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Protective Role of Functionalized Single Walled Carbon Nanotubes Enhance Ex Vivo Expansion of Hematopoietic Stem and Progenitor Cells in Human Umbilical Cord Blood

Protective Role of Functionalized Single Walled Carbon Nanotubes Enhance Ex Vivo Expansion of Hematopoietic Stem and Progenitor Cells in Human Umbilical Cord Blood

Sudipto Bari, Pat Pak Yan Chu, Andrea Lim, Xiubo Fan, Florence Pik Hoon Gay, Ralph Milford Bunte, Tony Kiat Hon Lim, Shang Li, Gigi Ngar Chee Chiu, William Ying Khee Hwang

Nanomedicine. 2013 Nov;9(8):1304-16.

PMID: 23732300

Abstract:

In this study, carboxylic acid functionalized single walled carbon nanotubes (f-SWCNT-COOH) was shown to support the viability and ex vivo expansion of freeze-thawed, non-enriched hematopoietic stem and progenitor cells (HSPC) in human umbilical cord blood-mononucleated cells (UCB-MNC). Our in vitro experiments showed that f-SWCNT-COOH increased the viability of the CD45(+) cells even without cytokine stimulation. It also reduced mitochondrial superoxides and caspase activity in CD45(+) cells. f-SWCNT-COOH drastically reduced the proportions of CD45(-) cells in the non-enriched UCB-MNC. Phenotypic expression analysis and functional colony forming units (CFU) showed significant ex vivo expansion of HSPC, particularly of CD45(+)CD34(+)CD38(-) population and granulocyte-macrophage (GM) colonies, in f-SWCNT-COOH augmented cultures supplemented with basal cytokines. In vivo data suggested that f-SWCNT-COOH expanded UCB-MNC could repopulate immunodeficient mice models with minimal acute or sub-acute symptoms of graft-versus-host disease (GVHD) and f-SWCNT-COOH dependent toxicity.
From the clinical editor:
In this paper a novel method is presented by using single wall functionalized carbon nanotubes to enhance viability and ex vivo expansion of freeze-thawed, non-enriched hematopoietic stem and progenitor cells in human umbilical cord blood -mononucleated cells. Detailed data is presented about enhanced viability, including improved repopulation of immunodeficient mice models with minimal acute or sub-acute symptoms of graft-versus-host disease.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS71707	Carbon nanotube, single-walled, carboxylic acid functionalized			Price

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