본문

서브메뉴

Immunologic Response to a CCL21-Gene Modified Dendritic Cell Vaccine in Non-Small Cell Lung Cancer
Immunologic Response to a CCL21-Gene Modified Dendritic Cell Vaccine in Non-Small Cell Lun...
Immunologic Response to a CCL21-Gene Modified Dendritic Cell Vaccine in Non-Small Cell Lung Cancer

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104707
ISBN  
9798286432806
DDC  
616.99
저자명  
Oh, Michael Saeyoung.
서명/저자  
Immunologic Response to a CCL21-Gene Modified Dendritic Cell Vaccine in Non-Small Cell Lung Cancer
발행사항  
[Sl] : University of California, Los Angeles, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
138 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Dubinett, Steven M.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2025.
초록/해제  
요약Non-small cell lung cancer (NSCLC) remains a leading cause of cancer mortality, despite recent advances in immune checkpoint inhibitor (ICI) therapy. ICIs have reshaped the therapeutic paradigm for NSCLC by offering durable clinical benefit in a subset of patients, but a substantial portion of patients fail to respond or develop tumor resistance. Immune escape mechanisms include impaired presentation of tumor antigens, limited T cell infiltration into the tumor, and immunosuppressive signals in the tumor microenvironment (TME). One potential strategy to overcome these factors involves improving the activity of antigen-presenting cells (APCs), such as dendritic cells (DCs), that are able to present tumor antigens and initiate tumor-specific T cell activation. DCs can be administered as an in situ vaccine to bolster APC functions in the TME, and they can be further engineered to express chemokines such as CCL21 in order to promote T cell trafficking into the tumor.In this context, we completed a phase I clinical trial combining an autologous CCL21-gene modified dendritic cell (CCL21-DC) vaccine with pembrolizumab in patients with advanced stage NSCLC with the goal of overcoming resistance in ICI-refractory disease. There were no objective responses observed in this trial, but there was a 36.8% rate of disease control, including a case of disease stability lasting over 1 year as well as a case with post-vaccine resolution of an intracranial metastatic lesion. To better understand the immunologic impact of the trial therapy, we first performed a comprehensive characterization of the CCL21-DC vaccine product, which revealed significant cellular heterogeneity and variable CCL21 secretion. These findings suggested limitations to the DC vaccine manufacturing process that may adversely affect the consistency of therapeutic response. We next performed immune monitoring studies using longitudinal tumor biopsies and peripheral blood samples from patients on the clinical trial. We found that the CCL21-DC vaccine plus pembrolizumab reduced mutational intratumor heterogeneity (ITH) in patients who experienced disease control, indicative of active tumor immunoediting. The therapy also induced an increase in tumor infiltration by T cells and in particular early memory CD4+ T cells capable of migrating along a CCL21 gradient. Tumor samples with disease control exhibited greater T cell receptor (TCR) repertoire diversity and increased expansion of novel intratumoral clones. The immunologic changes within the tumor, however, were not consistently reflected in systemic immune signatures and were often transient in nature. Finally, in anticipation of further mechanistic studies of the CCL21-DC vaccine, we developed a murine NSCLC model consisting of clonal cell lines that can be used to modulate ITH and track clonal dynamics in response to immunotherapies.Our findings overall suggest that the CCL21-DC vaccine can promote T cell infiltration and clonal diversification in the tumor, but there were limitations to the durability and depth of the resulting immunologic response. These results support further investigation of DC vaccine design and application as a strategy to enhance immunotherapy efficacy in NSCLC.
일반주제명  
Oncology
일반주제명  
Immunology
일반주제명  
Cellular biology
키워드  
CCL21
키워드  
Dendritic cells
키워드  
Immune checkpoint inhibitors
키워드  
Tumor microenvironment
기타저자  
University of California, Los Angeles Molecular Biology 0573
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017358471
■00520260202104707
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798286432806
■035    ▼a(MiAaPQ)AAI32117396
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.99
■1001  ▼aOh,  Michael  Saeyoung.
