May 25, 2017

3D Bioprinter Produces Skin for Tranplants

3D Bioprinter Prints Functional Human Skin Adequate for Transplant

3dprintedskin-frankmagliochetti-healthcareinnovationA team of researchers in Spain reports the development of a new three-dimensional (3D) printer capable of printing human skin suitable for transplant into patients. The printed skin is also suitable for testing drugs and cosmetics.

The team included several groups of researchers, including a group from the Universidad Carlos III de Madrid (UC3M) in Spain. The researchers describe their breakthrough in the scientific journal, Biofabrication.

3D Printing and Skin Production

3D printing has been around since the 1980s, when Charles (Chuck) Hull introduced the first stereolithography apparatus (SLA), but the 3D printing industry is now experience rapid growth with applications in many fields. In medicine, 3D printing holds great promise in someday giving clinicians the ability to produce personalized, complex human tissues and organs on demand. One woman has already received a 3D printed ear from one company, for example, while another frankmagliochettireport-3d-bioprintercompany provides 3D printed implants that the recipient’s body converts to bone.

Three-dimensional printing of human body parts is challenging in a number of ways. Replicating the complexity of anatomical structures is difficult. Ensuring the printed tissue survive transplantation in a living body is another problem.

The scientists in Spain have already engineered plasma-based, two-layered skin used successfully in the treatment of burns and other wounds in a large number of patients. The primary drawback to this method is that it takes 3 weeks to produce enough skin to cover an extensive burn or large wound. Another disadvantage is that the scientists must perform much of the process manually.

3D printing is similar to a desktop computer printer except that the nozzle on the 3D printer exudes biological components rather than ink. These biological components, or bio-inks, are essential to successful 3D printing of human organs and tissues.

To aid in the process, a computer controls the nozzles and flow of biological components so that the nozzles deposit the bio-inks on precise locations on the print bed.

Prints large area of skin in 35 minutes

The authors of the study describe how their 3D printing method generated a 100 x 100 centimeter area of skin in just under 35 minutes.

Like the scientists’ existing plasma-based manual method of producing skin, the 3D printing technology generates two layers of skin – the epidermis and the dermis. The printer starts by producing the epidermis, including the protective outermost layer of keratinized cells, known as the stratum corneum. Next, it prints the thicker, deeper dermis, complete with collagen-producing frank-magliochetti_bioprinter-skinfibroblasts.

The new 3D printing method is faster, but still complex. One of the authors of the report, Juan Francisco del Cañizo of the Hospital General Universitario Gregorio Marañón and Universidad Complutense de Madrid, notes:

“Knowing how to mix the biological components, in what conditions to work with them so that the cells don’t deteriorate, and how to correctly deposit the product is critical to the system.”

The research team tested the printed skin in test tubes and in immunodeficient mice. Transplantation of the printed skin into the mice helped the scientists test the long-term effects in a living animal. In both tests, the 3D printed skin was very similar to human skin and indistinguishable from the manually produced bi-layered skin from plasma.

There are two main potential uses for this 3D skin – to produce skin for research and laboratory testing of drugs and cosmetics, and to produce person-specific skin from the patient’s own cells to treat burns and other wounds. The research team is also investigating ways to use the technology to print other human tissues.

Source

http://iopscience.iop.org/article/10.1088/1758-5090/9/1/015006/meta

Frank Magliochetti is Managing Partner for Parcae Capital

  • North Andover, Massachusetts

This column of posts is directed at the Healthcare Industry.  Frank plans to release new sites dedicated to the industry. Frank currently assists companies who are building, restructuring, transforming and resurrecting there business’s. An example of his client base are, Xenetic Biosciences , IPC Medical Corp, Just Fellowship Corp, Environmental Services Inc., Parsons Post House LLC, ClickStream Corporation as well as having a business talk radio show; The Business Architect on the URBN network.

