| 2000 |
Htra2-beta1 (TRA2B) promotes inclusion of SMN exon 7 by binding an AG-rich exonic splicing enhancer in SMN exon 7, stimulating full-length SMN2 expression in human and mouse cells carrying an SMN2 minigene. |
Minigene splicing assay in human/mouse cells, RNA binding assay, transient expression |
Proceedings of the National Academy of Sciences of the United States of America |
High |
10931943
|
| 1997 |
TRA2B (htra2-beta1) is a nuclear SR-like protein that colocalizes with SC35 in nuclear speckles and interacts with multiple SR proteins; a second isoform, htra2-beta2, generated by alternative splicing lacks the SR domain. |
Yeast two-hybrid screen using SC35 as bait, immunofluorescence colocalization, subcellular fractionation |
DNA and cell biology |
Medium |
9212162
|
| 1998 |
The TRA2B isoform htra2-beta3 lacks the first SR domain, is expressed predominantly in brain, liver, testis and kidney, localizes to the nucleus, and interacts with a subset of SR proteins, paralleling a variant found in the Drosophila male germline. |
RT-PCR, yeast two-hybrid, immunofluorescence, radiation hybrid mapping |
Genomics |
Medium |
9790768
|
| 2002 |
SRp30c stimulates SMN exon 7 inclusion through the same AG-rich enhancer as TRA2B, but does so indirectly via a direct protein–protein interaction with TRA2B; in the absence of the TRA2B binding site on the enhancer, SRp30c fails to associate with SMN exon 7. |
Minigene splicing assay, co-immunoprecipitation, RNA pull-down |
Human molecular genetics |
High |
11875052
|
| 2009 |
Oxidative stress (arsenite) induces translocation of TRA2B from the nucleus to the cytoplasm associated with enhanced phosphorylation, and TRA2B regulates alternative splicing of CD44 (combinatorial inclusion of variable exons) and controls cell growth. |
Immunofluorescence, Western blot (phosphorylation), siRNA knockdown, overexpression, minigene/RT-PCR, cell growth assay |
American journal of physiology. Cell physiology |
Medium |
19439532
|
| 2010 |
Homozygous deletion of Sfrs10 (TRA2B) in mice causes early embryonic lethality around E7.5, demonstrating an essential role during mouse embryogenesis; motor-neuron-specific deletion does not produce an SMA phenotype, and Sfrs10 deletion in MEFs increases SmnΔ7 levels modestly but has no impact on full-length Smn splicing. |
Conditional knockout (Cre/loxP), embryo phenotyping, RT-PCR, MEF-derived cells with recombinant Cre |
Human molecular genetics |
High |
20190275
|
| 2011 |
SFRS10 (TRA2B) regulates alternative splicing of LPIN1 pre-mRNA; reduced SFRS10 favors the lipogenic LPIN1β isoform, and LPIN1β-specific siRNA abolishes the lipogenic effects of decreased SFRS10, placing TRA2B upstream of LPIN1β in hepatic lipogenesis. |
siRNA knockdown, Sfrs10 heterozygous mice, hepatic gene expression analysis, VLDL secretion assay, epistasis by rescue experiment |
Cell metabolism |
High |
21803291
|
| 2012 |
Digitoxin depletes TRA2B (and SRSF3) from cells; re-expression of TRA2B after digitoxin treatment restores normal splicing of TRA2B-target exons, demonstrating that TRA2B depletion directly mediates the digitoxin-induced alternative splicing changes. |
Transcriptome-wide splicing analysis (RNA-seq), rescue by re-expression, motif enrichment analysis |
RNA (New York, N.Y.) |
High |
22456266
|
| 2014 |
TRA2B is required for survival of neural progenitor cells; cortex-specific Tra2b knockout mice display apoptosis of neural progenitor cells and disorganization of the cortical plate. |
Cortex-specific conditional knockout (Cre/loxP), immunohistochemistry, TUNEL apoptosis assay |
The Journal of comparative neurology |
High |
23818142
|
| 2014 |
Neuronal-specific deletion of Tra2b causes massive apoptosis in ventricular layers of the cortex and perinatal lethality; Tra2b loss leads to increased p21 (CDKN1A) expression, which is functionally linked to neuronal precursor cell death. In vivo exon array analysis identifies Tubulinδ1 and Shugoshin-like2 as splicing targets of Tra2b. |
Nestin-Cre conditional knockout, exon arrays, immunohistochemistry, TUNEL, siRNA in NSC34 cells, Western blot |
PloS one |
High |
24586484
|
| 2014 |
TRA2B promotes inclusion of PKCδ exon 9 in the PKCδI splice variant during 3T3L1 preadipocyte cell cycle; mutagenesis of TRA2B binding sites on exon 9 and RNA-immunoprecipitation confirmed direct binding is required for this splicing event, and PKCδI is required for mitotic clonal expansion of preadipocytes. |
