Human
gastric cancer is a common
malignant neoplasm of the digestive system and represents a threat to human health worldwide. The mechanisms underlying
gastric cancer germination and development are not yet fully understood.
Circular RNAs (
circRNAs) serve crucial roles in various physiological and
pathological processes, particularly
cancer. However, few studies have focused on the mechanisms involving
circRNAs in
gastric cancer. Therefore the present study set out to identify the differentially expressed
circRNAs in
gastric cancer. Three specimens of
gastric cancer and normal gastric tissue were selected and
circRNA microarray analysis was performed to detect the differentially expressed
circRNAs. The changes in
circRNAs were confirmed by reverse transcription-quantitative polymerase chain reaction analysis. A total of 347 upregulated and 603 downregulated
circRNAs (fold-change, >2.0) were identified in
gastric cancer compared with the normal gastric tissue. A total of 20 selected
circRNAs were dysregulated during
gastric cancer, which suggests their potential role in
gastric cancer. The present study identified
circRNAs in the expression profile of human
gastric cancer that were potentially involved in the underlying molecular mechanisms of its development.