LncRNA SNHG3 sponges miR-577 to up-regulate SMURF1 expression in prostate cancer.

Prostate cancer remains one of the most prevalent cancers and the main causes of cancer-related deaths in males. Various articles introduced that long noncoding RNAs (lncRNAs) are found in vital functions in the development and progression of cancers. Although SNHG3 (small nucleolar RNA host gene 3) has been investigated in many cancers, now researches on the role and mechanism of SNHG3 in prostate cancer are lacked. In this work, SNHG3 exerted high expression in prostate cancer cell lines. Suppression of SNHG3 inhibited cell proliferation, migration, EMT (epithelial-mesenchymal transition) process and promoted cell apoptosis. Additionally, it was found that SNHG3 could bind with miR-577. Subsequently, SMURF1 (Smad ubiquitination regulatory factor 1) was identified as a downstream target of miR-577 and had a negative correlation with miR-577. SNHG3 was found to positively regulate SMURF1 expression. Furthermore, rescue assays demonstrated that co-transfection of pcDNA3.1/SMURF1 reversed the effects of SNHG3 knockdown in cell proliferation, migration, EMT process and cell apoptosis. SNHG3 also promoted tumorigenesis in vivo. All the results above explained that SNHG3 accelerated prostate cancer progression by sponging miR-577 to up-regulate SMURF1 expression, suggesting that SNHG3 may act as a biomarker for prostate cancer patients.

Li T ，Xing Y ，Yang F ，Sun Y ，Zhang S ，Wang Q ，Zhang W ... -  《Cancer Medicine》

LncRNA SNHG3 promotes bladder cancer proliferation and metastasis through miR-515-5p/GINS2 axis.

Growing evidence suggests that long non-coding RNAs (lncRNAs) are associated with carcinogenesis. LncRNA small nucleolar RNA host gene 3 (SNHG3) is up-regulated in various cancers and positively associated with poor prognosis of these cancers. However, the precise role of lncRNA SNHG3 in bladder cancer (Bca) remains unclear. In our research, we first reported that lncRNA SNHG3 was up-regulated in bladder cancer tissues and positively related to poor clinical prognosis. Moreover, knockdown of lncRNA SNHG3 significantly suppressed the proliferation, migration, invasion and EMT process of Bca cells in vitro and vivo. Mechanistically, we revealed that suppression of SNHG3 evidently enhanced miR-515-5p expression and decreased GINS2 expression at posttranscriptional levels. Moreover, SNHG3 positively regulated GINS2 expression by sponging miR-515-5p under a competing endogenous RNA (ceRNA) mechanism. To sum up, our study suggested lncRNA SNHG3 acted as a microRNA sponge and an oncogenic role in the progression of bladder cancer.

Dai G ，Huang C ，Yang J ，Jin L ，Fu K ，Yuan F ，Zhu J ，Xue B ... -  《-》

LncRNA SNHG3 Promotes Proliferation and Metastasis of Non-Small-Cell Lung Cancer Cells Through miR-515-5p/SUMO2 Axis.

Li Y ，Gao L ，Zhang C ，Meng J ... -  《-》

Long Noncoding RNA Small Nucleolar RNA Host Gene 3 Mediates Prostate Cancer Migration, Invasion, and Epithelial-Mesenchymal Transition by Sponging miR-487a-3p to Regulate TRIM25.

Yu L ，Ren Y 《-》

IMP3 accelerates the progression of prostate cancer through inhibiting PTEN expression in a SMURF1-dependent way.

Zhang X ，Wang D ，Liu B ，Jin X ，Wang X ，Pan J ，Tu W ，Shao Y ... -  《JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH》