Related Experiment Video
Updated: May 14, 2026

Oct4GiP Reporter Assay to Study Genes that Regulate Mouse Embryonic Stem Cell Maintenance and Self-renewal
Published on: May 30, 2012
Matrix remodeling maintains embryonic stem cell self-renewal by activating Stat3
Laralynne M Przybyla1, Thorold W Theunissen, Rudolf Jaenisch
1Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
Matrix metalloproteinases (MMPs) remodel the extracellular matrix, aiding embryonic stem cell (ESC) self-renewal. MMP1 addition supports leukemia inhibitory factor-independent mouse ESC self-renewal by exposing trapped growth factors.
Area of Science:
- Stem cell biology
- Extracellular matrix dynamics
- Cell signaling
Background:
- Embryonic stem cells (ESCs) self-renewal and differentiation are influenced by extracellular matrix (ECM) cues.
- Mechanisms linking ECM composition and remodeling to ESC fate remain poorly understood.
- ESCs produce their own ECM, which is actively remodeled by matrix metalloproteinases (MMPs).
Purpose of the Study:
- To investigate the role of ECM remodeling by MMPs in ESC self-renewal.
- To determine if MMP activity is required for maintaining ESC pluripotency.
- To explore the potential of specific MMPs in supporting leukemia inhibitory factor (LIF)-independent ESC self-renewal.
Main Methods:
- Utilized mouse embryonic stem cells (mESCs) and mouse embryonic fibroblast (MEF) feeders.
- Assessed the effect of MMP inhibition and activation on mESC self-renewal.
- Quantified the impact of exogenous MMP1 on LIF-independent mESC self-renewal.
- Investigated downstream signaling pathways (JAK/Stat3) and growth factor release.
Main Results:
- MMP-mediated ECM remodeling is crucial for ESC self-renewal; MMP inhibition impairs self-renewal.
- MEF feeders enhance MMP activity in a paracrine manner, promoting self-renewal.
- Recombinant MMP1 effectively supports long-term LIF-independent mESC self-renewal in a dose-dependent manner.
- MMP-induced ECM remodeling releases trapped autocrine self-renewal factors, such as ciliary neurotrophic factor (CNTF), activating JAK/Stat3 signaling.
Conclusions:
- ECM remodeling by MMPs plays a critical role in maintaining ESC self-renewal.
- Feeder cells support ESC self-renewal partly by stimulating MMP activity.
- MMP1 can be utilized to achieve LIF-independent mESC self-renewal by exposing endogenous pro-self-renewal ligands.
Related Concept Videos
Maintenance of the ES Cell State
Chromatin Modification in iPS Cells
Compact chromatin makes reprogramming difficult. Enzymes, such as histone demethylases and acetyltransferases, are often added during reprogramming to loosen the chromatin, making the DNA more accessible to transcription factors. Molecules that inhibit histone...
Somatic to iPS Cell Reprogramming
Methods of Nuclear Reprogramming
Stem Cell Niche
Role Of Notch Signalling In Intestinal Stem Cell Renewal
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...

