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T Cell-Mediated Mechanisms in Autoimmune Diseases: Epigenetic Regulation by UTX in Type 1 Diabetes and Clonal Dynamics in Chronic Inflammatory Neuropathy
T Cell-Mediated Mechanisms in Autoimmune Diseases: Epigenetic Regulation by UTX in Type 1 Diabetes and Clonal Dynamics in Chronic Inflammatory Neuropathy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105145
- ISBN
- 9798293834778
- DDC
- 616.079
- 저자명
- Chen, Ho-Chung.
- 서명/저자
- T Cell-Mediated Mechanisms in Autoimmune Diseases: Epigenetic Regulation by UTX in Type 1 Diabetes and Clonal Dynamics in Chronic Inflammatory Neuropathy
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 106 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Su, Maureen An-Ping.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약Type 1 Diabetes Mellitus (T1D) and autoimmune neuropathies, including chronic inflammatory demyelinating polyneuropathy (CIDP), can both have a devastating effect on a patient's quality of life as they represent an integrated systems approach to a complex negative health outcome characterized by multifaceted pathogenic mechanisms and lack of therapeutic interventions. T1D has an unrelenting autoimmune destruction of pancreatic beta cells leading to continued and life-long insulin dependence along with high rates of life-threatening complications. CIDP also poses numerous challenges in clinical practice due to chronic inflammation, demyelination and occasionally challenging or varying responses to current therapies. To discuss T cell-mediated pathobiology in T1D and CIDP provides an opportunity to more clearly drive understanding towards the development of new treatments and improvement in patient outcomes.This dissertation explores the role of the epigenetic regulator UTX in the development of type 1 diabetes (T1D). Using T cell-specific UTX-deficient NOD mice, we demonstrate significant protection against diabetes development via loss of UTX, which acts by inhibiting stem-like progenitor CD8+ T cells differentiation into cytolytic effector cells. Integrative genomic analyses showed direct UTX binding at the progenitor and effector gene loci, able to directly regulate chromatin accessibility and gene expression that are required for T cell differentiation. Notably, UTX's function in promoting this differentiation is not dependent on UTX's inherent histone demethylase activity, but rather the overall combination of the transcription factors TCF1 and STAT3 via UTX, forming a regulatory complex promoting autoimmune chronicity. Lastly, our findings extend to human type 1 diabetes as we reveal UTX also regulates differentiation from human stem-cell memory CD8+ T cells into terminal effector cells.In addition, this dissertation also examines autoimmune neuropathy, focusing on the T cell-mediated pathogenesis in chronic inflammatory demyelinating polyneuropathy (CIDP). Using single-cell RNA sequencing and T cell receptor profiling, we describe the clonal composition and phenotypic heterogeneity of T subsets identified in sciatic nerves from the mouse CIDP models. We identified new transcriptional states, different clonotypes of autoreactive CD8+ and CD4+ T cells, and new cytotoxic characteristics in regulatory T cells (Tregs) that could represent new aspects of the complexity of Treg behavior and clonal diversity in a chronic autoimmune neuropathy. In summary, this dissertation has advanced our understanding of T cell-mediated autoimmunity in disparate, yet highly related contexts, Type 1 Diabetes Mellitus (T1D) and CIDP. In T1D, we have characterized UTX as a critical regulator of CD8⁺ T cell differentiation and disease. Through transcription factor-mediated processes, we have also highlighted UTX as a crucial element in sustaining the chronicity of autoimmunity, which does not require histone demethylase activity. Most importantly, our study highlights UTX as an important potential target for intervention in T1D and reveals important principles of regulatory conservation in human disease. Taking this approach to autoimmune neuropathy, single-cell profiling in the CIDP models showed marked heterogeneity among T cell populations that included diverse and clonally expanded T cell populations, including atypical cytotoxic Tregs, and evidence supports the complex nature of T cell involvement in the processes involved with chronic autoimmune neuropathy.
