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The Role of Monounsaturated Fatty Acids in Ferroptosis
The Role of Monounsaturated Fatty Acids in Ferroptosis
The Role of Monounsaturated Fatty Acids in Ferroptosis

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104746
ISBN  
9798290651033
DDC  
572.6
저자명  
Pope, Lauren Elizabeth.
서명/저자  
The Role of Monounsaturated Fatty Acids in Ferroptosis
발행사항  
[Sl] : Stanford University, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
76 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
주기사항  
Advisor: Dixon, Scott.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2023.
초록/해제  
요약Ferroptosis is an iron-dependent, oxidative form of cell death that is a result of toxic accumulation of polyunsaturated fatty acid phospholipid hydroperoxides (PUFA-PL-OOH). This death can occur upon inhibition of the phospholipid glutathione peroxidase, GPX4. I find here that cancer cell lines are not uniformly reliant on GPX4 for cell survival. A compendium of factors drives GPX4 essentiality including PUFA content within cells but also reliance on de novo MUFA biogenesis. This work reveals novel MUFAs that can inhibit ferroptosis. Protective MUFAs lead to decreased abundance of toxic PUFA-PLs which reduces ferroptotic stress in cancer cells. I also find that ASCL3, which is required for oleic acid to protect from ferroptosis, is required for some but not all MUFAs to protect from ferroptosis. I identify a novel player in MUFA metabolism, MBOAT2, which prevents cells from using MUFAs to prevent ferroptosis. Finally, I discover that oleic acid can become less protective against ferroptosis when FSP1 is inhibited, depending on the cell line context. Overall, these findings suggest there is a complex machinery within cells that metabolizes MUFAs and complicates our view of how ferroptosis pathways interact.
일반주제명  
Dihydrofolate reductase
일반주제명  
Plasma
일반주제명  
Endoplasmic reticulum
일반주제명  
Cell death
일반주제명  
Cytochrome
일반주제명  
Disease
일반주제명  
Cancer therapies
일반주제명  
Mutation
일반주제명  
Mitochondria
일반주제명  
Biology
일반주제명  
Metabolism
일반주제명  
Lipids
일반주제명  
Dehydrogenases
일반주제명  
Membranes
일반주제명  
Oxidation
일반주제명  
Ferroptosis
일반주제명  
Ischemia
일반주제명  
Metabolites
일반주제명  
Vitamins
일반주제명  
Transcription factors
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aPope,  Lauren  Elizabeth.
■24510▼aThe  Role  of  Monounsaturated  Fatty  Acids  in  Ferroptosis
■260    ▼a[Sl]▼bStanford  University▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a76  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  B.
■500    ▼aAdvisor:  Dixon,  Scott.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2023.
■520    ▼aFerroptosis  is  an  iron-dependent,  oxidative  form  of  cell  death  that  is  a  result  of  toxic  accumulation  of  polyunsaturated  fatty  acid  phospholipid  hydroperoxides  (PUFA-PL-OOH).  This  death  can  occur  upon  inhibition  of  the  phospholipid  glutathione  peroxidase,  GPX4.  I  find  here  that  cancer  cell  lines  are  not  uniformly  reliant  on  GPX4  for  cell  survival.  A  compendium  of  factors  drives  GPX4  essentiality  including  PUFA  content  within  cells  but  also  reliance  on  de  novo  MUFA  biogenesis.  This  work  reveals  novel  MUFAs  that  can  inhibit  ferroptosis.  Protective  MUFAs  lead  to  decreased  abundance  of  toxic  PUFA-PLs  which  reduces  ferroptotic  stress  in  cancer  cells.  I  also  find  that  ASCL3,  which  is  required  for  oleic  acid  to  protect  from  ferroptosis,  is  required  for  some  but  not  all  MUFAs  to  protect  from  ferroptosis.  I  identify  a  novel  player  in  MUFA  metabolism,  MBOAT2,  which  prevents  cells  from  using  MUFAs  to  prevent  ferroptosis.  Finally,  I  discover  that  oleic  acid  can  become  less  protective  against  ferroptosis  when  FSP1  is  inhibited,  depending  on  the  cell  line  context.  Overall,  these  findings  suggest  there  is  a  complex  machinery  within  cells  that  metabolizes  MUFAs  and  complicates  our  view  of  how  ferroptosis  pathways  interact.
■590    ▼aSchool  code:  0212.
■650  4▼aDihydrofolate  reductase
■650  4▼aPlasma
■650  4▼aEndoplasmic  reticulum
■650  4▼aCell  death
■650  4▼aCytochrome
■650  4▼aDisease
■650  4▼aCancer  therapies
■650  4▼aMutation
■650  4▼aMitochondria
■650  4▼aBiology
■650  4▼aMetabolism
■650  4▼aLipids
■650  4▼aDehydrogenases
■650  4▼aMembranes
■650  4▼aOxidation
■650  4▼aFerroptosis
■650  4▼aIschemia
■650  4▼aMetabolites
■650  4▼aVitamins
■650  4▼aTranscription  factors
■690    ▼a0306
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g87-01B.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358750▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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