Circ_0026416 downregulation blocks the development of colorectal cancer through depleting MYO6 expression by enriching miR-545-3p

Abstract Background Emerging evidence reveals that the initiation and development of human cancers, including colorectal cancer (CRC), are associated with the deregulation of circular RNAs (circRNAs). Our study intended to disclose the role of circ_0026416 in the malignant behaviors of CRC. Methods The detection for circ_0026416 expression, miR-545-3p expression, and myosin VI (MYO6) mRNA expression was performed using quantitative real-time PCR (qPCR). CCK-8 assay, colony formation assay, transwell assay, and flow cytometry assay were applied for functional analysis to monitor cell proliferation, migration, invasion, and apoptosis. The protein levels of MYO6 and epithelial mesenchymal-transition (EMT) markers were detected by western blot. Mouse models were used to determine the role of circ_0026416 in vivo. The potential relationship between miR-545-3p and circ_0026416 or MYO6 was verified by dual-luciferase reporter assay and RIP assay. Results The expression of circ_0026416 was increased in CRC tumor tissues and cell lines. Circ_0026416 downregulation inhibited CRC cell proliferation, colony formation, migration, invasion, and EMT but induced cell apoptosis in vitro, and circ_0026416 knockdown also blocked tumor growth in vivo. MiR-545-3p was a target of circ_0026416, and rescue experiments indicated that circ_0026416 knockdown blocked CRC development by enriching miR-545-3p. In addition, miR-545-3p targeted MYO6 and inhibited MYO6 expression. MiR-545-3p enrichment suppressed CRC cell malignant behaviors by sequestering MYO6. Importantly, circ_0026416 knockdown depleted MYO6 expression by enriching miR-545-3p. Conclusion Circ_0026416 downregulation blocked the development of CRC through depleting MYO6 expression by enriching miR-545-3p. Highlights Circ_0026416 downregulation inhibits CRC development in vitro and in vivo. Circ_0026416 regulates the expression of MYO6 by targeting miR-545-3p. Circ_0026416 governs the miR-545-3p/MYO6 axis to regulate CRC progression.

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Sevoflurane inhibits malignant progression of colorectal cancer via hsa_circ_0000231-mediated miR-622

Journal of Biological Research-Thessaloniki ◽

10.1186/s40709-021-00145-6 ◽

2021 ◽

Vol 28 (1) ◽

Author(s):

Jingpeng Wang ◽

Shuyuan Li ◽

Gaofeng Zhang ◽

Huihua Han

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Cell Apoptosis ◽

Volatile Anesthetic ◽

Tumor Formation ◽

Luciferase Reporter ◽

Migration And Invasion ◽

Circular Rnas

Abstract Background Sevoflurane (Sev), a commonly used volatile anesthetic, has been reported to inhibit the process of colorectal cancer (CRC). Circular RNAs (circRNAs) are revealed to participate in the pathogenesis of CRC. This study aims to reveal the mechanism of hsa_circ_0000231 in Sev-mediated CRC progression. Methods The expression of hsa_circ_0000231 and microRNA-622 (miR-622) was detected by quantitative real-time polymerase chain reaction (qRT-PCR). Protein level was determined by western blot analysis. Cell proliferation was investigated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), cell colony formation and DNA content quantitation assays. Cell apoptosis was detected by Annexin V-fluorescein isothiocyanate and propidium iodide double staining and caspase 3 activity assays. Cell migration and invasion were investigated by wound-healing and transwell invasion assays, respectively. The putative relationship between hsa_circ_0000231 and miR-622 was predicted by circular RNA Interactome online database, and identified by dual-luciferase reporter and RNA immunoprecipitation assays. The impacts of hsa_circ_0000231 on Sev-mediated tumor formation in vivo were presented by in vivo assay. Results Hsa_circ_0000231 expression was upregulated, while miR-622 was downregulated in CRC tissues and cells compared with control groups. Sev treatment decreased hsa_circ_0000231 expression, but increased miR-622 expression in CRC cells. Sev treatment suppressed cell proliferation, migration and invasion, and induced cell apoptosis. Hsa_circ_0000231 overexpression restored Sev-mediated CRC progression in vitro. Additionally, hsa_circ_0000231 acted as a sponge of miR-622, and miR-622 inhibitors reversed the impacts of hsa_circ_0000231 silencing on CRC process. Furthermore, Sev treatment inhibited tumor growth by regulating hsa_circ_0000231 in vivo. Conclusion Hsa_circ_0000231 attenuated Sev-aroused repression impacts on CRC development by sponging miR-622. This findings may provide an appropriate anesthetic protocol for CRC sufferers undergoing surgery.

