본문

TOX2 and Tox at the Intersection of Central Memory and Exhaustion in Human Car T Cells- [electronic resource]
TOX2 and Tox at the Intersection of Central Memory and Exhaustion in Human Car T Cells - [...
내용보기
TOX2 and Tox at the Intersection of Central Memory and Exhaustion in Human Car T Cells- [electronic resource]
자료유형  
 학위논문파일 국외
최종처리일시  
20240214101816
ISBN  
9798380388689
DDC  
574
저자명  
Collins, Sierra.
서명/저자  
TOX2 and Tox at the Intersection of Central Memory and Exhaustion in Human Car T Cells - [electronic resource]
발행사항  
[S.l.]: : University of Pennsylvania., 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
1 online resource(148 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
주기사항  
Advisor: Berger, Shelley L.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약CAR T therapy has provided a breakthrough in the treatment of hematologic malignancies, showing remarkable efficacy in cancers such as leukemia and lymphoma. However, the success of CAR T therapy in treating solid tumors has been limited due to T cell exhaustion, which limits their proliferation and cytotoxicity when chronically stimulated with antigen, such as in cancer. Genetic modification of CAR T cells is one approach to improve tumor killing capacity. We profiled a patient with chronic lymphocytic leukemia (CLL) who responded exceedingly well to CAR T therapy, finding increased transcription and chromatin opening at the transcription factor TOX2. We show, in an in vitro CAR T model, that TOX2 is required for the development of central memory T cells (TCMs), the preponderance of which underlay the positive therapeutic response. Our results show that TOX2 can induce a TCM phenotype and gene expression program by binding to the promoters of many TCM genes. In contrast, some studies in mice position TOX2 as a positive regulator of T cell exhaustion, like the closely related transcription factor TOX. We characterize TOX as a master regulator of T cell exhaustion in mice. We show that TOX works with a chromatin regulator to bind chromatin and positively regulate transcription of other exhaustion-related genes in mice, such as TOX2. Despite this similarity in mouse models of exhaustion, while TOX2 promotes TCM in our model of human CAR T therapy, we find that TOX is not required for TCMs, since TCMs increase when TOX expression is lost. However, when TOX2 is overexpressed at very high levels, it begins to induce exhaustion gene signatures and bind to exhaustion-related loci. We propose a model for TOX2 as a regulator of both central memory and exhaustion-two T cell subsets that are surprisingly similar-and we posit that the exact level of TOX2 expression could be responsible for the balance between them in certain contexts. Our results present a new role for TOX2 as a regulator of central memory, which distinguishes it from TOX, and introduce the potential for TOX2 overexpression to improve the potency of CAR T therapy.
일반주제명  
Biology.
일반주제명  
Immunology.
일반주제명  
Genetics.
키워드  
CAR T therapy
키워드  
Immunotherapy
키워드  
T cell exhaustion
키워드  
TOX2 expression
키워드  
Gene expression
기타저자  
University of Pennsylvania Cell and Molecular Biology
기본자료저록  
Dissertations Abstracts International. 85-03B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.
신착도서 더보기
최근 3년간 통계입니다.

소장정보

  • 예약
  • 소재불명신고
  • 나의폴더
  • 우선정리요청
  • 비도서대출신청
  • 야간 도서대출신청
소장자료
등록번호 청구기호 소장처 대출가능여부 대출정보
TF09297 전자도서
마이폴더 부재도서신고 비도서대출신청

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

해당 도서를 다른 이용자가 함께 대출한 도서

관련 인기도서

로그인 후 이용 가능합니다.