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Stem cells reverse disease in a model of Parkinson's disease

Date:
May 16, 2011
Source:
Journal of Clinical Investigation
Summary:
Researchers have compared the ability of cells derived from different types of human stem cell to reverse disease in a rat model of Parkinson disease and identified a stem cell population that they believe could be clinically relevant.
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A team of researchers -- led by Sang-Hun Lee, at Hanyang University, Republic of Korea, and Kwang-Soo Kim, at Harvard Medical School, Belmont, -- has now compared the ability of cells derived from different types of human stem cell to reverse disease in a rat model of Parkinson disease and identified a stem cell population that they believe could be clinically relevant.

Parkinson disease results from the progressive loss of a specific subpopulation of nerve cells. Current treatments provide only relief from the symptoms of the disease and cannot reverse the nerve cell loss. Stem cells are considered by many to be promising candidate sources of cells to reverse nerve cell loss in individuals with Parkinson disease through their ability to regenerate and repair diseased tissues.

There are two types of stem cell considered in this context: embryonic stem (ES) cells, which are derived from early embryos; and induced pluripotent stem (iPS) cells, which are derived by reprogramming cells of the body such that they have the ability to generate any cell type. In turn, cells of the body can be reprogrammed to become iPS cells in one of two ways: the reprogramming proteins can be transferred directly into the cells (protein-based iPS cells) or viruses can be used to deliver to the cells the genetic information necessary for producing the reprogramming proteins (virus-based iPS cell). Lee, Kim, and colleagues found several problems with cells derived from virus-based human iPS cells that precluded their use in the Parkinson disease model but found that nerve cells derived from protein-based human iPS cells reversed disease when transplanted into the brain of rats modeling Parkinson disease. They therefore conclude that protein-based human iPS cells could be used in the treatment of individuals with Parkinson disease.


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The above post is reprinted from materials provided by Journal of Clinical Investigation. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yong-Hee Rhee, Ji-Yun Ko, Mi-Yoon Chang, Sang-Hoon Yi, Dohoon Kim, Chun-Hyung Kim, Jae-Won Shim, A-Young Jo, Byung-Woo Kim, Hyunsu Lee, Suk-Ho Lee, Wonhee Suh, Chang-Hwan Park, Hyun-Chul Koh, Yong-Sung Lee, Robert Lanza, Kwang-Soo Kim, Sang-Hun Lee. Protein-based human iPS cells efficiently generate functional dopamine neurons and can treat a rat model of Parkinson disease. Journal of Clinical Investigation, 2011; DOI: 10.1172/JCI45794

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Journal of Clinical Investigation. "Stem cells reverse disease in a model of Parkinson's disease." ScienceDaily. ScienceDaily, 16 May 2011. <www.sciencedaily.com/releases/2011/05/110516121419.htm>.
Journal of Clinical Investigation. (2011, May 16). Stem cells reverse disease in a model of Parkinson's disease. ScienceDaily. Retrieved July 31, 2015 from www.sciencedaily.com/releases/2011/05/110516121419.htm
Journal of Clinical Investigation. "Stem cells reverse disease in a model of Parkinson's disease." ScienceDaily. www.sciencedaily.com/releases/2011/05/110516121419.htm (accessed July 31, 2015).

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