Peptide name : LRH7-G5

Source/Organism : Synthetic

Linear/Cyclic : Not Available

Chirality : Not Avail

Peptide length: Not available

C-terminal modification: Not Available

N-terminal modification : Not Available

Non-natural peptide information: Not Available

Assay type : MTT assay

Assay time : 48-h

Activity : 60% cell viability at 0.1 μM

Cell line : HCC-1937

Cancer type : Breast Cancer

Other activity : Anticancer

Amino Acid Composition Bar Chart : Not available

Molecular mass : Not available

Aliphatic index : Not available

Instability index : Not available

Hydrophobicity (GRAVY) : Not available

Isoelectric point : Not available

Charge (pH 7) : Not available

Aromaticity : Not available

Molar extinction coefficient (cysteine, cystine): Not available

Hydrophobic/hydrophilic ratio : Not available

hydrophobic moment : Not available

Missing amino acid : Not available

Most occurring amino acid : Not available

Most occurring amino acid frequency : Not available

Least occurring amino acid : Not available

Least occurring amino acid frequency : Not available

3D-structure: Not available

Secondary structure fraction (Helix, Turn, Sheet): Not available

SMILES Notation: Not available

Molecular descriptors: Not available

ADMET properties: Not available

1 : Huang C, et al. A Screened GPR1 Peptide Exerts Antitumor Effects on Triple-Negative Breast Cancer. Mol Ther Oncolytics. 2020; 18:602-612. doi: 10.1016/j.omto.2020.08.013

Paper title : A Screened GPR1 Peptide Exerts Antitumor Effects on Triple-Negative Breast Cancer.

Doi : https://doi.org/10.1016/j.omto.2020.08.013

Abstract : The adipokine chemerin has been considered an important regulator of tumor immune surveillance. Chemerin recruits leukocytes through the receptor CMKLR1 to improve clinical outcomes of tumors and overall patient survival, but the role of GPR1 in tumors has not been widely investigated. Here, we found that GPR1 expression is elevated in breast cancer-especially triple-negative breast cancer (TNBC) tissues and cell lines. Herein, we screened a phage display peptide library to identify LRH7-G5, a peptide antagonist that blocks chemerin/GPR1 signaling. This peptide performed as an anticancer agent to suppress the proliferation of the TNBC cell lines MDA-MB-231 and HCC1937 but has little effect on T47D cells. LRH7-G5 treatment significantly blocked tumor growth in a TNBC cell-bearing orthotopic mouse model. Last, our results showed that this peptide's antitumor role is mediated through the PI3K/AKT signaling pathway. In conclusion, these data collectively suggest that the chemerin receptor GPR1 is a novel target for controlling TNBC progression and establish peptide LRH7-G5 as a new therapeutic agent for suppressing TNBC tumor growth.