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Dendritic Epidermal T Cells Seed the Perinatal Intestines and Orchestrate Early Life Immune Defenses
Dendritic Epidermal T Cells Seed the Perinatal Intestines and Orchestrate Early Life Immune Defenses
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105615
- ISBN
- 9798265429285
- DDC
- 570
- 서명/저자
- Dendritic Epidermal T Cells Seed the Perinatal Intestines and Orchestrate Early Life Immune Defenses
- 발행사항
- [Sl] : Stanford University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 162 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Butcher, Eugene.
- 학위논문주기
- Thesis (Ph.D.)--Stanford University, 2025.
- 초록/해제
- 요약The intestinal epithelium forms an essential barrier between the body and external environment, yet during early life this barrier is immature and vulnerable to pathogen invasion. How immune defenses are established in the perinatal intestines prior to the development of adaptive immunity remains poorly understood. This dissertation investigates two cell types with potential contributions to early life intestinal immunity: dendritic epidermal T cells (DETCs) in the colon and the trafficking of intraepithelial lymphocyte progenitors (IELp) via somatostatin-SSTR2 signaling. In my primary work, I show that DETCs are the predominant T cell population in the perinatal colon, recruited through GPR15-GPR15L signaling. Once positioned as colonic intraepithelial lymphocytes, DETCs resemble their skin counterparts, expressing classical DETC markers, cytotoxic molecules, cytokines, and surveillance receptors. Functionally, colonic DETCs induce α-defensin expression, directly programming epithelial defenses. Loss of DETC recruitment compromises these processes and increases susceptibility to infection, underscoring their protective role in neonatal intestinal immunity.In complementary work published in Nature Immunology, I contributed to defining an SSTR2-somatostatin chemotactic axis that guides IELp homing to the intestine. SSTR2 is expressed on thymic IELp cells, while somatostatin is expressed by neuronal, immune, endothelial, and enteroendocrine cells in the neonatal colon. IELp trafficking establishes CD8αα⁺ IELs, which provide frontline protection against epithelial injury and infection. Together, these findings uncover critical pathways by which specialized T cells seed and prepare the developing intestinal epithelium and immune microenvironment for early-life immune defenses.
- 일반주제명
- Growth factors
- 일반주제명
- Infections
- 일반주제명
- Homeostasis
- 일반주제명
- Pathogens
- 일반주제명
- Chemokines
- 일반주제명
- Salmonella
- 일반주제명
- Cytotoxicity
- 일반주제명
- Wound healing
- 일반주제명
- Liver
- 일반주제명
- Mortality
- 일반주제명
- Colon
- 일반주제명
- Immune system
- 일반주제명
- Connective tissue
- 일반주제명
- Cytokines
- 일반주제명
- Lymphocytes
- 일반주제명
- Flow cytometry
- 일반주제명
- Inflammation
- 일반주제명
- Pathogenesis
- 일반주제명
- Adaptive immunity
- 일반주제명
- Small intestine
- 일반주제명
- Postpartum period
- 일반주제명
- Interferon
- 일반주제명
- Cellular biology
- 일반주제명
- Immunology
- 일반주제명
- Microbiology
- 일반주제명
- Obstetrics
- 일반주제명
- Pathology
- 일반주제명
- Pharmaceutical sciences
- 일반주제명
- Physiology
- 기타저자
- Stanford University.
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798265429285
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■1001 ▼aGaafarelkhalifa, Mohammed Ahmed.
■24510▼aDendritic Epidermal T Cells Seed the Perinatal Intestines and Orchestrate Early Life Immune Defenses
■260 ▼a[Sl]▼bStanford University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a162 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Butcher, Eugene.
■5021 ▼aThesis (Ph.D.)--Stanford University, 2025.
■520 ▼aThe intestinal epithelium forms an essential barrier between the body and external environment, yet during early life this barrier is immature and vulnerable to pathogen invasion. How immune defenses are established in the perinatal intestines prior to the development of adaptive immunity remains poorly understood. This dissertation investigates two cell types with potential contributions to early life intestinal immunity: dendritic epidermal T cells (DETCs) in the colon and the trafficking of intraepithelial lymphocyte progenitors (IELp) via somatostatin-SSTR2 signaling. In my primary work, I show that DETCs are the predominant T cell population in the perinatal colon, recruited through GPR15-GPR15L signaling. Once positioned as colonic intraepithelial lymphocytes, DETCs resemble their skin counterparts, expressing classical DETC markers, cytotoxic molecules, cytokines, and surveillance receptors. Functionally, colonic DETCs induce α-defensin expression, directly programming epithelial defenses. Loss of DETC recruitment compromises these processes and increases susceptibility to infection, underscoring their protective role in neonatal intestinal immunity.In complementary work published in Nature Immunology, I contributed to defining an SSTR2-somatostatin chemotactic axis that guides IELp homing to the intestine. SSTR2 is expressed on thymic IELp cells, while somatostatin is expressed by neuronal, immune, endothelial, and enteroendocrine cells in the neonatal colon. IELp trafficking establishes CD8αα⁺ IELs, which provide frontline protection against epithelial injury and infection. Together, these findings uncover critical pathways by which specialized T cells seed and prepare the developing intestinal epithelium and immune microenvironment for early-life immune defenses.
■590 ▼aSchool code: 0212.
■650 4▼aGrowth factors
■650 4▼aInfections
■650 4▼aHomeostasis
■650 4▼aPathogens
■650 4▼aChemokines
■650 4▼aSalmonella
■650 4▼aCytotoxicity
■650 4▼aWound healing
■650 4▼aLiver
■650 4▼aMortality
■650 4▼aColon
■650 4▼aImmune system
■650 4▼aConnective tissue
■650 4▼aCytokines
■650 4▼aLymphocytes
■650 4▼aFlow cytometry
■650 4▼aInflammation
■650 4▼aPathogenesis
■650 4▼aAdaptive immunity
■650 4▼aSmall intestine
■650 4▼aPostpartum period
■650 4▼aInterferon
■650 4▼aCellular biology
■650 4▼aImmunology
■650 4▼aMicrobiology
■650 4▼aObstetrics
■650 4▼aPathology
■650 4▼aPharmaceutical sciences
■650 4▼aPhysiology
■690 ▼a0379
■690 ▼a0982
■690 ▼a0410
■690 ▼a0380
■690 ▼a0571
■690 ▼a0572
■690 ▼a0719
■71020▼aStanford University.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0212
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360755▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


