Chapter 275: Alien with a life span of more than 5000 years?

phone-reading
During this seventeen-hour space journey, the chief has not rested, and Zhang Wei was naturally embarrassed to rest. Therefore, when the spaceship "Future" returned to Earth, he ignored the reporters who asked him , Go directly to the research building, and fall asleep.
too tired.
When I woke up, it was more than five o'clock in the afternoon. After washing and getting dressed, he habitually activated Dark Blue 1 to see if there were any missed calls.
As soon as Deep Blue 1 started, the intelligent assistant Xiao Lan reminded him that his mother left him a holographic video message.
Zhang Wei immediately asked Xiao Lan to broadcast this holographic video message. It turned out that his mother told him to go home to dinner at night and said that he had something to discuss with him.
"What could it be?"
Zhang Wei couldn't help but be curious, and then took two intelligent robot bodyguards and drove a flying car to the villa where his parents lived.
Dinner is very rich, and the meals are all cooked by my mother. This is also Zhang Wei's favorite taste. Although the robot-made meals are also very good, they always have a little less taste.
"Mom, do you have anything to tell me?"
After dinner, Zhang Wei asked.
"Of course it's your marriage. In less than five months, you and Xiaoyu are about to get married, and you should start preparing."
The mother laughed, she had been expecting her son to get married quickly, and then she had a good hug of her grandchildren, and now she was finally looking forward to it.
"It's more than four months, do you need it so early?"
Zhang Wei surprised.
"Where is this early? It's not too early! Do you think it's as simple as asking a relative or friend to have a meal and a drink together? There are so many things."
The mother broke her finger and said, "You have to decide the date, scale, form, and ceremonial style of the wedding in advance; determine the wedding budget; draft the guest list, determine the best man, bridesmaid, determine the host and witness, determine the wedding venue, wedding banquet hotel, Wedding company; custom dress; distribution of invitations ... "
The mother said it for more than ten minutes, before she finished.
Zhang Wei heard his head so big that it was such a troublesome thing to get married for the first time, but it was a major event in his own life. Not only can't be sloppy, but also beautiful.
At this time, the mother said, "You do n’t have to worry about the details, you can ask a professional to deal with it. You only need to tell them the appeals, but the guest list, the bridesmaid, the hostess, and the witness are all You need to determine it. "
Zhang Wei heard that he was relieved and quickly promised his mother that he would handle the matter as soon as possible.
After returning to his villa, Zhang Wei began to seriously consider his wedding.
At the beginning of the year, he participated in the weddings of Liu Hai, Qin Xiaobu, and Zhang Zhijian. At that time, he decided to make his wedding a wonderful century wedding, and it must be different.
How to be different?
Zhang Wei thought for a long time, and suddenly his eyes lit up. If this wedding is held on the moon, it cannot be said that it is a latecomer, but it is absolutely unprecedented.
Ok, deal.
Zhang Wei's mouth twitched a smile, and now he can only have such a big wedding, because other people can't even get to the moon. In addition, since I decided to hold a wedding on the moon, I definitely cannot let the wedding take place in the open field. It seems necessary to build a building on the moon for my wedding. Winter Palace!
After working for another two days, Zhang Wei finally got the preliminary preparation for the wedding. At this time, he received good news from Dr. Summit, who had a major role in the research of alien blood. Find.
Future technology company, experimental base, in a laboratory.
"Dr. Summit, are you saying that this alien might be a race with a life expectancy of more than five thousand years?"
Zhang Wei, wearing a white coat, looked at Summit before him and asked.
"Doctor, you know, human lifespan is related to the number of cell divisions."
Summit said excitedly.
Zhang Wei nodded, his knowledge reserve is extremely rich, naturally knows this.
This view was put forward by American scholar Halfley in 1961. Based on experimental research, Helvely found that during the growth of animal embryonic cells, the number of divisions is regular, and aging and death occur at a certain stage. This is related to the number and cycle of cell division. Multiplying the two is its natural life span.
The specific experimental situation of Halfley is this: He divides the fetal cells in the culture medium again and again, and reproduces from generation to generation, but when the cells divide to 50 generations, all the cells age and die. On the basis of a large amount of experimental data, he proposed to calculate the lifespan of a person based on the number of cell divisions. The average cycle of a human cell division is about 24 years. The number of chicken cell divisions is 25, the average cycle of each division is one year and two months, and its life span is 30 years. The number of mouse cell divisions is 12, the division period is 3 months, and the life span is 3 years.
Summit said excitedly, "After testing and analyzing the alien cells you provided, I found that the alien cells are very similar to human cells, with almost the same structure, and the division cycle is similar to human cells. In the subsequent experiments In the middle, I used hormones to stimulate alien cells to accelerate division, and finally got a surprising discovery. When alien cells divide to the 2100th generation, they will age and die, which means more than 5000 years of life. "
"It can be divided into 2100 generations. It should be related to telomeres and telomerase. Dr. Summit, have you tested the telomeres and telomerase of alien cells?"
Zhang Wei asked.
Telomere is a hat-shaped thing that exists in the nucleus of human and some animals. It is actually a DNA fragment. Scientists have found through research that each time a cell divides, the telomere shortens a bit. When the length of the telomere is shortened to a certain extent, the cell will stop dividing, resulting in aging and death. In other words, the number of cell divisions is limited by telomeres. Therefore, some scientists believe that the length of telomeres determines the lifespan of organisms ~ EbookFREE.me ~ The longer the telomeres, the longer the lifespan.
In the course of research, scientists also found that there is a special reverse transcriptase in the cell-telomerase. The presence of telomerase can repair the defects of DNA replication, so that telomeres will not be lost due to cell division, so that the number of cell divisions increases. Therefore, the more active telomerase in the cell, the longer the length of telomere can be maintained.
According to these research results, some scientists believe that if telomerase can be kept high, the length of telomere can be maintained, and the process of cell aging will be delayed, even allowing humans to live forever.
The oncologist Ronald Debinho of Harvard University in the United States successfully reversed the aging process for the first time through a mouse test based on telomere theory. In the experiment, Debinhoe made the mice prematurely aging through special methods, so that the skin, brain, internal organs and other organs of these animals were similar to those of the 80-year-old man; then using drug stimulation to successfully restore telomerase reverse transcriptase to life. After taking the medicine for 2 months, the mice grew a lot of new cells, rejuvenated and rejuvenated. What is even more surprising is that the old male rats have regained their fertility again and reproduced their offspring again.
However, there is no free lunch. Delaying aging in this way may also increase the risk of cancer. Studies have shown that increasing the activity of telomerase in mice will make them more susceptible to skin cancer and breast cancer.
According to Zhang Wei, there are also international pharmaceutical giants who have studied the anti-aging agent based on the telomere theory, but the experimental results are disappointing: "The experimental body has grown many deformed organs." Ultimately, this project can only be cut off, the experiment The information was also sealed and not disclosed to the outside world.
This is why Zhang Wei had not considered the theory of telomere when he studied the evolutionary fluid of genes. book
(Sikushu)