Gene expression patterns associated with Leishmania panamensis infection in macrophages from BALB/c and C57BL/6 mice

PLoS Negl Trop Dis. 2021 Feb 22;15(2):e0009225. doi: 10.1371/journal.pntd.0009225. eCollection 2021 Feb.

Abstract

Leishmania parasites can trigger different host immune responses that result in varying levels of disease severity. The C57BL/6 and BALB/c mouse strains are among the host models commonly used for characterizing the immunopathogenesis of Leishmania species and the possible antileishmanial effect of novel drug candidates. C57BL/6 mice tend to be resistant to Leishmania infections, whereas BALB/c mice display a susceptible phenotype. Studying species-specific interactions between Leishmania parasites and different host systems is a key step to characterize and validate these models for in vivo studies. Here, we use RNA-Seq and differential expression analysis to characterize the transcriptomic profiles of C57BL/6 and BALB/c peritoneal-derived macrophages in response to Leishmania panamensis infection. We observed differences between BALB/c and C57BL/6 macrophages regarding pathways associated with lysosomal degradation, arginine metabolism and the regulation of cell cycle. We also observed differences in the expression of chemokine and cytokine genes associated with regulation of immune responses. In conclusion, infection with L. panamensis induced an inflammatory gene expression pattern in C57BL/6 macrophages that is more consistently associated with a classic macrophage M1 activation, whereas in BALB/c macrophages a gene expression pattern consistent with an intermediate inflammatory response was observed.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Disease Models, Animal
  • Female
  • Inflammation Mediators
  • Leishmania guyanensis / physiology
  • Leishmaniasis / genetics
  • Leishmaniasis / metabolism*
  • Macrophages, Peritoneal / metabolism*
  • Macrophages, Peritoneal / parasitology
  • Mice
  • Mice, Inbred BALB C
  • Mice, Inbred C57BL
  • RNA-Seq
  • Transcriptome*

Substances

  • Inflammation Mediators

Grants and funding

Financial support was provided by the Secretaria Nacional de Ciencia, Tecnología e Innovación (SENACYT), Panamá, (Grant number NI-03-2017 to P.L.F. and L.H.), and Sistema Nacional de Investigación (SNI), Panamá, (Grant numbers SNI-142-2018 to P.L.F; SNI-169-2018 to C.M.R. and SNI-09-2020 to R.L.). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.