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Holobionts: a new Paradigm to Understand the Role of Humankind in the Ecosystem

You are a holobiont, I am a holobiont, we are all holobionts. "Holobiont" means, literally, "whole living creature." It ...

Showing posts with label Cancer. Show all posts
Showing posts with label Cancer. Show all posts

Tuesday, January 10, 2023

The tragedy of science: we cannot fault the tiger for being the tiger




Vinay Prasad is a young researcher in oncology who recently published the post reproduced below on his blog. It is about how oncology has become a field whose main purpose is mainly to enrich companies and practitioners. The tragedy of these reflections is that they apply just as well to many other fields of science. And it is sad to think that science started as a disinterested search for truth, and then it was turned into an ideological shield for criminal activities. Correctly, Vinay Prasad says that we cannot fault corporations for aiming at profits (we cannot fault the tiger for being the tiger). But we can fault the whole health system built with the purpose of making money instead of helping patients. Vinay Prasad's most recent book (2020) is titled "Malignant". I am reading it. It was already rather dark, but not as pessimistic as his latest post. 

Here are some excerpts from Vinay Prasad's text, you can look at the complete text on his blog:

I started my journey into cancer medicine more than 10 years ago, and it has been joyous and tragic, fulfilling and frustrating, all at once and often on the same day. Recently, I returned from our latest conference, and I had a chance to think about that experience a few days later in the mountains of the Sierra Nevadas. My conclusion is grim.

....

The tragedy in oncology is that we have dismantled the system that is meant to tell real innovation from pseudo-innovation. Almost no one understands the problem, even few care about fixing it, and instead most hope to fatten themselves of the riches, while the opportunity exists. Meanwhile, we have entirely lost sight of the goal— the purpose of our task. We have forgotten that this is about helping people sick and dying of cancer live long and live better. That goal is lost.

10 years ago, I believed that, as a younger generation swept through, reform would be inevitable. 10 years later, I see how naive I was. For every young person who understands the problem, there are 9 more salivating at the idea of becoming the next key opinion leader, eagerly going to advisory boards or pharma-sponsored dinners. Every young person who speaks out publicly is advised by colleagues or their boss to stop talking. Some are even told not to (or fearful of) retweeting critical content like mine or Aaron Goodman’s.

.......

Academic leaders. This category contains some massive failures. We have ‘leaders': who are pocketing 10s of thousands from Pharma and defending their (failed) products. What am I to think when the company behind Melflufen hires a leading academic to defend a garbage subgroup analysis at the ODAC? What am I to think when university after university enters into financial arrangements with companies? Pushing back on corporatism is impossible, when you are on the payroll.

Journals and professional societies. Many journals block critical commentary. Many organizations sell out their professional conferences to Pharma. These institutions are now so dependent of Pharma largess that they are powerless to say anything. Only a few voices inside these organizations keep them from toppling into complete advertisements.

Junior faculty. The vast majority are busy running uncontrolled trials that will not help anyone (most uncontrolled trials can’t even answer a useful question). Many have joined ad-boards, etc. Some are studying important topics but have nothing novel to add. An abstract on health disparities that shows… health disparities. Except the solution remains unclear, and the authors think all that is needed are more expensive, mediocre drugs. Cookie cutter projects is another weak spot. If you don’t have a novel idea, it’s ok to think for a while— rather than follow the path of least resistance.

Oncology press. A cottage industry of rag publications cover oncology. They are almost entirely funded by pharma or it’s ads, and they have no critical coverage. Even oncology podcasts are upwardly biased. This is not journalism, but advertisement.

The Industry. The group that I have the least quarrel with is pharma itself. We cannot fault the tiger for being the tiger. Instead, it is the aforementioned entities who have let their guard down. The tiger has a moral obligation to make profit. We were the ones who did not incentivize the right things.

......

How will it end?

Internal reform is not possible. Too many people benefit from the status quo. Reform will come from government regulation— and must come from the USA— that tilts incentives to what matters. I will continue to write, podcast and publish on the flaws of cancer medicine, but going forward, I will spend more time strategizing on political solutions to this problem.

