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Investigation of Spire and Cappuccino in Drosophila Oogenesis: Tool Development and Screening for Interactors
Investigation of Spire and Cappuccino in Drosophila Oogenesis: Tool Development and Screening for Interactors
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152012
- ISBN
- 9798382832340
- DDC
- 574
- 서명/저자
- Investigation of Spire and Cappuccino in Drosophila Oogenesis: Tool Development and Screening for Interactors
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 173 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Quinlan, Margot Elizabeth.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약The Drosophila oocyte has long served as a model for understanding oogenesis, the process of egg development. An essential structure in Drosophila oocytes is a cytoplasmic actin meshwork that persists during mid-oogenesis. This complex actin network is built by the collaboration of actin nucleators: Spire (Spir) and Cappuccino (Capu). Removal of the actin mesh, and the concurrent decrease in Spir and Capu expression, coincides with the onset of fast cytoplasmic streaming, mixing cytoplasmic contents and reinforcing the establishment of polarity. Analogous actin meshes, built by Spir and Capu, have been characterized in other systems. The function of these networks appears to differ based on the localization of Capu while the role of the Drosophila actin mesh, outside of restricting cytoplasmic streaming, remains uncertain. This is in part, due to the current limitations of imaging the egg chamber ex vivo during mesh removal and the requirement of mesh components during earlier stages of development. To better characterize what the actin mesh does in oogenesis, we set out to generate improved tools for studying Spir and Capu. We established a gene-specific driver for Capu, capu-Gal4, that improved the rescue of capu null to 90% fertility. Using this driver, we uncovered evidence of additional roles for Capu in development outside of the actin mesh. Our attempts to improve transgene rescue of Spir were unsuccessful. In addition, we performed genome editing to endogenously tag Spir and Capu in Drosophila. With these tools, we confirmed the expression patterns of Spir and Capu and revealed previously undescribed localization in somatic cells. In addition, we employed knock-down screens to identify other genes that regulate the actin mesh or interact with Spir. Lastly, we have made progress in adapting long term live imaging methods to visualize the removal of the actin mesh.In sum, this work contributes new insights into Drosophila oogenesis and establishes the groundwork for further developing tools for the Drosophila research community. More specifically, it demonstrates that subtle changes in the interaction of actin nucleators leads to the formation of actin-based structures that play distinct cellular roles and exemplifies the need for scrupulous genetic investigations.
- 일반주제명
- Molecular biology
- 일반주제명
- Entomology
- 일반주제명
- Biochemistry
- 일반주제명
- Genetics
- 키워드
- Cappuccino
- 키워드
- Egg development
- 키워드
- Actin nucleators
- 기타저자
- University of California, Los Angeles Chemistry 0153
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008250123s2024 us c eng d■001000017162436
■00520250211152012
■006m o d
■007cr#unu||||||||
■020 ▼a9798382832340
■035 ▼a(MiAaPQ)AAI31331298
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aBailey, Hannah Marie.
■24510▼aInvestigation of Spire and Cappuccino in Drosophila Oogenesis: Tool Development and Screening for Interactors
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a173 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Quinlan, Margot Elizabeth.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2024.
■520 ▼aThe Drosophila oocyte has long served as a model for understanding oogenesis, the process of egg development. An essential structure in Drosophila oocytes is a cytoplasmic actin meshwork that persists during mid-oogenesis. This complex actin network is built by the collaboration of actin nucleators: Spire (Spir) and Cappuccino (Capu). Removal of the actin mesh, and the concurrent decrease in Spir and Capu expression, coincides with the onset of fast cytoplasmic streaming, mixing cytoplasmic contents and reinforcing the establishment of polarity. Analogous actin meshes, built by Spir and Capu, have been characterized in other systems. The function of these networks appears to differ based on the localization of Capu while the role of the Drosophila actin mesh, outside of restricting cytoplasmic streaming, remains uncertain. This is in part, due to the current limitations of imaging the egg chamber ex vivo during mesh removal and the requirement of mesh components during earlier stages of development. To better characterize what the actin mesh does in oogenesis, we set out to generate improved tools for studying Spir and Capu. We established a gene-specific driver for Capu, capu-Gal4, that improved the rescue of capu null to 90% fertility. Using this driver, we uncovered evidence of additional roles for Capu in development outside of the actin mesh. Our attempts to improve transgene rescue of Spir were unsuccessful. In addition, we performed genome editing to endogenously tag Spir and Capu in Drosophila. With these tools, we confirmed the expression patterns of Spir and Capu and revealed previously undescribed localization in somatic cells. In addition, we employed knock-down screens to identify other genes that regulate the actin mesh or interact with Spir. Lastly, we have made progress in adapting long term live imaging methods to visualize the removal of the actin mesh.In sum, this work contributes new insights into Drosophila oogenesis and establishes the groundwork for further developing tools for the Drosophila research community. More specifically, it demonstrates that subtle changes in the interaction of actin nucleators leads to the formation of actin-based structures that play distinct cellular roles and exemplifies the need for scrupulous genetic investigations.
■590 ▼aSchool code: 0031.
■650 4▼aMolecular biology
■650 4▼aEntomology
■650 4▼aBiochemistry
■650 4▼aGenetics
■653 ▼aDrosophila oocytes
■653 ▼aCappuccino
■653 ▼aEgg development
■653 ▼aActin nucleators
■653 ▼aCytoplasmic contents
■690 ▼a0307
■690 ▼a0487
■690 ▼a0369
■690 ▼a0353
■71020▼aUniversity of California, Los Angeles▼bChemistry 0153.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162436▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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