proteasome-in-1

Proteasome-IN-1 is an inhibitor of proteasome.

HM90822 是一种新型合成凋亡蛋白（IAP）拮抗剂，通过蛋白酶体依赖性降解含有BIR2 3结构域的IAPs诱导人胰腺癌细胞凋亡。HM90822 抑制对 HM822 敏感的 Panc-1 和 BxPC-3 细胞中 XIAP 和 cIAP1 2 蛋白的表达，诱导 IAP 泛素化并促进蛋白酶体依赖性 IAP 降解。

LMTK3-IN-1 是一种有效的 ATP 竞争性狐猴酪氨酸激酶 3 (LMTK3) (Kd=2.5 μM) 抑制剂，通过泛素蛋白酶体途径降解 LMTK3 发挥特性。LMTK3-IN-1 在多种癌细胞系和体内 BC 小鼠模型中展现出抗癌活性。 LMTK3-IN-1（10-20 μM） 可诱导 BC 细胞系凋亡。

S119-8 是一种广谱甲型和乙型流感病毒抑制剂，抑制多种乙型流感病毒和耐奥司他韦的甲型流感病毒。

Radicicol(Monorden，根赤壳菌素)是一种抗真菌抗生素，也是热休克蛋白90（Hsp90）的强效抑制剂（IC50 = 1 μM），通过结合Hsp90的ATP结合口袋，导致Hsp90被蛋白酶体降解。此外，Radicicol还抑制多种肿瘤细胞系的生长和增殖。它还具有抗疟疾活性，并可作为脂肪和肥胖相关蛋白（FTO）的抑制剂。Radicicol通过阻断p38激酶信号通路和NF-κB Rel抑制iNOS基因表达

Rpn11-IN-1 is an effective and selective inhibitor of proteasome subunit Rpn11 (IC50: 390 nM).

Boc-C1-PEG3-C4-OBn (PROTAC Linker 15) is a PEG-based PROTAC linker employed in the synthesis of various PROTACs, including PROTAC SGK3 degrader-1. PROTACs are composed of two distinct ligands connected by a linker; one ligand binds to an E3 ubiquitin ligase, while the other specifically interacts with the target protein. By leveraging the intracellular ubiquitin-proteasome system, PROTACs can selectively degrade target proteins[1].

Boc-C1-PEG3-C4-OH is an Alkyl ether-based PROTAC linker utilized in the synthesis of PROTACs, which are characterized by their structure comprising two distinct ligands tethered by a linker. One ligand of PROTACs binds to an E3 ubiquitin ligase, while the other binds to the target protein. By leveraging the intracellular ubiquitin-proteasome system, PROTACs facilitate the targeted degradation of specific proteins[1].

Phthalimide-PEG3-C2-OTs (Compound 5) is a PROTAC linker composed of PEGs. It is utilized in the synthesis of various PROTACs, which involve the connection of two distinct ligands through a linker. One ligand is specific for an E3 ubiquitin ligase, while the other ligand is designed for targeting the specific protein of interest. Through leveraging the intracellular ubiquitin-proteasome system, PROTACs are capable of selectively degrading target proteins [1].

Phthalimide-PEG4-MPDM-OH, a PROTAC linker with a PEGs composition, has applications in the synthesis of various PROTACs. These PROTACs consist of a linker connecting two distinct ligands: one binds to an E3 ubiquitin ligase, while the other binds to the target protein. By leveraging the intracellular ubiquitin-proteasome system, PROTACs selectively induce the degradation of target proteins [1].

Phthalimide-PEG4-PDM-OTBS is a PROTAC linker comprised of polyethylene glycols (PEGs). This compound is utilized in the synthesis of a range of PROTACs, which consists of two distinct ligands connected by a linker. One ligand binds to an E3 ubiquitin ligase, while the other ligand binds to the target protein. By leveraging the intracellular ubiquitin-proteasome system, PROTACs selectively degrade target proteins[1].

(±)15-HETE is an alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[1].

