본문

서브메뉴

Nucleo-Loss: Characterization of Ribosome Biogenesis Factor DIMT1- [electronic resource]
Nucleo-Loss: Characterization of Ribosome Biogenesis Factor DIMT1- [electronic resource]

상세정보

자료유형  
 학위논문
Control Number  
0016931362
International Standard Book Number  
9798379750565
Dewey Decimal Classification Number  
574
Main Entry-Personal Name  
Stoute, Julian.
Publication, Distribution, etc. (Imprint  
[S.l.] : University of Pennsylvania., 2023
Publication, Distribution, etc. (Imprint  
Ann Arbor : ProQuest Dissertations & Theses, 2023
Physical Description  
1 online resource(170 p.)
General Note  
Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
General Note  
Advisor: Liu, Kathy;Bonasio, Roberto.
Dissertation Note  
Thesis (Ph.D.)--University of Pennsylvania, 2023.
Restrictions on Access Note  
This item must not be sold to any third party vendors.
Summary, Etc.  
요약The ribosome is an essential component of the central dogma of life. It is primarily responsible for translation, in which mRNA transcripts are decoded, and proteins are synthesized. The ribosome consists primarily of ribosomal RNA (rRNA). After transcription, it is processed in a series of steps where it is folded, cut, and chemically modified until mature ribosome subunits are formed and exported out of the nucleus. One of the early steps of the process of ribosome biogenesis involves the methyltransferase enzyme DIMT1. This enzyme is essential for processing 18S rRNA, which makes up the ribosome's small subunit (SSU). DIMT1 specifically binds during the post-A1 stage of SSU processing to helix 45 of 18S rRNA, where it installs m26,6A modification at sites 1850 and 1851 in the mammalian ribosomal sequence. The installation of m26,6A at these sites in the SSU is highly conserved across the kingdoms of life.Additionally, knockout (KO) of DIMT1 is known to be lethal. However, the exact details of DIMT1 functions in 18S biogenesis and what function 18S m26,6A serves for ribosome activity are not fully understood. In this thesis, we delve into the science behind DIMT1 and describe the properties behind its operation in cell biology. Firstly, our high throughput sequencing experiments show that DIMT1 significantly impacts several transcripts' transcription and translation efficiency. These transcripts are associated with various Gene Ontology (GO) terms. In particular, we identified transcripts related to cell cycle regulation, translation, DNA damage response, cell adhesion/migration, and immune response pathways. We find that DIMT1's catalytic activity is non-essential for cell survival or ribosome biogenesis.Additionally, our cell line model for catalytically inactive DIMT1 displays only a minor effect on translation rates and the fidelity of internal ribosome entry, while catalysis is dispensable for ribosome biogenesis. Secondly, we find that the DIMT1's RNA binding ability plays a huge role in cell biology. Our RNA-binding deficient DIMT1 model demonstrates that without DIMT1's ability to bind to RNA, RNA biogenesis is impaired, and cell viability is lost. Additionally, DIMT1 RNA binding is essential for DIMT1's ability to phase separate and localize to the nucleolus, the primary site of rRNA processing. Finally, we also provide evidence of DIMT1-mediated m26,6A modification on a species of small RNAs. Together, our data expands on the role DIMT1 plays in ribosome processing and cell function and expands on the importance of ribosome biogenesis factors, the role of phase separation, and the diversity of factors that drive phase separation. Additionally, our data provide more context for perceiving DIMT1 as an oncogene and provides evidence to support targeting DIMT1 as a treatment for a variety of cancer, including multiple hematopoietic malignancies and gastric carcinomas in particular.
Subject Added Entry-Topical Term  
Biochemistry.
Subject Added Entry-Topical Term  
Biophysics.
Subject Added Entry-Topical Term  
Molecular biology.
Index Term-Uncontrolled  
DIMT1
Index Term-Uncontrolled  
Nucleolus
Index Term-Uncontrolled  
Phase Seperation
Index Term-Uncontrolled  
Ribosome
Index Term-Uncontrolled  
Ribosome biogenesis
Index Term-Uncontrolled  
RNA modification
Index Term-Uncontrolled  
Ribosomal RNA
Added Entry-Corporate Name  
University of Pennsylvania Biochemistry and Molecular Biophysics
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:643397

