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CAR-T Cell Therapy for Triple-Negative Breast Cancer: Preclinical Insights for Immunotherapy Optimization in Obesity
CAR-T Cell Therapy for Triple-Negative Breast Cancer: Preclinical Insights for Immunothera...
CAR-T Cell Therapy for Triple-Negative Breast Cancer: Preclinical Insights for Immunotherapy Optimization in Obesity

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105307
ISBN  
9798270290399
DDC  
616.99
저자명  
Malian, Hannah Marie.
서명/저자  
CAR-T Cell Therapy for Triple-Negative Breast Cancer: Preclinical Insights for Immunotherapy Optimization in Obesity
발행사항  
[Sl] : The University of North Carolina at Chapel Hill, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
111 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-07, Section: B.
주기사항  
Advisor: Hursting, Stephen.
학위논문주기  
Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
초록/해제  
요약Immunotherapy is a type of treatment that harnesses a patient's immune system to target diseases like cancer. Chimeric antigen receptor (CAR)-T cell therapy relies on T cells engineered to target antigens expressed on cancer cells and has radically improved treatment for some hematological cancers and is gaining traction in solid tumors. For CAR-T cell therapy to be effective, cancers must express the appropriate antigen. B7-H3 is an immunosuppressive protein often expressed by cancer cells that is targetable with B7-H3.CAR-T cell therapy. Obesity-derived inflammatory signals promote tumor growth, dampen antitumor immunity, and promote expression of immunosuppressive proteins. However, the potential for obesity to alter efficacy of CAR-T cell therapy is unknown. Hence, we sought to understand whether obesity affects activity and durability of B7-H3.CAR-T cell therapy, and whether obesity relies on the immunosuppressive protein, B7-H3, for triple-negative breast cancer (TNBC) growth.We utilized preclinical models to determine the relationship between obesity-associated cytokine signaling and B7-H3. We discovered that cytokines like TNF and IFNγ upregulate B7-H3 in both human and murine TNBC cell lines. We used B7-H3 suppressed cells to determine that obesity promotes TNBC growth by suppressing antitumor immunity through B7-H3 expression. Next, we demonstrated that obesity impairs both B7-H3.CAR-T cell therapy activity and durability. We showed that B7-H3.CAR-T cell therapy can control tumor growth in a syngeneic model of TNBC and that despite similar in vitro cell killing activity, T cells from obese mice harbor important transcriptomic and phenotypic differences. We also show that obesity impairs the formation of tissue-resident memory-like T cells and that obesity is detrimental to survival following rechallenge. Taken together this work demonstrates that obesity is an important but understudied determinant of B7-H3.CAR-T cell therapy response and durability, thus paving the way for future research to study obesity as a variable in large scale clinical immunotherapy settings.
일반주제명  
Oncology
일반주제명  
Biochemistry
일반주제명  
Public health
키워드  
Obesity
키워드  
Immune system
키워드  
Cancers
키워드  
Cytokine signaling
키워드  
T cells
기타저자  
The University of North Carolina at Chapel Hill Nutrition
기본자료저록  
Dissertations Abstracts International. 87-07B.
전자적 위치 및 접속  
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MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.99
■1001  ▼aMalian,  Hannah  Marie.
■24510▼aCAR-T  Cell  Therapy  for  Triple-Negative  Breast  Cancer:  Preclinical  Insights  for  Immunotherapy  Optimization  in  Obesity
■260    ▼a[Sl]▼bThe  University  of  North  Carolina  at  Chapel  Hill▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a111  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-07,  Section:  B.
■500    ▼aAdvisor:  Hursting,  Stephen.
■5021  ▼aThesis  (Ph.D.)--The  University  of  North  Carolina  at  Chapel  Hill,  2025.
■520    ▼aImmunotherapy  is  a  type  of  treatment  that  harnesses  a  patient's  immune  system  to  target  diseases  like  cancer.  Chimeric  antigen  receptor  (CAR)-T  cell  therapy  relies  on  T  cells  engineered  to  target  antigens  expressed  on  cancer  cells  and  has  radically  improved  treatment  for  some  hematological  cancers  and  is  gaining  traction  in  solid  tumors.  For  CAR-T  cell  therapy  to  be  effective,  cancers  must  express  the  appropriate  antigen.  B7-H3  is  an  immunosuppressive  protein  often  expressed  by  cancer  cells  that  is  targetable  with  B7-H3.CAR-T  cell  therapy.  Obesity-derived  inflammatory  signals  promote  tumor  growth,  dampen  antitumor  immunity,  and  promote  expression  of  immunosuppressive  proteins.  However,  the  potential  for  obesity  to  alter  efficacy  of  CAR-T  cell  therapy  is  unknown.  Hence,  we  sought  to  understand  whether  obesity  affects  activity  and  durability  of  B7-H3.CAR-T  cell  therapy,  and  whether  obesity  relies  on  the  immunosuppressive  protein,  B7-H3,  for  triple-negative  breast  cancer  (TNBC)  growth.We  utilized  preclinical  models  to  determine  the  relationship  between  obesity-associated  cytokine  signaling  and  B7-H3.  We  discovered  that  cytokines  like  TNF  and  IFNγ  upregulate  B7-H3  in  both  human  and  murine  TNBC  cell  lines.  We  used  B7-H3  suppressed  cells  to  determine  that  obesity  promotes  TNBC  growth  by  suppressing  antitumor  immunity  through  B7-H3  expression.  Next,  we  demonstrated  that  obesity  impairs  both  B7-H3.CAR-T  cell  therapy  activity  and  durability.  We  showed  that  B7-H3.CAR-T  cell  therapy  can  control  tumor  growth  in  a  syngeneic  model  of  TNBC  and  that  despite  similar  in  vitro  cell  killing  activity,  T  cells  from obese  mice  harbor  important  transcriptomic  and  phenotypic  differences.  We  also  show  that  obesity  impairs  the  formation  of  tissue-resident  memory-like  T  cells  and  that  obesity  is  detrimental  to  survival  following  rechallenge.  Taken  together  this  work  demonstrates  that  obesity  is  an  important  but  understudied  determinant  of  B7-H3.CAR-T  cell  therapy  response  and  durability,  thus  paving  the  way  for  future  research  to  study  obesity  as  a  variable  in  large  scale  clinical  immunotherapy  settings.
■590    ▼aSchool  code:  0153.
■650  4▼aOncology
■650  4▼aBiochemistry
■650  4▼aPublic  health
■653    ▼aObesity
■653    ▼aImmune  system
■653    ▼aCancers
■653    ▼aCytokine  signaling
■653    ▼aT  cells
■690    ▼a0992
■690    ▼a0487
■690    ▼a0573
■71020▼aThe  University  of  North  Carolina  at  Chapel  Hill▼bNutrition.
■7730  ▼tDissertations  Abstracts  International▼g87-07B.
■790    ▼a0153
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360117▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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