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Role of miR-19a-3p and miR-19b-3p in Microglia Activation and Neuroinflammation
Role of miR-19a-3p and miR-19b-3p in Microglia Activation and Neuroinflammation
Role of miR-19a-3p and miR-19b-3p in Microglia Activation and Neuroinflammation

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202102945
ISBN  
9798291504895
DDC  
616.079
저자명  
Sahebdel, Faezeh.
서명/저자  
Role of miR-19a-3p and miR-19b-3p in Microglia Activation and Neuroinflammation
발행사항  
[Sl] : University of Minnesota, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
145 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Battaglino, Ricardo A.
학위논문주기  
Thesis (Ph.D.)--University of Minnesota, 2024.
초록/해제  
요약Background: Neuropathic pain induced by spinal cord injury (SCI) is a severe secondary health issue affecting up to 60% of individuals with SCI. Following SCI, activation of microglia, the immune cells of the central nervous system, triggers neuroinflammation through the production of pro-inflammatory cytokines, contributing to neuropathic pain. The relationship between inflammation and pain is well-established, and the neuroinflammatory effects of SCI are key to the chronic and intense pain experienced by many with SCI. MicroRNAs (miRNAs) have emerged as significant regulators of neuroinflammation. Previous research from our lab identified elevated levels of circulating miR-19a and miR-19b in individuals with SCI who suffer from neuropathic pain compared to those without pain.Purpose and Approach: This study aims to investigate the impact of miR-19a and miR-19b on microglia activation and neuroinflammation. The specific objectives are: 1) To determine the role of miR-19a-3p and miR-19b-3p in microglia activation, neuroinflammation, and the NF-κB and JAK-STAT signaling pathways following microglia activation. 2) To analyze the transcriptomic profiling of primary microglia and the effects of miR-19a-3p and miR-19b-3p on microglia activation and neuroinflammation. 3) To examine the impact of miR-19a-3p and miR-19b-3p on the expression of the neuroprotective genes Nurr1 (Nr4a2) and Nur77 (Nr4a1) following microglia activation and SCI.Results: Findings from Aim 1 revealed that mimics of miR-19a or miR-19b enhanced microglia activation, indicated by increased pro-inflammatory cytokine expression and decreased SOCS1 and SOCS3 expression. Additionally, miR-19a and miR-19b were found to enhance signaling through the NF-κB and JAK-STAT pathways. Aim 2 results showed that miR-19a and miR-19b modulate diverse gene expression patterns, regulate inflammation, and induce inflammatory responses in microglia as per RNA sequencing analysis. Aim 3 findings indicated that miR-19a and miR-19b decreased the expression of the neuroprotective genes Nurr1 and Nur77, with lower levels observed in the brains of SCI-rats.Summary: Findings from Aim 1 demonstrate that miR-19a or miR-19b treatment of microglia inhibits SOCS1 and SOCS3 expression, leading to increased pro-inflammatory cytokine expression and activation of NF-κB and JAK-STAT pathways. These results suggest that miR-19a and miR-19b activate microglia and elevate neuroinflammation. Evidence from Aim 2 shows that miR-19a and miR-19b induce distinct gene expression patterns and inflammatory profiles in microglia. This study highlights the importance of these miRNAs in microglia activation and neuroinflammation by examining their effects on gene and transcription factor expression in microglia. Aim 3 findings suggest that overexpression of miR-19a and miR-19b leads to reduced levels of Nurr1 and Nur77, correlating with enhanced inflammatory responses post-SCI. These results indicate that increased miR-19a and miR-19b following SCI may reduce Nurr1 and Nur77, thereby increasing the inflammatory response in microglia. Insights from this study may pave the way for developing miRNA-targeted therapies to modulate neuroinflammation and alleviate neuropathic pain in individuals with SCI.
일반주제명  
Immunology
일반주제명  
Biology
일반주제명  
Neurosciences
일반주제명  
Molecular biology
키워드  
Microglia activation
키워드  
Neuroinflammation
키워드  
Neuropathic pain
키워드  
Spinal cord injury
기타저자  
University of Minnesota Rehabilitation Science
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aSahebdel,  Faezeh.
■24510▼aRole  of  miR-19a-3p  and  miR-19b-3p  in  Microglia  Activation  and  Neuroinflammation
■260    ▼a[Sl]▼bUniversity  of  Minnesota▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a145  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Battaglino,  Ricardo  A.
■5021  ▼aThesis  (Ph.D.)--University  of  Minnesota,  2024.
