본문

서브메뉴

Transcription Factor 19: Regulating β-Cell Proliferation Through Modulating the DNA Damage Response Pathway- [electronic resource]
Transcription Factor 19: Regulating β-Cell Proliferation Through Modulating the DNA Damage Response Pathway- [electronic resource]

상세정보

자료유형  
 학위논문
Control Number  
0016933486
International Standard Book Number  
9798379728373
Dewey Decimal Classification Number  
612
Main Entry-Personal Name  
Blumer, Joseph T.
Publication, Distribution, etc. (Imprint  
[S.l.] : The University of Wisconsin - Madison., 2023
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2023
Physical Description  
1 online resource(111 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
General Note  
Advisor: Davis, Dawn B.
Dissertation Note  
Thesis (Ph.D.)--The University of Wisconsin - Madison, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약Decreased functional β-cell mass is a driver of diabetes, which affects millions of people annually. Genome-wide association studies identified transcription factor 19 (Tcf19) as a potential causal gene for both type 1 and type 2 diabetes. Tcf19 is expressed in humans and rodents and is most highly in the pancreatic islet and upregulated in mouse models of non-diabetic obesity. TCF19 has known roles in β-cell proliferation and survival and regulates transcriptional networks in the DNA damage response (DDR) and inflammatory pathways. We generated a germline whole-body Tcf19 knockout (wbTcf19KO) mouse model to study Tcf19 in vivo. Lean wbTcf19KO mice weigh more than WT animals, but maintain euglycemia. However, loss of Tcf19 leads to hyperglycemia in response to chronic metabolic stress. Islets from wbTcf19KO are significantly smaller than WT and have an impaired proliferative response to short-term metabolic stress. Additionally, lean, but not high-fat diet fed wbTcf19KO mouse islets have increased DNA damage. Ultimately, our data provide evidence for Tc19 regulating β-cell proliferation through modulation of the DNA damage response pathway. To investigate the contributions attributed to Tcf19 within the β-cells, we generated a β-cell specific knockdown of Tcf19. Using the Ins1Cre driver, we achieved significant knockdown specific to the β-cells. Compared to controls, loss of β-cell Tcf19 does not impact β-cell identity or proliferative capacity. These data provide evidence that knockdown of β-cell Tcf19 is not sufficient to recapitulate the wbTcf19KO results. Considering the effects of loss of Tcf19 under stress conditions in male mice, wbTcf19KO and WT female mice were fed a high-fat high-sucrose diet for 8-weeks prior to mating and they were maintained on diet until postpartum day 0 (P0). At P0 there was no difference in β-cell proliferation rates as measured by Ki67 or Cyclin D2 gene expression. However, wbTcf19KO islets had significantly more islet DNA damage than WT islets, as measured by yH2AX Western Blot. Additionally, wbTcf19KO islets had significantly higher expression of Gadd45a and a trend toward increased Parp9 expression. These data indicate that loss of Tcf19 leads to accumulated islet DNA damage during pregnancy. Overall, Tcf19 regulates β-cell mass dynamics under stress conditions through modulating the DDR pathway.
Subject Added Entry-Topical Term  
Endocrinology.
Subject Added Entry-Topical Term  
Physiology.
Index Term-Uncontrolled  
Tcf19
Index Term-Uncontrolled  
β-cells
Index Term-Uncontrolled  
DNA
Index Term-Uncontrolled  
Damage response
Index Term-Uncontrolled  
Transcription factor 19
Added Entry-Corporate Name  
The University of Wisconsin - Madison Endocrinol-Reprod Physiol - LS
Host Item Entry  
Dissertations Abstracts International. 84-12B.
Host Item Entry  
Dissertation Abstract International
Electronic Location and Access  
로그인을 한후 보실 수 있는 자료입니다.
Control Number  
joongbu:640004

