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Development of Protein-Based Therapeutics and Vaccines
Development of Protein-Based Therapeutics and Vaccines
Development of Protein-Based Therapeutics and Vaccines

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105554
ISBN  
9798265401380
DDC  
600
저자명  
Pendyala, Geetanjali.
서명/저자  
Development of Protein-Based Therapeutics and Vaccines
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
165 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Kane, Ravi.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약Engineered proteins play an important role in the development of therapeutics and subunit vaccines. The objective of this thesis is to design and develop protein-based vaccines and therapeutics using techniques such as site-specific modification, click chemistry, bioconjugation, and the multivalent display of antigens on virus-like particles (VLPs). In Chapter 2, we developed a VLP-based vaccine for malaria by presenting multiple copies of a chimeric circumsporozoite protein (CSP) antigen on SpyCatcher-mi3 nanoparticles. CSP is a surface protein expressed during the sporozoite stage in the life cycle of Plasmodium falciparum (Pf) malaria that causes considerable mortality worldwide. The chimeric PfCSP (c PfCSP) antigen incorporates the important "T1/junctional" epitope that is the target of potent neutralizing antibodies. Our vaccine candidate demonstrated high and durable IgG antibody levels and a balanced antibody response against the T1/junctional region as well as the (NANP)n repeats in mice. Moreover, the antibody concentration elicited by immunization was significantly greater than the reported protective threshold defined in a murine challenge model. In Chapter 3, we designed Staphylococcus aureus vaccines with cross-reactivity against multiple toxins that S. aureus generates to evade the host immune system. Three cytotoxin components (LukD, LukF, HlgB) share ~80% amino acid sequence identity. Though αHemolysin (Hla) cytotoxin is largely different from LukD, LukF and HlgB (~25% shared amino acid sequence identity), they contain a common conformational epitope that binds to neutralizing antibodies. Leveraging this similarity, we displayed multiple copies of LukD or Hla on SpyCatcher-mi3 nanoparticles and compared the breadth of the antibody response elicited by different vaccination schemes. In Chapter 4, we presented a strategy to incorporate non-canonical amino acids into lysostaphin, an enzyme targeting the cell wall of Staphylococcus aureus, while retaining its stapholytic activity. We used this approach to successfully generate active variants of lysostaphin that incorporate paraazidophenylalanine. Addition of this "reactive handle" facilitated the orthogonal sitespecific modification of lysostaphin variants with polyethylene glycol (PEG) using copper-free click cycloaddition. Our results showed that PEGylated lysostaphin variants could retain their stapholytic activity. However, the extent of retention depended on the location of the modification site and the molecular weight of PEG. In Chapter 5, we designed VLP-based coronavirus vaccines. Multiple copies of the Receptor binding domain (RBD), Spike (S) protein and S2 domain of SARS-CoV-2 were conjugated to SpyCatcher-mi3, and mice were immunized with the constructs intranasally. Systemic immune response was characterized, and the mice were challenged against SARS-CoV-2 to evaluate protection.
