Combining Viruses and Bacteria to Attack Deep Cancers?

Oncolytic viruses target and destroy only cancer cells. They have, thus far, only proved effective in treating superficial cancers such as melanomas. If they travel deeper into the body, these viruses are destroyed by the immune system. A Sheffield team are, however, attempting to develop oncolytic viruses to deal with breast and prostate cancers (https://www.theguardian.com/science/2022/may/08/magnets-made-by-soil-bacteria-offer-hope-for-breast-and-prostate-cancer). The scientists hope to do this, by coating the virus with magnetosomes. Magnetosomes are tiny magnets made from iron compounds by certain soil bacteria. They are produced to help the bacteria find optimal conditions for growth and development. The Sheffield team want to see if they can use powerful magnets to speed the coated viruses into contact with deep tumours. If so, the virus would be able to attack the tumour cells, before they were neutralised by the body's immune system.