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ORMDL1 is upregulated and associated with favorable outcome in colorectal cancer

10.1101/2020.12.10.420497 ◽

2020 ◽

Author(s):

Qian Wang ◽

Wanjun Liu ◽

Si Chen ◽

Qianxin Luo ◽

Yichen Li ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Colony Formation ◽

Transmembrane Protein ◽

Cohort Analysis ◽

Negative Regulator ◽

Morphologic Change ◽

Mesenchymal Transition

AbstractBackgroundORMDL1 gene encodes a transmembrane protein for endoplasmic reticulum and is known as crucial negative regulator for sphingolipid biogenesis. However, it has been rarely studied in tumor-related context. Therefore, its prognostic value and functional significance in colorectal cancer (CRC) remain to be explored.MethodsTCGA CRC cohort analysis, qRT-PCR, and immunohistochemistry (IHC) were used to examine the ORMDL1 expression level. The association between ORMDL1 expression and various clinical characteristics were analyzed by Chi-square tests. CRC patients’ overall survival (OS) was analyzed by Kaplan-Meier analysis. In vitro and in vivo cell-based assays were performed to explore the role of ORMDL1 in cell proliferation, invasion and migration. Transcriptional changes of cells either with ORMDL1 knockdowned or overexpressed were compared and analyzed.ResultsORMDL1 was upregulated in CRC tissues either in TCGA cohort or in our cohort. Interestingly, its expression was significantly lower in patients with metastasis compared to patients without metastasis, and high expression group had longer OS than low expression group. Knockdown of ORMDL1 expression can promote proliferation, colony formation and invasion, while attenuate migration in CRC cell lines. In opposite, forced overexpression of ORMDL1 reduced cell proliferation, colony formation and invasion, while enhanced cell migration. Epithelial-to-mesenchymal transition (EMT) related genes were enriched among differentially expressed genes when ORMDL1 was knockdowned in cells, which was consistent with morphologic change by microscopy observation. Finally, stable knockdown of ORMDL1 can promote cancer cell proliferation in vivo to some extent.ConclusionORMDL1 is upregulated and may serve as biomarker to predict favourable outcome in colorectal cancer.

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miR-495-3p Depresses Cell Proliferation and Migration By Down-Regulating HMGB1 in Colorectal Cancer

10.21203/rs.3.rs-663678/v1 ◽

2021 ◽

Author(s):

Zhang Jieling ◽

Li Kai ◽

Zheng Huifen ◽

Zhu Yiping

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Luciferase Reporter ◽

Luciferase Reporter Gene ◽

Gene Assay ◽

And Migration ◽

Cancer Tissues

Abstract Background: MicroRNAs play an important role in the genesis and progression of tumors, including colorectal cancer (CRC), which has a high morbidity and mortality rate. In this research, the role of miR-495-3p and HMGB1 in CRC was investigated.Methods: We performed qRT-PCR to detect the expression of miR-495-3p in colorectal cancer tissues and cell lines. Functional experiments such as CCK-8 assay, EDU assay, Transwell assay and apoptosis assay were conducted to explore the effects of miR-495-3p on the proliferation, migration and apoptosis of CRC cells in vitro. Then, the use of database prediction, dual-luciferase reporter gene assay and functional experiments verified the role of miR-495-3p target gene HMGB1 in CRC. Finally, rescue experiments was performed to investigate whether overexpression of HMGB1 could reverse the inhibitory effect of miR-495-3p on CRC cell proliferation in vivo and in vitro.Results: miR-495-3p was down-regulated in colorectal cancer tissues and cell lines, and could inhibit the proliferation and migration of colorectal cancer cells, and promote cell apoptosis. The database prediction and dual-luciferase reporter gene assay showed that HMGB1 was the downstream target gene of miR-495-3p. We finally demonstrated that miR-495-3p inhibited CRC cell proliferation by targeting HMGB1 in vitro and in vivo.Conclusion: Our research shows that miR-495-3p inhibits the progression of colorectal cancer by down-regulating the expression of HMGB1, which indicates that miR-495-3p may become a potential therapeutic target for colorectal cancer.

