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Engineering an Injectable Hydrogel for Sustained Vaccine Delivery to Improve Humoral Immune Responses
Engineering an Injectable Hydrogel for Sustained Vaccine Delivery to Improve Humoral Immun...
Engineering an Injectable Hydrogel for Sustained Vaccine Delivery to Improve Humoral Immune Responses

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자료유형  
 학위논문 서양
최종처리일시  
20250211153051
ISBN  
9798346389729
DDC  
600
저자명  
Saouaf, Olivia Michelle.
서명/저자  
Engineering an Injectable Hydrogel for Sustained Vaccine Delivery to Improve Humoral Immune Responses
발행사항  
[Sl] : Stanford University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
214 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-05, Section: A.
주기사항  
Advisor: Appel, Eric.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2024.
초록/해제  
요약As pharmaceutical makers increasingly look to control the release kinetics of their products, physically crosslinked hydrogels are emerging as a promising drug carrier due to their injectability and depot-forming abilities. In this thesis, we examine the physical properties of Polymer-Nanoparticle (PNP) hydrogels, materials that are shear-thinning, rapidly self-assembling, and biocompatible, and which have been shown to be effective in many therapeutic and prophylactic applications. Herein, we investigate the microscale structure of the PNP hydrogel, its mechanical properties, and the diffusivity of components within its network. Informed by these findings, we have engineered the PNP platform to deliver physicochemically distinct cargos of adjuvanted influenza vaccines, resulting in greatly improved humoral responses. Our tuning of PNP hydrogel formulation and physical properties has allowed us to utilize the benefits of extended release to add potency and breadth to our current vaccination technologies with an easily injectable platform.We first describe the use of sustained delivery technologies to improve immune responses. We detail how modulating the immune system via strategies such as vaccines and cancer treatments has allowed humankind to fight against infection and disease but show the great need for improvements to address diseases outside the reach of our current technology. We describe how exposing the immune system to immunomodulatory signals for weeks rather than hours can provoke stronger and more effective cellular responses and depict the biomaterial technologies that have been v developed over recent years to leverage this finding. Subsequently, we probe the physical properties of the PNP hydrogel and investigate how its structure enables the retention and sustained release of physicochemically distinct cargos.We next show the ability of the PNP hydrogel to enhance humoral immune response to subunit single-antigen influenza vaccines. We use our drug delivery platform to administer influenza hemagglutinin protein antigens alongside an immune stimulatory small molecule adjuvant and find a marked improvement in antibody titer over liquidadministered controls. We further display the importance of co-delivery of antigen and adjuvant in the improvement of the nanoparticle-tethered small molecule adjuvant over its soluble counterpart. We then investigate the effect of hydrogel formulation and mechanical properties on vaccine efficacy. While we find that all PNP formulations perform significantly better than a standard liquid control, we also see that the stronger, less diffusive formulations outperform our weakest and most quickly dissipating hydrogel, signifying that prolonged exposure time of vaccine components to the immune system has further benefits as time increases, within a demonstrable threshold.In the final chapter of this thesis, we expand the use of the PNP hydrogel to advance multivalent influenza vaccines, improving on current clinical flu vaccine formulations which incorporate three or four distinct strains. We note that the current efficacy of our annual multivalent influenza vaccines is often very low, leaving populations unprotected against some of the strains included in the vaccine as well as future strains of the rapidly mutating virus. Administration of both trivalent subunit and quadrivalent clinical subunit Fluzone vaccines in the adjuvanted PNP hydrogel results in complete seroconversion against all included strains as well as increased protection against heterologous, never-before-encountered influenza viruses.
일반주제명  
Infections
일반주제명  
Polymers
일반주제명  
Cells
일반주제명  
Pathogens
일반주제명  
Human immunodeficiency virus--HIV
일반주제명  
Immunity (Disease)
일반주제명  
Antibodies
일반주제명  
Immunotherapy
일반주제명  
Adjuvants
일반주제명  
Rheology
일반주제명  
Nanoparticles
일반주제명  
Cytotoxicity
일반주제명  
Lymphatic system
일반주제명  
Immune system
일반주제명  
Lymphocytes
일반주제명  
Influenza
일반주제명  
Aluminum
일반주제명  
Smallpox
일반주제명  
Biomedical materials
일반주제명  
Antigens
일반주제명  
Hydrogels
일반주제명  
Cancer vaccines
일반주제명  
Biomedical engineering
일반주제명  
Cellular biology
일반주제명  
Immunology
일반주제명  
Materials science
일반주제명  
Morphology
일반주제명  
Nanotechnology
일반주제명  
Polymer chemistry
일반주제명  
Therapy
일반주제명  
Physics
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 86-05A.
전자적 위치 및 접속  
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MARC

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■1001  ▼aSaouaf,  Olivia  Michelle.
■24510▼aEngineering  an  Injectable  Hydrogel  for  Sustained  Vaccine  Delivery  to  Improve  Humoral  Immune  Responses
■260    ▼a[Sl]▼bStanford  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a214  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-05,  Section:  A.
■500    ▼aAdvisor:  Appel,  Eric.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2024.
