Cartilage Tissue Engineering

March 6, 2013 updated by: Chin-Hung Chang

In this study, the investigators explored the hypothesis that osteoarthritic cartilage fragments can promote chondrogenesis of MSCs. Non-wearing parts of cartilage tissues were harvested from one osteoarthritic patient during the total knee arthroplasty surgery. Cartilage fragments and MSCs were wrapped into fibrin glue; and the constructs were implanted subcutaneously into nude mice.

Moreover, the investigators will collect the discard cartilage to develop an acellular cartilage ECM-derived scaffold in the joint replacement surgery. In addition, the investigators will harvest the redundant bone marrow from drilling or useless synovium during the surgery to separate the mesenchymal stem cells. Furthermore, these mesenchymal stem cells will be transfected with hTERT for rejuvenation and then will be labeled with fluorescent dye PKH26 for application of animal study. To sum up, the investigators plan to use human, natural, and discard materials from the joint replacement surgery to develop appropriate allograft for cartilage repair and hope that one day this ideal would be apply in clinical.

Study Overview

Status

Available

Conditions

Intervention / Treatment

Detailed Description

Extracellular matrix (ECM) is thought to participate significantly in guiding the differentiation process of mesenchymal stem cells (MSCs). In this study, we explored the hypothesis that osteoarthritic cartilage matrix can promote chondrogenesis of MSCs. Cartilage matrix was harvested from the health-like parts of osteoarthritic cartilage tissue. Cartilage fragments and MSCs were wrapped into fibrin glue; and the constructs were implanted subcutaneously into nude mice. Histological analysis showed a round and elongated cell appearance with positive Alcian blue staining of cartilage matrix formation in the constructs. However, the cells in fibrin glue only were condensed like MSCs in pellet culture. Immunohistochemical staining was abundantly positive for type II collagen in neo-cartilage regions of cartilage fragment-fibrin glue-MSC constructs, while the constructs without cartilage fragments were negative in staining for type II collagen. The gene expressions of type II collagen in the constructs with 60 mg fragments were significantly elevated after 4 weeks of implantation. Conversely, constructs without cartilage fragments failed to express type II collagen, which indicated that MSCs could not differentiate into a chondrogenic lineage. In conclusion, we demonstrated the effects of osteoarthritic cartilage matrix in promoting chondrogenic differentiation of MSCs. This was a favorable method without exogenous growth factors induction.

Study Type

Expanded Access

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

30 years to 70 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • 30-70 years old

Exclusion Criteria:

  • more than 70 years old

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Collaborators and Investigators

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Sponsor

Chin-Hung Chang

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

First Submitted

October 5, 2010

First Submitted That Met QC Criteria

February 22, 2011

First Posted (ESTIMATE)

February 23, 2011

Study Record Updates

Last Update Posted (ESTIMATE)

March 7, 2013

Last Update Submitted That Met QC Criteria

March 6, 2013

Last Verified

March 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 97022

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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