Antigen News and Research

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Functional impairment of HIV-specific T cells precedes aborted virus control

HIV is a master of evading the immune system, using a variety of methods to prevent the body from being able to find and kill it.

13 Sep 2021

Researchers identify the spleen as primary site for priming of 'killer' T cells during influenza infection

CD8+ T cells - known as "killer" T cells - are the assassins of the immune system. Once they are primed, they seek out and destroy other cells that are infected with virus or cells that are cancerous.

12 Sep 2021

Tumor-related risk factors affect conversion of active surveillance to treatment for prostate cancer

For men with "low-risk" prostate cancer initially managed with active surveillance, cancer-related factors such as tumor grade and size are key risk factors for conversion to active treatment, reports a study in The Journal of Urology®, an Official Journal of the American Urological Association.

10 Sep 2021

Virus-like nanoparticle vaccine effective against SARS-CoV-2 in animal model

A COVID-19 vaccine, created from a virus-like nanoparticle that displays SARS-CoV-2 spike protein RBDs, effectively protects animal model from infection.

10 Sep 2021

New vaccinia-based COVID-19 vaccine candidate induces robust, durable immune responses

Researchers in Australia have developed a coronavirus disease 2019 (COVID-9) vaccine that induced robust and long-lived humoral and cellular immune responses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in both young and aging mice.

8 Sep 2021

Interorgan network plays an essential role in maternal antibody transfer through breastfeeding

Breastfeeding offers an array of benefits for mothers and newborns. Maternal antibodies are transferred via breastfeeding, protecting the gastrointestinal tracts of babies from several pathogen-caused infections.

8 Sep 2021

Highly neutralizing human convalescent plasma reduces lung inflammation in SARS-CoV-2-infected macaques

A new study reignites the debate regarding the therapeutic utility of convalescent plasma in treating others with the COVID-19.

7 Sep 2021

Severe COVID-19 is associated with expansion of immature myeloid cells and inflammation

A team of scientists in Ireland recently identified certain immune markers that can predict the progression of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection to severe coronavirus disease 2019 (COVID-19). Early detection of these predictive markers can facilitate therapeutic decision-making prior to peak severity.

7 Sep 2021

Implications of persistent SARS-CoV-2 infection in patients with lymphoid malignancies

In a recent study, scientists attempt to understand persistent COVID-19 and its implications in patients with hematologic malignancies.

6 Sep 2021

Mystery deaths of children blamed on insanitary conditions and poor resources in India

While authorities in Uttar Pradesh are narrowing down on dengue as the 'mystery disease' behind the deaths of more than 50 people, mostly children, in the last fortnight, they are not ruling out scrub typhus or other monsoon-related infections.

6 Sep 2021

Post-exposure prophylaxis with monoclonal antibodies may reduce health system burden in the US

In a study conducted at the University of Washington, USA, the researchers assert that post-exposure prophylaxis with monoclonal antibodies could improve the clinical outcomes and health system costs regarding coronavirus disease (COVID-19). The study is currently available on the medRxiv* preprint server.

6 Sep 2021

CAR T cells expressing a natural RNA can activate the body’s own T cells against solid tumors

Chimeric antigen receptor (CAR) T cell therapy, which uses engineered T cells to treat certain types of cancers, has often been a challenging approach to treating solid tumors. CAR T cells need to recognize a specific target on cancer cells to kill them.

2 Sep 2021

Study shows bacille Calmette-Guérin vaccine can protect mice against lethal SARS-CoV-2 challenge

A recent US study, currently available on bioRxiv* preprint server, implies that vaccination with bacille Calmette-Guérin (BCG) can limit the infection with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by targeting innate immune pathways and could thus be used as a platform for pinpointing early immunologic events affecting the outcome of coronavirus disease (COVID-19).

