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Title: A dynamic intron retention program enriched in RNA processing genes regulates gene expression during terminal erythropoiesis

Journal Article · · Nucleic Acids Research
DOI:https://doi.org/10.1093/nar/gkv1168· OSTI ID:1256072
 [1];  [2];  [2];  [3];  [1];  [2]
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. New York Blood Center, New York, NY (United States). Red Cell Physiology Laboratory

Differentiating erythroblasts execute a dynamic alternative splicing program shown here to include extensive and diverse intron retention (IR) events. Cluster analysis revealed hundreds of developmentally-dynamic introns that exhibit increased IR in mature erythroblasts, and are enriched in functions related to RNA processing such as SF3B1 spliceosomal factor. Distinct, developmentally-stable IR clusters are enriched in metal-ion binding functions and include mitoferrin genes SLC25A37 and SLC25A28 that are critical for iron homeostasis. Some IR transcripts are abundant, e.g. comprising ~50% of highly-expressed SLC25A37 and SF3B1 transcripts in late erythroblasts, and thereby limiting functional mRNA levels. IR transcripts tested were predominantly nuclear-localized. Splice site strength correlated with IR among stable but not dynamic intron clusters, indicating distinct regulation of dynamically-increased IR in late erythroblasts. Retained introns were preferentially associated with alternative exons with premature termination codons (PTCs). High IR was observed in disease-causing genes including SF3B1 and the RNA binding protein FUS. Comparative studies demonstrated that the intron retention program in erythroblasts shares features with other tissues but ultimately is unique to erythropoiesis. We conclude that IR is a multi-dimensional set of processes that post-transcriptionally regulate diverse gene groups during normal erythropoiesis, misregulation of which could be responsible for human disease.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC02-05CH1123; AC02-05CH11231
OSTI ID:
1256072
Alternate ID(s):
OSTI ID: 1379053
Journal Information:
Nucleic Acids Research, Vol. 44, Issue 2; ISSN 0305-1048
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 118 works
Citation information provided by
Web of Science

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The changing paradigm of intron retention: regulation, ramifications and recipes journal November 2019
Dynamic changes in intron retention are tightly associated with regulation of splicing factors and proliferative activity during B-cell development journal December 2019
An Ultraconserved Element (UCE) controls homeostatic splicing of ARGLU1 mRNA journal November 2016
Widespread intronic polyadenylation diversifies immune cell transcriptomes journal April 2018
Sequences encoding C2H2 zinc fingers inhibit polyadenylation and mRNA export in human cells journal November 2018
The alternative splicing program of differentiated smooth muscle cells involves concerted non-productive splicing of post-transcriptional regulators journal June 2016
Predictive models of subcellular localization of long RNAs journal February 2019
A dynamic intron retention program in the mammalian megakaryocyte and erythrocyte lineages journal April 2016
We skip to work: alternative splicing in normal and malignant myelopoiesis journal January 2018
Spliceosomal gene mutations in myelodysplasia: molecular links to clonal abnormalities of hematopoiesis journal May 2016
Intron Retention as a Mode for RNA-Seq Data Analysis journal July 2020
HBA-DEALS: accurate and simultaneous identification of differential expression and splicing using hierarchical Bayesian analysis journal July 2020
Comprehensive Proteomic Analysis of Human Erythropoiesis journal August 2016
Gene-centric functional dissection of human genetic variation uncovers regulators of hematopoiesis journal May 2019
Aberrant splicing and defective mRNA production induced by somatic spliceosome mutations in myelodysplasia journal September 2018
SUPPA2: fast, accurate, and uncertainty-aware differential splicing analysis across multiple conditions journal March 2018
Epigenetic therapy of myelodysplastic syndromes connects to cellular differentiation independently of endogenous retroelement derepression. text January 2020
Gene-Specific Intron Retention Serves as Molecular Signature that Distinguishes Melanoma from Non-Melanoma Cancer Cells in Greek Patients journal February 2019
An atlas of alternative splicing profiles and functional associations reveals new regulatory programs and genes that simultaneously express multiple major isoforms journal August 2017
Nascent RNA and the Coordination of Splicing with Transcription journal August 2019
CLASS2: accurate and efficient splice variant annotation from RNA-seq reads journal March 2016
Co-regulatory activity of hnRNP K and NS1-BP in influenza and human mRNA splicing journal June 2018
Intron retention as a component of regulated gene expression programs journal April 2017
Increased intron retention is a post‐transcriptional signature associated with progressive aging and Alzheimer’s disease journal March 2019
Dynamic Transcriptional Landscape of the Early Chick Embryo journal September 2019
High Resolution Annotation of Zebrafish Transcriptome Using Long-Read Sequencing posted_content August 2017
Global intron retention mediated gene regulation during CD4 + T cell activation journal July 2016
Intron retention enhances gene regulatory complexity in vertebrates journal November 2017
IntEREst: intron-exon retention estimator journal April 2018
Alternative splicing as a regulator of development and tissue identity journal May 2017
A Conserved Splicing Silencer Dynamically Regulates O-GlcNAc Transferase Intron Retention and O-GlcNAc Homeostasis journal August 2017
IRFinder: assessing the impact of intron retention on mammalian gene expression journal March 2017
Alternative splicing analysis in human monocytes and macrophages reveals MBNL1 as major regulator journal May 2018
RNA-binding proteins in hematopoiesis and hematological malignancy journal May 2019
Glycogen synthase kinase-3 and alternative splicing journal August 2018
Timely-regulated intron retention as device to fine-tune protein expression journal June 2017
A Comprehensive Analysis of Alternative Splicing in Paleopolyploid Maize journal May 2017
Intron retention is regulated by altered MeCP2-mediated splicing factor recruitment journal May 2017
Intron retention is a source of neoepitopes in cancer journal August 2018
Nuclear sorting of RNA journal October 2019
Genome-wide analysis of alternative splicing events during response to drought stress in tomato ( Solanum lycopersicum L.) journal August 2019
Intron retention as a component of regulated gene expression programs text January 2017
RNA binding proteins in hematopoiesis and hematological malignancy. text January 2019
The alternative splicing program of differentiated smooth muscle cells involves concerted non-productive splicing of post-transcriptional regulators text January 2016
Post‐Transcriptional Noise Control journal June 2019
High resolution annotation of zebrafish transcriptome using long-read sequencing journal July 2018
Epigenetic therapy of myelodysplastic syndromes connects to cellular differentiation independently of endogenous retroelement derepression journal December 2019
Blood Relatives: Splicing Mechanisms underlying Erythropoiesis in Health and Disease journal January 2018
Antisense Oligonucleotides Modulating Activation of a Nonsense-Mediated RNA Decay Switch Exon in the ATM Gene journal December 2016