Complex Chronic Illness-The New Roadmap

Why the Lights at the End of the Chronic Illness Tunnels are Growing Brighter

I need a break from my Trump Derangement Syndrome. So no politics today. Instead let’s go for a stroll through a few tunnels and take a look at some truly elegant science.

For years, the search for answers regarding the etiology and pathophysiology of complex chronic illnesses like ME/CFS and Long COVID focused on discovering a single “broken step”, be it genetic, metabolic, immunologic. If we could just find the one gene, the single virus, or the lone biomarker, the entire mechanism would reveal itself.

Of course, I should qualify this first sentence: for decades there was essentially zero funding for complex illness research, ie ME/CFS. We can thank the Covid Pandemic for opening up the funding spigot and producing results, in the same way that the HIV crisis launched a new era in viral and immunologic research. Every cloud has a silver lining.

Anyhow, back to the present. I call it Complex Illness because there is no single, neat, satisfying answer and searching for that answer is a scientific trap. These are systemic, global illnesses with many pathological puzzle pieces all interacting with each other. There is crosstalk as the pathologies are bidirectional resulting in disruption of system homeostasis and multi system dysfunction.

As the pace of global clinical research accelerates, the data is revealing the complexity of this constellation of post infectious fatiguing illnesses. There is a profound amount of light ahead, but it is not peeking out from a single tunnel. Instead, we are looking at a network of distinct, interconnected pathways creating a new roadmap for further research, diagnosis, and management.

To make sense of this network, it is important to stop viewing these conditions as individual biologic system failures or silo failures. Complex illness does not evolve one organ system at a time. A more accurate and productive way to understand this is to realize that the pathology is occurring at the molecular level, the cellular level, the organelle level.

Ok, we’re going to dive deeper and it can get complicated and dense. Stay with me. Take notes. Ask questions.

The Biologic Firewall—Dr. Robert Naviaux and the Cell Danger Response (CDR)

To understand how this firewall works, we have to look at the groundbreaking framework proposed by Dr. Robert Naviaux at UC San Diego: The Cell Danger Response (CDR).

Naviaux’s work fundamentally shifts how we view chronic pathology. He posits that when a cell is subjected to a severe infectious (viral, bacterial, parasitic, fungal) or environmental threat, it triggers an evolutionarily conserved metabolic defensive response. The cell stops acting like a peaceful, productive citizen and shifts into war-time defense mode. It hardens its outer membranes, halts normal communication with its neighbors, downregulates oxidative phosphorylation (mitochondrial energy production of ATP), and releases signaling molecules to sound the alarm.

This is the ultimate biological firewall. It is an active, highly coordinated lockdown designed to contain danger and preserve the life of the organism.

The catch? If the cell cannot safely transition through the natural phases of healing to turn the response off, the system gets stuck in a chronic CDR loop. The profound exhaustion, cognitive clouding, and exercise intolerance are not signs of a body that has broken down—they are the intended features of a cellular firewall that refuses to lower its guard. It is the double edged sword of the evolutionary mantra “survival of the fittest.

I am not doing justice to Dr. Naviaux’s work. It is a new paradigm, a new vision of health and illness. It is worth the effort to understand and I urge you to take a look at these two links.

https://www.sciencedirect.com/science/article/pii/S1567724919302922?via%3Dihub

https://naviauxlab.ucsd.edu/science-item/healing-and-recovery/

Tunnel 1: The Bioenergetic and Cellular Lock (WASF3 & SMPDL3B)

Hang on now and fasten your seat belts. It’s biochemistry time.

If the biological firewall wants to isolate a system under threat, its first priority is to throttle the energy grid and tighten cell membranes. Two monumental research threads have mapped exactly how this happens at the molecular level, opening up the possibility of targeted therapeutic strategies.

Mitochondrial Throttling (The WASF3 Pathway)

Dr. Paul Hwang’s team at the National Institutes of Health (NIH) may have pulled back the curtain on the mechanics of post-exertional malaise (PEM). His team identified that endoplasmic reticulum (ER) stress causes an over expression of a protein called WASF3.

His work is a perfect example of the power and mystery of science. Power because it can improve our lives (and maybe save the earth). And mystery because the meticulous work of discovery can unravel the mysteries around us. Of course this is precisely what Trump and his despicable sycophants are trying to destroy. But I digress and promised no politics. Sorry.

So, back to discovery and a preview of what’s to come. To quote from Dr. Hwang’s paper: “We report that overexpression of Wiskott-Aldrich Syndrome Protein Family Member 3 (WASF3), here identified in a 38-y-old woman suffering from long-standing fatigue and exercise intolerance, can disrupt mitochondrial respiratory supercomplex formation and is associated with endoplasmic reticulum (ER) stress.”

