cereblon inhibitor 1

Cereblon inhibitor 1 (isoindoline) serves as a modulator of the cereblon E3 ubiquitin ligase and shows promise for applications in cancer research.

dCBP-1 is a chemical degrader of p300 CBP. dCBP-1 hijacks the E3 ubiquitin ligase CRBN for selective degradation of p300 CBP. Degradation of p300 CBP by dCBP-1 leads to effective multiple myeloma cell killing.

Dicyclanil is an insect growth regulator with a chemical structure similar to that of cyclopromazine.

PROTAC Mcl1 degrader-1 is a Cereblon ligand-based targeted chimeric protein degrader (PROTAC), a selective Mcl-1 inhibitor. By hijacking the CRBN ubiquitin ligase to form a ternary complex with the target protein, it induces Mcl-1 ubiquitination. It can be used for cancer research.

Homo-PROTAC cereblon degrader 1 is a highly potent and efficient cereblon (CRBN) degrader with only minimal effects on IKZF1 and IKZF3.

PROTAC Sirt2 Degrader-1 is a SirReal-based PROTAC that acts as a Sirt2 degrader, composed of a highly potent and isotype-selective Sirt2 inhibitor, a linker, and a bona fide cereblon ligand for E3 ubiquitin ligase. PROTAC Sirt2 Degrader-1 shows an IC50 of 0.25 μM for Sirt2, with no effect on Sirt1 Sirt3 (IC50s > 100 μM)[1].

Pomalidomide-PEG4-C-COOH (E3 Ligase Ligand-Linker Conjugates 1) is a synthesized E3 ligase ligand-linker conjugate that combines the Pomalidomide-based cereblon ligand and 4-unit PEG linker used in PROTAC technology.

PROTAC BRD2 BRD4 degrader-1 (compound 15) is a potent, selective degrader of BET proteins BRD4 and BRD2, achieving rapid, reversible, and unexpectedly selective elimination compared to BRD3. It effectively suppresses solid tumors with minimal cytotoxic effects and comprises a BET inhibitor, a connecting linker, and thalidomide as the ligand for cereblon (CRBN) cullin 4A[1].

Desmethyl-QCA276, the QCA276-based moiety, binds to cereblon ligand via a linker to form PROTAC to degrade BET. QCA276 is a BET inhibitor with an IC50 of 10 nM, and with a Ki of 2.3 nM[1].

SirReal1-O-propargyl, a moiety based on SirReal1, is a selective and highly potent inhibitor of Sirtuin 2 (Sirt2), demonstrating an IC50 of 2.4 μM. It operates by binding to the cereblon ligand through a linker, facilitating the formation of PROTAC for the degradation of Sirt2[1].

JQ dS-4 is a degrader of Brahma-related gene 1 (BRG1) BRM SMARCA4 (PROTAC®; DC50 range = 9 - 390 nM in glioma models and cell lines), featuring a BRG1 inhibitor connected through a linker to a cereblon (CRBN) E3 ligase ligand. It effectively degrades BRG1 completely over 48 and 72 hours in HSJD-DIPG007 and SU-DIPGXIIIP cells. Additionally, it lessens the viability of various cancer cell lines, including those of H3K27M glioma, prostate, thyroid, and salivary gland.

PROTAC RIPK degrader-6 (example 1) is a PROTAC engineered for RIP Kinase degradation, comprising a RIP2 kinase inhibitor linked to a cereblon binder[1].

Abemaciclib metabolite M18 (LSN3106729) is a potent cyclin-dependent kinase (CDK) inhibitor with antitumor properties. It has been incorporated alongside a cereblon (CRBN) ligand to develop a proteolysis-targeting chimera (PROTAC) that selectively degrades CDK4 6 [1] [2].

JET-209 is a potent proteolysis-targeting chimera (PROTAC) that effectively degrades CBP p300, exhibiting half-maximal degradation concentration (DC50) values of 0.05 nM for CBP and 0.2 nM for p300. The compound comprises lenalidomide (the cereblon ligand), a connecting linker, and GNE-207 (the bromodomain inhibitor). JET-209 is utilized in cancer research [1].

Soluble epoxide hydrolase (sEH) PROTAC 1a is a proteolysis-targeting chimera (PROTAC) comprising a cereblon ligand linked to the sEH inhibitor t-TUCB via a linker, promoting selective sEH degradation and inhibiting its hydrolase activity (IC50 = 0.8 nM) significantly more than its phosphatase activity (IC50 = >10,000 nM). This compound preferentially targets cytosolic sEH for lysosomal rather than proteasomal degradation. Furthermore, it mitigates thapsigargin-induced upregulation of phosphorylated inositol-requiring enzyme 1α (IRE1α) and X-box binding protein 1 (XBP1) splicing in HepG2 and 293T cells, thereby reducing endoplasmic reticulum stress.

C-02, a proteolysis-targeting chimera (PROTAC) that combines the hexokinase inhibitor lonidamine with the cereblon ligand thalidomide, effectively induces the degradation of hexokinase 2 in 786-O and PANC-1 cells at a concentration of 20 µM. This compound exhibits cytotoxicity to a range of cancer cells, including 786-O, 4T1, PANC-1, HGC-27, and MCF-7, with IC50 values of 34.07 µM, 5.08 µM, 31.53 µM, 6.11 µM, and 21.65 µM, respectively. Additionally, at 20 µM, C-02 diminishes both the extracellular acidification rate (ECAR) and oxygen consumption rate (OCR) in 4T1 cells, suggesting a suppression of glycolysis and mitochondrial damage. In vivo studies reveal that at a dosage of 50 mg/kg, C-02 not only reduces tumor volume but also promotes intratumoral cytokine accumulation and triggers pyroptosis in a 4T1 murine mammary carcinoma model.

Thalidomide-Piperazine 5-fluoride hydrochloride, a derivative of the cereblon (CRBN) inhibitor Thalidomide, serves as a ligand for E3 ubiquitin ligase (Ligands for E3 Ligase), facilitating the synthesis of PROTACs [1].

PROTAC KRAS G12C degrader-2 (compound 432) acts as a bifunctional modulator, enhancing the hydrolysis of K-Ras protein. One end of this compound features a cereblon inhibitor of apoptosis proteins (IAP), while the other end contains a moiety that binds to KRAS [1].