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Iranian Journal of Basic Medical Sciences، جلد ۱۶، شماره ۱۰، صفحات ۱۰۷۵-۱۰۸۷
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عنوان انگلیسی Comparison of the Ex Vivo Expansion of UCB-Derived CD34+ in 3D DBM/MBA Scaffolds with USSC as a Feeder Layer
چکیده انگلیسی مقاله Objective(s): Ex vivo expansion of hematopoitic stem cells is an alternative way to increase umbilical cord blood (UCB)-CD34+ cells for bone marrow transplantation. For this purpose demineralized bone matrix (DBM) and mineralized bone allograft (MBA) as two scaffolds based on bone matrix and stem cell niche, were simultaneously used to enhance the effect of human mesenchymal progenitor cells (MPCs) - unrestricted somatic stem cells (USSCs) - as a feeder layer. Materials and Methods: USSCs were isolated and characterized by morphological and immunological analysis then seeded on both scaffolds as a feeder layer. UCB-CD34+ were isolated by MACS method and were co-culture expanded by USSC in 3D and 2D environments. After 3 weeks expansion, cells were counted and were assessed by karyotype, flow cytometry, clonogenic activity, and long-term culture-initiating cells (LTC-IC). Results: Co-culture expansion in DBM and MBA was 29.22-fold and 27.77-fold, no significant differences in colony and LTC-IC were obtained. Maximum number of colonies belonged to the day 14 with the 73% CFU-GM (Colony Forming Unit- Granulocyte/Macrophage) in contrast to the day 0 which was BFU-E/CFU-E (Burst/Colony Forming Unit-Erythroid). Flow cytometry indicated that the percentage of CD34+ marker was decreased in USSC co-culture and the highest percentage was observed in simple 2D culture. Conclusion: Because of acid extraction in the DBM production process, mineral materials were removed and the protein background that was more flexible was presented. Therefore these results suggest that USSC-DBM can be a suitable ex vivo mimicry niche by intensifying of surface/volume ratio and supporting the stem cell differentiation and expansion.
کلیدواژه‌های انگلیسی مقاله DBM Ex vivo expansion MBA scaffold UCB-CD34+ USSC cells
نویسندگان مقاله زهرا سادات هاشمی | zahra sadat hashemi
department of medical biotechnology, faculty of medical sciences, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

مهدی فروزنده مقدم | mahdi forouzandeh moghadam
department of medical biotechnology, faculty of medical sciences, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

مسعود سلیمانی | masoud soleimani
department of hematology, faculty of medical sciences, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

نشانی اینترنتی http://ijbms.mums.ac.ir/article_1870.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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