Filed under: Brave New World, Connections, General Musings, Genetic Testing, Health, NPR, Science, tech, Wired | Tags: Allen Institute for Brain Science, blogging, BRAIN Initiative, health, jim downey, Katie M. Palmer, NPR, Rob Stein, science, technology, Wired
Two brief news items in the last day or so illustrate just *how much* fundamental knowledge we don’t have about our own biology.
The first is this good article from Wired about building a comprehensive model of the human brain: A First Big Step Toward Mapping the Human Brain
The Allen Cell Types Database, on its surface, doesn’t look like much. The first release includes information on just 240 neurons out of hundreds of thousands in the mouse visual cortex, with a focus on the electrophysiology of those individual cells: the electrical pulses that tell a neuron to fire, initiating a pattern of neural activation that results in perception and action. But understanding those single cells well enough to put them into larger categories will be crucial to understanding the brain as a whole—much like the periodic table was necessary to establish basic chemical principles.
Consider that: we’re just now really building a good map of how the different neurons interact within one small component of the brain. And not even the human brain, at that.
And this news story, which came as a shock to me when I heard it on NPR: Seasons May Tweak Genes That Trigger Some Chronic Diseases
From the story:
The seasons appear to influence when certain genes are active, with those associated with inflammation being more active in the winter, according to new research released Tuesday.
* * *
Other researchers say the findings could have far-reaching implications.
“The fact that they find so many genes that go up and down over the seasons is very interesting because we just didn’t know that our bodies go through this type of seasonal change before,” says Akhilesh Reddy, who studies circadian rhythms at the University of Cambridge but was not involved in the new research. “And if you look at the actual genetic evidence for the first time, it’s pretty profound really.”
Again, this is a really basic bit of science — akin to understanding how the sequence of gene expression leads to the development of an organism. Learning that your genetic activity changes during the year means that illnesses are much more dynamic than anyone realized previously.
Not to get too Rumsfeldian, but it really is important to know what we don’t know, as seen between the two items above. In the first case, researchers set out to build a model because they knew that they needed the basic knowledge. In the other, it was investigation of a mystery which led to an unexpected discovery.
And in both cases, it’s science at work. And very cool.
Filed under: Brave New World, Connections, Genetic Testing, Predictions, Science, Science Fiction, Superman, tech, Writing stuff | Tags: blogging, Chinese, Chu Ling, Communion of Dreams, ExtremeTech, genetic modification, genetics, health, jim downey, John Hewitt, predictions, science, Science Fiction, technology, writing
From Chapter 5 of Communion of Dreams, after the revelation that the Chinese orphan Chu Ling is a clone:
Jon looked around. He decided to tell them the rest of the bad news. “And that’s not all. There’s evidence that the original host had been genetically manipulated to radically change several characteristics related to intelligence.”
Bailey looked a little confused. “What’s that mean?”
Gish sighed. “It means that someone has created a better human, and now is producing copies.”
“Well, better in their eyes, anyway,” said Gates. Her voice contained a touch of bitterness.
Gee, here’s a bit of news:
And so it has come to pass: Chinese scientists at the University in Guangzhou have created the first genetically modified human embryos. Although there had been rumors circulating for some time that it had already been done, until now, there has been no official scientific report.
Another prediction come true.
Filed under: Alzheimer's, Amazon, Artificial Intelligence, Brave New World, Connections, Feedback, Genetic Testing, Health, Hospice, Humor, Kindle, Marketing, movies, Promotion, Publishing, Science, Science Fiction, tech, Writing stuff, YouTube | Tags: Aliens, Alzheimer's, Amazon, artificial intelligence, blogging, direct publishing, DNA, feedback, free, health, Her Final Year, hospice, humor, jim downey, John Bourke, Kindle, movies, promotion, science, Science Fiction, Scrivener, St. Cybi's Well, synthetic biology, technology, writing, www youtube
Catch this news this week?
Synthetic biology: New letters for life’s alphabet
The five bases found in nucleic acids define the ‘alphabet’ used to encode life on Earth. The construction of an organism that stably propagates an unnatural DNA base pair redefines this fundamental feature of life.
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Sorry about the sparseness of posting lately. I’ve been … busy. Have had a couple of interesting things happen which could play out in some very good ways. One is still enough in an embryonic stage that I won’t mention anything about it yet, but the other is far enough along that I’ll share: there’s a literary agent who is potentially interested in representing me, something which I have been thinking about for a while.
And it seems like a good enough fit that I took all of last weekend to put together a submission package for formal consideration. That meant going through and doing fairly thorough revisions to the first few chapters of St Cybi’s Well, using the feedback I have gotten from half a dozen ‘beta readers’, as well as composing a formal synopsis of the book. Frankly, both were a lot of work, and somewhat skewed my normal work schedule such that it is just now getting back to what passes for normal in my life.