MARC

 008240221s2023        ulk                      00        kor
■001000016931362
■00520240214100008
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798379750565
■035    ▼a(MiAaPQ)AAI30250693
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574
■1001  ▼aStoute,  Julian.
■24510▼aNucleo-Loss:  Characterization  of  Ribosome  Biogenesis  Factor  DIMT1▼h[electronic  resource]
■260    ▼a[S.l.]▼bUniversity  of  Pennsylvania.  ▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a1  online  resource(170  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  84-12,  Section:  B.
■500    ▼aAdvisor:  Liu,  Kathy;Bonasio,  Roberto.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aThe  ribosome  is  an  essential  component  of  the  central  dogma  of  life.  It  is  primarily  responsible  for  translation,  in  which  mRNA  transcripts  are  decoded,  and  proteins  are  synthesized.  The  ribosome  consists  primarily  of  ribosomal  RNA  (rRNA).  After  transcription,  it  is  processed  in  a  series  of  steps  where  it  is  folded,  cut,  and  chemically  modified  until  mature  ribosome  subunits  are  formed  and  exported  out  of  the  nucleus.  One  of  the  early  steps  of  the  process  of  ribosome  biogenesis  involves  the  methyltransferase  enzyme  DIMT1.  This  enzyme  is  essential  for  processing  18S  rRNA,  which  makes  up  the  ribosome's  small  subunit  (SSU).  DIMT1  specifically  binds  during  the  post-A1  stage  of  SSU  processing  to  helix  45  of  18S  rRNA,  where  it  installs  m26,6A  modification  at  sites  1850  and  1851  in  the  mammalian  ribosomal  sequence.  The  installation  of  m26,6A  at  these  sites  in  the  SSU  is  highly  conserved  across  the  kingdoms  of  life.Additionally,  knockout  (KO)  of  DIMT1  is  known  to  be  lethal.  However,  the  exact  details  of  DIMT1  functions  in  18S  biogenesis  and  what  function  18S  m26,6A  serves  for  ribosome  activity  are  not  fully  understood.  In  this  thesis,  we  delve  into  the  science  behind  DIMT1  and  describe  the  properties  behind  its  operation  in  cell  biology.  Firstly,  our  high  throughput  sequencing  experiments  show  that  DIMT1  significantly  impacts  several  transcripts'  transcription  and  translation  efficiency.  These  transcripts  are  associated  with  various  Gene  Ontology  (GO)  terms.  In  particular,  we  identified  transcripts  related  to  cell  cycle  regulation,  translation,  DNA  damage  response,  cell  adhesion/migration,  and  immune  response  pathways.  We  find  that  DIMT1's  catalytic  activity  is  non-essential  for  cell  survival  or  ribosome  biogenesis.Additionally,  our  cell  line  model  for  catalytically  inactive  DIMT1  displays  only  a  minor  effect  on  translation  rates  and  the  fidelity  of  internal  ribosome  entry,  while  catalysis  is  dispensable  for  ribosome  biogenesis.  Secondly,  we  find  that  the  DIMT1's  RNA  binding  ability  plays  a  huge  role  in  cell  biology.  Our  RNA-binding  deficient  DIMT1  model  demonstrates  that  without  DIMT1's  ability  to  bind  to  RNA,  RNA  biogenesis  is  impaired,  and  cell  viability  is  lost.  Additionally,  DIMT1  RNA  binding  is  essential  for  DIMT1's  ability  to  phase  separate  and  localize  to  the  nucleolus,  the  primary  site  of  rRNA  processing.  Finally,  we  also  provide  evidence  of  DIMT1-mediated  m26,6A  modification  on  a  species  of  small  RNAs.  Together,  our  data  expands  on  the  role  DIMT1  plays  in  ribosome  processing  and  cell  function  and  expands  on  the  importance  of  ribosome  biogenesis  factors,  the  role  of  phase  separation,  and  the  diversity  of  factors  that  drive  phase  separation.  Additionally,  our  data  provide  more  context  for  perceiving  DIMT1  as  an  oncogene  and  provides  evidence  to  support  targeting  DIMT1  as  a  treatment  for  a  variety  of  cancer,  including  multiple  hematopoietic  malignancies  and  gastric  carcinomas  in  particular.
■590    ▼aSchool  code:  0175.
■650  4▼aBiochemistry.
■650  4▼aBiophysics.
■650  4▼aMolecular  biology.
■653    ▼aDIMT1
■653    ▼aNucleolus
■653    ▼aPhase  Seperation
■653    ▼aRibosome
■653    ▼aRibosome  biogenesis
■653    ▼aRNA  modification
■653    ▼aRibosomal  RNA
■690    ▼a0487
■690    ▼a0786
■690    ▼a0307
■71020▼aUniversity  of  Pennsylvania▼bBiochemistry  and  Molecular  Biophysics.
■7730  ▼tDissertations  Abstracts  International▼g84-12B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16931362▼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.

    詳細情報

    • 予約
    • 캠퍼스간 도서대출
    • 서가에 없는 책 신고
    • 私のフォルダ
    資料
    登録番号 請求記号 場所 ステータス 情報を貸す
    TQ0029261 T   원문자료 열람가능/출력가능 열람가능/출력가능
    마이폴더 부재도서신고

    *ご予約は、借入帳でご利用いただけます。予約をするには、予約ボタンをクリックしてください

    해당 도서를 다른 이용자가 함께 대출한 도서

    Related books

    Related Popular Books

    도서위치