TY - JOUR
T1 - Doxorubicin-induced cardiotoxicity is mediated by neutrophils through release of neutrophil elastase
AU - Bhagat, Anchit
AU - Shrestha, Pradeep
AU - Jeyabal, Prince
AU - Peng, Zhanglong
AU - Watowich, Stephanie S.
AU - Kleinerman, Eugenie S.
N1 - Publisher Copyright:
Copyright © 2022 Bhagat, Shrestha, Jeyabal, Peng, Watowich and Kleinerman.
PY - 2022/8/10
Y1 - 2022/8/10
N2 - 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.
AB - 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.
KW - cardio-oncology
KW - cardiotoxicity after chemotherapy
KW - doxorubicin
KW - neutrophil elastase inhibition
KW - neutrophils
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U2 - 10.3389/fonc.2022.947604
DO - 10.3389/fonc.2022.947604
M3 - Article
C2 - 36033503
AN - SCOPUS:85136822134
SN - 2234-943X
VL - 12
JO - Frontiers in Oncology
JF - Frontiers in Oncology
M1 - 947604
ER -