Peptide aptamers: novel coatings for orthopaedic implants

Research output: Contribution to journalArticlepeer-review


  • Micah Kelly
  • Anuriti Aojula
  • Jenna O'neill
  • Zuzanna Trzińscka
  • Robert A.h. Scott
  • Felicity De Cogan


Current processes for coating titanium implants with ceramics involve very high energy techniques with associated high cost and disadvantages such as heterogeneity of the coatings, phase transformations and inability to coat complex structures. In order to address the above problems, we propose a biomimetic hydroxyapatite coating process with the use of peptides that can bind both on titanium surfaces and hydroxyapatite. The peptides enabled homogeneous coating of a titanium surface with hydroxyapatite. The hydroxyapatite–peptide sandwich coating showed no adverse effects on cell number or collagen deposition. This makes the sandwich coated titanium a good candidate for titanium implants used in orthopaedics and dentistry.


Original languageEnglish
Pages (from-to)84-93
JournalMaterials Science and Engineering C
Early online date21 Apr 2015
Publication statusPublished - 1 Sep 2015


  • Biomimetic peptide, Peptide coating, Titanium coating, Hydroxyapatite coating, Implant coating