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Myeloid and Granulocyte Contributions to Therapeutic Resistance and Cancer Progression
Myeloid and Granulocyte Contributions to Therapeutic Resistance and Cancer Progression
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105232
- ISBN
- 9798291567432
- DDC
- 616.99
- 서명/저자
- Myeloid and Granulocyte Contributions to Therapeutic Resistance and Cancer Progression
- 발행사항
- [Sl] : University of Michigan, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 194 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Green, Michael D.;Zou, Weiping.
- 학위논문주기
- Thesis (Ph.D.)--University of Michigan, 2025.
- 초록/해제
- 요약Metastatic sites have differential effects on clinical outcomes, and this associates with systemic immune reprogramming. Extensive research defines mechanisms mediating initial metastatic spread, including those involving the immune system. However, following the establishment of the initial site of metastasis, less is known about how the location of the metastasis influences interactions with the immune system to induce systemic changes.Liver metastases are associated with poor cancer outcomes in many solid malignancies. The liver is the sixth most common site of primary cancer in humans and is a frequent site of metastasis from other solid tumors. The liver is a functionally unique organ with an immunosuppressive microenvironment. The development of effective therapies for primary and metastatic liver cancer has been challenging due to the complex metabolic and immune microenvironment of the liver. Primary liver cancer is characterized by cancer-associated fibroblasts, immunosuppressive CD68+ macrophages, tumor associated neutrophils, type 2 dendritic cells, reduced density of B cells, and the presence of myeloid derived suppressor cells and some populations of innate lymphoid cells. However, the tumor microenvironment of liver metastasis is composed of immunosuppressive macrophages, a paucity of dendritic cells, and induction of peripheral tolerance via induction of Tregs. In both primary and secondary liver cancer, a robust CD8+ T cell anti-tumor immune response is critical; absence of antigen-specific CD8+ T cells is associated with poor prognosis in both primary and secondary liver cancers.Importantly, the factors influencing the trajectory of patients with liver metastases are poorly defined. It is known that liver metastases suppress systemic antitumor immunity; however, the underlying mechanisms remain incompletely described. We report that liver metastases promote disease progression in patients and preclinical models. Patients with liver metastases progress rapidly, regardless of primary tumor type. In multiple murine models, we find that liver metastases potentiate reprogramming of neutrophil migration and activity, specifically NETosis. These neutrophils are necessary and sufficient for disease progression associated with liver metastases. We describe crucial metastasis-immune interactions that influence subsequent metastatic spread and disease progression. G-CSF promotes mobilization of neutrophils into circulation, whereas IL-1 promotes localization into tissue and neutrophil activation. Neutrophils licensed by liver metastasis augment metastatic colonization in an IL-1 dependent fashion. Transcriptomic analyses suggest that pulmonary macrophages and neutrophils may be the source of IL-1 in the setting of liver metastasis. Thus, liver metastasis rewires systemic immunity to promote cancer progression. Future work should define the precise source of IL-1, define the relative contributions of IL-1α versus IL-1β, determine how reprogrammed neutrophils contribute to disease progression, and investigate whether other sites of metastasis similarly reprogram neutrophils.A deeper understanding of the immunosuppressive microenvironment of the liver will inform novel therapies and therapeutic combinations to improve outcomes of patients with primary and secondary liver cancer. This work has implications for novel treatment strategies to address the poor clinical outcomes associated with liver metastasis. Specifically, this work suggests that systemic treatments targeting IL-1 in patients with liver metastasis may improve clinical outcomes. Additionally, this work expands our understanding of how metastases can reprogram myeloid cells, specifically neutrophils, to contribute to poor clinical outcomes. Lastly, this work has implications for how physicians approach treatment of metastatic disease, motivating view of certain sites of metastasis as a shared feature among many cancer types, and warranting investigation into systemic therapies to reduce immunosuppression associated with those sites.
- 일반주제명
- Oncology
- 일반주제명
- Immunology
- 일반주제명
- Cellular biology
- 일반주제명
- Genetics
- 키워드
- Metastatic sites
- 기타저자
- University of Michigan Immunology
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105232
■006m o d
■007cr#unu||||||||
■020 ▼a9798291567432
■035 ▼a(MiAaPQ)AAI32271911
■035 ▼a(MiAaPQ)umichrackham006222
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616.99
■1001 ▼aPearson, Ashley N.
