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Neural Stem Cell Expressed Vascular Endothelial Growth Factor Maintains the Neurogenic Niche of the Adult Mouse Hippocampus
Neural Stem Cell Expressed Vascular Endothelial Growth Factor Maintains the Neurogenic Niche of the Adult Mouse Hippocampus
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103656
- ISBN
- 9798314890813
- DDC
- 616
- 저자명
- Dause, Tyler.
- 서명/저자
- Neural Stem Cell Expressed Vascular Endothelial Growth Factor Maintains the Neurogenic Niche of the Adult Mouse Hippocampus
- 발행사항
- [Sl] : The Ohio State University, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 184 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: Kirby, Elizabeth.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2023.
- 초록/해제
- 요약In the dentate gyrus (DG) of the hippocampus, neural stem cells (NSCs) give rise to adult-born neurons that integrate into the local circuitry and support hippocampal function, a process known as neurogenesis. In addition to their ability to produce new cells, NSCs express and secrete a variety of factors, known collectively as the NSC secretome. While the ability of niche cells to regulate NSCs and neurogenesis has been a primary focus of ongoing research, there have been considerably fewer studies examining how NSCs regulate their microenvironment with their secretome. We have previously identified adult DG NSCs as a significant source of vascular endothelial growth factor (VEGF), which is necessary to maintain NSC quiescence in adulthood. However, the molecular mechanisms underlying VEGF signaling in NSC quiescence, and NSC-VEGFs role in signaling to other niche cells has yet to be fully elucidated. Here we investigate the reliability of a widely used transgenic mouse model in studies of adult NSCs (Chapter 2) and found that use of stop-floxed reporters to investigate cell autonomous gene function in NSPCs may lead to false conclusions. We used these findings to inform model choices while investigating a cell autonomous signaling pathway of VEGF in adult DG NSCs and discovered that VEGF signals through VEGFR2 in a cell internal autocrine loop to maintain quiescence in DG NSCs (Chapter 3). Finally, we explored the ability of NSCs to maintain the neurovascular niche of the adult mouse DG though VEGF expression and found that loss of NSC-specific VEGF led to complete vascular niche disruption, not thought changes to the vasculature, but by inhibiting NSC migration (Chapter 4). Together, these studies reveal a previously unrecognized role of NSC-VEGF in maintaining the neurogenic niche of the adult mouse DG. Our findings encourage future investigation into NSC-expressed factors that mediate their niche, which is imperative before developing effective NSC-based therapies to combat brain injury and disease.
- 일반주제명
- Neurosciences
- 일반주제명
- Cellular biology
- 일반주제명
- Molecular biology
- 키워드
- Hippocampus
- 키워드
- Neurogenesis
- 키워드
- Intracrine
- 기타저자
- The Ohio State University Psychology
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■1001 ▼aDause, Tyler.
■24510▼aNeural Stem Cell Expressed Vascular Endothelial Growth Factor Maintains the Neurogenic Niche of the Adult Mouse Hippocampus
■260 ▼a[Sl]▼bThe Ohio State University▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a184 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: Kirby, Elizabeth.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2023.
■520 ▼aIn the dentate gyrus (DG) of the hippocampus, neural stem cells (NSCs) give rise to adult-born neurons that integrate into the local circuitry and support hippocampal function, a process known as neurogenesis. In addition to their ability to produce new cells, NSCs express and secrete a variety of factors, known collectively as the NSC secretome. While the ability of niche cells to regulate NSCs and neurogenesis has been a primary focus of ongoing research, there have been considerably fewer studies examining how NSCs regulate their microenvironment with their secretome. We have previously identified adult DG NSCs as a significant source of vascular endothelial growth factor (VEGF), which is necessary to maintain NSC quiescence in adulthood. However, the molecular mechanisms underlying VEGF signaling in NSC quiescence, and NSC-VEGFs role in signaling to other niche cells has yet to be fully elucidated. Here we investigate the reliability of a widely used transgenic mouse model in studies of adult NSCs (Chapter 2) and found that use of stop-floxed reporters to investigate cell autonomous gene function in NSPCs may lead to false conclusions. We used these findings to inform model choices while investigating a cell autonomous signaling pathway of VEGF in adult DG NSCs and discovered that VEGF signals through VEGFR2 in a cell internal autocrine loop to maintain quiescence in DG NSCs (Chapter 3). Finally, we explored the ability of NSCs to maintain the neurovascular niche of the adult mouse DG though VEGF expression and found that loss of NSC-specific VEGF led to complete vascular niche disruption, not thought changes to the vasculature, but by inhibiting NSC migration (Chapter 4). Together, these studies reveal a previously unrecognized role of NSC-VEGF in maintaining the neurogenic niche of the adult mouse DG. Our findings encourage future investigation into NSC-expressed factors that mediate their niche, which is imperative before developing effective NSC-based therapies to combat brain injury and disease.
■590 ▼aSchool code: 0168.
■650 4▼aNeurosciences
■650 4▼aCellular biology
■650 4▼aMolecular biology
■653 ▼aNeural stem cells
■653 ▼aHippocampus
■653 ▼aVascular endothelial growth factor
■653 ▼aNeurogenesis
■653 ▼aIntracrine
■690 ▼a0317
■690 ▼a0379
■690 ▼a0307
■71020▼aThe Ohio State University▼bPsychology.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358188▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


