PMID- 37728841 OWN - NLM STAT- Publisher LR - 20230920 IS - 1559-0305 (Electronic) IS - 1073-6085 (Linking) DP - 2023 Sep 20 TI - CircPRRC2C Promotes the Oncogenic Phenotypes of Laryngeal Squamous Cell Carcinoma Cells via MiR-136-5p/HOXD11 Axis. LID - 10.1007/s12033-023-00868-y [doi] AB - The involvement of circular RNAs (circRNAs) in laryngeal squamous cell carcinoma (LSCC) carcinogenesis has gradually been proposed. Herein, we aimed to explore the function and mechanism of circPRRC2C in LSCC. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were used for detecting the content of genes and proteins. In vitro experiments were conducted using 5-ethynyl-2'-deoxyuridine, colony formation, flow cytometry, and transwell assays. The binding between miR-136-5p and circPRRC2C or Homeobox D11 (HOXD11) was confirmed by using the dual-luciferase reporter assay. The murine xenograft model was established for in vivo analysis. The commercial kit was used for exosome separation. CircPRRC2C is a stable circRNA, and was highly expressed in LSCC tissues and cell lines. Functionally, circPRRC2C deficiency impaired LSCC cell proliferation, migration and invasion but induced cell apoptosis in vitro and impeded tumor growth in vivo, however, circPRRC2C overexpression showed the exact opposite effects. Mechanistically, circPRRC2C directly targeted miR-136-5p, which showed inhibitory effects on the growth and mobility of LSCC cells. Meanwhile, miR-136-5p directly targeted HOXD11, and circPRRC2C/miR-136-5p/HOXD11 formed a feedback loop in LSCC cells. Further rescue assays exhibited that circPRRC2C exerted its effects by miR-136-5p/HOXD11 axis. In addition, circPRRC2C was stably packaged into exosomes and showed potential diagnostic value for LSCC. CircPRRC2C acted as an oncogene to promote LSCC cell oncogenic phenotypes via miR-136-5p/HOXD11 axis, besides, circPRRC2C was stably packaged into exosomes, indicating the potential application of circPRRC2C-targeting agents in the treatment in LSCC. CI - (c) 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Peng, Xiu AU - Peng X AD - Department of Otolaryngology, Wuhan Hospital of Traditional Chinese Medicine, No.49, Nihuangpi Road, Wuhan, 430022, Hubei, China. FAU - Chen, Xintian AU - Chen X AD - College of Life Science, South-Central MinZu University, Wuhan, 430074, China. AD - College of Resource and Environmental Science, South-Central MinZu University, Wuhan, 430074, China. FAU - Peng, Shuai AU - Peng S AD - Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based Textile Materials, Wuhan Textile University, Wuhan, 430073, China. gwzps211@126.com. AD - College of Life Science, South-Central MinZu University, Wuhan, 430074, China. gwzps211@126.com. FAU - Chen, Yingming AU - Chen Y AD - College of Resource and Environmental Science, South-Central MinZu University, Wuhan, 430074, China. FAU - Li, Yong AU - Li Y AUID- ORCID: 0009-0003-9787-6139 AD - Department of Otolaryngology, Wuhan Hospital of Traditional Chinese Medicine, No.49, Nihuangpi Road, Wuhan, 430022, Hubei, China. niyoo19862022@163.com. FAU - Tian, Yang AU - Tian Y AD - College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China. LA - eng PT - Journal Article DEP - 20230920 PL - Switzerland TA - Mol Biotechnol JT - Molecular biotechnology JID - 9423533 SB - IM OTO - NOTNLM OT - Apoptosis OT - CircPRRC2C OT - Exosome OT - HOXD11 OT - MiR-136-5p EDAT- 2023/09/20 12:51 MHDA- 2023/09/20 12:51 CRDT- 2023/09/20 11:31 PHST- 2023/03/14 00:00 [received] PHST- 2023/08/21 00:00 [accepted] PHST- 2023/09/20 12:51 [medline] PHST- 2023/09/20 12:51 [pubmed] PHST- 2023/09/20 11:31 [entrez] AID - 10.1007/s12033-023-00868-y [pii] AID - 10.1007/s12033-023-00868-y [doi] PST - aheadofprint SO - Mol Biotechnol. 2023 Sep 20. doi: 10.1007/s12033-023-00868-y.