Related Experiment Video
Updated: Jun 24, 2026

Using the E1A Minigene Tool to Study mRNA Splicing Changes
Published on: April 22, 2021
Alternative splicing in exon 9 of glucocorticoid receptor pre-mRNA is regulated by SRp40
Xue-Bo Yan1, Chen-Hong Tang, Yan Huang
1Anhui Geriatric Institute, The First Affiliated Hospital of Anhui Medical University, Anhui, China.
Abstract:
Increasing evidence indicates that alternative splicing of human glucocorticoid receptor (GR) transcripts is implicated in the development of glucocorticoid resistance but the underlying mechanism was not well known. Serine/arginine-rich (SR) proteins and heterogeneous nuclear ribonucleoprotein (hnRNP) A1 play an important role in the spliceosome assembly. In this study, we analyzed the effects of different SR proteins and hnRNP A1 on the alternative splicing of GR pre-mRNA in HeLa and 293T cells using a minigene transfection assay. Our results revealed that only SRp40 could induce a GRalpha to GRbeta shift of pre-mRNA splicing in exon 9 in HeLa cells and this effect induced by SRp40 was further confirmed by small interfering RNA study. However, in 293T cells, SRp40 could not induce this shift. These results indicated that SRp40 may influence the alternative splicing of GR pre-mRNA to regulate the ratio of GRalpha to GRbeta, and this effect is cell-dependent.
Related Concept Videos
Alternative RNA Splicing
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
Alternative RNA Splicing
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
RNA Splicing
RNA Splicing
Chromatin Structure Regulates pre-mRNA Processing
The chromatin structure, especially...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon has three reading...