일반주제명  
Pathogens
일반주제명  
mRNA vaccines
일반주제명  
Mutation
일반주제명  
Bacteria
일반주제명  
Staphylococcus infections
일반주제명  
Amino acids
일반주제명  
Genomes
일반주제명  
Chromatography
일반주제명  
Human papillomavirus
일반주제명  
COVID-19
일반주제명  
Malaria
일반주제명  
Sodium
일반주제명  
Antibiotics
일반주제명  
Cloning
일반주제명  
Immune system
일반주제명  
Genetic engineering
일반주제명  
Design
일반주제명  
Antigens
일반주제명  
Vectors (Biology)
일반주제명  
Toxins
일반주제명  
Genetics
일반주제명  
Immunology
일반주제명  
Parasitology
일반주제명  
Pathology
일반주제명  
Pharmaceutical sciences
일반주제명  
Virology
일반주제명  
Biology
일반주제명  
Engineering
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:  Kane,  Ravi.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aEngineered  proteins  play  an  important  role  in  the  development  of  therapeutics  and  subunit  vaccines.  The  objective  of  this  thesis  is  to  design  and  develop  protein-based  vaccines  and  therapeutics  using  techniques  such  as  site-specific  modification,  click  chemistry,  bioconjugation,  and  the  multivalent  display  of  antigens  on  virus-like  particles  (VLPs).  In  Chapter  2,  we  developed  a  VLP-based  vaccine  for  malaria  by  presenting  multiple  copies  of  a  chimeric  circumsporozoite  protein  (CSP)  antigen  on  SpyCatcher-mi3  nanoparticles.  CSP  is  a  surface  protein  expressed  during  the  sporozoite  stage  in  the  life  cycle  of  Plasmodium  falciparum  (Pf)  malaria  that  causes  considerable  mortality  worldwide.  The  chimeric  PfCSP  (c  PfCSP)  antigen  incorporates  the  important  "T1/junctional"  epitope  that  is  the  target  of  potent  neutralizing  antibodies.  Our  vaccine  candidate  demonstrated  high  and  durable  IgG  antibody  levels  and  a  balanced  antibody  response  against  the  T1/junctional  region  as  well  as  the  (NANP)n  repeats  in  mice.  Moreover,  the  antibody  concentration  elicited  by  immunization  was  significantly  greater  than  the  reported  protective  threshold  defined  in  a  murine  challenge  model.  In  Chapter  3,  we  designed  Staphylococcus  aureus  vaccines  with  cross-reactivity  against  multiple  toxins  that  S.  aureus  generates  to  evade  the  host  immune  system.  Three  cytotoxin  components  (LukD,  LukF,  HlgB)  share  ~80%  amino  acid  sequence  identity.  Though  αHemolysin  (Hla)  cytotoxin  is  largely  different  from  LukD,  LukF  and  HlgB  (~25%  shared  amino  acid  sequence  identity),  they  contain  a  common  conformational  epitope  that  binds  to  neutralizing  antibodies.  Leveraging  this  similarity,  we  displayed  multiple  copies  of  LukD  or  Hla  on  SpyCatcher-mi3  nanoparticles  and  compared  the  breadth  of  the  antibody  response  elicited  by  different  vaccination  schemes.  In  Chapter  4,  we  presented  a  strategy  to  incorporate  non-canonical  amino  acids  into  lysostaphin,  an  enzyme  targeting  the  cell  wall  of  Staphylococcus  aureus,  while  retaining  its  stapholytic  activity.  We  used  this  approach  to  successfully  generate  active  variants  of  lysostaphin  that  incorporate  paraazidophenylalanine.  Addition  of  this  "reactive  handle"  facilitated  the  orthogonal  sitespecific  modification  of  lysostaphin  variants  with  polyethylene  glycol  (PEG)  using  copper-free  click  cycloaddition.  Our  results  showed  that  PEGylated  lysostaphin  variants  could  retain  their  stapholytic  activity.  However,  the  extent  of  retention  depended  on  the  location  of  the  modification  site  and  the  molecular  weight  of  PEG.  In  Chapter  5,  we  designed  VLP-based  coronavirus  vaccines.  Multiple  copies  of  the  Receptor  binding  domain  (RBD),  Spike  (S)  protein  and  S2  domain  of  SARS-CoV-2  were  conjugated  to  SpyCatcher-mi3,  and  mice  were  immunized  with  the  constructs  intranasally.  Systemic  immune  response  was  characterized,  and  the  mice  were  challenged  against  SARS-CoV-2  to  evaluate  protection.
■590    ▼aSchool  code:  0078.
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■650  4▼amRNA  vaccines
■650  4▼aMutation
■650  4▼aBacteria
■650  4▼aStaphylococcus  infections
■650  4▼aAmino  acids
■650  4▼aGenomes
■650  4▼aChromatography
■650  4▼aHuman  papillomavirus
■650  4▼aCOVID-19
■650  4▼aMalaria
■650  4▼aSodium
■650  4▼aAntibiotics
■650  4▼aCloning
■650  4▼aImmune  system
■650  4▼aGenetic  engineering
■650  4▼aDesign
■650  4▼aAntigens
■650  4▼aVectors  (Biology)
■650  4▼aToxins
■650  4▼aGenetics
■650  4▼aImmunology
■650  4▼aParasitology
■650  4▼aPathology
■650  4▼aPharmaceutical  sciences
■650  4▼aVirology
■650  4▼aBiology
■650  4▼aEngineering
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■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360601▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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