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Spliceostatin A, the FR901464 (HY-16212) methylated derivative, is a potent anti-tumor agent. Spliceostatin A inhibits splicing and promotes pre-mRNA accumulation by binding SF3B1. SF3B1 is a subcomplex of U2 small nuclear ribonucleoprotein in the spliceosome. Spliceostatin A induces Apoptosis in chronic lymphocytic leukemia (CLL) cells .
BPN-15477 is a potent SMC (splicing modulator compound) that restores correct splicing of ELP1 (Elongator complex protein 1) exon 20. BPN-15477 corrects splicing of the ELP1 transcript, significantly increases the level of functional protein in vivo in all tissues, including brain. BPN-15477 can be used for frontotemporal dementia research .
UHMCP1 dihydrochloride is a potent UHM domainsplicing inhibitor with a Kd value of 79 µM. UHMCP1 dihydrochloride prevents the SF3b155/U2AF 65 interaction. UHMCP1 dihydrochloride impacts cell viability and RNA splicing .
Thailanstatin D, an analogue of Thailanstatin A, is able to inhibit AR-V7 gene splicing by interfering the interaction between U2AF65 and SAP155 and preventing them from binding to polypyrimidine tract located between the branch point and the 3' splice site. Thailanstatin D exhibits a potent tumor inhibitory effect on human CRPC xenografts leading to cell apoptosis .
OSMI-3 (Compound 2b) is a potent, long-lasting, and cell-permeable O-linked N-acetylglucosamine transferase (OGT) inhibitor. Cells contain a large nuclear pool of partially splicedOGT transcript, and OSMI-3 increases detained intron splicing in cells .
UHMCP1 is a chemical probe of U2AF homology motifs (UHM) with a Kd of 79 μM. UHMCP1 prevents the SF3b155/U2AF65 interaction, impacts RNA splicing and cell viability. UHMCP1 has potential anticancer properties .
IRE1α kinase-IN-2 is a potent IRE1α kinase inhibitor, with an EC50 of 0.82 μM. IRE1α kinase-IN-2 inhibits IRE1α kinase autophosphorylation (IC50=3.12 μM). IRE1α kinase-IN-2 inhibits XBP1 mRNA splicing in the WT cell lines .
Pladienolide B is a potent cancer cell growth inhibitor that targets the SF3B1 subunit of the spliceosome. Pladienolide B exerts antitumor activities mediated through the inhibition of pre-mRNA splicing. Pladienolide B induces apoptosis .
Madrasin (DDD00107587) is a splicing inhibitor that prevents formation of both splicing intermediates and products in vitro and interferes with one or more early steps in the pathway of spliceosome assembly. Madrasin also can inhibit pre-mRNA splicing in vitro and modify splicing of endogenous pre-mRNA in cells .
Telaglenastat (CB-839) is a first-in-class, selective, reversible and orally active glutaminase 1 (GLS1) inhibitor. Telaglenastat selectively inhibits GLS1splice variants KGA (kidney-type glutaminase) and GAC (glutaminase C) compared to GLS2. The IC50s are 23 nM and 28 nM for endogenous glutaminase in mouse kidney and brain, respectively. Telaglenastat inuduces autophagy and has antitumor activity .
Telaglenastat (CB-839) hydrochloride is a first-in-class, selective, reversible and orally active glutaminase 1 (GLS1) inhibitor. Telaglenastat hydrochloride selectively inhibits GLS1splice variants KGA (kidney-type glutaminase) and GAC (glutaminase C) compared to GLS2. The IC50s are 23 nM and 28 nM for endogenous glutaminase in mouse kidney and brain, respectively. Telaglenastat hydrochloride inudces autophagy and has antitumor activity .
NVS-SM2 is a potent, orally active and brain-penetrant SMN2 splicing enhancer with an EC50 of 2 nM for SMN. NVS-SM2 enhances U1-pre-mRNA association. NVS-SM2 promotes exon 7 inclusion and restores normal survival motor neuron (SMN) protein expression. NVS-SM2 can be used for spinal muscular atrophy (SMA) research .
