rno-mir-22: rno-mir-22 is a precursor microRNA synthesized by Genechem, Co., Ltd., and is implicated in regulatory functions in various tissues [PMC5103773]. It is delivered into cells using plasmid vectors, and its interaction with target mRNAs, such as the Redd1 gene, has been identified using databases like TargetScan [PMC6109564], [PMC6405932]. The Redd1 gene contains specific binding sites for rno-mir-22, suggesting a direct regulatory relationship [PMC6405932]. The expression of rno-mir-22 varies across different tissues; it is down-regulated in the heart but upregulated in the kidney and lung following injury [PMC6377737]. In vitro studies have utilized primary cultures of cortical and striatal neurons infected with lentiviral vectors to express rno-mir-22 for research purposes [PMC3547907]. Additionally, lentiviral vectors have been engineered to express rno-mir-22 under a specific promoter for experimental studies involving human embryonic kidney 293T cells [PMC3547907]. These studies highlight the potential role of rno-mir-22 in cellular processes and its utility as a tool for investigating gene regulation mechanisms.