General Information of This Peptide-drug Conjugate (PDC)
PDC ID
PDC_02034
PDC Name
R-C12-1
PDC Status
Investigative
Indication
In total 1 Indication(s)
Melanoma
Structure
Peptide Name
R-C12
 Peptide Info 
Drug Name
D-Glucose
 Drug Info 
Linker Name
Glutaric acid
 Linker Info 
Peptide Modified Type
The modification of binding with chemical molecules
Modified Segment
Dodecanoic acid
Ternimal Modification
N-terminus
Formula
C156H256N46O38S
#Ro5 Violations (Lipinski): 5 Molecular Weight 3416.115
Lipid-water partition coefficient (xlogp) -6.97278
Hydrogen Bond Donor Count (hbonddonor) 53
Hydrogen Bond Acceptor Count (hbondacc) 43
Rotatable Bond Count (rotbonds) 121
Full List of Activity Data of This Peptide-drug Conjugate
Revealed Based on the Cell Line Data
Click To Hide/Show 1 Activity Data Related to This Level
Experiment 1 Reporting the Activity Data of This PDC [1]
Indication Melanoma
Efficacy Data Half maximal inhibitory concentration (IC50)
3.5 μM
Administration Time 24 h
Evaluation Method CCK-8 assay
MOA of PDC
In this study, we would investigate the co-modification of fatty acids and monosaccharides in anticancer peptides, as we expect to optimize the selectivity and cytotoxicity of the peptide at the same time. Based on our previous study, the lipopeptide R-C12 was selected as a template to perform glucose derivative modification at different positions as we supposed that the glucose derivative modification position in R-C12 might be a crucial factor in its selectivity and activity optimization. The glucose derivative was covalently coupled to different sites in R-C12 through its -amino group of a Lys residue, which was obtained by replacing the Arg residue. R-C12 contains seven Arg residues, accordingly, seven glycolipid peptides were designed and synthesized, which were named R-C12-1, R-C12-2, R-C12-3, R-C12-4, R-C12-5, R-C12-6, and R-C12-7. Various physiochemical properties including the hydrodynamic size, ζ-potential, secondary structure, and hydrophobicity were determined to explain the different cytotoxicity and selectivity of these glycolipid peptides. On the other hand, the strength of the binding between glycolipid peptides and the cancer cells mediated by GLUT1 has also been explored. The most optimized glycolipid peptide R-C12-4 demonstrated significant cytotoxicity and antimetastasis in vitro and in vivo, which indicated that it may be a good lead for anticancer drug development.

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Description
Murine melanoma cells (B16-F10) were chosen as the object for evaluating the cytotoxicity of the seven glycolipid peptides and R-C12 by the CCK-8 assay. Based on our previous study, the HEK-293T cell line was also chosen as the noncancer cell line to evaluate the selectivity of glycolipid peptides. IC50 represents the concentration of glycolipid peptides and R-C12 that induce 50% cell death. As shown in Figure 1A, modification of the glucose derivative at different sites of R-C12 results in different cytotoxicity profiles. According to the IC50 values, for B16-F10 cells, the cytotoxic activity of peptides was arranged as follows R-C12-4 > R-C12-1 ≈ R-C12-2 ≈ R-C12-3 ≈ R-C12 > R-C12-5 > R-C12-6 > R-C12-7, in which R-C12-4 demonstrated the highest cytotoxicity on B16-F10 cells (IC50 = 1.9 μM)

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In Vitro Model Mouse melanoma B16-F10 cell CVCL_0159
References
Ref 1 Glucose-Lipopeptide Conjugates Reveal the Role of Glucose Modification Position in Complexation and the Potential of Malignant Melanoma Therapy. J Med Chem. 2021 Aug 12;64(15):11483-11495. doi: 10.1021/acs.jmedchem.1c00805. Epub 2021 Jul 20.