Hsa_circ_0039411 promotes tumorigenesis and progression of papillary thyroid cancer by miR‐1179/ABCA9 and miR‐1205/MTA1 signaling pathways

Yang, Yimin; Ding, Lili; Li, Yanhua; Xuan, Chengluan

doi:10.1002/jcp.29048

Cited by 55 publications

(43 citation statements)

References 37 publications

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“…For instance, a previous study published that the tumor suppressor function of miR-1179 was confiscated by circ_0000735 during the development of non-small cell lung cancer [51]. A similar experiment confirmed that the inhibitory effect of miR-1179 on thyroid cancer was sponged by circ_0039411 during the pathological process [52]. Another study pointed out that circ_0003645 improved cell aggressiveness through sponging miR-1179 [53].…”

Section: Discussionmentioning

confidence: 74%

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

Zhu

Song

et al. 2020

Cancer Cell Int

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Background: Cervical cancer (CC) is a malignant tumor found in the lowermost part of the womb. Evolving studies on CC have reported that circRNA plays a crucial role in CC progression. In this study, we investigated the main function of a novel circRNA, circ_0084927, and its regulatory network in CC development. Methods: qRT-PCR was applied to evaluate the expression of circ_0084927, miR-1179, and CDK2 mRNA in CC tissues and cells. Dual-luciferase reporting experiments and RNA immunoprecipitation (RIP) assay were conducted to validate the target relationship of miR-1179 with circ_0084927 and CDK2 mRNA. CCK-8 and BrdU assays were also used to evaluate CC cell proliferation. The adhesion and apoptosis phenotypes of CC cells were measured using cell-matrix adhesion and caspase 3 activation assay. Flow cytometry was also employed to detect the CC cell cycle. Results: Our results indicated that circ_0084927 was up-regulated in CC tissues and cells. Findings also revealed that circ_0084927 silence inhibited CC cell proliferation and adhesion while facilitating apoptosis and triggering cell cycle arrest. However, miR-1179 down-regulation appeared in CC tissues. Apart from observing that circ_0084927 abolished miR-1179's inhibitory effects on cell proliferation and adhesion, it was found that CDK2 was up-regulated in CC tissues and was instrumental in cancer promotion. Also observed was that miR-1179 directly targeted CDK2, thereby inhibiting CDK2's promotion on the malignant phenotypes of CC cells. Lastly, results indicated that circ_0084927 revoked the inhibitory effect of miR-1179 on CDK2 by sponging miR-1179. Conclusion: circ_0084927 promoted cervical carcinogenesis by sequestering miR-1179, which directly targeted CDK2. Our results also provided novel candidate targets for CC treatment in that it revealed the circ_0084927/miR-1179/CDK2 regulatory network that strengthened CC aggressiveness.

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Section: Discussionmentioning

confidence: 74%

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

Zhu

Song

et al. 2020

Cancer Cell Int

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“…9 In TC, the roles of circ_0039411 and circ_0025033 had been elucidated, both of which could promote the progression of TC. 10,11 Circ_0058124 is a newly discovered circRNA differentially expressed in TC and has been proved to be associated with the poor prognosis of patients. 12 However, the role and mechanism of TC should be further explored.…”

Section: Introductionmentioning

confidence: 99%

<p>Circ_0058124 Upregulates MAPK1 Expression to Promote Proliferation, Metastasis and Metabolic Abilities in Thyroid Cancer Through Sponging miR-940</p>

