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Development of 3D Printed Adhesive Tissue Engineering Scaffold
Development of 3D Printed Adhesive Tissue Engineering Scaffold
Development of 3D Printed Adhesive Tissue Engineering Scaffold

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자료유형  
 학위논문 서양
최종처리일시  
20260202105552
ISBN  
9798265401847
DDC  
617
저자명  
Chen, Shuai.
서명/저자  
Development of 3D Printed Adhesive Tissue Engineering Scaffold
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
185 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
주기사항  
Advisor: Chen, Haifeng;Serpooshan, Vahid.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약Tissue engineering scaffolds (TESs) are temporary extracellular matriximitation that facilitate cellular adhesion, growth, proliferation, and differentiation, and provide a suitable environment for promoting tissue regeneration. On the basisofpre-designed models, 3 dimensional printing (3D printing) technology can be utilizedto create TESs with desired structures and shapes. In general, TESs need to befixedonto tissue surface through suturing or bio-glue. Traditional fixation methods havemultiple disadvantages, such as secondary damage caused by suturing, andcytotoxicity or possible inflammation caused by bio-glue. The objective of this studyis to develop 3D-printed TESs with intrinsic bio-adhesion property that canbeadhered to damaged tissues without the help of suturing or bio-glue.In order to achieve this goal, in the first version of protocol, dopamine graftedhyaluronic acid methacrylate (HAMA-dopa) and gelatin methacryloyl (GelMA) wereused as major components in bio-ink. Adhesive tissue engineering scaffolds (ATESs)were prepared by freeform reversible embedding of suspended hydrogels (FRESH)printing and air printing (directly print on the substrate) through extrusion. Thebio-adhesion strength of ATESs from the two methods was compared, and the resultsshowed that the adhesion strength of scaffolds prepared by the latter methodwasstronger. However, as the latter method is not clinically convenient andrequiresophisticated operation, a type of ATES that could have both high enough in vivo adhesion property and convenient clinical application is required.In the improved version of protocol for fabricating advanced ATESs, tyraminegrafted hyaluronic acid methacrylate (HAMA-tyr), gelatin and GelMAwere usedasmajor components in the bio-ink and FRESH printing was adopted as fabricationmethod. The resulted ATESs are off-the-shelf products that are convenient for clinical application. The ATES in the group with the highest adhesion property was adheredtothe heart surface of a mouse model with myocardial infarction, which was kept alivefor 4 weeks. The results demonstrated that the ATES had enough in vivo adhesionproperty to be kept on the tissue surface for a proper time length.In this study, stereolithography (SL) was also used to prepare ATESs. Compared with extrusion printing, SL has the advantages of high fidelity andshort production time. In this study, SL was used to fabricate ATESs with blood vesselsorporous structures to demonstrate that the method could be used to produce ATESswith sophisticated internal and external structures.The mechanical properties, swelling behavior, porosity and cytotoxicityof thematerials were tested, and the results showed that the 3D printed ATESs haveappropriate properties to be functional scaffolds. The fidelity of printing basedondifferent models was evaluated in micro and bulk perspectives, and the resultsindicated that 3D printed ATESs could be fabricated with acceptable accuracybasedon models. In addition, the in vitro adhesion properties of the ATESs under tensile, shear or dynamic stress in air or underwater were tested, and the results showedthat the modification methods being used in this study can improve the adhesionstrengthof the 3D printed ATESs.The major target of this study was to develop and fabricate shape/structural designable ATESs with high in vivo adhesion property and application convenience. For achieving the target, advanced fabrication protocol was developed basedontheexperience of the first version, and bio-ink, printing process and fabrication procedureto produce such ATESs were developed. The in vivo adhesion property of the ATESwas demonstrated in a mouse model of myocardial infarction for 4 weeks. Inorder toaccommodate for a variety of application situations, both extrusion printingandstereolithography were used to fabricate the ATESs. The analyze of the otherproperties, such as mechanical properties, swelling behavior, porosity and cytotoxicity, demonstrated that the ATESs were qualified as a functional scaffold for cell supporting and the procedures for the improvement of adhesion properties wouldnot compromise the function of the ATESs as an appropriate scaffold.
일반주제명  
Tissue engineering
일반주제명  
Software
일반주제명  
Solidification
일반주제명  
Cytotoxicity
일반주제명  
Chemical reactions
일반주제명  
Bones
일반주제명  
Immunology
일반주제명  
Adhesion
일반주제명  
Surgical outcomes
일반주제명  
Printing
일반주제명  
Adhesives
일반주제명  
Inflammation
일반주제명  
Polymers
일반주제명  
Hyaluronic acid
일반주제명  
Viscosity
일반주제명  
Surgery
일반주제명  
Heart attacks
일반주제명  
Cartilage
일반주제명  
3-D printers
일반주제명  
Design
일반주제명  
Chemical bonds
일반주제명  
Bond strength
일반주제명  
Hydrogels
일반주제명  
Biomedical engineering
일반주제명  
Cellular biology
일반주제명  
Medicine
일반주제명  
Polymer chemistry
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05A.
전자적 위치 및 접속  
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■1001  ▼aChen,  Shuai.
■24510▼aDevelopment  of  3D  Printed  Adhesive  Tissue  Engineering  Scaffold
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2023
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■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  A.
