Abstract:
BACKGROUND AIMS:The aim was to evaluate cartilage regeneration in animal models involving induced knee joint damage. Through cell-mediated gene therapy methods, a cell mixture comprising a 3:1 ratio of genetically unmodified human chondrocytes and transforming growth factor beta-1 (TGF-beta1)-secreting human chondrocytes (TG-C), generated via retroviral transduction, resulted in successful cartilage proliferation in damaged regions. METHODS:Non-clinical toxicology assessments for efficacy, biodistribution and local/systemic toxicity of single intra-articular administration of the cell mixture in mice, rabbits and goats was conducted. RESULTS:Administration of the mixture was tolerated well in all of the species. There was evidence of cartilage proliferation in rabbits and goats. As an additional precautionary step, the efficacy of TGF-beta1 secretion in irradiated human chondrocytes was also demonstrated. CONCLUSIONS:Four studies in rabbits and goats demonstrated the safety and efficacy of TG-C following direct intra-articular administration in animal models involving induced knee joint damage. Based on these pre-clinical studies authorization has been received from the USA Food and Drug Administration (FDA) to proceed with an initial phase I clinical study of TG-C for degenerative arthritis.
journal_name
Cytotherapyjournal_title
Cytotherapyauthors
Noh MJ,Copeland RO,Yi Y,Choi KB,Meschter C,Hwang S,Lim CL,Yip V,Hyun JP,Lee HY,Lee KHdoi
10.3109/14653240903470639subject
Has Abstractpub_date
2010-05-01 00:00:00pages
384-93issue
3eissn
1465-3249issn
1477-2566pii
S1465-3249(10)70400-Xjournal_volume
12pub_type
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