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Assay Detail

CHEMBL5737007

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Binding
SSTR1 I-125 Somatostatin Competition Binding Assay for Selectivity Versus SSTR4: This membrane-based assay measures the ability of compounds to competitively inhibit binding of I-125 labeled somatostatin to SSTR1 in membranes from CHO-K1 that overexpress SSTR1. Membranes from CHO-K1 cells overexpressing SSTR1 are purchased from Perkin Elmer (catalog number ES-520-M400UA). Test compounds are suspended in DMSO and then diluted in assay buffer (25 mM HEPES pH 7.4, 10 mM MgCl2, 1 mM CaCl2), 0.5% BSA) plus 0.4 nM I-125 labeled somatostatin (Perkin Elmer catalog number NEX389). Fifty μL of compound/I-125 somatostatin in assay buffer are added per well to 96-well poly-propylene plate. Then 10 μg of SSTR1 membranes in 50 μL assay buffer are added per well. The plate is incubated for 60 minutes at room temperature. FilterMat A filters (Perkin Elmer catalog number 1450-421) are pre-soaked in 0.5% PEI (Sigma catalog number P3143). The contents of the assay plate are transferred to filters with a TomTech harvester and washed 5 times with 20 mM HEPES, 100 mM NaCl. The filters are dried in a microwave oven then transferred to sample bag containing a scintillator sheet (Perkin Elmer catalog number 1450-441). The scintillator sheets are melted to the filters using a heat block. The filters are then read in a MicroBeta scintillation counter. Binding Ki curves are generated using Activity Base for Screening Data Management and the results are reported as pIC50.
342
Total Activities
109
Compounds Tested
3
Activity Types
0
Assay Parameters

Assay Information

Assay Type Binding
Confidence 8 — Homologous single protein target
Curated By Autocuration

Target

Somatostatin receptor type 1 (CHEMBL1917)
Type SINGLE PROTEIN
Organism Homo sapiens

Publication

Piperidinyl-3-(aryloxy)propanamides and propanoates
(2021)

Activity Statistics

Type Count Avg pChEMBL Best pChEMBL
IC50 114 5.25 7.00
kon 114 - -
k_off 114 - -

Compounds Tested

Compound Name Phase Activities Best pChEMBL
CHEMBL5745719 3 7.00
CHEMBL6055274 3 6.90
CHEMBL5801992 3 6.90
CHEMBL5812815 3 6.90
CHEMBL5933642 3 6.80
CHEMBL5852788 3 6.60
CHEMBL5802392 3 6.50
CHEMBL5797414 3 6.40
CHEMBL5875145 3 6.40
CHEMBL5987384 3 6.40
CHEMBL5934843 3 6.20
CHEMBL5748582 3 6.10
CHEMBL5949740 3 6.10
CHEMBL5785607 3 6.10
CHEMBL5954701 3 6.00
CHEMBL5857117 3 5.80
CHEMBL5999769 3 5.80
CHEMBL5862026 3 5.80
CHEMBL5790086 3 5.80
CHEMBL6027712 3 5.70
CHEMBL5954140 3 5.70
CHEMBL5939370 3 5.60
CHEMBL5851110 3 5.60
CHEMBL6041440 3 5.50
CHEMBL5814161 3 5.50
CHEMBL5818753 3 5.50
CHEMBL5815326 3 5.50
CHEMBL5801275 3 5.50
CHEMBL5967165 3 5.50
CHEMBL5899589 3 5.50

Activity Data

Compound Name Type Rel. Value Units pChEMBL
CHEMBL5745719 IC50 = 100.0 nM 7.00
CHEMBL5812815 IC50 = 126.0 nM 6.90
CHEMBL5801992 IC50 = 126.0 nM 6.90
CHEMBL6055274 IC50 = 126.0 nM 6.90
CHEMBL5933642 IC50 = 158.0 nM 6.80
CHEMBL5852788 IC50 = 251.0 nM 6.60
CHEMBL5802392 IC50 = 316.0 nM 6.50
CHEMBL5875145 IC50 = 398.0 nM 6.40
CHEMBL5797414 IC50 = 398.0 nM 6.40
CHEMBL5987384 IC50 = 398.0 nM 6.40
CHEMBL5934843 IC50 = 631.0 nM 6.20
CHEMBL5949740 IC50 = 794.0 nM 6.10
CHEMBL5748582 IC50 = 794.0 nM 6.10
CHEMBL5785607 IC50 = 794.0 nM 6.10
CHEMBL5954701 IC50 = 1000.0 nM 6.00
CHEMBL5862026 IC50 = 1585.0 nM 5.80
CHEMBL5999769 IC50 = 1585.0 nM 5.80
CHEMBL5790086 IC50 = 1585.0 nM 5.80
CHEMBL5857117 IC50 = 1585.0 nM 5.80
CHEMBL6027712 IC50 = 1995.0 nM 5.70
CHEMBL5954140 IC50 = 1995.0 nM 5.70
CHEMBL5939370 IC50 = 2512.0 nM 5.60
CHEMBL5851110 IC50 = 2512.0 nM 5.60
CHEMBL5899589 IC50 = 3162.0 nM 5.50
CHEMBL5801275 IC50 = 3162.0 nM 5.50
CHEMBL5818753 IC50 = 3162.0 nM 5.50
CHEMBL5814161 IC50 = 3162.0 nM 5.50
CHEMBL5815326 IC50 = 3162.0 nM 5.50
CHEMBL5967165 IC50 = 3162.0 nM 5.50
CHEMBL6041440 IC50 = 3162.0 nM 5.50
CHEMBL5886715 IC50 = 3981.0 nM 5.40
CHEMBL6008758 IC50 = 3981.0 nM 5.40
CHEMBL5999051 IC50 = 3981.0 nM 5.40
CHEMBL5829751 IC50 = 5012.0 nM 5.30
CHEMBL6038753 IC50 = 5012.0 nM 5.30
CHEMBL6005000 IC50 = 5012.0 nM 5.30
CHEMBL6053521 IC50 = 5012.0 nM 5.30
CHEMBL5920986 IC50 = 5012.0 nM 5.30
CHEMBL5841698 IC50 = 6310.0 nM 5.20
CHEMBL5924029 IC50 = 6310.0 nM 5.20
CHEMBL5836617 IC50 = 6310.0 nM 5.20
CHEMBL5807083 IC50 = 6310.0 nM 5.20
CHEMBL5894549 IC50 = 7943.0 nM 5.10
CHEMBL5972254 IC50 = 7943.0 nM 5.10
CHEMBL6017778 IC50 = 7943.0 nM 5.10
CHEMBL6017778 IC50 = 7943.0 nM 5.10
CHEMBL5747308 IC50 = 7943.0 nM 5.10
CHEMBL5939445 IC50 = 7943.0 nM 5.10
CHEMBL5773674 IC50 = 7943.0 nM 5.10
CHEMBL6038030 IC50 = 7943.0 nM 5.10