Modulation of pro- and anti-apoptotic genes in lymphocytes exposed to bone cements

Donatella Granchi, Gabriela Ciapetti, Federica Filippini, Susanna Stea, [No Value] Elisabettacenni, Arturo Pizzoferrato, Aldo Toni

Research output: Contribution to journalArticlepeer-review

Abstract

The ability of bone cements to modify the apoptotic program in activated immune cells and the mechanisms by which they act were evaluated. Mononuclear cells were collected from healthy individuals, cultured for 4 and 24 h with phytohemoagglutinina-P and cement extracts and then tested to assess: (a) cell viability; (b) early apoptotic events, by Annexin V/propidium iodide staining; and (c) the expression of pro- (p53, c-myc, ICE) and anti-apoptotic (bcl-2) genes. After 4 h three cements were able to increase significantly the percentage of apoptotic cells, while after 24 h no differences were found. The proportion of dead cells was not significantly changed at either culture time. The simultaneous expression of both pro-apoptotic (ICE, c-myc, p53) and anti-apoptotic genes (bcl-2) was investigated only with regard to the materials which induced significant changes in apoptosis: two cements induced the p53 expression, while the third down-regulated bcl-2. As apoptosis regulates the balance of immune response, the authors recommend that the interaction between materials and immune cells should be assessed, so that the use of pro-apoptotic materials may be avoided in patients with immune defects.

Original languageEnglish
Pages (from-to)633-646
Number of pages14
JournalJournal of Biomaterials Science, Polymer Edition
Volume11
Issue number6
Publication statusPublished - 2000

Keywords

  • Apoptosis
  • Bcl-2
  • Bone cement
  • C-myc
  • ICE
  • Immune system
  • P53

ASJC Scopus subject areas

  • Biophysics

Fingerprint Dive into the research topics of 'Modulation of pro- and anti-apoptotic genes in lymphocytes exposed to bone cements'. Together they form a unique fingerprint.

Cite this