SNIPER

PROTAC ERα Degrader-2 is composed of a cIAP1 ligand binding group, a linker, and an estrogen receptor α (ERα) binding group, serving as an ERα degrader. It achieves maximal ERα degradation in human mammary tumor MCF7 cells at a concentration of 30 μM. Degradation inducers that utilize cIAP1 are referred to as specific and non-genetic IAP-dependent protein erasers (SNIPERs)[1].

SNIPER(BRD)-1 is a chemical compound composed of a derivative of the IAP antagonist LCL-161 and the BET inhibitor (+)-JQ-1, linked together. It promotes the degradation of BRD4 through the ubiquitin-proteasome pathway and effectively degrades cIAP1, cIAP2, and XIAP with IC50 values of 6.8 nM, 17 nM, and 49nM, respectively[1].

SNIPER(ER)-87 is a chemical compound composed of a derivative of the inhibitor of apoptosis protein (IAP) ligand LCL161 conjugated to the estrogen receptor α (ERα) ligand 4-hydroxytamoxifen using a PEG linker. It effectively degrades the ERα protein with an IC50 value of 0.097 μM. Within cells, SNIPER(ER)-87 selectively recruits XIAP to ERα, and XIAP functions as the primary E3 ubiquitin ligase responsible for the degradation of ERα induced by SNIPER(ER)-87[1][2].

SNIPER(ABL)-015, a compound that conjugates GNF5 (ABL inhibitor) to MV-1 (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels with a DC50 of 5 μM [1].

PROTAC AR Degrader-4 comprises a cIAP1 ligand binding group, a linker and an androgen receptor (AR) binding group. PROTAC AR Degrader-4 is an AR degrader. Degradation inducers based on cIAP1 are called specific and non-genetic IAP-dependent protein erasers (SNIPERs)[1].

SNIPER(ABL)-039, conjugating Dasatinib (ABL inhibitor) to LCL161 derivative (IAP ligand) with a linker, induces the reduction of BCR-ABL protein with a DC50 of 10 nM. IC50s are 0.54 nM, 10 nM, 12 nM, and 50 nM for ABL, cIAP1, cIAP2, XIAP, respectively[1].

SNIPER(ABL)-047, a compound that links HG-7-85-01 (an ABL inhibitor) to MV-1 (an IAP ligand) via a linker, effectively decreases the BCR-ABL protein levels, achieving a DC50 value of 2 μM[1].

SNIPER(ABL)-024, a compound that conjugates GNF5 (ABL inhibitor) to an LCL161 derivative (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels, achieving a half-maximal degradation concentration (DC50) of 5μM[1].

SNIPER(ABL)-050 is a chemical compound that combines Imatinib, an ABL inhibitor, with MV-1, an IAP ligand, using a linker. This conjugation results in the reduction of BCR-ABL protein[1].

SNIPER(ABL)-033, a compound that conjugates HG-7-85-01 (ABL inhibitor) to a LCL161 derivative (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels, exhibiting a DC50 of 0.3 μM[1].

SNIPER(ABL)-013, a compound that links GNF5 (ABL inhibitor) with Bestatin (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels with a DC50 of 20 μM[1].

SNIPER(ABL)-058, a compound that links Imatinib (ABL inhibitor) with a derivative of LCL161 (IAP ligand) through a linker, effectively decreases BCR-ABL protein levels, achieving a half-maximal degradation concentration (DC50) of 10 μM[1].

PROTAC CRABP-II Degrader-2 is a potent degrader of cellular retinoic acid binding protein (CRABP-II) based on cIAp1.

SNIPER(ABL)-019, a compound that links Dasatinib (ABL inhibitor) to MV-1 (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels, exhibiting a DC50 of 0.3 μM[1].

SNIPER(ER)-110 consists of a cIAP1 ligand and an estrogen ligand, connected by a linker. SNIPER(ER)-51 induces estrogen receptor (ER) protein degradation with DC50s of <3 nM and 7.7 nM after 4 h and 48 h, respectively[1].

SNIPER(ABL)-049, a compound that conjugates Imatinib (ABL inhibitor) with Bestatin (IAP ligand) through a linker, effectively reduces BCR-ABL protein levels, demonstrating a DC50 of 100 μM[1].

BzNH-BS is a chemical compound comprising two distinct ligands: methyl-bestatin (MeBS) for cIAP1 and benzoyl-amide. The ligands are interconnected through linkers. MeBS functions as a ligand for cIAP1, a ubiquitin ligase involved in cellular inhibition of apoptosis processes [1].

PROTAC RAR Degrader-1, an RAR degrader, consists of a cIAP1 ligand binding group, a linker, and an RAR ligand binding group. It achieves maximal RAR degradation at a concentration of 30 μM in HT1080 cells. Degradation inducers that utilize cIAP1 are known as specific and non-genetic IAP-dependent protein erasers (SNIPERs)[1].

SNIPER(ABL)-044, a compound that links HG-7-85-01 (ABL inhibitor) to Bestatin (IAP ligand) via a linker, effectively reduces BCR-ABL protein levels, achieving a DC50 value of 10 μM[1].

SNIPER(TACC3)-2 targets TACC3 protein degradation via the ubiquitin-proteasome pathway. It induces cancer cell death.

SNIPER(TACC3)-1 targets TACC3 protein degradation via the ubiquitin-proteasome pathway.It induces cancer cell death.

SNIPER(ABL)-020 is a chemical compound consisting of Dasatinib, an ABL inhibitor, and Bestatin, an IAP ligand, conjugated with a linker. This compound effectively reduces the BCR-ABL protein[1].

PROTAC CRABP-II Degrader-1 is a potent degrader of cellular retinoic acid binding protein (CRABP-II) based on cIAp1.

Biotin-BS is a chemical compound composed of two distinct ligands: methyl-bestatin (MeBS) for cIAP1 and biotin. These ligands are interconnected through linkers. MeBS serves as a ligand specifically for the cellular inhibitor of apoptosis protein 1 (cIAP1) ubiquitin ligase[1].

PROTAC CRABP-II Degrader-3 is a potent degrader of cellular retinoic acid binding protein (CRABP-II) based on cIAp1.