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hsa_circ_0000231 Promotes Colorectal Cancer Cell Growth Through Upregulation of CCND2 by IGF2BP3/miR-375 Dual Pathway

10.21203/rs.3.rs-47893/v1 ◽

2020 ◽

Author(s):

Wei Zhang ◽

Bo Wang ◽

Yang Yang ◽

Zhen Zhang ◽

Quan Wang ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

In Situ Hybridization ◽

Luciferase Reporter ◽

Circular Rnas ◽

Cancer Cell Growth ◽

Normal Tissues

Abstract Background circular RNAs (circRNAs) recently have been emerged as vital regulators for involvement of initiation and progression of diverse kinds of human cancers. This study aimed to investigate the role of circRNAs in colorectal cancer (CRC). Methods The expression profile of circRNAs in 5 pairs of CRC tissues and adjacent normal tissues were analyzed by Microarray. Quantitative real-time PCR and in situ hybridization and Base Scope Assay were used to determine the level and prognostic values of hsa_circ_0000231. Then, functional experiments in vitro and in vivo were performed to investigate the effects of hsa_circ_0000231 on cell proliferation. Mechanistically, fluorescent in situ hybridization, dual luciferase reporter assay, RNA pull-down and RNA immunoprecipitation experiments were performed to confirm the interaction between hsa_circ_0000231 and IGF2BP3 or has_miR-375. Results hsa_circ_0000231 was evidently up-regulated in CRC primary tissues, which was indicated to poor prognosis of CRC patients. The results demonstrated that hsa_circ_0000231 could promote CRC cell proliferation as well as tumorigenesis in vitro and in vivo. Mechanistic analysis showed that hsa_circ_0000231 might on the one hand act as a ceRNA (competing endogenous RNA) of miR-375 to regulate cyclin D2 (CCND2), and on the other hand bind to IGF2BP3 protein to protect CCND2 from being degraded. Conclusion Our findings suggest that hsa_circ_0000231 facilitated CRC progression by sponging miR-375 or binding to IGF2BP3 to modulate CCND2. This discovery implied that has_circ_0000231 may be a potential new diagnostic and therapeutic biomarker for CRC.

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hsa_circ_0000231 promotes colorectal cancer cell growth through upregulation of CCND2 by IGF2BP3/miR-375 dual pathway

10.21203/rs.3.rs-47893/v2 ◽

2020 ◽

Author(s):

Wei Zhang ◽

Bo Wang ◽

Yang Yang ◽

Zhen Zhang ◽

Quan Wang ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Expression Profiles ◽

Luciferase Reporter ◽

Circular Rnas ◽

Cancer Cell Growth ◽

Normal Tissues

Abstract Background and aim Circular RNAs (circRNAs) have emerged as vital regulators of the initiation and progression of diverse kinds of human cancers. This study aimed to investigate the role of circRNAs in colorectal cancer (CRC). Methods The expression profiles of circRNAs in five pairs of CRC tissues and adjacent normal tissues were analyzed using microarray. Quantitative real-time polymerase chain reaction, in situ hybridization, and BaseScope Assay were used to determine the level and prognostic values of hsa_circ_0000231. Then, in vitro and in vivo functional experiments were performed to investigate the effects of hsa_circ_0000231 on cell proliferation. Mechanistically, fluorescence in situ hybridization, dual-luciferase reporter assay, and RNA pull-down and RNA immunoprecipitation experiments were performed to confirm the interaction between hsa_circ_0000231 and Insulin-like growth factor 2 mRNA-binding protein 3(IGF2BP3) or has_miR-375. Results The expression of hsa_circ_0000231 was upregulated in CRC primary tissues, which indicated poor prognosis of patients with CRC. The results demonstrated that hsa_circ_0000231 could promote CRC cell proliferation as well as tumorigenesis in vitro and in vivo. The mechanistic analysis showed that hsa_circ_0000231 might, on the one hand, act as a competing endogenous RNA of miR-375 to promote cyclin D2 (CCND2) and, on the other hand, bind to the IGF2BP3 protein to prevent CCND2 degradation. Conclusion The findings suggested that hsa_circ_0000231 facilitated CRC progression by sponging miR-375 or binding to IGF2BP3 to modulate CCND2, implying that has_circ_0000231 might be a potential new diagnostic and therapeutic biomarker of CRC.

