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Charactering Monocyte-Lineage Cells in Mouse Synovial Tissue Using Fate-Mapping and Single Cell RNA Sequencing
Charactering Monocyte-Lineage Cells in Mouse Synovial Tissue Using Fate-Mapping and Single...
Charactering Monocyte-Lineage Cells in Mouse Synovial Tissue Using Fate-Mapping and Single Cell RNA Sequencing

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자료유형  
 학위논문 서양
최종처리일시  
20260202104807
ISBN  
9798291583937
DDC  
610
저자명  
Wang, Yidan.
서명/저자  
Charactering Monocyte-Lineage Cells in Mouse Synovial Tissue Using Fate-Mapping and Single Cell RNA Sequencing
발행사항  
[Sl] : Northwestern University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
190 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Fang, Deyu.
학위논문주기  
Thesis (Ph.D.)--Northwestern University, 2025.
초록/해제  
요약Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by joint swelling, cartilage damage, pannus formation, and bone erosion. Monocytes and macrophages are pivotal cell types that contribute to the pathogenesis of rheumatoid arthritis (RA). Despite their involvement in RA progression, the precise functions of monocytes in RA remain unclear. Notably, monocyte depletion in RA-like mouse models does not prevent the development of inflammatory arthritis, and the tools used to deplete monocytes frequently exhibit off-target effects, primarily on macrophages. In recent years, we identified a monocyte-lineage population, termed tissue-resident monocyte-linage cells (TRMC), which reside in the extravascular space and are at least partially embryonic-derived, and distinct from circulating monocytes and macrophages. However, the precise ontogeny and heterogeneity of TRMC remain unknown.In this thesis, we first investigated 19 lineage-tracing and reporter mouse models across all myeloid cell populations in the synovial tissue and peripheral blood. Specifically, we assessed the fidelity of these models in labeling TRMC and synovial macrophage subsets, as well as their off-target effects. Although no single model was found to selectively and comprehensively trace TRMC or synovial macrophage subsets, single-cell genomic datasets revealed additional candidate gene markers with the potential to improve specificity. Notably, the selectively positive labeling observed in some lineage tracing models suggests underlying heterogeneity within the TRMC population. To further explore this, we examined the heterogeneity and ontogeny of TRMC. Using bone marrow chimaeras and parabiosis mouse models, we demonstrated that TRMC originate from both embryonic and bone marrow-derived sources. Through single-cell transcriptomic analysis, we identified three distinct TRMC subsets, each with unique functions and developmental origins. One TRMC subset, MHCII+ TRMC, is Ccr2-dependent. During the progression of inflammatory arthritis in mice, the abundance and transcriptional profiles of the 3 TRMC subsets alter dynamically, suggesting their disease context-specific functional roles.Altogether, the findings presented in this thesis demonstrate that TRMC constitute a heterogeneous cell population within the synovial tissue. The dynamic changes of TRMC subsets during arthritis development highlight their functional plasticity. The lack of specific and reliable surface markers for TRMC has limited the ability to perform targeted loss-of-function experiments to assess their causal role in RA directly, therefore, future functional studies investigating the roles of TRMC in RA will be conducted at the subset level, using depletion mouse model targeting specific TRMC subpopulations or novel models based on unique TRMC gene markers identified through single-cell RNA-sequencing.
일반주제명  
Medicine
일반주제명  
Health sciences
일반주제명  
Immunology
키워드  
Rheumatoid arthritis
키워드  
Cartilage damage
키워드  
Pivotal cell types
기타저자  
Northwestern University Driskill Graduate Training Program in Life Sciences
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aWang,  Yidan.
■24510▼aCharactering  Monocyte-Lineage  Cells  in  Mouse  Synovial  Tissue  Using  Fate-Mapping  and  Single  Cell  RNA  Sequencing
■260    ▼a[Sl]▼bNorthwestern  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a190  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Fang,  Deyu.
■5021  ▼aThesis  (Ph.D.)--Northwestern  University,  2025.
