Global HIV vaccine closer to reality

October 25, 2013

Global_HIV
Washington, Oct 25: Scientists have found that bioinformatically optimised HIV vaccine antigens may help design a global HIV vaccine.

A scientific team led by Beth Israel Deaconess Medical Center (BIDMC) conducted the study in monkeys.

"A global HIV vaccine would offer major biomedical and practical advantages over most other HIV vaccine candidates, which are limited to certain regions of the world," said lead author Dan H Barouch, Professor of Medicine at Harvard Medical School.

"To our knowledge, this study represents the first evaluation of the protective efficacy of a candidate global HIV antigen strategy in nonhuman primates," said Barouch.

Researchers demonstrated for the first time that mosaic HIV vaccine antigens can afford partial protection in rhesus monkeys against challenges with a stringent simian-human immunodeficiency virus.

These mosaic vaccine antigens have been developed for optimal immunologic coverage of global HIV diversity.

Barouch and his team studied the immunogenicity of HIV mosaic Env/Gag/Pol antigens administered to monkeys using viral vectors. Env, Gag, and Pol are three major HIV proteins.

After immunisation, the monkeys were repetitively exposed to multiple simian-human immunodeficiency virus challenges and the investigators evaluated the ability of the vaccines to block infection.

Although most animals immunised with the mosaic HIV vaccine became infected by the end of the study, the researchers observed an 87 to 90 per cent reduction in monkeys' probability of becoming infected each time they were exposed to the virus.

In contrast, monkeys that received sham vaccines became infected more quickly.

"These findings indicate that these optimised vaccine antigens can afford partial protection in a stringent animal model," said Barouch.

The investigators found that the immunised monkeys mounted antibody responses against diverse strains of HIV noting, "protection was dependent on several different types of antibody responses, suggesting that the coordinated activity of multiple antibody functions may contribute to protection against difficult-to-neutralise viruses."

The monkeys also mounted cellular immune responses to multiple regions of the virus.

"These data suggest a path forward for the development of a global HIV vaccine and give us hope that such a vaccine might indeed be possible," said Barouch.

"We are planning to advance this HIV vaccine candidate into clinical trials next year," he added. The study was published in the journal Cell.

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News Network
November 13,2024

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New Delhi: The Supreme Court took a firm stance on ‘bulldozer justice’ today, affirming that the Executive cannot bypass the Judiciary and that the legal process must not prejudge the guilt of an accused. In a significant judgment, the bench led by Justices BR Gavai and KV Viswanathan set new guidelines for demolition practices, responding to petitions challenging the controversial bulldozer actions taken against individuals accused of crimes.

The rise of this practice, termed 'bulldozer justice,' has seen authorities in various states demolish what they claim to be illegal structures belonging to accused individuals. However, multiple petitions questioned the legality and fairness of this approach, bringing the matter before the court.

Justice Gavai highlighted that owning a home is a cherished goal for many families, and an essential question was whether the Executive should have the authority to strip individuals of their shelter. “In a democracy, the rule of law protects citizens from arbitrary actions by the state. The criminal justice system must not assume guilt,” stated the bench, underscoring that due process is a fundamental right under the Constitution.

On the principle of separation of powers, the bench reinforced that the Judiciary alone holds adjudicatory powers and that the Executive cannot overstep these boundaries. Justice Gavai remarked, “When the state demolishes a home purely because its resident is accused of a crime, it violates the doctrine of separation of powers.”

The court issued a strong warning about accountability, stating that public officials who misuse their power or act arbitrarily must face consequences. Justice Gavai observed that selectively demolishing one property while ignoring similar cases suggests that the aim might be to penalize rather than enforce legality. “For most citizens, a house is the product of years of labor and dreams. Taking it away must be an action of last resort, thoroughly justified,” he said.

In its directives under Article 142 of the Constitution, the Supreme Court established new demolition guidelines. These include:

Mandatory Show-Cause Notice: No demolition should occur without first issuing a show-cause notice. The person served has a minimum of 15 days or the duration stated in local laws to respond.