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EIF4A3-induced circ_0084615 contributes to the progression of colorectal cancer via miR-599/ONECUT2 pathway

Journal of Experimental & Clinical Cancer Research ◽

10.1186/s13046-021-02029-y ◽

2021 ◽

Vol 40 (1) ◽

Author(s):

Zhipeng Jiang ◽

Qinwen Tai ◽

Xiaojun Xie ◽

Zehui Hou ◽

Wei Liu ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Xenograft Model ◽

Tube Formation ◽

Luciferase Reporter ◽

Migration And Invasion ◽

Circular Rnas ◽

Western Blot Assay

Abstract Background Colorectal cancer (CRC) is a common malignant tumor. Circular RNAs (circRNAs) have been reported to take part in the progression of CRC. However, the functions of circ_0084615 in CRC development are still undefined. In this study, we aimed to explore the functions and underlying mechanisms of circ_0084615 in CRC. Methods qRT-PCR, western blot assay and IHC assay were utilized for the levels of circ_0084615, miR-599, ONECUT2 or EIF4A3. 5-ethynyl-2’-deoxyuridine (EdU) assay and colony formation assay were conducted for cell proliferation ability. Wound-healing assay and transwell assay were applied to evaluate cell migration and invasion. Tube formation assay was used to analyze angiogenesis ability. RNA immunoprecipitation (RIP) assay, RNA pull down assay and dual-luciferase reporter assay were used to analyze the relationships of circ_0084615, miR-599, ONECUT2 and EIF4A3. Murine xenograft model assay was employed for the role of circ_0084615 in vivo. Results Circ_0084615 was elevated in CRC tissues and was linked to TNM stages, lymph node metastasis, differentiation and overall survival rate. Circ_0084615 knockdown inhibited CRC cell proliferation, migration, invasion and angiogenesis in vitro and hampered tumorigenesis in vivo. Circ_0084615 sponged miR-599 and miR-599 inhibition reversed circ_0084615 knockdown-mediated effects on CRC cell growth, motility and angiogenesis. ONECUT2 was identified as the target gene of miR-599. ONECUT2 overexpression recovered the effects of miR-599 on CRC malignant behaviors. Additionally, EIF4A3 induced circ_0084615 expression. Conclusions EIF4A3-induced circ_0084615 played an oncogenic role in CRC development via miR-599/ONECUT2 axis.

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Silencing of hsa_circ_0009035 suppresses cervicalprogression and enhances radiosensitivity through miR-889-3p-dependent regulation of HOXB7

Molecular and Cellular Biology ◽

10.1128/mcb.00631-20 ◽

2021 ◽

Author(s):

Xia Zhao ◽

Weilei Dong ◽

Guifang Luo ◽

Jing Xie ◽

Jie Liu ◽

...

Keyword(s):

