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Li R, Liu S, Li Y, Tang Q, Xie Y, Zhai R. Long noncoding RNA AFAP1‑AS1 enhances cell proliferation and invasion in osteosarcoma through regulating miR‑4695‑5p/TCF4‑β‑catenin signaling. Mol Med Rep 2018; 18:1616-1622. [PMID: 29901121 PMCID: PMC6072147 DOI: 10.3892/mmr.2018.9131] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 05/18/2018] [Indexed: 12/15/2022] Open
Abstract
Long noncoding RNA AFAP1‑AS1 has been shown to promote tumor progression in several human cancer types, such as thyroid cancer, tongue squamous cell carcinoma and lung cancer. However, the role of AFAP1‑AS1 in osteosarcoma (OS) has not been investigated. In the present study, the expression of AFAP1‑AS1 was significantly upregulated in OS tissues and cell lines. Moreover, AFAP1‑AS1 expression was negatively correlated with OS patient prognosis. Besides, AFAP1‑AS1 knockdown significantly inhibited the proliferation and invasion of OS cells in vitro. Furthermore, in vivo xenograft experiments indicated that AFAP1‑AS1 depletion delayed tumor growth. Regarding the underlying mechanism, AFAP1‑AS1 served as a sponge to repress the level of microRNA (miR)‑4695‑5p, which targeted transcription factor (TCF)4, a pivot effector of Wnt/β‑catenin signaling pathway. It was demonstrated that overexpression of AFAP1‑AS1 inhibited the expression of miR‑4695‑5p, while miR‑4695‑5p overexpression decreased TCF4 expression and reduced activation of Wnt/β‑catenin pathway. Through rescue assays, it was demonstrated that restoration of TCF4 expression reversed the effects of AFAP1‑AS1 knockdown or miR‑4695‑5p overexpression on OS cells. Taken together, these findings demonstrated that the AFAP1‑AS1/miR‑4695‑5p/TCF4‑β‑catenin axis played an important role in OS progression.
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Affiliation(s)
- Rongrui Li
- Second Department of Orthopaedic Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Shichen Liu
- First Department of Orthopaedic Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Yao Li
- Second Department of Orthopaedic Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Qingxi Tang
- Department of Emergency Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Yunchuan Xie
- Second Department of Orthopaedic Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Raosheng Zhai
- Second Department of Orthopaedic Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
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Leng X, Ding X, Wang S, Fang T, Shen W, Xia W, You R, Xu K, Yin R. Long noncoding RNA AFAP1-AS1 is upregulated in NSCLC and associated with lymph node metastasis and poor prognosis. Oncol Lett 2018; 16:727-732. [PMID: 29963138 PMCID: PMC6019894 DOI: 10.3892/ol.2018.8784] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/12/2018] [Indexed: 01/10/2023] Open
Abstract
Long noncoding RNA (lncRNA) has been indicated to have an important role in various types of malignant tumors; however, only a small number of lncRNAs have been entirely elucidated. In the present study, a novel lncRNA, actin filament associated protein 1 antisense RNA 1 (AFAP1-AS1), was investigated, which is highly expressed in non-small cell lung cancer (NSCLC). Reverse transcription-quantitative polymerase chain reaction and in situ hybridization were performed to detect AFAP1-AS1 expression in frozen tissues and tissue microarrays, respectively. The results revealed that the expression level of AFAP1-AS1 was significantly increased in tumor tissues, compared with the paired non-cancerous tissues. It was also determined that the AFAP1-AS1 expression level was higher in patients with lymph node metastasis than those without lymph node metastasis (P=0.014). Kaplan-Meier analysis was conducted to evaluate the overall survival of patients with NSCLC and different expression levels of AFAP1-AS1, and the results indicated that patients with high AFAP1-AS1 expression had a reduced survival time, compared with those with low AFAP1-AS1 expression (P=0.011). Cox regression analysis was also performed to analyze the prognostic value of lncRNA AFAP1-AS1. The obtained data demonstrated that lncRNA AFAP1-AS1 was an unfavorable prognostic biomarker for NSCLC (HR: 3.12, 95% CI (1.05–9.25), P=0.040). In conclusion, it was demonstrated that lncRNA AFAP1-AS1 is overexpressed in NSCLC and an unfavorable biomarker for patients with NSCLC.