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Medical 3D Printing Advancements

Advancements in Medical 3D Printing

Three-dimensional (3D) printing has been around since the 1980s, when Chuck Hull patented the mechanical process of printing successive layers of material to create objects. Known as stereolithography or additive manufacturing, the process quickly spread beyond industry into a number of sectors, including medicine.
3d-printing-and-health_frankmagliochettireportA 3D printer is similar to a standard computer printer except that, instead of ink, liquid plastic, metal, polyvinyl alcohol, and other materials flow through its print nozzles. 3D printers are unique in that the process can create three-dimensional solid-state objects made from a variety of materials. Printed objects can be as simple or as intricate as needed by the designer without requiring extra steps in the manufacturing process.
In 1999, surgeons grew a human bladder by layering human bladder cells onto 3D printed scaffold then later transplanted the bladder into the patient that donated the cells. In 2002, scientists used bio-ink replicating kidney tissue to print a functioning kidney.
There have been several major advancements since the earliest days of medical 3D printing. While it is still not possible to print out an entire organ suitable for transplant, it is possible to use three-dimensional printing to create scaffold for growing organs, grow tissues for laboratory testing, make skin grafts for burn victims, print sheets of cardiac tissue that beats like a heart, and more.
State of the Art Medical 3D Printing
Scientists from Harvard University recently made the first 3D printed organ-on-a-chip with integrated sensing, which allows researchers to collect reliable data during laboratory studies. These organs-on-chips, also known as medical-3d-printing_frankmagliochettireportmicrophysiological systems, closely match the properties of a specific disease or individual patient cells suitable for use in the laboratory. These chips simplify data acquisition and allow researchers to change and customize the study design system, opening new avenues for in vitro tissue engineering, toxicology and drug screening research.
Other researchers use direct laser writing to shape and form 3D printed undifferentiated stem cells to create complex 3D structures for various biomedical applications. Another company recently released a realistic-feeling 3D printed arm modelstudents can use to learn how to suture skin. The company, San Draw, had previously released a 3D printed arm model suitable for practicing injections. The 3D printed skin simulates the anatomy and feel of real human skin to improve student training.
3D printing presents nearly unlimited potential in the production of surgical instruments, including forceps, hemostats, scalpel handles, clamps, and even surgical smoke evacuators. 3D printed surgical tools come out of the 3d-printing_medical-frankmagliochettireportprinter completely sterile and ready to use, saving both time and money in sterilization, packaging and storage. Printed tools also cost one-tenth as much as stainless steel tools. 3D printing could therefore boost surgery access in low-income areas and reduce the risk of infection in areas with limited access to sterilizers.
Researchers can print out and expose various body tissues to chemicals and other substances to study the reaction of toxins on healthy tissue. Now scientists can print out cancer cells and other types of disease cells to study how tumors grow and develop, and to evaluate the effects of various treatments on those printed cells.
Research and development of medical 3D printing will likely accelerate as scientists find new uses for the additive manufacturing process and manufacturers learn new techniques for making medical and surgical products. 3D printers will certainly become more commonplace in the surgical suite and in laboratories in the coming years.

Source
https://3dprintingindustry.com/3d-printing-basics-free-beginners-guide/history/
http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4782.html
https://www.researchgate.net/publication/309393081_3D_microfabrication_of_complex_structures_for_biomedical_applications_via_combination_of_subtractiveadditive_direct_laser_writing_and_3D_printing
https://3dprint.com/152558/san-draw-medical-suture-training/
https://3dprint.com/6652/3d-print-medical-tools/

Frank Magliochetti is Managing Partner for Parcae Capital.

  • North Andover, Massachusetts

This column of posts is directed at the Healthcare Industry.  Frank plans to release a new site dedicated to the industry.  He currently assists companies who are building, restructuring, transforming and resurrecting there business’s. An example of his client base are, Xenetic Biosciences , IPC Medical Corp, Just Fellowship Corp, Environmental Services Inc., Parsons Post House LLC, ClickStream Corporation as well as having a business talk radio show; The Business Architect on the URBN network.

frankmagliochetti_ParcaeCapital