The nuclear receptor seven up regulates genes involved in immunity and xenobiotic response in the adult drosophila female fat body

Lesley N. Weaver, Daniela Drummond-Barbosa

Research output: Contribution to journalArticlepeer-review

Abstract

The physiology of organisms depends on inter-organ communication in response to changes in the environment. Nuclear receptors are broadly expressed transcription factors that respond to circulating molecules to control many biological processes, including immunity, detoxification, and reproduction. Although the tissue-intrinsic roles of nuclear receptors in reproduction have been extensively studied, there is increasing evidence that nuclear receptor signaling in peripheral tissues can also influence oogenesis. We previously showed that the Drosophila nuclear receptor Seven up (Svp) is required in the adult fat body to regulate distinct steps of oogenesis; however, the relevant downstream targets of Svp remain unknown. Here, we took an RNA sequencing approach to identify candidate Svp targets specifically in the adult female fat body that might mediate this response. svp knockdown in the adult female fat body significantly downregulated immune genes involved in the first line of pathogen defense, suggesting a role for Svp in stimulating early immunity. In addition, we found that Svp transcriptionally regulates genes involved in each step of the xenobiotic detoxification response. Based on these findings, we propose a testable model in which Svp functions in the adult female fat body to stimulate early defense against pathogens and facilitate detoxification as part of its mechanisms to promote oogenesis.

Original languageEnglish (US)
Pages (from-to)4625-4635
Number of pages11
JournalG3: Genes, Genomes, Genetics
Volume10
Issue number12
DOIs
StatePublished - Dec 2020

Keywords

  • Drosophila
  • Fat body
  • Immunity
  • Oogenesis
  • Seven up
  • Xenobiotics

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

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