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Bioengineered 3D in Vitro Strategies to Investigate Phenotypic and Genotypic Differences in Lymphatic Network Sprouting
Bioengineered 3D in Vitro Strategies to Investigate Phenotypic and Genotypic Differences i...
Bioengineered 3D in Vitro Strategies to Investigate Phenotypic and Genotypic Differences in Lymphatic Network Sprouting

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105506
ISBN  
9798263325985
DDC  
612
저자명  
Gonzalez-Vargas, Yarelis.
서명/저자  
Bioengineered 3D in Vitro Strategies to Investigate Phenotypic and Genotypic Differences in Lymphatic Network Sprouting
발행사항  
[Sl] : Georgia Institute of Technology, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
207 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Dixon, J. Brandon.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2024.
초록/해제  
요약This doctoral thesis focuses on the engineering of in vitro models for studying lymphatic network sprouting. The lymphatic system is crucial for maintaining tissue fluid homeostasis, immune cell trafficking, and fat absorption. Lymphangiogenesis, the formation of new lymphatic vessels, involves complex interactions between key ligands and their receptors, such as vascular endothelial growth factor C (VEGFC) and vascular endothelial growth factor receptor 3 (VEGFR3), which regulate lymphatic endothelial cell (LEC) sprouting. Supporting cells, as well as biochemical and biomechanical cues provided by the tissue microenvironment, also play pivotal roles in this process. This dissertation showcases the development of tissue-engineered models using primary lymphatic cells to elucidate the mechanisms of lymphatic sprouting and remodeling. These models aim to overcome the limitations of in vivo studies by offering reproducible platforms for investigating lymphatic biology and testing potential therapeutic interventions.Additionally, the thesis explores a precision medicine approach for managing lymphatic malformations (LMs). Tissue samples were collected from patients undergoing routine sclerotherapy and expanded in polyethylene glycol (PEG) hydrogels to create patient-derived cells (PDCs). These PDCs were then characterized for their genetic fidelity to the original tissue biopsy using single-cell RNA sequencing and whole exome sequencing. Patient-derived organoids (PDOs), termed lymphatic malformation organoids (LMOs), were developed and assessed for their lymphatic sprouting capacity in PEG hydrogels.The final chapter examines the differential responses to PI3K/AKT/MTOR pathway inhibition in LMOs. Specifically, it investigates the regression of LMOs following treatment. The results demonstrated significant variability in drug responses among LMOs derived from three different patients, highlighting the heterogeneity of LMs. Gene expression analyses revealed that alpelisib treatment upregulated pro-apoptotic genes, providing insights into the molecular mechanisms driving sprout regression. Overall, this thesis underscores the potential of targeted therapies for managing LMs, the value of using patient-derived models for precision medicine, and the impact of in vitro models on advancing our understanding of lymphatic biology.
일반주제명  
Physiology
일반주제명  
Transplants & implants
일반주제명  
Vascular endothelial growth factor
일반주제명  
Blood vessels
일반주제명  
Mesentery
일반주제명  
Wound healing
일반주제명  
Mutation
일반주제명  
Extracellular matrix
일반주제명  
Metabolism
일반주제명  
Inflammation
일반주제명  
Apoptosis
일반주제명  
Cell cycle
일반주제명  
Patients
일반주제명  
Homeostasis
일반주제명  
Fibroblasts
일반주제명  
Collagen
일반주제명  
Biopsy
일반주제명  
Edema
일반주제명  
Phosphorylation
일반주제명  
Biomechanics
일반주제명  
Hydrogels
일반주제명  
Cellular biology
일반주제명  
Surgery
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■500    ▼aAdvisor:  Dixon,  J.  Brandon.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2024.
■520    ▼aThis  doctoral  thesis  focuses  on  the  engineering  of  in  vitro  models  for  studying  lymphatic  network  sprouting.  The  lymphatic  system  is  crucial  for  maintaining  tissue  fluid  homeostasis,  immune  cell  trafficking,  and  fat  absorption.  Lymphangiogenesis,  the  formation  of  new  lymphatic  vessels,  involves  complex  interactions  between  key  ligands  and  their  receptors,  such  as  vascular  endothelial  growth  factor  C  (VEGFC)  and  vascular  endothelial  growth  factor  receptor  3  (VEGFR3),  which  regulate  lymphatic  endothelial  cell  (LEC)  sprouting.  Supporting  cells,  as  well  as  biochemical  and  biomechanical  cues  provided  by  the  tissue  microenvironment,  also  play  pivotal  roles  in  this  process.  This  dissertation  showcases  the  development  of  tissue-engineered  models  using  primary  lymphatic  cells  to  elucidate  the  mechanisms  of  lymphatic  sprouting  and  remodeling.  These  models  aim  to  overcome  the  limitations  of  in  vivo  studies  by  offering  reproducible  platforms  for  investigating  lymphatic  biology  and  testing  potential  therapeutic  interventions.Additionally,  the  thesis  explores  a  precision  medicine  approach  for  managing  lymphatic  malformations  (LMs).  Tissue  samples  were  collected  from  patients  undergoing  routine  sclerotherapy  and  expanded  in  polyethylene  glycol  (PEG)  hydrogels  to  create  patient-derived  cells  (PDCs).  These  PDCs  were  then  characterized  for  their  genetic  fidelity  to  the  original  tissue  biopsy  using  single-cell  RNA  sequencing  and  whole  exome  sequencing.  Patient-derived  organoids  (PDOs),  termed  lymphatic  malformation  organoids  (LMOs),  were  developed  and  assessed  for  their  lymphatic  sprouting  capacity  in  PEG  hydrogels.The  final  chapter  examines  the  differential  responses  to  PI3K/AKT/MTOR  pathway  inhibition  in  LMOs.  Specifically,  it  investigates  the  regression  of  LMOs  following  treatment.  The  results  demonstrated  significant  variability  in  drug  responses  among  LMOs  derived  from  three  different  patients,  highlighting  the  heterogeneity  of  LMs.  Gene  expression  analyses  revealed  that  alpelisib  treatment  upregulated  pro-apoptotic  genes,  providing  insights  into  the  molecular  mechanisms  driving  sprout  regression.  Overall,  this  thesis  underscores  the  potential  of  targeted  therapies  for  managing  LMs,  the  value  of  using  patient-derived  models  for  precision  medicine,  and  the  impact  of  in  vitro  models  on  advancing  our  understanding  of  lymphatic  biology.
■590    ▼aSchool  code:  0078.
■650  4▼aPhysiology
■650  4▼aTransplants  &  implants
■650  4▼aVascular  endothelial  growth  factor
■650  4▼aBlood  vessels
■650  4▼aMesentery
■650  4▼aWound  healing
■650  4▼aMutation
■650  4▼aExtracellular  matrix
■650  4▼aMetabolism
■650  4▼aInflammation
■650  4▼aApoptosis
■650  4▼aCell  cycle
■650  4▼aPatients
■650  4▼aHomeostasis
■650  4▼aFibroblasts
■650  4▼aCollagen
■650  4▼aBiopsy
■650  4▼aEdema
■650  4▼aPhosphorylation
■650  4▼aBiomechanics
■650  4▼aHydrogels
■650  4▼aCellular  biology
■650  4▼aSurgery
■690    ▼a0648
■690    ▼a0719
■690    ▼a0379
■690    ▼a0576
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360324▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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