PROTAC 20S proteasomesubunit β5 degrader 1 (compound 12f)，一种针对20S蛋白酶体亚基β5的靶向降解剂，在FaDu细胞中表现出0.11 μM的DC50值。此化合物能在FaDu和KM3 BTZ细胞中干扰细胞周期，促进细胞凋亡(apoptosis)，并有效抑制细胞的增殖与迁移。此外，PROTAC 20S proteasomesubunit β5 degrader 1 还可用于研究咽癌和多发性骨髓瘤中对Bortezomib的耐药性。

PROTAC TRIB2 degrader-1 (Compound 5k) 作为一种选择性TRIB2降解剂，通过CRBN依赖的泛素-蛋白酶体途径有效诱导TRIB2的降解。此化合物能够抑制细胞增殖并诱导细胞凋亡(apoptosis)，有望在癌症研究中发挥重要作用。

TrxR EGFR-IN-1 (Compound L1Au2) 是一款TrxR EGFR的抑制剂，针对吉非替尼敏感及耐药的肺癌均展示出活性，有效抑制肿瘤增殖并诱导细胞凋亡 (apoptosis)。该化合物通过自噬溶酶体和蛋白酶体途径加速GPX4蛋白的降解，从而引发铁死亡 (ferroptosis)。此外，TrxR EGFR-IN-1 还可以诱发内质网应激并引发免疫原性细胞死亡，因此适用于吉非替尼耐药肺癌的研究。

Steviol (NSC-226902) 是一种甜菊糖甙的主要代谢物。它能降低 AQP2 的表达，并促进 AQP2 的降解，从而减缓肾囊肿的生长。

Potent and selective BTK Degrader (IC50 = 5.1 nM); degrades BTK in a proteasome- and CRBN-dependent manner. Suppresses BTK signaling and proliferation in mantle cell lymphoma (MCL) cells by degrading BTK, IKFZ1, and IKFZ3 (3 validated targets in B-cell malignancies). Also degrades Ibrutinib (Cat. No. 6813) -resistant C481S-BTK mutant cancer cells. Exhibits no binding against a panel of 468 kinases at 1 μM. Reduces tumor burden and extends survival in lymphoma patient-derived xenograft models.

C6 urea ceramide is an inhibitor of neutral ceramidase.1 It increases total ceramide levels in wild-type mouse embryonic fibroblasts (MEFs) and in HT-29 colon cancer cells but not in MEFs lacking neutral ceramidase. It inhibits proliferation of, and induces apoptosis and autophagy in HT-29, but not non-cancerous RIE-1, cells when used at concentrations of 5 and 10 μM. C6 urea ceramide decreases total β-catenin, increases phosphorylated β-catenin, and induces colocalization of β-catenin with the 20S proteasome in HT-29 and HCT116, but not RIE-1, cells. It reduces tumor growth and increases C16, C18, C20, and C24 ceramide levels in tumor tissue in an HT-29 mouse xenograft model when administered at doses of 1.25, 2.5, and 5 mg/kg for five days. |1. García-Barros, M., Coant, N., Kawamori, T., et al. Role of neutral ceramidase in colon cancer. FASEB J. 30(12), 4159-4171 (2016).

PROTAC IDO1 Degrader-1 is the first potent IDO1 (indoleamine 2,3-dioxygenase 1) degrader that hijacks IDO1 to CRBN E3 ligase to introduce IDO1 into UPS and eventually achieve ubiquitination and degradation (DC50=2.84 μM). PROTAC IDO1 Degrader-1 moderately improves the tumor-killing activity of H ER2 CAR-T cells[1]. PROTAC IDO1 Degrader-1 (compound 2c) (10 μM; 24 hours) notably decreases IDO1 level induced by IFN-γ[1].PROTAC IDO1 Degrader-1 and IFN-γ (5 ng mL) are incubated with HeLa cells for 24 h, and a significant dose-dependent degradation is observed. PROTAC IDO1 Degrader-1 combined with chimeric antigen receptor-modified T (CAR-T) cells can improve the tumor-killing activity of HER-2 CAR-T cells[1].PROTAC IDO1 Degrader-1 induces significant and persistent degradation of IDO1 with maximum degradation (dmax) of 93% in HeLa cells[1]. [1]. Hu M, et al. Discovery of the first potent proteolysis targeting chimera (PROTAC) degrader of indoleamine 2,3-dioxygenase 1. Acta Pharm Sin B. 2020;10(10):1943-1953.

