Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (31): 4956-4963.doi: 10.12307/2021.136

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Treatment of knee osteoarthritis with human umbilical cord-derived mesenchymal stem cells combined with sodium hyaluronate injection

Cui Xiaoyan   

  1. Shanghai Best Year Biotechnology Co., Ltd., Shanghai 201615, China
  • Received:2020-05-10 Revised:2020-05-14 Accepted:2020-09-05 Online:2021-11-08 Published:2021-04-25
  • About author:Cui Xiaoyan, MD, Engineer, Shanghai Best Year Biotechnology Co., Ltd., Shanghai 201615, China

Abstract: BACKGROUND: Knee osteoarthritis seriously affects the living quality of patients and there is still no optimal treatment.
OBJECTIVE: To evaluate the efficacy and safety of human umbilical cord-derived mesenchymal stem cells combined with hyaluronic acid on the treatment of knee osteoarthritis.
METHODS:  (1) Cytological experiments were carried out to observe the effect of human umbilical cord-derived mesenchymal stem cells on lymphocyte proliferation and proportion of regulatory T cells. (2) The effects of premixed sodium hyaluronate on adipogenesis and chondrogenesis of human umbilical cord-derived mesenchymal stem cells were observed by oil red O staining and alcian blue staining. (3) Rabbit osteoarthritis was induced surgically by anterior cruciate ligament transection and medial meniscectomy of right knee joints. The intra-articular injection was given at 6, 9 and 12 weeks after surgery of human umbilical cord-derived mesenchymal stem cells, sodium hyaluronate injection, umbilical cord-derived mesenchymal stem cells combined with sodium hyaluronate injection. All rabbits were sacrificed at 16 weeks after surgery. The specific FOXP2 gene was measured in the heart, liver, spleen, lung, kidney, brain, muscles around the joint cavity, and knee joint with qPCR method. The morphological, histological and immunohistochemical analyses were carried out to detect the cartilage repair of femoral condyles. 
RESULTS AND CONCLUSION: (1) Human umbilical cord-derived mesenchymal stem cells suppressed T lymphocyte proliferation and upregulated proportion of regulatory T cells. (2) Human umbilical cord-derived mesenchymal stem cells premixed with sodium hyaluronate still retained the property of adipogenesis and chondrogenesis. (3) At 16 weeks after treatment, the human specific gene FOXP2 was all negative in the heart, liver, spleen, lung, kidney, brain and muscles around the joint cavity of rabbits. (4) The articular surface of human umbilical cord-derived mesenchymal stem cells + sodium hyaluronate group was flat and smooth, and the ICRS score was significantly higher than that of the sodium hyaluronate group. Hematoxylin-eosin staining results showed that cartilage thickness was increased and the Pineda score of human umbilical cord-derived mesenchymal stem cells + sodium hyaluronate group was significantly lower than that of the sodium hyaluronate group and the human umbilical cord-derived mesenchymal stem cells group. The whole cartilage layer of human umbilical cord-derived mesenchymal stem cells + sodium hyaluronate group contained more proteoglycans. The OARSI score of human umbilical cord-derived mesenchymal stem cells + sodium hyaluronate group was significantly lower than that of the sodium hyaluronate group and the human umbilical cord-derived mesenchymal stem cells group. Immunohistochemical analysis showed that the expression of type II collagen in articular cartilage was increased and the expression of matrix metalloproteinase-13 was decreased. (5) The results indicate that human umbilical cord-derived mesenchymal stem cells combined with sodium hyaluronate treatment were superior to either sodium hyaluronate treatment alone or human umbilical cord-derived mesenchymal stem cells treatment alone in articular cartilage repair and there was no significant adverse reaction.

Key words: stem cells, umbilical cord-derived mesenchymal stem cells, sodium hyaluronate, osteoarthritis, knee, cartilage, rabbit

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