Latest News


ACTG 5142 Sequences

Viral Sequence data used in "Zabrina L. Brumme*, Mina John*, Jonathan M. Carlson, Chanson J. Brumme, Dennison Chan, Mark A. Brockman, Luke C. Swenson, Iris Tao, Sharon Szeto, Pamela Rosato, Jennifer Sela, Carl Kadie, Nicole Frahm, Christian Brander, David W. Haas, Sharon Riddler, Richard Haubrich, Bruce Walker, P. Richard Harrigan, David Heckerman, Simon Mallal. HLA-associated immune escape pathways in HIV-1 subtype B Gag, Pol and Nef Proteins. PLoS ONE 2009,4(8): e6687. doi:10.1371/journal.pone"

HIV-1 gag, pol and nef sequences were generated from clinically-derived samples from 555 chronically infected individuals in the USA. Sequences were generated at the Centre for Clinical Immunology and Biomedical Statistics, Institute for Immunology and Infectious Diseases using a nested PCR approach. After reverse transcription, two overlapping 5’ and 3’ fragments approximately 6 kb in length and spanning the full HIV-1 genome were amplified by nested-PCR. Bi-directional sequencing on all fragments was performed with iterative gap filling using alternative primers. HIV sequences were aligned against the full genome of reference sequence HXB2 as near full length genomes or partial length sequence fragments with intervening gaps. All insertion/deletion mixtures resulting in stretches of unresolvable IUPAC mixture codes were removed, causing gaps in sequence and areas not sequenced due to repeated sequencing or amplification failures also created gaps.

    Click on the links below to download the HXB2 aligned sequence files:
  • DNA Sequences gag, pol & nef - fasta format
  • Protein Sequences gag, pol & nef - fasta format




Adaptation Map

Full genome map of statistically significant associations between HIV polymorphism and HLA alleles evident in combined analysis of the ACTG 5142 and WA HIV cohorts. All associations in analysis of 2 digit and 4 digit resolution of HLA- B alleles are shown. The amino acids shown above the line correspond to the non-adapted or susceptible residue and the amino acids below the line are the adapted form. Citation : M John, D Heckerman, L Park, S Gaudieri, A Chopra, J Carlson, I James, D Nolan, R Haubrich, Simon Mallal, and ACTG 5142 study team. Genome-wide HLA-associated Selection in HIV-1 and Protein-specific Correlations with Viral Load: An ACTG5142 Study. 15th Conference on Retroviruses and Opportunistic Infections (CROI) 2008. February 3rd to 6th. Boston, USA. Session 58 Abstracts #312.


Click on image to enlarge

Download .PDF version




Perth Physician Unveils Groundbreaking Research On World AIDS Day

1st December 2006
A unique approach by a Perth research team is holding out the promise of preventing the spread of HIV-AIDS through the development of vaccines custom designed for regions around world.

Murdoch University and Royal Perth Hospital’s Centre for Clinical Immunology and Biological Statistics (CCIBS) Executive Director Professor Simon Mallal used today’s World AIDS Day to announce two new significant international research collaborations to assist its pioneering work.

“The world’s best chance of reversing and ultimately halting the HIV epidemic is to find a vaccine – our team in Perth is playing a key role in this effort,” Professor Mallal said.

“We are designing vaccines tailored to the genetics of the people and the virus which vary from nationality to nationality and country to country. This research is centred on the recognition that HIV mutates in an individual according to that person’s own DNA.”



Prof. Simon Mallal Wins Premier's Award.

At the Premier's Science Awards held at Scitech, Professor Simon Mallal, Executive Director of the Centre for Clinical Immunology and Biomedical Statistics (CCIBS) scooped the top accolade by winning the 2005 Premier's Award in Achievement in Science. This caps what has been an outstanding year in research achievements for Professor Mallal and his CCIBS Team .

The Premier's Science Award publicly celebrates, encourages and rewards the best of Western Australian scientists. The Award is a valued means of recognising excellence in science by raising awareness and creating a sense of community pride in science education and research, as well as raising the profile of science and technology endeavours in Western Australia.

Professor Mallal is in distinguished company with past recipients that include Professor Bruce Robinson, Professor Ian Ritchie and recent nobel laureate Professor Barry Marshall.



National Health and Medical Research Council funding


HIV research has been the big winner from today’s National Health and Medical Research Council funding round with a team based at Royal Perth Hospital and Murdoch University receiving more than $5.6 million.

This is the only grant awarded to WA in this funding round.

Professor Simon Mallal and colleagues at the Centre for Clinical Immunology and Biomedical Statistics in Perth are investigating a range of issues in the viral diseases HIV and hepatitis C.

In one project, they will continue their study of the genes of different strains of HIV and hepatitis C. In another, they will look at why some drugs used to treat HIV cause life threatening allergic reactions. In a third, they will investigate the role of drugs in one of the more serious complications of HIV, which is loss of fat tissue from the body.

Their overall aim is to provide the knowledge and tools so doctors can care for people with HIV and hepatitis C in a safer and more effective way.

This funding follows the $9.8 million from the Bill and Melinda Gates Foundation for the team to conduct a worldwide hunt for an HIV vaccine earlier this year.

More information is available at www.health.gov.au
Tuesday 6th July2005


 

HIV Vaccine Research Initiative Receives Grant from Bill & Melinda Gates Foundation


The latest assault against the worldwide spread of the HIV virus will be led by a team of researchers in Perth.

Scientists from the Centre for Clinical Immunology and Biomedical Statistics have received a grant of US$9.8 million from the Bill & Melinda Gates Foundation to continue their work to support the scientific community in the search for a vaccine against the HIV virus.

The Centre, which is a collaborative venture between Murdoch University and Royal Perth Hospital, has been approaching the development of an HIV vaccine from a unique angle, working with the virus’s ability to tailor itself to an individual’s immune response.

“HIV has been difficult to treat with drugs or prevent with a vaccine because of its high mutation rate,” said Professor Simon Mallal, Executive Director of the Centre.

“However, these mutations are not random; rather, they are adapting to each individual’s genetic make-up to evade the immune response.”

Dr Mallal and his team found that the virus can recognise and mutate itself to individual HLA types, which are the surface recognition molecules that act like the PIN of the individual’s immune system. “There are so many variants of the virus that eventually a mutation may appear that bypasses the HLA type of a person’s body, and then begins to replicate more successfully. So now that we understand what sorts of mutations occur in the virus against different HLA types, we are assisting groups around the world to design more effective vaccines.”

Dr Mallal is working with co-Director of Centre, statistician Professor Ian James, to develop a database of these relationships between the HIV virus and individual HLA types in different populations around the world.

The team will work to characterise HIV and human genetics with communities in Africa, China, the United States, Australia, the Caribbean and South America to allow scientists to design vaccines for those populations.

Professor Mallal is available for interview.
Wednesday 3rd March 2005



Antispam tools join fight against HIV

Computerworld interview with Dr Corey Moore: Antispam tools join fight against HIV
Thursday 4th March 2005