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Mechanism of Targeted Cancer Therapeutics-Induced Cardiotoxicity
Mechanism of Targeted Cancer Therapeutics-Induced Cardiotoxicity
Mechanism of Targeted Cancer Therapeutics-Induced Cardiotoxicity

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103616
ISBN  
9798293829019
DDC  
616.079
저자명  
Toro-Cora, Angelica.
서명/저자  
Mechanism of Targeted Cancer Therapeutics-Induced Cardiotoxicity
발행사항  
[Sl] : The University of Alabama at Birmingham, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
158 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Lal, Hind;Verma, Suresh K.
학위논문주기  
Thesis (Ph.D.)--The University of Alabama at Birmingham, 2025.
초록/해제  
요약Targeted cancer therapies are known to cause cardiovascular (CV) complications in human patients. Agents such as osimertinib, a tyrosine kinase inhibitor (TKI), as well as immune checkpoint inhibitors (ICIs) have been demonstrated to induce severe cardiotoxicities, including heart failure and myocarditis. Nevertheless, the mechanisms of TKIs and ICIs-induced cardiotoxicity remain poorly understood. Herein, we developed the first in vivo preclinical model of osimertinib-induced cardiotoxicity using a transverse aortic constriction (TAC) mouse model. Osimertinib-treated mice displayed severe cardiac dysfunction, elevated markers of heart failure and fibrosis, and failed to undergo compensatory hypertrophic remodeling, resulting in cardiomyocyte death. Mechanistically, we identified suppression of ERK/AKT prosurvival signaling, mitochondrial dysfunction, and activation of Bax/Bcl-xl apoptosis pathway. FDA-approved HDAC inhibitor Vorinostat (SAHA), restored cardiac function and cell survival while improving osimertinib's efficacy in non-small cell lung cancer (NSCLC)-derived PC9 cells. In a separate set of studies, we examined ICIs-associated myocarditis employing a myeloid-specific programmed death-ligand (PD-L1) knockout (KO) mice. Deletion of PD-L1 led to early-onset cardiac dysfunction, systemic inflammation, increased infiltration of CCR2+ pro-inflammatory macrophages, and enhanced T cell activation, revealing a critical immunoregulatory role for myeloid PD-L1 in maintaining cardiac homeostasis. Our findings define the mechanisms of cardiotoxicity induced by targeted therapies and highlight histone deacetylase (HDAC) inhibitions and myeloid-specific immune modulation as potential targeted strategies to mitigate treatment-related cardiac events.
일반주제명  
Immunology
일반주제명  
Cellular biology
일반주제명  
Oncology
키워드  
Targeted cancer therapies
키워드  
Cardiovascular
키워드  
Tyrosine kinase inhibitor
키워드  
Immune checkpoint inhibitor
기타저자  
The University of Alabama at Birmingham Cellular and Molecular Physiology
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.079
■1001  ▼aToro-Cora,  Angelica.
■24510▼aMechanism  of  Targeted  Cancer  Therapeutics-Induced  Cardiotoxicity
■260    ▼a[Sl]▼bThe  University  of  Alabama  at  Birmingham▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a158  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Lal,  Hind;Verma,  Suresh  K.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Alabama  at  Birmingham,  2025.
■520    ▼aTargeted  cancer  therapies  are  known  to  cause  cardiovascular  (CV)  complications  in  human  patients.  Agents  such  as  osimertinib,  a  tyrosine  kinase  inhibitor  (TKI),  as  well  as  immune  checkpoint  inhibitors  (ICIs)  have  been  demonstrated  to  induce  severe  cardiotoxicities,  including  heart  failure  and  myocarditis.  Nevertheless,  the  mechanisms  of  TKIs  and  ICIs-induced  cardiotoxicity  remain  poorly  understood.  Herein,  we  developed  the  first  in  vivo  preclinical  model  of  osimertinib-induced  cardiotoxicity  using  a  transverse  aortic  constriction  (TAC)  mouse  model.  Osimertinib-treated  mice  displayed  severe  cardiac  dysfunction,  elevated  markers  of  heart  failure  and  fibrosis,  and  failed  to  undergo  compensatory  hypertrophic  remodeling,  resulting  in  cardiomyocyte  death.  Mechanistically,  we  identified  suppression  of  ERK/AKT  prosurvival  signaling,  mitochondrial  dysfunction,  and  activation  of  Bax/Bcl-xl  apoptosis  pathway.  FDA-approved  HDAC  inhibitor  Vorinostat  (SAHA),  restored  cardiac  function  and  cell  survival  while  improving  osimertinib's  efficacy  in  non-small  cell  lung  cancer  (NSCLC)-derived  PC9  cells.  In  a  separate  set  of  studies,  we  examined  ICIs-associated  myocarditis  employing  a  myeloid-specific  programmed  death-ligand  (PD-L1)  knockout  (KO)  mice.  Deletion  of  PD-L1  led  to  early-onset  cardiac  dysfunction,  systemic  inflammation,  increased  infiltration  of  CCR2+  pro-inflammatory  macrophages,  and  enhanced  T  cell  activation,  revealing  a  critical  immunoregulatory  role  for  myeloid  PD-L1  in  maintaining  cardiac  homeostasis.  Our  findings  define  the  mechanisms  of  cardiotoxicity  induced  by  targeted  therapies  and  highlight  histone  deacetylase  (HDAC)  inhibitions  and  myeloid-specific  immune  modulation  as  potential  targeted  strategies  to  mitigate  treatment-related  cardiac  events.
■590    ▼aSchool  code:  0005.
■650  4▼aImmunology
■650  4▼aCellular  biology
■650  4▼aOncology
■653    ▼aTargeted  cancer  therapies
■653    ▼aCardiovascular
■653    ▼aTyrosine  kinase  inhibitor
■653    ▼aImmune  checkpoint  inhibitor
■690    ▼a0982
■690    ▼a0379
■690    ▼a0992
■690    ▼a0769
■71020▼aThe  University  of  Alabama  at  Birmingham▼bCellular  and  Molecular  Physiology.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0005
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357907▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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