Meanwhile, I won’t forget the goal of oncology: to help people with cancer live as long and as well as possible, using as few drugs as possible, and, pushing for the best evidence to guide those choices. Perhaps we should all have to take that oath.


Monday, October 3, 2022

New Mysteries of the Human Microbiome: Cancer and Fungi

 


The idea that cancer is caused by a fungus, or that it may even be a form of fungus has been proposed by the Italian physician Tullio Simoncini. His ideas have been thoroughly demonized and Simoncini himself has seen his license of practicing medicine revoked. 

Now, don't make me intervene in a matter of which I know very little and, for sure, I am not saying that Simoncini is right. I am just noting that, after what we saw happening with the COVID19 story, the demonization of everything which is not "official" in medicine should be taken with a lot of caution.

The thing which I think matters is how complicated things are in everything that has to do with human health. Cancer is normally described as a mutation that makes cells lose their discipline and start reproducing wildly. Things are not so simple as that, I think. The human body has defenses that can rapidly get rid of any rogue cell and it is strange that these defenses become ineffective when dealing with tumors. And, indeed, the story of cancer growth is much more complicated than that. 

Simoncini may have had an interesting intuition when he proposed an important role of fungi in human cancers. You can read the story in this recent paper

https://www.cell.com/cell/pdf/S0092-8674(22)01127-8.pdf

which is structured as a headache machine from the first ten lines of text. Nevertheless, I think the point it makes is clear: all the cancer types the authors studied had some fungi associated with them. That is a new piece of information that goes in parallel with the fact that cancers also harbor special bacteria. What is the role of this microbiome? Nobody knows and, correctly, the authors state that "they have not established causation," even though it seems that the presence of fungi is, sometimes, associated with more aggressive cancers.  

I think it is possible to say that cancers are holobiont-like assemblies of cells, bacteria, and fungi. If they are, that could explain their resilience and their stubbornness. Holobionts are machines that optimize their own survival, and, in this case, it is unfortunate that the cancer holobiont doesn't seem to care about the survival of its host. Maybe, in the future, we'll learn more about this subject and perhaps we'll find a way to exploit this knowledge to help people who are struck by cancer. For the time being, we can be awed, as usual, at the incredible complexity of life in all its forms. 


More discussions on cancer and fungi at

https://www.algora.com/Algora_blog/2022/10/02/7787

https://www.nature.com/articles/d41586-022-03074-z

https://www.healthline.com/health/is-cancer-a-fungus




Monday, August 31, 2020

Cancer and holobionts: is there a link?

 

Image from Vyshenska et al, 2017


I have been studying the work on cancer of the Italian researcher Stefano Fais. You can find a recent review of his work at this link. Basically, Fais sees tumor cells as the result of an unbalanced metabolism that leads these cells to develop on their own, even using anoxic processes to grow. He maintains that it is possible to slow down the development of these cells by making their metabolic growth processes more difficult, in particular using proton pumps to make their local environment more basic. 

I am not expert enough to be able to give an informed judgement on these ideas. But, as you may imagine, it led me to consider if there were a link between cancer and the concept of holobionts and, yes, there is a line of research in this area. Several researchers seem to be exploring the idea that cancer is the result of a "dysbiosis," that is an unbalance of the host's microbiota. For instance, in a 2014 work by Apidianakis, we can read:

".... the host genetic background and that of the microbiome, define the intestinal hologenome, which is influenced by age and the environment toward homeostasis or disease. Thus, the intestinal disease may ensue when the intestinal hologenome is imbalanced, that is, when a genetically predisposed or old host interacts with its dysbiotic microbiota in an inadequate or harmful dietary or lifestyle-shaped environment."

The problem, here, is that there is no link whatsoever with Fais's idea that tumors are related to acidity. Maybe there is a link, somewhere, but the story is horribly complicated and I leave it here. It is just a note that you may find interesting and perhaps worth studying in depth.