade ◽  
Mtor Pathway ◽  
Clinical Prognosis ◽  
Mesenchymal Transition ◽  
Proliferation And Metastasis ◽  
Cell Proliferation And Metastasis

ABSTRACTSPOCK1 is highly expressed in many types of cancer, which has been recognized as a promoter of cancer progression, while its regulatory mechanism remains to be clear in breast cancer (BC). This study aimed to explore the precise function of SPOCK1 in BC progression and the mechanism by which SPOCK1 was involved in cell proliferation and epithelial-mesenchymal transition (EMT). Immunohistochemistry (IHC) and database analysis displayed that high expression of SPOCK1 was positively associated with histological grade, lymph node metastasis (LN) and poor clinical prognosis in BC. A series of assays both in vitro and in vivo elucidated that altering SPOCK1 level led to distinctly changes in BC cell proliferation and metastasis. Investigations of potential mechanisms revealed that SPOCK1 interacted with SIX1 could enhance cell proliferation, cell cycle and EMT process by activating the AKT/mTOR pathway, whereas inhibition of AKT/mTOR pathway or depletion of SIX1 reversed the effects of SPOCK1 overexpression. Furthermore, SPOCK1 and SIX1 were highly expressed in BC and might indicate poor prognoses. Altogether, SPOCK1/SIX1 promoted BC progression by activating AKT/mTOR pathway to accelerate cell proliferation and metastasis in BC, and SPOCK1/SIX1 might be promising clinical therapeutic targets to prevent BC progression.IMPORTANCEThe incidence of BC is alarmingly high and many patients initially diagnosed without detectable metastases will eventually develop metastatic lesions. The occurrence of metastasis is responsible for the death of many patients, which also represents a big challenge for researchers to improve the survival rates of BC patients. Hence the scientific community pays more attention on cancer targeted therapy. This research is significant for identifying the underlying mechanisms and capabilities of SPOCK1-induced BC activities, which will greatly apply novel targets and new treatment strategies for clinicians, leading to broader biomedical impacts.

scholarly journals MiR-1-3p Suppresses Colorectal Cancer Cell Proliferation and Metastasis by Inhibiting YWHAZ-Mediated Epithelial–Mesenchymal Transition

2021 ◽  
Vol 11 ◽  
Author(s):  
Guanghong Du ◽  
Xuelian Yu ◽  
Yun Chen ◽  
Wangting Cai
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Cancer Cell ◽  
Epithelial Mesenchymal Transition ◽  
Colorectal Cancer Cell ◽  
Cancer Cell Proliferation ◽  
Mesenchymal Transition ◽  
Proliferation And Metastasis ◽  
Proliferation And Invasion ◽  
Cell Proliferation And Metastasis

BackgroundColorectal cancer (CRC) is regarded as one of the most common malignancies in the world. MiR-1-3p was reported to be a tumor suppressor in CRC. However, the mechanisms have not been fully elucidated.MethodsTo identify CRC-associated miRNA, microarray data set GSE30454 was downloaded from the Gene Expression Omnibus database (GEO), and miR-1-3p was screened out as a candidate. The expression of miR-1-3p was detected using quantitative real-time polymerase chain reaction (qRT-PCR) in CRC cell lines and tissues. CCK-8 assay and transwell invasion assay were performed to determine CRC cell line proliferation and invasion, respectively. The levels of YWHAZ and EMT-associated proteins were detected using western blotting.ResultsBioinformatic analysis showed that miR-1-3p was downregulated in CRC tissues, which is verified by our experimental validation. The overexpression of miR-1-3p significantly suppressed CRC cell proliferation and invasion. Further studies showed that YWHAZ was a direct target of miR-1-3p and mediated epithelial–mesenchymal transition (EMT) modulated by miR-1-3p.ConclusionOur results demonstrated that miR-1-3p suppresses colorectal cancer cell proliferation and metastasis through regulating YWHAZ-mediated EMT, which may support a novel therapeutic strategy for CRC patients.

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