Subasumstat
(Synonyms: TAK-981) 目录号 : GC64972An inhibitor of SUMO-activating enzyme
Cas No.:1858276-04-6
Sample solution is provided at 25 µL, 10mM.
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TAK-981 is an inhibitor of SUMO-activating enzyme (SAE; IC50 = <10 nM).1 It increases macrophage phagocytosis and natural killer (NK) cell-mediated cytotoxicity of cancer cells in vitro.2 TAK-981 upregulates the expression of IFN-regulated genes in the blood and tumor tissue in an A20 syngeneic lymphoma mouse model.3 It also decreases intratumor levels of SUMOlyated proteins and reduces tumor growth in the same model.
1.Duffey, M.O., England, D., Freeze, S., et al.Heteroaryl compounds useful as inhibitors of sumo activating enzymeWO2016/004136 Al(2016) 2.Nakamura, A., Grossman, S., Song, K., et al.Abstract 1523: Inhibition of SUMOylation by TAK-981 induces antitumor innate immune responses by modulating macrophage and NK cell function through Type I IFN pathway activationCancer Res.79(13)1523(2019) 3.Berger, A.J., Friedlander, S., Ghasemi, O., et al.Abstract 3079: Pharmacodynamic evaluation of the novel SUMOylation inhibitor TAK-981 in a mouse tumor modelCancer Res.79(13)3079(2019)
Cas No. | 1858276-04-6 | SDF | Download SDF |
别名 | TAK-981 | ||
分子式 | C25H28ClN5O5S2 | 分子量 | 578.1 |
溶解度 | DMSO : 16.67 mg/mL (28.84 mM; ultrasonic and warming and heat to 80°C) | 储存条件 | Store at -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 1.7298 mL | 8.649 mL | 17.298 mL |
5 mM | 0.346 mL | 1.7298 mL | 3.4596 mL |
10 mM | 0.173 mL | 0.8649 mL | 1.7298 mL |
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The SUMOylation inhibitor Subasumstat potentiates rituximab activity by IFN1-dependent macrophage and NK cell stimulation
Blood 2022 May 5;139(18):2770-2781.PMID:35226739DOI:10.1182/blood.2021014267.
Small ubiquitin-like modifier (SUMO) is a member of a ubiquitin-like protein superfamily. SUMOylation is a reversible posttranslational modification that has been implicated in the regulation of various cellular processes including inflammatory responses and expression of type 1 interferons (IFN1). In this report, we have explored the activity of the selective small molecule SUMOylation inhibitor Subasumstat (TAK-981) in promoting antitumor innate immune responses. We demonstrate that treatment with TAK-981 results in IFN1-dependent macrophage and natural killer (NK) cell activation, promoting macrophage phagocytosis and NK cell cytotoxicity in ex vivo assays. Furthermore, pretreatment with TAK-981 enhanced macrophage phagocytosis or NK cell cytotoxicity against CD20+ target cells in combination with the anti-CD20 antibody rituximab. In vivo studies demonstrated enhanced antitumor activity of TAK-981 and rituximab in CD20+ lymphoma xenograft models. Combination of TAK-981 with anti-CD38 antibody daratumumab also resulted in enhanced antitumor activity. TAK-981 is currently being studied in phase 1 clinical trials (#NCT03648372, #NCT04074330, #NCT04776018, and #NCT04381650; www.clinicaltrials.gov) for the treatment of patients with lymphomas and solid tumors.
SUMOylation inhibition overcomes proteasome inhibitor resistance in multiple myeloma
Blood Adv 2023 Feb 28;7(4):469-481.PMID:35917568DOI:10.1182/bloodadvances.2022007875.
