Inhibition of pre-mRNA splicing by antisense RNA in vitro: effect of RNA containing sequences complementary to introns.

Abstract:

:The objective of the experiments described in this paper was to test the potential of antisense RNAs complementary to the internal portion of an intron to inhibit the splicing process and to determine the mechanism of such inhibition. The results obtained indicate that RNA fragments complementary to the internal portion of an intron can effectively inhibit the splicing of pre-mRNA. Inhibition was observed only with antisense RNA complementary to pre-mRNA suggesting that the inhibitory effect was due to the formation of a hybrid with the corresponding portion of the pre-mRNA's intron. The observed inhibition was not due to interference with possible intron elements essential for the splicing process, for the deletion of the sequences complementary to inhibitory antisense RNA from the corresponding pre-mRNA molecule did not affect the efficiency of a splicing reaction, and the addition of antisense RNA to pre-mRNA mutants carrying such deletions did not result in any inhibition. Our results indicate that the observed inhibition is a function of the length of the antisense RNA expressed as a fraction of an intron with which it interacts when antisense RNA is modified by incorporation of a "hinge" element, it loses its inhibitory potential suggesting that the inhibitory effect is probably due to limitation of conformational flexibility of an intron.

authors

Volloch V,Schweitzer B,Rits S

doi

10.1016/0006-291x(91)91757-4

subject

Has Abstract

pub_date

1991-09-30 00:00:00

pages

1600-5

issue

3

eissn

0006-291X

issn

1090-2104

pii

0006-291X(91)91757-4

journal_volume

179

pub_type

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