Generation of Ostβ-/- mice.
(A) Schematic representation of the wild-type OSTβ and knockout OSTβ gene resulting from CRISPR/Cas9-mediated deletion of exon 3. (B) OSTα and OSTβ mRNA expression in ileums of 4- and 8-week-old male wild-type, Ostα-/- and Ostβ-/- mice. Data are normalized using the geometric mean of CyclophillinB and Rpl4 (n = 5–7 mice per group). Statistical analysis was done using a one-way ANOVA test and Dunnett’s test to compare with wild-type littermates. ∗Indicates p value of <0.05. (C) OSTα and OSTβ protein expression in ileums of 4-week-old female wild-type, Ostα-/- and Ostβ-/- mice. Na/K-ATPase is used as loading control. (D) Immunohistochemistry on ileal sections from wild-type and Ostβ-/- mice stained with antibody against OSTβ. Original magnification, 400x. Scale bar 25 μm. bp, base pair; del, deletion; KO, knockout; Ostα, organic solute transporter alpha; Ostβ, organic solute transporter beta; WT, wild-type.