Study: Chemotherapy can make cancer more resistant to treatment

Writing in Nature Medicine, US experts said chemo causes wound-healing cells around tumours to make a protein that helps the cancer resist treatment.

A UK expert said the next step would be to find a way to block this effect.

Around 90% of patients with solid cancers, such as breast, prostate, lung and colon, that spread – metastatic disease – develop resistance to chemotherapy.