shRNA, siRNA, and RNAi can be used as effective tools for gene knockdown studies in rat cells. In rat cells, shRNA constructs can be introduced into cells through transfection or transduction, leading to the expression of shRNA molecules that target specific genes. SiRNA molecules can also be introduced into rat cells to trigger the degradation of target mRNA, leading to the knockdown of the target gene. RNAi technology can also be used in rat cells through the use of lentiviral vectors engineered to express shRNA or siRNA molecules that target specific genes.