KZR-616, a first-in-class inhibitor of the immunoproteasome, selectively targets the LMP7 (IC50: 39/57 nM=hLMP7/mLMP7) and LMP2 (IC50: 131/179 nM=hLMP7/mLMP7) subunits of the immunoproteasome. KZR-616 has the potential for the research of multiple autoimmune diseases[1][2]. KZR-616 also inhibits MECL-1 subunit (IC50=623 nM) and constitutive proteasome β5 subunit (IC50=688 nM). KZR-616 maintains LMP7 and LMP2 selective inhibition in MOLT-4 cells. KZR-616 (250 nM) shows a comparable cytokine inhibition profile peripheral blood mononuclear cells (PBMC)[1].KZR-616 is an immunoproteasome-selective inhibitor identified based on the optimization of ONX-0914 and PR-924 [3]. KZR-616 (5 mg/kg; i.v.; dosing was repeated on days 6, 8, 11, and 13) shows efficacy in the anticollagen antibody induced arthritis (CAIA) model[1]. [1]. Johnson HWB, et al. Required Immunoproteasome Subunit Inhibition Profile for Anti-Inflammatory Efficacy and Clinical Candidate KZR-616 ((2 S,3 R)- N-(( S)-3-(Cyclopent-1-en-1-yl)-1-(( R)-2-methyloxiran-2-yl)-1-oxopropan-2-yl)-3-hydroxy-3-(4-methoxyphenyl)-2-(( S)-2-(2-morpholinoacetamido)propanamido)propenamide). J Med Chem. 2018 Dec 27;61(24):11127-11143. [2]. Muchamuel T, et al. FRI0296 Kzr-616, a selective inhibitor of the immunoproteasome, blocks the disease progression in multiple models of systemic lupus erythematosus (SLE). Annals of the Rheumatic Diseases 2018;77:685. [3]. Xi J, et al. Immunoproteasome-selective inhibitors: An overview of recent developments as potential drugs for hematologic malignancies and autoimmune diseases. Eur J Med Chem. 2019;182:111646.

VCP p97 inhibitor-1, a highly effective compound, inhibits VCP p97 (also known as Cdc48, CDC-48, or Ter94) with an IC 50 of 54.7 nM. This inhibitor induces a disruption in protein homeostasis and interferes with the degradation process of misfolded polypeptides by the ubiquitin-proteasome system (UPS).

20S Proteasome-IN-4 (Compound 7) 是一种能透过血脑屏障的、寄生虫选择性的、具有口服活性的20Sproteasome 抑制剂，对T. b. brucei20S 蛋白酶体的IC50为 6.3 nM。20S Proteasome-IN-4 可用于非洲人类锥虫病的研究。

20S Proteasome activator 1 是一种 20S 蛋白酶激活剂，对胰蛋白酶样位点、胰凝乳蛋白酶样位点和半胱天冬酶位点的 IC50 分别为 0.3 μM、0.7 μM 和 1.8 μM。20S Proteasome activator 1 通过在细胞系统中翻译来防止致病性 α-synuclein A53T 突变体积累从而减少疾病发生的概率。20S Proteasome activator 1 可用于研究神经退行性疾病。

TP-110 is a new proteasome inhibitor, which shows potent growth inhibition in various tumor cell lines. Treatment with TP-110 for 24 h in vitro induced apoptosis in multiple myeloma cell line RPMI8226. TP-110 reduced the intrinsic inhibitor of apoptosis proteins (IAPs), cIAP-1 and XIAP, that suppress executioner caspases.