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Protein Destroys ‘Hard to Treat’ Cancers, Could Become ‘One Size Fits All’ Pill

in POSITIVE NEWS
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Protein Destroys ‘Hard to Treat’ Cancers, Could Become ‘One Size Fits All’ Pill
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A protein that destroys hard-to-treat cancers has been discovered by scientists, offering hope of effective new treatments.

Experiments on mice and human tissue found it is effective against the most aggressive tumors.

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They include those of the breast, pancreas, ovaries, and brain. The compound, known as ERX-41, leaves healthy tissue unscathed.

It is one of the most promising breakthroughs to date—offering hope of a ‘one size fits all’ pill that was once thought impossible.

Results were so encouraging that clinical trials are expected to begin in the next few months.

“We identified a critical vulnerability in multiple cancers and have validated our findings in multiple cancer cell types and animal models,” Lead author Professor Ratna Vadlamudi, of the University of Texas said. “The range of cell lines and xenografts in which the compound has been shown to work is compelling and indicates that it is targeting a fundamental vulnerability in cancer cells.”

MORE: Magnets Made by Soil Bacteria Offer Hope for Breast and Prostate Cancer

Xenografts are human tumors grown in mouse models for research purposes. The findings could lead to exciting drugs for cancers that have few effective treatments.

Breakthrough research

Prof. Vadlamudi’s lab staff study breast and ovarian cancer with a goal to developing small-molecule inhibitors for tumors that are resistant to current therapies.

In 2017, they identified a compound called ERX-11 that targets the oestrogen receptor (ER) protein that drives most breast cancers.

By screening similar chemicals, the researchers showed ERX-41 killed ER-positive and triple-negative breast cancers (TNBCs) in petri dishes.

They lack receptors for the hormones oestrogen, progesterone, and human epidermal growth factor 2 – and are the most deadly.

The researchers then showed ERX-41 also attacked a large number of human tumors grown from several of these cell lines in mouse models.

RELATED: Scientists Link 5 Bacteria Types to Aggressive Prostate Cancer, Potentially Revolutionizing Treatment

It was also potent against patient-derived xenografts, shrinking human tumors grown in lab rodents without affecting normal breast cells or causing any discernible toxicity.

“The safety profile and high therapeutic index of this compound is particularly notable and bodes well for clinical translation,” Prof Vadlamudi said.

Further tests found ERX-41 is also effective against pancreatic, brain, and ovarian tumours. They are among the most lethal, with few effective treatments.

“This vulnerability has a large therapeutic window, with no adverse effects either on normal cells or in mice,” Prof. Vadlamudi added. “Our study implicates a targeted strategy for solid tumours including breast, brain, pancreatic, and ovarian whereby small, orally bioavailable molecules result in tumor cell death.”

Dallas-based biotech company EtiraRx hopes clinical trials will be underway in early 2023.

The study was published in the journal Nature Cancer.

SHARE the Hope; Share This Research…


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