CD33 splicing modulator 1 (Compound 1) is a CD33 splicing modulator. CD33/Siglec 3 is a myeloid lineage cell surface receptor that is known to regulate microglia activity. CD33 splicing modulator 1 increases exon 2 skipping in cellular mRNA pools. CD33 splicing modulator 1 has the potential for the research of neurodegenerative disease including Alzheimer's disease .
CD33 splicing modulator 1 (Compound 1) hydrochloride is a CD33 splicing modulator. CD33/Siglec 3 is a myeloid lineage cell surface receptor that is known to regulate microglia activity. CD33 splicing modulator 1 hydrochloride increases exon 2 skipping in cellular mRNA pools. CD33 splicing modulator 1 hydrochloride has the potential for the research of neurodegenerative disease including Alzheimer's disease .
Branaplam (LMI070; NVS-SM1) is a highly potent, selective and orally active survival motor neuron-2 (SMN2)splicing modulator with an EC50 of 20 nM for SMN. Branaplam inhibits human-ether-a-go-go-related gene (hERG) with an IC50 of 6.3 μM. Branaplam elevates full-length SMN protein and extends survival in a severe spinal muscular atrophy (SMA) mouse model .
Branaplam (LMI070; NVS-SM1) hydrochloride is a highly potent, selective and orally active survival motor neuron-2 (SMN2)splicing modulator with an EC50 of 20 nM for SMN. Branaplam hydrochloride inhibits human-ether-a-go-go-related gene (hERG) with an IC50 of 6.3 μM. Branaplam hydrochloride elevates full-length SMN protein and extends survival in a severe spinal muscular atrophy (SMA) mouse model .
REDV is the minimal active sequence within the CS5 site of the alternatively spliced type III connecting segment (IIICS) region of fibronectin. REDV can mediate adhesion to the IIICS region of plasma fibronectin by binding the integrin alpha 4 beta 1(α4β1). REDV can be used for the research of cell adhesion .
RG7800 hydrochloride is an orally active SMN2splicing modulator, with EC1.5xs of 23 nM and 87 nM for SMN2splicing and SMN protein; RG7800 hydrochloride has the potential to treat spinal muscular atrophy.
LSP-GR3 is a novel chemically-modified RNA oligonucleotides, called splice modulating oligomers (SMOs), which potently and specifically modulate GluR alternative splicing to GluR3-flip expression throughout the CNS.
LSP-GR3 sodium is a novel chemically-modified RNA oligonucleotides, called splice modulating oligomers (SMOs), which potently and specifically modulate GluR alternative splicing to GluR3-flip expression throughout the CNS.
REDV TFA is the minimal active sequence within the CS5 site of the alternatively spliced type III connecting segment (IIICS) region of fibronectin. REDV TFA can mediate adhesion to the IIICS region of plasma fibronectin by binding the integrin alpha 4 beta 1(α4β1). REDV TFA can be used for the research of cell adhesion .
PROTAC-O4I2 is a PROTAC targets splicing factor 3B1 (SF3B1). PROTAC-O4I2 induces FLAG-SF3B1 degradation with an IC50 value of 0.244 μM in K562 cells. PROTAC-O4I2 also induces cellular apoptosis in K562 WT cells .
OSMI-2 (Compound 1b) is a cell-permeable O-linked N-acetylglucosamine transferase (OGT) inhibitor. Cells contain a large nuclear pool of partially splicedOGT transcript, and OSMI-2 increases detained intron splicing in cells .
Hinokiflavone is a novel modulator of pre-mRNAsplicing activity in vitro and in cellulo. Hinokiflavone blocks splicing of pre-mRNA substrates by inhibiting spliceosome assembly, specifically preventing B complex formation. Hinokiflavone is a SUMO protease inhibitor, inhibiting sentrin-specific protease 1 (SENP1) activity .
