Posted on

Release date: 2018-06-04

According to a recent report by the US Daily Science website, British scientists use donor stem cells, alginate and collagen as raw materials to create a special "bio-ink" and print the human cornea for the first time using 3D printing technology. This means that in the future, humans will have an infinite supply of corneas. Of course, it may take time for the cornea to be used for transplantation.

The team led by Che Kangen, a professor of tissue engineering at Newcastle University, reported in the recently published Journal of Experimental Eye Research that they donated corneal stem cells (corn corneal stromal cells) and alginates, which are donated by healthy people. Collagen is mixed to create a "bio-ink" that can be used for 3D printing. Then a cheap 3D printer is used to successfully squeeze the bio-ink into concentric circles, which ultimately form the shape of the human cornea. The entire printing process is less than 10 minute. Moreover, studies have shown that stem cells can continue to develop.

Car Conn said: "Many teams around the world are working hard to develop the ideal bio-ink, hope to make this process feasible. Our 'secret weapon' is a gel of a mixture of alginate and collagen, which can keep stem cells Vitality while producing materials that are stiff enough to retain their shape and soft enough to be squeezed out of the nozzle of a 3D printer."

The researchers also showed that they can get data by scanning the patient's eye and quickly print out the cornea of ​​the right size and shape.

Of course, Che Kangen also pointed out: "This 3D printed cornea still needs further testing. It may take several years for the actual transplant. But we have proved that using the material obtained from the human eye to print the cornea It is completely feasible, and this method is expected to solve the problem of corneal shortage in the global eye."

As the outermost layer of the human eye, the main role of the cornea is to focus on the line of sight - if the eye is like a camera, the cornea is the lens of the camera. At present, there are extremely shortages of corneas for transplantation. About 10 million people worldwide need surgery to prevent corneal blindness caused by diseases such as trachoma. In addition, corneal dysfunction caused by burns, accidents or diseases causes about 5 million people to complete. blindness.

Source: Technology Daily

Health Ingredients

Health foods contain a certain amount of functional health ingredients, which can regulate the functions of the human body, have specific effects, and are suitable for specific groups of people. General food does not have specific functions, and there is no specific range of people to eat. Health food cannot be directly used to treat diseases. It is a human body mechanism regulator and nutritional supplement.


The human body needs many nutrients, such as water, protein, fat, carbohydrates, vitamins, minerals, dietary fiber,etc. Nutritional products are generally rich in these nutrients and suitable for everyone. Its nutritional value of health ingredients is very high and it is suitable for everyone to drink. While health food is food with specific health functions and only suitable for specific groups of people, and its nutritional value is not necessarily high. Therefore, the various nutrients that the human body needs are still obtained from three meals a day. Of course, health care products are better in some aspects. Health care products can obtain more fixed health functions than nutrition products. The minerals of the human body are not balanced, so health care products have a greater advantage in some aspects.

DHA, NMN, MCT, CLA, Melatonin, Creatine

Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualyn-bios.com