But it was also helpful, and forced me to clarify some things which I had left unfocused for the rest of the book. Because of the way I am writing this (using Scrivener), it has been fairly easy for me to block out both the overall arc of the book as well as character developments. But doing so has been based on chapter notes more than anything, meaning that it was still somewhat in flux. Creating a full synopsis meant that I had to put the whole thing into one coherent document. And even though it was something of a pain in the butt, the result is helpful.
I’ll keep you posted as to any concrete developments.
* * *
Remember this scene from Aliens?
Considered a classic, and rightly so. But I’ve always thought that a big part of the brilliance of it is how it sets up what happens immediately after:
Back at the groups’ table, Bishop holds up his hand and examines a tiny cut closely.
BURKE: I thought you never missed, Bishop?
To Ripley’s horror, a trickle of white synthetic blood runs down his finger. Ripley spins on Burke, her tone accusing.
RIPLEY: You never said anything about an android being on board! Why not?!
BURKE: It never occurred to me. It’s common practice. We always have a synthetic on board.
BISHOP: I prefer the term ‘artificial person’ myself.
* * *
Oh, one more thing: in observation of Mother’s Day, the Kindle edition of Her Final Year is available for free download through Sunday, May 11th. If you’re new here, just a quick note: this is our care-giving memoir about the challenges and rewards of caring for someone with dementia, as well as the long recovery/reflection period which comes after. It seems to have helped a lot of people. Perhaps it can help you or someone you know.
Filed under: Genetic Testing, Health, Machado-Joseph | Tags: blogging, health, jim downey, predictions, Science Fiction, technology
While I’m on a bit of vacation, I have decided to re-post some items from the first year of this blog (2007). This item first ran on March 18, 2007
It is a very difficult decision to be tested for a genetic disease which you may have, and for which there is no known treatment (let alone a cure). If you test positive, you know exactly the sort of future you face. And, if you test positive, it can have a significant impact on your employment and insurance possibilities, even decades before you might experience any onset of symptoms.
There is a similar disease which runs in my family called Machado-Joseph. In terms of statistics, there is about a 68% chance that I carry the gene for it, though I do not have the other familial characteristics which seem to track with the disease. So I have elected not to be tested. Besides, at nearly 50 years of age, if I did have the onset of the disease, it would be likely that it would progress so slowly that I would die of something else (the younger the age of onset, the more rapidly the disease progresses).
Anyway, I recommend you read the article. Because as the science of genetic testing develops, it is likely that at some point you will have to make a decision about whether or not you are tested for either a genetic disease or a predisposition towards some type of health problem. Better to consider the matter before being confronted with it. Trust me on this.
What does this have to do with Communion? [warning – spoilers ahead]
The book’s history is premised on a flu pandemic about 40 years prior to the story. This pandemic not only killed hundreds of millions outright (and threw the world economy into complete chaos, resulting in hundreds of millions more deaths) , it left most of the survivors sterile – and did the same to most of the resulting children born. This is a recipe for extinction.
I chose this scenario for several reasons, not the least of which is that I think we are due for a world-wide pandemic sometime in the next decade. But also my family history and personal choice came into play – long before there was a genetic test to determine whether or not I carried the MJD gene, I made the decision to be childless. I felt at the time that the risks of passing on the disease were just too great. Not having any progeny leaves one with a sense of loss, even if it was a decision made for the best of reasons. I could only surmise that the effects of imposed childlessness population-wide would be even more profound.
And, [again, spoiler alert!] the psychological impact of the transformation which comes at the end of the book, through the agency of the alien artifact, would be a very literal rebirth for the entire human race. Not only do we give birth to a subsequent species in the form of the AI/Expert Seth (who achieves true sentience, midwifed by the artifact), but the entirety of the effects of the pandemic are cleansed – meaning that humankind has a second chance, and can start afresh. The hope is, of course, that we will do better the second time around.
So, go read the article.
Filed under: Alzheimer's, BoingBoing, Connections, Failure, General Musings, Genetic Testing, Health, Hospice, Marketing, Music, Promotion, Publishing, Science, Science Fiction, Society, Survival, tech, Violence, Writing stuff, YouTube | Tags: Alzheimer's, Amazon, blogging, BoingBoing, care-giving, direct publishing, free, genetics, health, hospice, jim downey, John Bourke, Kindle, literature, memoir, music, predictions, Queen, science, Science Fiction, technology, writing, www youtube
From BoingBoing here’s an embedded video of a long (90 minutes) but *really* fascinating discussion on the topic of why homo sapiens is the sole surviving member of our genus, and what that might tell us about ourselves. What I very much enjoyed was the way the different disciplines brought their own perspective to the question, and how each different perspective tends to reinforce the science of the others.
