Characterization of phosphatase and tensin homolog expression in the mosquito Aedes aegypti: six splice variants with developmental and tissue specificity.
Phosphatase and tensin homologue (PTEN), an inhibitor of insulin signalling, was characterized in Aedes aegypti. Surprisingly, six splice variants were identified: three with alternative terminal exons (AaegPTEN2 : 3 : 6) and three formed by intron retention (AaegPTEN1 : 4 : 5). All variants encoded active phosphatase domains. Variants with alternative terminal exons also encoded C2 and COOH-domains, and AaegPTEN6 encoded a PDZ binding motif. These three variants also had unique expression patterns. AaegPTEN2 was expressed primarily in the ovary. AaegPTEN3 was predominant in heads and midguts, and throughout development, except early embryogenesis. AaegPTEN6 was expressed in fat body, ovaries, and throughout development. Intron retention variants were weakly expressed in most samples. These expression patterns suggest that AaegPTEN variants play unique roles in regulating insulin's pleiotropic effects.
Riehle
Michael A
MA
Department of Entomology, University of Arizona, Tucson, USA.
Brown
Jessica M
JM
D000330:Aedes / Q000196:embryology / Q000201:enzymology*; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D017931:DNA Primers; D005091:Exons / Q000235:genetics; D005260:Female; D040461:Gene Components; D015870:Gene Expression; D014644:Genetic Variation; D008969:Molecular Sequence Data; D010053:Ovary / Q000378:metabolism; D051059:PTEN Phosphohydrolase / Q000235:genetics / Q000378:metabolism*; D020033:Protein Isoforms / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017422:Sequence Analysis, DNA
D017931:DNA Primers; D020033:Protein Isoforms; D051059:PTEN Phosphohydrolase