Preferential extrachromosomal localization of exogenous DNA in transgenic silkworm Bombyx mori L.
Mol Gen Genet
; 236(2-3): 326-30, 1993 Jan.
Article
de En
| MEDLINE
| ID: mdl-8382341
ABSTRACT
Transgenic silkworms (Bombyx mori L.) were obtained by microinjection of plasmid pPrC-LTR1.5, which carris 1.5 DNA copies of Rous sarcoma virus (RSV) long terminal repeats (LTRs) inserted in the vector pBR322. The transgene was transmitted over the three generations obtained up to now. Most of the exogenous DNA failed to integrate into the genome and persisted as an extrachromosomal element that is subject to rearrangements. Plasmids carrying only part of the input DNA together with fragments of silkworm DNA were rescued from the transgenic animals. One of the rescued plasmids contained a sequence which belongs to a family of evolutionarily conserved repeated sequences.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Plasmides
/
Bombyx
/
Animal génétiquement modifié
/
Virus du sarcome aviaire
/
Hérédité extrachromosomique
Limites:
Animals
Langue:
En
Journal:
Mol Gen Genet
Année:
1993
Type de document:
Article