본문

서브메뉴

The Isoform Impact: Investigating the Role of Short-Form Ron in Breast Cancer Metastasis
The Isoform Impact: Investigating the Role of Short-Form Ron in Breast Cancer Metastasis
The Isoform Impact: Investigating the Role of Short-Form Ron in Breast Cancer Metastasis

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103051
ISBN  
9798293834907
DDC  
616.99
저자명  
Viswanath, Pavitra.
서명/저자  
The Isoform Impact: Investigating the Role of Short-Form Ron in Breast Cancer Metastasis
발행사항  
[Sl] : The University of Utah, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
199 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Welm, Alana Lee.
학위논문주기  
Thesis (D.Phil.)--The University of Utah, 2025.
초록/해제  
요약Breast cancer is the most common type of cancer and is the leading cause of cancer-related deaths among women worldwide. However, around 30% of breast cancer patients eventually develop metastatic disease, which is incurable, leading to a decrease in their 5-year survival rate to about 29%. Ron receptor tyrosine kinase has been identified to be a key mediator of breast cancer metastasis. Higher levels of Ron expression have been shown to correlate with more aggressive disease, increased metastatic potential, and reduced survival rates in patients. Multiple isoforms of Ron that produced by alternative splicing or protein truncation have been identified in various cancers. Short-form Ron (sfRon), generated from an alternative promoter within the Ron locus, is the major alternative isoform in breast cancer.Studies from the Welm lab and others have shown that Ron or sfRon expression in breast cancer cell lines and patient-derived xenograft (PDX) models promote spontaneous metastasis from mammary tumors to bone, lung, and liver. In mouse models, the Welm lab found that the absence of both Ron and sfRon led to a significant reduction in lung and bone metastasis compared to normal wild-type mice. Notably, deletion of host sfRon alone nearly eliminated metastasis, indicating its crucial role in the metastatic process. While Ron has received considerable attention, sfRon remains understudied despite its potential significance. Given its relative lack of investigation, the focus of this dissertation is centered on comprehending the specific contribution and impact of sfRon on metastatic phenotypes.I employed CRISPR activation (CRISPRa), a powerful tool for precisely regulating gene expression in mouse mammary tumor cells, to study if the upregulation of endogenous sfRon drives metastasis. I first verified dCas9 binding, promoter activation, and sfRon gene expression from chromatin immunoprecipitation and RNA sequencing studies. I found that CRISPRa-mediated endogenous upregulation, but not cDNA overexpression of sfRon, resulted in increased lung metastasis in mice. I also found that this phenotype was specific to sfRon mRNA, as knockdown of sfRon mRNA reverted this metastatic phenotype. These findings highlight the significance of sfRon as a potential therapeutic target for the development of effective treatments and improved outcomes in breast cancer.
일반주제명  
Oncology
일반주제명  
Public health
일반주제명  
Genetics
키워드  
Breast cancer
키워드  
Cancer metastasis
키워드  
Patient-derived xenograft
키워드  
Ron expression
키워드  
Mammary tumors
기타저자  
The University of Utah Oncological Sciences
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017356864
■00520260202103051
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798293834907
■035    ▼a(MiAaPQ)AAI31931852
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616.99
■1001  ▼aViswanath,  Pavitra.
■24510▼aThe  Isoform  Impact:  Investigating  the  Role  of  Short-Form  Ron  in  Breast  Cancer  Metastasis
■260    ▼a[Sl]▼bThe  University  of  Utah▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a199  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Welm,  Alana  Lee.
■5021  ▼aThesis  (D.Phil.)--The  University  of  Utah,  2025.
■520    ▼aBreast  cancer  is  the  most  common  type  of  cancer  and  is  the  leading  cause  of  cancer-related  deaths  among  women  worldwide.  However,  around  30%  of  breast  cancer  patients  eventually  develop  metastatic  disease,  which  is  incurable,  leading  to  a  decrease  in  their  5-year  survival  rate  to  about  29%.  Ron  receptor  tyrosine  kinase  has  been  identified  to  be  a  key  mediator  of  breast  cancer  metastasis.  Higher  levels  of  Ron  expression  have  been  shown  to  correlate  with  more  aggressive  disease,  increased  metastatic  potential,  and  reduced  survival  rates  in  patients.  Multiple  isoforms  of  Ron  that  produced  by  alternative  splicing  or  protein  truncation  have  been  identified  in  various  cancers.  Short-form  Ron  (sfRon),  generated  from  an  alternative  promoter  within  the  Ron  locus,  is  the  major  alternative  isoform  in  breast  cancer.Studies  from  the  Welm  lab  and  others  have  shown  that  Ron  or  sfRon  expression  in  breast  cancer  cell  lines  and  patient-derived  xenograft  (PDX)  models  promote  spontaneous  metastasis  from  mammary  tumors  to  bone,  lung,  and  liver.  In  mouse  models,  the  Welm  lab  found  that  the  absence  of  both  Ron  and  sfRon  led  to  a  significant  reduction  in  lung  and  bone  metastasis  compared  to  normal  wild-type  mice.  Notably,  deletion  of  host  sfRon  alone  nearly  eliminated  metastasis,  indicating  its  crucial  role  in  the  metastatic  process.  While  Ron  has  received  considerable  attention,  sfRon  remains  understudied  despite  its  potential  significance.  Given  its  relative  lack  of  investigation,  the  focus  of  this dissertation  is  centered  on  comprehending  the  specific  contribution  and  impact  of  sfRon  on  metastatic  phenotypes.I  employed  CRISPR  activation  (CRISPRa),  a  powerful  tool  for  precisely  regulating  gene  expression  in  mouse  mammary  tumor  cells,  to  study  if  the  upregulation  of  endogenous  sfRon  drives  metastasis.  I  first  verified  dCas9  binding,  promoter  activation,  and  sfRon  gene  expression  from  chromatin  immunoprecipitation  and  RNA  sequencing  studies.  I  found  that  CRISPRa-mediated  endogenous  upregulation,  but  not  cDNA  overexpression  of  sfRon,  resulted  in  increased  lung  metastasis  in  mice.  I  also  found  that  this  phenotype  was  specific  to  sfRon  mRNA,  as  knockdown  of  sfRon  mRNA  reverted  this  metastatic  phenotype.  These  findings  highlight  the  significance  of  sfRon  as  a  potential  therapeutic  target  for  the  development  of  effective  treatments  and  improved  outcomes  in  breast  cancer.
■590    ▼aSchool  code:  0240.
■650  4▼aOncology
■650  4▼aPublic  health
■650  4▼aGenetics
■653    ▼aBreast  cancer
■653    ▼aCancer  metastasis
■653    ▼aPatient-derived  xenograft
■653    ▼aRon  expression
■653    ▼aMammary  tumors
■690    ▼a0992
■690    ▼a0369
■690    ▼a0573
■71020▼aThe  University  of  Utah▼bOncological  Sciences.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0240
■791    ▼aD.Phil.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356864▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF18623 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.