MARC

 008240219s2023        ulk                      00        kor
■001000016933486
■00520240214101252
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798379728373
■035    ▼a(MiAaPQ)AAI30529841
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a612
■1001  ▼aBlumer,  Joseph  T.
■24510▼aTranscription  Factor  19:  Regulating  β-Cell  Proliferation  Through  Modulating  the  DNA  Damage  Response  Pathway▼h[electronic  resource]
■260    ▼a[S.l.]▼bThe  University  of  Wisconsin  -  Madison.  ▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a1  online  resource(111  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  84-12,  Section:  B.
■500    ▼aAdvisor:  Davis,  Dawn  B.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Wisconsin  -  Madison,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aDecreased  functional  β-cell  mass  is  a  driver  of  diabetes,  which  affects  millions  of  people  annually.  Genome-wide  association  studies  identified  transcription  factor  19  (Tcf19)  as  a  potential  causal  gene  for  both  type  1  and  type  2  diabetes.  Tcf19  is  expressed  in  humans  and  rodents  and  is  most  highly  in  the  pancreatic  islet  and  upregulated  in  mouse  models  of  non-diabetic  obesity.  TCF19  has  known  roles  in  β-cell  proliferation  and  survival  and  regulates  transcriptional  networks  in  the  DNA  damage  response  (DDR)  and  inflammatory  pathways.  We  generated  a  germline  whole-body  Tcf19  knockout  (wbTcf19KO)  mouse  model  to  study  Tcf19  in  vivo.  Lean  wbTcf19KO  mice  weigh  more  than  WT  animals,  but  maintain  euglycemia.  However,  loss  of  Tcf19  leads  to  hyperglycemia  in  response  to  chronic  metabolic  stress.  Islets  from  wbTcf19KO  are  significantly  smaller  than  WT  and  have  an  impaired  proliferative  response  to  short-term  metabolic  stress.  Additionally,  lean,  but  not  high-fat  diet  fed  wbTcf19KO  mouse  islets  have  increased  DNA  damage.  Ultimately,  our  data  provide  evidence  for  Tc19  regulating  β-cell  proliferation  through  modulation  of  the  DNA  damage  response  pathway.  To  investigate  the  contributions  attributed  to  Tcf19  within  the  β-cells,  we  generated  a  β-cell  specific  knockdown  of  Tcf19.  Using  the  Ins1Cre  driver,  we  achieved  significant  knockdown  specific  to  the  β-cells.  Compared  to  controls,  loss  of  β-cell  Tcf19  does  not  impact  β-cell  identity  or  proliferative  capacity.  These  data  provide  evidence  that  knockdown  of  β-cell  Tcf19  is  not  sufficient  to  recapitulate  the  wbTcf19KO  results.  Considering  the  effects  of  loss  of  Tcf19  under  stress  conditions  in  male  mice,  wbTcf19KO  and  WT  female  mice  were  fed  a  high-fat  high-sucrose  diet  for  8-weeks  prior  to  mating  and  they  were  maintained  on  diet  until  postpartum  day  0  (P0).  At  P0  there  was  no  difference  in  β-cell  proliferation  rates  as  measured  by  Ki67  or  Cyclin  D2  gene  expression.  However,  wbTcf19KO  islets  had  significantly  more  islet  DNA  damage  than  WT  islets,  as  measured  by  yH2AX  Western  Blot.  Additionally,  wbTcf19KO  islets  had  significantly  higher  expression  of  Gadd45a  and  a  trend  toward  increased  Parp9  expression.  These  data  indicate  that  loss  of  Tcf19  leads  to  accumulated  islet  DNA  damage  during  pregnancy.  Overall,  Tcf19  regulates  β-cell  mass  dynamics  under  stress  conditions  through  modulating  the  DDR  pathway.
■590    ▼aSchool  code:  0262.
■650  4▼aEndocrinology.
■650  4▼aPhysiology.
■653    ▼aTcf19
■653    ▼aβ-cells
■653    ▼aDNA
■653    ▼aDamage  response
■653    ▼aTranscription  factor  19
■690    ▼a0409
■690    ▼a0719
■71020▼aThe  University  of  Wisconsin  -  Madison▼bEndocrinol-Reprod  Physiol  -  LS.
■7730  ▼tDissertations  Abstracts  International▼g84-12B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0262
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933486▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    New Books MORE
    Related books MORE
    최근 3년간 통계입니다.

    Buch Status

    • Reservierung
    • 캠퍼스간 도서대출
    • 서가에 없는 책 신고
    • Meine Mappe
    Sammlungen
    Registrierungsnummer callnumber Standort Verkehr Status Verkehr Info
    TQ0025926 T   원문자료 열람가능/출력가능 열람가능/출력가능
    마이폴더 부재도서신고

    * Kredite nur für Ihre Daten gebucht werden. Wenn Sie buchen möchten Reservierungen, klicken Sie auf den Button.

    해당 도서를 다른 이용자가 함께 대출한 도서

    Related books

    Related Popular Books

    도서위치