Adsorption of Laminin on Hydroxyapatite and Alumina and the MC3T3-E1 Cell Response

Hiroka Fujita, Tada Aki Kudo, Hiroyasu Kanetaka, Toshiki Miyazaki, Masami Hashimoto, Masakazu Kawashita

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Artificial hydroxyapatite (HAp) is osteoconductive, but the mechanism is still unclear. It is likely that some serum proteins are adsorbed onto HAp and influence its osteoconductivity. We investigated the adsorption behavior of laminin (LN), which was isolated from murine Engelbreth-Holm-Swarm sarcoma, onto HAp and compared it with nonosteoconductive alpha-type alumina (α-Al2O3). Cell adhesion, spreading, and proliferation on native and LN-adsorbed discs of HAp or α-Al2O3 were examined using murine MC3T3-E1 osteoblastic cells. A larger amount of LN adsorbed onto HAp than α-Al2O3 despite the electrostatic repulsion between LN and HAp, suggesting the specific adsorption of LN onto HAp. The LN adsorbed onto HAp remarkably enhanced initial attachment and spreading of MC3T3-E1 cells, but subsequent proliferation of MC3T3-E1 cells was influenced by the type of material rather than LN adsorption. These fundamental findings imply that LN adsorbed on HAp could trigger osteoconductivity in vivo, aiding in the development of novel biomaterials that specifically adsorb LN and effectively enhance cell attachment and spreading.

Original languageEnglish
Pages (from-to)1162-1168
Number of pages7
JournalACS Biomaterials Science and Engineering
Volume2
Issue number7
DOIs
Publication statusPublished - 2016 Jul 11

Keywords

  • MC3T3-E1
  • adsorption
  • bioactivity
  • hydroxyapatite
  • laminin
  • osteoconductivity
  • α-alumina

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Adsorption of Laminin on Hydroxyapatite and Alumina and the MC3T3-E1 Cell Response'. Together they form a unique fingerprint.

Cite this