THE PROMINENT SCIENTIST REPORTS ON HIS WORK, AND BEYOND
J. Craig Venter wrote in the first chapter of this 2013 book, “On July 12, 2012, almost seven decades after Schrödinger’s original [‘What is Life?’] lectures, I found myself in Dublin, at the invitation of Trinity College… I knew my own [lecture] would be recorded, live-streamed, blogged, and tweeted about as I once again tackled the question that my predecessor had done so much to answer… I explained how life ultimately consists of DNA-driven biological machines. All living cells run on DNA software, which directs hundreds to thousands of protein robots. We have been digitizing life for decades, since we first figured out how to read the software of life for decades… Now we can go in the opposite direction by starting with computerized digital code, designing a new form of life, chemically synthesizing its DNA, and then booting it up to produce the actual organism. And because the information is now digital we can send it anywhere at the speed of light and re-create the DNA and life at the other end… [This book] is intended to describe the incredible progress that we have made…we have advanced … to an understanding of the genetic code to the proof, through construction of a synthetic chromosome and hence a synthetic cell, that DNA is the software of life… My aim is not to offer a comprehensive history of synthetic biology but to shed a little light on the power of that extraordinarily cooperative venture we call science.” (Pg. 6-7)
He began the book with the statement, “‘What is life?’… What precisely is it that separates the animate from the inanimate? What are the basic ingredients of life? Where did life first stir? How did the first organisms evolve? Is there life everywhere? To what extent is life scattered across the cosmos? If other kinds of creatures do exist on exoplanets, are they as intelligent as we are, or even more so? Today these questions … remain the biggest and most hotly debated in all of biology… though we are still groping for all the answers, we have made huge progress… toward addressing them… We have now entered what call ‘the digital age of biology,’ in which the once distinct domains of computer codes and those that program life are beginning to merge…” (Pg. 1)
He observes, “In our own time a new kind of vitalism has emerged. In this more refined form the emphasis s … on how current reductionist, materialist explanations seem inadequate to explain the mystery of life… vitalism today manifests itself in the guise of shifting emphasis away from DNA to an ‘emergent’ property of the cell that is somehow greater than the sum of its molecular parts and how they work in a particular environment. This subtle new vitalism results in a tendency … to downgrade or even ignore the central importance of DNA.” (Pg. 17)
He recounts, “When we announced our creation of the first synthetic cell, some had asked whether we were ‘playing God.’ In the restricted sense that we had shown with this experiment how God was unnecessary for the creation of new life, I suppose that we were. I believed that with the creation of synthetic life from chemicals, we had finally put to rest any remaining notions of vitalism once and for all. But it seems that I had underestimated the extent to which a belief in vitalism still pervades modern scientific thinking. Belief is the enemy of scientific advancement.” (Pg. 24)
He asserts, “This is now the age of digital biology… All the information needed to make a living, self-replicating cell is locked up within [DNA]… As we read and interpret that code, we should, in the fullness of time, be able to completely understand how cells work, then change and improve them by writing new cellular software. But, of course, that is much easier to say than to do in practice…” (Pg. 47)
He states, “we recognized that if we were successful in the ability to design the code of life in the computer, translate it into DNA software by chemical synthesis, and pu7t that synthetic code to work to create a new organism, this meant that vitalism was truly dead and… that we would have a clearer picture of what the word ‘life’ really meant.” (Pg. 78)
Of the results of a University of Pennsylvania bioethics published in ‘Science’ in 1999, he comments, “Perhaps the most pressing question … was ‘whether such research constitutes an unwarranted intrusion into matters best left to nature.’ An important conclusion of the study [was]… ‘the dominant [religious] view is that while there are reasons for concern, there is nothing… that is automatically prohibited by legitimate religious considerations.’ … The authors added that a ‘good steward’ would mov genomic research forward with caution… as long as they continue to engage in public discussions which we do.” (Pg. 82)
After announcement and publication about their successful 2010 experiment, “it was clear that some found it hard to accept the concept of life as an information system…The most significant criticisms focused on true significance of creating a cell controlled by DNA software. Did it count as synthetic life? Some pointed out correctly that our synthetic genome was closely based on an existing genome and thus did not count as being truly synthetic, having a natural ancestor in the form of M. mycoides… there were also those biologists who were absolutely certain that we had not created synthetic life at all because we had used an … already-living cell… This diverse range of views tells us … There is still no agreed-upon definition of what we actually mean by … ‘life,’ let alone ‘synthetic life,’ ‘artificial life,’ or ‘life from scratch.’ … We now know that the right DNA code… placed in the right chemical context, can produce new life out of existing life… there was no direct ancestor of the cell we had created to be found in nature. With our synthetic code we had added a new tributary to the river of life.” (Pg. 127-129)
He argues, “Even when we achieve life from a cell-free system, it still cannot be considered ‘life from scratch,’ whatever that might mean. I doubt if any of the individuals who have used this phrase have thought much about what they are actually trying to express from it. Let’s use baking a cake ‘from scratch’ to illustrate what I mean… I doubt that anyone would mean formulating his own baking powder by combining sodium, hydrogen, carbon, and oxygen to produce sodium bicarbonate…” (Pg. 131) Later, he adds, “The eventual creation of cells from scratch will open up extraordinary new possibilities… The ability to create life without pre-existing cells will also have very practical implications, since we will be able to increase the degree of freedom in the design of new forms of life.” (Pg. 136)
He acknowledges, “There are also ‘biohackers’ who want to experiment freely with the software of life… Many have focused on the risks of this technology’s falling into the ‘wrong hands.’ … However, it is not easy to synthesize a virus, let alone one that is virulent or infective, or to create it in a form that can be used in a practical way as a weapon… For me, a concern inf ‘bioerror’: the fallout that could occur as the result of DNA manipulation by a non-scientifically trained biohacker or ‘biopunk’…” (Pg. 155)
He admits “my assumption that life does indeed exist elsewhere in the universe; There are still many people (often religious) who believe that life on Earth is somehow special, or unique, and that we are alone in the cosmos. I am not among them.” (Pg. 180) He predicts, “The day is not far off when we will be able to send a robotically controlled genome-sequencing unit in a probe to other planets to read the DNA sequence of any alien microbe life that may be there… The ability to send DNA software in the form of light will have any number of intriguing ramifications…It is hard to imagine where [biology] will take us in the next seventy years, but whatever this new era of biology is heading, I know that the voyage will be as empowering as it is extraordinary.” (Pg. 186-187)
This book will be ‘must reading’ for those studying ‘origin-of-life’ research, and related topic.