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Updated: Jul 18, 2026

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Derivation of Stem Cell Lines from Mouse Preimplantation Embryos
Published on: August 20, 2017
La propagación clonal de la descendencia de primates mediante la división del embrión
A W Chan1, T Dominko, C M Luetjens
1Oregon Regional Primate Research Center, Beaverton, OR 97006, USA.
Resumen
Los científicos han creado primates no humanos genéticamente idénticos mediante la división de embriones. Este avance ofrece un modelo ideal para el estudio de enfermedades humanas y demuestra el potencial de crías vivas clonadas.
Área de la Ciencia:
- Biología de la reproducción Biología reproductiva.
- Genética de los primates.
- Biología del desarrollo Biología del desarrollo.
Sus antecedentes:
- Los métodos actuales de clonación no producen primates idénticos en sus componentes nucleares y citoplasmáticos.
- Los modelos de primates idénticos son cruciales para investigar las enfermedades humanas.
Objetivo del estudio:
- Para producir embriones de primates no humanos genéticamente idénticos utilizando la separación de blastómeros y la reagregación.
- Evaluar la viabilidad y el potencial de desarrollo de estos embriones clonados.
Principales métodos:
- Los embriones de rhesus en etapa de escisión se dividieron y los blastómeros se reagruparon para crear múltiples embriones genéticamente idénticos.
- Un total de 368 múltiplos fueron generados a partir de 107 embriones de rhesus.
- Se realizaron 13 transferencias de embriones, con tasas de embarazo en comparación con los controles de fertilización in vitro.
Principales resultados:
- Se produjeron con éxito embriones de primates no humanos genéticamente idénticos como pares gemelos y más grandes.
- Se establecieron cuatro embarazos a partir de las transferencias de embriones.
- Se logró el nacimiento de una mono rhesus hembra clonada sana, Tetra, a partir de un cuarto de embrión.
Conclusiones:
- La división y reagregación de embriones es un método viable para producir primates no humanos genéticamente idénticos.
- Esta técnica puede dar lugar a descendencia viva, proporcionando un modelo valioso para la investigación de enfermedades.
- La exitosa clonación de Tetra valida el potencial de este enfoque para futuros estudios.
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