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Defining the Role of C. elegans fmo-4 in Longevity and Stress Resistance
Defining the Role of C. elegans fmo-4 in Longevity and Stress Resistance
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105218
- ISBN
- 9798291565896
- DDC
- 574
- 서명/저자
- Defining the Role of C. elegans fmo-4 in Longevity and Stress Resistance
- 발행사항
- [Sl] : University of Michigan, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 198 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Leiser, Scott Frederick.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2025.
- 초록/해제
- 요약Aging is the leading risk factor for chronic diseases, with nearly 95% of adults over the age of 60 affected with at least one chronic condition. As the global population trends older, understanding the mechanisms underlying age-related decline has become increasingly important for public health. Chronic conditions such as heart disease, cancer, and diabetes not only impact individual quality of life, but also place a significant burden on healthcare resources. Therefore, elucidating the biological processes that drive aging is crucial for developing interventions that promote healthier aging and reduce the prevalence of age-related diseases.Because of its fundamental role in cellular function and energy production, metabolism has emerged as a major area of interest in aging research. Broadly, my work centers on understanding how metabolic pathways influence aging, with the ultimate goal of uncovering potential treatments to extend lifespan and enhance healthspan. This dual approach contributes significantly both to our fundamental understanding of the mechanisms of aging and to the development of practical therapeutic interventions.Specifically, my research investigates the role of fmo-4, a gene that promotes longevity, healthspan, and stress resistance in Caenorhabditis elegans. I discovered that fmo-4 functions downstream of multiple nutrient-sensing longevity pathways, including dietary restriction and the inhibition of mTOR signaling, implicating fmo-4 as a major regulator of aging. I also found that fmo-4 is sufficient to extend lifespan when overexpressed either ubiquitously or specifically in the hypodermis. Upon investigation of downstream mechanisms, I established that fmo-4 extends lifespan and promotes resistance to paraquat stress, which increases the formation of free radicals, by interacting with key genes in the endoplasmic reticulum and the mitochondria that regulate calcium signaling between these organelles. These findings highlight the importance of intracellular calcium homeostasis in the aging process as well as the importance of fmo-4 in calcium metabolism.Building on this foundational work, I next explored how fmo-4 influences mitochondrial physiology. Given that fmo-4 plays a critical role in regulating calcium signaling between the endoplasmic reticulum and mitochondria - a process essential for maintaining mitochondrial health - I hypothesized that fmo-4 expression would significantly affect key aspects of mitochondria metabolism. My findings indicate that fmo-4 modulates mitochondrial metabolism to promote longevity and stress resistance by influencing the tricarboxylic acid (TCA) cycle and its metabolites, including malate and fumarate, as well as regulating mitochondrial dynamics, such as fission and fusion. These results reveal an intricate relationship between cellular organelles and metabolic pathways in lifespan extension.In addition to studying fmo-4's impact on metabolism and longevity, my work also explores its translational potential for human health. I found that fmo-4 expression in C. elegans can serve as a valuable readout for identifying pro-longevity compounds, such as deguelin. Importantly, I confirmed that deguelin requires fmo-4 for its longevity- and healthspan-promoting effects. These data demonstrate the potential for using FMOs as biomarkers to screen for therapeutics that can promote longevity and healthspan in humans. By bridging the gap between basic research and applied science, my research aims to accelerate the development of interventions that mitigate age-related decline and improve quality of life for aging populations.Together, the findings presented in this thesis enhance our understanding of the metabolic mechanisms that regulate aging while supporting the long-term goal of developing therapeutics that promote human health and longevity.
- 일반주제명
- Cellular biology
- 일반주제명
- Molecular biology
- 일반주제명
- Aging
- 키워드
- Longevity
- 기타저자
- University of Michigan Cellular & Molecular Biology
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798291565896
■035 ▼a(MiAaPQ)AAI32271783
■035 ▼a(MiAaPQ)umichrackham006229
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aTuckowski, Angela M.