Sun¹,

Chen²,

Lv³

et al. 2020

OTT

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Background: Thyroid cancer (TC) is an endocrine disease, and its progression is regulated by many factors, including circular RNAs (circRNAs). However, as a new circRNA, the role of circ_0058124 in TC is worth further exploration. Methods: The expression levels of circ_0058124, microRNA-940 (miR-940) and mitogen-activated protein kinase 1 (MAPK1) were assessed by quantitative polymerase chain reaction (q-PCR). The circular characteristic of circ_0058124 was identified by oligo (dT) 18 primers, Ribonuclease R (RNase R) and Actinomycin D (ActD), and its localization was determined by nuclear-cytoplasmic separation assay. Also, cell proliferation was detected by colony formation assay, and cell migration and invasion were assessed by transwell assay. Further, Seahorse XF Extracellular Flux Analyzer was used to measure the oxygen consumption rate (OCR) of cells. Besides, dual-luciferase reporter, RNA immunoprecipitation (RIP) and RNA pull-down assays were used to identify the mechanism of circ_0058124. Western blot (WB) analysis was used to test the MAPK1 protein level. In addition, mice xenograft models were constructed to test the effect of circ_0058124 on TC tumor growth in vivo. Results: Circ_0058124 was highly expressed in TC and is a stable cyclic transcript, mainly located in the cytoplasm. Circ_0058124 knockdown suppressed proliferation, migration, invasion and metabolic abilities in TC cells. MiR-940 could be absorbed by circ_0058124, and the inhibition effect of its overexpression on TC progression could be reversed by overexpressed-circ_0058124. MAPK1 was a target of miR-940, and the suppression effect of its silencing on TC progression could be inverted by miR-940 inhibitor. Besides, MAPK1 expression was regulated by circ_0058124 and miR-940. Interference of circ_0058124 also reduced TC tumor growth in vivo. Conclusion: Circ_0058124 might play a carcinogenic role in TC progression by regulating the miR-940/MAPK1 axis, which might provide a new idea for the treatment of TC.

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“…For instance, a previous study published that the tumor suppressor function of miR-1179 was con scated by circ_0000735 during the development of non-small cell lung cancer [51]. A similar experiment con rmed that the inhibitory effect of miR-1179 on thyroid cancer was sponged by circ_0039411 during the pathological process [52]. Another study pointed out that circ_0003645 improved cell aggressiveness through sponging miR-1179 [53].…”

Section: Discussionmentioning

confidence: 91%

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

Zhu

Song

et al. 2020

Preprint

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Abstract Background: Cervical cancer (CC) is a highly malignant tumor. found in the lowermost part of the womb. Evolving researchesstudies on CC have unveiled a conceptreported that circRNA exerts important rolesplays a crucial role in CC progression. In this study, we mainly exploredinvestigated the rolemain function of a novel circRNA, circ_0084927, and its regulatory network in theCC development of CC. Methods: qRT-PCR was applied to evaluate the expression of circ_0084927, miR-1179, and CDK2 mRNA in CC tissues and cells. Dual-luciferase reporting experiments and RNA immunoprecipitation (RIP) assay were conducted to validate the target relationship of miR-1179 with circ_0084927 and CDK2 mRNA. CCK-8 and BrdU assay wasassays were also used to evaluate CC cell proliferation. The adhesion and apoptosis phenotypes of CC cells were measured byusing cell-matrix adhesion and caspase 3 activation assay. Flow cytometry was also employed to detect the CC cell cycle. Results: Our results indicated that circ_0084927 was up-regulated in CC tissues and cells, and. Findings also revealed that circ_0084927 silence inhibited CC cell proliferation and adhesion, while facilitating apoptosis as well asand triggering cell cycle arrest. On the other handHowever, miR-1179 down-regulation appeared in CC tissues. Additionally,Apart from observing that circ_0084927 abolished miR-1179’s inhibitory effects on cell proliferation and adhesion. Our study showed, it was found that CDK2 was up-regulated in CC tissues and played awas instrumental in cancer-promoting role. Furthermore, promotion. Also observed was that miR-1179 directly targeted CDK2, thereby inhibiting CDK2’s promotion on the malignant phenotypes of CC cells. Lastly, results indicated that circ_0084927 revoked the inhibitory effect of miR-1179 on CDK2 by sponging miR-1179. Conclusion: Circcirc_0084927 promoted cervical carcinogenesis by sequestering miR-1179 that, which directly targeted CDK2. Our results shed light onalso provided novel candidate targets for CC treatment in that it revealed the circ_0084927/miR-1179/CDK2 regulatory network that strengthened CC aggressiveness, providing novel candidate targets for CC treatment..

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Hsa_circ_0039411 promotes tumorigenesis and progression of papillary thyroid cancer by miR‐1179/ABCA9 and miR‐1205/MTA1 signaling pathways

Cited by 55 publications

References 37 publications

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

<p>Circ_0058124 Upregulates MAPK1 Expression to Promote Proliferation, Metastasis and Metabolic Abilities in Thyroid Cancer Through Sponging miR-940</p>

circ_0084927 promotes cervical carcinogenesis by sponging miR-1179 that suppresses CDK2, a cell cycle-related gene

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