Naukowcy wyhodowali klon klona.

Międzynarodowy zespół badawczy sklonował pierwszego sklonowanego psa. Wszystko po to, by sprawdzić czy identyczne pod względem genetycznym zwierzęta cierpią na te same choroby.

Naukowcy z uniwersytetów w Seulu, Illinois i Michigan ogłosili, że wyhodowali duplikaty sklonowanego psa. Chcą dowiedzieć się więcej o tym, na ile sklonowane zwierzęta są w stanie żyć, czy starzeją się szybciej i czy cierpią z powodu ukrytych wad.

Pies Tai, chart afgański, został sklonowany w 2005 roku. Badacze z Seulu wszczepili jego komórki macierzyste do jajników, po czym implantowali je do macicy.

W ten sposób narodziły się trzy szczenięta, z których przeżyło tylko jedno – samiec o imieniu Snapi- pierwszy szczęśliwie sklonowany pies.

Snapi wiódł normalne i zdrowe życie w kampusie uniwersyteckim w Seulu, dopóki nie zdechł na raka w wieku 10 lat. Jego "oryginał" Tai zdechł w wieku 12 lat, także na raka. Naukowcy uważają, że oba psy odeszły w wieku, w którym umiera większość chartów afgańskich, a i ich choroby były charakterystyczne dla tej rasy.

Gdy Sanpi miał pięć lat, naukowcy pobrali od niego komórki macierzyste i implantowali je do 94 embrionów. W rezultacie zabiegu urodziły się cztery sklonowane szczenięta.

Cztery dni po narodzinach jeden ze szczeniaków zdechł w wyniku biegunki niewiadomego pochodzenia.

W czasie pisania tego artykułu trzy pozostałe pieski miały już po dziewięć miesięcy, były zdrowe i ruchliwe. Wyniki badań zostały niedawno opublikowane w piśmie Nature.

Badacze chcieli dowiedzieć się więcej o jakości życia sklonowanych zwierząt. Jak powiedzieli, na dzisiaj niewiele dowodów wskazuje na degradację ich zdrowia. O klonach klonów wiadomo jeszcze mniej, choć planuje się obserwację i badanie pozostałych przy życiu trzech psów. 

Autor: 
Tłum. Emilia Liberda
Źródło: 

I.Z.K./blic.rs

Dział: 

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