21.05.2013 - Dutch cancer experts have found an enzyme that seems to induce cancer senescence.
When oncogenes are activated inside a cell, they normally mobilise tumour suppressor networks which can act like a brake to cancer through a process termed oncogene-induced senescence (OIS). They withdraw proliferating cells almost irreversibly, providing protection against malignant transformation. Now, a research team led by Daniel Peeper from the Netherland’s Cancer Institute in Amsterdam has identified a metabolic gate-keeper of the process.
Using metabolic and functional analyses of melanoma cells carrying the common BRAFV600E mutation, the team of Dutch, Scottish, Belgian, Spanish, Israeli and US researchers identified the TCA enzyme pyruvate dehydrogenase (PDH) as a crucial mediator of cancer senescence. BRAFV600E-induced senescence was accompanied by simultaneous suppression of the PDH-inhibitory enzyme pyruvate dehydrogenase kinase 1 (PDK1) and induction of the PDH-activating enzyme pyruvate dehydrogenase phosphatase 2 (PDP2). The resulting combined activation of PDH enhanced the use of pyruvate in the tricarboxylic acid cycle, causing increased respiration and redox stress.
Enforced normalisation of either PDK1 or PDP2 expression levels inhibited PDH and abrogated oncogene-induced senescence. Depletion of PDK1 eradicated melanoma subpopulations resistant to targeted BRAF inhibition, and caused regression of established melanomas. The results suggest a mechanistically new therapeutic route to induce cancer senescence and stop tumour cell proliferation at its earliest stages.
04.05.2016 Barcelona-based epigenetics expert Oryzon Genomics has closed a debt funding round of €10.5m, bringing the total money raised since last year to €27m. The funds will serve to advance the company’s two LSD1 inhibitors in cancer and neurodegeneration.
03.05.2016 Ipsen is strengthening its ties to long-time development partner Oncodesign, a Dijon-based cancer treatment biotech. The French pharma is handing over the pre-clinical pharmacology for its oncology research programmes to Oncodesign.
29.04.2016 Swiss bank Group UBS has raised US$471m (€412m) for the UBS Oncology Impact Fund, which was set up to invest in early-stage cancer treatments. The money raised by the fund, nearly half of which comes from investors in Asia, is the largest amount ever raised for such a cancer investment fund.
27.04.2016 More revenue, more jobs, more financing, more R&D expenditure – all signs point towards sustainable growth in the German biotech sector. These are the results of the most recent company survey 2016, published by biotechnologie.de. The report was once again conducted alongside the biotech standards defined by the organisation for economic cooperation and development (OECD).
21.04.2016 An expert panel’s final report on the fatal drug trial earlier this year in France states that the death of one of the participants was most likely caused by the drug’s toxicity and not by any violation of the rules.
21.04.2016 For up to US$685m (€606m), Dutch ArgenX has outlicensed its human antibody programme ARGX-115 to AbbVie. The pre-clinical immuno-oncology candidate targets a protein believed to contribute to immunosuppressive effects of T-cells.
19.04.2016 British drug developer Heptares Therapeutics and mAb maker Kymab Ltd have partnered up in yet another immuno-oncology collaboration. The companies plan to discover antibody meds targeting a superfamily of receptors.
15.04.2016 Not every company is put off by the current stock market climate. Swiss biopharma company GeNeuro has gone public at Euronext Paris, raising €33m in the process. Others, meanwhile, have to find different ways to raise money.
13.04.2016 Despite political disturbances, 2015 was a good year for the biotech scene in Switzerland. Net sales increased by 5.1% to CHF5,133m and 400 additional people found jobs in the sector. As usual, the new numbers were presented at the annual Swiss Biotech Day – which set new records as well.