Transparency of Notice Content: The notice must include specifics about the alleged unauthorized construction, the nature of the violation, and the rationale for demolition.

Hearing and Final Order: Authorities are required to hear the response of the affected individual before issuing a final order. The homeowner will have 15 days to address the issue, with demolition proceeding only if no stay order is obtained from an appellate authority.

Contempt Proceedings: Any breach of these guidelines would lead to contempt proceedings. Officials who disregard these norms will be personally accountable for restitution, with costs deducted from their salaries.

Additionally, the court mandated that all municipal bodies establish digital portals within three months, displaying show-cause notices and final orders on unauthorized structures to ensure public transparency and accountability.

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News Network
November 15,2024

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Union minister Amit Shah on Friday, November 15, said PM Narendra Modi will amend the Waqf Act despite opposition from leaders like Uddhav Thackeray and Sharad Pawar.

"Modi ji wants to change the Waqf Board law, but Uddhav ji, Sharad Pawar and Supriya Sule are opposing it," Shah said, addressing a rally at Umarkhed in Maharashtra's Yavatmal district.

"Uddhav ji, listen carefully, you all can protest as much as you want, but Modi ji will amend the Waqf Act," he said. Shah said there are two camps in the November 20 Maharashtra assembly polls, one of 'Pandavas' represented by the BJP-led Mahayuti and the other of 'Kauravas' represented by Maha Vikas Aghadi.

"Uddhav Thackeray claims that his Shiv Sena is the real one. Can the real Shiv Sena go against renaming Aurangabad to Sambhajinagar? Can the real Shiv Sena go against renaming Ahmednagar to Ahilyanagar? The real Shiv Sena stands with the BJP," Shah said.

"Rahul Baba used to say that his government would credit money in the accounts of the people instantly. You were unable to fulfil your promises in Himachal, Karnataka, and Telangana," he said.

Shah said the Mahayuti alliance has promised that women will get Rs 2,100 per month under the Ladki Bahin Yojana. "Kashmir is an integral part of India and no power in the world can snatch it away from us," Shah said.

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News Network
November 11,2024

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The Manipur Kuki MLAs have released a statement calling out Solicitor General Tushar Mehta's 'lies' in the Supreme Court. In a joint statement, the MLAs, including those from the Bharatiya Janata Party, said they had not had any meeting with the Chief Minister since May 3, 2023, nor did they intend to meet him in the future as “he was the mastermind behind the violence”.

As per the MLAs, the SG lied about state CM N Biren Singh speaking to Kuki MLAs to control the situation there, in order to halt a Supreme Court probe into the leaked tapes which allege that Singh has been complicit in the violence that broke out between Kukis and Meitis there.

"We...clarify that we have never had any meeting with Chief Minister, Shri N. Biren Singh since May 3, 2023, nor have any intention to meet him in future as he is the mastermind behind the violence and ethnic cleansing of our people from the Imphal valley, which is continuing till today, the latest being the brutal killing and burning of Mrs Zosangkim Hmar on November 7, 2024," the letter read, while condemning the recent 'barbaric' killing of the woman there, and noting the SG's assertion is 'tantamount' to misleading the top court.

“We, the undersigned ten MLAs, have come to know that during the Supreme Court hearing held on November 8, 2024, the Solicitor General of India submitted that ‘CM is meeting all Kuki MLAs and trying to bring the situation down to get peace’. In this connection, we hereby categorically state that this submission is a blatant lie and tantamount to misleading the Hon’ble Supreme Court of India,” the statement said.

The Supreme Court, while hearing a petition by a Kuki organisation, asked that it submit audio tapes to substantiate its claim that the Chief Minister was instrumental in inciting and organising violence in the northeastern State.

Solicitor-General Tushar Mehta orally informed the court that the Chief Minister was meeting all the Kuki-Zo MLAs and that peace in the State had come at a huge cost.

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