■24510▼aDefining the Role of C. elegans fmo-4 in Longevity and Stress Resistance
■260 ▼a[Sl]▼bUniversity of Michigan▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a198 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Leiser, Scott Frederick.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2025.
■520 ▼aAging is the leading risk factor for chronic diseases, with nearly 95% of adults over the age of 60 affected with at least one chronic condition. As the global population trends older, understanding the mechanisms underlying age-related decline has become increasingly important for public health. Chronic conditions such as heart disease, cancer, and diabetes not only impact individual quality of life, but also place a significant burden on healthcare resources. Therefore, elucidating the biological processes that drive aging is crucial for developing interventions that promote healthier aging and reduce the prevalence of age-related diseases.Because of its fundamental role in cellular function and energy production, metabolism has emerged as a major area of interest in aging research. Broadly, my work centers on understanding how metabolic pathways influence aging, with the ultimate goal of uncovering potential treatments to extend lifespan and enhance healthspan. This dual approach contributes significantly both to our fundamental understanding of the mechanisms of aging and to the development of practical therapeutic interventions.Specifically, my research investigates the role of fmo-4, a gene that promotes longevity, healthspan, and stress resistance in Caenorhabditis elegans. I discovered that fmo-4 functions downstream of multiple nutrient-sensing longevity pathways, including dietary restriction and the inhibition of mTOR signaling, implicating fmo-4 as a major regulator of aging. I also found that fmo-4 is sufficient to extend lifespan when overexpressed either ubiquitously or specifically in the hypodermis. Upon investigation of downstream mechanisms, I established that fmo-4 extends lifespan and promotes resistance to paraquat stress, which increases the formation of free radicals, by interacting with key genes in the endoplasmic reticulum and the mitochondria that regulate calcium signaling between these organelles. These findings highlight the importance of intracellular calcium homeostasis in the aging process as well as the importance of fmo-4 in calcium metabolism.Building on this foundational work, I next explored how fmo-4 influences mitochondrial physiology. Given that fmo-4 plays a critical role in regulating calcium signaling between the endoplasmic reticulum and mitochondria - a process essential for maintaining mitochondrial health - I hypothesized that fmo-4 expression would significantly affect key aspects of mitochondria metabolism. My findings indicate that fmo-4 modulates mitochondrial metabolism to promote longevity and stress resistance by influencing the tricarboxylic acid (TCA) cycle and its metabolites, including malate and fumarate, as well as regulating mitochondrial dynamics, such as fission and fusion. These results reveal an intricate relationship between cellular organelles and metabolic pathways in lifespan extension.In addition to studying fmo-4's impact on metabolism and longevity, my work also explores its translational potential for human health. I found that fmo-4 expression in C. elegans can serve as a valuable readout for identifying pro-longevity compounds, such as deguelin. Importantly, I confirmed that deguelin requires fmo-4 for its longevity- and healthspan-promoting effects. These data demonstrate the potential for using FMOs as biomarkers to screen for therapeutics that can promote longevity and healthspan in humans. By bridging the gap between basic research and applied science, my research aims to accelerate the development of interventions that mitigate age-related decline and improve quality of life for aging populations.Together, the findings presented in this thesis enhance our understanding of the metabolic mechanisms that regulate aging while supporting the long-term goal of developing therapeutics that promote human health and longevity.
■590 ▼aSchool code: 0127.
■650 4▼aCellular biology
■650 4▼aMolecular biology
■650 4▼aAging
■653 ▼aLongevity
■653 ▼aMetabolic mechanisms
■653 ▼aCaenorhabditis elegans
■653 ▼aTricarboxylic acid
■653 ▼aStress resistance
■690 ▼a0493
■690 ▼a0307
■690 ▼a0379
■71020▼aUniversity of Michigan▼bCellular & Molecular Biology.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359812▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