Cell Proliferation ◽

Tumor Growth ◽

Colony Formation ◽

Cell Counting ◽

Luciferase Reporter ◽

Migration And Invasion ◽

Circular Rnas ◽

The Impact

Circular RNAs (circRNAs), a novel type of endogenous non-coding RNAs, have been identified as critical regulators in human carcinogenesis. Here, we investigated the precise actions of hsa_circ_0009035 in the progression and radioresistance of cervical cancer (CC). The levels of hsa_circ_0009035, microRNA (miR)-889-3p and homeobox B7 (HOXB7) were detected by quantitative real-time polymerase chain reaction (qRT-PCR) or western blot. Ribonuclease R (RNase R) and Actinomycin D assays were used to assess the stability of hsa_circ_0009035. Cell proliferation, cell cycle progression, apoptosis, migration and invasion were gauged by the Cell Counting Kit-8 (CCK-8), flow cytometry and transwell assays, respectively. Cell colony formation and survival were determined by the colony formation assay. Targeted correlations among hsa_circ_0009035, miR-889-3p and HOXB7 were examined by the dual-luciferase reporter, RNA immunoprecipitation (RIP) or RNA pull-down assay. Animal studies were performed to evaluate the impact of hsa_circ_0009035 on tumor growth. We found that hsa_circ_0009035 was highly expressed in CC tissues and cells, and it was associated with the radioresistance of CC patients. Moreover, the silencing of hsa_circ_0009035 inhibited CC cell proliferation, migration, invasion, and enhanced apoptosis and radiosensitivity in vitro and weakened tumor growth in vivo. Mechanistically, hsa_circ_0009035 directly targeted miR-889-3p by binding to miR-889-3p, and hsa_circ_0009035 modulated HOXB7 expression through miR-889-3p. HOXB7 was a functional target of miR-889-3p in regulating CC progression and radioresistance in vitro, and hsa_circ_0009035 modulated CC progression and radioresistance in vitro by miR-889-3p. Our current study first identified hsa_circ_0009035 as an important regulation of CC progression and radioresistance at least in part through targeting the miR-889-3p/HOXB7 axis, highlighting its significance as a potential therapeutic target for CC treatment.

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CircRNA PIP5K1A promotes the progression of glioma through upregulation of the TCF12/PI3K/AKT pathway by sponging miR-515-5p

Cancer Cell International ◽

10.1186/s12935-020-01699-6 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Kebin Zheng ◽

Haipeng Xie ◽

Wensong Wu ◽

Xichao Wen ◽

Zhaomu Zeng ◽

...

Keyword(s):

Cell Proliferation ◽

Glioma Cell ◽

Epithelial Mesenchymal Transition ◽

Luciferase Reporter ◽

Akt Pathway ◽

Circular Rnas ◽

Rt Pcr ◽

Mesenchymal Transition

Abstract Background Increasing studies have revealed that circular RNAs (CircRNAs) make great contributions to regulating tumor progression. Therefore, we intended to explore the expression characteristics, function, and related mechanisms of a novel type of circRNA, PIP5K1A, in glioma. Methods Firstly, reverse transcription-polymerase chain reaction (RT-PCR) was carried out to examine CircPIP5K1A expression in glioma tissues and adjacent normal tissues, and the correlation between CircPIP5K1A level and the clinical-pathological indicators of glioma was analyzed. Then, the CircPIP5K1A expression in various glioma cell lines was detected, and CircPIP5K1A overexpression and knockdown cell models were constructed. Subsequently, cell proliferation and viability were detected by the CCK8 method and BrdU staining. Cell apoptosis was detected by flow cytometry, and cell invasion was examined by Transwell assay. The expression of TCF12, PI3K/AKT pathway apoptotic related proteins (Caspase3, Bax, and Bcl2) and epithelial-mesenchymal transition (EMT) markers (E-cadherin, Vimentin, and N-cadherin) was determined by western blot or RT-PCR. Results The results manifested that CircPIP5K1A was upregulated in glioma tissues (compared with that in normal adjacent tissues), and overexpressed CircPIP5K1A was related to glioma volume and histopathological grade. Functionally, overexpressing CircPIP5K1A notably elevated glioma cell proliferation, invasion, and EMT and inhibited apoptosis both in vivo and in vitro. Besides, CircPIP5K1A upregulated TCF12 and PI3K/AKT activation. Bioinformatics analysis testified that miR-515-5p was a common target of CircPIP5K1A and TCF12, while the dual-luciferase reporter assay and RNA immunoprecipitation (RIP) experiment further confirmed that CircPIP5K1A targeted miR-515-5p, which bound the 3′-untranslated region (UTR) of TCF12. Conclusions Overall, the study illustrated that CircPIP5K1A is a potential prognostic marker in glioma and regulates glioma evolvement by modulating the miR-515-5p-mediated TCF12/PI3K/AKT axis.