■500    ▼aAdvisor:  Chen,  Haifeng;Serpooshan,  Vahid.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aTissue  engineering  scaffolds  (TESs)  are  temporary  extracellular  matriximitation  that  facilitate  cellular  adhesion,  growth,  proliferation,  and  differentiation,  and  provide  a  suitable  environment  for  promoting  tissue  regeneration.  On  the  basisofpre-designed  models,  3  dimensional  printing  (3D  printing)  technology  can  be  utilizedto  create  TESs  with  desired  structures  and  shapes.  In  general,  TESs  need  to  befixedonto  tissue  surface  through  suturing  or  bio-glue.  Traditional  fixation  methods  havemultiple  disadvantages,  such  as  secondary  damage  caused  by  suturing,  andcytotoxicity  or  possible  inflammation  caused  by  bio-glue.  The  objective  of  this  studyis  to  develop  3D-printed  TESs  with  intrinsic  bio-adhesion  property  that  canbeadhered  to  damaged  tissues  without  the  help  of  suturing  or  bio-glue.In  order  to  achieve  this  goal,  in  the  first  version  of  protocol,  dopamine  graftedhyaluronic  acid  methacrylate  (HAMA-dopa)  and  gelatin  methacryloyl  (GelMA)  wereused  as  major  components  in  bio-ink.  Adhesive  tissue  engineering  scaffolds  (ATESs)were  prepared  by  freeform  reversible  embedding  of  suspended  hydrogels  (FRESH)printing  and  air  printing  (directly  print  on  the  substrate)  through  extrusion.  Thebio-adhesion  strength  of  ATESs  from  the  two  methods  was  compared,  and  the  resultsshowed  that  the  adhesion  strength  of  scaffolds  prepared  by  the  latter  methodwasstronger.  However,  as  the  latter  method  is  not  clinically  convenient  andrequiresophisticated  operation,  a  type  of  ATES  that  could  have  both  high  enough  in  vivo  adhesion  property  and  convenient  clinical  application  is  required.In  the  improved  version  of  protocol  for  fabricating  advanced  ATESs,  tyraminegrafted  hyaluronic  acid  methacrylate  (HAMA-tyr),  gelatin  and  GelMAwere  usedasmajor  components  in  the  bio-ink  and  FRESH  printing  was  adopted  as  fabricationmethod.  The  resulted  ATESs  are  off-the-shelf  products  that  are  convenient  for  clinical  application.  The  ATES  in  the  group  with  the  highest  adhesion  property  was  adheredtothe  heart  surface  of  a  mouse  model  with  myocardial  infarction,  which  was  kept  alivefor  4  weeks.  The  results  demonstrated  that  the  ATES  had  enough  in  vivo  adhesionproperty  to  be  kept  on  the  tissue  surface  for  a  proper  time  length.In  this  study,  stereolithography  (SL)  was  also  used  to  prepare  ATESs.  Compared  with  extrusion  printing,  SL  has  the  advantages  of  high  fidelity  andshort  production  time.  In  this  study,  SL  was  used  to  fabricate  ATESs  with  blood  vesselsorporous  structures  to  demonstrate  that  the  method  could  be  used  to  produce  ATESswith  sophisticated  internal  and  external  structures.The  mechanical  properties,  swelling  behavior,  porosity  and  cytotoxicityof  thematerials  were  tested,  and  the  results  showed  that  the  3D  printed  ATESs  haveappropriate  properties  to  be  functional  scaffolds.  The  fidelity  of  printing  basedondifferent  models  was  evaluated  in  micro  and  bulk  perspectives,  and  the  resultsindicated  that  3D  printed  ATESs  could  be  fabricated  with  acceptable  accuracybasedon  models.  In  addition,  the  in  vitro  adhesion  properties  of  the  ATESs  under  tensile,  shear  or  dynamic  stress  in  air  or  underwater  were  tested,  and  the  results  showedthat  the  modification  methods  being  used  in  this  study  can  improve  the  adhesionstrengthof  the  3D  printed  ATESs.The  major  target  of  this  study  was  to  develop  and  fabricate  shape/structural  designable  ATESs  with  high  in  vivo  adhesion  property  and  application  convenience.  For  achieving  the  target,  advanced  fabrication  protocol  was  developed  basedontheexperience  of  the  first  version,  and  bio-ink,  printing  process  and  fabrication  procedureto  produce  such  ATESs  were  developed.  The  in  vivo  adhesion  property  of  the  ATESwas  demonstrated  in  a  mouse  model  of  myocardial  infarction  for  4  weeks.  Inorder  toaccommodate  for  a  variety  of  application  situations,  both  extrusion  printingandstereolithography  were  used  to  fabricate  the  ATESs.  The  analyze  of  the  otherproperties,  such  as  mechanical  properties,  swelling  behavior,  porosity  and  cytotoxicity,  demonstrated  that  the  ATESs  were  qualified  as  a  functional  scaffold  for  cell  supporting  and  the  procedures  for  the  improvement  of  adhesion  properties  wouldnot  compromise  the  function  of  the  ATESs  as  an  appropriate  scaffold.
■590    ▼aSchool  code:  0078.
■650  4▼aTissue  engineering
■650  4▼aSoftware
■650  4▼aSolidification
■650  4▼aCytotoxicity
■650  4▼aChemical  reactions
■650  4▼aBones
■650  4▼aImmunology
■650  4▼aAdhesion
■650  4▼aSurgical  outcomes
■650  4▼aPrinting
■650  4▼aAdhesives
■650  4▼aInflammation
■650  4▼aPolymers
■650  4▼aHyaluronic  acid
■650  4▼aViscosity
■650  4▼aSurgery
■650  4▼aHeart  attacks
■650  4▼aCartilage
■650  4▼a3-D  printers
■650  4▼aDesign
■650  4▼aChemical  bonds
■650  4▼aBond  strength
■650  4▼aHydrogels
■650  4▼aBiomedical  engineering
■650  4▼aCellular  biology
■650  4▼aMedicine
■650  4▼aPolymer  chemistry
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■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05A.
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■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360595▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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