Doxorubicin-Induced Cardiotoxicity Is Mediated by Neutrophils Through Release of Neutrophil Elastase

Authors

Anchit Bhagat
Pradeep Shrestha
Prince Jeyabal
Zhanglong Peng
Stephanie S Watowich
Eugenie S Kleinerman

Publication Date

1-1-2022

Journal

Frontiers in Oncology

DOI

10.3389/fonc.2022.947604

PMID

36033503

PMCID

PMC9400062

PubMedCentral® Posted Date

8-10-2022

PubMedCentral® Full Text Version

Post-print

Abstract

The mechanisms by which Doxorubicin (Dox) causes acute and late cardiotoxicity are not completely understood. One understudied area is the innate immune response, and in particular the role of neutrophils in Dox-induced cardiotoxicity. Here, using echocardiography, flow cytometry and immunofluorescence staining, we demonstrated increased infiltration of neutrophils that correlated with decreased heart function, disruption of vascular structures and increased collagen deposition in the heart after Dox treatment. Depleting neutrophils protected the heart from Dox-induced cardiotoxicity and changes in vascular structure. Furthermore, our data using neutrophil elastase (NE) knock-out mice and the NE inhibitor AZD9668 suggest that neutrophils cause this damage by releasing NE and that inhibiting NE can prevent Dox-induced cardiotoxicity. This work shows the role of neutrophils and NE in Doxorubicin-induced cardiotoxicity for the first time and suggests a new possible therapeutic intervention.

Published Open-Access

yes

Recommended Citation

Bhagat, Anchit; Shrestha, Pradeep; Jeyabal, Prince; et al., "Doxorubicin-Induced Cardiotoxicity Is Mediated by Neutrophils Through Release of Neutrophil Elastase" (2022). Faculty, Staff and Student Publications. 4592.
https://digitalcommons.library.tmc.edu/uthgsbs_docs/4592