Antitumor immunotherapy has notched big wins, but in a small proportion of patients. And one possible explanation for why is that approved immunotherapies are not yet planting their flag on most of the battlefields where tumors and the immune system engage in combat. At the opening AACR 2023 plenary session, Ralph DeNardo celebrated the successes of the current, mostly T-cell-based approaches,  but also encouraged his colleagues to think more broadly about the antitumor immunity.

With the backing of €2 million (US$2.17 million) in seed funding from venture capital company Adbio partners, French biotech Calida Therapeutics hopes that drawing on some U.S. academic research into thrombo-inflammatory disorders will enable it to develop a series of monoclonal antibodies.

Partially blocking a receptor that helps regulate the activity of the inflammatory cytokine molecule interleukin-6 (IL-6) seems to promote tissue regeneration and block degeneration in a model of osteoarthritis. As reported in the March 22, 2023, issue of Science Translational Medicine, the receptor, called glycoprotein 130 (gp130), regulates both positive and negative inflammatory responses that can help regenerate tissue, but also cause degeneration.

Selecta Biosciences Inc. and Swedish Orphan Biovitrum AB unveiled top-line phase III data from the Dissolve I and II trials testing SEL-212 in adults with chronic refractory gout (CRG) – results that position the companies for a regulatory filing in the U.S. during the first half of next year. SEL-212 could take on Horizon Therapeutics plc’s Krystexxa (pegloticase), a pegylated uric acid specific enzyme cleared by the U.S. FDA for CRG in September 2010.

A deficiency in fumarate metabolism could be behind a new mechanism of inflammation mediated by mitochondrial DNA and RNA. Two independent and simultaneous studies described how the accumulation of fumarate in the mitochondria released the genetic material of this organelle through vesicles, activating an inflammatory signaling pathway.

Transthera Sciences Inc., a Nanjing, China-based company developing small-molecule therapies in cancer, inflammation and cardiovascular disease, raised ¥260 million (US$38 million) in a series D+ funding round to advance its first drug product.

An international team of researchers has created two bat stem cell lines that reveal an unusual number of viral sequences in bat cells compared with those of other mammals. Writing in an article posted online Feb. 21, 2023, in Cell, the scientists suggested that the unusual amount of viral genetic material found in the bat stem cells could explain why these mammals are largely unaffected by most viral infections, despite being able to transmit them.

Aqilion AB has sold rights to its TAK1 inhibitors to Merck KGaA in an exclusive license and research collaboration agreement worth at least €960 million (US$1.03 billion) including potential milestones and royalties. The global giant will pay the Swedish biotech – which is headquartered in Helsingborg – €10 million in cash up front for the program and potential development and commercialization milestones and tiered royalties on worldwide net sales of more than €950 million.

In a blow to Aussie regenerative medicine company Regeneus Ltd., Japan’s Kyocera Corp. has pulled out of a licensing deal for Regeneus’ lead mesenchymal stem cell (MSC) therapy, Progenza, for osteoarthritis of the knee for the Japan market. Osteoarthritis of the knee is the first indication for Progenza, an allogeneic off-the-shelf adipose-derived MSC therapy.

The first in vivo cell atlas of senescent tissue in skeletal muscle has identified the damaging properties of these cells and explained why they block muscle regeneration. According to a study at Pompeu Fabra University led by scientists from Altos Labs Inc., cell damage caused the senescence of the cells, which secreted toxic substances into the surrounding microenvironment, causing fibrosis and preventing tissue regeneration.