General Information of This Drug
Drug ID DRG00061
Drug Name KLUKLUKKLUKLUK
Structure
Formula
C72H138N20O15Se4
#Ro5 Violations (Lipinski): 5 Molecular Weight (mw) 1839.861
Lipid-water partition coefficient (xlogp) -5.0645
Hydrogen Bond Donor Count (hbonddonor) 21
Hydrogen Bond Acceptor Count (hbondacc) 21
Rotatable Bond Count (rotbonds) 74
Canonical smiles
[H]NCCCCC(NC(=O)C(C[Se][H])NC(=O)C(CC(C)C)NC(=O)C(CCCCN[H])NC(=O)C(C[Se][H])NC(=O)C(CC(C)C)NC(=O)C(CCCCN[H])NC(=O)C(CCCCN[H])NC(=O)C(C[Se][H])NC(=O)C(CC(C)C)NC(=O)C(CCCCN[H])NC(=O)C(C[Se][H])NC(=O)C(CC(C)C)NC(=O)C(CCCCN[H])N[H])C(=O)O
InChI
InChI=1S/C72H138N20O15Se4/c1-41(2)33-51(85-59(93)45(79)21-9-15-27-73)64(98)89-55(37-108)69(103)82-48(24-12-18-30-76)62(96)87-53(35-43(5)6)66(100)90-56(38-109)68(102)81-46(22-10-16-28-74)60(94)80-47(23-11-17-29-75)61(95)86-52(34-42(3)4)65(99)91-57(39-110)70(104)83-49(25-13-19-31-77)63(97)88-54(36-44(7)8)67(101)92-58(40-111)71(105)84-50(72(106)107)26-14-20-32-78/h41-58,108-111H,9-40,73-79H2,1-8H3,(H,80,94)(H,81,102)(H,82,103)(H,83,104)(H,84,105)(H,85,93)(H,86,95)(H,87,96)(H,88,97)(H,89,98)(H,90,100)(H,91,99)(H,92,101)(H,106,107)/t45-,46-,47-,48-,49-,50-,51-,52-,53-,54-,55-,56-,57-,58-/m0/s1
InChIKey
MGJTWTNWIHPHBN-QIAHVZGYSA-N
The activity data of This Drug
Standard Type Value Administration times Cell line Cell line ID Ref.
Half Maximal Inhibitory Concentration (IC50) 33.8±0.98 µM 48 h Human umbilical vein endothelial cell N.A. [1]
Half Maximal Inhibitory Concentration (IC50) 36.27±2.7 µM 48 h Huh-7 cell CVCL_0336 [1]
Full Information of The Activity Data of The PDC(s) Related to This Drug
QR-KLU [Investigative]
Revealed Based on the Cell Line Data
Click To Hide/Show 4 Activity Data Related to This Level
Experiment 1 Reporting the Activity Data of This PDC [1]
Indication Hepatocellular carcinoma
Efficacy Data Half Maximal Inhibitory Concentration (IC50) 7.3 ± 0.74 µM
Evaluation Method CCK8 assay
Administration Time 48 h
MOA of PDC
In this paper, we designed a novel PDC which was a conjugation of VEGFR targeting peptide VEGF125-136 and a lytic peptide. This novel peptide conjugate may not only target VEGFR expressed on endothelial cells and inhibit angiogenesis, but also potently inhibit cancer cell proliferation through destroying cell membrane. As its different mechanism from chemotherapeutics, this PDC has a good potential for chemo-resistance cancer therapy. We recognized this peptide could be a potential drug candidate delivered through TAE for HCC therapy. As we know, there has not been a peptide inhibitor used in combination with TACE for HCC therapy. So we developed a VX2 rabbit tumor model and applied this peptide conjugate to TAE for liver cancer therapy, in which this peptide demonstrated better in vivo anti-tumor and anti-angiogenesis effect than conventional TACE. This work may provide an alternative option in combination with TACE for HCC therapy in the future.

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Description
The effect of the peptide conjugate QR-KLU on the proliferation of Huh7 and HUVEC cells was assessed by CCK8 assays. First, we investigated anti-proliferation ability of three peptides QR, KLU and QR-KLU on Huh7 and HUVEC cells with different concentrations. As shown in Fig. Fig.3A,3A, B, cells were treated with QR peptide, KLU peptide, QR-KLU peptide, DOX with different concentration respectively. The inhibition rate increased in a dose-dependent manner in KLU and QR-KLU groups in both cell lines. In HUVEC cells, peptide QR-KLU (IC50 10.7 ± 0.292 uM) showed more potent inhibition effect than KLU (IC50 33.8 ± 0.98 uM), and in Huh7 cells, QR-KLU (IC50 7.3 ± 0.74 uM) also showed more potent anti-tumor effect than KLU (IC50 36.27 ± 2.7 uM). Meanwhile, peptide QR showed negligible toxicity even under 80 uM.

