Circular RNA circCORO1C promotes laryngeal squamous cell carcinoma progression by modulating the let-7c-5p/PBX3 axis.
Animals
Apoptosis
Biomarkers, Tumor
/ genetics
Cell Movement
Cell Proliferation
Disease Progression
Gene Expression Regulation, Neoplastic
Homeodomain Proteins
/ genetics
Humans
Laryngeal Neoplasms
/ genetics
Male
Mice
Mice, Inbred BALB C
Mice, Nude
MicroRNAs
/ genetics
Microfilament Proteins
/ genetics
Neoplasm Invasiveness
Prognosis
Proto-Oncogene Proteins
/ genetics
RNA, Circular
/ genetics
Squamous Cell Carcinoma of Head and Neck
/ genetics
Tumor Cells, Cultured
Xenograft Model Antitumor Assays
Epithelial–mesenchymal transition
Laryngeal squamous cell carcinoma
Let-7c-5p
Metastasis
PBX3
circCORO1C
Journal
Molecular cancer
ISSN: 1476-4598
Titre abrégé: Mol Cancer
Pays: England
ID NLM: 101147698
Informations de publication
Date de publication:
02 06 2020
02 06 2020
Historique:
received:
20
01
2020
accepted:
11
05
2020
entrez:
4
6
2020
pubmed:
4
6
2020
medline:
18
2
2021
Statut:
epublish
Résumé
Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor of the head and neck. LSCC patients have seriously impaired vocal, respiratory, and swallowing functions with poor prognosis. Circular RNA (circRNA) has attracted great attention in cancer research. However, the expression patterns and roles of circRNAs in LSCC remain largely unknown. RNA sequencing was performed on 57 pairs of LSCC and matched adjacent normal mucosa tissues to construct circRNA, miRNA, and mRNA expression profiles. RT-PCR, qPCR, Sanger sequencing, and FISH were undertaken to study the expression, localization, and clinical significance of circCORO1C in LSCC tissues and cells. The functions of circCORO1C in LSCC were investigated by RNAi-mediated knockdown, proliferation analysis, EdU staining, colony formation assay, Transwell assay, and apoptosis analysis. The regulatory mechanisms among circCORO1C, let-7c-5p, and PBX3 were investigated by luciferase assay, RNA immunoprecipitation, western blotting, and immunohistochemistry. circCORO1C was highly expressed in LSCC tissues and cells, and this high expression was closely associated with the malignant progression and poor prognosis of LSCC. Knockdown of circCORO1C inhibited the proliferation, migration, invasion, and in vivo tumorigenesis of LSCC cells. Mechanistic studies revealed that circCORO1C competitively bound to let-7c-5p and prevented it from decreasing the level of PBX3, which promoted the epithelial-mesenchymal transition and finally facilitated the malignant progression of LSCC. circCORO1C has an oncogenic role in LSCC progression and may serve as a novel target for LSCC therapy. circCORO1C expression has the potential to serve as a novel diagnostic and prognostic biomarker for LSCC detection.
Sections du résumé
BACKGROUND
Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor of the head and neck. LSCC patients have seriously impaired vocal, respiratory, and swallowing functions with poor prognosis. Circular RNA (circRNA) has attracted great attention in cancer research. However, the expression patterns and roles of circRNAs in LSCC remain largely unknown.
METHODS
RNA sequencing was performed on 57 pairs of LSCC and matched adjacent normal mucosa tissues to construct circRNA, miRNA, and mRNA expression profiles. RT-PCR, qPCR, Sanger sequencing, and FISH were undertaken to study the expression, localization, and clinical significance of circCORO1C in LSCC tissues and cells. The functions of circCORO1C in LSCC were investigated by RNAi-mediated knockdown, proliferation analysis, EdU staining, colony formation assay, Transwell assay, and apoptosis analysis. The regulatory mechanisms among circCORO1C, let-7c-5p, and PBX3 were investigated by luciferase assay, RNA immunoprecipitation, western blotting, and immunohistochemistry.
RESULTS
circCORO1C was highly expressed in LSCC tissues and cells, and this high expression was closely associated with the malignant progression and poor prognosis of LSCC. Knockdown of circCORO1C inhibited the proliferation, migration, invasion, and in vivo tumorigenesis of LSCC cells. Mechanistic studies revealed that circCORO1C competitively bound to let-7c-5p and prevented it from decreasing the level of PBX3, which promoted the epithelial-mesenchymal transition and finally facilitated the malignant progression of LSCC.
CONCLUSIONS
circCORO1C has an oncogenic role in LSCC progression and may serve as a novel target for LSCC therapy. circCORO1C expression has the potential to serve as a novel diagnostic and prognostic biomarker for LSCC detection.
Identifiants
pubmed: 32487167
doi: 10.1186/s12943-020-01215-4
pii: 10.1186/s12943-020-01215-4
pmc: PMC7265647
doi:
Substances chimiques
Biomarkers, Tumor
0
Homeodomain Proteins
0
MicroRNAs
0
Microfilament Proteins
0
Proto-Oncogene Proteins
0
RNA, Circular
0
mirnlet7 microRNA, human
0
coronin proteins
145420-64-0
proto-oncogene protein Pbx3
146150-81-4
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
99Commentaires et corrections
Type : ErratumIn
Type : ErratumIn
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