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Inflammation-Mediated Lymphatic Coagulation: A New Role for Neutrophil Extracellular Traps
Inflammation-Mediated Lymphatic Coagulation: A New Role for Neutrophil Extracellular Traps
Inflammation-Mediated Lymphatic Coagulation: A New Role for Neutrophil Extracellular Traps

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211151343
ISBN  
9798382783024
DDC  
610
저자명  
MacDonald, Margo Elizabeth.
서명/저자  
Inflammation-Mediated Lymphatic Coagulation: A New Role for Neutrophil Extracellular Traps
발행사항  
[Sl] : The University of Chicago, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
126 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
주기사항  
Advisor: Swartz, Melody;Gardel, Margaret.
학위논문주기  
Thesis (Ph.D.)--The University of Chicago, 2024.
초록/해제  
요약This work explores how endothelial cells respond to and regulate immune responses, specifically focusing on lymphatic endothelial cells and how their interactions with neutrophils can promote intralymphatic coagulation. In this work, I introduce lymphatic coagulation in the lungs and lung-draining lymph nodes as a clinical manifestation of COVID-19 and identify a correlation between lymphatic coagulation and the presence of neutrophils extracellular traps (NETs) within lymphatic vessels. Both intralymphatic NETosis and lymphatic coagulation also correlate with dysregulated germinal centers in these patients, and in a separate cohort of hospitalized COVID-19 patients, serum NET levels inversely correlated with antiviral antibody titers, suggesting that lymphatic clotting may impair the formation or maintenance of germinal centers necessary for robust antiviral antibody responses. Additionally, in mice degrading NETs with DNase 1 prevented TNFα-induced coagulation in lymphatic vessels, indicating that the correlation observed in COVID-19 decedents was indicative of a mechanistic role. After establishing that NETs do induce clotting in lymphatic vessels, I next investigated the role that lymphatic endothelial cells themselves may play in regulating both lymphatic coagulation and NETosis and compared this to that of blood endothelial cells. Using platelet-free plasma as a model of lymph, I observed that lymphatic endothelial cells exhibited a higher clotting threshold compared to blood endothelial cells, which is at least partially regulated by higher secretion of tissue plasminogen activator, and that this threshold is reduced by TNFα pre-treatment. TNFα also stimulated lymphatic endothelial cells to promote neutrophil recruitment and NETosis, which are regulated by CXCL8 and CCR7 in this context. These findings provide mechanistic insights into lymphatic clotting, offering potential avenues for therapeutic interventions in associated conditions. Lastly, this work investigates the role of a mechanosensitive LIM-domain protein, FHL2, in regulating endothelial cell inflammatory response.
일반주제명  
Bioengineering
일반주제명  
Immunology
일반주제명  
Biomechanics
키워드  
Coagulation
키워드  
COVID-19 patients
키워드  
Inflammation
키워드  
Lymphatics
키워드  
Neutrophils extracellular traps
기타저자  
The University of Chicago Biophysical Sciences
기본자료저록  
Dissertations Abstracts International. 85-12B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)AAI31242388
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a610
■1001  ▼aMacDonald,  Margo  Elizabeth.▼0(orcid)0000-0002-2279-9971
■24510▼aInflammation-Mediated  Lymphatic  Coagulation:  A  New  Role  for  Neutrophil  Extracellular  Traps
■260    ▼a[Sl]▼bThe  University  of  Chicago▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a126  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-12,  Section:  B.
■500    ▼aAdvisor:  Swartz,  Melody;Gardel,  Margaret.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Chicago,  2024.
■520    ▼aThis  work  explores  how  endothelial  cells  respond  to  and  regulate  immune  responses,  specifically  focusing  on  lymphatic  endothelial  cells  and  how  their  interactions  with  neutrophils  can  promote  intralymphatic  coagulation.  In  this  work,  I  introduce  lymphatic  coagulation  in  the  lungs  and  lung-draining  lymph  nodes  as  a  clinical  manifestation  of  COVID-19  and  identify  a  correlation  between  lymphatic  coagulation  and  the  presence  of  neutrophils  extracellular  traps  (NETs)  within  lymphatic  vessels.  Both  intralymphatic  NETosis  and  lymphatic  coagulation  also  correlate  with  dysregulated  germinal  centers  in  these  patients,  and  in  a  separate  cohort  of  hospitalized  COVID-19  patients,  serum  NET  levels  inversely  correlated  with  antiviral  antibody  titers,  suggesting  that  lymphatic  clotting  may  impair  the  formation  or  maintenance  of  germinal  centers  necessary  for  robust  antiviral  antibody  responses.  Additionally,  in  mice  degrading  NETs  with  DNase  1  prevented  TNFα-induced  coagulation  in  lymphatic  vessels,  indicating  that  the  correlation  observed  in  COVID-19  decedents  was  indicative  of  a  mechanistic  role.  After  establishing  that  NETs  do  induce  clotting  in  lymphatic  vessels,  I  next  investigated  the  role  that  lymphatic  endothelial  cells  themselves  may  play  in  regulating  both  lymphatic  coagulation  and  NETosis  and  compared  this  to  that  of  blood  endothelial  cells.  Using  platelet-free  plasma  as  a  model  of  lymph,  I  observed  that  lymphatic  endothelial  cells  exhibited  a  higher  clotting  threshold  compared  to  blood  endothelial  cells,  which  is  at  least  partially  regulated  by  higher  secretion  of  tissue  plasminogen  activator,  and  that  this  threshold  is  reduced  by  TNFα  pre-treatment.  TNFα  also  stimulated  lymphatic  endothelial  cells  to  promote  neutrophil  recruitment  and  NETosis,  which  are  regulated  by  CXCL8  and  CCR7  in  this  context.  These  findings  provide  mechanistic  insights  into  lymphatic  clotting,  offering  potential  avenues  for  therapeutic  interventions  in  associated  conditions.  Lastly,  this  work  investigates  the  role  of  a  mechanosensitive  LIM-domain  protein,  FHL2,  in  regulating  endothelial  cell  inflammatory  response.
■590    ▼aSchool  code:  0330.
■650  4▼aBioengineering
■650  4▼aImmunology
■650  4▼aBiomechanics
■653    ▼aCoagulation
■653    ▼aCOVID-19  patients
■653    ▼aInflammation
■653    ▼aLymphatics
■653    ▼aNeutrophils  extracellular  traps
■690    ▼a0202
■690    ▼a0982
■690    ▼a0648
■71020▼aThe  University  of  Chicago▼bBiophysical  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g85-12B.
■790    ▼a0330
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161346▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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