Acute Infection (The Trigger)

During an acute infection or other toxic exposures there is a rapid influx of proteins that can cause immediate, severe ER stress. Under normal circumstances, the cell utilizes a process called the Unfolded Protein Response (UPR). The UPR works to resolve the stress or triggers apoptosis to destroy the cell while the immune system mobilizes and acts to contain and/or kill the infectious organisms.

Chronic Infection (The Permanent Glitch)

Evolution is a two way street. There’s that damn double edged sword again. Those microbes evolved also. Their goal, like ours, is survival. And so, with each random mutation that occurs a virus may develop the means to hide from our immune system, evade detection and play the long game. Other mutations may allow the organism to shanghai our immune defenses and take control, or even systematically destroy critical weapons. That is the HIV story, taking control of a specific T cell called the CD4 cell and slowly killing them off leaving the patient literally defenseless against an array of opportunistic infections.

The WASF3 Connection

Under normal conditions, WASF3 is a structural protein involved in regulating cell motility. Acute ER stress and the UPR elevate another ER chaperone protein called GRP78 (BiP). GRP78 stabilizes and upregulates WASF3, temporarily increasing its levels. This all works well for cell defense as the immune system does its thing.

But when an infection fails to clear properly or leaves behind persistent, low-grade cellular inflammation, this is when WASF3 plays its most destructive role.

Then the UPR activation persists. Instead of turning off after the acute phase, the ER remains under chronic stress.This prolonged ER stress continuously forces the overproduction of the WASF3 protein. Flooded with WASF3, the protein migrates from the ER to the mitochondria. It physically interacts with another protein, ATAD3A, which anchors it to the mitochondrial membrane.

The Functional Consequence: Energy Failure

Once trapped in the mitochondria, WASF3 disrupts the assembly of respiratory supercomplexes (specifically Electron Transport Complex III and IV). These complexes act like an electrical grid to generate ATP (cellular energy). Excess WASF3 acts like an out of control brake on the mitochondria, reducing mitochondrial oxygen consumption and ATP production.

By choking this grid, WASF3 causes:

• Hypoxia & Low Oxygen Consumption Cells cannot efficiently use oxygen to make energy and ATP production plummets.

• Exercise Intolerance: Muscles become easily fuel deprived. Their mitochondria cannot synthesize enough ATP to keep up with the demand of active muscles. The result? Exercise intolerance, fatigue, exhaustion, and a possible contributor to the phenomenon of Post Exertional Malaise (PEM) and even brain fog.

As you think about this, keep in mind that the brain, skeletal muscle, and the heart are organs with some of the highest densities of mitochondria. They are fuel guzzlers and depend on high levels of ATP synthesis.

WASF3 May Be a Druggable Target

The NIH study proved this directional link by treating cells with Salubrinal, an experimental drug that reduces ER stress. Lowering the ER stress successfully reduced WASF3 levels, restored mitochondrial supercomplexes, and brought energy production back to normal. Voila!

Read that again: at the molecular level, homeostasis was restored, ATP production restored.

Unfortunately, Salubrinal is not an approved drug. However there is drug that has been FDA approved for 30 years. Phenylbutyrate is used to treat patients with chronic urea cycle disorders, a relatively rare condition. Interestingly, it has also been approved as a treatment for Amyotrophic Lateral Sclerosis (ALS).

In ALS, Phenylbutyrate protects nerve cells from premature death. It functions as a chemical chaperone to reduce intracellular stress and does this by targeting protein buildup and mitochondrial dysfunction.

In the setting of WASF3 disrupted mitochondrial function, Phenylbutyrate, acting as a stress reducing chemical chaperone, lowers endoplasmic reticulum stress and thereby reduces WASF3 levels. The brakes inhibiting mitochondrial electron transport function are shut down and ATP synthesis is returned to normal.

We know it has a role in the treatment of ALS but it has not been used in patients with ME/CFS and Long Covid. That is the next step. There are no approved drugs for these diseases. There are no treatment guidelines and there is no evidenced based medicine.

But we can use approved drugs off label, we can act on the evidence from the laboratory, from the biochemistry, and from the use in ALS. We know the risks (very low) and potential benefits. And most importantly we have no root cause treatments for the profound fatiguing, disabling, life altering illnesses our patients are experiencing.

Hopefully, we will build a library of anecdotal reports on the use of Phenylbutyrate as randomized clinical trials are organized. We, as clinicians dedicated to the care of patients with these complex illnesses need to consider our options and move forward.

Whew. I hope you are still with me. I had planned to move on to another molecular discovery but will publish that in my next Substack post.

For those of you who wanted dive deeper, this is Dr. Hwang’s paper: https://www.pnas.org/doi/10.1073/pnas.230273812

Please send me your comments and questions. Please subscribe and share. And I must conclude by saying what a relief it is for me to spend time talking about the elegant beauty of science and evolution rather than the endless corruption and destruction of our democracy. I certainly needed a break.