Type III TGFβ receptor and Src direct hyaluronan-mediated invasive cell motility

Patrick Allison, Daniella Espiritu, Joey V. Barnett, Todd D Camenisch

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

During embryogenesis, the epicardium undergoes proliferation, migration, and differentiation into several cardiac cell types which contribute to the coronary vessels. This process requires epithelial to mesenchymal transition (EMT) and directed cellular invasion. The Type III Transforming Growth Factor-beta Receptor (TGFβR3) is required for epicardial cell invasion and coronary vessel development. Using primary epicardial cells derived from Tgfbr3<sup>+/+</sup> and Tgfbr3<sup>-/-</sup> mouse embryos, high-molecular weight hyaluronan (HMWHA) stimulated cellular invasion and filamentous (f-actin) polymerization are detected in Tgfbr3<sup>+/+</sup> cells, but not in Tgfbr3<sup>-/-</sup> cells. Furthermore, HMWHA-stimulated cellular invasion and f-actin polymerization in Tgfbr3<sup>+/+</sup> epicardial cells are dependent on Src kinase. Src activation in HMWHA-stimulated Tgfbr3<sup>-/-</sup> epicardial cells is not detected in response to HMWHA. RhoA and Rac1 also fail to activate in response to HMWHA in Tgfbr3<sup>-/-</sup> cells. These events coincide with defective f-actin formation and deficient cellular invasion. Finally, a T841A activating substitution in TGFβR3 drives ligand-independent Src activation. Collectively, these data define a TGFβR3-Src-RhoA/Rac1 pathway that is essential for hyaluronan-directed cell invasion in epicardial cells.

Original languageEnglish (US)
Pages (from-to)453-459
Number of pages7
JournalCellular Signalling
Volume27
Issue number1
DOIs
StatePublished - 2015

Fingerprint

Hyaluronic Acid
Cell Movement
Molecular Weight
Actins
Polymerization
Coronary Vessels
Epithelial-Mesenchymal Transition
src-Family Kinases
Pericardium
Embryonic Development
Embryonic Structures
Ligands

Keywords

  • EMT
  • Epicardium
  • Hyaluronan
  • Src kinase
  • Type III TGFβ receptor

ASJC Scopus subject areas

  • Cell Biology

Cite this

Type III TGFβ receptor and Src direct hyaluronan-mediated invasive cell motility. / Allison, Patrick; Espiritu, Daniella; Barnett, Joey V.; Camenisch, Todd D.

In: Cellular Signalling, Vol. 27, No. 1, 2015, p. 453-459.

Research output: Contribution to journalArticle

Allison, Patrick ; Espiritu, Daniella ; Barnett, Joey V. ; Camenisch, Todd D. / Type III TGFβ receptor and Src direct hyaluronan-mediated invasive cell motility. In: Cellular Signalling. 2015 ; Vol. 27, No. 1. pp. 453-459.
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