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Updated: Jun 3, 2026
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A Pipeline to Investigate the Structures and Signaling Pathways of Sphingosine 1-Phosphate Receptors
Published on: June 8, 2022
Sphingosine-1-Phosphate Receptor 1 Regulates Competition Dependent Astrocyte Morphogenesis and Tiling in Murine
Jean Patrick M Gonzales1, Connor Tuck1, Surya Chandra Rao Thumu1
1Department of Cellular Molecular and Genetic Medicine, School of Medicine and the Massey Comprehensive Cancer Center, Virginia Commonwealth University, Richmond, Virginia, USA.
Glia
|June 2, 2026
Summary
Sphingosine-1-phosphate receptor 1 (S1PR1) regulates astrocyte development and tiling in the brain. This lipid signaling receptor is crucial for astrocyte morphogenesis and establishing non-overlapping territories in the developing mammalian brain.
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Astrocytes are vital glial cells maintaining brain homeostasis through complex morphologies.
- Astrocyte morphology and tiling are regulated by neuronal interactions but mechanisms remain unclear.
- Previous work identified sphingosine-1-phosphate receptor 1 (S1PR1) in neuronal contact-dependent astrocyte morphogenesis.
Purpose of the Study:
- To investigate the role of S1PR1 in astrocyte morphogenesis and tiling in vivo.
- To elucidate the signaling pathways regulating S1PR1 expression in astrocytes.
Main Methods:
- Generated astrocyte-specific S1PR1 knockout mouse models.
- Utilized adeno-associated viral labeling techniques.
- Employed human astrocyte-mouse neuron co-culture systems.
Main Results:
- Confirmed S1PR1 regulates astrocyte morphogenesis and tiling in vivo.
- Demonstrated S1PR1 is essential for competition-driven astrocyte tiling in the developing brain.
- Identified JAK-STAT3 signaling as a regulator of neuronal contact-induced S1PR1 expression.
Conclusions:
- Sphingosine-1-phosphate receptor 1 (S1PR1) is a key regulator of astrocyte morphogenesis and tiling.
- Lipid signaling via S1PR1 plays a critical role in establishing astrocyte territories in the developing brain.
- JAK-STAT3 signaling mediates neuronal influence on S1PR1 expression, impacting astrocyte development.
