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Structural Insights into an Immune Checkpoint Receptor Reveal a Novel Approach to Cancer Immunotherapy
Structural Insights into an Immune Checkpoint Receptor Reveal a Novel Approach to Cancer Immunotherapy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105827
- ISBN
- 9798265428448
- DDC
- 616.079
- 서명/저자
- Structural Insights into an Immune Checkpoint Receptor Reveal a Novel Approach to Cancer Immunotherapy
- 발행사항
- [Sl] : Stanford University, 2023
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2023
- 형태사항
- 114 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Cochran, Jennifer.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2023.
- 초록/해제
- 요약Immunotherapy has revolutionized cancer treatment, but the limited response rates to current checkpoint inhibitors necessitate the identification of additional immunotherapeutic approaches. Lymphocyte-activation gene 3 (LAG-3) has emerged as a potential orthogonal checkpoint molecule that negatively regulates T cell activation. First-generation monoclonal antibodies against LAG-3 demonstrated moderate success, despite a lack of knowledge about the mechanism by which LAG-3 functions. This thesis aims to provide key details focused on LAG3 structural characterization, including functional consequences of LAG-3 dimerization on ligand binding and activation, as well as epitope mapping of murine and clinical human LAG-3 antibodies.The first major accomplishment of this work was the elucidation of the crystal structure of the glycosylated mouse LAG-3 extracellular domain, providing valuable insights into its overall architecture and molecular features. This structural information, which was generated in collaboration with Irimpan Mathews at SLAC, served as a foundation for further investigations into the functional aspects of LAG-3. By employing sophisticated biochemical and biophysical techniques in collaborative work with the laboratories of Jun Wang and Xiang-Peng Kong at NYU, we demonstrated that disruption of D2 domain dimerization severely compromised LAG-3's ability to engage with its ligands and modulate T-cell responses. To further explore the potential therapeutic implications of disrupting LAG-3 dimerization, we performed fine epitope mapping of an antibody called C9B7W, known to bind the LAG-3 D2 domain that we identified as being key to LAG-3 dimerization. The study pinpointed the binding site of C9B7W squarely at the D2 dimerization interface, suggesting a potential mechanism by which this antibody disrupts LAG-3 function. Epitope mapping and electron microscopy showed that like C9B7W, murine antibodies which bind LAG-3 D1 and D3 can also disrupt dimerization and ligand binding.Lastly, we undertook a comprehensive epitope mapping analysis of 11 currently known human LAG-3 antibodies under clinical development. Intriguingly, unlike C9B7W, none of the LAG-3 antibodies under clinical development bound to the D2 dimerization interface, and all bound to the LAG-3 D1 domain, some with overlapping and others with disparate epitopes. Collectively, these findings significantly contribute to our understanding of LAG-3 biology and provide crucial insights into its therapeutic potential. The structural characterization, identification of the critical role of D2 dimerization, and epitope mapping of disruptive and clinical human LAG-3 antibodies pave the way for the development of novel immunotherapeutic strategies targeting LAG-3 in the fight against cancer and other immune-related diseases.
- 일반주제명
- T cell receptors
- 일반주제명
- Homeostasis
- 일반주제명
- Glycoproteins
- 일반주제명
- Immunotherapy
- 일반주제명
- Disease
- 일반주제명
- Cancer therapies
- 일반주제명
- Immune system
- 일반주제명
- Lymphocytes
- 일반주제명
- Clinical trials
- 일반주제명
- Antigens
- 일반주제명
- Yeast
- 일반주제명
- Viral infections
- 일반주제명
- Genotype & phenotype
- 일반주제명
- Cell growth
- 일반주제명
- Genome editing
- 일반주제명
- Clinical outcomes
- 일반주제명
- Parkinson's disease
- 일반주제명
- Cellular biology
- 일반주제명
- Genetics
- 일반주제명
- Immunology
- 일반주제명
- Neurosciences
- 일반주제명
- Oncology
- 일반주제명
- Pharmaceutical sciences
- 일반주제명
- Physiology
- 일반주제명
- Virology
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105827
■006m o d
■007cr#unu||||||||
■020 ▼a9798265428448
■035 ▼a(MiAaPQ)AAI32316490
■035 ▼a(MiAaPQ)Stanfordkn512tb1251
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616.079
■1001 ▼aSilberstein, John Louis.
