Tanhaian A, Mohammadi E, Vakili-Ghartavol R, Saberi MR, Mirzayi M, Jaafari MR.
In silico and
In vitro Investigation of a Likely Pathway for Anti-Cancerous Effect of Thrombocidin-1 as a Novel Anticancer Peptide.
Protein Pept Lett 2021;
27:751-762. [PMID:
32072885 DOI:
10.2174/0929866527666200219115129]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/22/2019] [Accepted: 12/16/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND
Antimicrobial and antifungal activities of Thrombocidin-1 (TC-1) is shown previously, however,.the anti-cancerous feature of this peptide is still uncovered.
OBJECTIVE
The objective is to evaluate anti-cancerous feature of recombinant TC-1.
METHODS
In this study, based on the significant similarity of rTC-1 and IL-8 in case of coding sequence, tertiary structure, and also docking and molecular dynamic simulation (MD) results with CXCR1, a receptor which has positive correlation with different cancers, a likely pathway for anticancerous effect of rTC-1 was proposed. In addition, the coding sequence of TC-1+6xhistidine (rTC-1) was inserted into the pET22b(+) vector and cloned and expressed by E. coli BL21 and finally purified through nickel affinity column. Afterward, the retrieved rTC-1 was used in MTT assay against mouse colon adenocarcinoma, hepatocellular carcinoma, chondrosarcoma, mouse melanoma, and breast adenocarcinoma cell lines to investigate its probable anticancer application.
RESULTS
Docking and MD simulation results showed that rTC-1 and IL-8 share almost the same residues in the interaction with CXCR1 receptor. Besides, the stability of the rTC-1_CXCR11-38 complex was shown during 100ns MD simulation. In addition, the successful expression and purification of rTC-1 depict an 8kD peptide. The IC50 results of MTT assay revealed that rTC-1 has cytotoxic effect on C26-A and SW1353 cancerous cell lines.
CONCLUSION
Therefore, apart from probable anti-cancerous effect of rTC-1 on C26-A and SW1353 cell lines, this peptide may be able to mimic the anti-cancerous pathway of IL-8.
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