■520    ▼aRheumatoid  arthritis  (RA)  is  a  chronic  autoimmune  disease  characterized  by  joint  swelling,  cartilage  damage,  pannus  formation,  and  bone  erosion.  Monocytes  and  macrophages  are  pivotal  cell  types  that  contribute  to  the  pathogenesis  of  rheumatoid  arthritis  (RA).  Despite  their  involvement  in  RA  progression,  the  precise  functions  of  monocytes  in  RA  remain  unclear.  Notably,  monocyte  depletion  in  RA-like  mouse  models  does  not  prevent  the  development  of  inflammatory  arthritis,  and  the  tools  used  to  deplete  monocytes  frequently  exhibit  off-target  effects,  primarily  on  macrophages.  In  recent  years,  we  identified  a  monocyte-lineage  population,  termed  tissue-resident  monocyte-linage  cells  (TRMC),  which  reside  in  the  extravascular  space  and  are  at  least  partially  embryonic-derived,  and  distinct  from  circulating  monocytes  and  macrophages.  However,  the  precise  ontogeny  and  heterogeneity  of  TRMC  remain  unknown.In  this  thesis,  we  first  investigated  19  lineage-tracing  and  reporter  mouse  models  across  all  myeloid  cell  populations  in  the  synovial  tissue  and  peripheral  blood.  Specifically,  we  assessed  the  fidelity  of  these  models  in  labeling  TRMC  and  synovial  macrophage  subsets,  as  well  as  their  off-target  effects.  Although  no  single  model  was  found  to  selectively  and  comprehensively  trace  TRMC  or  synovial  macrophage  subsets,  single-cell  genomic  datasets  revealed  additional  candidate  gene  markers  with  the  potential  to  improve  specificity.  Notably,  the  selectively  positive  labeling  observed  in  some  lineage  tracing  models  suggests  underlying  heterogeneity  within  the  TRMC  population.  To  further  explore  this,  we  examined  the  heterogeneity  and  ontogeny  of  TRMC.  Using  bone  marrow  chimaeras  and  parabiosis  mouse  models,  we  demonstrated  that  TRMC  originate  from  both  embryonic  and  bone  marrow-derived  sources.  Through  single-cell  transcriptomic  analysis,  we  identified  three  distinct  TRMC  subsets,  each  with  unique  functions  and  developmental  origins.  One  TRMC  subset,  MHCII+  TRMC,  is  Ccr2-dependent.  During  the  progression  of  inflammatory  arthritis  in  mice,  the  abundance  and  transcriptional  profiles  of  the  3  TRMC  subsets  alter  dynamically,  suggesting  their  disease  context-specific  functional  roles.Altogether,  the  findings  presented  in  this  thesis  demonstrate  that  TRMC  constitute  a  heterogeneous  cell  population  within  the  synovial  tissue.  The  dynamic  changes  of  TRMC  subsets  during  arthritis  development  highlight  their  functional  plasticity.  The  lack  of  specific  and  reliable  surface  markers  for  TRMC  has  limited  the  ability  to  perform  targeted  loss-of-function  experiments  to  assess  their  causal  role  in  RA  directly,  therefore,  future  functional  studies  investigating  the  roles  of  TRMC  in  RA  will  be  conducted  at  the  subset  level,  using  depletion  mouse  model  targeting  specific  TRMC  subpopulations  or  novel  models  based  on  unique  TRMC  gene  markers  identified  through  single-cell  RNA-sequencing.
■590    ▼aSchool  code:  0163.
■650  4▼aMedicine
■650  4▼aHealth  sciences
■650  4▼aImmunology
■653    ▼aRheumatoid  arthritis
■653    ▼aCartilage  damage
■653    ▼aPivotal  cell  types
■690    ▼a0564
■690    ▼a0566
■690    ▼a0982
■71020▼aNorthwestern  University▼bDriskill  Graduate  Training  Program  in  Life  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0163
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358901▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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