General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0BEBDI
ADC Name
n501-alphaHSA-MMAE
Synonyms
n501-alphaHSA-MMAE
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Organization
Fudan University; Hebei Agricultural University.
Drug Status
Investigative
Drug-to-Antibody Ratio
0.71
Structure
Antibody Name
n501-alphaHSA
 Antibody Info 
Antigen Name
Trophoblast glycoprotein (TPBG)
 Antigen Info 
Payload Name
Monomethyl auristatin E
 Payload Info 
Therapeutic Target
Microtubule (MT)
 Target Info 
Linker Name
Mc-Val-Cit-PABC
 Linker Info 
Conjugate Type
DBCO-Azide Click Chemistry Conjugation
Combination Type
Vedotin
General Information of The ADMET Data Related to This ADC(2027 Update)
Absorption
Click To Hide/Show 2 Absorption Data Related to This Level
Standard Type Value Units Description Reference
Maximum Observed Concentration (Cmax) 84.4±23.16 ug/mL
Pharmacokinetic parameters of ADC in Healthy BALB/c mice
[1]
Maximum Observed Concentration (Cmax) 55.79±14.56 ug/mL
Pharmacokinetic parameters of ADC in BxPC-3 xenograft nude mice
[1]
Excretion
Click To Hide/Show 2 Excretion Data Related to This Level
Standard Type Value Units Description Reference
Elimination Half-Life (t1/2) 16.99±1.86 h
Pharmacokinetic parameters of ADC in Healthy BALB/c mice
[1]
Elimination Half-Life (t1/2) 12.2±0.87 h
Pharmacokinetic parameters of ADC in BxPC-3 xenograft nude mice
[1]
General Information of The Activity Data Related to This ADC
Revealed Based on the Cell Line Data
Click To Hide/Show 7 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal inhibitory Concentration (lC50) 
14.57
nM
CVCL_0479
Ovarian mixed germ cell tumor
Half Maximal inhibitory Concentration (lC50) 
16.01
nM
CVCL_0532
Ovarian serous adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
23.5
nM
CVCL_0031
Invasive breast carcinoma
Half Maximal inhibitory Concentration (lC50) 
41.82
nM
CVCL_0419
Breast adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
45.43
nM
CVCL_0186
Pancreatic ductal adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
> 1000
nM
CVCL_0480
Pancreatic ductal adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
> 1000
nM
CVCL_U424
Normal
Full List of Activity Data of This Antibody-drug Conjugate
Revealed Based on the Cell Line Data
Click To Hide/Show 7 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 14.57 nM Moderate 5T4 expression (5T4++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Ovarian mixed germ cell tumor PA-1 cells CVCL_0479
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 16.01 nM Moderate 5T4 expression (5T4++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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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 inhibitory Concentration (lC50) 23.5 nM High 5T4 expression (5T4 +++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Invasive breast carcinoma MCF-7 cells CVCL_0031
Experiment 4 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 41.82 nM High 5T4 expression (5T4 +++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Breast adenocarcinoma MDA-MB-468 cells CVCL_0419
Experiment 5 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 45.43 nM Moderate 5T4 expression (5T4++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Pancreatic ductal adenocarcinoma BxPC-3 cells CVCL_0186
Experiment 6 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) > 1000 nM High 5T4 expression (5T4 +++)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Pancreatic ductal adenocarcinoma PANC-1 cells CVCL_0480
Experiment 7 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) > 1000 nM Low 5T4 expression (5T4+)
Method Description
Cytotoxicity assays performed in the presence of n501-MMAE and n501-alphaHSA-MMAE and their antibody control was assessed using cells plated at 5000 cells per well in medium with in flat bottom 96-well cell culture plates (NEST Biotechnology, China). After 12 h, tumor cells were added with serial dilutions of n501-alphaHSA-MMAE or n501-MMAE in triplicate wells and incubated for 72 h at 37°C in a humidified 5% CO2 atmosphere. After mixing CCK8 reagent and complete medium at a ratio of 1:9, the cell culture medium was removed and CCK8 working solution was added for another 1-3 h. The absorbance was measured by a microplate reader at 450 nm, and the cell viability ratio (%) was calculated using the following formula: (A sample - A blank)/ (A control - A blank) × 100%.

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In Vitro Model Normal FCHO cells CVCL_U424
References
Ref 1 Half-life extension of single-domain antibody-drug conjugates by albumin binding moiety enhances antitumor efficacy