MMP-2 contributes to the development of the mouse ventral prostate by impacting epithelial growth and morphogenesis

Authors

  • Alexandre Bruni-Cardoso,

    1. Department of Anatomy, Cell Biology, Physiology and Biophysics, State University of Campinas (UNICAMP), Campinas, SP, Brazil
    Search for more papers by this author
  • Conor C. Lynch,

    1. Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee
    2. Department of Orthopaedics and Rehabilitation, Vanderbilt University, Nashville, Tennessee
    Search for more papers by this author
  • Rafaela Rosa-Ribeiro,

    1. Department of Anatomy, Cell Biology, Physiology and Biophysics, State University of Campinas (UNICAMP), Campinas, SP, Brazil
    Search for more papers by this author
  • Lynn M. Matrisian,

    1. Department of Cancer Biology, Vanderbilt University, Nashville, Tennessee
    Search for more papers by this author
  • Hernandes F. Carvalho

    Corresponding author
    1. Department of Anatomy, Cell Biology, Physiology and Biophysics, State University of Campinas (UNICAMP), Campinas, SP, Brazil
    2. National Institute of Photonics Applied to Cell Biology (INFABIC), State University of Campinas (UNICAMP), Campinas, SP, Brazil
    • Department of Cell Biology – UNICAMP, CP 6109, 13083-863 Campinas SP, Brazil
    Search for more papers by this author

Abstract

Epithelial growth, branching, and canalization are important morphogenetic events of the rodent ventral prostate (VP) that take place during the first postnatal week. In this study, we evaluated the effect of knocking out MMP-2 (MMP-2−/−), by examining developmental and structural aspects of the VP in MMP-2−/− mice. Neonate (day 6) MMP-2−/− mice showed fewer epithelial tips, a lower epithelial cell proliferation rate, and also reticulin fiber accumulation. The VP of adult MMP-2−/− mice showed lower relative weight, smaller epithelial and smooth-muscle cell volume, and a larger amount of thicker reticulin fibers. No differences in cell proliferation or apoptotic index were noted between adult MMP-2−/− and wild-type mice. MMP-9 was found in the adult MMP-2−/−, but not in the wild-type. In conclusion, MMP-2 function is essential for the epithelial morphogenesis of the mouse VP, and expression of MMP-9 is not sufficient for acquisition of the normal adult histology. Developmental Dynamics 239:2386–2392, 2010. © 2010 Wiley-Liss, Inc.

Ancillary