본문

서브메뉴

Complex N-Glycosylation in Anti-tumor Immunity
Complex N-Glycosylation in Anti-tumor Immunity
Complex N-Glycosylation in Anti-tumor Immunity

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152001
ISBN  
9798384024613
DDC  
616.99
저자명  
Hollander, Erin E.
서명/저자  
Complex N-Glycosylation in Anti-tumor Immunity
발행사항  
[Sl] : University of Pennsylvania, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
117 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
주기사항  
Advisor: Stanger, Ben Z.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2024.
초록/해제  
요약Pancreatic ductal adenocarcinoma (PDAC) is currently the third leading cause of cancer-related death in the United States. The five-year survival rate of thirteen percent can be attributed to a difficulty in early detection and a lack of effective treatments. Tumor-associated glycans represent a potential anti-tumor target for two reasons: (i) protein glycosylation is known to play a role in tumor progression, and (ii) alternatively glycosylated proteins may function as tumor neoantigens. The glycosyltransferase Mgat5 catalyzes the formation of β1,6-N-acetylglucosamine branched glycans, and overexpression has been implicated in tumor growth and metastasis in multiple cancers. Using a panel of clonal cell lines that recapitulate the immune heterogeneity of PDAC, we found that knockout of Mgat5 led to a significant and replicable decrease in tumor growth. This occurred not only in immune hot, "T cell-inflamed" tumors, but also the immunosuppressive "non-T cell-inflamed" tumors. Within these Mgat5 knockout tumors, CD8+ T cell infiltration was increased, and the cytotoxicity of both CD4+ and CD8+ T cells as measured by TNF⍺, IFNγ, and granzyme B content was increased in the draining lymph nodes of tumors. Clearance of the knockout tumors was found to be dependent upon functional CD4+ and CD8+ T cells as well as dendritic cells, with NK cells playing only an early role in immune clearance. Mechanistically, Mgat5 KO cells were found to have significantly increased sensitivity to cell death via the TNF⍺ or TRAIL pathway, with death proceeding through either the necroptotic or apoptotic pathways respectively. Taken together, these results are consistent with a model in which loss of Mgat5-mediated N-glycans increases the sensitivity of tumors to T cell killing through lowering the threshold for engagement of the extrinsic cell death pathway and allowing for the formation of a durable immune response. Finally, Mgat5 knockout tumors treated with immune checkpoint blockade had significantly decreased tumor size and increased survival over controls, suggesting Mgat5 has potential as a novel target for pancreatic cancer.
일반주제명  
Oncology
일반주제명  
Cellular biology
일반주제명  
Immunology
일반주제명  
Biochemistry
키워드  
Cancer
키워드  
Glycosylation
키워드  
GnT-V
키워드  
MGAT5
키워드  
Pancreas
기타저자  
University of Pennsylvania Cell and Molecular Biology
기본자료저록  
Dissertations Abstracts International. 86-02B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008250123s2024        us                              c    eng  d
■001000017162343
■00520250211152001
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798384024613
■035    ▼a(MiAaPQ)AAI31329991
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.99
■1001  ▼aHollander,  Erin  E.
■24510▼aComplex  N-Glycosylation  in  Anti-tumor  Immunity
■260    ▼a[Sl]▼bUniversity  of  Pennsylvania▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a117  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-02,  Section:  B.
■500    ▼aAdvisor:  Stanger,  Ben  Z.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2024.
■520    ▼aPancreatic  ductal  adenocarcinoma  (PDAC)  is  currently  the  third  leading  cause  of  cancer-related  death  in  the  United  States.  The  five-year  survival  rate  of  thirteen  percent  can  be  attributed  to  a  difficulty  in  early  detection  and  a  lack  of  effective  treatments.  Tumor-associated  glycans  represent  a  potential  anti-tumor  target  for  two  reasons:  (i)  protein  glycosylation  is  known  to  play  a  role  in  tumor  progression,  and  (ii)  alternatively  glycosylated  proteins  may  function  as  tumor  neoantigens.  The  glycosyltransferase  Mgat5  catalyzes  the  formation  of  β1,6-N-acetylglucosamine  branched  glycans,  and  overexpression  has  been  implicated  in  tumor  growth  and  metastasis  in  multiple  cancers.  Using  a  panel  of  clonal  cell  lines  that  recapitulate  the  immune  heterogeneity  of  PDAC,  we  found  that  knockout  of  Mgat5  led  to  a  significant  and  replicable  decrease  in  tumor  growth.  This  occurred  not  only  in  immune  hot,  "T  cell-inflamed"  tumors,  but  also  the  immunosuppressive  "non-T  cell-inflamed"  tumors.  Within  these  Mgat5  knockout  tumors,  CD8+  T  cell  infiltration  was  increased,  and  the  cytotoxicity  of  both  CD4+  and  CD8+  T  cells  as  measured  by  TNF⍺,  IFNγ,  and  granzyme  B  content  was  increased  in  the  draining  lymph  nodes  of  tumors.  Clearance  of  the  knockout  tumors  was  found  to  be  dependent  upon  functional  CD4+  and  CD8+  T  cells  as  well  as  dendritic  cells,  with  NK  cells  playing  only  an  early  role  in  immune  clearance.  Mechanistically,  Mgat5  KO  cells  were  found  to  have  significantly  increased  sensitivity  to  cell  death  via  the  TNF⍺  or  TRAIL  pathway,  with  death  proceeding  through  either  the  necroptotic  or  apoptotic  pathways  respectively.  Taken  together,  these  results  are  consistent  with  a  model  in  which  loss  of  Mgat5-mediated  N-glycans  increases  the  sensitivity  of  tumors  to  T  cell  killing  through  lowering  the  threshold  for  engagement  of  the  extrinsic  cell  death  pathway  and  allowing  for  the  formation  of  a  durable  immune  response.  Finally,  Mgat5  knockout  tumors  treated  with  immune  checkpoint  blockade  had  significantly  decreased  tumor  size  and  increased  survival  over  controls,  suggesting  Mgat5  has  potential  as  a  novel  target  for  pancreatic  cancer.
■590    ▼aSchool  code:  0175.
■650  4▼aOncology
■650  4▼aCellular  biology
■650  4▼aImmunology
■650  4▼aBiochemistry
■653    ▼aCancer
■653    ▼aGlycosylation
■653    ▼aGnT-V
■653    ▼aMGAT5
■653    ▼aPancreas
■690    ▼a0992
■690    ▼a0379
■690    ▼a0982
■690    ▼a0487
■71020▼aUniversity  of  Pennsylvania▼bCell  and  Molecular  Biology.
■7730  ▼tDissertations  Abstracts  International▼g86-02B.
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162343▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

Preview

Export

ChatGPT Discussion

AI Recommended Related Books


    New Books MORE
    Statistics for the past 3 years. Go to brief

    Подробнее информация.

    • Бронирование
    • не существует
    • моя папка
    • Первый запрос зрения
    • Non-Book Loan Application
    • Nighttime Book Loan Application
    материал
    Reg No. Количество платежных Местоположение статус Ленд информации
    TF12724 전자도서 대출가능 My Folder 부재도서신고 비도서대출신청 야간 도서대출신청

    * Бронирование доступны в заимствований книги. Чтобы сделать предварительный заказ, пожалуйста, нажмите кнопку бронирование

    Books borrowed together with this book

    Related Popular Books

    Available after logging in.