These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Apoptosis and autophagy induced by TGF-B1 in bovine mammary epithelial BME-UV1 cells.
    Author: Gajewska M, Gajkowska B, Motyl T.
    Journal: J Physiol Pharmacol; 2005 Jun; 56 Suppl 3():143-57. PubMed ID: 16077200.
    Abstract:
    Mammary gland growth and involution is based on a dynamic equilibrium between proliferation and apoptosis of mammary gland epithelial cells (MEC). TGF-beta1 is an important antiproliferative and apoptogenic factor for mammary gland epithelial cells, acting in auto/paracrine matter and thus considered an important local regulator of mammary tissue involution. So far the studies on mammary gland involution concerned only apoptosis as a type I of MEC programmed cell death (PCD). Autophagy is known to be type II of PCD and this paper is the first, supporting evidence for the TGF-beta1-induced autophagy in bovine mammary epithelial cell line BME-UV1, as a distinct to apoptosis type of PCD. Laser scanning cytometry and confocal microscopy were used for analysis of MAP1 LC3 and Beclin 1 expression - two proteins considered being the most reliable biochemical markers of autophagy. The significant increase of MAP1 LC3 and Beclin 1 expression in cells treated with TGF-beta1 (2 ng/ml) was observed. Ultrastructural observation in electron microscopy revealed that autophagy is not only alternative, but also complementary to apoptosis type of cell death in TGF-beta1-treated bovine MEC. It was manifested by typical morphological features of apoptosis (cell shrinkage, margination and condensation of chromatin) and autophagy (autophagosomes, autophagic vacuoles) in the same cell.
    [Abstract] [Full Text] [Related] [New Search]