Another Ron Update, the metabolic trap:
- During an infection Tryptophan transported into immune cells, IDO1 gene converts Tryptophan to Kynurenine. If it gets too high however it blocks the process.
- Don't know what cells could be in this trap.
- Took this cell into yeast, Kynurenine necessary in the yeast or it couldn't grow as was only source of NAD. For small Tryptophan they grew, large amounts they did not grow. Trap thus created in yeast.
- Looking for a way to get it out of the trap. Very easy to see with yeast in a petri dish whether it grew or not. Didn't use a petri dish used a robot.
- Can they find a drug that breaks the trap?
- Investigated every FDA approved drug and they have found quite a few (39)
- But there could be problems, yeast have a drug pump and the FDA drug could be causing those to work instead. Couldn't disable them for this test.
- Deleting some drug pumps but can't do them all. Doing more assays to ensure the yeast its properly being reactivated by solving the trap not a drug pump. Once sure of that they will move onto human cells.
- Have been able to trap human cells but its a lot more work. Don't have a growth assay for this yet.
- But given they have some confidence they could take a low side effect low toxic drug and a volunteer and try one or more of these drugs under their doctors care.
- Lots of problems with their robotics, old software. One part used a palm pilot knock off, had to find a new on ebay. Months of trying to understand and fix the problem. 20 year old robotics. Too expensive to replace it all.
- Doesn't want to release the names of the drugs because patients will try them (you bet your arse we will!), some of them are really interesting apparently.
- Chance some of the yeast results are artifacts, ideally if they can get the short list down to 10 for human cells that will make it easier as 39 is a lot of experimentation. This team is busy with other ME/CFS research so they can't do both and it sounds like the human cell people are specialists and in high demand.
- Could do with more researchers and specialists. Lost their star technician to better pay.
- Funded by a name I can't quite catch, François and patients.