At last: Selnoflast

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One of the most common questions I get from SoPD readers is what’s new with inflammasome research? Another version of this question is where are the clinical trials for NLRP3 inhibitors in Parkinson’s?

Readers have become very enchanted by this new class of anti-inflammatory drugs as a potential future treatment for Parkinson’s – and there is preclinical evidence to support this vibe. But the  clinical development of these experimental therapies has been slow. 

Recently, the pharmaceutical company Roche has initiated Phase 1b testing of their NLRP3 inhibitor (called Selnoflast) in people with Parkinson’s – the first in this class. 

In today’s post, we will discuss what the inflammasome is, how NLRP3 inhibitors work, and what the new clinical trial involves.

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On the 21st September 2020, the website for an Ireland-based biotech company called Inflazome suddenly disappeared. In its place was a single page, that stated the large pharmaceutical company Roche had purchased the biotech firm and taken on all of its inflammasome-targeting intellectual property (Source).

This was a big deal for folks who were watching the inflammasome research world. It suggested that the big players (pharma) were now interested in this space ($449 million interested in the case of Inflazome). And since then, there has been a rush of other pharma companies buying or developing inflammasome-targeting agents.

The Inflazome purchase was also interesting because the company was targeting Parkinson’s as one of their indications of interest.

And it would appear that Roche is now following up on this interest, having initiated a clinical trial program focused on inflammasomes in Parkinson’s.

Hang on a second. Remind me, what are inflammasomes?

Continue reading “At last: Selnoflast”

Brain. On. Fire.

 

Inflammation is part of the immune system’s response to damage or infection. It is a very natural process that our bodies undergo when we come into harms way.

Researchers at the University of Queensland, have recently demonstrated something interesting about the inflammation associated with Parkinson’s: by inhibiting a very specific part of the inflammatory process, they can reduce the spread of Parkinson’s associated alpha synuclein pathology in models of PD.

And they have developed a drug – called MCC950 – that specifically targets that component of the inflammation process which they are now seeking to test in clinical trials.

In today’s post, we will discuss what inflammation is, review this new research, and consider what it could all mean for the Parkinson’s community.

 


Spot the unhealthy cell – exhibiting signs of stress (yellow). Source: Gettyimages

No silly preamble today – this is going to be a very long post, so we’re diving straight in:

When cells in your body are stressed or sick, they begin to release messenger proteins which inform the rest of your body that something is wrong.

When enough cells release these messenger proteins, it can cause inflammation.

What is inflammation?

Inflammation is a vital part of the immune system’s response to trouble. It is the body’s way of communicating to the immune system that something is wrong and activating it so that it can help deal with the situation.

By releasing the messenger proteins, injured/sick cells kick off a process that results in multiple types of immune cells entering the troubled area of the body and undertaking very specific tasks.

The inflammatory process. Source: Trainingcor

The strength of the immune response depends on the volume of the signal arising from those released messenger proteins.

And the level of messenger proteins being released partly depends on multi-protein structures called inflammasomes.

What are inflammasomes?

Continue reading “Brain. On. Fire.”