General Information of This Linker
Linker ID
LIN0KBGIK
Linker Name
Styrylboronic acid-Val-Cit-PAB
Linker Type
Cathepsin-cleavable linker
Antibody-Linker Relation
Cleavable
Structure
Formula
C33H47BN6O7
Isosmiles
CC([C@H](NC(C(CC1)CCN1CC2=CC=C(/C=C/B(O)O)C=C2)=O)C(N[C@@H](CCCNC(N)=O)C(NC3=CC=C(CO)C=C3)=O)=O)C
InChI
InChI=1S/C33H47BN6O7/c1-22(2)29(32(44)38-28(4-3-17-36-33(35)45)31(43)37-27-11-9-25(21-41)10-12-27)39-30(42)26-14-18-40(19-15-26)20-24-7-5-23(6-8-24)13-16-34(46)47/h5-13,16,22,26,28-29,41,46-47H,3-4,14-15,17-21H2,1-2H3,(H,37,43)(H,38,44)(H,39,42)(H3,35,36,45)/b16-13+/t28-,29-/m0/s1
InChIKey
DZLXWQYRHMZOCI-DTQRXTAWSA-N
Pharmaceutical Properties
Molecule Weight
650.586
Polar area
206.35
Complexity
1286.811944
xlogp Value
1.1289
Heavy Count
47
Rot Bonds
16
Hbond acc
8
Hbond Donor
8
Each Antibody-drug Conjugate Related to This Linker
Full Information of The Activity Data of The ADC(s) Related to This Linker
Tra-CAST-MMAE [Investigative]
Revealed Based on the Cell Line Data
Click To Hide/Show 3 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
0.2 nM
High HER2 expression (HER2 +++)
Method Description
Cells were seeded in a 96-well white opaque plate at a density of 5 × 103/well (CHO, ATCC, CCL-61) or 1 × 104/well (MCF7 (ATCC, HTB-22), SK-BR-3 (ATCC, HTB-30), SK-OV-3 (ATCC, HTB-77) or JIMT-1 (Beyotime, C6453)). Cells were allowed to attach for 24 h at 37 °C and 5% CO2 in humidified atmosphere. Cells were then treated with serial dilutions of Tra-CAST, Tra-CAST-MMAE and SBA-MMAE or Tra-CASTi, Tra-CASTi-MMAE and DBCO-MMAE for 96 h (BT474, MCF7, SK-BR-3). Cell viability was determined using CellTiter Glo reagents (G7571) and was normalized to the control cells. Data was analyzed by Graphpad software, and the half-maximal effective concentration (EC50) value was calculated by fitting with the log (inhibitor) vs. response module.

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In Vitro Model Breast adenocarcinoma SK-BR-3 cells CVCL_0033
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
1.2 nM
High HER2 expression (HER2 +++)
Method Description
Cells were seeded in a 96-well white opaque plate at a density of 5 × 103/well (CHO, ATCC, CCL-61) or 1 × 104/well (MCF7 (ATCC, HTB-22), SK-BR-3 (ATCC, HTB-30), SK-OV-3 (ATCC, HTB-77) or JIMT-1 (Beyotime, C6453)). Cells were allowed to attach for 24 h at 37 °C and 5% CO2 in humidified atmosphere. Cells were then treated with serial dilutions of Tra-CAST, Tra-CAST-MMAE and SBA-MMAE or Tra-CASTi, Tra-CASTi-MMAE and DBCO-MMAE for 96 h (BT474, MCF7, SK-BR-3). Cell viability was determined using CellTiter Glo reagents (G7571) and was normalized to the control cells. Data was analyzed by Graphpad software, and the half-maximal effective concentration (EC50) value was calculated by fitting with the log (inhibitor) vs. response module.

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In Vitro Model Ovarian serous adenocarcinoma SKOV-3 cells CVCL_0532
Experiment 3 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
1.7 nM
Positive HER2 expression ( HER2+++/++)
Method Description
Cells were seeded in a 96-well white opaque plate at a density of 5 × 103/well (CHO, ATCC, CCL-61) or 1 × 104/well (MCF7 (ATCC, HTB-22), SK-BR-3 (ATCC, HTB-30), SK-OV-3 (ATCC, HTB-77) or JIMT-1 (Beyotime, C6453)). Cells were allowed to attach for 24 h at 37 °C and 5% CO2 in humidified atmosphere. Cells were then treated with serial dilutions of Tra-CAST, Tra-CAST-MMAE and SBA-MMAE or Tra-CASTi, Tra-CASTi-MMAE and DBCO-MMAE for 96 h (BT474, MCF7, SK-BR-3). Cell viability was determined using CellTiter Glo reagents (G7571) and was normalized to the control cells. Data was analyzed by Graphpad software, and the half-maximal effective concentration (EC50) value was calculated by fitting with the log (inhibitor) vs. response module.

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In Vitro Model Breast ductal carcinoma JIMT-1 cells CVCL_2077
References
Ref 1 Copper assisted sequence-specific chemical protein conjugation at a single backbone amide