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Open Access Highly Accessed Research

Safety evaluation of allogeneic umbilical cord blood mononuclear cell therapy for degenerative conditions

Wan-Zhang Yang1, Yun Zhang2, Fang Wu1, Wei-Ping Min3, Boris Minev4, Min Zhang1, Xiao-Ling Luo2, Famela Ramos5, Thomas E Ichim5, Neil H Riordan5 and Xiang Hu2*

Author Affiliations

1 Nanshan Affiliated Hospital of Guangdong Medical College, Shenzhen, China

2 Shenzhen Beike Cell Engineering Research Institute, Shenzhen, China

3 Department of Surgery, University of Western Ontario, London, Ontario, Canada

4 Department of Medicine, Division of Neurosurgery, University of California San Diego, San Diego, CA, USA

5 Medistem Inc, San Diego, CA, USA

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Journal of Translational Medicine 2010, 8:75  doi:10.1186/1479-5876-8-75

Published: 3 August 2010

Abstract

Background

The current paradigm for cord blood transplantation is that HLA matching and immune suppression are strictly required to prevent graft versus host disease (GVHD). Immunological arguments and historical examples have been made that the use of cord blood for non-hematopoietic activities such as growth factor production, stimulation of angiogenesis, and immune modulation may not require matching or immune suppression.

Methods

114 patients suffering from non-hematopoietic degenerative conditions were treated with non-matched, allogeneic cord blood. Doses of 1-3 × 107 cord blood mononuclear cells per treatment, with 4-5 treatments both intrathecal and intravenously were performed. Adverse events and hematological, immunological, and biochemical parameters were analyzed for safety evaluation.

Results

No serious adverse effects were reported. Hematological, immunological, and biochemical parameters did not deviate from normal ranges as a result of therapy.

Conclusion

The current hematology-based paradigm of need for matching and immune suppression needs to be revisited when cord blood is used for non-hematopoietic regenerative purposes in immune competent recipients.