Queensland scientists say they have found a new way of treating aggressive brain tumours.

The Queensland Institute of Medical Research (QIMR) say scientists have found the protein EphA3 causes cancer to grow in about half of glioblastoma multiforme tumour cases.

QIMR spokesman Dr Bryan Day says it has been eradicated in mice in lab trials.

"We've found a receptor that is expressed on 50 per cent of the aggressive form of adult brain cancer," he said.

"This receptor appears to have a functional role in maintaining cells in a more tumorgenic state.

"We've been able to target these cells using a radio-labelled antibody therapy in mice."

The QIMR says it hopes human trials will take place within the next three years.

The research is .