Bases for a non-toxic anti-cancer wonder drag?

http://medicalxpress.com/news/2013-02-compound-tumor-fighting-protein-cancer-therapy.html

This sounds promising -perhaps too good to be true?
How many times has research into a drag or approach to treating cancer looked extremely promising only to be proven very disappointing? -answer, many.
But could it be this time will be different? I guess we will just have to wait and see.

I also have similar thoughts about this:

http://phys.org/news/2013-02-scientists-nanoscale-vehicle-cancer-healthy.html

-sounds promising doesn't it!

Originally posted by humy
http://medicalxpress.com/news/2013-02-compound-tumor-fighting-protein-cancer-therapy.html

This sounds promising -perhaps too good to be true?
How many times has research into a drag or approach to treating cancer looked extremely promising only to be proven very disappointing? -answer, many.
But could it be this time will be different? I guess we will just ...[text shortened]... /news/2013-02-scientists-nanoscale-vehicle-cancer-healthy.html

-sounds promising doesn't it!

My read of it seems to suggest it works before you get cancer to keep you from getting cancer, in other words, a preventative not a cure if you already have established cancer colonies. At least that is what it seems to be saying. If so, at least it would be extremely useful to prevent metastastis of existing cancers if conventional therapies work and the system needs to mop up the loose cells floating around trying to get it started again.