{"id":355396,"date":"2017-09-22T06:49:56","date_gmt":"2017-09-22T06:49:56","guid":{"rendered":"http:\/\/citifmonline.com\/?p=355396"},"modified":"2017-11-10T11:13:20","modified_gmt":"2017-11-10T11:13:20","slug":"new-antibody-attacks-99-of-hiv-strains","status":"publish","type":"post","link":"https:\/\/citifmonline.com\/2017\/09\/new-antibody-attacks-99-of-hiv-strains\/","title":{"rendered":"New antibody attacks 99% of HIV strains"},"content":{"rendered":"

Scientists have engineered an antibody that attacks 99% of HIV strains and can prevent infection in primates.<\/p>\n

It is built to attack three critical parts of the virus – making it harder for HIV to resist its effects.<\/p>\n

The work is a collaboration between the US National Institutes of Health and the pharmaceutical company Sanofi.<\/p>\n

The International Aids Society said it was an “exciting breakthrough”. Human trials will start in 2018 to see if it can prevent or treat infection.<\/p>\n

Our bodies struggle to fight HIV because of the virus’ incredible ability to mutate and change its appearance.<\/p>\n

There varieties of HIV – or strains – in a single patient are comparable to those of influenza\u00a0during a worldwide flu season.<\/p>\n

So the immune system finds itself in a fight against an insurmountable number of strains of HIV.<\/p>\n

Super-antibodies<\/strong><\/p>\n

But after years of infection, a small number of patients develop powerful weapons called “broadly neutralising antibodies” that attack something fundamental to HIV and can kill large swathes of HIV strains.<\/p>\n

Researchers have been trying to use broadly neutralising antibodies as a way to treat HIV, or prevent infection in the first place.<\/p>\n

The study,\u00a0published in the journal Science, combines three such antibodies into an even more powerful “tri-specific antibody”.<\/p>\n

Dr Gary Nabel, the chief scientific officer at Sanofi and one of the report authors, told the BBC News website: “They are more potent and have greater breadth than any single naturally occurring antibody that’s been discovered.”<\/p>\n

The best naturally occurring antibodies will target 90% of HIV strains.<\/p>\n

“We’re getting 99% coverage, and getting coverage at very low concentrations of the antibody,” said Dr Nabel.<\/p>\n

Experiments on 24 monkeys showed none of those given the tri-specific antibody developed an infection when they were later injected with the virus.<\/p>\n

Dr Nabel said: “It was quite an impressive degree of protection.”<\/p>\n

The work included scientists at Harvard Medical School, The Scripps Research Institute, and the Massachusetts Institute of Technology.<\/p>\n

‘Exciting’<\/strong><\/p>\n

Clinical trials to test the antibody in people will start next year.<\/p>\n

Prof Linda-Gail Bekker, the president of the International Aids Society, told the BBC: “This paper reports an exciting breakthrough.<\/p>\n

“These super-engineered antibodies seem to go beyond the natural and could have more applications than we have imagined to date.<\/p>\n

“It’s early days yet, and as a scientist I look forward to seeing the first trials get off the ground in 2018.<\/p>\n

“As a doctor in Africa, I feel the urgency to confirm these findings in humans as soon as possible.”<\/p>\n

Dr Anthony Fauci, the director of the US National Institute of Allergy and Infectious Diseases, said it was an intriguing approach.<\/p>\n

He added: “Combinations of antibodies that each bind to a distinct site on HIV may best overcome the defences of the virus in the effort to achieve effective antibody-based treatment and prevention.”<\/p>\n

–<\/p>\n

Source: BBC<\/p>\n","protected":false},"excerpt":{"rendered":"

Scientists have engineered an antibody that attacks 99% of HIV strains and can prevent infection in primates. It is built to attack three critical parts of the virus – making it harder for HIV to resist its effects. The work is a collaboration between the US National Institutes of Health and the pharmaceutical company Sanofi. […]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[19],"tags":[9615,3],"yoast_head":"\nNew antibody attacks 99% of HIV strains - Citi 97.3 FM - Relevant Radio. 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