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CircTCF25 serves as a sponge for miR-206 to support proliferation, migration, and invasion of glioma via the Jak2/p-Stat3/CypB axis
Molecular Carcinogenesis ( IF 3.0 ) Pub Date : 2022-04-05 , DOI: 10.1002/mc.23402
Hang Yin 1 , Hongyu Wang 1 , Maolin Wang 2 , Yunji Yan 1 , Qiang Dong 1 , Qiao Li 1 , Yang Liu 3 , Xiaoqing Wang 3 , Tianxue Guo 1 , Liang Niu 1 , He Zhang 1 , Bo Wang 1 , Xuan Yao 1 , Guoqiang Yuan 3 , Yawen Pan 1, 3
Affiliation  

Glioma is the most common primary malignant intracranial tumor in humans, and glioblastoma (GBM) has been associated with a more aggressive histology and poorer prognosis. There is growing evidence that circular RNAs (circRNAs) are involved in the progression of various malignancies; however, the role and molecular mechanism of circRNAs in glioma remain elusive. In the present study, we screened for differentially expressed circRNAs in gliomas by using a bioinformatics method. Significant upregulation in glioma tissues was verified by quantitative real-time polymerase chain reaction (qRT-PCR), and the prognostic value was evaluated. The potential oncogenic role of circular RNA TCF25 (circTCF25) in glioma was assessed both in vivo and in vitro. Bioinformatics analysis and luciferase reporter assays confirmed the interaction among circTCF25, microRNA-206 (miR-206), and its target gene Cyclophilin B (CypB). circTCF25 was predominantly located in the cytoplasm; the combination of mir-206 and circTCF25 reverses the effects of knockdown of circTCF25 on the proliferation, migration, invasion, and tumorigenesis of glioma cells. Competitive binding between circTCF25 and miR-206 mainly upregulates target gene CypB expression by preventing its inhibition of the Jak2/p-stat3 pathway. In addition, knockdown of circTCF25 reduced CypB expression by inhibiting JAK2/p-stat3, which was rescued by treatment with a miR-206 inhibitor. In summary, our findings demonstrate that the circTCF25/miR-206/CypB axis plays a vital role in glioma progression, migration, invasion, and tumorigenesis.

中文翻译:

CircTCF25 作为 miR-206 的海绵,通过 Jak2/p-Stat3/CypB 轴支持胶质瘤的增殖、迁移和侵袭

胶质瘤是人类最常见的原发性恶性颅内肿瘤,胶质母细胞瘤 (GBM) 与更具侵袭性的组织学和较差的预后有关。越来越多的证据表明环状 RNA (circRNA) 参与了各种恶性肿瘤的进展;然而,circRNA在胶质瘤中的作用和分子机制仍然难以捉摸。在本研究中,我们使用生物信息学方法筛选了胶质瘤中差异表达的 circRNA。通过定量实时聚合酶链反应 (qRT-PCR) 验证了胶质瘤组织中的显着上调,并评估了预后价值。在体内和体外评估了环状 RNA TCF25 (circTCF25) 在胶质瘤中的潜在致癌作用。生物信息学分析和荧光素酶报告基因分析证实了 circTCF25 之间的相互作用,microRNA-206 (miR-206) 及其靶基因 Cyclophilin B (CypB)。circTCF25主要位于细胞质中;mir-206 和 circTCF25 的组合逆转了 circTCF25 敲低对胶质瘤细胞增殖、迁移、侵袭和肿瘤发生的影响。circTCF25 和 miR-206 之间的竞争性结合主要通过阻止其抑制 Jak2/p-stat3 途径来上调靶基因 CypB 的表达。此外,circTCF25 的敲低通过抑制 JAK2/p-stat3 降低了 CypB 的表达,这通过 miR-206 抑制剂的治疗得以挽救。总之,我们的研究结果表明,circTCF25/miR-206/CypB 轴在胶质瘤进展、迁移、侵袭和肿瘤发生中起着至关重要的作用。mir-206 和 circTCF25 的组合逆转了 circTCF25 敲低对胶质瘤细胞增殖、迁移、侵袭和肿瘤发生的影响。circTCF25 和 miR-206 之间的竞争性结合主要通过阻止其抑制 Jak2/p-stat3 途径来上调靶基因 CypB 的表达。此外,circTCF25 的敲低通过抑制 JAK2/p-stat3 降低了 CypB 的表达,这通过 miR-206 抑制剂的治疗得以挽救。总之,我们的研究结果表明,circTCF25/miR-206/CypB 轴在胶质瘤进展、迁移、侵袭和肿瘤发生中起着至关重要的作用。mir-206 和 circTCF25 的组合逆转了 circTCF25 敲低对胶质瘤细胞增殖、迁移、侵袭和肿瘤发生的影响。circTCF25 和 miR-206 之间的竞争性结合主要通过阻止其抑制 Jak2/p-stat3 途径来上调靶基因 CypB 的表达。此外,circTCF25 的敲低通过抑制 JAK2/p-stat3 降低了 CypB 的表达,这通过 miR-206 抑制剂的治疗得以挽救。总之,我们的研究结果表明,circTCF25/miR-206/CypB 轴在胶质瘤进展、迁移、侵袭和肿瘤发生中起着至关重要的作用。circTCF25 和 miR-206 之间的竞争性结合主要通过阻止其抑制 Jak2/p-stat3 途径来上调靶基因 CypB 的表达。此外,circTCF25 的敲低通过抑制 JAK2/p-stat3 降低了 CypB 的表达,这通过 miR-206 抑制剂的治疗得以挽救。总之,我们的研究结果表明,circTCF25/miR-206/CypB 轴在胶质瘤进展、迁移、侵袭和肿瘤发生中起着至关重要的作用。circTCF25 和 miR-206 之间的竞争性结合主要通过阻止其抑制 Jak2/p-stat3 途径来上调靶基因 CypB 的表达。此外,circTCF25 的敲低通过抑制 JAK2/p-stat3 降低了 CypB 的表达,这通过 miR-206 抑制剂的治疗得以挽救。总之,我们的研究结果表明,circTCF25/miR-206/CypB 轴在胶质瘤进展、迁移、侵袭和肿瘤发生中起着至关重要的作用。
更新日期:2022-04-05
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