Figure 4: ARHGAP1, ARHGDIB and RRAS are targeted by miR-449 in HAECs. | Nature Communications

Figure 4: ARHGAP1, ARHGDIB and RRAS are targeted by miR-449 in HAECs.

From: miR-34/449 control apical actin network formation during multiciliogenesis through small GTPase pathways

Figure 4

(a,b) Transcript expression levels of ARHGAP1, ARHGDIB, DAAM1, NDRG1 or RRAS were analysed using real-time RT–PCR during HAEC differentiation (a) or following miR-449a overexpression (48 h) in proliferating HAECs (b), and normalized with UBC transcript as an internal control. (c) Specific interaction between miR-449a/b and the 3′-UTRs of ARHGAP1, ARHGDIB, DAAM1, NDRG1 and RRAS mRNAs was assessed using luciferase reporter assay on constructs carrying either the wild-type (wt) or mutants (mut.) 3′-UTR-binding sites for miR-449. Values were normalized with the internal Renilla luciferase control. (d) Detection of ARHGAP1, ARHGDIB and R-Ras proteins after miR-449 overexpression in proliferating HAECs for 72 h. HSP60 is used as an internal control. Quantification of protein levels are indicated above each corresponding band. All data are means±s.d. of at least three independent experiments (***P<0.001, **P<0.01 and *P<0.05; Student’s t-test).

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