| Since gastric cancer (GC) is diagnosed at advanced stages, the survival rate is low in affected people. In this regard, investigating
the mechanisms underlying GC development, are so critical. MiRNAs, which are small non coding RNAs, as a post
transcriptional repressor, regulate expression of target genes by stimulating breakage or transcription suppression of their
targets therefore aberrant expression of miRNAs leading to GC carcinogenesis. In the last decades, there have been various
studies approving the pivotal role of miRNAs in various phases of GC development including cancer initiation, proliferation,
migration, invasion, metastasis, angiogenesis, apoptosis, and drug resistance. Therefore, the present review aimed at
summarizing the dysregulated miRNAs which contribute to various cellular and developmental mechanisms such as, proliferation,
apoptosis, invasion, migration, and angiogenesis. Moreover, it provides an overview on novel miRNAs involved
in drug resistance and circular miRNAs as cancer biomarkers. Thereafter, it is hoped that the present study will shed more
light on diagnostic and prognostic biomarkers of GC, and potential GC treatments based on miRNAs. |