PRMT5-IN-28 (compound 36) is an inhibitor of protein arginine methyltransferase 5 (PRMT5) enzyme. Protein arginine methylation is a common post-translational modification involved in gene transcription, mRNA splicing, DNA repair, protein cellular localization, cell fate determination and signal transduction, etc. Abnormal PRMT5 can promote cancer cell proliferation, resist apoptosis, enhance invasion and metastasis, and affect immune escape .
1-Naphthyl phosphate potassium salt is a non-specific phosphatase inhibitor. 1-Naphthyl phosphate potassium salt decreases the splice-correcting effect .
UNC2383 is an oligonucleotide enhancing compound that can enhance effects of antisense oligonucleotides (ASOs), and splice switching oligonucleotides (SSOs) .
NSC 194308, a U2AF2-RNA complexes enhancer, increases association of the U2AF1-U2AF2-SF1-splice site RNA complex by binding a site between the U2AF2 RNA recognition motifs (RRM1 and RRM2). NSC 194308 inhibits pre-mRNA splicing by stalling spliceosome assembly at the point where U2AF helps recruit U2 snRNP to the branchpoint. NSC 194308 enhances the binding of pre-mRNA to U2AF2, selectively triggering cell death in leukemia cell lines containing spliceosome mutations .
Nusinersen is an antisense oligonucleotide agent that modifies pre–messenger RNA splicing of the SMN2 gene and thus promotes increased production of full-length SMN protein .
Nusinersen sodium is an antisense oligonucleotide agent that modifies pre–messenger RNA splicing of the SMN2 gene and thus promotes increased production of full-length SMN protein .
SMN-C2, an analog of RG-7916, is a selective modulator of SMN2 gene splicing that acts by binding SMN2 pre-mRNA, thereby increasing far upstream element binding protein 1 (FUBP1) and KH-spliced RNA binding Protein affinity regulator protein (KHSRP) to the SMN2 pre-mRNA complex. SMN-C2 can be used in spinal muscular atrophy (SMA) research .
mHTT-IN-2 (compound 27) is a potent inhibitor (EC50=0.066 μM) of mutant huntingtin (mHTT). mHTT-IN-2 reduces canonical splicing of HTT RNA exons [49-50] and is a splicing regulator of the huntingtin (HTT) gene. mHTT-IN-2 exhibits inhibitory activity in vitro and in vivo in human HD stem cells and mouse BACHD models. mHTT-IN-2 may be used in the study of branaplam-related peripheral neuropathy .
HIV-1 inhibitor-6 (compound 9), a diheteroarylamide-based compound, is a potent HIV-1 pre-mRNA alternative splicing inhibitor. HIV-1 inhibitor-6 blocks HIV replication. HIV-1 inhibitor-6 is active against wild-type HIV-1IIIB (subtype B, X4-tropic) and HIV-1 97USSN54 (subtype A, R5-tropic) with EC50s of 0.6 μM and 0.9 μM, respectively. HIV-1 inhibitor-6 inhibits HIV strains resistant to agents targeting HIV reverse transcriptase, protease, integrase, and coreceptor CCR5 with EC50s ranging from 0.9 to 1.5 μM .
Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
Drisapersen, a antisense oligonucleotide, induces exon 51 skipping during dystrophin pre-mRNA splicing and allows synthesis of partially functional dystrophin in Duchenne muscular dystrophy (DMD) patients with amenable mutations.
MKC8866, a salicylaldehyde analog, is a potent, selective IRE1 RNase inhibitor with an IC50 of 0.29 μM in human vitro. MKC8866 strongly inhibits Dithiothreitol-induced X-box-binding protein 1-spliced (XBP1s) expression with an EC50 of 0.52 μM and unstresses RPMI 8226 cells with an IC50 of 0.14 μM . MKC8866 inhibits IRE1 RNase in breast cancer cells leading to the decreased production of pro-tumorigenic factors and it can inhibits prostate cancer (PCa) tumor growth .
