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Metabolic Networks in Pancreatic Cancer- [electronic resource]
Metabolic Networks in Pancreatic Cancer- [electronic resource]
상세정보
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101944
- ISBN
- 9798380371018
- DDC
- 574
- 저자명
- Kerk, Samuel A.
- 서명/저자
- Metabolic Networks in Pancreatic Cancer - [electronic resource]
- 발행사항
- [S.l.]: : University of Michigan., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(282 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 주기사항
- Advisor: Parent, Carole A.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 사용제한주기
- This item must not be added to any third party search indexes.
- 초록/해제
- 요약Cancer metabolism involves the mechanisms by which transformed cells utilize nutrients to sustain oncogenic programs. Cell-intrinsic rewiring of metabolism inherent to the tissue of origin is directed by activation of oncogenic drivers and loss of tumor suppressors. Cell-extrinsic metabolic crosstalk is determined by tissue architecture and resident cellular populations as well as nutrient availability. Together, this dysregulated metabolism promotes the overall growth and survival of cancer cells. Furthermore, distinct metabolic requirements of cancer cells present potential therapeutic opportunities.My thesis work has focused on cancer metabolism in the context of pancreatic cancer, a deadly disease for which effective alternative treatment strategies are desperately needed. As background, Chapter 1 presents a comprehensive and nuanced review on the current knowledge of pancreatic cancer metabolism, compared and contrasted with lung and colon cancer. This introductory chapter covers 1) how activation of oncogenic driver genes and/or loss of tumor-suppressor genes influence metabolic pathways in pancreatic cancer, 2) distinct metabolic programs inherent to the cells/tissue of origin, 3) unique metabolic crosstalk determined by tissue architecture, and 4) potential therapeutic inroads targeting tumor metabolism.Chapter 2 describes the identification of a novel nutrient scavenging pathway in pancreatic cancer cells. Critical glycosylation products needed for post-translation protein modifications are synthesized de novo using the hexosamine biosynthesis pathway (HBP). However, pancreatic cancer cells are able to compensate for inhibition of this pathway by scavenging downstream products from the extracellular environment. Dual inhibition of both the HBP and scavenging mechanisms blocked this metabolic rewiring. The remaining chapters of this dissertation center on mitochondrial glutamate-oxaloacetate transaminase 2 (GOT2), beginning with a review of the current literature related to GOT2 in cancer (Chapter 3). Chapter 4 demonstrates while GOT2 is required for in vitro pancreatic cancer cell proliferation, loss of GOT2 has no effect on the growth of pancreatic tumor growth and progression in vivo. GOT2 loss leads to intracellular reductive stress which can be ameliorated through uptake of environmental pyruvate in tumors. The generation of novel, physiologically relevant genetically engineered mouse models of GOT2 loss in murine pancreatic tumorigenesis and tumor growth is presented in Chapter 5, further supporting the finding that GOT2 is dispensable for in vivo pancreatic tumor growth.Chapter 6 delves into the metabolic reprogramming of pro-tumorigenic immune cells in the pancreatic tumor microenvironment using genetic models of Got1 or Got2 deletion in myeloid cells. Specifically, tumor-associated macrophages have been implicated in chemoresistance, immunosuppression, and pro-growth signaling in pancreatic cancer. Since Got1/Got2-related metabolism underlies several of these mechanisms, this chapter contains preliminary data using both ex vivo and in vivo models to determine if targeting Got1/Got2 metabolism in myeloid cells is a viable strategy to reprogram macrophages from pro- to anti-tumorigenic states in pancreatic tumors.The metabolic pathways necessary during development are often inappropriately re-activated in cancer. Therefore, understanding metabolic developmental defects can shed light on cancer metabolism. Indeed, global, constitutive deletion of Got2 is embryonic lethal in mice and inducible deletion in adult mice results in body weight loss and a failure to thrive. Chapter 7 characterizes the phenotypes involving Got2 loss in both embryonic and adult mice and proposes future interventions to resolve this metabolic defect, drawing from knowledge gleaned studying the role of GOT2 in pancreatic cancer. Finally, Chapter 8 concludes this dissertation by discussing future directions and highlighting key concepts in cancer metabolism.
- 일반주제명
- Biochemistry.
- 일반주제명
- Cellular biology.
- 일반주제명
- Genetics.
- 키워드
- Cancer biology
- 키워드
- Myeloid cells
- 키워드
- Tumor growth
- 기타저자
- University of Michigan Cancer 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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■00520240214101944
■006m o d
■007cr#unu||||||||
■020 ▼a9798380371018
■035 ▼a(MiAaPQ)AAI30747493
■035 ▼a(MiAaPQ)umichrackham005205
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aKerk, Samuel A.
