In vitro extracellular matrix accumulation of nasal and articular chondrocytes for intervertebral disc repair. 2017

S Vedicherla, and C T Buckley
Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland; School of Medicine, Trinity College Dublin, Ireland.

Chondrocyte based regenerative therapies for intervertebral disc repair such as Autologous Disc Cell Transplantation (ADCT, CODON) and allogeneic juvenile chondrocyte implantation (NuQu®, ISTO Technologies) have demonstrated good outcomes in clinical trials. However concerns remain with the supply demand reconciliation and issues surrounding immunoreactivity which exist for allogeneic-type technologies. The use of stem cells is challenging due to high growth factor requirements, regulatory barriers and differentiation towards a stable phenotype. Therefore, there is a need to identify alternative non-disc cell sources for the development and clinical translation of next generation therapies for IVD regeneration. In this study, we compared Nasal Chondrocytes (NC) as a non-disc alternative chondrocyte source with Articular Chondrocytes (AC) in terms of cell yield, morphology, proliferation kinetics and ability to produce key extracellular matrix components under 5% and 20% oxygen conditions, with and without exogenous TGF-β supplementation. Results indicated that NC maintained proliferative capacity with high amounts of sGAG and lower collagen accumulation in the absence of TGF-β supplementation under 5% oxygen conditions. Importantly, osteogenesis and calcification was inhibited for NC when cultured in IVD-like microenvironmental conditions. The present study provides a rationale for the exploration of nasal chondrocytes as a promising, potent and clinically feasible autologous cell source for putative IVD repair strategies.

UI MeSH Term Description Entries
D007403 Intervertebral Disc Any of the 23 plates of fibrocartilage found between the bodies of adjacent VERTEBRAE. Disk, Intervertebral,Intervertebral Disk,Disc, Intervertebral,Discs, Intervertebral,Disks, Intervertebral,Intervertebral Discs,Intervertebral Disks
D002358 Cartilage, Articular A protective layer of firm, flexible cartilage over the articulating ends of bones. It provides a smooth surface for joint movement, protecting the ends of long bones from wear at points of contact. Articular Cartilage,Articular Cartilages,Cartilages, Articular
D002417 Cattle Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor. Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D005109 Extracellular Matrix A meshwork-like substance found within the extracellular space and in association with the basement membrane of the cell surface. It promotes cellular proliferation and provides a supporting structure to which cells or cell lysates in culture dishes adhere. Matrix, Extracellular,Extracellular Matrices,Matrices, Extracellular
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D044968 Regenerative Medicine A field of medicine concerned with developing and using strategies aimed at repair or replacement of damaged, diseased, or metabolically deficient organs, tissues, and cells via TISSUE ENGINEERING; CELL TRANSPLANTATION; and ARTIFICIAL ORGANS and BIOARTIFICIAL ORGANS and tissues. Medicine, Regenerative,Medicines, Regenerative,Regenerative Medicines
D055171 Nasal Cartilages Hyaline cartilages in the nose. There are five major nasal cartilages including two lateral, two alar, and one septal. Alar Nasal Cartilages,Lateral Nasal Cartilages,Septal Nasal Cartilage,Alar Nasal Cartilage,Cartilage, Alar Nasal,Cartilage, Lateral Nasal,Cartilage, Nasal,Cartilage, Septal Nasal,Cartilages, Alar Nasal,Cartilages, Lateral Nasal,Cartilages, Nasal,Cartilages, Septal Nasal,Lateral Nasal Cartilage,Nasal Cartilage,Nasal Cartilage, Alar,Nasal Cartilage, Lateral,Nasal Cartilage, Septal,Nasal Cartilages, Alar,Nasal Cartilages, Lateral,Nasal Cartilages, Septal,Septal Nasal Cartilages
D019902 Chondrocytes Polymorphic cells that form cartilage. Chondroblasts,Chondroblast,Chondrocyte

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