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First map of tumour microbiomes finds bacteria live in many cancers

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More than 60 per cent of pancreatic tumours tested positive for bacterial DNA ANNE WESTON, FRANCIS CRICK INSTITUTE / SCIENCE PHOTO LIBRARY The first comprehensive survey of the microorganisms that live inside tumours has found that bacteria reside in those from many different cancer types, but it is unclear whether they contribute to tumour growth.

These bacteria make up part of a tumour’s microbiome – the complex community of bacteria, fungi and other microbes that live inside it.

Bacteria have previously been found in tumours in the bowel and other tissues in the body that are routinely exposed to microbes. However, less is known about their presence in tumours from other cancers, like those of the bone, brain and ovary.

To get a fuller picture, Ravid Straussman at the Weizmann Institute of Science in Israel and his colleagues looked for bacteria in just over 1000 tumour samples collected from people with cancers of the bone, brain, ovary, breast, skin, pancreas or lung at nine medical centres in four countries. Read more: Gut bacteria may be responsible for bowel disorders including cancers

They found bacteria in tumours from all cancer types, although to differing extents.More than 60 per cent of bone, breast […]

read more here —> www.newscientist.com

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