Abstract | RATIONALE: Viral myocarditis is a life-threatening illness that may lead to heart failure or cardiac arrhythmias. A major causative agent for viral myocarditis is the B3 strain of coxsackievirus, a positive-sense RNA enterovirus. However, human cardiac tissues are difficult to procure in sufficient enough quantities for studying the mechanisms of cardiac-specific viral infection. OBJECTIVE: This study examined whether human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) could be used to model the pathogenic processes of coxsackievirus-induced viral myocarditis and to screen antiviral therapeutics for efficacy. METHODS AND RESULTS: hiPSC-CMs were infected with a luciferase-expressing coxsackievirus B3 strain (CVB3-Luc). Brightfield microscopy, immunofluorescence, and calcium imaging were used to characterize virally infected hiPSC-CMs for alterations in cellular morphology and calcium handling. Viral proliferation in hiPSC-CMs was quantified using bioluminescence imaging. Antiviral compounds including interferonβ1, ribavirin, pyrrolidine dithiocarbamate, and fluoxetine were tested for their capacity to abrogate CVB3-Luc proliferation in hiPSC-CMs in vitro. The ability of these compounds to reduce CVB3-Luc proliferation in hiPSC-CMs was consistent with reported drug effects in previous studies. Mechanistic analyses via gene expression profiling of hiPSC-CMs infected with CVB3-Luc revealed an activation of viral RNA and protein clearance pathways after interferonβ1 treatment. CONCLUSIONS:
|
Authors | Arun Sharma, Caleb Marceau, Ryoko Hamaguchi, Paul W Burridge, Kuppusamy Rajarajan, Jared M Churko, Haodi Wu, Karim I Sallam, Elena Matsa, Anthony C Sturzu, Yonglu Che, Antje Ebert, Sebastian Diecke, Ping Liang, Kristy Red-Horse, Jan E Carette, Sean M Wu, Joseph C Wu |
Journal | Circulation research
(Circ Res)
Vol. 115
Issue 6
Pg. 556-66
(Aug 29 2014)
ISSN: 1524-4571 [Electronic] United States |
PMID | 25015077
(Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)
|
Copyright | © 2014 American Heart Association, Inc. |
Chemical References |
- Antiviral Agents
- RNA, Viral
- Calcium
|
Topics |
- Antiviral Agents
(pharmacology, therapeutic use)
- Calcium
(metabolism)
- Cell Proliferation
- Cells, Cultured
- Drug Evaluation, Preclinical
- Enterovirus B, Human
(isolation & purification)
- Enterovirus Infections
(drug therapy, metabolism)
- Humans
- In Vitro Techniques
- Models, Cardiovascular
- Myocarditis
(drug therapy, metabolism, virology)
- Myocytes, Cardiac
(drug effects, pathology, virology)
- Pluripotent Stem Cells
(drug effects, pathology, virology)
- RNA, Viral
(metabolism)
- Treatment Outcome
|