Today, we’re the only living member of the genus Homo and the only living member of the subtribe Hominina. Along with chimpanzees and bonobos, we’re all that remains of the tribe Hominini.
But the fossil record tells us that wasn’t always the case. There were, for instance, at least eight other species of Homo running around this planet at one time. So what happened to them? What makes us so special that we’re still here?
* * * * * * *
From Chapter 5:
Navarr turned and looked at Jon. “Any indication from the medical report what the genetic changes mean functionally?”
“No, not yet. The way that the genetic manipulation will play out is very difficult to predict, since that is a subtle and complex dance over time. They have simulations running now, and we may have an idea in a few days.”
* * * * * * *
I don’t want to give away too much, but there are other intimations in Communion of Dreams on this topic, since it is one which has long intrigued me. And while I am nowhere near knowledgeable enough to get too far into the molecular genetics, the current state of the science is such that there is room for plausible speculation.
And again, without giving too much away, I can say that this is something which will be one of the themes in St. Cybi’s Well.
* * * * * * *
Speaking of giving things away: next Saturday, June 9th, will be a Kindle promotional day for both Communion of Dreams and Her Final Year. As previously, the Kindle edition of each book will be available for free download all day, and you don’t even need to own a Kindle to get & read your free copy, as there is a free emulator app for just about every computer/tablet/mobile device out there.
In addition, I will be offering a signed paperback copy of each book as a prize — details to be announced in a couple of days!
Filed under: Genetic Testing, Pandemic, Pharyngula, Predictions, PZ Myers, Science, Science Fiction, tech, Violence
Last week I mentioned the genetic breakthrough accomplished by J Craig Venter and his team: the creation of functional man-made DNA. Since then, lots of very smart people have been trying to sort through the implications of this development. One of the better collections of such discussion I have seen can be found at Edge.
Nature’s constant attempts to kill us are often neglected in these kinds of discussions as a kind of omnipresent background noise. Technology sometimes seems more dangerous because it moves fast and creates novelty at an amazing pace, but again, Venter’s technology isn’t the big worry. It’s much easier and much cheaper to take an existing, ecologically successful bug and splice in a few new genes than to create a whole new creature from scratch…and unlike the de novo synthesis of life, that’s a technology that’s almost within the reach of garage-bound bio-hackers, and is definitely within the capacity of many foreign and domestic institutions. Frankenstein bacteria are harmless compared to the possibilities of hijacking E. coli or a flu virus to nefarious ends.
Let me repeat that last sentence: Frankenstein bacteria are harmless compared to the possibilities of hijacking E. coli or a flu virus to nefarious ends.
It’s almost like he’s read Communion of Dreams, eh?
Filed under: Connections, General Musings, Genetic Testing, Health, Predictions, Reproduction, Science, Science Fiction, Synesthesia
The implication is that there is a great deal more flexibility – or ‘plasticity’ – in the structure of the brain than had been previously understood.
Well, yeah. Just consider how someone who has been blind since birth will have heightened awareness of other senses. Some have argued that this is simply a matter of such a person learning to make the greatest use of the senses they have. But others have suspected that they actually learn to use those structures in the brain normally associated with visual processing to boost the ability to process other sensory data. And that’s what the above research shows.
OK, two things. One, this is why I have speculated in Communion of Dreams that synesthesia is more than just the confusion of sensory input – it is using our existing senses to construct not a simple linear view of the world, but a matrix in three dimensions (with the five senses on each axis of such a ‘cube’ structure). In other words, synesthesia is more akin to a meta-cognitive function. That is why (as I mentioned a few days ago) the use of accelerator drugs in the novel allows users to take a step-up in cognition and creativity, though at the cost of burning up the brain’s available store of neurotransmitters.
And now there is more evidence that synesthesia is a more complex matter than researchers had previously understood:
Now, Asher and colleagues in the United Kingdom have done what they say is the first genetic analysis of synesthesia. Their findings are published this week in the American Journal of Human Genetics.
Researchers collected DNA from 196 people from 43 families in which there were multiple members with synesthesia. They looked exclusively at auditory-visual synesthesia, the kind where sound triggers color, which is easier to diagnose than other possible forms.
They expected to find a single gene responsible for synesthesia, but they found that the condition was linked to regions on chromosomes 2, 5, 6, and 12 — four distinct areas instead of one.
“It means that the genetics of synesthesia are much more complex than we thought,” Asher said.
No surprise there. The article goes on to discuss what may be happening physiologically – researchers are still trying to construct a model of how synesthesia actually happens in the brain, and still tend to see it as something which “goes wrong” developmentally. The supposition, according to the CNN article, is that there is a failure of a necessary “pruning” of cross-wiring in the young brain.
But what if it is instead a meta-cognitive function, something which is emerging as part of ongoing evolution of the human brain? In other words, an enhancement of our current ability to think and remember, by allowing our brains a bit more complexity in the neural connections?