Discovered Protein Halts Prostate Cancer

Discovered Protein Halts Prostate Cancer

Thumbnail image from Pixabay

By Rebecca Fending, information from

It’s not news that prostate cancer is a common fear among men, but the fact that scientists have recently discovered a specific protein that stops prostate cancer in its tracks is.

According to, The American Cancer Society’s estimates for prostate cancer in the United States for 2021 were about 248,530 new cases of prostate cancer and about 34,130 deaths from prostate cancer. This translates to about one in eight men who are diagnosed with this disease yearly. While these numbers can be scary, there may be an answer to eradicating the condition.

The magic protein

Typically affecting men over 50 years old, prostate cancer affects the androgen receptor — a protein that produces testosterone within the body. The newly discovered protein, dubbed NXTAR (next to the androgen receptor), acts as an emergency stop.

In men with prostate cancer, research has shown that the androgen receptor acts as an inhibitor to its own suppressor, NXTAR. According to Professor Nupam Mahajan of Washington University School of Medicine in St. Louis, the androgen receptor binds to NXTAR and shuts it down.

“This means in all the prostate cancer samples we study, we rarely find NXTAR, because it is suppressed by the heavy presence of the androgen receptor in these types of tumors,” Prof. Mahajan explains.

When the androgen receptor was suppressed, NXTAR appeared, cluing researchers in to the fact that NXTAR is likely the key to combating prostate cancer growth.

Image from Pixabay

What does this mean for future treatment?

Scientists originally developed the drug, called (R)-9b, to block the androgen receptor. According to Prof. Mahajan, the key focus moving forward is finding a way to integrate both (R)-9b and NXTAR as part of new prostate cancer therapies.

“One possible strategy is to encapsulate the small molecule drug and the key piece of NXTAR into nanoparticles, perhaps into the same nanoparticle, and shut down the androgen receptor in two different ways,” the researcher concludes.

Mahajan has filed a patent application on the (R)-9b drug, licensed to his biotech startup TechnoGenesys.


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