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High-Throughput Discovery and Optimization of High Affinity and High Specificity Aptamers
High-Throughput Discovery and Optimization of High Affinity and High Specificity Aptamers
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105614
- ISBN
- 9798265427144
- DDC
- 612
- 서명/저자
- High-Throughput Discovery and Optimization of High Affinity and High Specificity Aptamers
- 발행사항
- [Sl] : Stanford University, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 133 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 주기사항
- Advisor: Soh, H. Tom.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2023.
- 초록/해제
- 요약Aptamers are synthetic affinity reagents useful for measuring and studying small molecules in biological systems. Unfortunately, the bottleneck in aptamer discovery platforms is the low throughput and high failure rate of canonical aptamer selection methods. To address these issues, I created a high-throughput screening platform to enable multiplexed, simultaneous discovery of specific aptamers against different targets. Canonically, aptamer selections must use techniques such as "counterselection" to ensure aptamer specificity. Unfortunately, using counterselection forces aptamer selections to be single-plex. I developed a platform to identify specific aptamers and forgo the need for techniques such as counterselection. Using a modified a benchtop DNA sequencer, I measured the affinity and specificity for ~106 aptamer clusters. I identified rare, specific aptamers that are able to distinguish between small-molecule metabolites differing by a single hydroxyl group. Further, the platform allows us to optimize and utilize existing aptamers previously limited to fixed environmental conditions. Many published aptamers have been discovered under non-physiological environments. However, changing from selection conditions can reduce aptamer affinity and prevents the use of many aptamers. I demonstrated that small mutations in aptamer sequence can stabilize aptamer affinity in physiological conditions. Understanding structure-mechanism relationships that enable aptamer specificity has often been limited to specialized groups. Thus, improving aptamers through rational design guided by structural information has been largely inaccessible. I developed a novel method to investigate aptamer specificity; the pipeline uses experimental data to guide a computational pipeline for reliable structure determination. My work seeks to address the need for high affinity and high specificity aptamers by enabling multiplexed aptamer discovery and broadening aptamer usability for previously discovered aptamers.
- 일반주제명
- Physiology
- 일반주제명
- Acids
- 일반주제명
- Histograms
- 일반주제명
- Reagents
- 일반주제명
- Caffeine
- 일반주제명
- Mutation
- 일반주제명
- Glucose
- 일반주제명
- Biomarkers
- 일반주제명
- Design
- 일반주제명
- Standard scores
- 일반주제명
- Biosensors
- 일반주제명
- Metabolites
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798265427144
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a612
■1001 ▼aWan, Leighton Terrance.
■24510▼aHigh-Throughput Discovery and Optimization of High Affinity and High Specificity Aptamers
■260 ▼a[Sl]▼bStanford University▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a133 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Soh, H. Tom.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2023.
■520 ▼aAptamers are synthetic affinity reagents useful for measuring and studying small molecules in biological systems. Unfortunately, the bottleneck in aptamer discovery platforms is the low throughput and high failure rate of canonical aptamer selection methods. To address these issues, I created a high-throughput screening platform to enable multiplexed, simultaneous discovery of specific aptamers against different targets. Canonically, aptamer selections must use techniques such as "counterselection" to ensure aptamer specificity. Unfortunately, using counterselection forces aptamer selections to be single-plex. I developed a platform to identify specific aptamers and forgo the need for techniques such as counterselection. Using a modified a benchtop DNA sequencer, I measured the affinity and specificity for ~106 aptamer clusters. I identified rare, specific aptamers that are able to distinguish between small-molecule metabolites differing by a single hydroxyl group. Further, the platform allows us to optimize and utilize existing aptamers previously limited to fixed environmental conditions. Many published aptamers have been discovered under non-physiological environments. However, changing from selection conditions can reduce aptamer affinity and prevents the use of many aptamers. I demonstrated that small mutations in aptamer sequence can stabilize aptamer affinity in physiological conditions. Understanding structure-mechanism relationships that enable aptamer specificity has often been limited to specialized groups. Thus, improving aptamers through rational design guided by structural information has been largely inaccessible. I developed a novel method to investigate aptamer specificity; the pipeline uses experimental data to guide a computational pipeline for reliable structure determination. My work seeks to address the need for high affinity and high specificity aptamers by enabling multiplexed aptamer discovery and broadening aptamer usability for previously discovered aptamers.
■590 ▼aSchool code: 0212.
■650 4▼aPhysiology
■650 4▼aAcids
■650 4▼aHistograms
■650 4▼aReagents
■650 4▼aCaffeine
■650 4▼aMutation
■650 4▼aGlucose
■650 4▼aBiomarkers
■650 4▼aDesign
■650 4▼aStandard scores
■650 4▼aBiosensors
■650 4▼aMetabolites
■690 ▼a0389
■690 ▼a0719
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360753▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


