'Universal cancer vaccine’ breakthrough claimed by scientists

Researchers exploring nanoparticulate RNA immunotherapy have taken what has been described as a “very positive step forward” in treating cancer. The treatment involves blending particles of the disease’s genetic RNA code with fat which is then injected into patients’ bloodstream to produce aggressive T-cells, which attack the cancer. Results on rodents and small numbers of human patients are said to be “interesting”. Immunotherapy for cancer is a rapidly growing field of study, with potential vaccines costing a fraction of traditional treatments, and with minimal side-effects.

Sign up for a full digest of all the best opinions of the week in our Voices Dispatches email Sign up to our free weekly Voices newsletter Please enter a valid email address Please enter a valid email address SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy notice Thanks for signing up to the

Voices Dispatches email {{ #verifyErrors }} {{ message }} {{ /verifyErrors }} {{ ^verifyErrors }} Something went wrong. Please try again later {{ /verifyErrors }}

Scientists have taken a “very positive step” towards creating a universal vaccine against cancer that makes the body’s immune system attack tumours as if they were a virus, experts have said.

Writing in Nature, an international team of researchers described how they had taken pieces of cancer’s genetic RNA code, put them into tiny nanoparticles of fat and then injected the mixture into the bloodstreams of three patients in the advanced stages of the disease.

The patients' immune systems responded by producing "killer" T-cells designed to attack cancer.

13 ways to help prevent cancer Show all 13 1 / 13 13 ways to help prevent cancer 13 ways to help prevent cancer Stopping smoking. This notoriously difficult habit to break sees tar build-up in the lungs and DNA alteration and causes 15,558 cancer deaths a year 13 ways to help prevent cancer Avoiding the sun, and the melanoma that comes with overexposure to harmful UV rays, could help conscientious shade-lovers dodge being one of the 7,220 people who die from it 13 ways to help prevent cancer A diet that is low in red meat can help to prevent bowel cancer, according to the research - with 30 grams a day recommended for men, and 25 a day recommended for women 13 ways to help prevent cancer Foods high in fibre, meanwhile, can further make for healthier bowels. Processed foods in developed countries appear to be causing higher rates of colon cancer than diets in continents such as Africa, which have high bean and pulse intakes 13 ways to help prevent cancer Two servings of fruit and three servings of vegetables a day were given as the magic number for good diet in the research. Overall, diet causes only slightly fewer cancer deaths than sun exposure in Australia, at 7,000 a year 13 ways to help prevent cancer Obesity and being overweight, linked to poor diet and lack of exercise, causes 3,917 deaths by cancer a year on its own Getty 13 ways to help prevent cancer Dying of a cancer caused by infection also comes in highly, linked to 3,421 cancer deaths a year. Infections such as human papilloma virus - which can cause cervical cancer in women - and hepatitis - can be prevented by vaccinations and having regular check-ups 13 ways to help prevent cancer Cutting back on drinks could reduce the risk of cancers caused by alcohol - such as liver cancer, bowel cancer, breast cancer and mouth cancer - that are leading to 3,208 deaths a year 2014 Getty Images 13 ways to help prevent cancer Sitting around and not getting the heart pumping - less than one hour's exercise a day - is directly leading to about 1,800 people having lower immune functions and higher hormone levels, among other factors, that cause cancers 2011 Getty Images 13 ways to help prevent cancer Hormone replacement therapy, which is used to relieve symptoms of the menopause in women, caused 539 deaths from (mainly breast) cancer in Australia last year. It did, however, prevent 52 cases of colorectal cancers 2003 Getty Images 13 ways to help prevent cancer Insufficient breastfeeding, bizarrely, makes the top 10. Breastfeeding for 12 months could prevent 235 cancer cases a year, said the research AFP/Getty Images 13 ways to help prevent cancer Oral contraceptives, like the Pill, caused about 105 breast cancers and 52 cervical cancers - but it also prevented about 1,440 ovarian and uterine (womb) cases of cancer last year 2006 Getty Images 13 ways to help prevent cancer Taking aspirin also prevented 232 cases in the Queensland research of colorectal and oesophagal cancers - but as it can also cause strokes, is not yet recommended as a formal treatment against the risk of cancer

The vaccine was also found to be effective in fighting “aggressively growing” tumours in mice, according to researchers, who were led by Professor Ugur Sahin from Johannes Gutenberg University in Germany.

“[Such] vaccines are fast and inexpensive to produce, and virtually any tumour antigen [a protein attacked by the immune system] can be encoded by RNA," they wrote

“Thus, the nanoparticulate RNA immunotherapy approach introduced here may be regarded as a universally applicable novel vaccine class for cancer immunotherapy.”

The paper said the three patients were given low doses of the vaccine and the aim of the trial was not to test how well the vaccine worked. While the patients' immune systems seemed to react, there was no evidence that their cancers went away as a result.

Cancer breakthrough revealed

In one patient, a suspected tumour on a lymph node got smaller after they were given the vaccine. Another patient, whose tumours had been surgically removed, was cancer-free seven months after vaccination.

The third patient had eight tumours that had spread from the initial skin cancer into their lungs. These tumours remained “clinically stable” after they were given the vaccine, the paper said.

The vaccine, which used a number of different pieces of RNA, activated dendritic cells that select targets for the body's immune system to attack. This was followed by a strong response from the "killer" T-cells that normally deal with infections.

Cancer immunotherapy is currently causing significant excitement in the medical community.

It is already being used to treat some cancers with a number of patients still in remission more than 10 years after treatment.

While traditional cancer treatment for testicular and other forms of the disease can lead to a complete cure, lung cancer, melanoma, and some brain and neck cancers have proved difficult to treat.

Being able to inject an effective treatment into a patient’s bloodstream would be a significant step forward. The vaccine also produced limited flu-like side-effects in contrast to the extreme sickness caused by chemotherapy.

Professor Alan Melcher, of the Institute of Cancer Research, said: “Immunotherapy for cancer is a rapidly evolving and exciting field. This new study, in mice and a small number of patients, shows that an immune response against the antigens within a cancer can be triggered by a new type of cancer vaccine.

“Although the research is very interesting, it is still some way away from being of proven benefit to patients.

“In particular, there is uncertainty around whether the therapeutic benefit seen in the mice by targeting a small number of antigens will also apply to humans, and the practical challenge of manufacturing nanoparticles for widespread clinical application.”

Dr Helen Rippon, chief executive of Worldwide Cancer Research, said “We know the immune system has great potential to be manipulated and reactivated to fight cancer cells, that’s why we’ve been funding research into this for 15 years.

“These are exciting and novel results, showing the promise of an RNA nanoparticle vaccine to do just that.”

She described the immune response in the three patients as “positive” and noted that advanced skin cancer was “a notoriously difficult cancer to treat”.

“However, more research is needed in a larger number of people with different cancer types and over longer periods of time before we could say we have discovered a ‘universal cancer vaccine’. But this research is a very positive step forwards towards this global goal,” she said.