본문

서브메뉴

Fleet-Footed Soldiers: Circulating Memory CD8 T Cells Quickly Enter the Fray During Malarial and Bacterial Infection of the Liver- [electronic resource]
Fleet-Footed Soldiers: Circulating Memory CD8 T Cells Quickly Enter the Fray During Malarial and Bacterial Infection of the Liver- [electronic resource]

상세정보

자료유형  
 학위논문
Control Number  
0016931564
International Standard Book Number  
9798379785277
Dewey Decimal Classification Number  
616.079
Main Entry-Personal Name  
Lefebvre, Mitchell Neill.
Publication, Distribution, etc. (Imprint  
[S.l.] : The University of Iowa., 2023
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2023
Physical Description  
1 online resource(134 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
General Note  
Advisor: Harty, John T.
Dissertation Note  
Thesis (Ph.D.)--The University of Iowa, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약The highly vascularized liver may coordinate immune responses to infection or inflammation, and this non-lymphoid tissue is also a key target of clinically relevant pathogens. Chief among these pathogens is Plasmodium, the causative parasite of malaria, a disease that causes hundreds of thousands of deaths annually. The Plasmodium parasite must productively infect the liver before it can progress to potentially deadly blood-stage infection. Other pathogens that may target the liver include the bacteria Listeria monocytogenes and commensal microbes that escape from the gastrointestinal tract to cause sepsis. Antigen-specific memory CD8 T cells may exert control over infectious diseases by killing pathogen-infected host cells. The mechanisms by which memory CD8 T cells clear liver-localized pathogens, however, remain incompletely characterized. These knowledge gaps hinder scientists' and physicians' ability to develop novel treatments for infectious diseases of the liver. My thesis work, therefore, focused on determining if and how subsets of phenotypically and functionally distinct memory CD8 T cells control liver-stage malaria and other infections.Using mouse models of liver-stage malaria, Listeria monocytogenes, and sepsis infections, I demonstrate that antigen-specific circulating effector memory CD8 T cells rapidly enter the malaria- or bacterially infected liver to exert control over the respective pathogen. This T cell recruitment relied on T-cell expressed LFA-1, liver phagocytes, and chemokine signaling. These findings highlighted the importance of considering circulating memory CD8 T cells when developing malaria vaccines. Also apparent in the data were unique differences between memory CD8 T cell recruitment to the liver as compared to other non-lymphoid tissues. These findings suggest that studying CD8 T cell biology in the context of liver infection may offer additional possibilities for combating human disease.I next set out to apply my findings about circulating memory CD8 T cell protective capacity in a translational context. To this end, I developed a murine vaccine strategy for malaria that both more accurately recapitulated human responses to parasite vaccination and generated large numbers of resident and circulating memory CD8 T cells. A mouse-human weight-normalized radiation attenuated sporozoite (RAS) vaccination dose in mice induced partial non-sterilizing immunity to liver-stage malaria, which is similar to a human response to single RAS vaccination. Mice boosted with subunit vaccines based on recombinant attenuated bacterial or viral pathogens expressing liver-stage protective CD8 T cell epitopes increased both the number of memory CD8 T cells and conferred sterilizing immunity to the mice. This immunity was maintained even when the subunit vaccines were delivered intramuscularly, which is more clinically deliverable route than intravenous injection. My findings therefore inform human malaria vaccine development by demonstrating (1) that circulating memory CD8 T cells are a potentially important target during human vaccination efforts and (2) that a single RAS vaccination can be optimized by following it with more readily producible and deliverable subunit booster immunizations.
Subject Added Entry-Topical Term  
Immunology.
Subject Added Entry-Topical Term  
Microbiology.
Subject Added Entry-Topical Term  
Cellular biology.
Index Term-Uncontrolled  
Circulating memory
Index Term-Uncontrolled  
Listeria monocytogenes
Index Term-Uncontrolled  
Liver-stage malaria
Index Term-Uncontrolled  
Sporozoite
Index Term-Uncontrolled  
T cell recruitment
Index Term-Uncontrolled  
Vaccine
Index Term-Uncontrolled  
CD8 T cells
Index Term-Uncontrolled  
Viral pathogens
Added Entry-Corporate Name  
The University of Iowa Immunology
Host Item Entry  
Dissertations Abstracts International. 85-01B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:643846