Minigene splicing assay, mutagenesis, RNA-immunoprecipitation, siRNA knockdown, cell proliferation assay |
The Journal of biological chemistry |
High |
25261467
|
| 2015 |
Tra2b knockdown in Xenopus causes defective somitogenesis and other developmental defects; RNA-seq identified 142 Tra2b-dependent splice changes (mostly intron retention and exon skipping). A novel Wnt11b isoform retaining the last intron (Wnt11b-short) acts as a dominant-negative ligand and its retention recapitulates the failure to form somites, placing Tra2b upstream of Wnt11b isoform balance in somitogenesis. |
Morpholino knockdown, RNA-seq, minigene intron retention induction, dominant-negative rescue experiment in Xenopus |
Cell reports |
High |
25620705
|
| 2016 |
A TRA2B-DNAH5 gene fusion in lung squamous cell carcinoma promotes malignant progression through a SIRT6-ERK1/2-MMP1 signaling axis; ERK1/2 inhibition with selumetinib efficiently inhibits growth of lung SCC expressing this fusion. |
Exon array analysis, molecular cloning of fusion, functional studies (pathway analysis, ERK1/2 inhibition), patient sample analysis |
Cell research |
Medium |
27670699
|
| 2017 |
ILDR1 and ILDR2 (angulin proteins) physically bind to TRA2B (as well as TRA2A and SRSF1) and translocate to the nucleus when TRA2B is present; knockdown of ILDR1/ILDR2 alters alternative splicing of TUBD1 and IQCB1, targets regulated by TRA2B. |
Co-immunoprecipitation, nuclear translocation assay, siRNA knockdown, minigene splicing assay |
Scientific reports |
Medium |
28785060
|
| 2019 |
hnRNPA1 interacts with a G-quadruplex (G4) structure in the TRA2B promoter and stimulates TRA2B transcription; G4 formation suppresses TRA2B transcription, whereas hnRNPA1 binding to G4 relieves this repression. hnRNPU also positively regulates TRA2B promoter activity but does not interact with G4. |
Circular dichroism, EMSA, ChIP, minigene assay, siRNA knockdown, promoter reporter assay |
Scientific reports |
High |
31311954
|
| 2022 |
Germline loss-of-function variants clustered in the 5′ region of TRA2B (upstream of an alternative translation start site) decrease canonical Tra2β-1 isoform expression while increasing the shorter Tra2β-3 isoform (lacking the N-terminal RS1 domain); increased Tra2β-3 interferes with CHEK1 exon 3 inclusion, revealing a dominant-negative mechanism underlying the associated neurodevelopmental syndrome. |
RNA sequencing of patient cells, Western blot of isoforms, HEK-293 transfection with Tra2β1-GFP, Tra2β3-GFP, and CHEK1 exon 3 minigene |
Genetics in medicine : official journal of the American College of Medical Genetics |
High |
36549593
|
| 2023 |
Two TRA2B isoforms play distinct roles in myogenic differentiation: they differentially regulate alternative splicing of TGFBR2, thereby triggering canonical TGF-β signalling cascades differently. |
Iso-seq, single-cell RNA-seq, isoform-specific functional analysis in myogenesis model |
Cell proliferation |
Medium |
37705195
|
| 2025 |
An ultra-conserved poison exon (PE) in the Tra2b gene controls Tra2β protein concentration via nonsense-mediated decay; disruption of this PE in mice causes azoospermia due to catastrophic apoptotic cell death during meiotic prophase, associated with elevated Tra2β protein levels driving aberrant hyper-responsive splicing patterns. Mitotically active germ cells are spared despite requiring Tra2b function, indicating the PE prevents toxic Tra2β accumulation incompatible with meiotic prophase. |
Mouse genetics (PE deletion by CRISPR/homologous recombination), histology, RNA-seq, protein expression analysis |
The EMBO journal |
High |
39748121
|
| 2026 |
TRA2B promotes synthesis of the constitutively active androgen receptor splice variant AR-V7 in prostate cancer cells at the expense of full-length AR isoforms; TRA2B and its ortholog TRA2A were identified as selective protein interactors of AR-V7 mRNA, and attenuation of TRA2-mediated splicing diminishes prostate cancer cell growth. |
RNA-targeting CasRx approach for mRNA interactor identification, siRNA knockdown, cell growth assay, correlation with CRPC transcriptomic data |
The Journal of clinical investigation |
Medium |
41919500
|