Scientists have found a link between taking antidepressants and blood thinners, and a reduction in brain cancer.
The Swiss scientists found that the antidepressants work against brain cancer by increasing “tumor autophagy” (a process whereby Cancer Cells eat themselves).
The scientists next combined the antidepressants with blood thinners—also known to increase autophagy—as a treatment for mice with the first stages of human glioblastoma. Mouse lifespan doubled with the drug combination therapy, while either drug alone had no effect.
“It is exciting to envision that combining two relatively inexpensive and non-toxic classes of generic drugs holds promise to make a difference in the treatment of patients with lethal brain cancer,” says senior study author Douglas Hanahan, of the Swiss Federal Institute of Technology (EPFL).
“However, it is presently unclear whether patients might benefit from this treatment. This new mechanism-based strategy to therapeutically target glioblastoma is provocative, but at an early stage of evaluation, and will require considerable follow-up to assess its potential.”
Mice received the combination therapy 5 days a week with 10-15 minute intervals between drugs. The antidepressant was given orally, and the other drug (the blood thinner or anti-coagulant) was injected. The data suggest that the drugs act synergistically by disrupting, in two different places, the biological pathway that controls the rate of autophagy—a cellular recycling system that at low levels enhances cell survival in stressful conditions. The two drugs work together to hyper-stimulate autophagy, causing the Cancer Cells to die.
“Importantly, the combination therapy did not cure the mice; rather, it delayed disease progression and modestly extended their lifespan,” Hanahan says. “It seems likely that these drugs will need to be combined with other classes of anticancer drugs to have benefit in treating gliblastoma patients. One can also envision ‘co-clinical trials’ wherein experimental therapeutic trials in the mouse models of glioblastom are linked to analogous small proof-of-concept trials in GBM patients. Such trials may not be far off.”
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