Tumor cells can lapse into a sleep-like state and thereby evade the destructive effect of cancer drugs. In some types of the disease, such as certain forms of lung cancer, this state is triggered by stress hormones in the body. Inside the cancer cells, glucocorticoid receptors recognize the hormones, and the cells respond by lapsing into a state in which they undergo barely any division. This renders many treatments ineffective.

Scientists are attempting to switch off these receptors with a view to waking the cancer cells up from sleep—making them vulnerable to attack.

Prostate-targeted, engineered nanoparticles made of amorphous silica are effective in killing prostate tumors directly while enhancing antitumor immunity, according to a preclinical study led by investigators at Weill Cornell Medicine and the Cornell Duffield College of Engineering.

Deep brain stimulation (DBS) has been used for more than three decades to treat motor symptoms of Parkinson’s disease. Today, more than 200,000 patients worldwide have been implanted with these systems, which continuously deliver electrical stimulation to specific deep-brain regions to reduce rigidity and tremor. Yet despite its clinical success, conventional deep brain stimulation remains limited in its ability to address one of the disease’s most disabling symptoms: walking impairments.

Monash University researchers have found in laboratory experiments that a drug that delivers copper to the brain significantly reduces toxic Alzheimer’s proteins and improves long-term spatial memory.