Manipulating Cancer Cell States to Overcome Drug Resistance- [electronic resource]
Manipulating Cancer Cell States to Overcome Drug Resistance- [electronic resource]
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101509
- ISBN
- 9798380385220
- DDC
- 590
- 서명/저자
- Manipulating Cancer Cell States to Overcome Drug Resistance - [electronic resource]
- 발행사항
- [S.l.]: : University of Pennsylvania., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(104 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-03, Section: B.
- 주기사항
- Advisor: Shaffer, Sydney.
- 학위논문주기
- Thesis (Ph.D.)--University of Pennsylvania, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약Plasticity enables cells to change their gene expression state in the absence of a genetic change. At the single-cell level, gene expression states can persist for different lengths of time, which is a quantitative measurement referred to as gene expression memory. Because plasticity is not encoded by genetic changes, these states can be reversible, and therefore, are amenable to modulation by disrupting gene expression memory. However, we currently do not have robust methods to find the regulators of memory or to track state switching in plastic cell populations. Here, we developed a lineage tracing-based technique to quantify gene expression memory and to identify cells undergoing state switching. Applied to human melanoma cells, we quantified long-lived fluctuations in gene expression states that underlie resistance to targeted therapy. Further, we identified the PI3K and TGF-β pathways as modulators of these state switching dynamics. Leveraging the PI3K and TGF-β pathways as dials on switching between plastic states, we propose a "pretreatment" model in which we first use a PI3K inhibitor to modulate the gene expression states of the cell population and then apply targeted therapy. This plasticity-informed dosing scheme ultimately leads to less drug resistance than targeted therapy alone. Taken together, we describe a technique to find modulators of gene expression memory and then apply this knowledge to alter plastic cell states and their connected cell fates.
- 일반주제명
- Systematic biology.
- 일반주제명
- Cellular biology.
- 일반주제명
- Oncology.
- 키워드
- Drug resistance
- 키워드
- Melanoma cells
- 키워드
- Single cell
- 키워드
- Gene expression
- 키워드
- Cancer
- 기타저자
- University of Pennsylvania Cell and Molecular Biology
- 기본자료저록
- Dissertations Abstracts International. 85-03B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
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