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Cutting edge: bone morphogenetic protein antagonists Drm/Gremlin and Dan interact with Slits and act as negative

Bo Chen1, Donald G Blair, Sergei Plisov

  • 1Basic Research Laboratory, Center for Cancer Research, National Cancer Institute, 1050 Boyles Street, Frederick, MD 21702, USA.

Journal of Immunology (Baltimore, Md. : 1950)
|November 6, 2004
PubMed

Insights

Gremlin (Drm) and Dan proteins interact with Slit proteins and inhibit monocyte migration. This study reveals a new role for Drm and Dan in regulating cell movement, impacting areas like development and disease.

Area of Science:

  • Molecular and Cellular Biology
  • Developmental Biology
  • Immunology

Background:

  • Gremlin (Drm) and Dan are secreted antagonists of bone morphogenic proteins.
  • These proteins are implicated in early development, tumorigenesis, and kidney disease.

Purpose of the Study:

  • To investigate the interaction of Drm and Dan with Slit proteins.
  • To determine the role of Drm and Dan in monocyte migration.

Main Methods:

  • Co-immunoprecipitation assays to study protein interactions.
  • Monocyte chemotaxis assays using SDF-1alpha and fMLP as chemoattractants.

Main Results:

  • Drm and Dan physically and functionally interact with Slit1 and Slit2.
  • Drm binding to Slits is dependent on glycosylation.
  • Drm and Dan inhibit monocyte migration induced by SDF-1alpha or fMLP.
  • Dan's inhibition of chemotaxis does not involve blocking SDF-1alpha receptor binding.

Conclusions:

  • Drm and Dan interact with Slit proteins.
  • Drm and Dan act as inhibitors of monocyte chemotaxis.
  • These findings uncover a novel biological function for Drm and Dan proteins.

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