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Targeting the Thyroid-Stimulating Hormone Receptor (TSHR) in Thyroid Cancer
Targeting the Thyroid-Stimulating Hormone Receptor (TSHR) in Thyroid Cancer
Targeting the Thyroid-Stimulating Hormone Receptor (TSHR) in Thyroid Cancer

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202103056
ISBN  
9798315793366
DDC  
615
저자명  
Gimblet, Grayson Robert.
서명/저자  
Targeting the Thyroid-Stimulating Hormone Receptor (TSHR) in Thyroid Cancer
발행사항  
[Sl] : The University of Alabama at Birmingham, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
172 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Lapi, Suzanne E.
학위논문주기  
Thesis (Ph.D.)--The University of Alabama at Birmingham, 2025.
초록/해제  
요약Radioactive iodine (RAI) has been effective in the treatment of thyroid cancer, the most common endocrine neoplasia, since its introduction into clinical use over eighty years ago. However, not all patients benefit from RAI. Up to 20% of patients with well-differentiated thyroid cancer (WDTC) become radioactive iodine refractory (RAI-R). These RAI-R patients have 5-year survival rates of 50% and 10-year survival rates of 10%. In addition, more aggressive subtypes including oncocytic thyroid carcinoma (OC), poorly differentiated thyroid carcinoma (PDTC), and anaplastic thyroid carcinoma (ATC) are less responsive to RAI therapy. Despite accounting for less than 5% of annual thyroid cancer cases, PDTC and ATC represent more than half of annual thyroid cancer mortality.To address the need for new diagnostic and therapeutic strategies in these patients, this study explores the thyroid-stimulating hormone receptor (TSHR) as an alternative target in thyroid cancer. We described the frequency of TSHR expression in OC (62%), PDTC (58%), and ATC (0%) relative to established expression patterns in WDTC (90%), with particular emphasis placed on expression patterns in RAI-R disease. As thyroid cancer loses endogenous TSHR expression in monolayer cell culture, we established cell lines with stable TSHR expression. We used these cell lines to evaluate TSHR-targeted radiopharmaceuticals. We designed PET radiopharmaceuticals based on two recombinant human thyroid-stimulating hormone analogues, TR1402 and thyrotropin-alfa, radiolabeled with 89Zr (t1/2 = 78.4 h, β+=23%). We performed in vitro assessments of these TSHR-targeted tracers including cell uptake, receptor blocking, internalization, and binding affinity. We evaluated tumor uptake and biodistribution with in vivo PET imaging and ex vivo biodistribution using a subcutaneous xenograft model established in male and female athymic nude mice. The results of these studies show targeting the TSHR is a promising approach for RAI-R and aggressive thyroid cancers. The PET tracers in this study can be used as the basis for future work to design a theranostic TSHR-targeted approach.
일반주제명  
Pharmaceutical sciences
일반주제명  
Chemistry
일반주제명  
Oncology
키워드  
Anaplastic thyroid carcinoma
키워드  
Oncocytic thyroid carcinoma
키워드  
Radioactive iodine
키워드  
Thyroid cancer
기타저자  
The University of Alabama at Birmingham Pharmacology and Toxicology
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
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MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
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■1001  ▼aGimblet,  Grayson  Robert.
■24510▼aTargeting  the  Thyroid-Stimulating  Hormone  Receptor  (TSHR)  in  Thyroid  Cancer
■260    ▼a[Sl]▼bThe  University  of  Alabama  at  Birmingham▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a172  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Lapi,  Suzanne  E.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Alabama  at  Birmingham,  2025.
■520    ▼aRadioactive  iodine  (RAI)  has  been  effective  in  the  treatment  of  thyroid  cancer,  the  most  common  endocrine  neoplasia,  since  its  introduction  into  clinical  use  over  eighty  years  ago.  However,  not  all  patients  benefit  from  RAI.  Up  to  20%  of  patients  with  well-differentiated  thyroid  cancer  (WDTC)  become  radioactive  iodine  refractory  (RAI-R).  These  RAI-R  patients  have  5-year  survival  rates  of  50%  and  10-year  survival  rates  of  10%.  In  addition,  more  aggressive  subtypes  including  oncocytic  thyroid  carcinoma  (OC),  poorly  differentiated  thyroid  carcinoma  (PDTC),  and  anaplastic  thyroid  carcinoma  (ATC)  are  less  responsive  to  RAI  therapy.  Despite  accounting  for  less  than  5%  of  annual  thyroid  cancer  cases,  PDTC  and  ATC  represent  more  than  half  of  annual  thyroid  cancer  mortality.To  address  the  need  for  new  diagnostic  and  therapeutic  strategies  in  these  patients,  this  study  explores  the  thyroid-stimulating  hormone  receptor  (TSHR)  as  an  alternative  target  in  thyroid  cancer.  We  described  the  frequency  of  TSHR  expression  in  OC  (62%),  PDTC  (58%),  and  ATC  (0%)  relative  to  established  expression  patterns  in  WDTC  (90%),  with  particular  emphasis  placed  on  expression  patterns  in  RAI-R  disease.  As  thyroid  cancer  loses  endogenous  TSHR  expression  in  monolayer  cell  culture,  we  established  cell  lines  with  stable  TSHR  expression.  We  used  these  cell  lines  to  evaluate  TSHR-targeted  radiopharmaceuticals.  We  designed  PET  radiopharmaceuticals  based  on  two  recombinant  human  thyroid-stimulating  hormone  analogues,  TR1402  and  thyrotropin-alfa,  radiolabeled  with  89Zr  (t1/2  =  78.4  h,  β+=23%).  We  performed  in  vitro  assessments  of  these  TSHR-targeted  tracers  including  cell  uptake,  receptor  blocking,  internalization,  and  binding  affinity.  We  evaluated  tumor  uptake  and  biodistribution  with  in  vivo  PET  imaging  and  ex  vivo  biodistribution  using  a  subcutaneous  xenograft  model  established  in  male  and  female  athymic  nude  mice.  The  results  of  these  studies  show  targeting  the  TSHR  is  a  promising  approach  for  RAI-R  and  aggressive  thyroid  cancers.  The  PET  tracers  in  this  study  can  be  used  as  the  basis  for  future  work  to  design  a  theranostic  TSHR-targeted  approach.
■590    ▼aSchool  code:  0005.
■650  4▼aPharmaceutical  sciences
■650  4▼aChemistry
■650  4▼aOncology
■653    ▼aAnaplastic  thyroid  carcinoma
■653    ▼aOncocytic  thyroid  carcinoma
■653    ▼aRadioactive  iodine
■653    ▼aThyroid  cancer
■690    ▼a0572
■690    ▼a0485
■690    ▼a0992
■71020▼aThe  University  of  Alabama  at  Birmingham▼bPharmacology  and  Toxicology.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0005
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356888▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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