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PROTAC degraders recruit an E3 ubiquitin ligase to a target protein so that the proteasome degrades it. Each proteolysis-targeting chimera (PROTAC) links a target-binding ligand to an E3 ligase ligand through a chemical linker. The approach was first described in 2001, and later work showed that small-molecule PROTACs can act catalytically, removing several target copies per molecule. Examples include the bromodomain and extra-terminal (BET) degraders dBET1, MZ1 and ARV-771, and the estrogen receptor degrader ERD-308. Degraders of anti-apoptotic proteins, such as PROTAC Mcl1 degrader-1, are also listed.
FC-11 is a highly potent PROTAC degrader targeting focal adhesion kinase (FAK), with a DC₉₀ of 1 nM. It offers a powerful tool for investigating FAK-mediated signaling pathways and holds potential for cancer research and therapeutic development.
BSJ-03-204 is a potent and selective PROTAC degrader targeting CDK4 and CDK6, constructed by linking Palbociclib to a cereblon ligand. It exhibits IC₅₀ values of 26.9 nM for CDK4/D1 and 10.4 nM for CDK6/D1, without inducing degradation of IKZF1 or IKZF3. BSJ-03-204 demonstrates strong anti-cancer activity and is a valuable tool for cell cycle and oncology research.
BSJ-04-132 is a potent and selective Ribociclib-based PROTAC degrader targeting CDK4, constructed using ligands for cereblon and CDK. It exhibits IC₅₀ values of 50.6 nM for CDK4/D1 and 30 nM for CDK6/D1, while sparing CDK6 and IKZF1/3 from degradation. BSJ-04-132 demonstrates anti-cancer activity and is a valuable tool for cell cycle and oncology research.
HaloPROTAC-E is a potent and selective PROTAC designed to degrade Halo-tagged endoplasmic reticulum-localized proteins, including SGK3 and VPS34, with a DC₅₀ of 3–10 nM. It effectively induces degradation of endogenous VPS34 complexes (VPS34, VPS15, Beclin1, and ATG14) when Halo-tagged, leading to inhibition of autophagy. HaloPROTAC-E is a valuable tool for conditional protein degradation and autophagy research.
ACBI1 is a potent and cooperative PROTAC degrader targeting SMARCA2, SMARCA4, and PBRM1, with DC₅₀ values of 6 nM, 11 nM, and 32 nM, respectively. It exhibits strong anti-proliferative activity and induces apoptosis, making it a valuable tool for studying chromatin remodeling and cancer therapeutics.
PROTAC K-Ras Degrader-1 (Compound 518) is a cereblon-based PROTAC that selectively degrades K-Ras, achieving ≥70% degradation efficiency in SW1573 cells. It serves as a valuable tool for studying K-Ras-driven signaling pathways and potential therapeutic strategies in cancer research.
AU-15330 is a PROTAC degrader targeting the SWI/SNF chromatin remodeling ATPase subunits SMARCA2 and SMARCA4. It effectively suppresses tumor growth in prostate cancer xenograft models and enhances the therapeutic efficacy of the AR antagonist enzalutamide. AU-15330 also induces remission in castration-resistant prostate cancer models, demonstrating strong antitumor activity with a favorable safety profile.
Synonyms: SGK3-PROTAC1
SGK3-PROTAC1 is a PROTAC molecule designed to selectively degrade SGK3 by linking the 308-R SGK inhibitor to the VHL-binding ligand VH032. Through recruitment of the VHL E3 ligase, SGK3-PROTAC1 induces proteasomal degradation of SGK3, providing a targeted approach for studying SGK3 function in cellular signaling and disease.
MS67 is a highly potent and selective PROTAC degrader of WD40 repeat domain protein 5 (WDR5), exhibiting minimal activity against other protein methyltransferases, kinases, GPCRs, ion channels, and transporters. Its strong anticancer activity highlights its utility as a targeted tool for studying WDR5-related epigenetic regulation and cancer therapy.
PROTAC CDK2/9 Degrader-1 (Compound F3) is a potent dual PROTAC degrader targeting CDK2 (DC₅₀ = 62 nM) and CDK9 (DC₅₀ = 33 nM), constructed by linking a CDK inhibitor to a cereblon ligand. It effectively inhibits PC-3 prostate cancer cell proliferation (IC₅₀ = 0.12 µM) by inducing cell cycle arrest in the S and G2/M phases, making it a valuable tool for cancer and cell cycle research.
Synonyms: NX-2127
Zelebrudomide (NX-2127) is a novel, potent BTK degrader that induces proteasomal degradation through targeted ubiquitination, rather than direct inhibition. In addition to degrading BTK, Zelebrudomide (NX-2127) enhances immune responses by stimulating T cell activation and increasing IL-2 production in primary human T cells, supporting its potential in cancer and immunotherapy research.
JQAD1 is a CRBN-dependent PROTAC selectively targeting EP300 for degradation. It effectively reduces EP300 protein levels and H3K27ac histone acetylation, resulting in apoptosis. JQAD1 is a valuable tool for investigating EP300 function and epigenetic regulation in cellular processes.
