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NIH Research Festival

September 23 – 25, 2024

Unlocking cellular plasticity: Enhancing human iPSC reprogramming through bromodomain inhibition and extracellular matrix gene expression regulation

Authors

  • J Yang
  • HK Kinyamu
  • JM Ward
  • E Scappini
  • G Muse
  • TK Archer

Abstract

The transformation from a fibroblast mesenchymal cell state to an epithelial-like state is critical for Induced Pluripotent Stem Cell (iPSC) reprogramming. In this report, we describe studies with PFI-3, a small molecule inhibitor that specifically targets the bromodomains of SMARCA2/4 and PBRM1 subunits of SWI/SNF complex, as an enhancer of iPSC reprogramming efficiency. Our findings reveal that PFI-3 induces cellular plasticity in multiple human dermal fibroblasts, leading to a mesenchymal-epithelial transition (MET) during iPSC formation. This transition is characterized by the upregulation of E-cadherin expression, a key protein involved in epithelial cell adhesion. Additionally, we identified COL11A1 as a reprogramming barrier and demonstrated COL11A1 knockdown increased reprogramming efficiency. Notably, we found that PFI-3 significantly reduced the expression of numerous extracellular matrix (ECM) genes, particularly those involved in collagen assembly. Our research provides key insights into the early stages of iPSC reprogramming, highlighting the crucial role of ECM changes and cellular plasticity in this process.

Scientific Focus Area: Stem Cell Biology

This page was last updated on Tuesday, August 6, 2024

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Current Research Festival

  • 2025
  • 2024
    • General Schedule of Events
    • 2024 NIH Distinguished Scholars Program
    • Poster Sessions
    • Concurrent Workshops
    • NIH Resource Information Fair
    • National Academy of Science Mini-Symposium
    • Special Wednesday Events
    • Vendor Exhibit Information
    • Green Labs Fair
    • Research Festival Committee
  • 2023
    • General Schedule of Events
    • NIH Early–Career Investigator Lectures
    • Poster Sessions
    • Concurrent Workshops
    • NIH Resource Information Fair
    • Vendor Exhibit Information
    • Research Festival Committee
  • 2021
  • 2019
    • General Schedule of Events
    • Plenary Sessions
    • Poster Session
    • Data Blitz
    • FARE Award Ceremony
    • Special Exhibits on Resources for Intramural Research
    • Technical Sales Association (TSA) Research Festival Exhibit Tent Show
    • Research Festival Committee
  • 2018
    • General Schedule of Events
    • Plenary Sessions
    • Concurrent Symposia Sessions
    • Poster Sessions
    • FARE Award Ceremony
    • Special Exhibits on Resources for Intramural Research
    • Technical Sales Association (TSA) Research Festival Exhibit Tent Show
    • Research Festival Committees
  • 2017
    • General Schedule of Events
    • Plenary Sessions
    • Concurrent Symposia Sessions
    • Poster Sessions
    • FARE Award Ceremony
    • Future Research Leaders
    • Special Exhibits on Resources for Intramural Research
    • Technical Sales Association (TSA) Research Festival Exhibit Tent Show
    • Research Festival Committees
  • 2016
    • General Schedule of Events
    • Plenary Sessions
    • Concurrent Symposia Sessions
    • Poster Sessions
    • Browse by Presenter Name
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    • FARE Award Ceremony
    • Future Research Leaders
    • Special Exhibits on Resources for Intramural Research
    • Technical Sales Association (TSA) Research Festival Exhibit Tent Show
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    • Research Festival Committees
  • 2015
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    • Plenary Sessions
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