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Affiliation(s)
- Xuechun Leng
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Xiangxiang Ding
- Department of Radiology, Cancer Institute of Jiangsu, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210009, P.R. China
| | - Siwei Wang
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Department of Radiology, Cancer Institute of Jiangsu, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210009, P.R. China
| | - Tian Fang
- Department of Comparative Medicine, Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Wenrong Shen
- Department of Radiology, Cancer Institute of Jiangsu, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210009, P.R. China
| | - Wenjia Xia
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Department of Radiology, Cancer Institute of Jiangsu, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210009, P.R. China
| | - Ran You
- Department of Comparative Medicine, Jingling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Keping Xu
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Rong Yin
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Department of Radiology, Cancer Institute of Jiangsu, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, Jiangsu 210009, P.R. China
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LncRNA AFAP1-AS1 is a prognostic biomarker and serves as oncogenic role in retinoblastoma. Biosci Rep 2018; 38:BSR20180384. [PMID: 29654169 PMCID: PMC6048204 DOI: 10.1042/bsr20180384] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/04/2018] [Accepted: 04/09/2018] [Indexed: 12/12/2022] Open
Abstract
The actin filament-associated protein 1 antisense RNA 1 (AFAP1-AS1) has been found to serve as an oncogenic long noncoding RNA (lncRNA) in most types of human cancer. The role of AFAP1-AS1 in retinoblastoma remains unknown. The purpose of the present study is to explore the clinical significance and biological function of AFAP1-AS1 in retinoblastoma. Levels of AFAP1-AS1 expression were measured in retinoblastoma tissues and cell lines. Loss-of-function study was performed to observe the effects of AFAP1-AS1 on retinoblastoma cell proliferation, cell cycle, migration, and invasion. In our results, AFAP1-AS1 expression was elevated in retinoblastoma tissues and cell lines, and associated with tumor size, choroidal invasion, and optic nerve invasion. Moreover, high expression of AFAP1-AS1 was an independent unfavorable prognostic factor in retinoblastoma patients. The experiment in vitro suggested down-regulation of AFAP1-AS1 inhibited retinoblastoma cell proliferation, migration and invasion, and blocked cell cycle. In conclusion, AFAP1-AS1 functions as an oncogenic lncRNA in retinoblastoma.
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Tang J, Zhong G, Wu J, Chen H, Jia Y. Long noncoding RNA AFAP1-AS1 facilitates tumor growth through enhancer of zeste homolog 2 in colorectal cancer. Am J Cancer Res 2018; 8:892-902. [PMID: 29888110 PMCID: PMC5992508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 04/10/2018] [Indexed: 06/08/2023] Open
Abstract
Increasing evidences have shown that long noncoding RNAs (lncRNAs) play critical regulatory roles in cancer biology. However, the contributions of lncRNAs to colorectal cancer remain largely unknown. Here, we identify a lncRNA AFAP1-AS1 that facilitates colorectal cancer, where it is upregulated. AFAP1-AS1 expression was associated with colorectal cancer patient survival. AFAP1-AS1 knockdown inhibited cell proliferation, cell cycle, and tumorigenesis in an subcutaneous mouse xenograft model system. Further data demonstrated that AFAP1-AS1 was associated with enhancer of zeste homolog 2 (EZH2) and that this association was required for the repression of EZH2 target genes. Our findings indicate that AFAP1-AS1 is an oncogenic lncRNA that promotes tumor progression and may be a novel prognostic factor in colorectal cancer. Targeting AFAP1-AS1 might be a potential therapeutic strategy for colorectal cancer treatment.
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Affiliation(s)
- Jianming Tang
- Department of Radiation Oncology, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical CollegeHangzhou 310009, Zhejiang, P. R. China
| | - Guansheng Zhong
- Department of Thyroid and Breast Surgery, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical CollegeHangzhou 310009, Zhejiang, P. R. China
| | - Jianhui Wu
- Department of Otolaryngology, Meizhou People’s HospitalMeizhou 514000, Guangdong, P. R. China
| | - Haiyan Chen
- Department of Radiation Oncology, The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009, Zhejiang, P. R. China
| | - Yongshi Jia
- Department of Radiation Oncology, Zhejiang Provincial People’s Hospital, People’s Hospital of Hangzhou Medical CollegeHangzhou 310009, Zhejiang, P. R. China
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Jin Y, Yang Q, Zhang M, Zhang S, Cai H, Dang R, Lei C, Chen H, Lan X. Identification of a Novel Polymorphism in Bovine lncRNA ADNCR Gene and Its Association with Growth Traits. Anim Biotechnol 2018; 30:159-165. [DOI: 10.1080/10495398.2018.1456446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yunyun Jin
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Qing Yang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Meng Zhang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Sihuan Zhang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Hanfang Cai
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Ruihua Dang
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Chuzhao Lei
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Hong Chen
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
| | - Xianyong Lan
- College of Animal Science and Technology, Northwest A&F University, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Yangling, Shaanxi, P.R. China
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