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- W3048798348 abstract "Our results have recently confirmed the expression of neuropeptide genes (NPGs) in the antennae of the triatomine bugs Rhodnius prolixus and Triatoma infestans. Besides, expression of a broad set of GPCR-coding genes associated to neuropeptide (NP) signaling processes has also been reported. Our data had also evinced that antennae produce transcripts for enzymes responsible for the post-transductional processing of prepropeptides. Furthermore, we presented evidence of enzyme gene expression related to synthetic pathways for biogenic amines (as well as expression of genes coding for their receptors). The present study compares diverse antennal transcriptomes (from Aedes aegypti, Anopheles gambiae, Anopheles quadriannulatus, Apis mellifera, Drosophila melanogaster, Rhodnius prolixus and Tribolium castaneum) belonging to four insect orders to validate whether NPGs are expressed in antennae. Transcriptome profile comparison has clearly shown that diverse NPGs present consistent antennal expression in seven species (including both holometabolous as well as hemimetabolous insects). The very high levels of expression observed for IDLSRF (known as Prohormone-4 precursor), ITG and ITP genes in the antennae of all species suggest functional roles related to the control of sensory function for these NPs for which there is yet limited evidence for other physiological roles. Additionally, DH31, OK, RYa, SIFa, sNPF and TK were expressed consistently in the antennae of most species studied. Besides, NPGs coding for AKH1, allatostatins (AstC, AstCC, MIP), allatotropin, CAP-2b, CNMa, diverse ILPs, LNPF, Lst, MS, NPLP1, NVP-like, PBAN/PK, PDF and SK presented expression in the antennae of several species. A subset of GPCR-coding genes had consistent expression in antennae of most species. Interestingly, several genes coding for nuclear receptors, which probably represent an alternative signaling system modulating antennal sensory processes due to their responsiveness to insect hormones, had consistent antennal expression. The set of genes coding for enzymes necessary for prepropeptide processing, as well as those participating in biogenic amine synthesis, had consistent antennal expression. The latter suggests that insect antennae present the biochemical machinery needed for local synthesis of these signalling molecules. The potential antennal role of this modulatory machinery will be discussed in the context of insect sensory processes." @default.
- W3048798348 created "2020-08-18" @default.
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- W3048798348 date "2019-11-08" @default.
- W3048798348 modified "2023-09-27" @default.
- W3048798348 title "NEUROPEPTIDE SYNTHESIS IN ANTENNAE: GENE EXPRESSION PROFILES EMERGING FROM INSECT PHYLOGENY" @default.
- W3048798348 hasPublicationYear "2019" @default.
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