■24510▼aMyeloid and Granulocyte Contributions to Therapeutic Resistance and Cancer Progression
■260 ▼a[Sl]▼bUniversity of Michigan▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a194 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Green, Michael D.;Zou, Weiping.
■5021 ▼aThesis (Ph.D.)--University of Michigan, 2025.
■520 ▼aMetastatic sites have differential effects on clinical outcomes, and this associates with systemic immune reprogramming. Extensive research defines mechanisms mediating initial metastatic spread, including those involving the immune system. However, following the establishment of the initial site of metastasis, less is known about how the location of the metastasis influences interactions with the immune system to induce systemic changes.Liver metastases are associated with poor cancer outcomes in many solid malignancies. The liver is the sixth most common site of primary cancer in humans and is a frequent site of metastasis from other solid tumors. The liver is a functionally unique organ with an immunosuppressive microenvironment. The development of effective therapies for primary and metastatic liver cancer has been challenging due to the complex metabolic and immune microenvironment of the liver. Primary liver cancer is characterized by cancer-associated fibroblasts, immunosuppressive CD68+ macrophages, tumor associated neutrophils, type 2 dendritic cells, reduced density of B cells, and the presence of myeloid derived suppressor cells and some populations of innate lymphoid cells. However, the tumor microenvironment of liver metastasis is composed of immunosuppressive macrophages, a paucity of dendritic cells, and induction of peripheral tolerance via induction of Tregs. In both primary and secondary liver cancer, a robust CD8+ T cell anti-tumor immune response is critical; absence of antigen-specific CD8+ T cells is associated with poor prognosis in both primary and secondary liver cancers.Importantly, the factors influencing the trajectory of patients with liver metastases are poorly defined. It is known that liver metastases suppress systemic antitumor immunity; however, the underlying mechanisms remain incompletely described. We report that liver metastases promote disease progression in patients and preclinical models. Patients with liver metastases progress rapidly, regardless of primary tumor type. In multiple murine models, we find that liver metastases potentiate reprogramming of neutrophil migration and activity, specifically NETosis. These neutrophils are necessary and sufficient for disease progression associated with liver metastases. We describe crucial metastasis-immune interactions that influence subsequent metastatic spread and disease progression. G-CSF promotes mobilization of neutrophils into circulation, whereas IL-1 promotes localization into tissue and neutrophil activation. Neutrophils licensed by liver metastasis augment metastatic colonization in an IL-1 dependent fashion. Transcriptomic analyses suggest that pulmonary macrophages and neutrophils may be the source of IL-1 in the setting of liver metastasis. Thus, liver metastasis rewires systemic immunity to promote cancer progression. Future work should define the precise source of IL-1, define the relative contributions of IL-1α versus IL-1β, determine how reprogrammed neutrophils contribute to disease progression, and investigate whether other sites of metastasis similarly reprogram neutrophils.A deeper understanding of the immunosuppressive microenvironment of the liver will inform novel therapies and therapeutic combinations to improve outcomes of patients with primary and secondary liver cancer. This work has implications for novel treatment strategies to address the poor clinical outcomes associated with liver metastasis. Specifically, this work suggests that systemic treatments targeting IL-1 in patients with liver metastasis may improve clinical outcomes. Additionally, this work expands our understanding of how metastases can reprogram myeloid cells, specifically neutrophils, to contribute to poor clinical outcomes. Lastly, this work has implications for how physicians approach treatment of metastatic disease, motivating view of certain sites of metastasis as a shared feature among many cancer types, and warranting investigation into systemic therapies to reduce immunosuppression associated with those sites.
■590 ▼aSchool code: 0127.
■650 4▼aOncology
■650 4▼aImmunology
■650 4▼aCellular biology
■650 4▼aGenetics
■653 ▼aMyeloid and granulocyte contributions
■653 ▼aCancer progression
■653 ▼aTherapeutic resistance
■653 ▼aMetastatic sites
■653 ▼aSolid malignancies
■690 ▼a0982
■690 ▼a0992
■690 ▼a0379
■690 ▼a0369
■71020▼aUniversity of Michigan▼bImmunology.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0127
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359897▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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