The miR-23a~27a~24-2 cluster represses preadipocyte differentiation. (A–C) Time course of miR-23a, miR-27a, and miR-24-2 expression during preadipocyte differentiation. (D) Oil red O staining of lipids in differentiated adipocytes transfected with miR-23a agomir (23m)/antagomir (23I), miR-27a agomir (27m)/antagomir (27I), miR-24-2 agomir (24-2m)/antagomir (24-2I), negative control (NC) for agomir (mNC) and NC for antagomir (INC, magnification: 40×). (E) ELISA analysis of TG content in adipocytes transfected with Agomir NC, miR-23a agomir, miR-27a agomir and miR-24-2 agomir. Error bars represent SEM. Lowercase represents p < 0.05. Uppercase represents p < 0.01. “*” represents p < 0.05; “**” represents p < 0.01.