Brain Sci. 2014, 4(1), 202-219; doi:10.3390/brainsci4010202

Use of Genetically Altered Stem Cells for the Treatment of Huntington’s Disease

1email, 1,2email and 1,3,* email
Received: 2 October 2013; in revised form: 18 February 2014 / Accepted: 19 February 2014 / Published: 24 March 2014
(This article belongs to the Special Issue Molecular Mechanisms Underlying Huntington's Disease)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Transplantation of stem cells for the treatment of Huntington’s disease (HD) garnered much attention prior to the turn of the century. Several studies using mesenchymal stem cells (MSCs) have indicated that these cells have enormous therapeutic potential in HD and other disorders. Advantages of using MSCs for cell therapies include their ease of isolation, rapid propagation in culture, and favorable immunomodulatory profiles. However, the lack of consistent neuronal differentiation of transplanted MSCs has limited their therapeutic efficacy to slowing the progression of HD-like symptoms in animal models of HD. The use of MSCs which have been genetically altered to overexpress brain derived neurotrophic factor to enhance support of surviving cells in a rodent model of HD provides proof-of-principle that these cells may provide such prophylactic benefits. New techniques that may prove useful for cell replacement therapies in HD include the use of genetically altering fate-restricted cells to produce induced pluripotent stem cells (iPSCs). These iPSCs appear to have certain advantages over the use of embryonic stem cells, including being readily available, easy to obtain, less evidence of tumor formation, and a reduced immune response following their transplantation. Recently, transplants of iPSCs have shown to differentiate into region-specific neurons in an animal model of HD. The overall successes of using genetically altered stem cells for reducing neuropathological and behavioral deficits in rodent models of HD suggest that these approaches have considerable potential for clinical use. However, the choice of what type of genetically altered stem cell to use for transplantation is dependent on the stage of HD and whether the end-goal is preserving endogenous neurons in early-stage HD, or replacing the lost neurons in late-stage HD. This review will discuss the current state of stem cell technology for treating the different stages of HD and possible future directions for stem-cell therapy in HD.
Keywords: Huntington’s disease; mesenchymal stem cells; induced pluripotent stem cells; brain derived neurotrophic factor; cell therapy; genetic engineering
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MDPI and ACS Style

Crane, A.T.; Rossignol, J.; Dunbar, G.L. Use of Genetically Altered Stem Cells for the Treatment of Huntington’s Disease. Brain Sci. 2014, 4, 202-219.

AMA Style

Crane AT, Rossignol J, Dunbar GL. Use of Genetically Altered Stem Cells for the Treatment of Huntington’s Disease. Brain Sciences. 2014; 4(1):202-219.

Chicago/Turabian Style

Crane, Andrew T.; Rossignol, Julien; Dunbar, Gary L. 2014. "Use of Genetically Altered Stem Cells for the Treatment of Huntington’s Disease." Brain Sci. 4, no. 1: 202-219.

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