Cinci purcei deschid calea xenotransplanturilor
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Cei cinci purcelusi clonati din imagine ar putea fi primii pasi ai medicinei moderne catre o noua si revolutionara tehnica chirurgicala - xenotransplantul sau transplantarea de organe de animale la
Cei cinci purcelusi clonati din imagine ar putea fi primii pasi ai medicinei moderne catre o noua si revolutionara tehnica chirurgicala - xenotransplantul sau transplantarea de organe de animale la om, o metoda nu foarte bine cunoscuta, care in urmatorii patru ani ar putea deschide o piata ce va rula pana la 5 miliarde de dolari. Noel, Angel, Star, Joy si Mary, cei cinci grasuni nascuti in ziua de Craciun, au fost modificati genetic de savantii britanici ai PPL Therapeutics, care au reusit sa elimine din genomul de porc una dintre cele doua variante ale genei care impiedica transplantarea de organe de porc la om. Savantii PPL Therapeutics, care se afla la originea clonarii faimoasei oite Dolly, au gasit o modalitate prin care este dezactivata gena alfa 1,3 galactosil transfaraza, cea care se afla la originea reactiei de respingere a transplantului organelor de porcine de catre organismul uman. "Odata cu eliminarea unuia dintre obstacolele tehnologice majore, promisiunea xenotransplantului este acum o realitate care are potentialul de a revolutiona industria transplanturilor", a declarat Alan Colman, cercetatorul sef al PPL Therapeutics. Pentru a putea fi folositi efectiv ca furnizori de organe pentru xenotransplanturi, "urmasii" celor cinci vor trebui sa mai sufere cateva modificari genetice si, de asemenea, sa convinga scepticii acestei tehnici chirurgicale ca, odata cu organele lor, nu vor transmite oamenilor si sensibilitatea la o larga gama de noi afectiuni.
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