Mice are not humans!
Just because something works in mice does not mean that this is also true for humans. Amongst other things we have a different metabolism and it is also not clear what type of mouse they used. (I did not go into the original research).

One thing that concerns me about the above article..
What type of malignancy are we talking about? Also if you read the PNAS paper:
".... mice resist very high doses of cancer cells that are lethal to WT mice even at low doses"
I.e. they inject mice with cancer cells.

Clearly we are talking about a model system here. While this is fascinating and it looks promising to use the innate immunity system to fight cancer, this needs to be fully researched.
This is happening now. I am looking forward to the results of this study. There is one thing that nags me, people with cancer have received blood transfusions. According to the above some of them should have benefitted from this (unless you need fresh cells)?

M