Figure 1.
mir-240/786 Is Expressed in Intestinal Cells (A) Alignment of miR-193b and miR-365a in humans with miR-240 and miR-786 in C. elegans, respectively. Dots indicate bases conserved between humans and C. elegans. (B) The
mir-240 and
mir-786 sequences are separated by only 100 nt on the X chromosome. The deletion,
n4541, removes 1185 bp. Rescuing activity was observed with a genomic fragment that contains
mir-786. (C) Schematic of C. elegans intestine with a series of 9 rings of cells from the anterior
int1 to the posterior
int9, modified from [17]. (D and E) Representative confocal images of the
mir-240/786 promoter driving GFP expression (
mir-240/786prom::gfp). Anterior is to the left. Scale bar represents 20 mm. Weak GFP expression is observed in the
int1 anterior ring of cells (D). No expression is observed in the pharynx in adult worms. GFP expression is observed in the posterior
int9 cells (E). Expression is also observed in the gonadal sheath cells.