A microarray expression profile and bioinformatic analysis of circular RNA in human esophageal carcinoma

Cai，Sina1; Zhang，Yuqin2; Zhang，Xiaona3; Wang，Liping4; Wu，Ziqing5; Fang，Weiyi5; Chen，Xiaohua5,6

2022-04-01

10.21037/jgo-22-137

Journal of Gastrointestinal Oncology   Impact Factor & Quartile

2078-6891

2219-679X

Background: Recent studies indicate that non-coding circular RNAs (circRNAs) are involved in the development of esophageal carcinoma (EC). This study aimed to identify differential expression of circRNAs in EC, which can provide potential biomarkers and therapeutic targets for EC treatment and improve the understanding of tumorigenesis mechanism. Methods: First, samples (n=5) of EC tissues and adjacent normal tissue were sent for circRNA microarray detection, Second, further bioinformatic analysis was performed, including circRNA-microRNA (miRNA), co-expression network analysis, Spearman correlation test, and cancer-related circRNA-miRNA axis analysis. Finally, the expression of circRNA that our analysis predicted to be hub genes was verified in samples (n=15) of EC tissues and adjacent normal tissue by real-time polymerase chain reaction (RT-PCR). Results: Microarray identified 102 upregulated and 67 significantly downregulated circRNAs were in EC patients' tumors relative to adjacent normal tissue. One upregulated circRNA (hsa_circRNA_401955) showed the most connection with MREs, therefore was regarded as the hub gene by the Spearman correlation test. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses showed that four primary pathways (mRNA surveillance, cytoskeleton actin regulation, spliceosome, and the NOD-like receptor signaling pathway) were predicted in the hub circRNA's five connected miRNA response elements (MREs). Furthermore, cancer-related circRNA-miRNA axis analyses showed that hsa_circRNA_100375 and its four connected MREs participated in the cancer-related pathway. RT-PCR showed that hsa_circRNA_100375 and hsa_circRNA_401955 were significantly increased in the tumor tissues of EC patients. Conclusions: Abnormal expression of circRNAs was involved in the tumorigenesis of EC. Key circRNAs, namely hsa_circRNA_401955 and hsa_circRNA_100375, may be as potential biomarkers and therapeutic targets for the treatment of EC.

bioinformatic analysis circular RNAs (circRNAs) Esophageal carcinoma (EC) microarray microRNA sponge

SCI

English

Others

Guangzhou Medical University[2013-special-15-6.10];

WOS:000789489200001

2-s2.0-85130205818

Scopus

1.Department of Oncology,The Third Affiliated Hospital of Southern Medical University,Guangzhou,China
2.Department of Clinical Oncology,The Affiliated Chenzhou Hospital,Hengyang Medical School,University of South China,Chenzhou,China
3.Graceland Medical Center,The Sixth Affiliated Hospital of Sun Yat-sen University,Guangzhou,China
4.Department of Clinical Oncology,South University of Science and Technology Hospital,Shenzhen,China
5.Cancer Center,Integrated Hospital of Traditional Chinese Medicine,Southern Medical University,Guangzhou,China
6.South China Normal University,Panyu Central Hospital Joint Laboratory of Translational Medical Research,Panyu Central Hospital,Guangzhou,China

Cai，Sina,Zhang，Yuqin,Zhang，Xiaona,et al. A microarray expression profile and bioinformatic analysis of circular RNA in human esophageal carcinoma[J]. Journal of Gastrointestinal Oncology,2022,13(2):510-526.

Cai，Sina.,Zhang，Yuqin.,Zhang，Xiaona.,Wang，Liping.,Wu，Ziqing.,...&Chen，Xiaohua.(2022).A microarray expression profile and bioinformatic analysis of circular RNA in human esophageal carcinoma.Journal of Gastrointestinal Oncology,13(2),510-526.

Cai，Sina,et al."A microarray expression profile and bioinformatic analysis of circular RNA in human esophageal carcinoma".Journal of Gastrointestinal Oncology 13.2(2022):510-526.