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In Vitro Model Hepatocellular carcinoma Huh-7 cell CVCL_0336
Experiment 2 Reporting the Activity Data of This PDC [1]
Indication Hepatocellular carcinoma
Efficacy Data Half Maximal Inhibitory Concentration (IC50) 10.7 ± 0.292 µM
Evaluation Method CCK8 assay
Administration Time 48 h
MOA of PDC
In this paper, we designed a novel PDC which was a conjugation of VEGFR targeting peptide VEGF125-136 and a lytic peptide. This novel peptide conjugate may not only target VEGFR expressed on endothelial cells and inhibit angiogenesis, but also potently inhibit cancer cell proliferation through destroying cell membrane. As its different mechanism from chemotherapeutics, this PDC has a good potential for chemo-resistance cancer therapy. We recognized this peptide could be a potential drug candidate delivered through TAE for HCC therapy. As we know, there has not been a peptide inhibitor used in combination with TACE for HCC therapy. So we developed a VX2 rabbit tumor model and applied this peptide conjugate to TAE for liver cancer therapy, in which this peptide demonstrated better in vivo anti-tumor and anti-angiogenesis effect than conventional TACE. This work may provide an alternative option in combination with TACE for HCC therapy in the future.

   Click to Show/Hide
Description
The effect of the peptide conjugate QR-KLU on the proliferation of Huh7 and HUVEC cells was assessed by CCK8 assays. First, we investigated anti-proliferation ability of three peptides QR, KLU and QR-KLU on Huh7 and HUVEC cells with different concentrations. As shown in Fig. Fig.3A,3A, B, cells were treated with QR peptide, KLU peptide, QR-KLU peptide, DOX with different concentration respectively. The inhibition rate increased in a dose-dependent manner in KLU and QR-KLU groups in both cell lines. In HUVEC cells, peptide QR-KLU (IC50 10.7 ± 0.292 uM) showed more potent inhibition effect than KLU (IC50 33.8 ± 0.98 uM), and in Huh7 cells, QR-KLU (IC50 7.3 ± 0.74 uM) also showed more potent anti-tumor effect than KLU (IC50 36.27 ± 2.7 uM). Meanwhile, peptide QR showed negligible toxicity even under 80 uM.

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In Vitro Model Normal Human umbilical vein endothelial cell Homo sapiens
Experiment 3 Reporting the Activity Data of This PDC [1]
Indication Hepatocellular carcinoma
Efficacy Data Apoptosis rate 40%
Administration Dosage 10 µM
MOA of PDC
In this paper, we designed a novel PDC which was a conjugation of VEGFR targeting peptide VEGF125-136 and a lytic peptide. This novel peptide conjugate may not only target VEGFR expressed on endothelial cells and inhibit angiogenesis, but also potently inhibit cancer cell proliferation through destroying cell membrane. As its different mechanism from chemotherapeutics, this PDC has a good potential for chemo-resistance cancer therapy. We recognized this peptide could be a potential drug candidate delivered through TAE for HCC therapy. As we know, there has not been a peptide inhibitor used in combination with TACE for HCC therapy. So we developed a VX2 rabbit tumor model and applied this peptide conjugate to TAE for liver cancer therapy, in which this peptide demonstrated better in vivo anti-tumor and anti-angiogenesis effect than conventional TACE. This work may provide an alternative option in combination with TACE for HCC therapy in the future.

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Description
The improved proapoptotic activity of QR-KLU was further confirmed by Annexin V-PI staining through FACS. Viable cells, early apoptotic cells, necrotic cells, late apoptotic cells were represented by Q4, Q3, Q2 and Q1 respectively. Peptide QR-KLU displayed a significant proapoptotic effect under 10 uM with apoptosis rate over 60% in Huh 7 cells and over 40% in HUVEC cells.

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In Vitro Model Normal Human umbilical vein endothelial cell Homo sapiens
Experiment 4 Reporting the Activity Data of This PDC [1]
Indication Hepatocellular carcinoma
Efficacy Data Apoptosis rate 60%
Administration Dosage 10 µM
MOA of PDC
In this paper, we designed a novel PDC which was a conjugation of VEGFR targeting peptide VEGF125-136 and a lytic peptide. This novel peptide conjugate may not only target VEGFR expressed on endothelial cells and inhibit angiogenesis, but also potently inhibit cancer cell proliferation through destroying cell membrane. As its different mechanism from chemotherapeutics, this PDC has a good potential for chemo-resistance cancer therapy. We recognized this peptide could be a potential drug candidate delivered through TAE for HCC therapy. As we know, there has not been a peptide inhibitor used in combination with TACE for HCC therapy. So we developed a VX2 rabbit tumor model and applied this peptide conjugate to TAE for liver cancer therapy, in which this peptide demonstrated better in vivo anti-tumor and anti-angiogenesis effect than conventional TACE. This work may provide an alternative option in combination with TACE for HCC therapy in the future.

   Click to Show/Hide
Description
The improved proapoptotic activity of QR-KLU was further confirmed by Annexin V-PI staining through FACS. Viable cells, early apoptotic cells, necrotic cells, late apoptotic cells were represented by Q4, Q3, Q2 and Q1 respectively. Peptide QR-KLU displayed a significant proapoptotic effect under 10 uM with apoptosis rate over 60% in Huh 7 cells and over 40% in HUVEC cells.

   Click to Show/Hide
In Vitro Model Hepatocellular carcinoma Huh-7 cell CVCL_0336
References
Ref 1 A VEGFR targeting peptide-drug conjugate (PDC) suppresses tumor angiogenesis in a TACE model for hepatocellular carcinoma therapy. Cell Death Discov. 2022 Oct 6;8(1):411. doi: 10.1038/s41420-022-01198-9.