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Related Experiment Videos

BMP7 acts in murine lens placode development.

S Wawersik1, P Purcell, M Rauchman

  • 1Division of Genetics, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02115, USA.

Developmental Biology
|March 2, 1999
PubMed
Summary
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Bone morphogenetic protein 7 (BMP7) is crucial for early lens development in mice. Its absence impairs lens placode formation, highlighting its role in eye development and genetic pathways.

Area of Science:

  • Developmental Biology
  • Genetics
  • Ophthalmology

Background:

  • Bmp7 gene inactivation in mice causes late-onset, variable eye defects.
  • The genetic background influences the severity of Bmp7 mutant phenotypes.

Purpose of the Study:

  • Investigate the role of Bmp7 in early lens development.
  • Determine the genetic pathway involving Bmp7 in lens placode formation.

Main Methods:

  • Immunolocalization of BMP7 protein in mouse embryos.
  • In vitro culture system with BMP7 antagonists.
  • Analysis of lens placode-specific marker expression in Bmp7 and Pax6 mutant embryos.

Main Results:

  • BMP7 protein is present in head ectoderm during lens placode induction.

Related Experiment Videos

  • BMP7 antagonists inhibit lens formation in vitro.
  • Bmp7 mutant embryos show loss of Pax6 expression, while Pax6 mutants maintain Bmp7 expression.
  • Secreted Frizzled Related Protein-2 (sFRP-2) is absent in Pax6 mutants but present in Bmp7 mutants.

    • Conclusions:

    • Bmp7 plays a critical role in early lens development and placode formation.
    • Bmp7 may function upstream of Pax6 to regulate lens placode induction.
    • Bmp7 is required for maintaining Pax6 expression during preplacodal lens development.