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Home NATION

Study traces path of cancer causing EBV virus

Press Trust of india by Press Trust of india
June 14, 2021
in NATION
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ORAL CANCER AND PUBLIC AWARNESS.
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New Delhi: Indian scientists have found the cancer-causing virus Epstein-Barr Virus (EBV) affects the glial cells, which provide support and protection for neurons, in the central nervous system and also targets specific molecules in brain cells.

This finding could pave the path towards understanding the probable role of the virus in neurodegenerative pathologies, especially given the fact that the virus has been detected in brain tissue of the patients suffering from neurological disorders such as Alzheimer, Parkinson and multiple Sclerosis, the Department of Science & Technology said in a statement.

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The EBV can cause cancers like nasopharyngeal carcinoma (a type of head and neck cancer), B-cell (a type of white blood cells) cancer, stomach cancer, Burkett’s lymphoma, Hodgkin’s lymphoma, post-transplant lymphoid disorders, and so on.

More than 95 per cent of the adult population is positive for EBV. However, the infection is mostly asymptomatic, and very little is known about the factors which trigger the development of such disease.

It was the detection of the virus in patients with neurodegenerative diseases — debilitating conditions that result in progressive degeneration and or death of nerve cells — that triggered the search for the mechanism of propagation of the virus.

The Raman Spectroscopy System was used to trace the propagation mechanism of the virus by a team of scientists from the Departments of Physics (led by Dr. Rajesh Kumar) and Biosciences and Biomedical Engineering (Dr. Hem Chandra Jha) at IIT Indore along with their collaborator Dr Fouzia Siraj, at National Institute of Pathology (ICMR), New Delhi.

They were supported by the Fund for Improvement of S&T Infrastructure (FIST) scheme of the Department of Science and Technology.

Research scholars Deeksha Tiwari, Shweta Jakhmola, and Devesh Pathak also contributed to this study published recently in the journal ‘ACS Omega’.

The phenomenon of Raman Scattering, first discovered by Indian Nobel laureate Sir C V Raman, provides information on the structure of any material based on the vibrations produced in them, the DST said.

Similarly, the light falling on the virus generates vibrations in the biomolecules, depending on the make of the virus.

Using RS, the light that is scattered by the virus can be captured and analysed to understand its structure and behaviour. Interestingly, every virus has a different biomolecular composition and thus generates a unique Raman Spectrum that serves as a fingerprint to its identity.

Jha and Kumar’s team have elucidated the infection pattern of EBV in the brain cells showing that the virus is also capable of infecting the glial cells (astrocytes and microglia) in the brain.

This study noticed a differential pattern of infection progression in different glial cells.

Jha said, “We found that the virus may take different time intervals to establish and spread infection in various types of glial cells of the brain.”

Apart from the timeline of infection progression, their team also tried to reveal the biomolecules involved at each step of the virus infection and relate it to various neurological manifestations.

Rajesh Kumar added, “Our study showed that molecules like phospho-inositols (PIP), a type of lipid, glycerol, and cholesterol, are predominantly altered during EBV infection in the brain cells.”

The study, based on spatial and temporal changes in Raman signal, was helpful in advancing the application of Raman Scattering as a technique for rapid and non-invasive detection of virus infection in clinical settings.

Since all the techniques available for viral load detection in the brain by far include invasive methods, RS can be a sigh of relief for patients undergoing brain biopsies for diagnostic purposes.

Furthermore, it can be helpful in determining the stage of infection based on biomolecular markers and thus aid in early diagnosis.

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