"Biodegradable, non-ionic polymeric nanovesicles efficiently encapsulate and deliver siRNA"

Small interfering RNAs, or siRNAs, hold promise to treat tumors, through their ability to specifically knock down oncogenes that promote tumor growth, without the toxicity that accompanies chemotherapy. However, the siRNAs need a delivery vehicle to protect them from degradation and clearance on their journey through the bloodstream to the cancer tumor.