Isoginkgetin is a pre-mRNA splicing inhibitor inhibitor. Isoginkgetin also inhibits activities of both Akt, NF-κB and MMP-9. Isoginkgetin inhibits the activity of the 20S proteasome, induces apoptosis and activates autophagy .
Orismilast (LEO-32731) is an orally active and selective PDE4 inhibitor used for the research of inflammatory diseases. Orismilast demonstrates potent inhibition of PDE4B and PDE4D subtype splice variants .
PTC258 is a specific and orally active splicing modulator of Elongator complex protein 1 gene (ELP1). PTC258 increases the expression of ELP1 in vitro and in vivo. PTC258 is well tolerated in mouse model .
Risdiplam-d4 is deuterium labeled Risdiplam. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels[1].
FITC-labeled Drisapersen (sodium) is Drisapersen labeled with FITC. Drisapersen, a antisense oligonucleotide, induces exon 51 skipping during dystrophin pre-mRNA splicing and allows synthesis of partially functional dystrophin in Duchenne muscular dystrophy (DMD) patients with amenable mutations.
m7GpppGpG, an oligonucleotide, is an M 7GpppNpG trinucleotide cap analogue. m7GpppGpG prevents premature degradation by 5′-exonucleases and recruits proteins required for pre-mRNA splicing, mRNA transport and initiation of protein biosynthesis .
Risdiplam-hydroxylate-d3 is a Risdiplam-hydroxylate tritium substitute. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
Risdiplam-hydroxylate-d6 is a Risdiplam-hydroxylate tritium substitute. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
Risdiplam (Standard) is the analytical standard of Risdiplam. This product is intended for research and analytical applications. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
Ailanthone (Δ13-Dehydrochaparrinone) is a potent inhibitor of both full-length androgen receptor (AR) (IC50=69 nM) and constitutively active truncated AR splice variants (AR1-651IC50=309 nM).
PAIR2 is a potent and selective partial antagonist of IRE1α RNase. PAIR2 can completely occupy IRE1α’s ATP-binding site in cells and block the ability of a potent KIRA to inhibit XBP1 splicing .
Homocarbonyltopsentin (PK4C9) is a small-molecule TSL2-binding compound, binds to pentaloop conformations of TSL2 and promotes a shift to triloop conformations that display enhanced SMN2 exon 7 (E7) splicing with EC50 value of 16 μM .
Herboxidiene (GEX1A) is a potent phytotoxic polyketide from Streptomyces sp. A7847 with a diverse range of activities, including herbicidal, anti-cholesterol, anti-tumor effects. Herboxidiene inhibits the pre-mRNA splicing process by binding to spliceosome-associated protein (SAP) 155, a subunit of SF3b, in the splicesome .
EPI-7170, a ralaniten analogue, is a potent androgen receptor N-terminal structural domain antagonist that blocks the transcriptional activity of full-length AR (FL-AR) and AR splice variants (AR-Vs). EPI-7170 has antitumor effects against enzalutamide resistant castration-resistant prostate cancer (CRPC) .
1,2-Dihydrotanshinone (1,2-Dihydrotanshinquinone) is an abietane diterpene. 1,2-Dihydrotanshinone inhibits the formation of the pathogenic complex formed between (CUG)n-RNA and the splicing-factor muscleblind-like 1 (MBNL1). 1,2-Dihydrotanshinone can be used for the research of myotonic dystrophy type 1 .
ZNL-05-044 is a CDK11 inhibitor with an IC50s of 0.23 μM and 0.27 μM against CDK11A and CDK11B, respectively (NanoBRET assay). ZNL-05-044 leads to G2/M cell cycle arrest and impairs RNA splicing .
(E/Z)-TG003 is a racemic compound of (Z)-TG003 and (E)-TG003. (Z)-TG003 is a potent inhibitor of Clk1/Sty; inhibits Clk1 and Clk4 with IC50 values of 20 and 15 nM, respectively .
