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Updated: Mar 21, 2026
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Generating a Fractal Microstructure of Laminin-111 to Signal to Cells
Published on: September 28, 2020
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Laminin regulates PDGFRβ(+) cell stemness and muscle development.
Yao Yao1,2, Erin H Norris1, Christopher E Mason3,4,5,6
1Laboratory of Neurobiology and Genetics, The Rockefeller University, 1230 York Avenue, New York, New York 10065, USA.
Nature Communications
|May 4, 2016
Summary
Laminin, produced by muscle stem cells, is crucial for muscle regeneration in muscular dystrophy. This study reveals laminin
Area of Science:
- Muscle biology
- Regenerative medicine
- Cell differentiation
Background:
- Muscle-resident PDGFRβ(+) cells, including pericytes and PW1(+) interstitial cells (PICs), have a dual role in muscular dystrophy, impacting muscle regeneration.
- The regulatory mechanisms governing the differentiation and fate determination of these PDGFRβ(+) cells are not fully understood.
Purpose of the Study:
- To investigate the role of PDGFRβ(+) cell-derived laminin in regulating the differentiation and fate of these cells.
- To explore the potential of laminin as a therapeutic agent for muscular dystrophy.
Main Methods:
- Utilized a conditional knockout mouse model to study PDGFRβ(+) cell function.
- Administered laminin to assess its therapeutic effects.
- Performed RNAseq analysis to identify molecular pathways involved in laminin-mediated regulation.
Main Results:
- PDGFRβ(+) cell-derived laminin inhibits cell proliferation and adipogenesis while promoting myogenesis.
- Laminin partially reversed the muscular dystrophy phenotype at molecular, structural, and functional levels.
- RNAseq identified gpihbp1 as a key mediator of laminin's effect on PDGFRβ(+) cell differentiation.
Conclusions:
- Laminin plays a critical role in regulating the stemness and differentiation of muscle-resident PDGFRβ(+) cells.
- Laminin represents a promising therapeutic target for muscular dystrophy treatment.
- Targeting laminin may offer an effective strategy for managing muscular dystrophy.
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