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Exploring Therapeutic Vulnerabilities of Bladder Cancer
Exploring Therapeutic Vulnerabilities of Bladder Cancer
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103530
- ISBN
- 9798291561515
- DDC
- 615
- 서명/저자
- Exploring Therapeutic Vulnerabilities of Bladder Cancer
- 발행사항
- [Sl] : The University of North Carolina at Chapel Hill, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 138 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Kim, William.
- 학위논문주기
- Thesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
- 초록/해제
- 요약APOBEC3A and APOBEC3B are highly expressed in bladder cancer. Concomitantly, up to 70% of mutations found in bladder cancer, which is among the cancer type with the highest frequency of mutations, can be attributed to APOBEC3 mutagenesis. We introduced a novel, Cre-inducible, mouse model (UPPA) that allows urothelial specific overexpression of mouse Apobec3 (mApobec3) and concomitant inactivation of tumor suppressors PTEN and p53. We found mApobec3 shortened tumor latency in UPPA mice compared to our control model UPP. Additionally, UPPA mice had high incidence of lung metastases and the tumors exhibited extensive squamous feature. We confirmed the role of mApobec3 in promoting squamous differentiation and metastasis using in vitro doxycycline-inducible cell line model and uncovered IL1α/AP-1 pathway as the mediator of these mApobec3-induced phenotypes. Strikingly, we found that among the human APOBEC3 enzymes, only APOBEC3A is associated with squamous differentiation even though both APOBEC3A and APOBEC3B contribute to the mutational landscape in bladder cancer.Bladder cancer harbor a high frequency of mutations that are primarily caused by APOBEC3 mutagenesis. A portion of these mutations are expressed, processed, and presented as peptide neoantigens on the surface of tumor cells. These neoantigens can be targeted by T cells and thereby result in elimination of cancer cells. In Chapter 3, we examined the efficacy of entinostat, an HDAC1/3 inhibitor, for bladder cancer. We uncovered that, in addition to previously reported mechanisms, entinostat induces anti-tumor immune responses through modulating the expression of silent tumor neoantigens.While both APOBEC3A and APOBEC3B mutagenic activity contributes to the tumor mutational burden in bladder cancer, which is an important predictor of immunotherapy response, squamous differentiation has been suggested as a mechanism of therapy resistance. Therefore, additional research on APOBEC3A and specific inhibitor for this enzyme are warranted and potentially beneficial for bladder cancer treatment.
- 일반주제명
- Pharmacology
- 일반주제명
- Oncology
- 일반주제명
- Immunology
- 키워드
- Bladder cancer
- 키워드
- Immunotherapy
- 기타저자
- The University of North Carolina at Chapel Hill Pharmacology
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798291561515
■035 ▼a(MiAaPQ)AAI32039847
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a615
■1001 ▼aTruong, Andrew S.
■24510▼aExploring Therapeutic Vulnerabilities of Bladder Cancer
■260 ▼a[Sl]▼bThe University of North Carolina at Chapel Hill▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a138 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Kim, William.
■5021 ▼aThesis (Ph.D.)--The University of North Carolina at Chapel Hill, 2025.
■520 ▼aAPOBEC3A and APOBEC3B are highly expressed in bladder cancer. Concomitantly, up to 70% of mutations found in bladder cancer, which is among the cancer type with the highest frequency of mutations, can be attributed to APOBEC3 mutagenesis. We introduced a novel, Cre-inducible, mouse model (UPPA) that allows urothelial specific overexpression of mouse Apobec3 (mApobec3) and concomitant inactivation of tumor suppressors PTEN and p53. We found mApobec3 shortened tumor latency in UPPA mice compared to our control model UPP. Additionally, UPPA mice had high incidence of lung metastases and the tumors exhibited extensive squamous feature. We confirmed the role of mApobec3 in promoting squamous differentiation and metastasis using in vitro doxycycline-inducible cell line model and uncovered IL1α/AP-1 pathway as the mediator of these mApobec3-induced phenotypes. Strikingly, we found that among the human APOBEC3 enzymes, only APOBEC3A is associated with squamous differentiation even though both APOBEC3A and APOBEC3B contribute to the mutational landscape in bladder cancer.Bladder cancer harbor a high frequency of mutations that are primarily caused by APOBEC3 mutagenesis. A portion of these mutations are expressed, processed, and presented as peptide neoantigens on the surface of tumor cells. These neoantigens can be targeted by T cells and thereby result in elimination of cancer cells. In Chapter 3, we examined the efficacy of entinostat, an HDAC1/3 inhibitor, for bladder cancer. We uncovered that, in addition to previously reported mechanisms, entinostat induces anti-tumor immune responses through modulating the expression of silent tumor neoantigens.While both APOBEC3A and APOBEC3B mutagenic activity contributes to the tumor mutational burden in bladder cancer, which is an important predictor of immunotherapy response, squamous differentiation has been suggested as a mechanism of therapy resistance. Therefore, additional research on APOBEC3A and specific inhibitor for this enzyme are warranted and potentially beneficial for bladder cancer treatment.
■590 ▼aSchool code: 0153.
■650 4▼aPharmacology
■650 4▼aOncology
■650 4▼aImmunology
■653 ▼aBladder cancer
■653 ▼aImmunotherapy
■653 ▼aSquamous differentiation
■690 ▼a0419
■690 ▼a0992
■690 ▼a0982
■71020▼aThe University of North Carolina at Chapel Hill▼bPharmacology.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0153
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357568▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