MARC

 008240221s2023        ulk                      00        kor
■001000016931564
■00520240214100044
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798379785277
■035    ▼a(MiAaPQ)AAI30314395
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.079
■1001  ▼aLefebvre,  Mitchell  Neill.
■24510▼aFleet-Footed  Soldiers:  Circulating  Memory  CD8  T  Cells  Quickly  Enter  the  Fray  During  Malarial  and  Bacterial  Infection  of  the  Liver▼h[electronic  resource]
■260    ▼a[S.l.]▼bThe  University  of  Iowa.  ▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a1  online  resource(134  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-01,  Section:  B.
■500    ▼aAdvisor:  Harty,  John  T.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Iowa,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aThe  highly  vascularized  liver  may  coordinate  immune  responses  to  infection  or  inflammation,  and  this  non-lymphoid  tissue  is  also  a  key  target  of  clinically  relevant  pathogens.  Chief  among  these  pathogens  is  Plasmodium,  the  causative  parasite  of  malaria,  a  disease  that  causes  hundreds  of  thousands  of  deaths  annually.  The  Plasmodium  parasite  must  productively  infect  the  liver  before  it  can  progress  to  potentially  deadly  blood-stage  infection.  Other  pathogens  that  may  target  the  liver  include  the  bacteria  Listeria  monocytogenes  and  commensal  microbes  that  escape  from  the  gastrointestinal  tract  to  cause  sepsis.  Antigen-specific  memory  CD8  T  cells  may  exert  control  over  infectious  diseases  by  killing  pathogen-infected  host  cells.  The  mechanisms  by  which  memory  CD8  T  cells  clear  liver-localized  pathogens,  however,  remain  incompletely  characterized.  These  knowledge  gaps  hinder  scientists'  and  physicians'  ability  to  develop  novel  treatments  for  infectious  diseases  of  the  liver.  My  thesis  work,  therefore,  focused  on  determining  if  and  how  subsets  of  phenotypically  and  functionally  distinct  memory  CD8  T  cells  control  liver-stage  malaria  and  other  infections.Using  mouse  models  of  liver-stage  malaria,  Listeria  monocytogenes,  and  sepsis  infections,  I  demonstrate  that  antigen-specific  circulating  effector  memory  CD8  T  cells  rapidly  enter  the  malaria-  or  bacterially  infected  liver  to  exert  control  over  the  respective  pathogen.  This  T  cell  recruitment  relied  on  T-cell  expressed  LFA-1,  liver  phagocytes,  and  chemokine  signaling.  These  findings  highlighted  the  importance  of  considering  circulating  memory  CD8  T  cells  when  developing  malaria  vaccines.  Also  apparent  in  the  data  were  unique  differences  between  memory  CD8  T  cell  recruitment  to  the  liver  as  compared  to  other  non-lymphoid  tissues.  These  findings  suggest  that  studying  CD8  T  cell  biology  in  the  context  of  liver  infection  may  offer  additional  possibilities  for  combating  human  disease.I next  set  out  to  apply  my  findings  about  circulating  memory  CD8  T  cell  protective  capacity  in  a  translational  context.  To  this  end,  I  developed  a  murine  vaccine  strategy  for  malaria  that  both  more  accurately  recapitulated  human  responses  to  parasite  vaccination  and  generated  large  numbers  of  resident  and  circulating  memory  CD8  T  cells.  A  mouse-human  weight-normalized  radiation  attenuated  sporozoite  (RAS)  vaccination  dose  in  mice  induced  partial  non-sterilizing  immunity  to  liver-stage  malaria,  which  is  similar  to  a  human  response  to  single  RAS  vaccination.  Mice  boosted  with  subunit  vaccines  based  on  recombinant  attenuated  bacterial  or  viral  pathogens  expressing  liver-stage  protective  CD8  T  cell  epitopes  increased  both  the  number  of  memory  CD8  T  cells  and  conferred  sterilizing  immunity  to  the  mice.  This  immunity  was  maintained  even  when  the  subunit  vaccines  were  delivered  intramuscularly,  which  is  more  clinically  deliverable  route  than  intravenous  injection.  My  findings  therefore  inform  human  malaria  vaccine  development  by  demonstrating  (1)  that  circulating  memory  CD8  T  cells  are  a  potentially  important  target  during  human  vaccination  efforts  and  (2)  that  a  single  RAS  vaccination  can  be  optimized  by  following  it  with  more  readily  producible  and  deliverable  subunit  booster  immunizations.
■590    ▼aSchool  code:  0096.
■650  4▼aImmunology.
■650  4▼aMicrobiology.
■650  4▼aCellular  biology.
■653    ▼aCirculating  memory
■653    ▼aListeria  monocytogenes
■653    ▼aLiver-stage  malaria
■653    ▼aSporozoite
■653    ▼aT  cell  recruitment
■653    ▼aVaccine
■653    ▼aCD8  T  cells
■653    ▼aViral  pathogens
■690    ▼a0982
■690    ▼a0379
■690    ▼a0410
■71020▼aThe  University  of  Iowa▼bImmunology.
■7730  ▼tDissertations  Abstracts  International▼g85-01B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0096
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16931564▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    New Books MORE
    Related books MORE
    최근 3년간 통계입니다.

    Info Détail de la recherche.

    • Réservation
    • 캠퍼스간 도서대출
    • 서가에 없는 책 신고
    • My Folder
    Matériel
    Reg No. Call No. emplacement Status Lend Info
    TQ0029747 T   원문자료 열람가능/출력가능 열람가능/출력가능
    마이폴더 부재도서신고

    * Les réservations sont disponibles dans le livre d'emprunt. Pour faire des réservations, S'il vous plaît cliquer sur le bouton de réservation

    해당 도서를 다른 이용자가 함께 대출한 도서

    Related books

    Related Popular Books

    도서위치