TY - JOUR
T1 - Minor class splicing shapes the zebrafish transcriptome during development
AU - Markmiller, Sebastian
AU - Cloonan, Nicole
AU - Lardelli, Rea M
AU - Doggett, Karen
AU - Keightley, Maria-Cristina
AU - Boglev, Yeliz
AU - Trotter, Andrew J
AU - Ng, Annie Y
AU - Wilkins, Simon J
AU - Verkade, Heather
AU - Ober, Elke
AU - Field, Holly A
AU - Grimmond, Sean M
AU - Lieschke, Graham J
AU - Stainier, Didier Y R
AU - Heath, Joan K
PY - 2014/2/25
Y1 - 2014/2/25
N2 - Minor class or U12-type splicing is a highly conserved process required to remove a minute fraction of introns from human pre-mRNAs. Defects in this splicing pathway have recently been linked to human disease, including a severe developmental disorder encompassing brain and skeletal abnormalities known as Taybi-Linder syndrome or microcephalic osteodysplastic primordial dwarfism 1, and a hereditary intestinal polyposis condition, Peutz-Jeghers syndrome. Although a key mechanism for regulating gene expression, the impact of impaired U12-type splicing on the transcriptome is unknown. Here, we describe a unique zebrafish mutant, caliban (clbn), with arrested development of the digestive organs caused by an ethylnitrosourea-induced recessive lethal point mutation in the rnpc3 [RNA-binding region (RNP1, RRM) containing 3] gene. rnpc3 encodes the zebrafish ortholog of human RNPC3, also known as the U11/U12 di-snRNP 65-kDa protein, a unique component of the U12-type spliceosome. The biochemical impact of the mutation in clbn is the formation of aberrant U11- and U12-containing small nuclear ribonucleoproteins that impair the efficiency of U12-type splicing. Using RNA sequencing and microarrays, we show that multiple genes involved in various steps of mRNA processing, including transcription, splicing, and nuclear export are disrupted in clbn, either through intron retention or differential gene expression. Thus, clbn provides a useful and specific model of aberrant U12-type splicing in vivo. Analysis of its transcriptome reveals efficient mRNA processing as a critical process for the growth and proliferation of cells during vertebrate development.
AB - Minor class or U12-type splicing is a highly conserved process required to remove a minute fraction of introns from human pre-mRNAs. Defects in this splicing pathway have recently been linked to human disease, including a severe developmental disorder encompassing brain and skeletal abnormalities known as Taybi-Linder syndrome or microcephalic osteodysplastic primordial dwarfism 1, and a hereditary intestinal polyposis condition, Peutz-Jeghers syndrome. Although a key mechanism for regulating gene expression, the impact of impaired U12-type splicing on the transcriptome is unknown. Here, we describe a unique zebrafish mutant, caliban (clbn), with arrested development of the digestive organs caused by an ethylnitrosourea-induced recessive lethal point mutation in the rnpc3 [RNA-binding region (RNP1, RRM) containing 3] gene. rnpc3 encodes the zebrafish ortholog of human RNPC3, also known as the U11/U12 di-snRNP 65-kDa protein, a unique component of the U12-type spliceosome. The biochemical impact of the mutation in clbn is the formation of aberrant U11- and U12-containing small nuclear ribonucleoproteins that impair the efficiency of U12-type splicing. Using RNA sequencing and microarrays, we show that multiple genes involved in various steps of mRNA processing, including transcription, splicing, and nuclear export are disrupted in clbn, either through intron retention or differential gene expression. Thus, clbn provides a useful and specific model of aberrant U12-type splicing in vivo. Analysis of its transcriptome reveals efficient mRNA processing as a critical process for the growth and proliferation of cells during vertebrate development.
KW - Animals
KW - Base Sequence
KW - Gene Expression Profiling
KW - Gene Expression Regulation, Developmental
KW - Intestines
KW - Liver
KW - Microarray Analysis
KW - Molecular Sequence Data
KW - Pancreas
KW - Point Mutation
KW - Protein Conformation
KW - RNA Splicing
KW - RNA, Small Nuclear
KW - RNA-Binding Proteins
KW - Real-Time Polymerase Chain Reaction
KW - Sequence Analysis, RNA
KW - Spliceosomes
KW - Zebrafish
KW - Zebrafish Proteins
U2 - 10.1073/pnas.1305536111
DO - 10.1073/pnas.1305536111
M3 - Journal article
C2 - 24516132
SN - 0027-8424
VL - 111
SP - 3062
EP - 3067
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 8
ER -