■520    ▼aAs  pharmaceutical  makers  increasingly  look  to  control  the  release  kinetics  of  their  products,  physically  crosslinked  hydrogels  are  emerging  as  a  promising  drug  carrier  due  to  their  injectability  and  depot-forming  abilities.  In  this  thesis,  we  examine  the  physical  properties  of  Polymer-Nanoparticle  (PNP)  hydrogels,  materials  that  are  shear-thinning,  rapidly  self-assembling,  and  biocompatible,  and  which  have  been  shown  to  be  effective  in  many  therapeutic  and  prophylactic  applications.  Herein,  we  investigate  the  microscale  structure  of  the  PNP  hydrogel,  its  mechanical  properties,  and  the  diffusivity  of  components  within  its  network.  Informed  by  these  findings,  we  have  engineered  the  PNP  platform  to  deliver  physicochemically  distinct  cargos  of  adjuvanted  influenza  vaccines,  resulting  in  greatly  improved  humoral  responses.  Our  tuning  of  PNP  hydrogel  formulation  and  physical  properties  has  allowed  us  to  utilize  the  benefits  of  extended  release  to  add  potency  and  breadth  to  our  current  vaccination  technologies  with  an  easily  injectable  platform.We  first  describe  the  use  of  sustained  delivery  technologies  to  improve  immune  responses.  We  detail  how  modulating  the  immune  system  via  strategies  such  as  vaccines  and  cancer  treatments  has  allowed  humankind  to  fight  against  infection  and  disease  but  show  the  great  need  for  improvements  to  address  diseases  outside  the  reach  of  our  current  technology.  We  describe  how  exposing  the  immune  system  to  immunomodulatory  signals  for  weeks  rather  than  hours  can  provoke  stronger  and  more  effective  cellular  responses  and  depict  the  biomaterial  technologies  that  have  been  v  developed  over  recent  years  to  leverage  this  finding.  Subsequently,  we  probe  the  physical  properties  of  the  PNP  hydrogel  and  investigate  how  its  structure  enables  the  retention  and  sustained  release  of  physicochemically  distinct  cargos.We  next  show  the  ability  of  the  PNP  hydrogel  to  enhance  humoral  immune  response  to  subunit  single-antigen  influenza  vaccines.  We  use  our  drug  delivery  platform  to  administer  influenza  hemagglutinin  protein  antigens  alongside  an  immune  stimulatory  small  molecule  adjuvant  and  find  a  marked  improvement  in  antibody  titer  over  liquidadministered  controls.  We  further  display  the  importance  of  co-delivery  of  antigen  and  adjuvant  in  the  improvement  of  the  nanoparticle-tethered  small  molecule  adjuvant  over  its  soluble  counterpart.  We  then  investigate  the  effect  of  hydrogel  formulation  and  mechanical  properties  on  vaccine  efficacy.  While  we  find  that  all  PNP  formulations  perform  significantly  better  than  a  standard  liquid  control,  we  also  see  that  the  stronger,  less  diffusive  formulations  outperform  our  weakest  and  most  quickly  dissipating  hydrogel,  signifying  that  prolonged  exposure  time  of  vaccine  components  to  the  immune  system  has  further  benefits  as  time  increases,  within  a  demonstrable  threshold.In  the  final  chapter  of  this  thesis,  we  expand  the  use  of  the  PNP  hydrogel  to  advance  multivalent  influenza  vaccines,  improving  on  current  clinical  flu  vaccine  formulations  which  incorporate  three  or  four  distinct  strains.  We  note  that  the  current  efficacy  of  our  annual  multivalent  influenza  vaccines  is  often  very  low,  leaving  populations  unprotected  against  some  of  the  strains  included  in  the  vaccine  as  well  as  future  strains  of  the  rapidly  mutating  virus.  Administration  of  both  trivalent  subunit  and  quadrivalent  clinical  subunit  Fluzone  vaccines  in  the  adjuvanted  PNP  hydrogel  results  in  complete  seroconversion  against  all  included  strains  as  well  as  increased  protection  against  heterologous,  never-before-encountered  influenza  viruses.
■590    ▼aSchool  code:  0212.
■650  4▼aInfections
■650  4▼aPolymers
■650  4▼aCells
■650  4▼aPathogens
■650  4▼aHuman  immunodeficiency  virus--HIV
■650  4▼aImmunity  (Disease)
■650  4▼aAntibodies
■650  4▼aImmunotherapy
■650  4▼aAdjuvants
■650  4▼aRheology
■650  4▼aNanoparticles
■650  4▼aCytotoxicity
■650  4▼aLymphatic  system
■650  4▼aImmune  system
■650  4▼aLymphocytes
■650  4▼aInfluenza
■650  4▼aAluminum
■650  4▼aSmallpox
■650  4▼aBiomedical  materials
■650  4▼aAntigens
■650  4▼aHydrogels
■650  4▼aCancer  vaccines
■650  4▼aBiomedical  engineering
■650  4▼aCellular  biology
■650  4▼aImmunology
■650  4▼aMaterials  science
■650  4▼aMorphology
■650  4▼aNanotechnology
■650  4▼aPolymer  chemistry
■650  4▼aTherapy
■650  4▼aPhysics
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■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g86-05A.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164818▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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