I'm excited to be involved in the
Dundee Science Festival, my work-place's
open day and
I'm A Scientist Get Me Out Of Here over the course of what promises to be a hectic but fun November.
I'm particularly excited by the work we've done to put together a show that showcases the process of drug discovery. It was a real challenge to condense 15 years of research involving multiple scientific disciplines into a 25 minute show, but here's what we've come up with. There are still some bugs to be worked out though, so if people have suggestions I'd love to hear them. Hopefully, though, this combined with a tour of our facilities will give people the general gist of the process.
1. How Drugs Work - I'll admit we're going to cheat a little here. We plan to use the malonic acid clock reaction and pretend each turnover is a flash of pain from a mis-firing receptor. The pain is stopped by the addition of a drug (salt, in this case). In future, I'd love to make this more accurate by using an actual enzyme and its inhibitor, but my experience with enzymatic chemical reactions is non-existent. Perhaps someone out there can help?
2. Screening - We'll use the classic iodine clock reaction to illustrate how we can measure signal intensity and/or time to get information on how active our drugs are (of course, KIO3 will be our drug in this case). We'll do the reactions themselves on a large scale, but we will show off our 364-well plates to emphasise the fact we have to minaturise everything in order to efficiently screen thousands of compounds.
3. Synthesis - The reaction of cinnemaldhyde with acetone under basic conditions gives a nice yellow precipitate from a brown solution in a few seconds. I might even include an LCMS and NMR of the starting material and products to help people see how we monitor reactions.
4. Physical Properties - I've spent ages trying to find an example of an organic solid that is insoluble at acidic pH but soluble in water at basic pH. I haven't been able to find one out there, so for this run we're just going to show pH changes using universal indicator and discuss how pH effects everything from solubility, permeability and even activity. However, if someone can help me in the future with this problem I'd be grateful as I think it would make for a much more powerful demonstration.
5. Metabolism - What else but the elephant's toothpaste experiment, modified to run with yeast rather than potassium iodide as the catalyst. Simple, accurate and very visual demonstration.
If you'd like to see these experiments in action, and meet various sciences from across the College of Life Sciences in Dundee, the Open Day will be on Saturday 8th November.
I'll also be carrying out an interactive show on the chemistry of the gases at the Steeple in Dundee on Saturday 1st of November, as part of over 100 events running throughout the festival between the 1st and the 16th of November.
Secondary school students are also welcome to
quiz (and vote for) me during the I'm A Scientist event.
If at any stage I look like I'm taking part in Movember, it's because I haven't had time to shave and I apologise in advance for the scruffy 'tasche!