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  • New potential drug...

New potential drug identified for resistant breast cancer

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2020-03-31T16:30:08+05:30  |  Updated On 31 March 2020 11:06 AM GMT
New potential drug identified for resistant breast cancer

A team or researchers including an Indian-American researcher, have identified a molecule that can help treat breast cancer, giving hope to patients who have become resistant to traditional therapies. The first-in-class molecule shuts down oestrogen-sensitive breast cancer in a new way, researchers said. First-in-class drugs are those that work by a unique mechanism - in this case...

A team or researchers including an  Indian-American researcher, have identified a molecule that can help treat breast cancer, giving hope to patients who have become resistant to traditional therapies.

The first-in-class molecule shuts down oestrogen-sensitive breast cancer in a new way, researchers said.

First-in-class drugs are those that work by a unique mechanism - in this case a molecule that targets a protein on the oestrogen receptor of tumour cells.

The potential drug offers hope for patients whose breast cancer has become resistant to traditional therapies.

"This is a fundamentally different, new class of agents for oestrogen-receptor-positive breast cancer," said Ganesh Raj, professor at the University of Texas Southwestern (UT Southwestern) Simmons Cancer Center.

"Its unique mechanism of action overcomes the limitations of current therapies," Raj said.

All breast cancers are tested to determine if they require oestrogen to grow and about 80 per cent are found to be oestrogen-sensitive, researchers said.

These cancers can often be effectively treated with hormone therapy, such as tamoxifen, but as many as a third of these cancers eventually become resistant, they said.

The new compound is a potential highly effective, next-line treatment for these patients, said Raj.

Traditional hormonal drugs, such as tamoxifen, work by attaching to a molecule called the oestrogen receptor in cancer cells, preventing oestrogen from binding to the receptor, a necessary step for cancer cells to multiply.

However, the oestrogen receptor can mutate and change its shape over time so that the treatment drug no longer fits neatly with the receptor. When this happens, the cancer cells start multiplying again.

"There has been intense interest in developing drugs that block the ability of the oestrogen receptor - the prime target in most breast cancers - from interacting with the co-regulator proteins that cause a tumour's growth," said David Mangelsdorf, professor at UT Southwestern.

"Blocking such "protein-protein interactions" has been a dream of cancer researchers for decades.

The drug works by blocking other molecules - proteins called co-factors - that also must attach to the oestrogen receptor for cancer cells to multiply.

The new molecule, dubbed ERX-11, mimics a peptide, or protein building

breast cancer resistant new drug treatment 
Source : PTI
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Before Joining Medical Dialogues, he has served at important positions in the medical industry in India including as the Hony. Secretary of the Delhi Medical Association as well as the chairman of Anti-Quackery Committee in Delhi and worked with other Medical Councils in India. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

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