Invasive replacement/deletion genes
So first I have to say hello this is my first post :D. Okay so while at work I was replacing some items that were put into wrong boxes and found that pulling every one out and replacing it with the correct item took ages and was thinking of ways to improve when I thought "what if they could replace themselves" I didnt think much of it until I read something about a certian ovarian cancer known to seek out and delete 11p13 and 11p15.5 sequences, because of this it is believed those sequences may contain cancer suppressing traits the abnormal cells "see" as a threat in the same way your body recognizes dangerous foreign materials, thus trying to eliminate them. This led me to a possible conclusion:
could the bodies natural protection be turned against certian genes to forcibly delete them or even replace them. This could make manual gene manipulation something that could be done with a syringe containing an invasive gene modified to recognize gene(n) as a threat.
*DISCLAIMER* Icould be 100% wrong and crazy