Differentially expressed gene profile of acanthamoeba castellanii induced by an endosymbiont legionella pneumophila

Eun Kyung Moon, So Min Park, Ki Back Chu, Fu Shi Quan, Hyun Hee Kong

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Legionella pneumophila is an opportunistic pathogen that survives and proliferates within protists such as Acanthamoeba spp. in environment. However, intracellular pathogenic endosymbiosis and its implications within Acan-thamoeba spp. remain poorly understood. In this study, RNA sequencing analysis was used to investigate transcriptional changes in A. castellanii in response to L. pneumophila infection. Based on RNA sequencing data, we identified 1,211 upregulated genes and 1,131 downregulated genes in A. castellanii infected with L. pneumophila for 12 hr. After 24 hr, 1,321 upregulated genes and 1,379 downregulated genes were identified. Gene ontology (GO) analysis revealed that L. pneumophila endosymbiosis enhanced hydrolase activity, catalytic activity, and DNA binding while reducing oxidoreduc-tase activity in the molecular function (MF) domain. In particular, multiple genes associated with the GO term ‘integral component of membrane’ were downregulated during endosymbiosis. The endosymbiont also induced differential expression of various methyltransferases and acetyltransferases in A. castellanii. Findings herein are may significantly con-tribute to understanding endosymbiosis of L. pneumophila within A. castellanii.

Original languageEnglish
Pages (from-to)67-75
Number of pages9
JournalKorean Journal of Parasitology
Issue number1
Publication statusPublished - 2021


  • Acanthamoeba
  • Differential gene expression
  • Endosymbiosis
  • Legionella


Dive into the research topics of 'Differentially expressed gene profile of acanthamoeba castellanii induced by an endosymbiont legionella pneumophila'. Together they form a unique fingerprint.

Cite this