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Accidentally discovered 'cancer cure' effective for treatment of all cancer types

Medha BaranwalWritten by Medha Baranwal Published On 2020-01-24T14:30:52+05:30  |  Updated On 24 Jan 2020 9:00 AM GMT
Accidentally discovered cancer cure effective for treatment of all cancer types
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UK: The researchers at Cardiff University's School of Medicine have accidentally discovered a new type of immune cell that kills most cancers, marking a breakthrough in cancer treatment. The researchers found a new type of T-cell that can potentially combat cancer. The findings of the study are published in the journal Nature Immunology. The accidental discovery was made when the...

UK: The researchers at Cardiff University's School of Medicine have accidentally discovered a new type of immune cell that kills most cancers, marking a breakthrough in cancer treatment. The researchers found a new type of T-cell that can potentially combat cancer. The findings of the study are published in the journal Nature Immunology. 

The accidental discovery was made when the scientists were analyzing blood samples for immune cells that could fight bacteria. They instead discovered the T-cell, a never-before-seen receptor that only latches on to cancerous cells, ignoring healthy ones.

Though the discovery is still young, it serves as a stepping stone for other researchers to build on the new approach to study it further and start on both animal and human studies.

The immune system is the defense of the body against harmful pathogens (foreign bodies) that may enter the body. Immune cells, such as macrophages and white blood cells work simultaneously to fight off disease-causing organisms including cancer. Immunotherapy is used to target cancer cells, but in some instances, they only for some types. It's usually made of white blood cells and some organs and tissues from the lymph system.

For years, doctors have used CAR-T therapy for cancer treatment. This treatment involves getting the patient's own immune cells and genetically modifying them. In this method, the T cells are then returned to the body where they start to hunt and kill cancer cells. The drawback of this treatment is that it only targets some type of cancer cells, such as bone marrow and blood cancer but is not effective for solid tumors that account for the majority of cancer cases. 

Since the scope of efficacy is limited, scientists are looking for other ways the immune system naturally attacks tumors, hoping to find something that can kill multiple cancer cells all at once.

How this novel treatment works 

The novel T-cell is believed to have the ability to distinguish cancer cells from healthy ones. It carries a never-before-seen receptor that latches on to most human cancers while ignoring healthy cells in the body.

The surface molecule, MR1, where the new T-cell attaches to, is also found in almost all cells in the body. But they may present differently on cancer cells, permitting a single TCR to be able to effectively target many types of tumors.

In laboratory studies, the researchers found that the immune cell equipped with the new receptor was revealed to kill skin, lung, colon, blood, bone, breast, kidney, ovarian, prostate, and cervical cancer.

"The development of a 'one size fits all' type of immunotherapy, which could target different types of cancer cells and does not need to be manufactured for each individual patient, is an exciting prospect. This research represents a new way of targeting cancer cells that is really quite exciting, although much more research is needed to understand precisely how it works. It is still early days and we are a while off from confirming whether this approach will definitely work in patients," Dr. Alasdair Rankin, Director of Research and Policy at the blood cancer charity Bloodwise, said.

The new breakthrough could pave the way for the formulation of new and effective therapy to combat cancer.

The study, "Genome-wide CRISPR–Cas9 screening reveals ubiquitous T cell cancer targeting via the monomorphic MHC class I-related protein MR1," is published in the journal Nature Immunology. 

DOI: https://doi.org/10.1038/s41590-019-0578-8

cancercancer treatmentCardiff UniversityNature Immunology
Source : journal Nature Immunology
Medha Baranwal
Medha Baranwal

    MSc. Biotechnology

    Medha Baranwal joined Medical Dialogues as an Editor in 2018 for Speciality Medical Dialogues. She covers several medical specialties including Cardiac Sciences, Dentistry, Diabetes and Endo, Diagnostics, ENT, Gastroenterology, Neurosciences, and Radiology. She has completed her Bachelors in Biomedical Sciences from DU and then pursued Masters in Biotechnology from Amity University. She has a working experience of 5 years in the field of medical research writing, scientific writing, content writing, and content management. She can be contacted at  editorial@medicaldialogues.in. Contact no. 011-43720751

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