■24510▼aStructural Insights into an Immune Checkpoint Receptor Reveal a Novel Approach to Cancer Immunotherapy
■260 ▼a[Sl]▼bStanford University▼c2023
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2023
■300 ▼a114 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Cochran, Jennifer.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2023.
■520 ▼aImmunotherapy has revolutionized cancer treatment, but the limited response rates to current checkpoint inhibitors necessitate the identification of additional immunotherapeutic approaches. Lymphocyte-activation gene 3 (LAG-3) has emerged as a potential orthogonal checkpoint molecule that negatively regulates T cell activation. First-generation monoclonal antibodies against LAG-3 demonstrated moderate success, despite a lack of knowledge about the mechanism by which LAG-3 functions. This thesis aims to provide key details focused on LAG3 structural characterization, including functional consequences of LAG-3 dimerization on ligand binding and activation, as well as epitope mapping of murine and clinical human LAG-3 antibodies.The first major accomplishment of this work was the elucidation of the crystal structure of the glycosylated mouse LAG-3 extracellular domain, providing valuable insights into its overall architecture and molecular features. This structural information, which was generated in collaboration with Irimpan Mathews at SLAC, served as a foundation for further investigations into the functional aspects of LAG-3. By employing sophisticated biochemical and biophysical techniques in collaborative work with the laboratories of Jun Wang and Xiang-Peng Kong at NYU, we demonstrated that disruption of D2 domain dimerization severely compromised LAG-3's ability to engage with its ligands and modulate T-cell responses. To further explore the potential therapeutic implications of disrupting LAG-3 dimerization, we performed fine epitope mapping of an antibody called C9B7W, known to bind the LAG-3 D2 domain that we identified as being key to LAG-3 dimerization. The study pinpointed the binding site of C9B7W squarely at the D2 dimerization interface, suggesting a potential mechanism by which this antibody disrupts LAG-3 function. Epitope mapping and electron microscopy showed that like C9B7W, murine antibodies which bind LAG-3 D1 and D3 can also disrupt dimerization and ligand binding.Lastly, we undertook a comprehensive epitope mapping analysis of 11 currently known human LAG-3 antibodies under clinical development. Intriguingly, unlike C9B7W, none of the LAG-3 antibodies under clinical development bound to the D2 dimerization interface, and all bound to the LAG-3 D1 domain, some with overlapping and others with disparate epitopes. Collectively, these findings significantly contribute to our understanding of LAG-3 biology and provide crucial insights into its therapeutic potential. The structural characterization, identification of the critical role of D2 dimerization, and epitope mapping of disruptive and clinical human LAG-3 antibodies pave the way for the development of novel immunotherapeutic strategies targeting LAG-3 in the fight against cancer and other immune-related diseases.
■590 ▼aSchool code: 0212.
■650 4▼aImmune checkpoint inhibitors
■650 4▼aT cell receptors
■650 4▼aHomeostasis
■650 4▼aGlycoproteins
■650 4▼aImmunotherapy
■650 4▼aDisease
■650 4▼aCancer therapies
■650 4▼aImmune system
■650 4▼aLymphocytes
■650 4▼aClinical trials
■650 4▼aAntigens
■650 4▼aYeast
■650 4▼aViral infections
■650 4▼aGenotype & phenotype
■650 4▼aCell growth
■650 4▼aGenome editing
■650 4▼aClinical outcomes
■650 4▼aParkinson's disease
■650 4▼aCellular biology
■650 4▼aGenetics
■650 4▼aImmunology
■650 4▼aNeurosciences
■650 4▼aOncology
■650 4▼aPharmaceutical sciences
■650 4▼aPhysiology
■650 4▼aVirology
■690 ▼a0379
■690 ▼a0369
■690 ▼a0982
■690 ▼a0317
■690 ▼a0992
■690 ▼a0572
■690 ▼a0719
■690 ▼a0720
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361292▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


