New and positive data for Maia Biotechnology Inc.’s lead candidate for a particularly deadly and advanced lung cancer propelled the stock modestly higher on Feb. 4. The pivotal phase II THIO-101 study of Thio, a telomere-targeting agent sequenced with Regeneron Inc.’s immune checkpoint inhibitor, Libtayo (cemiplimab), as a third-line treatment for advanced non-small-cell lung cancer (NSCLC) showed median overall survival of 16.9 months for the 22 NSCLC patients who received at least one dose of Thio in parts A and B.
With an initial €8 million (US$8.4 million) in seed funding in the bank, Tessellate Bio has emerged from stealth to tackle cancers that rely on the less well explored synthetic lethality mechanism of alternative lengthening of telomeres.
With an initial €8 million (US$8.4 million) in seed funding in the bank, Tessellate Bio has emerged from stealth to tackle cancers that rely on the less well explored synthetic lethality mechanism of alternative lengthening of telomeres.
Critically shortened telomeres are known to be a key limiting factor in successful CAR T-cell immunotherapy, with cells from older patients tending to have shorter telomeres with reduced dividing capacity. As such, these cells are unable to fully eliminate malignancies and provide durable and persistent protection against cancer. So, what if you could lengthen these DNA-protein structures found at the end of chromosomes during the ex-vivo manufacturing of CAR T cells, i.e., before they are put back into the body, so increasing their potency against disease? Newly-launched firm Telos Biotech – a subsidiary company of Cambrian Bio – believes you can, with its patent-protected recombinant protein, Telovance, promising to shake up the cell therapy field.
Critically shortened telomeres are a key limiting factor in successful CAR T-cell immunotherapy, with cells from older patients tending to have shorter telomeres with reduced dividing capacity. As such, these cells are unable to fully eliminate malignancies and provide durable and persistent protection against cancer.
Researchers from The Salk Institute have described a signaling pathway that sets off an unusual, autophagy-dependent cell death mechanism as a fail-safe for cells that have evaded senescence mechanisms. The scientists found a tumor suppression mechanism mediated by telomere signaling, which activated an innate immune response through mitochondrial and telomere complexes to eliminate cells with shortened telomeres.
Arizona State University scientists have discovered an unprecedented pathway in a fungus to produce telomerase RNA (TER) from a protein-encoding messenger RNA (mRNA). Unlike in animals and other fungi, this fungal TER is transcribed by RNA polymerase III, lacks a protective 5′ cap and it is processed from the 3′-untranslated region of an mRNA transcript. This telomerase has two essential structural domains that keep it active. For now, scientists have only observed this process in the fungus Ustilago maydis, or Mexican truffle. “In animals, and even in Ascomycota, which is another fungal phylum, the telomerase RNA is transcribed by RNA polymerase II as an independent gene. This is the only case among all different kingdoms in eukaryotes that the telomerase RNA is processed from the mRNA molecule. It is a very unusual biogenesis pathway.” Julian Chen told BioWorld.
Scientists from the University of Lisbon have described how telomeres can establish the maximum damage that a cancer cell can suffer. Above this threshold, the cell would stop dividing and die. The damage comes from the transcription of the telomeres themselves of an RNA molecule called TERRA. When TERRA’s levels increase, the cell can no longer multiply. This mechanism occurs in ALT (alternative lengthening of telomeres) cells, which do not elongate their telomeres through telomerase.
There is a project management joke that the first 90% of a project takes 90% of the time, whereas the last 10% of the project takes the other 90% of the time.
There is a project management joke that the first 90% of a project takes 90% of the time, whereas the last 10% of the project takes the other 90% of the time.