GNE-987 is a highly potent PROTAC degrader of BRD4, composed of a BET inhibitor, a von Hippel-Lindau (VHL) ligand, and a ten-methylene linker. It binds both BD1 and BD2 bromodomains of BRD4 with low nanomolar affinity (IC₅₀ = 4.7 and 4.4 nM) and induces BRD4 degradation with a DC₅₀ of 0.03 nM in EOL-1 AML cells. GNE-987 is also suitable for use in PROTAC–Antibody Conjugates (PAC), making it a valuable tool for targeted protein degradation and epigenetic cancer research.
SD-36 is a selective PROTAC degrader of STAT3 that induces potent degradation of STAT3 protein both in vitro and in vivo, with minimal impact on other STAT family members. By suppressing STAT3-driven transcriptional programs, SD-36 inhibits the proliferation of acute myeloid leukemia and anaplastic large-cell lymphoma cells through cell cycle arrest and apoptosis. In xenograft mouse models, SD-36 achieves complete and sustained tumor regression at well-tolerated doses, making it a promising tool for cancer research and targeted therapy development.
Synonyms: PROTAC IRAK4 degrader-7; KYM-001
KT-474 (SAR444656) is a selective small-molecule PROTAC degrader of IRAK4, under development for the treatment of TLR/IL-1R–mediated autoimmune diseases. It effectively suppresses R848 (TLR7/8)- and LPS-induced IL-6 and IL-8 production in peripheral blood mononuclear cells (PBMCs), highlighting its potential as an anti-inflammatory therapeutic.
Synonyms: CC-94676
BMS-986365 (CC-94676) is an orally active, selective PROTAC degrader targeting the androgen receptor (AR), including AR mutants. It functions via cereblon (CRBN)-mediated ubiquitination and proteasomal degradation of AR. BMS-986365 exhibits strong in vivo efficacy by suppressing AR signaling and inhibiting tumor growth in advanced prostate cancer models, making it a promising candidate for therapeutic development.
dCBP-1 is a potent and selective heterobifunctional PROTAC degrader of p300/CBP, utilizing a cereblon ligand for E3 ligase recruitment. It effectively eliminates oncogenic enhancer activity driving MYC expression and demonstrates strong cytotoxicity against multiple myeloma cells, making it a valuable tool for epigenetic and cancer research.
MTX-23 is an androgen receptor (AR)-targeting PROTAC that degrades both AR-FL and the splice variant AR-V7. It effectively inhibits prostate cancer cell proliferation and induces apoptosis, making it a promising tool for studying AR signaling and therapeutic resistance in prostate cancer.
LC-2 is a first-in-class, VHL-based PROTAC designed to degrade endogenous KRAS G12C. Incorporating a MRTX849-derived covalent warhead, LC-2 binds KRAS G12C and recruits the VHL E3 ligase, inducing rapid and sustained degradation with DC₅₀ values between 0.25 and 0.76 μM. It effectively suppresses MAPK signaling in both homozygous and heterozygous KRAS G12C mutant cell lines, making it a valuable tool for targeted cancer research.
INY-03-041 is a potent and highly selective PROTAC-based pan-AKT degrader that targets AKT1, AKT2, and AKT3 with IC₅₀ values of 2.0 nM, 6.8 nM, and 3.5 nM, respectively. It is composed of the ATP-competitive AKT inhibitor GDC-0068 linked to the cereblon ligand lenalidomide, making it a valuable tool for studying AKT signaling and targeted cancer therapy.
C-02 is a PROTAC molecule composed of the hexokinase inhibitor lonidamine linked to the cereblon ligand thalidomide. It selectively degrades hexokinase 2 in 786-O and PANC-1 cells at 20 µM. C-02 exhibits cytotoxicity across multiple cancer cell lines, with IC₅₀ values of 34.07 µM (786-O), 5.08 µM (4T1), 31.53 µM (PANC-1), 6.11 µM (HGC-27), and 21.65 µM (MCF-7), supporting its use in cancer metabolism research.
XL01126 is a potent PROTAC degrader of LRRK2, with DC₅₀ values of 14 nM for the G2019S mutant and 32 nM for wild-type LRRK2. It is blood-brain barrier permeable, making it a valuable tool for Parkinson’s disease research. XL01126 enables investigation of both catalytic and non-catalytic functions of LRRK2.
BSJ-4-116 is a PROTAC molecule derived from a modified form of the multi-kinase degrader TL12-186, linked to a cereblon ligand and E3 ligase ligand intermediate. It induces time- and concentration-dependent degradation of CDK12 in Jurkat T cells and downregulates genes involved in DNA double-strand break repair at 50 nM. BSJ-4-116 also inhibits MOLT-4 leukemia cell growth in a cereblon-dependent manner, supporting its application in cancer and DNA repair research.
SK-575 is a highly potent and selective PROTAC degrader of PARP1, with an IC₅₀ of 2.30 nM. It effectively inhibits the proliferation of cancer cells harboring BRCA1/2 mutations, making it a valuable agent for targeted cancer research.
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dTAGV-1 TFA is a potent and selective degrader of FKBP12^F36V-tagged fusion proteins. It enables efficient in vivo degradation of FKBP12^F36V-Nluc, making it a valuable tool for conditional protein degradation studies in live models.
