Figure 4. PALS-22 Is Broadly Expressed and Functions in the Intestine to Regulate IPR Expression and Thermotolerance(A and B) Confocal fluorescence images of adult animals with fosmid transgenes expressing (A) PALS-22::GFP and (B) CUL-6::GFP from endogenous promoters.(C) qRT-PCR measurement of IPR gene expression in animals with tissue-specific expression of a wild-type
pals-22 cDNA driven by endogenous (
pals-22),intestinal (
vha-6), neuronal (
unc-119), or hypodermal (
dpy-7) promoters in a
pals-22(
jy1) mutant background. Results are shown as the fold change relative to wildtype control and are the average of two independent biological replicates. Error bars are SD. *p < 0.05; n.s., not significant by Student's t test.(D) Survival of animals with
pals-22 tissue-specific rescue after 2 hr heat shock treatment at 37C followed by 24 hr at 20C. Strains were tested in triplicate.Fraction alive indicates mean survival among the triplicates; errors bars are SD. **p < 0.01; *p < 0.05; n.s., not significant by Student's t test. Heat shock assay wasrepeated three independent times with similar results; data from a representative experiment are shown.(E) Measurement of intestinal
cul-6 mRNA transcripts using single-molecule fluorescence in situ hybridization (smFISH). Graph is a compilation of three independent biological replicates. Each symbol represents the smFISH spot count from the four anteriormost intestinal cells of an individual worm. Statistical analysiswas performed using one-way ANOVA. ****p < 0.0001; *p < 0.05; n.s., not significant by one-way ANOVA.See also Figure S4.