Personalized HIV therapy developed

[Guest guest]

Dear Forum,

WASHINGTON:

A research team from Research Institute of the McGill University Health Centre

(MUHC), along with researchers from Universite de Montreal have developed a

personalized immunotherapy to fight HIV/AIDS.

Scientists have long been finding it difficult to create an AIDS vaccine due to

high genetic variability of the HIV virus.

" Our approach is unique in the world: no one else has yet developed customized

immunotherapy using the virus from individual patients, " said Dr Jean-Pierre

Routy, from MUHC.

" This experimental technique remains long and costly for the moment, but we're

hoping it will hold the promise of a completely innovative and widely available

treatment in the future, " he added.

This immunotherapy is based on the properties of dendritic cells, whose role is

to present specific proteins from infectious organisms at their surface, thereby

alerting the rest of the immune system.

In collaboration with Argos Therapeutics, the researchers designed a study in

which the dendritic cells of nine study patients were multiplied in vitro and

then treated with the RNA (ribonucleic acid) from the virus that had infected

each patient. A virus sample was taken before the administration of any

antiretroviral treatment.

The surfaces of these manipulated dendritic cells present an increased number of

HIV proteins, which allows them to stimulate the cytotoxic response of a certain

type of immune cell called CD8+ lymphocytes.

After receiving multiple subcutaneous injections of these dendritic cells, eight

of the nine patients involved experienced a significant increase in CD8+

lymphocyte activity.

" At this stage, we have shown that the technique doesn't cause side effects or

an undesirable auto-immune response, " said Dr Routy.

http://timesofindia.indiatimes.com/articleshow/msid-3371987,prtpage-1.cms

Shelter

e-mail: <shelter@...>