Friday, March 4, 2016

Posted for Tiff Yue Liu



Achievements and Controversy

            It is hard to believe that this interesting science fiction Blood Music written in the 1980s. Even now I don’t feel that it is too old. More precisely speaking, although science fiction of gene technology has been mentioned a lot, Blood Music is still a good read.
            The short version of the novel is better. Brand new evolution means that most basic of sacrifice including humans, animals, and even the entire external environment. Evolutionary itself is selfish, without compassion or morality. Which is great. The second part of the story is mostly pure spectacle description (although is still quite brilliant). Human characters only as a spectator free from the event, seems like little odds compare to the first part of the story. I can hardly get the point of the role of the women, which is more difficult to understand than Cixin Liu’s The Three-Body Problem (translate by Ken Liu).
            Blood Music raises some interesting hypothesis and questions. What if everyone in a company or country developing by what they think the most efficient way, is it really good for collective? Or it will destroy everything? This novel also reminds me of a movie that I was very impressed ——Gattaca. In the future, the power of technology is stronger than anything else. Genes determine the fate almost become the rule. Vincent has a dream of become a astronaut. But he is one of the last “nature babies” who with defective genes. Until he met Jude Law (Jerome), which is a genetically-enhanced man. They decided to exchange identity. These could be happened in a not too distance future. Today, we are doing several genome editing things, not only on plants and animals, but also on human.
            For example, RPE65 is a genetic eye disease. The patient will be blind with time. After gene therapy, the retina get recovery. This is a mature gene therapy and only allows on adults. But, since this disease is genetic, can we editing human embryonic gene before the baby was born?Last year, biology magazine Protein and Cell published a paper by Chinese associate professor Jun Huang in Zhongshan University, China. They used a tool called CRISPR/cas9 successfully modified multiple human zygotes’ gene. It was the first paper of human embryonic genome editing that was published1. This also rekindled a major controversy of life science ——Whether human beings should modify its genes.
            Actually about two years ago, Kunming Institute of ZoologyChinause CRISPR/cas9 system made two genetically-enhanced macaques. Which proved the CRISPR/cas9 in primates on the feasibility2. Since then, editing human genes is just a matter of time.
            An opinion think that the genome editing technology can be used to help patients with genetic disease, so that they and their descendants are exempted from the nightmare of family disease. In fact, since the CRISPR/cas9 technology came out, it already has a series of animal experiments showing that, for both embryonic and adult, it can achieve the efficacy that tradition treatment even can not compare with. If it can approach used on human, the number of benefices will be countless. The opposite opinion said that if  the modified genes can be genetic, may cause unintended consequence in the future. Jun Huang’s team also considered ethical issues. They deliberately chose some deformity fertilized eggs. But even so, this experiment was caused controversy.
            Present, some European countries are prohibit human genome editing by law. In United States, such kind of experiments can only studying under strict control and use non federal funding. Some scientists worry that, because the quality control for the embryonic genome modification is difficult, do the genetically-enhanced people can not determine the actual effect. Many harmful effects maybe found after birth, even after many years of the baby birth, it will slowly unfold.
            However, genome editing is such an exciting technology tool. It is bringing those science fiction predictions to the real world one by one. Once a precedent, this is  a road that can not be back. I’m really looking forward to see the world become like Gattaca or Blood Music.
            My favorite is the last sentence in Blood Music: “They had found universes in grains of sand.”
“To see a world in a grain of sand
And a heaven in a wild flower,
Hold infinity in the palm of your hand
And eternity in an hour.
 ——William Blake


2  Niu, Y., Shen, B., Cui, Y., Chen, Y., Wang, J., Wang, L., ... & Sha, J. (2014). Generation of gene-modified cynomolgus monkey via Cas9/RNA-mediated gene targeting in one-cell embryos. Cell, 156(4), 836-843.

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