■24510▼aMetabolic Networks in Pancreatic Cancer▼h[electronic resource]
■260 ▼a[S.l.]:▼bUniversity of Michigan. ▼c2023
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2023
■300 ▼a1 online resource(282 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-03, Section: B.
■500 ▼aAdvisor: Parent, Carole A.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■506 ▼aThis item must not be added to any third party search indexes.
■520 ▼aCancer metabolism involves the mechanisms by which transformed cells utilize nutrients to sustain oncogenic programs. Cell-intrinsic rewiring of metabolism inherent to the tissue of origin is directed by activation of oncogenic drivers and loss of tumor suppressors. Cell-extrinsic metabolic crosstalk is determined by tissue architecture and resident cellular populations as well as nutrient availability. Together, this dysregulated metabolism promotes the overall growth and survival of cancer cells. Furthermore, distinct metabolic requirements of cancer cells present potential therapeutic opportunities.My thesis work has focused on cancer metabolism in the context of pancreatic cancer, a deadly disease for which effective alternative treatment strategies are desperately needed. As background, Chapter 1 presents a comprehensive and nuanced review on the current knowledge of pancreatic cancer metabolism, compared and contrasted with lung and colon cancer. This introductory chapter covers 1) how activation of oncogenic driver genes and/or loss of tumor-suppressor genes influence metabolic pathways in pancreatic cancer, 2) distinct metabolic programs inherent to the cells/tissue of origin, 3) unique metabolic crosstalk determined by tissue architecture, and 4) potential therapeutic inroads targeting tumor metabolism.Chapter 2 describes the identification of a novel nutrient scavenging pathway in pancreatic cancer cells. Critical glycosylation products needed for post-translation protein modifications are synthesized de novo using the hexosamine biosynthesis pathway (HBP). However, pancreatic cancer cells are able to compensate for inhibition of this pathway by scavenging downstream products from the extracellular environment. Dual inhibition of both the HBP and scavenging mechanisms blocked this metabolic rewiring. The remaining chapters of this dissertation center on mitochondrial glutamate-oxaloacetate transaminase 2 (GOT2), beginning with a review of the current literature related to GOT2 in cancer (Chapter 3). Chapter 4 demonstrates while GOT2 is required for in vitro pancreatic cancer cell proliferation, loss of GOT2 has no effect on the growth of pancreatic tumor growth and progression in vivo. GOT2 loss leads to intracellular reductive stress which can be ameliorated through uptake of environmental pyruvate in tumors. The generation of novel, physiologically relevant genetically engineered mouse models of GOT2 loss in murine pancreatic tumorigenesis and tumor growth is presented in Chapter 5, further supporting the finding that GOT2 is dispensable for in vivo pancreatic tumor growth.Chapter 6 delves into the metabolic reprogramming of pro-tumorigenic immune cells in the pancreatic tumor microenvironment using genetic models of Got1 or Got2 deletion in myeloid cells. Specifically, tumor-associated macrophages have been implicated in chemoresistance, immunosuppression, and pro-growth signaling in pancreatic cancer. Since Got1/Got2-related metabolism underlies several of these mechanisms, this chapter contains preliminary data using both ex vivo and in vivo models to determine if targeting Got1/Got2 metabolism in myeloid cells is a viable strategy to reprogram macrophages from pro- to anti-tumorigenic states in pancreatic tumors.The metabolic pathways necessary during development are often inappropriately re-activated in cancer. Therefore, understanding metabolic developmental defects can shed light on cancer metabolism. Indeed, global, constitutive deletion of Got2 is embryonic lethal in mice and inducible deletion in adult mice results in body weight loss and a failure to thrive. Chapter 7 characterizes the phenotypes involving Got2 loss in both embryonic and adult mice and proposes future interventions to resolve this metabolic defect, drawing from knowledge gleaned studying the role of GOT2 in pancreatic cancer. Finally, Chapter 8 concludes this dissertation by discussing future directions and highlighting key concepts in cancer metabolism.
■590 ▼aSchool code: 0127.
■650 4▼aBiochemistry.
■650 4▼aCellular biology.
■650 4▼aGenetics.
■653 ▼aPancreatic ductal adenocarcinoma
■653 ▼aCancer metabolism
■653 ▼aCancer biology
■653 ▼aMyeloid cells
■653 ▼aTumor growth
■690 ▼a0487
■690 ▼a0379
■690 ▼a0369
■71020▼aUniversity of Michigan▼bCancer Biology.
■7730 ▼tDissertations Abstracts International▼g85-03B.
■773 ▼tDissertation Abstract International
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935535▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
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