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Ju Z, Lei M, Xuan L, Luo J, Zhou M, Wang Y, Shen L, Skonieczna M, Ivanov DS, M H Zakaly H, Markovic V, Zhou P, Huang R. P53-response circRNA_0006420 aggravates lung cancer radiotherapy resistance by promoting formation of HUR/PTBP1 complex. J Adv Res 2023:S2090-1232(23)00203-5. [PMID: 37541584 DOI: 10.1016/j.jare.2023.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/18/2023] [Accepted: 07/26/2023] [Indexed: 08/06/2023] Open
Abstract
BACKGROUND p53 wild-type lung cancer cells can develop radiation resistance. Circular RNA (circRNA) consists of a family of transcripts with exclusive structures. circRNA is critical in tumorigenesis and is a potential biomarker or therapeutic target. It is uncertain how circRNA expression and functions are regulated post-radiation in p53 wild-type cancer cells. METHODS A549 or H1299 cells were divided into p53-wt and p53-KO groups by CRISPR/Cas9; both groups were subjected to 4Gy ionizing radiation (IR: p53-wt-IR and p53-KO-IR). RNA-seq, CCK8, cell cycle, and other functional and mechanism experiments were performed in vivo. p53 gene knockout mice were generated to test the cell results in vitro. RESULTS circRNAs were found in differential groups. circRNA_0006420 (IRSense) was upregulated in p53-wt cells but had the same expression level as p53-KO cells after radiation, indicating that p53 silencing prevents its upregulation after IR. In the presence of p53, upregulated IRSense post-radiation induces G2/M arrest by regulating DNA damage repair (DDR) pathway-related proteins. Meanwhile, upregulated IRSense post-radiation aggravates the radiation-induced epithelial-mesenchymal transition (EMT). Interestingly, in the presence of p53, it promotes IRSense/HUR/PTBP1 complex formation resulting in the promotion of the radiation-induced EMT. Moreover, c-Jun regulates the upregulation of p53 transcription after radiation treatment. For these lung cancer cells with p53, upregulated IRSense aggravates lung cancer cell proliferation and increases radiation resistance by interacting with HUR (ElAV-like protein 1) and PTBP1 (polypyrimidine tract-binding protein 1) in the nucleus. CONCLUSIONS Lung cancer cells retaining p53 may upregulate circRNA_0006420 (IRSense) expression post radiation to form an IRSense/HUR/PTBP1 complex leading to radiotherapy resistance. This study furthers our understanding of the roles of circRNA in regulating the effect of radiotherapy and provides novel therapeutic avenues for effective clinical lung cancer therapies.
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Affiliation(s)
- Zhao Ju
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China
| | - Mingjun Lei
- Department of Oncology, Xiangya Hospital, Central South University.
| | - Lihui Xuan
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
| | - Jinhua Luo
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
| | - Meiling Zhou
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
| | - Yin Wang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
| | - Liangfang Shen
- Department of Oncology, Xiangya Hospital, Central South University.
| | - Magdalena Skonieczna
- Department of Systems Biology and Engineering, Silesian University of Technology, Institute of Automatic Control, Akademicka 16, Gliwice 44-100, Poland, Biotechnology Centre, Silesian University of Technology, Krzywoustego 8, Gliwice 44-100, Poland.
| | - Dmitry S Ivanov
- Quantum Electronics Division, Lebedev Physical Institute, 119991 Moscow, Russia.
| | - Hesham M H Zakaly
- Experimental Physics Department, Institute of Physics and Technology, Ural Federal University, Ekaterinburg, Russia.
| | - Vladimir Markovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, 34000 Kragujevac.
| | - Pingkun Zhou
- Beijing Institute of Radiation medicine, Beijing, China.
| | - Ruixue Huang
- Department of Occupational and Environmental Health, Xiangya School of Public Health, Central South University, Changsha, 410078, China.
