Lack of somatic mutation in a kappa light chain transgene.

Abstract:

:Analysis of mice transgenic for immunoglobulin genes should allow definition of the cis-acting DNA sequences required to target somatic mutation to antibody V genes. We have looked for mutations in a chimeric kappa transgene encoding a V region specific for the hapten 2-phenyloxazolone (phOx) linked to a rat C kappa gene. Two independent lines of transgenic mice were hyperimmunized with phOx and splenic hybridomas established. In B cells that had been selected by antigen and which used mouse anti-phOx genes, the endogenous sequences were found to be mutated whereas the transgene remained unchanged. These results suggest either that (a) if the transgene is a "passenger" gene expressed at a low level, transgene mutation is a rare event, or that (b) sequences far from the kappa coding region are necessary to direct somatic mutation.

journal_name

Eur J Immunol

authors

Sharpe MJ,Neuberger M,Pannell R,Surani MA,Milstein C

doi

10.1002/eji.1830200625

subject

Has Abstract

pub_date

1990-06-01 00:00:00

pages

1379-85

issue

6

eissn

0014-2980

issn

1521-4141

journal_volume

20

pub_type

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