TY - JOUR
T1 - The effect of selected growth factors on human anterior cruciate ligament cell interactions with a three-dimensional collagen-GAG scaffold
AU - Murray, M. Meaney
AU - Rice, K.
AU - Wright, R. J.
AU - Spector, M.
N1 - Funding Information:
The authors wish to acknowledge Sandra Zapatka-Taylor for the preparation of the histologic sections. This work was supported by the National Institute of Arthrits and Musculoskeletal and Skin Diseases, a part of the National Institutes of Health, Grant number AR 46356-01.
PY - 2003
Y1 - 2003
N2 - Our work focuses on development of a collagen-glycosamimoglycan (CG) scaffold to facilitate ligament healing in the gap between the ruptured ends of the human anterior cruciate ligament (ACL). In the present investigation, we evaluated the effects of selected growth factors on human ACL cell responses important in tissue regeneration, namely cell migration, proliferation, collagen production, and expression of α-smooth muscle actin (SMA). Methods: Explants from six human ACLs were cultured on top of a CG scaffold. Culture conditions were with either 2% FBS (control), or 2% FBS supplemented with TGF-β1, PDGF-AB, EGF, or FGF-2. Histologic cell distribution, total DNA content, proliferation rate, rate of collagen synthesis, scaffold diameter and percentage of SMA positive cells were determined at two, three and four weeks. Results: The addition of TGF-β1 to the culture medium resulted in increased cell number, increased collagen production and increased expression of SMA within the scaffold. Supplementation with PDGF-AB resulted in increased cell proliferation rates within the scaffold and increased collagen production. The addition of FGF-2 resulted in increased cell proliferation rates and slowed rates of scaffold shrinkage when compared with the control group. Discussion: This work suggests that certain growth factors can alter the biologic functions of human ACL cells in a CG scaffold implanted as a bridge at the site of an ACL rupture. Based on these findings, the addition of selected growth factors to an implantable CG scaffold may facilitate ligament healing in the gap between the ruptured ends of the human ACL.
AB - Our work focuses on development of a collagen-glycosamimoglycan (CG) scaffold to facilitate ligament healing in the gap between the ruptured ends of the human anterior cruciate ligament (ACL). In the present investigation, we evaluated the effects of selected growth factors on human ACL cell responses important in tissue regeneration, namely cell migration, proliferation, collagen production, and expression of α-smooth muscle actin (SMA). Methods: Explants from six human ACLs were cultured on top of a CG scaffold. Culture conditions were with either 2% FBS (control), or 2% FBS supplemented with TGF-β1, PDGF-AB, EGF, or FGF-2. Histologic cell distribution, total DNA content, proliferation rate, rate of collagen synthesis, scaffold diameter and percentage of SMA positive cells were determined at two, three and four weeks. Results: The addition of TGF-β1 to the culture medium resulted in increased cell number, increased collagen production and increased expression of SMA within the scaffold. Supplementation with PDGF-AB resulted in increased cell proliferation rates within the scaffold and increased collagen production. The addition of FGF-2 resulted in increased cell proliferation rates and slowed rates of scaffold shrinkage when compared with the control group. Discussion: This work suggests that certain growth factors can alter the biologic functions of human ACL cells in a CG scaffold implanted as a bridge at the site of an ACL rupture. Based on these findings, the addition of selected growth factors to an implantable CG scaffold may facilitate ligament healing in the gap between the ruptured ends of the human ACL.
UR - http://www.scopus.com/inward/record.url?scp=0037229235&partnerID=8YFLogxK
U2 - 10.1016/S0736-0266(02)00142-0
DO - 10.1016/S0736-0266(02)00142-0
M3 - Article
C2 - 12568954
AN - SCOPUS:0037229235
SN - 0736-0266
VL - 21
SP - 238
EP - 244
JO - Journal of Orthopaedic Research
JF - Journal of Orthopaedic Research
IS - 2
ER -