Stephen William Hawking and stem cells
On March 14, Stephen William Hawking, the genius who we thought had already surpassed the bondage of time, finally left the planet and returned to the vast sea of stars.
As we know, Hawking is not only famous for his revolutionary exploration of the universe, but he has also made great contributions in education, popular science and other fields, especially thinking about the future fate of mankind, which has a profound impact on every member of the global village.
In 2014, Hawking and Discovery team co-produced a documentary about prospects for stem cell, referring to:
“We raise our heads to heaven and ponder the position of mankind in the universe; stem cell scientists explore human body and think about how to move the entire human species forward… We are a brave new world before us. I believe we can make good use of this knowledge and benefit all Humanity.”
– This concern for the destiny of mankind, the enthusiasm and confidence that we have in the science of cell science are inspiring us, which make our lives are moving forward.
Let’s take a look at the story he tells:
– Understanding the world of stem cells with Hawking –
“I spent whole my life exploring the mysteries of the universe, but I also curious about another universe. This universe is hidden in our bodies—the human’s own cellular galaxy. The new era of the medical community is close at hand. In the new era, any diseases of the human body can be cured. Thanks to those cells in our body that have power, they are called stem cells.
My life is different from ordinary people. Since I was in my twenties, I was no to deal with the many temptations faced by the healthy limbs and just live by my wisdom. Stem cells may help you get the same freedom, allowing you to pursue your dreams and never worry about physical limitations.
Recognition of stem cells
“All of us came from this way. At first it was just a fertilized egg floating in the womb. Let’s imagine that I float in the fallopian tube. At first there is only one me, then (split into) two me, then two to four, Four changes and eight… Split all the way, and finally when I flow downstream, there are about 100 pieces cell aggregation.
These embryonic stem cells are blank cells that have not yet formed a specific tissue, but will soon be categorized into skeletal, muscle, and neuronal cells. After nine months, they will form a complete human.
However, after we were born, these blank embryonic stem cells were lost. We lost their unique ability to regenerate body tissues.
“I thought that once the cells had been differentiated, they couldn’t be reversed. A breakthrough experiment in 1962 overturned this view. In the experiment, scientists took out an adult intestinal tissue cell in a frog and placed it in a blank egg. The blank egg was acted as a time machine to turn DNA back in time, so that it could return the status of the entire tadpole development and eventually cultivated the entire frog.
Biologists believe that there are key proteins in the egg, which can eliminate the arrangement of DNA in the adult cells, allow the cells to return to their original state, return to blank embryonic cells and wait for differentiation instructions.
Studies have shown that we can produce embryonic stem cells, which are immortal and immortal. We now have the ability to do all sorts of wonderful things. What the various scientific communities could not do before, stem cells are expected to set off a medical revolution in a few decades.
“It should be noted that the extraction of stem cells from human embryos has been controversial, and now rely on other ways to borrow the power of stem r, such as the use of induced pluripotent stem cells (iPS, a high risk of cancer, temporarily not good for implanting into the human body) to produce a regenerated heart.
Scientists are trying to transform heart transplant technology by planting donated stem cells in a donated empty pack heart and then letting it regain its life.
After a few years, it would be a fact that tailoring the replacement organ with the patient’s own stem cells would be the way to go. We do not have to suffer many of the side effects of traditional treatment, such as curing one disease but returning another, or taking anti-rejection drugs for life after receiving transplants.
“Our body rebuilds itself every day. We make millions of new skin cells. Our muscle fiber tissue naturally regenerates. We gradually recognize these natural repair mechanisms and begin to manipulate them. However, many human parts do not seem to have the ability to repair. The nerves in my spinal cord have slowly degenerated since I was in my twenties, and no one has yet had a way to regenerate them.
Through the untiring efforts of scientists, we have been able to survive all the transplanted stem cells and refill the damaged area for severe spinal cord injury. In vivo experiment, mice with limb spasms have been able to pick up food and run after stem cell treatment.
These results confirm that the spinal cord, the biological fortress, can still be defeated, and stem cells can regenerate tissue in any part of the body.
“We look up at the sky and think about the status of mankind in the universe; stem cell scientists are exploring the human body and thinking about how to move the entire human species forward. In the next decade, we will certainly develop new therapies to help humans to prolong their lives. But I have to accept that oneself was born too early, most of them have no chance to witness this golden age of stem cells, so I have a few reminders for people who are destined to enter this era:
The physicists opened the world of atoms nearly a hundred years ago and opened up new knowledge area, which brought extraordinary energy and heavy risks.
Now we are working hard to control stem cell technology and slowly gain insight into the power of nature – she creates, sustains, and destroys life.
We have a brave new world before us. I believe we can make good use of this knowledge to benefit all mankind.
I hope everyone will realize my prediction.
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