Israeli Scientists Unveil World’s First 3D-Printed Heart with Human Tissue BREITBART JERUSALEM 15 Apr 2019
(AFP) — Scientists in Israel unveiled a 3D print of a heart with human tissue and vessels on Monday, calling it a first and a “major medical breakthrough” that advances possibilities for transplants.
The heart, about the size of a rabbit’s, marked “the first time anyone anywhere has successfully engineered and printed an entire heart replete with cells, blood vessels, ventricles and chambers,” said Tel Aviv University’s Tal Dvir, who led the project.
“People have managed to 3D-print the structure of a heart in the past, but not with cells or with blood vessels,” he said.
But the scientists said many challenges remain before fully working 3D-printed hearts will be available for transplant into patients.
Bild entfernt (keine Rechte) This photo taken on April 15, 2019 at the University of Tel Aviv shows a 3D print of heart with human tissue. - Scientists in Israel on Monday unveiled a 3D print of a heart with human tissue and vessels, calling it a first and a "major medical breakthrough" that advances possibilities for transplants. (Photo by JACK GUEZ / AFP) (Photo credit should read JACK GUEZ/AFP/Getty Images)
Journalists were shown a 3D print of a heart about the size of a cherry at Tel Aviv University on Monday as the researchers announced their findings, published in the journal Advanced Science.
Researchers must now teach the printed hearts “to behave” like real ones. Then they plan to transplant them into animal models, said Dvir.
“Maybe, in 10 years, there will be organ printers in the finest hospitals around the world, and these procedures will be conducted routinely,” he said.
But he said hospitals would likely start with simpler organs than hearts.
Israeli Researchers Print 3D Heart Using Patient’s Own Cells By Michael Arnold April 15, 2019, 8:30 AM EDT
Small, rabbit-sized hearts of bio-ink printed in Tel Aviv lab
Technology holds out hope of patches to combat heart disease
Israeli researchers have printed a 3D heart using a patient’s own cells, something they say could be used to patch diseased hearts -- and possibly, for full transplants.
The heart the Tel Aviv University team printed in about three hours is too small for humans -- about 2.5 centimeters, or the size of a rabbit’s heart. But it’s the first to be printed with all blood vessels, ventricles and chambers, using an ink made from the patient’s own biological materials.
“It’s completely biocompatible and matches the patient,” reducing the chances of rejection inside the body, said Tal Dvir, the professor who directed the project.
Researchers took fatty tissue from a patient, then separated it into cellular and non-cellular components. The cells were then “reprogrammed” to become stem cells, which turned into heart cells. The non-cellular materials were turned into a gel that served as the bio-ink for printing, Dvir explained.
Previously, only simple tissues -- without the blood vessels they need to live and function -- had been printed, according to a press release from the university. The breakthrough was reported Monday in a paper in Advanced Science.
Personalized Organs
“Patients will no longer have to wait for transplants or take medications to prevent their rejection,” the press release said. “Instead, the needed organs will be printed, fully personalized for every patient.”
In a room off a warren of laboratories, a massive 3D printer sent a thin stream of “bio-ink” into a small square container. Inside sat a small heart the size and color of several pencil erasers.
The cells need to mature for another month or so and then should be able to beat and contract, Dvir said. The printed hearts could be tested on animals but there’s no timetable for testing hearts on humans, he said.
A human-sized heart might take a whole day to print and would require billions of cells, compared to the millions used to print these mini-hearts, Dvir said.
While it’s not clear a printer can produce hearts that are superior to human ones, “perhaps by printing patches we can improve or take out diseased areas in the heart and replace them with something that works” perfectly, he said.