Mobilized Peripheral Blood Stem Cells are Pluripotent and Can Be Safely Harvested and Stored for Cartilage Repair

被引:4
|
作者
Anz, Adam W. [1 ,2 ]
Torres, Johnny [2 ]
Plummer, Hillary A. [2 ]
Jee, Caroline Siew-Yoke [5 ]
Dekker, Travis J. [3 ]
Johnson, Kevin B. [4 ]
Saw, Khay-Yong [5 ]
机构
[1] Andrews Inst Orthoped & Sports Med, Gulf Breeze, FL USA
[2] Andrews Res & Educ Fdn, 1020 Gulf Breeze Pkwy, Gulf Breeze, FL 32561 USA
[3] Eglin Air Force Base, Niceville, FL USA
[4] Pharma Knowledge, Greenville, NC USA
[5] Kuala Lumpur Sports Med Ctr, Kuala Lumpur, Malaysia
关键词
COLONY-STIMULATING FACTOR; FACTOR G-CSF; PROGENITOR CELLS; BONE-MARROW; ARTICULAR-CARTILAGE; HYALURONIC-ACID; IN-VITRO; COLLECTION; TRANSPLANTATION; CHONDROGENESIS;
D O I
10.1016/j.arthro.2021.04.036
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Purpose: The primary objective of this study was to reproduce and validate the harvest, processing and storage of peripheral blood stem cells for a subsequent cartilage repair trial, evaluating safety, reliability, and potential to produce viable, sterile stem cells. Methods: Ten healthy subjects (aged 19-44 years) received 3 consecutive daily doses of filgrastim followed by an apheresis harvest of mononuclear cells on a fourth day. In a clean room, the apheresis product was prepared for cryopreservation and processed into 4 mL aliquots. Sterility and qualification testing were performed pre-processing and post-processing at multiple time points out to 2 years. Eight samples were shipped internationally to validate cell transport potential. One sample from all participants was cultured to test proliferative potential with colony forming unit (CFU) assay. Five samples, from 5 participants were tested for differentiation potential, including chondrogenic, adipogenic, osteogenic, endoderm, and ectoderm assays. Results: Fresh aliquots contained an average of 532.9 +/- 166. x 10(6) total viable cells/4 mL vial and 2.1 +/- 1.0 x 10(6) CD34+ cells/4 mL vial. After processing for cryopreservation, the average cell count decreased to 331.3 +/- 79. x 10(6) total viable cells/4 mL vial and 1.5 +/- 0.7 x 10(6) CD34+ cells/4 mL vial CD34+ cells. Preprocessing viability averaged 99% and postprocessing 88%. Viability remained constant after cryopreservation at all subsequent time points. All sterility testing was negative. All samples showed proliferative potential, with average CFU count 301.4 +/- 63.9. All samples were pluripotent. Conclusions: Peripheral blood stem cells are pluripotent and can be safely harvested/stored with filgrastim, apheresis, clean-room processing, and cryopreservation. These cells can be stored for 2 years and shipped without loss of viability.
引用
收藏
页码:3347 / 3356
页数:10
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