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A Novel Approach to Measure and Model the Interplay Between Multiple Layers of Cellular Heterogeneity in Glioblastoma
A Novel Approach to Measure and Model the Interplay Between Multiple Layers of Cellular Heterogeneity in Glioblastoma
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152001
- ISBN
- 9798384015246
- DDC
- 574
- 서명/저자
- A Novel Approach to Measure and Model the Interplay Between Multiple Layers of Cellular Heterogeneity in Glioblastoma
- 발행사항
- [Sl] : The Scripps Research Institute, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 115 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
- 주기사항
- Advisor: Janiszewska, Michalina.
- 학위논문주기
- Thesis (Ph.D.)--The Scripps Research Institute, 2024.
- 초록/해제
- 요약Intratumor heterogeneity has been associated with glioblastoma multiforme (GBM) for a long time1-3. The coexistence of heterogeneous cellular sub-populations with distinct genotypes, phenotypes, histological features, and epigenetic states, harbored in varying microenvironments and interconnected in highly resistant networks shapes the identity of this malignancy4-8. This translates into two main scientific challenges. Firstly, comprehensively profile this disease so to capture its complexity and understand its dynamics. Secondly, develop models that recapitulate glioblastoma heterogeneity and can be used to develop therapeutic approaches that simultaneously challenge the milieu of glioblastoma cellular diversity. To help address the first issue we developed a novel cell labelling methodology aimed at generating a high-resolution correlation map between prognostically relevant genetic alterations and associated transcriptional and epigenetic programs. This method termed Specific-top-Allele PCR FACS (STAR-FACS) allows to label individual cells based on a point mutation and selectively perform transcriptome and epigenome profiling of specific genetic clones within a polyclonal landscape. Furthermore, to address the macro spatial differences in glioblastoma composition we collaborated with a neurosurgeon and obtained tumor resections mapped to specific areas of the neoplasm through the Stryker MRI-guided navigation system. This allowed us to identify spatially distinct tumor clusters and tumor micro-environments (TME), hence increasing the resolution of tumor profiling obtained thought single sampling. To provide an interactive framework that would help address the second challenge posed by GBM heterogeneity, we developed cultures from spatially distinct regions of the same tumor and found spatially distinct morphological features, growth rate, metabolism and drug response. This indicates that at the time of the resection GBMs are likely to be already vastly spatially differentiated and the development of effective therapeutic approaches needs to account for this additional level of complexity. With this study we generated an actionable model comprised of 34 cell lines from distinct areas of 8 tumors that can be further exploited to investigate the different evolutionary trajectories imprinted in the different tumor regions.
- 일반주제명
- Molecular biology
- 일반주제명
- Oncology
- 일반주제명
- Cellular biology
- 키워드
- Cell labelling
- 키워드
- Tumor evolution
- 키워드
- Tumor modeling
- 기타저자
- The Scripps Research Institute Chemical Biology
- 기본자료저록
- Dissertations Abstracts International. 86-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152001
■006m o d
■007cr#unu||||||||
■020 ▼a9798384015246
■035 ▼a(MiAaPQ)AAI31329954
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aSalatino, Roberto M.
■24512▼aA Novel Approach to Measure and Model the Interplay Between Multiple Layers of Cellular Heterogeneity in Glioblastoma
■260 ▼a[Sl]▼bThe Scripps Research Institute▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a115 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-02, Section: B.
■500 ▼aAdvisor: Janiszewska, Michalina.
■5021 ▼aThesis (Ph.D.)--The Scripps Research Institute, 2024.
■520 ▼aIntratumor heterogeneity has been associated with glioblastoma multiforme (GBM) for a long time1-3. The coexistence of heterogeneous cellular sub-populations with distinct genotypes, phenotypes, histological features, and epigenetic states, harbored in varying microenvironments and interconnected in highly resistant networks shapes the identity of this malignancy4-8. This translates into two main scientific challenges. Firstly, comprehensively profile this disease so to capture its complexity and understand its dynamics. Secondly, develop models that recapitulate glioblastoma heterogeneity and can be used to develop therapeutic approaches that simultaneously challenge the milieu of glioblastoma cellular diversity. To help address the first issue we developed a novel cell labelling methodology aimed at generating a high-resolution correlation map between prognostically relevant genetic alterations and associated transcriptional and epigenetic programs. This method termed Specific-top-Allele PCR FACS (STAR-FACS) allows to label individual cells based on a point mutation and selectively perform transcriptome and epigenome profiling of specific genetic clones within a polyclonal landscape. Furthermore, to address the macro spatial differences in glioblastoma composition we collaborated with a neurosurgeon and obtained tumor resections mapped to specific areas of the neoplasm through the Stryker MRI-guided navigation system. This allowed us to identify spatially distinct tumor clusters and tumor micro-environments (TME), hence increasing the resolution of tumor profiling obtained thought single sampling. To provide an interactive framework that would help address the second challenge posed by GBM heterogeneity, we developed cultures from spatially distinct regions of the same tumor and found spatially distinct morphological features, growth rate, metabolism and drug response. This indicates that at the time of the resection GBMs are likely to be already vastly spatially differentiated and the development of effective therapeutic approaches needs to account for this additional level of complexity. With this study we generated an actionable model comprised of 34 cell lines from distinct areas of 8 tumors that can be further exploited to investigate the different evolutionary trajectories imprinted in the different tumor regions.
■590 ▼aSchool code: 1179.
■650 4▼aMolecular biology
■650 4▼aOncology
■650 4▼aCellular biology
■653 ▼aCell labelling
■653 ▼aGlioblastoma heterogeneity
■653 ▼aSingle point mutations
■653 ▼aTumor evolution
■653 ▼aTumor modeling
■690 ▼a0307
■690 ▼a0992
■690 ▼a0379
■71020▼aThe Scripps Research Institute▼bChemical Biology.
■7730 ▼tDissertations Abstracts International▼g86-02B.
■790 ▼a1179
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162340▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


