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Generation of Novel Mouse Models for the Investigation of Diabetes Therapeutics
Generation of Novel Mouse Models for the Investigation of Diabetes Therapeutics
Generation of Novel Mouse Models for the Investigation of Diabetes Therapeutics

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103046
ISBN  
9798280760295
DDC  
615
저자명  
Waite, Eric.
서명/저자  
Generation of Novel Mouse Models for the Investigation of Diabetes Therapeutics
발행사항  
[Sl] : University of Pennsylvania, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
134 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Kaestner, Klaus H.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2025.
초록/해제  
요약Diabetes is a growing global health concern and an enormous burden on healthcare systems. There are several types of diabetes, but all converge on dysregulated blood glucose and chronic hyperglycemia, that if left unmanaged, can result in permanent disability and death. Central to blood glucose regulation is the pancreatic Islet of Langerhans (islet) and specifically the β-cell and its secretion of insulin in response to elevated blood glucose. While there is no cure for diabetes, there are several useful therapeutics strategies, including enhancing β-cell insulin secretion, improving insulin sensitivity, enhancing glucose excretion, or islet cell replacement to help patients manage their chronic hyperglycemia and minimize complications. Currently available anti-diabetic medications do not work for all patients and cutting-edge β-cell replacement therapy is not available to the vast majority. Here I describe two new mouse models that can be employed to discover and evaluate novel therapies for diabetes, namely stem-cell derived cell replacement therapy and senolytics. In chapter 2 I describe the IsletTester mouse, a novel immunodeficient, moderately hyperglycemic mouse model for the study of primary and stem-cell derived islets. IsletTester mice are heterozygous for a nonsense mutation in glucokinase, the β-cell glucose sensor, resulting in stable, moderate hyperglycemia and glucose intolerance resulting from blunted glucose-stimulated insulin secretion. I demonstrated the suitability of this mouse model for the engraftment and study of both human primary islets and stem-cell derived islets. In chapter 3, I describe the derivation and characterization of a cell-type specific senescence cell ablation (senolytic) mouse model, the SenKiller mouse. This mouse employs a fragment of the p16Ink4a promoter, a key senescence mediator and marker gene, to drive the expression of a diphtheria toxin-green fluorescent protein fusion after activation by Cre-mediated recombination. This mouse was derived by site-specific integration into the Col1a1 safe-harbor locus, and its efficacy was demonstrated in a chemically induced model of liver fibrosis. Together, these new mouse models will help to advance the therapeutic development of both stem-cell derived islet products and senolytics for the treatment of diabetes.
일반주제명  
Pharmacology
일반주제명  
Genetics
일반주제명  
Physiology
일반주제명  
Public health
일반주제명  
Cellular biology
키워드  
Cellular therapy
키워드  
Diabetes
키워드  
Mouse models
키워드  
Senescence
키워드  
Glucose excretion
기타저자  
University of Pennsylvania Pharmacology
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aWaite,  Eric.
■24510▼aGeneration  of  Novel  Mouse  Models  for  the  Investigation  of  Diabetes  Therapeutics
■260    ▼a[Sl]▼bUniversity  of  Pennsylvania▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a134  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Kaestner,  Klaus  H.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2025.
■520    ▼aDiabetes  is  a  growing  global  health  concern  and  an  enormous  burden  on  healthcare  systems.  There  are  several  types  of  diabetes,  but  all  converge  on  dysregulated  blood  glucose  and  chronic  hyperglycemia,  that  if  left  unmanaged,  can  result  in  permanent  disability  and  death.  Central  to  blood  glucose  regulation  is  the  pancreatic  Islet  of  Langerhans  (islet)  and  specifically  the  β-cell  and  its  secretion  of  insulin  in  response  to  elevated  blood  glucose.  While  there  is  no  cure  for  diabetes,  there  are  several  useful  therapeutics  strategies,  including  enhancing  β-cell  insulin  secretion,  improving  insulin  sensitivity,  enhancing  glucose  excretion,  or  islet  cell  replacement  to  help  patients  manage  their  chronic  hyperglycemia  and  minimize  complications.  Currently  available  anti-diabetic  medications  do  not  work  for  all  patients  and  cutting-edge  β-cell  replacement  therapy  is  not  available  to  the  vast  majority.  Here  I  describe  two  new  mouse  models  that  can  be  employed  to  discover  and  evaluate  novel  therapies  for  diabetes,  namely  stem-cell  derived  cell  replacement  therapy  and  senolytics.  In  chapter  2  I  describe  the  IsletTester  mouse,  a  novel  immunodeficient,  moderately  hyperglycemic  mouse  model  for  the  study  of  primary  and  stem-cell  derived  islets.  IsletTester  mice  are  heterozygous  for  a  nonsense  mutation  in  glucokinase,  the  β-cell  glucose  sensor,  resulting  in  stable,  moderate  hyperglycemia  and  glucose  intolerance  resulting  from  blunted  glucose-stimulated  insulin  secretion.  I  demonstrated  the  suitability  of  this  mouse  model  for  the  engraftment  and  study  of  both  human  primary  islets  and  stem-cell  derived  islets.  In  chapter  3,  I  describe  the  derivation  and  characterization  of  a  cell-type  specific  senescence  cell  ablation  (senolytic)  mouse  model,  the  SenKiller  mouse.  This mouse  employs  a  fragment  of  the  p16Ink4a  promoter,  a  key  senescence  mediator  and  marker  gene,  to  drive  the  expression  of  a  diphtheria  toxin-green  fluorescent  protein  fusion  after  activation  by  Cre-mediated  recombination.  This  mouse  was  derived  by  site-specific  integration  into  the  Col1a1  safe-harbor  locus,  and  its  efficacy  was  demonstrated  in  a  chemically  induced  model  of  liver  fibrosis.  Together,  these  new  mouse  models  will  help  to  advance  the  therapeutic  development  of  both  stem-cell  derived  islet  products  and  senolytics  for  the  treatment  of  diabetes. 
■590    ▼aSchool  code:  0175.
■650  4▼aPharmacology
■650  4▼aGenetics
■650  4▼aPhysiology
■650  4▼aPublic  health
■650  4▼aCellular  biology
■653    ▼aCellular  therapy
■653    ▼aDiabetes
■653    ▼aMouse  models
■653    ▼aSenescence
■653    ▼aGlucose  excretion
■690    ▼a0419
■690    ▼a0369
■690    ▼a0719
■690    ▼a0379
■690    ▼a0573
■71020▼aUniversity  of  Pennsylvania▼bPharmacology.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356839▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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