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Artificial skin for diabetes treatment

08.08.2017

Skin grafts made using CRISPR gene-editing technology prevent mice from developing diabetes, and scientists say these properties of artificial skin could also be useful in humans.

In a proof-of-concept study, scientists at the University of Chicago edited neonatal mouse stem cells to control the production of glucagon-like peptide 1 (GLP-1). This hormone stimulates the synthesis of insulin by the pancreas while maintaining the required level of glucose in the blood. The genetically modified skin grafts were then transplanted into mice fed a high-fat diet to induce obesity. These mice reversed insulin resistance and were half the weight of mice without skin grafts.

Obesity is one of the major risk factors that can cause type 2 diabetes with high insulin resistance. According to the head of the study, artificial human skin made from stem cells could be used to treat people with the disease.

Artificial skin has been used to treat burn patients for decades. But as technology has advanced to the point where it is now possible to grow skin in the lab, researchers have turned to finding ways to use it to treat other diseases. The researchers say they now have the ability to explore the use of various modified gene transplants to treat various diseases.

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Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

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Mini air conditioner Sony Reon Pocket 5 09.05.2024

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Energy from space for Starship 08.05.2024

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New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

Centenarians differ in intestinal microbes 06.08.2021

Researchers at Keio University have found that those who are lucky enough to overcome the century-old milestone, the intestinal microflora is markedly different from the microflora of those who are younger. The study involved 160 people, whose average age was 107 years. (centenarians are not always real, sometimes they get extra years due to confusion in papers or due to outright deceit; but, hopefully, in this case, the authors of the work took into account all these pitfalls.) Intestinal bacteria of centennial people were compared with bacteria of those , who were between 85 and 89 years old, as well as with the bacteria of those who were between 21 and 55 years old.

Some groups of microbes were more abundant in centenarians than in people from the other two age groups; and some microbes, on the contrary, were noticeably smaller. All bacteria secrete some substances formed in the course of bacterial metabolism; accordingly, in the microflora of centenarians, the metabolic pattern should have been somehow different. The researchers noticed that among the bacterial substances that were secreted by the microflora of centenarians, there were especially many so-called secondary bile acids. We know that bile acids are synthesized in the liver, stored in the gallbladder, and then transported to the intestines, where they help absorb various fats and fat-soluble vitamins.

But when bile acids enter the intestines, they are chemically modified here by local bacteria - this is how secondary bile acids are obtained. Those who crossed the XNUMX-year mark were especially rich in a secondary bile acid called isoallithocholic acid, which is produced by bacteria from the genus Odoribacteraceae. Secondary bile acids perform some of the same tasks as the primary ones. But not only: isoallolithocholic acid, for example, was found to have antimicrobial properties. It inhibited the growth of potentially pathogenic bacteria such as Clostridium difficile, which causes diarrhea and intestinal inflammation. Also, this acid acted against some bacteria that became resistant to the antibiotic vancomycin.

It can be assumed that centenarians became centenarians because their microflora keeps the intestines healthy by protecting it from unwanted microbes. A lot depends on the state of the gastrointestinal tract - a long healthy life largely depends on it. But it is unlikely that the whole secret of longevity is attributed only to the correct microflora. In addition, the authors of the work themselves indicate that they do not know why centenarians had such a composition of intestinal bacteria - either due to some kind of diet, or due to the characteristics of immunity.

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