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Ling J, Xie X, Wang Y, Huang W, Luo J, Su J, Fan H, Wu S, Liu L. Differential expression profiles of miRNA in granulomatous lobular mastitis and identification of possible biomarkers. Exp Ther Med 2022; 24:500. [PMID: 35837043 PMCID: PMC9257833 DOI: 10.3892/etm.2022.11427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/16/2022] [Indexed: 11/06/2022] Open
Abstract
The etiology and pathogenesis of granulomatous lobular mastitis (GLM) remain largely elusive and the expression levels and regulatory roles of microRNAs (miRNAs or miRs) in GLM have remained mostly undetermined. In the present study, the miRNAs that were differentially expressed in breast biopsy samples from patients with GLM and normal tissue adjacent to fibroadenoma were analyzed, a comprehensive differential expression profile of miRNAs was provided and potential biomarkers were screened out. The expression profile of miRNAs was determined by high-throughput sequencing in the tissues of patients with GLM and healthy controls. Significantly differentially expressed miRNAs were screened by threshold setting and cluster analysis and their target genes were analyzed by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment. Finally, circulating differentially expressed miRNAs between the GLM and control groups were further analyzed by reverse transcription-quantitative PCR (RT-qPCR). A total of 31,077 miRNAs were detected by high-throughput sequencing. By using the cutoff criteria of |log2 fold change|>2.5 and q<0.001, 13 miRNAs that were indicated to be GLM biomarkers were screened out. The expression levels of these 13 miRNAs in the GLM group were higher than those in the control group. GO and KEGG enrichment analyses suggested that the occurrence and development of GLM may be associated with autoimmune inflammation, metabolism and pathogenic organisms. miR-451a and miR-5571-3p were confirmed to be significantly increased in the serum of patients with GLM compared with their levels in the serum of healthy volunteers, which suggests that they may be used as biomarkers of GLM. To the best of our knowledge, the present study was the first report detailing genome-wide miRNA profiling of patients with GLM compared with controls. The possible targets and pathways of GLM were evaluated by bioinformatics analysis. The present study identified 13 differentially expressed miRNAs with important theoretical significance and potential application. Furthermore, miR-451a and miR-5571-3p were verified by RT-qPCR as possible biomarkers of GLM.
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Affiliation(s)
- Jie Ling
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Xianmin Xie
- Department of Hand Surgery, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Yue Wang
- Department of Galactophore, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Weifang Huang
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Jun Luo
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Jingqun Su
- Graduate School, Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Hongqiao Fan
- Department of Galactophore, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Shiting Wu
- Department of Galactophore, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
| | - Lifang Liu
- Department of Galactophore, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan 41000, P.R. China
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Chi F, Qiu F, Jin X, Chen L, He G, Han S. LINC00982 Inhibits the Proliferation, Migration, and Invasion of Breast Cancer Cells Through the miR-765/DPF3 Axis. DNA Cell Biol 2022; 41:424-436. [PMID: 35325570 DOI: 10.1089/dna.2021.0866] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Breast cancer (BC) is one of the most frequently occurring malignant tumors in female adults. The long intergenic nonprotein coding RNA 00982 (LINC00982) has been regarded as a cancer suppressor in several human cancers. However, the function and the underlying mechanisms of LINC00982 have not been studied in BC. The present study found that LINC00982 was significantly downregulated in BC tumor tissues, and the low LINC00982 level predicts a poor prognosis of BC. Through the overexpression and suppression of LINC00982 in two BC cell lines, we found that LINC00982 could inhibit cell proliferation, migration, and invasion by suppressing the activity of the signal transducer and activator of transcription 3 (STAT3)/nuclear factor kappa B (NF-κB) signal pathway. Furthermore, luciferase reporter assay has been used to verify that LINC00982 functions as a molecular sponge for miR-765, which could target DPF3. The relative expression of miR-765 decreased with LINC00982 overexpressing, and DPF3 increased at the same time. In addition, the suppression of cell malignant phenotype caused by overexpression of LINC00982 can be reversed by inhibition of DPF3. To verify the function of LINC00982 in vivo, the BC cells were implanted in nude mice and the results suggested the tumor growth and malignant phenotype were suppressed by LINC00982. In this study, we prove that LINC00982 regulates the growth and development of BC through STAT3/NF-κB signal pathway, mediated by the miR-765/DPF3 axis. LINC00982 may function as a target molecule to take part in the prognosis and therapy of BC.
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Affiliation(s)
- Feng Chi
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Fang Qiu
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiaoming Jin
- Department of Endocrinology, Northern Theater Air Force Hospital of the People's Liberation Army, Shenyang, Liaoning, China
| | - Long Chen
- Department of Breast Surgery, Liaoning Cancer Hospital and Institute, Shenyang, Liaoning, China
| | - Guijin He
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Sijia Han
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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