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Metabolic Flexibility in Cancer: Acetylcarnitine Links Compartmentalized Acetyl-Coa Pools- [electronic resource]
Metabolic Flexibility in Cancer: Acetylcarnitine Links Compartmentalized Acetyl-Coa Pools ...
Metabolic Flexibility in Cancer: Acetylcarnitine Links Compartmentalized Acetyl-Coa Pools- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214101230
ISBN  
9798380388290
DDC  
574
저자명  
Izzo, Luke T.
서명/저자  
Metabolic Flexibility in Cancer: Acetylcarnitine Links Compartmentalized Acetyl-Coa Pools - [electronic resource]
발행사항  
[S.l.]: : University of Pennsylvania., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(158 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
주기사항  
Advisor: Wellen, Kathryn E.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약Cellular metabolism is intricately regulated by substrate availability, enzymatic activity, and compartmentalization within subcellular localization. It is also highly flexible, with cells demonstrating the ability to shift between metabolic pathways to maintain their function. Aberrant metabolic processes are linked to numerous diseases including obesity, diabetes, and cancer and these diseases often shows shifts from traditional homeostatic metabolism to alternative metabolic processes. Understanding the regulation of and flexibility in critical metabolic pathways is required for efficacious targeting of such pathways in disease states. The metabolite acetyl-CoA is involved in multiple metabolic pathways that are altered in disease. Acetyl-CoA metabolism is regulated, in part, by the subcellular localization of the enzymes that perform is synthesis and utilization. Nuclear-cytosolic acetyl-CoA is used for lipid synthesis and acetylation, processes that are often dysregulated in cancer. For this reason, the enzymes that produce it are attractive therapeutic targets, but flexibility in acetyl-CoA metabolism poses a problem for inhibiting these enzymes. A complete understanding of nuclear-cytosolic acetyl-CoA metabolism in order to identify proper strategies for targeting this pathway. Therefore, we utilize an approach to genetically ablate the known nuclear-cytosolic acetyl-CoA producers, ATP-citrate lyase (ACLY) and acyl-CoA synthetase short chain family member 2 (ACSS2), to probe alternate compensatory pathways and asses combinatorial treatments in a hepatocellular carcinoma model. We identify the acetylcarnitine shuttle as a previously uncharacterized link between mitochondria and nuclear-cytosolic acetyl-CoA that can regulate de novo lipogenesis and gene expression through histone acetylation. Moreover, we identify two potential nutrient conditions that may synergize with targeting of nuclear-cytosolic acetyl-CoA metabolism using genetic loss of ACLY in vivo and in vitro. Together, these findings have expanded our understanding of cellular acetyl-CoA metabolism and shed light on the possibility of successfully targeting these pathways in HCC.
일반주제명  
Molecular biology.
일반주제명  
Cellular biology.
일반주제명  
Biochemistry.
일반주제명  
Genetics.
키워드  
Acetyl-CoA
키워드  
Sacetylcarnitine shuttle
키워드  
Cellular metabolism
키워드  
Gene expression
키워드  
Metabolic processes
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.

MARC

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■020    ▼a9798380388290
■035    ▼a(MiAaPQ)AAI30527447
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574
■1001  ▼aIzzo,  Luke  T.
■24510▼aMetabolic  Flexibility  in  Cancer:  Acetylcarnitine  Links  Compartmentalized  Acetyl-Coa  Pools▼h[electronic  resource]
■260    ▼a[S.l.]:▼bUniversity  of  Pennsylvania.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(158  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-03,  Section:  B.
■500    ▼aAdvisor:  Wellen,  Kathryn  E.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aCellular  metabolism  is  intricately  regulated  by  substrate  availability,  enzymatic  activity,  and  compartmentalization  within  subcellular  localization.  It  is  also  highly  flexible,  with  cells  demonstrating  the  ability  to  shift  between  metabolic  pathways  to  maintain  their  function.  Aberrant  metabolic  processes  are  linked  to  numerous  diseases  including  obesity,  diabetes,  and  cancer  and  these  diseases  often  shows  shifts  from  traditional  homeostatic  metabolism  to  alternative  metabolic  processes.  Understanding  the  regulation  of  and  flexibility  in  critical  metabolic  pathways  is  required  for  efficacious  targeting  of  such  pathways  in  disease  states.  The  metabolite  acetyl-CoA  is  involved  in  multiple  metabolic  pathways  that  are  altered  in  disease.  Acetyl-CoA  metabolism  is  regulated,  in  part,  by  the  subcellular  localization  of  the  enzymes  that  perform  is  synthesis  and  utilization.  Nuclear-cytosolic  acetyl-CoA  is  used  for  lipid  synthesis  and  acetylation,  processes  that  are  often  dysregulated  in  cancer.  For  this  reason,  the  enzymes  that  produce  it  are  attractive  therapeutic  targets,  but  flexibility  in  acetyl-CoA  metabolism  poses  a  problem  for  inhibiting  these  enzymes.  A  complete  understanding  of  nuclear-cytosolic  acetyl-CoA  metabolism  in  order  to  identify  proper  strategies  for  targeting  this  pathway.  Therefore,  we  utilize  an  approach  to  genetically  ablate  the  known  nuclear-cytosolic  acetyl-CoA  producers,  ATP-citrate  lyase  (ACLY)  and  acyl-CoA  synthetase  short  chain  family  member  2  (ACSS2),  to  probe  alternate  compensatory  pathways  and  asses  combinatorial  treatments  in  a  hepatocellular  carcinoma  model.  We  identify  the  acetylcarnitine  shuttle  as  a  previously  uncharacterized  link  between  mitochondria  and  nuclear-cytosolic  acetyl-CoA  that  can  regulate  de  novo  lipogenesis  and  gene  expression  through  histone  acetylation.  Moreover,  we  identify  two  potential  nutrient  conditions  that  may  synergize  with  targeting  of  nuclear-cytosolic  acetyl-CoA  metabolism  using  genetic  loss  of  ACLY  in  vivo  and  in  vitro.  Together,  these  findings  have  expanded  our  understanding  of  cellular  acetyl-CoA  metabolism  and  shed  light  on  the  possibility  of  successfully  targeting  these  pathways  in  HCC.
■590    ▼aSchool  code:  0175.
■650  4▼aMolecular  biology.
■650  4▼aCellular  biology.
■650  4▼aBiochemistry.
■650  4▼aGenetics.
■653    ▼aAcetyl-CoA
■653    ▼aSacetylcarnitine  shuttle
■653    ▼aCellular  metabolism
■653    ▼aGene  expression
■653    ▼aMetabolic  processes
■690    ▼a0307
■690    ▼a0379
■690    ▼a0487
■690    ▼a0369
■71020▼aUniversity  of  Pennsylvania▼bCell  and  Molecular  Biology.
■7730  ▼tDissertations  Abstracts  International▼g85-03B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933309▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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