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      Metformin induced expression of Hsp60 in human THP-1 monocyte cells

      Tsuei, An-Chi; Martinus, Ryan Dennis
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      2012 tsuei martinus Cell Stress and Chaperones.pdf
      Published version, 388.2Kb
      DOI
       10.1007/s12192-011-0282-6
      Link
       www.springerlink.com
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      Tsuei, A.-C. & Martinus, R.D. (2011). Metformin induced expression of Hsp60 in human THP-1 monocyte cells. Cell Stress and Chaperones, published online 16 July 2011.
      Permanent Research Commons link: https://hdl.handle.net/10289/5614
      Abstract
      Metformin is in widespread clinical use for the treatment of diabetes mellitus in patients. It has been shown to inhibit mitochondrial bioenergetic functions by inhibiting complex I of the electron transport chain. The expression of mitochondrial-specific molecular stress protein Hsp60 is a key consequence of mitochondrial impairment. Since this protein has important immune-modulatory properties, we have investigated the expression of Hsp60 in human THP-1 monocyte cells exposed to metformin. In this study, we demonstrate significant up-regulation of Hsp60 at both mRNA and protein levels when these cells were exposed to metformin at therapeutic dosage levels. Interestingly, there was also an increase in expression of CD14 mRNA in these cells. This suggested a possible modulation of the differentiation rates of the THP-1 cells during exposure to metformin. As monocyte differentiation marks a critical step in atherosclerosis, these observations suggest that long-term exposure to metformin could have important implications for the diabetic patient.
      Date
      2011
      Type
      Journal Article
      Publisher
      Springer
      Collections
      • Science and Engineering Papers [3124]
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