General Information of This Linker
Linker ID
LIN0FFEBZ
Linker Name
P5 (PEG12)-VA
Linker Type
Cathepsin-cleavable linker
Antibody-Linker Relation
Cleavable
Structure
Formula
C41H70N3O18P
Isosmiles
CC([C@H](NC(C1=CC=C(NP(C#C)(OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO)=O)C=C1)=O)C(N[C@@H](C)C(O)=O)=O)C
InChI
InChI=1S/C41H70N3O18P/c1-5-63(50,44-37-8-6-36(7-9-37)39(46)43-38(34(2)3)40(47)42-35(4)41(48)49)62-33-32-61-31-30-60-29-28-59-27-26-58-25-24-57-23-22-56-21-20-55-19-18-54-17-16-53-15-14-52-13-12-51-11-10-45/h1,6-9,34-35,38,45H,10-33H2,2-4H3,(H,42,47)(H,43,46)(H,44,50)(H,48,49)/t35-,38-,63?/m0/s1
InChIKey
VTHXTFOOFRZMSU-IWKFCSCDSA-N
Pharmaceutical Properties
Molecule Weight
923.988
Polar area
255.59
Complexity
1326.741059
xlogp Value
1.4175
Heavy Count
63
Rot Bonds
44
Hbond acc
17
Hbond Donor
5
Each Antibody-drug Conjugate Related to This Linker
Full Information of The Activity Data of The ADC(s) Related to This Linker
37828728 ADC 7 [Investigative]
Revealed Based on the Cell Line Data
Click To Hide/Show 2 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
114.7 ng/mL
Positive HER2 expression (HER2+++/++)
Method Description
To investigate the cytotoxicity of the unconjugated small-molecule TOP1 inhibitors and ADCs, respective cells were incubated for 4 days (small molecules) and 7 days (ADCs) with increasing concentrations of small molecules (0.015-1,000 nmol/L) and ADCs (0.05-3 ug/mL) to generate a dose-response curve. Killing was analyzed using resazurin cell viability dye at a final concentration of 55 umol/L (Merck) by dividing the fluorescence from control cells in medium by the fluorescence of ADC-treated cells. Fluorescence emission at 590 nmol/L was measured on a microplate reader Infinite 200 Pro (Tecan Group Ltd.).

   Click to Show/Hide
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) > 3000 ng/mL Negative HER2 expression (HER2-)
Method Description
To investigate the cytotoxicity of the unconjugated small-molecule TOP1 inhibitors and ADCs, respective cells were incubated for 4 days (small molecules) and 7 days (ADCs) with increasing concentrations of small molecules (0.015-1,000 nmol/L) and ADCs (0.05-3 ug/mL) to generate a dose-response curve. Killing was analyzed using resazurin cell viability dye at a final concentration of 55 umol/L (Merck) by dividing the fluorescence from control cells in medium by the fluorescence of ADC-treated cells. Fluorescence emission at 590 nmol/L was measured on a microplate reader Infinite 200 Pro (Tecan Group Ltd.).

   Click to Show/Hide
In Vitro Model Lung adenocarcinoma HCC-78 cells CVCL_2061
References
Ref 1 Design and Evaluation of Phosphonamidate-Linked Exatecan Constructs for Highly Loaded, Stable, and Efficacious Antibody-Drug Conjugates