A new protein has been identified that may contribute to Alzheimer’s disease

Summary: GM2A protein reduces neuronal firing and lack of neurite integrity.

A supply: Brigham and Women’s Hospital

Alzheimer’s disease (AD) at present has no treatment and is predicted to have an effect on greater than 100 million folks worldwide by 2050.

Current analysis focuses on two main neurotoxic proteins: amyloid beta (Aβ) and tau. Although these proteins have been proven to be related to AD, for some people with the disease, Aβ and tau ranges don’t persistently clarify or correlate with the severity of cognitive decline.

To establish different proteins instantly implicated in key points of AD, similar to synaptic loss and neurodegeneration, researchers at Brigham and Women’s Hospital, the founding father of the Mass General Brigham Health System, uncovered mind extracts from about 40 people to laboratory neurons. those that had AD had been protected against AD regardless of having excessive Aβ and tau ranges or had little or no Aβ and tau of their brains.

Researchers have identified and confirmed the ganglioside GM2 activator (GM2A) as a protein that causes decreased neuronal firing and lack of neurite integrity. These protein traits may trigger AD, disease development, or each.

Researchers have identified and confirmed the ganglioside GM2 activator (GM2A) as a protein that causes decreased neuronal firing and lack of neurite integrity. Image is within the public area

“Our information assist establish a new and doubtlessly vital protein that may be associated to the pathogenesis of Alzheimer’s disease,” mentioned senior creator Tracy Young-Pearce of the Department of Neurology.

“Interestingly, GM2A has beforehand been implicated in lysosomal storage issues comparable to Tay-Sachs disease, one other situation similar to AD that destroys neurons.”

This is Alzheimer’s analysis information

Author: Haley Bridger
A supply: Brigham and Women’s Hospital
The connection: Haley Bridger – Brigham and Women’s Hospital
Photo: Image is within the public area

Original analysis: open entry,
Tracy Young-Pearce et al. Molecular neurodegeneration


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Elevation of ganglioside GM2 activator (GM2A) in human mind tissue reduces neurite integrity and spontaneous neuronal exercise


Alzheimer’s disease (AD) impacts thousands and thousands of individuals worldwide, however the growth of therapies lags behind. New experimental techniques that monitor neuronal capabilities in circumstances shut to the AD mind may be helpful for figuring out new therapeutic methods.


We current cultured neurons in water-soluble mind extracts from 43 people throughout the spectrum of AD pathology. Multi-electrode arrays (MEAs) and live-cell imaging had been used to assess neuronal firing and neuronal integrity (NI) after therapy of rat cortical neurons (MEA) and human iPSC-derived neurons (iN) with human mind extracts.


We observe associations between spontaneous exercise and Aβ42:40 ranges, between neurite integrity and oligomeric Aβ, and between neurite integrity and tau ranges in mind extracts. However, these associations with Aβ and tau don’t absolutely account for the noticed results. Proteomic profiling of mind extracts identified extra candidates associated to neuronal construction and exercise. Neurotoxicity in MEA and NI assays was related to proteins concerned in lysosomal storage issues, whereas neuroprotection was related to proteins of the WAVE regulatory complicated, which controls actin cytoskeleton dynamics. Elevated ganglioside GM2 activator (GM2A) correlates with decreased NI and MEA exercise, whereas cell-derived GM2A alone is adequate to trigger lack of neurite integrity and decreased neuronal firing.


The methods and information right here introduce a framework for modeling neuronal vulnerability in response to components within the human mind and supply perception into proteins that doubtlessly contribute to AD pathogenesis.

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