RE: Horrible memories...5 Oct 2023 10:44
Hi Fred,
Here's my take on the current situation.
First, some historical context; Reneuron have gone from aiming to treat single disease indications (requiring long and expensive trials, in our case for stroke and RP) to a platform technology. Expensive trials can kill small biotechs...see Codiak. Chucking stem cells/pre-cursor cells loosely in to an area and hoping they magically self organise and survive, we now know, was asking too much of the little cellular blighters. They were best guesses at the time, so I can't fault them for at least trying. We have learned that putting a baby in an old people's home does not make everyone in it young again! But the science has moved forward rapidly since. Who knew 20 years ago that there was a cell-to-cell communication network that pre-dates the rise of multi-cellular organisms or that cellular clocks could be reversed?
The company's m.o. has mutated into providing shuttlebuses aka exosomes for potentially pre-existing and new therapeutic payloads to specific structures in the body. Why is this homing to certain areas so important? Many many drug trials have failed and will continue to fail due to off-target toxicity. So many Phase 1, 2, & 3 trials have flunked – think of the lost lives, billions of dollars and personal reputations ruined over the decades because of adverse events during trials. The sad thing is that many therapeutic molecules themselves were shown to be very effective at treating the diseased cells in vitro but this came at a too higher price in terms of side effects (toxicity) when put in to human volunteers. What if some of these drugs/molecules could be sent exclusively to their intended target? That's a very big win if it can be pulled off...and why I'm interested in this company.
Reneuron's history in stem cell technology is not a complete waste of time and effort, far from it, imo. They have a stem cell line that has been immortalised and can give rise to many pre-cursor cell lines which are, in turn, immortal. Without this immortalisation cellular aging issues will likely kick in and screw things up. I suspect many other stem cell candidates do not have this valuable characteristic. They have also been shown via stem cell implantation to be safe in humans (stroke and RP trials) which is obviously an important consideration for therapy credibility when considered by a regulatory body.
It's at the pre-cursor cell point at which specificity (ie. tissue targeting) comes in to play. These need to produce, amongst other things, a consistent and reliable output (of homing exosomes) in order to be considered by pharma for industrial processes and reliable treatments. That is why the immortalised cell IP is necessary and so valuable along with the tissue targeting properties. Both are essential in my view.
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