Mechanism behind gene linked to both Alzheimer’s, diabetes identifiedSeptember 29th, 2010 - 1:42 pm ICT by ANI
Washington, Sep 29 (ANI): Scientists have identified the mechanism behind a single gene that is responsible for causing both Alzheimer’s disease and Type 2 diabetes.
The data show that a gene for a protein called SorCS1, which can cause Type 2 diabetes, impacts the accumulation of amyloid-beta (Abeta) in the brain. Abeta plays a key role in the development of Alzheimer’s disease.
Sam Gandy of the Mount Sinai led the study, together with first author Rachel Lane, PhD, a postdoctoral researcher in Gandy’s Lab.
Lane and Gandy analysed both the brains of mice genetically engineered to be deficient in SorCS1 as well as cells engineered to express high levels of SorCS1.
They found an increased level of Abeta in SorCS1-deficient mice, and low levels of Abeta in the cells overexpressing SorCS1.
“We knew that Type 2 diabetes could increase the risk for Alzheimer’s disease, but we were not sure how that risk was caused or whether that diabetes risk would impact Abeta levels in the brain.
“These results elucidate a common mechanism between diabetes and Alzheimer’s and will bring us a step closer to identifying effective treatments for both diseases,” said Gandy.
The researchers were also interested to find that the SorCS1-deficient mice had decreased levels of the protein Vps35, which was linked to Alzheimer’s by Scott Small of the Columbia University.
They propose that depleted SorCS1 may cause Vps35 levels to also decrease, leading to further accumulation of Abeta in mice.
“Alzheimer’s and Type 2 diabetes are reaching epidemic levels, afflicting millions. Their risk factors overlap and include high cholesterol, obesity, vascular disease, and inflammation.
Now that we have a better understanding of where the connection between these two diseases originates on a molecular level, the next step is to develop drugs that will help reduce their devastating impact,” said Gandy.
The study was published in the Journal of Neuroscience. (ANI)
- Scientists eliminate plaque formation in Alzheimer's - Sep 06, 2012
- New gene could explain relationship between diabetes, Alzheimer's - Oct 13, 2010
- Biochemical to treat diabetes discovered - Jul 16, 2012
- Decrease in protein levels could be sign child will develop diabetes - Apr 26, 2011
- Factor X in coffee boosts protection against Alzheimer's - Jun 30, 2011
- The real culprit behind Alzheimer's disease - Apr 28, 2010
- New discovery opens way to fat busting pill - Mar 08, 2011
- Key Alzheimer's risk gene causes alterations in shapes of brain protein deposits - Jul 15, 2010
- Scientists reveal new clues to origin of diabetes - Oct 13, 2010
- Liver, not brain, may be source of Alzheimer's plaques - Mar 04, 2011
- A breakthrough in Alzhemier's or Parkinson's treatment? - May 07, 2012
- New discovery paves way for anti-obesity pill - Mar 08, 2011
- Molecular 'switch' that contributes to cellular aging process identified - Dec 01, 2010
- Too much or too little iron bad for brain - Jan 15, 2012
- New gene therapy may 'fix memory problems in Alzheimer patients' - Nov 29, 2010
Tags: abeta, accumulation, alzheimer, brains, columbia university, deficient mice, diabetes, diabetes risk, epidemic levels, gandy, high cholesterol, inflammation, key role, mount sinai, obesity, postdoctoral researcher, rachel lane, risk factors, type 2 diabetes, vascular disease