SPHINX31 is a potent and selective SRPK1 inhibitor, with an IC50 of 5.9 nM. SPHINX31 inhibits phosphorylation of serine/arginine-rich splicing factor 1 (SRSF1). SPHINX31 also decreases the mRNA expression of pro-angiogenic VEGF-A165a isoform. SPHINX31 can be used to research neovascular eye disease .
Ar-V7-IN-1 is a potent inhibitor of Ar-V7. AR-V7 is a hormone-independent splice variant of the androgen receptor. Ar-V7-IN-1 has the potential for the research of various indications, in particular cancers such as prostate cancer (extracted from patent WO2018114781A1, compound 43) .
HTT-D3 is a potent and orally active huntingtin (HTT)splicing modulator. HTT-D3 acts by promoting the inclusion of a pseudoexon containing a premature termination codon (stop-codon psiExon), leading to HTT mRNA degradation and reduction of HTT levels. HTT-D3 reduces p-glycoprotein (P-gp) efflux, and can be uesd for Huntington's disease research .
Thailanstatin A is an ultra-potent inhibitor of eukaryotic RNA splicing (IC50=650 nM). Thailanstatin A exerts effects via non-covalent binding to the SF3b subunit of the U2 snRNA subcomplex of the spliceosome and shows low-nM to sub-nM IC50s against multiple cancer cell lines. Thailanstatin A, a payload for ADCs, is conjugated to the lysines on trastuzumab yielding “linker-less” ADC .
Indisulam (E 7070) is a carbonic anhydrase inhibitor with anticancer activity. Indisulam (E 7070) is a sulfonamide agent that targets the G1 phase of the cell cycle. Indisulam (E 7070) causes a blockade in the G1/S transition through inhibition of the activation of both CDK2 and cyclin E. Indisulam (E 7070) targets splicing by inducing RBM39 degradation via recruitment to DCAF15 .
H3B-8800 is a potent and orally active SF3B splicing modulator. H3B-8800 direct interaction with the SF3b complex and shows anti-cancer activity. H3B-8800 has the potential for the research of acute myeloid leukemia (AML) with SF3B1 mutant .
UNC10217938A is a 3-deazapteridine analog with strong oligonucleotide enhancing effects. UNC10217938A enhances oligonucleotides effects by modulating their intracellular trafficking and release from endosomes. UNC10217938A also enhances the effects of antisense and siRNA oligonucleotides .
CFT1946 is an orally active, CRBN-based and mutant-selective bifunctional degradation activating compound (BiDAC ™) degrader of BRAF V600E with a DC50 of 14 nM in A375 cells. CFT1946 is capable of degrading BRAF V600E (Class I), G469A (Class II), G466V (Class III) mutations, and the p61-BRAF V600Esplice variant. CFT1946 can be used in tumor research .
Vercirnon (GSK1605786A) is an orally bioavailable, selective, and potent antagonist of CCR9. Vercirnon inhibits CCR9-mediated Ca 2+ mobilization and chemotaxis on Molt-4 cells with IC50 values of 5.4 and 3.4 nM, respectively. Vercirnon is selective for CCR9 over CCR1-12 and CX3CR1-7 (IC50s>10 µM for all). Vercirnon is an equipotent inhibitor of CCL25-directed chemotaxis of both splice forms of CCR9 (CCR9A and CCR9B) with IC50 values of 2.8 and 2.6 nM, respectively .
Vercirnon (GSK1605786A) sodium is an orally bioavailable, selective, and potent antagonist of CCR9. Vercirnon sodium inhibits CCR9-mediated Ca 2+ mobilization and chemotaxis on Molt-4 cells with IC50 values of 5.4 and 3.4 nM, respectively. Vercirnon sodium is selective for CCR9 over CCR1-12 and CX3CR1-7 (IC50s>10 µM for all). Vercirnon sodium is an equipotent inhibitor of CCL25-directed chemotaxis of both splice forms of CCR9 (CCR9A and CCR9B) with IC50 values of 2.8 and 2.6 nM, respectively .