- 일반주제명
- Immunology
- 일반주제명
- Cellular biology
- 일반주제명
- Health sciences
- 키워드
- Type 1 diabetes
- 키워드
- Inflammation
- 기타저자
- University of California, Los Angeles Microbiology Immunology & Molecular Genetics 0440
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798293834778
■035 ▼a(MiAaPQ)AAI32241084
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616.079
■1001 ▼aChen, Ho-Chung.
■24510▼aT Cell-Mediated Mechanisms in Autoimmune Diseases: Epigenetic Regulation by UTX in Type 1 Diabetes and Clonal Dynamics in Chronic Inflammatory Neuropathy
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a106 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Su, Maureen An-Ping.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aType 1 Diabetes Mellitus (T1D) and autoimmune neuropathies, including chronic inflammatory demyelinating polyneuropathy (CIDP), can both have a devastating effect on a patient's quality of life as they represent an integrated systems approach to a complex negative health outcome characterized by multifaceted pathogenic mechanisms and lack of therapeutic interventions. T1D has an unrelenting autoimmune destruction of pancreatic beta cells leading to continued and life-long insulin dependence along with high rates of life-threatening complications. CIDP also poses numerous challenges in clinical practice due to chronic inflammation, demyelination and occasionally challenging or varying responses to current therapies. To discuss T cell-mediated pathobiology in T1D and CIDP provides an opportunity to more clearly drive understanding towards the development of new treatments and improvement in patient outcomes.This dissertation explores the role of the epigenetic regulator UTX in the development of type 1 diabetes (T1D). Using T cell-specific UTX-deficient NOD mice, we demonstrate significant protection against diabetes development via loss of UTX, which acts by inhibiting stem-like progenitor CD8+ T cells differentiation into cytolytic effector cells. Integrative genomic analyses showed direct UTX binding at the progenitor and effector gene loci, able to directly regulate chromatin accessibility and gene expression that are required for T cell differentiation. Notably, UTX's function in promoting this differentiation is not dependent on UTX's inherent histone demethylase activity, but rather the overall combination of the transcription factors TCF1 and STAT3 via UTX, forming a regulatory complex promoting autoimmune chronicity. Lastly, our findings extend to human type 1 diabetes as we reveal UTX also regulates differentiation from human stem-cell memory CD8+ T cells into terminal effector cells.In addition, this dissertation also examines autoimmune neuropathy, focusing on the T cell-mediated pathogenesis in chronic inflammatory demyelinating polyneuropathy (CIDP). Using single-cell RNA sequencing and T cell receptor profiling, we describe the clonal composition and phenotypic heterogeneity of T subsets identified in sciatic nerves from the mouse CIDP models. We identified new transcriptional states, different clonotypes of autoreactive CD8+ and CD4+ T cells, and new cytotoxic characteristics in regulatory T cells (Tregs) that could represent new aspects of the complexity of Treg behavior and clonal diversity in a chronic autoimmune neuropathy. In summary, this dissertation has advanced our understanding of T cell-mediated autoimmunity in disparate, yet highly related contexts, Type 1 Diabetes Mellitus (T1D) and CIDP. In T1D, we have characterized UTX as a critical regulator of CD8⁺ T cell differentiation and disease. Through transcription factor-mediated processes, we have also highlighted UTX as a crucial element in sustaining the chronicity of autoimmunity, which does not require histone demethylase activity. Most importantly, our study highlights UTX as an important potential target for intervention in T1D and reveals important principles of regulatory conservation in human disease. Taking this approach to autoimmune neuropathy, single-cell profiling in the CIDP models showed marked heterogeneity among T cell populations that included diverse and clonally expanded T cell populations, including atypical cytotoxic Tregs, and evidence supports the complex nature of T cell involvement in the processes involved with chronic autoimmune neuropathy.
■590 ▼aSchool code: 0031.
■650 4▼aImmunology
■650 4▼aCellular biology
■650 4▼aHealth sciences
■653 ▼aAutoimmune diseases
■653 ▼aType 1 diabetes
■653 ▼aInflammation
■690 ▼a0982
■690 ▼a0566
■690 ▼a0379
■71020▼aUniversity of California, Los Angeles▼bMicrobiology, Immunology, & Molecular Genetics 0440.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359603▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


