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Treatment for neurodegenerative brain disorders takes a new turn: Report


Treatment for neurodegenerative brain disorders takes a new turn: Report
The nucleus of a human cell showing the location of euchromatin (Image Credit: Wikipedia)

A new study has been able to identify the early neuropathology mechanism of structural characteristics of polyglutamine toxic protein on neurodegenerative brain disorders. The team led by Professor Sung Bae Lee of Brain and Cognitive Sciences and Professor Daehee Hwang of New Biology (Vice-head of the Plant Age and Life Research Group, IBS) worked in the new findings in a joint effort with Professor Yuh Nung Jan at the Howard Hughes Medical Institute (HHMI) in the United States.

The number of patients with neurodegenerative disorders is growing rapidly as humans' life expectancy is increasing. Although many scholars are devoted to researching the pathogenesis and the advancement of neurodegenerative brain disorders, not much has been identified yet. There is still too much work left to develop an actual treatment since it is difficult to diagnose the disease early.

In this study, the researchers identified that coiled-coil structure of polyglutamine toxic protein, which is like an entangled telephone wire, causes the rapid deformation of neuron and early neurodegenerative diseases, such as Huntington's chorea and spino-cerebellar ataxias.

Proteins have abnormal combinations with each other to form the coiled-coil structure of polyglutamine toxic protein. The research team discovered that the coiled-coil structure of polyglutamine toxic protein inside neurons causes early neuropathy by combining with 'Foxo protein', which adjusts the formation of dendrite, as a transcription factor.

While the research focused on Foxo protein as the first factor of the early symptom of neurodegenerative brain disorders, it also predicted that other factors would exist. The research team thus expected to be able to speed the related studies in the future by focusing on clarifying additional factors based on this research.

"The core of this research is that the coiled-coil structure of toxin protein that causes degenerative brain disorders to entangle with the coiled-coil structure of other protein, which is an important cause of early neurodegenerative diseases. By developing a treatment targeting the entanglement based on coiled-coil structure through this research, we expect to be able to have effective treatments to alleviate the early symptoms of neurodegenerative brain disorders," Professor Lee said.

This study has been published on November 6th issue of an international journal called Proceedings of the National Academy of Sciences with another commentary on 'In This Issue' section of the journal, as it was even selected by editors as a paper of highlight. The research was also recommended as an excellent paper on F 1,000 Prime (Faculty of 1,000 Prime), an excellent paper search system of the U.K. This research was also participated by Minjee Kwon and Myeonghoon Han of the Brain and Cognitive Sciences at DGIST as the first authors, who are both in the integrated master's and doctoral program.


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