■24510▼aImmunologic  Response  to  a  CCL21-Gene  Modified  Dendritic  Cell  Vaccine  in  Non-Small  Cell  Lung  Cancer
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a138  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Dubinett,  Steven  M.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2025.
■520    ▼aNon-small  cell  lung  cancer  (NSCLC)  remains  a  leading  cause  of  cancer  mortality,  despite  recent  advances  in  immune  checkpoint  inhibitor  (ICI)  therapy.  ICIs  have  reshaped  the  therapeutic  paradigm  for  NSCLC  by  offering  durable  clinical  benefit  in  a  subset  of  patients,  but  a  substantial  portion  of  patients  fail  to  respond  or  develop  tumor  resistance.  Immune  escape  mechanisms  include  impaired  presentation  of  tumor  antigens,  limited  T  cell  infiltration  into  the  tumor,  and  immunosuppressive  signals  in  the  tumor  microenvironment  (TME).  One  potential  strategy  to  overcome  these  factors  involves  improving  the  activity  of  antigen-presenting  cells  (APCs),  such  as  dendritic  cells  (DCs),  that  are  able  to  present  tumor  antigens  and  initiate  tumor-specific  T  cell  activation.  DCs  can  be  administered  as  an  in  situ  vaccine  to  bolster  APC  functions  in  the  TME,  and  they  can  be  further  engineered  to  express  chemokines  such  as  CCL21  in  order  to  promote  T  cell  trafficking  into  the  tumor.In  this  context,  we  completed  a  phase  I  clinical  trial  combining  an  autologous  CCL21-gene  modified  dendritic  cell  (CCL21-DC)  vaccine  with  pembrolizumab  in  patients  with  advanced  stage  NSCLC  with  the  goal  of  overcoming  resistance  in  ICI-refractory  disease.  There  were  no  objective  responses  observed  in  this  trial,  but  there  was  a  36.8%  rate  of  disease  control,  including  a  case  of  disease  stability  lasting  over  1  year  as  well  as  a  case  with  post-vaccine  resolution  of  an  intracranial  metastatic  lesion.  To  better  understand  the  immunologic  impact  of  the  trial  therapy,  we  first  performed  a  comprehensive  characterization  of  the  CCL21-DC  vaccine  product,  which  revealed  significant  cellular  heterogeneity  and  variable  CCL21  secretion.  These  findings  suggested  limitations  to  the  DC  vaccine  manufacturing  process  that  may  adversely  affect  the  consistency  of  therapeutic  response.  We  next  performed  immune  monitoring  studies  using  longitudinal  tumor  biopsies  and  peripheral  blood  samples  from  patients  on  the  clinical  trial.  We  found  that  the  CCL21-DC  vaccine  plus  pembrolizumab  reduced  mutational  intratumor  heterogeneity  (ITH)  in  patients  who  experienced  disease  control,  indicative  of  active  tumor  immunoediting.  The  therapy  also  induced  an  increase  in  tumor  infiltration  by  T  cells  and  in  particular  early  memory  CD4+  T  cells  capable  of  migrating  along  a  CCL21  gradient.  Tumor  samples  with  disease  control  exhibited  greater  T  cell  receptor  (TCR)  repertoire  diversity  and  increased  expansion  of  novel  intratumoral  clones.  The  immunologic  changes  within  the  tumor,  however,  were  not  consistently  reflected  in  systemic  immune  signatures  and  were  often  transient  in  nature.  Finally,  in  anticipation  of  further  mechanistic  studies  of  the  CCL21-DC  vaccine,  we  developed  a  murine  NSCLC  model  consisting  of  clonal  cell  lines  that  can  be  used  to  modulate  ITH  and  track  clonal  dynamics  in  response  to  immunotherapies.Our  findings  overall  suggest  that  the  CCL21-DC  vaccine  can  promote  T  cell  infiltration  and  clonal  diversification  in  the  tumor,  but  there  were  limitations  to  the  durability  and  depth  of  the  resulting  immunologic  response.  These  results  support  further  investigation  of  DC  vaccine  design  and  application  as  a  strategy  to  enhance  immunotherapy  efficacy  in  NSCLC.
■590    ▼aSchool  code:  0031.
■650  4▼aOncology
■650  4▼aImmunology
■650  4▼aCellular  biology
■653    ▼aCCL21
■653    ▼aDendritic  cells
■653    ▼aImmune  checkpoint  inhibitors
■653    ▼aTumor  microenvironment
■690    ▼a0992
■690    ▼a0982
■690    ▼a0379
■71020▼aUniversity  of  California,  Los  Angeles▼bMolecular  Biology  0573.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358471▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF16048 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.