General Information of This Peptide-drug Conjugate (PDC)
PDC ID
PDC_00047
PDC Name
99mTc-HYNIC-CLB-c(NGR)
PDC Status
Investigative
Indication
In total 1 Indication(s)
Melanoma
Structure
Peptide Name
Cyclic NGR
 Peptide Info 
Drug Name
Chlorambucil
 Drug Info 
Therapeutic Target
DNA topoisomerase 2-alpha (TOP2A)
 Target Info 
Linker Name
Amide bond
 Linker Info 
Peptide Modified Type
Cyclization modification
Modified Segment
Head-to-tail cyclization
Formula
C59H90Cl2N20O16S2Tc+4
#Ro5 Violations (Lipinski): 5 Molecular Weight 1569.439255
Lipid-water partition coefficient (xlogp) -3.05413
Hydrogen Bond Donor Count (hbonddonor) 15
Hydrogen Bond Acceptor Count (hbondacc) 25
Rotatable Bond Count (rotbonds) 36
Full List of Activity Data of This Peptide-drug Conjugate
Revealed Based on the Cell Line Data
Click To Hide/Show 5 Activity Data Related to This Level
Experiment 1 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Growth inhibition rate
30%
Administration Time 48 h
Administration Dosage 1 µM
Evaluation Method MTT assay
Description
The exposure of cells to PDC resulted in significant growth inhibition at all the concentrations as compared to the drug or the peptide alone. It was observed that nearly 25-fold excess concentration of the drug is required to achieve similar cytotoxicity as obtained on exposure to PDC. The RGD peptide-CLB conjugate has also been reported to show higher growth inhibition in B16F10 cells as compared to the drug or peptide alone.24 The enhanced cytotoxic effect of PDC even at lower levels indicates clear advantage in reducing the systemic exposure and side effects of the drug.

   Click to Show/Hide
In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
Experiment 2 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Growth inhibition rate
33%
Administration Time 48 h
Administration Dosage 5 µM
Evaluation Method MTT assay
MOA of PDC
Although RNT with 177Lu-DOTATATE/PSMA is known as a novel and effective therapy option for cancer that significantly improves the quality of life and survival of patients, it may have acute or chronic side effects. Therefore, any method that can ameliorate these side effects is useful in the RNT process. For this purpose, a few clinical studies have reported that antioxidants as free radical scavengers such as amifostine and vitamins C and E can reduce radioiodine-related side effects, particularly in salivary glands in thyroid cancer patients.

   Click to Show/Hide
Description
The exposure of cells to PDC resulted in significant growth inhibition at all the concentrations as compared to the drug or the peptide alone. It was observed that nearly 25-fold excess concentration of the drug is required to achieve similar cytotoxicity as obtained on exposure to PDC. The RGD peptide-CLB conjugate has also been reported to show higher growth inhibition in B16F10 cells as compared to the drug or peptide alone.24 The enhanced cytotoxic effect of PDC even at lower levels indicates clear advantage in reducing the systemic exposure and side effects of the drug.

   Click to Show/Hide
In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
Experiment 3 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Growth inhibition rate
40%
Administration Time 48 h
Administration Dosage 10 µM
Evaluation Method MTT assay
Description
The exposure of cells to PDC resulted in significant growth inhibition at all the concentrations as compared to the drug or the peptide alone. It was observed that nearly 25-fold excess concentration of the drug is required to achieve similar cytotoxicity as obtained on exposure to PDC. The RGD peptide-CLB conjugate has also been reported to show higher growth inhibition in B16F10 cells as compared to the drug or peptide alone.24 The enhanced cytotoxic effect of PDC even at lower levels indicates clear advantage in reducing the systemic exposure and side effects of the drug.

   Click to Show/Hide
In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
Experiment 4 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Growth inhibition rate
55%
Administration Time 48 h
Administration Dosage 25 µM
Evaluation Method MTT assay
Description
The exposure of cells to PDC resulted in significant growth inhibition at all the concentrations as compared to the drug or the peptide alone. It was observed that nearly 25-fold excess concentration of the drug is required to achieve similar cytotoxicity as obtained on exposure to PDC. The RGD peptide-CLB conjugate has also been reported to show higher growth inhibition in B16F10 cells as compared to the drug or peptide alone.24 The enhanced cytotoxic effect of PDC even at lower levels indicates clear advantage in reducing the systemic exposure and side effects of the drug.

   Click to Show/Hide
In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
Experiment 5 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Growth inhibition rate
75%
Administration Time 48 h
Administration Dosage 50 µM
Evaluation Method MTT assay
Description
The exposure of cells to PDC resulted in significant growth inhibition at all the concentrations as compared to the drug or the peptide alone. It was observed that nearly 25-fold excess concentration of the drug is required to achieve similar cytotoxicity as obtained on exposure to PDC. The RGD peptide-CLB conjugate has also been reported to show higher growth inhibition in B16F10 cells as compared to the drug or peptide alone.24 The enhanced cytotoxic effect of PDC even at lower levels indicates clear advantage in reducing the systemic exposure and side effects of the drug.

   Click to Show/Hide
In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
References
Ref 1 (99m) Tc-labeled NGR-chlorambucil conjugate, (99m) Tc-HYNIC-CLB-c(NGR) for targeted chemotherapy and molecular imaging. J Labelled Comp Radiopharm. 2017 Jul;60(9):431-438. doi: 10.1002/jlcr.3522. Epub 2017 Jun 21.