General Information of This Drug
Drug ID DRG00058
Drug Name Cryptophycin analog
Target(s) Microtubule (MT)  Target Info 
Structure
Formula
C47H68ClN5O7S
#Ro5 Violations (Lipinski): 3 Molecular Weight (mw) 882.609
Lipid-water partition coefficient (xlogp) 6.3464
Hydrogen Bond Donor Count (hbonddonor) 3
Hydrogen Bond Acceptor Count (hbondacc) 10
Rotatable Bond Count (rotbonds) 14
Canonical smiles
COc1ccc(CC2NC(=O)C=CCC(C(C)C3OC3c3ccc(CN4CCN(CCC(C)(C)SC)CC4)cc3)OC(=O)C(CC(C)C)NC(=O)C(C)(C)CNC2=O)cc1Cl
InChI
InChI=1S/C47H68ClN5O7S/c1-30(2)25-37-44(56)59-38(31(3)41-42(60-41)34-16-13-32(14-17-34)28-53-23-21-52(22-24-53)20-19-47(6,7)61-9)11-10-12-40(54)50-36(27-33-15-18-39(58-8)35(48)26-33)43(55)49-29-46(4,5)45(57)51-37/h10,12-18,26,30-31,36-38,41-42H,11,19-25,27-29H2,1-9H3,(H,49,55)(H,50,54)(H,51,57)/b12-10+/t31-,36+,37-,38-,41+,42+/m0/s1
InChIKey
MBBGBLPGZZBLNN-BJKDTTSBSA-N
Each Peptide-drug Conjugate Related to This Drug
Full Information of The Activity Data of The PDC(s) Related to This Drug
ER-472 [Investigative]
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 6 Activity Data Related to This Level
Experiment 1 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 5.45%
Administration Time 23days
Administration Dosage 1.25 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model BxPC-3 xenograft model.
Experiment 2 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 36.70%
Administration Time 30 days
Administration Dosage 1.25 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model MIA PaCa-2 xenograft model.
Experiment 3 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 69.23%
Administration Time 38 days
Administration Dosage 0.625 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model PC-3 xenograft model.
Experiment 4 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 74.54%
Administration Time 23days
Administration Dosage 2.5 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model BxPC-3 xenograft model.
Experiment 5 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 100%
Administration Time 38 days
Administration Dosage 1.25 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model PC-3 xenograft model.
Experiment 6 Reporting the Activity Data of This PDC [1]
Indication Tumor
Efficacy Data Tumor Growth Inhibition value (TGI) 100%
Administration Time 30 days
Administration Dosage 2.5 mg/kg
MOA of PDC
Collectively, our data demonstrate that Cltx within ER-472 acts a cryptic peptide which is metabolized to peptides with C-terminal R-COOH in the tumor microenvironment. These peptides bind to tumor cell NRP1 to increase drug uptake, which consequently boosts the antitumor effect.
Description
At the MTD dose, ER-472 treatment resulted in significant antitumor activity in all 3 models, but at 1/2 MTD no antitumor activity was observed in MIA PaCa-2 or BxPC-3 xenografts. In contrast, a much wider therapeutic window was observed for ER-472 in PC-3 xenografts: tumor regression and several tumor cures were observed at 1/2 MTD and significant antitumor activity was also recorded at the 1/4 MTD dose.

   Click to Show/Hide
In Vivo Model MIA PaCa-2 xenograft model.
References
Ref 1 Neuropilin-1 drives tumor-specific uptake of chlorotoxin. Cell Commun Signal. 2019 Jun 17;17(1):67. doi: 10.1186/s12964-019-0368-9.