Scientists at Harvard Medical School have shown that in mice lacking amyloid beta (Aβ), the fundamental hallmark of Alzheimer's disease (AD), neurons died from the effect of the most harmful mutation of this neurodegenerative disease. They showed that presenilin (PS) could be behind the origin of the disease without the need for Aβ. They maintain that it is time to update theories and redirect efforts.

The risk of developing multiple sclerosis (MS) is nearly four times as high for women as it is for men. And that relative risk has increased sharply over time. In 1955, women were only slightly more likely than men to develop MS. A research team at the University of Toronto and the Oklahoma Medical Research Foundation (OMRF) has gained new insights into possible causes for this increasing disparity.

“There are hundreds of strains of bird flu, and most of them don’t infect humans, or even mammals,” Stephen Cusack told BioWorld. “There are two main reasons for that.” To be able to cause an infection, a virus “has to be able to get into the cell, and for that it needs a receptor,” Cusack said. For influenza viruses, those receptors are hemagglutinin receptors, and they differ in subtle but important ways between birds and mammals.

A strategy inspired by deficient HIV replication could be used as a treatment to reduce viral load in patients living with HIV and help control the pandemic of the retrovirus. Scientists from the University of California San Francisco want to use HIV against itself by using a parasitic version of the pathogen.

After decades of being woefully under-diagnosed and all but ignored by the biotech and pharma industry, recent advances in understanding its complex etiology could be opening the way to new treatments for endometriosis. Impetus is coming from (modest) increases in funding for basic research, such as the Biden administration’s $200 million for women’s health research and NIH grants under an ‘Advancing cures and therapies and ending endometriosis diagnostic delays’ call announced in March of this year.

Infection or cure? Scientists from Tel Aviv University and the University of Glasgow genetically modified the Toxoplasma gondii to bring a protein inside neurons. The novelty of using a protozoan that can travel from the gut to parasitize the CNS contrasts with the possibility of causing a disease. The scientists are already working on how to avoid it.

Researchers in Japan were able to transfer genes from jellyfish into common fruit flies and discovered that the transferred gene suppressed an age-related intestinal issue in the flies. The findings suggest that studying genes specific to animals with high regenerative capability like jellyfish may uncover new mechanisms for rejuvenating stem cell function and extending the healthy lifespan of unrelated organisms.

Cellular immunotherapy is the Lamine Yamal of cancer therapy. It is easy to forget how young the field is – and that as stunning as it is to watch in action already, it is still reaching its full potential. One aspect of doing so is working in a broader range of tumor types. The field made a giant step toward that goal with last week’s approval of Tecelra (afamitresgene autoleucel, Adaptimmune Therapeutics plc), the first CAR T cell to be approved for treatment of a solid tumor.

To be successful, CAR T-cells need a balance between being effective and overkill. Researchers from the University of Pennsylvania and Vittoria Biotherapeutics Inc. have eliminated the CD5 signaling pathway of their CAR Ts to prevent the immunosuppressive brake effect. In return, this improved their proliferation and antitumor activity in T cell lymphomas.

The 2024 meeting of the International AIDS Society (IAS), which is being held in Munich this week, began with the announcement of another curative bone marrow transplant. The new case brings the total number of patients cured of HIV via a bone marrow transplant up to 7 since “Berlin patient” Timothy Ray Brown became the first such person in 2007.