PTBP1-RNA-binding inhibitor P6 (PTBP1 α3-helix derived peptide P6) TFA is a stapled peptide inhibitor of the splicing factor PTBP1, which inhibits alternative splicing events regulated by PTBP1. PTBP1 binds RNA through its RNA recognition motif .
REDV TFA is the minimal active sequence within the CS5 site of the alternatively spliced type III connecting segment (IIICS) region of fibronectin. REDV TFA can mediate adhesion to the IIICS region of plasma fibronectin by binding the integrin alpha 4 beta 1(α4β1). REDV TFA can be used for the research of cell adhesion .
REDV is the minimal active sequence within the CS5 site of the alternatively spliced type III connecting segment (IIICS) region of fibronectin. REDV can mediate adhesion to the IIICS region of plasma fibronectin by binding the integrin alpha 4 beta 1(α4β1). REDV can be used for the research of cell adhesion .
Hinokiflavone is a novel modulator of pre-mRNAsplicing activity in vitro and in cellulo. Hinokiflavone blocks splicing of pre-mRNA substrates by inhibiting spliceosome assembly, specifically preventing B complex formation. Hinokiflavone is a SUMO protease inhibitor, inhibiting sentrin-specific protease 1 (SENP1) activity .
Isoginkgetin is a pre-mRNA splicing inhibitor inhibitor. Isoginkgetin also inhibits activities of both Akt, NF-κB and MMP-9. Isoginkgetin inhibits the activity of the 20S proteasome, induces apoptosis and activates autophagy .
Ailanthone (Δ13-Dehydrochaparrinone) is a potent inhibitor of both full-length androgen receptor (AR) (IC50=69 nM) and constitutively active truncated AR splice variants (AR1-651IC50=309 nM).
Thailanstatin D, an analogue of Thailanstatin A, is able to inhibit AR-V7 gene splicing by interfering the interaction between U2AF65 and SAP155 and preventing them from binding to polypyrimidine tract located between the branch point and the 3' splice site. Thailanstatin D exhibits a potent tumor inhibitory effect on human CRPC xenografts leading to cell apoptosis .
Herboxidiene (GEX1A) is a potent phytotoxic polyketide from Streptomyces sp. A7847 with a diverse range of activities, including herbicidal, anti-cholesterol, anti-tumor effects. Herboxidiene inhibits the pre-mRNA splicing process by binding to spliceosome-associated protein (SAP) 155, a subunit of SF3b, in the splicesome .
1,2-Dihydrotanshinone (1,2-Dihydrotanshinquinone) is an abietane diterpene. 1,2-Dihydrotanshinone inhibits the formation of the pathogenic complex formed between (CUG)n-RNA and the splicing-factor muscleblind-like 1 (MBNL1). 1,2-Dihydrotanshinone can be used for the research of myotonic dystrophy type 1 .
DBI Protein, with high affinity, binds medium- and long-chain acyl-CoA esters, potentially acting as an intracellular carrier. Moreover, DBI displaces diazepam from the benzodiazepine (BZD) recognition site on the GABA type A receptor, suggesting a neuropeptide role in modulating GABA receptor action. Structurally, as a monomer, DBI underscores the importance of its individual unit in diverse molecular interactions within cellular pathways. DBI Protein, Mouse (P. pastoris, His) is the recombinant mouse-derived DBI protein, expressed by P. pastoris, with N-6*His labeled tag. The total length of DBI Protein, Mouse (P. pastoris, His) is 86 a.a., with molecular weight of 11.9 kDa.
Risdiplam-d4 is deuterium labeled Risdiplam. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels[1].
Risdiplam-hydroxylate-d3 is a Risdiplam-hydroxylate tritium substitute. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
Risdiplam-hydroxylate-d6 is a Risdiplam-hydroxylate tritium substitute. Risdiplam (RG7916) is an orally administered, centrally and peripherally distributed SMN2 pre-mRNA splicing modifier that increases survival motor neuron (SMN) protein levels .
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