Proteasome inhibition is a highly effective treatment for multiple myeloma (MM). However, virtually all patients develop proteasome inhibitor resistance, which is associated with a poor prognosis. Hyperactive small ubiquitin-like modifier (SUMO) signaling is involved in both cancer pathogenesis and cancer progression. A state of increased SUMOylation has been associated with aggressive cancer biology. We found that relapsed/refractory MM is characterized by a SUMO-high state, and high expression of the SUMO E1-activating enzyme (SAE1/UBA2) is associated with poor overall survival. Consistently, continuous treatment of MM cell lines with carfilzomib (CFZ) enhanced SUMO pathway activity. Treatment of MM cell lines with the SUMO E1-activating enzyme inhibitor Subasumstat (TAK-981) showed synergy with CFZ in both CFZ-sensitive and CFZ-resistant MM cell lines, irrespective of the TP53 state. Combination therapy was effective in primary MM cells and in 2 murine MM xenograft models. Mechanistically, combination treatment with Subasumstat and CFZ enhanced genotoxic and proteotoxic stress, and induced apoptosis was associated with activity of the prolyl isomerase PIN1. In summary, our findings reveal activated SUMOylation as a therapeutic target in MM and point to combined SUMO/proteasome inhibition as a novel and potent strategy for the treatment of proteasome inhibitor-resistant MM.
Protection of Regulatory T Cells from Fragility and Inactivation in the Tumor Microenvironment
Cancer Immunol Res 2022 Dec 2;10(12):1490-1505.PMID:PMC9722544DOI:10.1158/2326-6066.CIR-22-0295.
Fragility of regulatory T (Treg) cells manifested by the loss of neuropilin-1 (NRP1) and expression of IFNγ undermines the immune suppressive functions of Treg cells and contributes to the success of immune therapies against cancers. Intratumoral Treg cells somehow avoid fragility; however, the mechanisms by which Treg cells are protected from fragility in the tumor microenvironment are not well understood. Here, we demonstrate that the IFNAR1 chain of the type I IFN (IFN1) receptor was downregulated on intratumoral Treg cells. Downregulation of IFNAR1 mediated by p38α kinase protected Treg cells from fragility and maintained NRP1 levels, which were decreased in response to IFN1. Genetic or pharmacologic inactivation of p38α and stabilization of IFNAR1 in Treg cells induced fragility and inhibited their immune suppressive and protumorigenic activities. The inhibitor of sumoylation TAK981 (Subasumstat) upregulated IFNAR1, eliciting Treg fragility and inhibiting tumor growth in an IFNAR1-dependent manner. These findings describe a mechanism by which intratumoral Treg cells retain immunosuppressive activities and suggest therapeutic approaches for inducing Treg fragility and increasing the efficacy of immunotherapies.
A sumoylation program is essential for maintaining the mitotic fidelity in proliferating mantle cell lymphoma cells
Exp Hematol Oncol 2022 Jul 13;11(1):40.PMID:35831896DOI:10.1186/s40164-022-00293-y.
Background: Mantle cell lymphoma (MCL) is a rare, highly heterogeneous type of B-cell non-Hodgkin's lymphoma. The sumoylation pathway is known to be upregulated in many cancers including lymphoid malignancies. However, little is known about its oncogenic role in MCL. Methods: Levels of sumoylation enzymes and sumoylated proteins were quantified in MCL cell lines and primary MCL patient samples by scRNA sequencing and immunoblotting. The sumoylation enzyme SAE2 was genetically and pharmacologically targeted with shRNA and TAK-981 (Subasumstat). The effects of SAE2 inhibition on MCL proliferation and cell cycle were evaluated using confocal microscopy, live-cell microscopy, and flow cytometry. Immunoprecipitation and orbitrap mass spectrometry were used to identify proteins targeted by sumoylation in MCL cells. Results: MCL cells have significant upregulation of the sumoylation pathway at the level of the enzymes SAE1 and SAE2 which correlated with poor prognosis and induction of mitosis associated genes. Selective inhibition of SAE2 with TAK-981 results in significant MCL cell death in vitro and in vivo with mitotic dysregulation being an important mechanism of action. We uncovered a sumoylation program in mitotic MCL cells comprised of multiple pathways which could be directly targeted with TAK-981. Centromeric localization of topoisomerase 2A, a gene highly upregulated in SAE1 and SAE2 overexpressing MCL cells, was lost with TAK-981 treatment likely contributing to the mitotic dysregulation seen in MCL cells. Conclusions: This study not only validates SAE2 as a therapeutic target in MCL but also opens the door to further mechanistic work to uncover how to best use desumoylation therapy to treat MCL and other lymphoid malignancies.