Differential cardiomyocyte transcriptomic remodeling during in vitro Trypanosoma cruzi infection using laboratory strains provides implications on pathogenic host responses

Author:

Candray-Medina Katherine-Sofia,Nakagama YuORCID,Ito Masamichi,Nakagama Shun,Tshibangu-Kabamba Evariste,Takeda Norihiko,Sugiura Yuki,Nitahara Yuko,Michimuko-Nagahara Yu,Kaku Natsuko,Onizuka Yoko,Arias Carmen-Elena,Mejia Maricela,Alas Karla,Peña Susana,Maejima Yasuhiro,Komuro Issei,Nakajima-Shimada Junko,Kido Yasutoshi

Abstract

Abstract Background Chagas disease can lead to life-threatening cardiac manifestations. Regional factors, including genetic characteristics of circulating Trypanosoma cruzi (T. cruzi), have attracted attention as likely determinants of Chagas disease phenotypic expression and Chagas cardiomyopathy (CCM) progression. Our objective was to elucidate the differential transcriptomic signatures of cardiomyocytes resulting from infection with genetically discrete T. cruzi strains and explore their relationships with CCM pathogenesis and progression. Methods HL-1 rodent cardiomyocytes were infected with T. cruzi trypomastigotes of the Colombian, Y, or Tulahuen strain. RNA was serially isolated post-infection for microarray analysis. Enrichment analyses of differentially expressed genes (fold-change ≥ 2 or ≤ 0.5) highlighted over-represented biological pathways. Intracellular levels of reactive oxygen species (ROS) were compared between T. cruzi-infected and non-infected HL-1 cardiomyocytes. Results We found that oxidative stress-related gene ontology terms (GO terms), ‘Hypertrophy model’, ‘Apoptosis’, and ‘MAPK signaling’ pathways (all with P < 0.01) were upregulated. ‘Glutathione and one-carbon metabolism’ pathway, and ‘Cellular nitrogen compound metabolic process’ GO term (all with P < 0.001) were upregulated exclusively in the cardiomyocytes infected with the Colombian/Y strains. Mean intracellular levels of ROS were significantly higher in the T. cruzi-infected cardiomyocytes compared to the non-infected (P < 0.0001). Conclusions The upregulation of oxidative stress-related and hypertrophic pathways constitutes the universal hallmarks of the cardiomyocyte response elicited by T. cruzi infection. Nitrogen metabolism upregulation and glutathione metabolism imbalance may implicate a relationship between nitrosative stress and poor oxygen radicals scavenging in the unique pathophysiology of Chagas cardiomyopathy.

Funder

Japan Agency for Medical Research and Development

Japan Society for the Promotion of Science

Platform for advanced genome science

Publisher

Springer Science and Business Media LLC

Subject

Infectious Diseases,Public Health, Environmental and Occupational Health

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