Transcriptional Profile of Aedes aegypti Leucine-Rich Repeat Proteins in Response to Zika and Chikungunya Viruses

Int J Mol Sci. 2019 Jan 31;20(3):615. doi: 10.3390/ijms20030615.

Abstract

Aedes aegypti (L.) is the primary vector of chikungunya, dengue, yellow fever, and Zika viruses. The leucine-rich repeats (LRR)-containing domain is evolutionarily conserved in many proteins associated with innate immunity in invertebrates and vertebrates, as well as plants. We focused on the AaeLRIM1 and AaeAPL1 gene expressions in response to Zika virus (ZIKV) and chikungunya virus (CHIKV) infection using a time course study, as well as the developmental expressions in the eggs, larvae, pupae, and adults. RNA-seq analysis data provided 60 leucine-rich repeat related transcriptions in Ae. aegypti in response to Zika virus (Accession number: GSE118858, accessed on: August 22, 2018, GEO DataSets). RNA-seq analysis data showed that AaeLRIM1 (AAEL012086-RA) and AaeAPL1 (AAEL009520-RA) were significantly upregulated 2.5 and 3-fold during infection by ZIKV 7-days post infection (dpi) of an Ae. aegypti Key West strain compared to an Orlando strain. The qPCR data showed that LRR-containing proteins related genes, AaeLRIM1 and AaeAPL1, and five paralogues were expressed 100-fold lower than other nuclear genes, such as defensin, during all developmental stages examined. Together, these data provide insights into the transcription profiles of LRR proteins of Ae. aegypti during its development and in response to infection with emergent arboviruses.

Keywords: Aedes aegypti; Leucine-Rich Repeat Proteins; Zika virus; chikungunya virus; gene expression; immune responses.

MeSH terms

  • Aedes / genetics
  • Aedes / growth & development*
  • Aedes / virology
  • Animals
  • Chikungunya Fever / genetics
  • Chikungunya Fever / virology
  • Chikungunya virus / pathogenicity*
  • Female
  • Gene Expression Profiling / veterinary*
  • Gene Expression Regulation, Developmental
  • Insect Proteins / genetics
  • Larva / genetics
  • Larva / virology
  • Leucine-Rich Repeat Proteins
  • Proteins / genetics*
  • Sequence Analysis, RNA / veterinary
  • Zika Virus / pathogenicity*
  • Zika Virus Infection / genetics
  • Zika Virus Infection / virology

Substances

  • Insect Proteins
  • Leucine-Rich Repeat Proteins
  • Proteins