Primul transplant de tesut printat realizat cu succes in China/ First succesful transplant of 3D printed living-tissue

Chinezii sunt deschizatori de drumuri in printarea 3D de tesuturi vii, realizand cu succes primul transplant de vase de sange obtinute prin bio-printare.

Aceasta realizare poate fi considerata primul pas intr-o noua era a organelor obtinute prin bio-printare, care au potentialul de a salva milioane de vieti.  

 Sichuan Revotek, compania chineza de biotehnologie, a anuntat inca de anul trecut finalizarea primei bio-imprimante din lume (imprimanta care poate produce tesuturi si organe vii). 

Saptamana trecuta compania a anuntat primul transplant de vase de sange obtinute prin bio-printare, devenind astfel deschizatori de drumuri in acest domeniu. 

 

Spre deosebire de imprimantele 3D care folosesc ca "cerneala" material plastic sau metal, bio-imprimantele folosesc celule stem. Deoarece acestea sunt preluate de la organismul care va primi transplantul, tesutul sau organul printat are sanse minime sa fie respins de organism. 

 

Compania chineza a folosit vasele de sange printate pentru a inlocui o parte din aorta abdominala a unei maimute. Tesutul obtinut prin bio-printare a fuzionat cu tesutul natural in doar 5 zile. 

Experimentul a fost apoi repetat pe 30 de maimute, interventia realizandu-se cu succes si toate avand un timp de recuperare foarte scurt.  

Cercetatorii afirma ca in numai 28 de zile tesutul implantat fuzioneaza cu tesutul natural, continuand sa se dezvolte impreuna intr-un vas de sange normal, aceasta fiind o realizare fara precedent.  

 

Ca un bonus, bio-imprimanta Sichuan Revotek este si eficienta, printand 10 cm de tesut in numai 2 minute. 

 

Desi aceasta tehnologie este inca la inceput, acesta reusita este un inceput promitator pentru bio-printarea unor organe complexe precum rinichi, ficat, etc care vor salva numeroase vieti. 

 

First succesful transplant of 3D printed living-tissue

The Chinese are pioneers in bio-printing living-tissue, succesfully performing the world’s first blood vessel transplant. 

This achievement can be seen as the first step into a new era of bio-printed organs, which has the potential to save countless lives. 

Sichuan Revotek, the Chinese biotech company, announced last year their development of the world’s first 3D bio-printer: a printer for living-tissue and organs. 

Last week, they announced the first bio-printed blood vessels transplant, thereby becoming the pioneers in this field. 

Unlike 3D printers, which use as their “ink” plastic or metal, bio-printers use “stem cell ink”. 

Because the stem cells are taken from the body which will receive the transplant, the bio-printed tissue or organ has a very small probability to be rejected. 

The Chinese company used the bio-printed blood vessels to replace one part of the abdominal aorta of a monkey. During the experiment, the bio-printed tissue started merging with the natural tissue in only 5 days. Afterwards, the experiment was repeated for 30 monkeys, all of whom remained in good health after the procedure.

 

Researchers say the printed tissue should be fully merged with the natural tissue of the recipient within 28 days, after which the merged tissue would grow together as one (which is an unprecedented achievement).

 

As a bonus feature, the Sichuan Revotek bio-printer is also quite time-efficient, printing 10 cm of tissue in only 2 minutes. 

 

Although the bio-printing technology is still in its infancy, this success is a promising start for the bio-printing of complex organs such as kidneys, livers, etc. that will save many lives.