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Myelin-Reactive CD8+ T Cells Influence Conventional Dendritic Cell Subsets Towards a Mature and Regulatory Phenotype in Experimental Autoimmune Encephalomyelitis
Myelin-Reactive CD8+ T Cells Influence Conventional Dendritic Cell Subsets Towards a Mature and Regulatory Phenotype in Experimental Autoimmune Encephalomyelitis
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103201
- ISBN
- 9798286435296
- DDC
- 616.07
- 서명/저자
- Myelin-Reactive CD8+ T Cells Influence Conventional Dendritic Cell Subsets Towards a Mature and Regulatory Phenotype in Experimental Autoimmune Encephalomyelitis
- 발행사항
- [Sl] : The University of Iowa, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 188 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Karandikar, Nitin J.;Harty, John.
- 학위논문주기
- Thesis (Ph.D.)--The University of Iowa, 2025.
- 초록/해제
- 요약Multiple sclerosis (MS), an autoimmune demyelinating disease of the central nervous system, is modeled in mice as experimental autoimmune encephalomyelitis (EAE). While CD4+ T cells, primarily Th1 and Th17 subsets, drive disease pathogenesis, the exact function of CD8+ T cells remains unclear. We previously demonstrated that adoptively transferred myelin-reactive CD8+ T cells (PLP-CD8) prevent EAE induction and suppress ongoing disease by engaging MHC Class-I in recipient mice. In my dissertation, I show that PLP-CD8 induce regulatory changes in both subsets of conventional dendritic cells (cDC1 and cDC2) in the spleens of the recipient mice in vivo and in vitro. Adoptively transferred PLP-CD8 promoted both cDC subsets to upregulate costimulatory and regulatory markers reflecting a mature and regulatory phenotype with an anti-inflammatory cytokine profile and a reduced capacity to support CD4+ T cell proliferation. In vitro, PLP-CD8 induced similar phenotypic changes in both cDC subsets in an antigen-specific, dose-dependent manner. PLP-CD8 directly interacted with cDC1 and indirectly influenced cDC2 through paracrine signaling. Notably, direct interaction with PLP-CD8 had detrimental effects on cDC2. However, the supernatant from this direct interaction did not cause similar changes in cDC2 and rather promoted a mature, regulatory profile reinforcing a contact-dependent negative effect of PLP-CD8 on cDC2. Single-cell RNA sequencing revealed upregulation of key immunoregulatory genes, such as Cd274 (PD-L1), Cd83, Mtor, Tgfb1 (TGF-β1) and Foxo3 with enrichment of immunoregulatory KEGG pathways predominantly in cDC2 but also in the cDC1 subset influenced by PLP-CD8. Our study highlights a novel mechanism in which myelin-reactive CD8+ T cells directly interact with cDC1 and modulate cDC2 through paracrine mechanisms to induce mature, regulatory dendritic cells, which leads to inhibited CD4+ T cell responses and reduced EAE pathogenesis.
- 일반주제명
- Pathology
- 일반주제명
- Immunology
- 일반주제명
- Cellular biology
- 일반주제명
- Molecular biology
- 키워드
- Autoimmunity
- 키워드
- Autoregulation
- 키워드
- CD8+ T cells
- 키워드
- Dendritic cells
- 기타저자
- The University of Iowa Pathology
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798286435296
■035 ▼a(MiAaPQ)AAI31999072
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616.07
■1001 ▼aUpadhye, Mohit A.
■24510▼aMyelin-Reactive CD8+ T Cells Influence Conventional Dendritic Cell Subsets Towards a Mature and Regulatory Phenotype in Experimental Autoimmune Encephalomyelitis
■260 ▼a[Sl]▼bThe University of Iowa▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a188 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Karandikar, Nitin J.;Harty, John.
■5021 ▼aThesis (Ph.D.)--The University of Iowa, 2025.
■520 ▼aMultiple sclerosis (MS), an autoimmune demyelinating disease of the central nervous system, is modeled in mice as experimental autoimmune encephalomyelitis (EAE). While CD4+ T cells, primarily Th1 and Th17 subsets, drive disease pathogenesis, the exact function of CD8+ T cells remains unclear. We previously demonstrated that adoptively transferred myelin-reactive CD8+ T cells (PLP-CD8) prevent EAE induction and suppress ongoing disease by engaging MHC Class-I in recipient mice. In my dissertation, I show that PLP-CD8 induce regulatory changes in both subsets of conventional dendritic cells (cDC1 and cDC2) in the spleens of the recipient mice in vivo and in vitro. Adoptively transferred PLP-CD8 promoted both cDC subsets to upregulate costimulatory and regulatory markers reflecting a mature and regulatory phenotype with an anti-inflammatory cytokine profile and a reduced capacity to support CD4+ T cell proliferation. In vitro, PLP-CD8 induced similar phenotypic changes in both cDC subsets in an antigen-specific, dose-dependent manner. PLP-CD8 directly interacted with cDC1 and indirectly influenced cDC2 through paracrine signaling. Notably, direct interaction with PLP-CD8 had detrimental effects on cDC2. However, the supernatant from this direct interaction did not cause similar changes in cDC2 and rather promoted a mature, regulatory profile reinforcing a contact-dependent negative effect of PLP-CD8 on cDC2. Single-cell RNA sequencing revealed upregulation of key immunoregulatory genes, such as Cd274 (PD-L1), Cd83, Mtor, Tgfb1 (TGF-β1) and Foxo3 with enrichment of immunoregulatory KEGG pathways predominantly in cDC2 but also in the cDC1 subset influenced by PLP-CD8. Our study highlights a novel mechanism in which myelin-reactive CD8+ T cells directly interact with cDC1 and modulate cDC2 through paracrine mechanisms to induce mature, regulatory dendritic cells, which leads to inhibited CD4+ T cell responses and reduced EAE pathogenesis.
■590 ▼aSchool code: 0096.
■650 4▼aPathology
■650 4▼aImmunology
■650 4▼aCellular biology
■650 4▼aMolecular biology
■653 ▼aAutoimmunity
■653 ▼aAutoregulation
■653 ▼aCD8+ T cells
■653 ▼aDendritic cells
■653 ▼aExperimental autoimmune encephalomyelitis
■653 ▼aMultiple sclerosis
■690 ▼a0571
■690 ▼a0982
■690 ▼a0379
■690 ▼a0307
■71020▼aThe University of Iowa▼bPathology.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0096
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357283▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