1 Sep 2021

Post-infection vaccination produces potent neutralizing antibodies against SARS-CoV-2 variants

The best protection against new SARS-CoV-2 infections or reinfections may be obtained by a combination of vaccine-elicited and infection-induced antibodies.

31 Aug 2021

Durability of cellular immune memory to SARS-CoV-2 after mRNA vaccination

A recent study, available on the bioRxiv* preprint server, investigated the durability of cellular immune memory after mRNA vaccination against SARS-CoV-2 and whether booster jabs affect the durability of different immune response components. The study included testing for antibodies and cellular immune responses in covid patients and recovered individuals.

31 Aug 2021

Will mRNA vaccine boosters be required for SARS-CoV-2 variants?

A new study shows that the highly effective mRNA Moderna vaccine designed against the original SARS-CoV-2 strain may lose some efficacy as new variants arise.

30 Aug 2021

Sustained and effective response to Janssen COVID-19 vaccine Is enhanced by delayed booster

A new study adds to the data on the optimum interval between the first and second doses of the adenovirus vectored COVID-19 vaccine.

30 Aug 2021

Polymeric and lipid nanoparticles in self-amplifying RNA vaccines result in higher protein expression and immunogenicity

Self-amplifying RNA (saRNA) is an advanced platform for nucleic acid vaccine development. The backbone is typically derived from an alphaviral genome and encodes a gene of interest (GOI) and a viral replicase that can amplify the genomic and subgenomic RNA.

30 Aug 2021

Next-gen COVID vaccine to make persistent neutralizing antibodies

Presently, there is a need to develop improved versions of COVID-19 vaccines that are effective against the SARS-CoV-2 variants of concern (VOC) and can confer long-term protection. Considering the need of the hour, scientists from the University of Sydney in Australia have generated a new COVID-19 vaccine CoVac-II and evaluated its effect against COVID-19 strains. The findings from this study are published on the bioRxiv* preprint server while awaiting peer review.

30 Aug 2021

Can molecular mimicry impact fertility in female COVID-19 patients?

There exists a possibility that COVID-19 can also affect the reproductive function in the body, which can lead to infertility in infected patients. A study published in the American Journal of Reproductive Immunology explored the impact of SARS-CoV-2 infection on reproductive functions and fertility.

30 Aug 2021

Antigen News and Research

Functional impairment of HIV-specific T cells precedes aborted virus control

Researchers identify the spleen as primary site for priming of 'killer' T cells during influenza infection

Tumor-related risk factors affect conversion of active surveillance to treatment for prostate cancer

Virus-like nanoparticle vaccine effective against SARS-CoV-2 in animal model

New vaccinia-based COVID-19 vaccine candidate induces robust, durable immune responses

Interorgan network plays an essential role in maternal antibody transfer through breastfeeding

Highly neutralizing human convalescent plasma reduces lung inflammation in SARS-CoV-2-infected macaques

Severe COVID-19 is associated with expansion of immature myeloid cells and inflammation

Implications of persistent SARS-CoV-2 infection in patients with lymphoid malignancies

Mystery deaths of children blamed on insanitary conditions and poor resources in India

Post-exposure prophylaxis with monoclonal antibodies may reduce health system burden in the US

CAR T cells expressing a natural RNA can activate the body’s own T cells against solid tumors

Study shows bacille Calmette-Guérin vaccine can protect mice against lethal SARS-CoV-2 challenge

Post-infection vaccination produces potent neutralizing antibodies against SARS-CoV-2 variants

Durability of cellular immune memory to SARS-CoV-2 after mRNA vaccination

Will mRNA vaccine boosters be required for SARS-CoV-2 variants?

Sustained and effective response to Janssen COVID-19 vaccine Is enhanced by delayed booster

Polymeric and lipid nanoparticles in self-amplifying RNA vaccines result in higher protein expression and immunogenicity

Next-gen COVID vaccine to make persistent neutralizing antibodies

Can molecular mimicry impact fertility in female COVID-19 patients?

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