A British man could become the
first person in the world to be cured of HIV using a new therapy designed by a team
of scientists from five UK universities. The therapy is combining standard
antiretroviral drugs with another one that reactivates dormant HIV and vaccine
that induces the immune system to destroy the infected cells. Antiretroviral drugs
alone are highly effective at stopping the virus from reproducing but do not
eradicate the disease, co must be taken for life. The 44-year old Briton is the
first among 50 people to complete a trial of the treatment, designed by
scientists and doctors from Oxford, Cambridge, Imperial College, University
College London and King’s College. Early tests show no signs of the virus in
his blood. If successful, it offers hope of an irreversible cure for millions
of people infected with the virus.
But the person will have to wait
for some months before confirmation on whether the treatment has permanently
cleared the disease. It is possible that the absence of the virus could be down
to the conventional drugs that he has also been taking which can temporarily clear
the body of the disease. HIV is able to hide from the immune system in dormant
cells where sophisticated testing cannot find it, and therefore resist therapy.
The treatment endeavours to trick the virus into emerging from its hiding
places and then trigger the body’s immune system to recognize it and attack it,
an approach that has been called “kick and kill”. The new therapy works in two
stages. Firstly, a vaccine helps the body recognize the HIV infected cells so
it can clear them out. Secondly, a new drug called Vorinostat activated the
dormant T-cells so they can be spotted by the immune system.
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