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ORMDL1 is Upregulated and Associated With Favorable Outcome in Colorectal Cancer

10.21203/rs.3.rs-174478/v1 ◽

2021 ◽

Author(s):

Qian Wang ◽

Wanjun Liu ◽

Si Chen ◽

Qianxin Luo ◽

Yichen Li ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Colony Formation ◽

Transmembrane Protein ◽

Cohort Analysis ◽

Negative Regulator ◽

Morphologic Change ◽

Mesenchymal Transition

Abstract Background: ORMDL1 gene encodes a transmembrane protein for endoplasmic reticulum and is known as crucial negative regulator for sphingolipid biogenesis. However, it has been rarely studied in tumor-related context. Therefore, its prognostic value and functional significance in colorectal cancer (CRC) remain to be explored.Methods: TCGA CRC cohort analysis, qRT-PCR, and immunohistochemistry (IHC) were used to examine the ORMDL1 expression level. The association between ORMDL1 expression and various clinical characteristics were analyzed by Chi-square tests. CRC patients’ overall survival (OS) was analyzed by Kaplan-Meier analysis. In vitro and in vivo cell-based assays were performed to explore the role of ORMDL1 in cell proliferation, invasion and migration. Transcriptional changes of cells either with ORMDL1 knockdowned or overexpressed were compared and analyzed.Results: ORMDL1 was upregulated in CRC tissues either in TCGA cohort or in our cohort. Interestingly, its expression was significantly lower in patients with metastasis compared to patients without metastasis, and high expression group had longer OS than low expression group. Knockdown of ORMDL1 expression can promote proliferation, colony formation and invasion, while attenuate migration in CRC cell lines. In opposite, forced overexpression of ORMDL1 reduced cell proliferation, colony formation and invasion, while enhanced cell migration. Epithelial-to-mesenchymal transition (EMT)-like morphologic change was induced when ORMDL1 was knockdowned. Finally, stable knockdown of ORMDL1 can promote cancer cell proliferation in vivo to some extent. Conclusion: ORMDL1 is upregulated and may serve as biomarker to predict favourable outcome in colorectal cancer.

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hsa_circ_0000231 promotes colorectal cancer cell growth through upregulation of CCND2 by IGF2BP3/miR-375 dual pathway

10.21203/rs.3.rs-47893/v3 ◽

2020 ◽

Author(s):

Wei Zhang ◽

Bo Wang ◽

Yang Yang ◽

Zhen Zhang ◽

Quan Wang ◽

...

Keyword(s):

Colorectal Cancer ◽

Cell Proliferation ◽

Expression Profiles ◽

Luciferase Reporter ◽

Circular Rnas ◽

Cancer Cell Growth ◽

Normal Tissues

Abstract Background and aim Circular RNAs (circRNAs) have emerged as vital regulators of the initiation and progression of diverse kinds of human cancers. This study aimed to investigate the role of circRNAs in colorectal cancer (CRC).Methods The expression profiles of circRNAs in five pairs of CRC tissues and adjacent normal tissues were analyzed using microarray. Quantitative real-time polymerase chain reaction, in situ hybridization, and BaseScope Assay were used to determine the level and prognostic values of hsa_circ_0000231. Then, in vitro and in vivo functional experiments were performed to investigate the effects of hsa_circ_0000231 on cell proliferation. Mechanistically, fluorescence in situ hybridization, dual-luciferase reporter assay, and RNA pull-down and RNA immunoprecipitation experiments were performed to confirm the interaction between hsa_circ_0000231 and Insulin-like growth factor 2 mRNA-binding protein 3(IGF2BP3) or has_miR-375. Results The expression of hsa_circ_0000231 was upregulated in CRC primary tissues, which indicated poor prognosis of patients with CRC. The results demonstrated that hsa_circ_0000231 could promote CRC cell proliferation as well as tumorigenesis in vitro and in vivo. The mechanistic analysis showed that hsa_circ_0000231 might, on the one hand, act as a competing endogenous RNA of miR-375 to promote cyclin D2 (CCND2) and, on the other hand, bind to the IGF2BP3 protein to prevent CCND2 degradation. Conclusion The findings suggested that hsa_circ_0000231 facilitated CRC progression by sponging miR-375 or binding to IGF2BP3 to modulate CCND2, implying that has_circ_0000231 might be a potential new diagnostic and therapeutic biomarker of CRC.

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