Stem Cell Models Reflect the Intricacies of an Alzheimer’s Brain
The Context: There are no effective treatments for Alzheimer’s disease (AD), in large part because we do not understand...
About Alzheimer's Alzheimer's News Publications FAQs
At NYSCF, we are developing new Alzheimer’s disease treatment strategies on several fronts:
Alzheimer’s is a devastating neurological disease that causes dementia (cognitive decline severe enough to interfere with normal life) and eventually leads to death.
Alzheimer’s symptoms manifest differently in each patient. However, most patients become forgetful and confused in early Alzheimer’s disease stages. As the disease advances, patients can experience symptoms such as:
The information provided is not medical advice and is not intended to be medical advice. If you are experiencing any of these symptoms, please talk to your doctor to determine the best course of action for your situation.
The two hallmarks of Alzheimer’s pathology are amyloid-beta plaques and neuron tangles—structural abnormalities found in the brain. However, we do not know exactly how these abnormalities arise or what role they play in the disease.
Alzheimer’s is also known to be influenced by genetics, with certain genetic variants increasing one’s risk of developing the disease. Using the power of stem cells, our scientists have the ability to study an unprecedentedly large number of genetically diverse cells from people with Alzheimer’s, enabling us to examine how genetics influence disease onset and progression as well as identify new risk-related genes.
There is currently no cure for Alzheimer’s disease. There are a few approved treatments that temporarily slow cognitive decline and address symptoms of the disease such as mood and sleep changes, but there are no therapies that reverse the disease course. Finding effective Alzheimer’s disease treatments and ultimately, an Alzheimer’s disease cure, is one of NYSCF’s central goals. We are working toward achieving this goal by using stem cells to study the actual human cells affected by the disease and discern its underlying causes.
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Below are select publications outlining recent advancements in Alzheimer’s Disease research from NYSCF scientists.
CD49f is a novel marker of functional and reactive human iPSC-derived astrocytes
Lilianne Barbar, Tanya Jain, Matthew Zimmer, Ilya Kruglikov, Jessica Sadick, Minghui Wang, Kriti Kalpana, Indigo V.L. Rose, Suzanne R. Burstein, Tomasz Rusielewicz, Madhura Nijsure, Kevin A Guttenplan, Angelique di Domenico, Gist Croft, Bin Zhang, Hiroko Nobuta, Jean M. Hébert, Shane A. Liddelow, Valentina Fossati. Neuron. 2020. DOI: https://doi.org/10.1016/j.neuron.2020.05.014
This study creates astrocytes – an integral support cell in the brain – from stem cells and shows that in disease-like environments, these normally helpful cells can turn into neuron-killers.
Autophagy Induction by Bexarotene Promotes Mitophagy in Presenilin 1 Familial Alzheimer’s Disease iPSC-Derived Neural Stem Cells.
Martín-Maestro P, Sproul A, Martinez H, Paquet D, Gerges M, Noggle S, Starkov AA. Molecular Neurobiology. 2019. doi: 10.1007/s12035-019-01665-y.
In this study, researchers at Weill Cornell Medicine, Columbia University, and Ludwig Maximilian University of Munich in collaboration with NYSCF Research Institute scientists find that neural stem cells from Alzheimer’s patients are impaired in their ability to “trash” damaged mitochondria, potentially keeping them from turning into new neurons.
CRISPR/Cas9-Correctable mutation-related molecular and physiological phenotypes in iPSC-derived Alzheimer’s PSEN2N141I neurons.
Ortiz-Virumbrales M, Moreno CL, Kruglikov I, Marazuela P, Sproul A, Jacob S, Zimmer M, Paull D, Zhang B, Schadt EE, Ehrlich ME, Tanzi RE, Arancio O, Noggle S, Gandy S.
Acta Neuropathologica Communications. 2017. doi: 10.1186/s40478-017-0475-z.
In this study, NYSCF scientists in collaboration with researchers at the Icahn School of Medicine at Mount Sinai refined a technique to turn skin cells from patients with mild cognitive impairment into the brain cells that degenerate first in Alzheimer’s disease.
Characterization and Molecular Profiling of PSEN1 Familial Alzheimer’s Disease iPSC-Derived Neural Progenitors.
Sproul AA, Jacob S, Pre D, Kim SH, Nestor MW, Navarro-Sobrino M, Santa-Maria I, Zimmer M, Aubry S, Steele JW, Kahler DJ, Dranovsky A, Arancio O, Crary JF, Gandy S, Noggle SA.
PLoS One. 2014. doi: 10.1371/journal.pone.0084547.
This study outlines how NYSCF scientists in collaboration with scientists at the Icahn School of Medicine at Mount Sinai successfully generated a stem cell model of familial Alzheimer’s disease and identified genes that contribute to its pathology and onset.
Generation of iPSC lines from archived non-cryoprotected biobanked dura mater.
Sproul AA, Vensand LB, Dusenberry CR, Jacob S, Vonsattel JP, Paull DJ, Shelanski ML, Crary JF, Noggle SA.
Acta Neuropathologica Communications. 2014. doi: 10.1186/2051-5960-2-4
This paper details how NYSCF scientists were able to generate induced pluripotent stem cell lines from bio-banked tissue taken from Alzheimer’s patients.
5.4 million people in the United States are living with Alzheimer’s and 8.2 million more will be diagnosed by 2050.
Alzheimer’s is a form of dementia. Dementia is defined as a decline in mental ability severe enough to interfere with normal life. It is an umbrella term that encompasses aspects of many diseases such as Huntington’s disease, lewy body dementia, and vascular dementia, among others. As a form of dementia, Alzheimer’s is characterized by a progressive loss of memory and cognitive function, often appearing with brain abnormalities such as plaques and tangles. Alzheimer’s accounts for 60-80% of dementia cases.
Early onset Alzheimer’s is defined as Alzheimer’s that begins prior to age 65. Early-onset Alzheimer’s symptoms are the same as those for the typical form of the disease and can include:
Poor memory (asking for the same information again and again)
Impaired problem solving
Poor judgement
Changes in mood or personality
Trouble speaking and communicating
We need to study human cells from people with Alzheimer’s in order to find effective therapies—and stem cells allow us to do this. Most laboratory research on Alzheimer’s is conducted in animals, tissues from these animals, or artificial cell lines. Mice do not get Alzheimer’s disease. Not surprisingly, none of the treatments that have looked promising in these animal models have slowed disease progression or cured people with Alzheimer’s, likely because these systems do not sufficiently mimic what occurs in people with the disease. At NYSCF, we turn stem cells into the brain cells affected by Alzheimer’s to study their dysfunction and test drugs.
We have built a comprehensive library of cells from people with and without Alzheimer’s. This resource allows us to look at the mechanisms of cell damage and responses to promising therapy in each of many different forms of Alzheimer’s. We can also compare patients who have Alzheimer’s-related genetic changes but no symptoms to healthy individuals. At NYSCF, this collection of cells, in combination with the NYSCF Global Stem Cell Array®, represent a unique and incredibly powerful tool for increasing our understanding of Alzheimer’s, uncovering safe and effective treatments, and finding cures.