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Microfluidic Devices for Multimodal Single-Cell Assays
Microfluidic Devices for Multimodal Single-Cell Assays
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103600
- ISBN
- 9798288865411
- DDC
- 610
- 서명/저자
- Microfluidic Devices for Multimodal Single-Cell Assays
- 발행사항
- [Sl] : University of California, Berkeley, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 146 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Herr, Amy E.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2025.
- 초록/해제
- 요약Understanding cellular heterogeneity at the single-cell level is crucial for deciphering complex biological processes, including disease progression and gene regulation. Advancements in microfluidics have enabled multimodal analysis of individual cells by integrating genomic, epigenomic, transcriptomic, and/or proteomic measurements. Here, we describe the design, development and application of single-cell multimodal assays, specifically paired measurement of DNA damage and protein expression, paired PCR/qPCR and cytoplasmic protein measurements, and paired PCR and nuclear and cytoplasmic protein measurements.Exemplar of this line of inquiry, we investigate apoptosis at single-cell resolution by describing our published Single-cell Electrophoresis-based Viability and Protein (SEVAP) assay. These simultaneous measurements capture a single-time-point of proteoform expression and viability for hundreds of single cells to investigate apoptosis, which require precise timing and analysis of single cells. By performing in-gel DNA staining and immunoprobing within an open microfluidic device, SEVAP achieves separation of intact and fragmented DNA, as well as full-length and cleaved PARP1, demonstrating simultaneous protein isoform analysis and classification of apoptotic versus viable cells. Extending beyond apoptosis, our published TriBlot assay integrates single-cell PCR, qPCR, and immunoblotting. The TriBlot assay achieves same-cell profiling of DNA, mRNA, and proteins, overcoming the specificity limitations of antibody-based protein detection by integrating electrophoretic separation. The TriBlot provides insights into protein expression and its correlation with nucleic acid states.Work towards integrating spatial-omics with single-cell proteomics is demonstrated by developing a photopatterning approach that optimizes spatial density, increasing array density for spatial analysis of single-cell electrophoresis and immunoblotting. This method employs photopolymerization techniques to create small-pore-size barrier regions and larger-pore-size regions, reducing protein diffusion and increasing microwell density. By refining lane spacing and optimizing pore sizes, this technique increases spatial density for protein analysis, paving the way for single-cell spatial-omics assays.For paired measurements of nuclear and cytoplasmic proteins and DNA from single cells, the SplitBlot assay integrates PCR-based genomic DNA analysis with Western blot-based protein detection. The Western blot-based detection avoids current limitations in the nuclear protein detection analysis of single-cell multimodal essays related to cell fixation. This microfluidic device separates molecules by encapsulating nuclear DNA in agarose while electrophoretically resolving nuclear and cytoplasmic proteins-specifically, nuclear histone H3 and cytoplasmic beta-actin-in polyacrylamide. By retrieving single-cell DNA for PCR while analyzing the single-cell nuclear and cytoplasmic proteins in-gel, we perform paired single-cell genotype and protein expression measurements. Finally, the VacTrap system enables spatial indexing of isolated nuclei. This high-throughput microfluidic device employs vacuum-assisted transfer to relocate nuclei from lysed mammalian cells into microwells. This facilitates direct mapping of nuclei to the proteome, improving the throughput of single-cell multiomics immunoblotting assays.Together, these advancements offer tools for dissecting cellular heterogeneity by integrating DNA damage, genomic, or transcriptomic and proteomic data with single-cell resolution.
- 일반주제명
- Bioengineering
- 일반주제명
- Cellular biology
- 일반주제명
- Bioinformatics
- 일반주제명
- Genetics
- 키워드
- Gene regulation
- 키워드
- Immunoblotting
- 기타저자
- University of California, Berkeley Bioengineering
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798288865411
■035 ▼a(MiAaPQ)AAI32042432
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a610
■1001 ▼aGomez Martinez, Ana Esmeralda.
■24510▼aMicrofluidic Devices for Multimodal Single-Cell Assays
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a146 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Herr, Amy E.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2025.
■520 ▼aUnderstanding cellular heterogeneity at the single-cell level is crucial for deciphering complex biological processes, including disease progression and gene regulation. Advancements in microfluidics have enabled multimodal analysis of individual cells by integrating genomic, epigenomic, transcriptomic, and/or proteomic measurements. Here, we describe the design, development and application of single-cell multimodal assays, specifically paired measurement of DNA damage and protein expression, paired PCR/qPCR and cytoplasmic protein measurements, and paired PCR and nuclear and cytoplasmic protein measurements.Exemplar of this line of inquiry, we investigate apoptosis at single-cell resolution by describing our published Single-cell Electrophoresis-based Viability and Protein (SEVAP) assay. These simultaneous measurements capture a single-time-point of proteoform expression and viability for hundreds of single cells to investigate apoptosis, which require precise timing and analysis of single cells. By performing in-gel DNA staining and immunoprobing within an open microfluidic device, SEVAP achieves separation of intact and fragmented DNA, as well as full-length and cleaved PARP1, demonstrating simultaneous protein isoform analysis and classification of apoptotic versus viable cells. Extending beyond apoptosis, our published TriBlot assay integrates single-cell PCR, qPCR, and immunoblotting. The TriBlot assay achieves same-cell profiling of DNA, mRNA, and proteins, overcoming the specificity limitations of antibody-based protein detection by integrating electrophoretic separation. The TriBlot provides insights into protein expression and its correlation with nucleic acid states.Work towards integrating spatial-omics with single-cell proteomics is demonstrated by developing a photopatterning approach that optimizes spatial density, increasing array density for spatial analysis of single-cell electrophoresis and immunoblotting. This method employs photopolymerization techniques to create small-pore-size barrier regions and larger-pore-size regions, reducing protein diffusion and increasing microwell density. By refining lane spacing and optimizing pore sizes, this technique increases spatial density for protein analysis, paving the way for single-cell spatial-omics assays.For paired measurements of nuclear and cytoplasmic proteins and DNA from single cells, the SplitBlot assay integrates PCR-based genomic DNA analysis with Western blot-based protein detection. The Western blot-based detection avoids current limitations in the nuclear protein detection analysis of single-cell multimodal essays related to cell fixation. This microfluidic device separates molecules by encapsulating nuclear DNA in agarose while electrophoretically resolving nuclear and cytoplasmic proteins-specifically, nuclear histone H3 and cytoplasmic beta-actin-in polyacrylamide. By retrieving single-cell DNA for PCR while analyzing the single-cell nuclear and cytoplasmic proteins in-gel, we perform paired single-cell genotype and protein expression measurements. Finally, the VacTrap system enables spatial indexing of isolated nuclei. This high-throughput microfluidic device employs vacuum-assisted transfer to relocate nuclei from lysed mammalian cells into microwells. This facilitates direct mapping of nuclei to the proteome, improving the throughput of single-cell multiomics immunoblotting assays.Together, these advancements offer tools for dissecting cellular heterogeneity by integrating DNA damage, genomic, or transcriptomic and proteomic data with single-cell resolution.
■590 ▼aSchool code: 0028.
■650 4▼aBioengineering
■650 4▼aCellular biology
■650 4▼aBioinformatics
■650 4▼aGenetics
■653 ▼aCellular heterogeneity
■653 ▼aGene regulation
■653 ▼aAntibody-based protein detection
■653 ▼aImmunoblotting
■690 ▼a0202
■690 ▼a0379
■690 ▼a0369
■690 ▼a0715
■71020▼aUniversity of California, Berkeley▼bBioengineering.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357789▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