■520    ▼aBackground:  Neuropathic  pain  induced  by  spinal  cord  injury  (SCI)  is  a  severe  secondary  health  issue  affecting  up  to  60%  of  individuals  with  SCI.  Following  SCI,  activation  of  microglia,  the  immune  cells  of  the  central  nervous  system,  triggers  neuroinflammation  through  the  production  of  pro-inflammatory  cytokines,  contributing  to  neuropathic  pain.  The  relationship  between  inflammation  and  pain  is  well-established,  and  the  neuroinflammatory  effects  of  SCI  are  key  to  the  chronic  and  intense  pain  experienced  by  many  with  SCI.  MicroRNAs  (miRNAs)  have  emerged  as  significant  regulators  of  neuroinflammation.  Previous  research  from  our  lab  identified  elevated  levels  of  circulating  miR-19a  and  miR-19b  in  individuals  with  SCI  who  suffer  from  neuropathic  pain  compared  to  those  without  pain.Purpose  and  Approach:  This  study  aims  to  investigate  the  impact  of  miR-19a  and  miR-19b  on  microglia  activation  and  neuroinflammation.  The  specific  objectives  are:  1)  To  determine  the  role  of  miR-19a-3p  and  miR-19b-3p  in  microglia  activation,  neuroinflammation,  and  the  NF-κB  and  JAK-STAT  signaling  pathways  following  microglia  activation.  2)  To  analyze  the  transcriptomic  profiling  of  primary  microglia  and  the  effects  of  miR-19a-3p  and  miR-19b-3p  on  microglia  activation  and  neuroinflammation.  3)  To  examine  the  impact  of  miR-19a-3p  and  miR-19b-3p  on  the  expression  of  the  neuroprotective  genes  Nurr1  (Nr4a2)  and  Nur77  (Nr4a1)  following  microglia  activation  and  SCI.Results:  Findings  from  Aim  1  revealed  that  mimics  of  miR-19a  or  miR-19b  enhanced  microglia  activation,  indicated  by  increased  pro-inflammatory  cytokine  expression  and  decreased  SOCS1  and  SOCS3  expression.  Additionally,  miR-19a  and  miR-19b  were  found  to  enhance  signaling  through  the  NF-κB  and  JAK-STAT  pathways.  Aim  2  results  showed  that  miR-19a  and  miR-19b  modulate  diverse  gene  expression  patterns,  regulate  inflammation,  and  induce  inflammatory  responses  in  microglia  as  per  RNA  sequencing  analysis.  Aim  3  findings  indicated  that  miR-19a  and  miR-19b  decreased  the  expression  of  the  neuroprotective  genes  Nurr1  and  Nur77,  with  lower  levels  observed  in  the  brains  of  SCI-rats.Summary:  Findings  from  Aim  1  demonstrate  that  miR-19a  or  miR-19b  treatment  of  microglia  inhibits  SOCS1  and  SOCS3  expression,  leading  to  increased  pro-inflammatory  cytokine  expression  and  activation  of  NF-κB  and  JAK-STAT  pathways.  These  results  suggest  that  miR-19a  and  miR-19b  activate  microglia  and  elevate  neuroinflammation.  Evidence  from  Aim  2  shows  that  miR-19a  and  miR-19b  induce  distinct  gene  expression  patterns  and  inflammatory  profiles  in  microglia.  This  study  highlights  the  importance  of  these  miRNAs  in  microglia  activation  and  neuroinflammation  by  examining  their  effects  on  gene  and  transcription  factor  expression  in  microglia.  Aim  3  findings  suggest  that  overexpression  of  miR-19a  and  miR-19b  leads  to  reduced  levels  of  Nurr1  and  Nur77,  correlating  with  enhanced  inflammatory  responses  post-SCI.  These  results  indicate  that  increased  miR-19a  and  miR-19b  following  SCI  may  reduce  Nurr1  and  Nur77,  thereby  increasing  the  inflammatory  response  in  microglia.  Insights  from  this  study  may  pave  the  way  for  developing  miRNA-targeted  therapies  to  modulate  neuroinflammation  and  alleviate  neuropathic  pain  in  individuals  with  SCI.
■590    ▼aSchool  code:  0130.
■650  4▼aImmunology
■650  4▼aBiology
■650  4▼aNeurosciences
■650  4▼aMolecular  biology
■653    ▼aMicroglia  activation
■653    ▼aNeuroinflammation
■653    ▼aNeuropathic  pain
■653    ▼aSpinal  cord  injury
■690    ▼a0982
■690    ▼a0306
■690    ▼a0317
■690    ▼a0307
■71020▼aUniversity  of  Minnesota▼bRehabilitation  Science.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0130
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356531▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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