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Palmoptosis: A Novel Form of Non-Apoptotic Cell Death
Palmoptosis: A Novel Form of Non-Apoptotic Cell Death
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105623
- ISBN
- 9798265427816
- DDC
- 616
- 저자명
- Leak, Logan.
- 서명/저자
- Palmoptosis: A Novel Form of Non-Apoptotic Cell Death
- 발행사항
- [Sl] : Stanford University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 111 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Dixon, Scott.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2024.
- 초록/해제
- 요약The most well-studied form of cell death is apoptosis, a form of cell suicide in which executioner proteolytic enzymes called caspases degrade intracellular proteins as part of a cell death cascade. Since the discovery of apoptosis in 1972, there have been a variety of other distinct non-apoptotic cell death pathways that have been discovered, differing in form and physiological and pathological relevance. Here, I describe one such novel non-apoptotic cell death pathway that we term "palmoptosis" due to the importance of the 16-carbon saturated fatty acid palmitate in its execution. This form of cell death is executed by the synthetic small molecule caspase-independent lethal 56 (CIL56) which was discovered in a chemical biology screen for inducers of caspase-independent cell death. From a CIL56 chemical genetic CRISPR screen, we identified novel supressors of this form of cell death. This screen, along with two published CIL56 chemical genetic screens in different systems, identified that knockout of trans-2,3-enoyl CoA reductase, or TECR, consistently resulted in significantly less cell death in the presence of CIL56. We generated multiple TECR gene-disrupted cell lines to understand how this enzyme may promote cell death. In brief, palmitate, and the related monounsaturated fatty acid trans-2-hexadecenoic acid, promote cell death in a TECR-dependent manner. This form of cell death is also triggered by a clinical candidate drug Tegavivint, a small molecule derived from the CIL56 backbone. In a human sarcoma xenograft model, Tegavivint reduces tumor growth in a TECR-dependent manner, suggesting that palmoptosis can be triggered in vivo to prevent tumor growth. A better understanding of the palmoptosis mechanism and additional validation in preclinical models may guide treatment decisions and interventions for the ongoing clinical trials investigating the anti-tumor effects of tegavivint.
- 일반주제명
- Cancer
- 일반주제명
- Physiology
- 일반주제명
- Protein synthesis
- 일반주제명
- Cell death
- 일반주제명
- Neutrophils
- 일반주제명
- Disease
- 일반주제명
- Vitamin C
- 일반주제명
- Ferroptosis
- 일반주제명
- Clinical trials
- 일반주제명
- Breakdowns
- 일반주제명
- Metabolism
- 일반주제명
- Lipids
- 일반주제명
- Apoptosis
- 일반주제명
- Cell cycle
- 일반주제명
- Cellular biology
- 일반주제명
- Pharmaceutical sciences
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798265427816
■035 ▼a(MiAaPQ)AAI32316528
■035 ▼a(MiAaPQ)Stanfordxw101sg0112
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aLeak, Logan.
■24510▼aPalmoptosis: A Novel Form of Non-Apoptotic Cell Death
■260 ▼a[Sl]▼bStanford University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a111 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Dixon, Scott.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2024.
■520 ▼aThe most well-studied form of cell death is apoptosis, a form of cell suicide in which executioner proteolytic enzymes called caspases degrade intracellular proteins as part of a cell death cascade. Since the discovery of apoptosis in 1972, there have been a variety of other distinct non-apoptotic cell death pathways that have been discovered, differing in form and physiological and pathological relevance. Here, I describe one such novel non-apoptotic cell death pathway that we term "palmoptosis" due to the importance of the 16-carbon saturated fatty acid palmitate in its execution. This form of cell death is executed by the synthetic small molecule caspase-independent lethal 56 (CIL56) which was discovered in a chemical biology screen for inducers of caspase-independent cell death. From a CIL56 chemical genetic CRISPR screen, we identified novel supressors of this form of cell death. This screen, along with two published CIL56 chemical genetic screens in different systems, identified that knockout of trans-2,3-enoyl CoA reductase, or TECR, consistently resulted in significantly less cell death in the presence of CIL56. We generated multiple TECR gene-disrupted cell lines to understand how this enzyme may promote cell death. In brief, palmitate, and the related monounsaturated fatty acid trans-2-hexadecenoic acid, promote cell death in a TECR-dependent manner. This form of cell death is also triggered by a clinical candidate drug Tegavivint, a small molecule derived from the CIL56 backbone. In a human sarcoma xenograft model, Tegavivint reduces tumor growth in a TECR-dependent manner, suggesting that palmoptosis can be triggered in vivo to prevent tumor growth. A better understanding of the palmoptosis mechanism and additional validation in preclinical models may guide treatment decisions and interventions for the ongoing clinical trials investigating the anti-tumor effects of tegavivint.
■590 ▼aSchool code: 0212.
■650 4▼aCancer
■650 4▼aPhysiology
■650 4▼aProtein synthesis
■650 4▼aCell death
■650 4▼aNeutrophils
■650 4▼aDisease
■650 4▼aVitamin C
■650 4▼aFerroptosis
■650 4▼aClinical trials
■650 4▼aBreakdowns
■650 4▼aMetabolism
■650 4▼aLipids
■650 4▼aApoptosis
■650 4▼aCell cycle
■650 4▼aCellular biology
■650 4▼aPharmaceutical sciences
■690 ▼a0719
■690 ▼a0379
■690 ▼a0572
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360816▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


