Biomimetic biomaterial scaffolds for bone and cartilage regeneration

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Regeneration is in part recapitulation of embryonic development and morphogenesis. Morphogenesis is the developmental cascade of pattern formation, body plan establishment and differentiation of tissues including bone and cartilage. Regenerative medicine is the science of design of tissues for functional restoration of damaged tissues. The three key elements of regenerative medicine are morphogens, stem cells and scaffolds of biomaterials. Biomaterials that mimic the tissue of interest will be most optimal for regeneration. Bone has considerable potential for regeneration. Yet, cartilage on adjacent tissue is feeble in the regenerative capacity. We have systematically investigated bone and cartilage regeneration with special focus on biomaterial properties including morphogens. Morphogens direct the lineage and final fate of responding stem cells. Morphogens include bone morphogenetic proteins (BMPs), hedgehogs, fibroblast growth factors (FGFs) and members of Wnts family. BMPs are the premier signals for bone and cartilage differentiation. The BMP family includes BMPs, cartilage derived morphogenetic proteins (BMPs) and growth/differentiation factors (GDFs). CDMPs 1-3 are also known as GDFs 5-7, and they play critical role in joint formation. Morphogens bind to biomaterials of the extracellular matrix such as collagens, proteoglycans and glycosaminoglycans. BMPs bind to collagens I and IV and heparin. BMPs bound to collagen is a bioactive biomaterial scaffold that can induce bone and cartilage. BMPs were purified from extracellular matrix of demineralized bone. The dissociative extraction and reconstitution of BMPs from collagens in 1981 established the basic concept of the biomimetic biomaterial scaffold and its role in regeneration and tissue engineering. The optimal scaffolds for bone regeneration are collagens and hydroxyapatite. The ideal scaffold for cartilage is materials with viscoelastic and hydrodynamic properties that mimic extracellular matrix of cartilage. The integration of morphogens in the optimal biomaterial scaffold to permit optimal rate of release is the key challenge for cartilage regeneration.

Original languageEnglish (US)
Title of host publicationTransactions - 7th World Biomaterials Congress
Pages199
Number of pages1
StatePublished - 2004
EventTransactions - 7th World Biomaterials Congress - Sydney, Australia
Duration: May 17 2004May 21 2004

Other

OtherTransactions - 7th World Biomaterials Congress
CountryAustralia
CitySydney
Period5/17/045/21/04

Fingerprint

Cartilage
Biomimetics
Scaffolds (biology)
Biomaterials
Bone
Proteins
Collagen
Tissue
Stem cells
Scaffolds
Fibroblasts
Hydroxyapatite
Tissue engineering
Restoration

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Reddi, A. H. (2004). Biomimetic biomaterial scaffolds for bone and cartilage regeneration. In Transactions - 7th World Biomaterials Congress (pp. 199)

Biomimetic biomaterial scaffolds for bone and cartilage regeneration. / Reddi, A Hari.

Transactions - 7th World Biomaterials Congress. 2004. p. 199.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reddi, AH 2004, Biomimetic biomaterial scaffolds for bone and cartilage regeneration. in Transactions - 7th World Biomaterials Congress. pp. 199, Transactions - 7th World Biomaterials Congress, Sydney, Australia, 5/17/04.
Reddi AH. Biomimetic biomaterial scaffolds for bone and cartilage regeneration. In Transactions - 7th World Biomaterials Congress. 2004. p. 199
Reddi, A Hari. / Biomimetic biomaterial scaffolds for bone and cartilage regeneration. Transactions - 7th World Biomaterials Congress. 2004. pp. 199
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