Abstract Title:

Chemosensitizing activity of peptide from Lentinus squarrosulus (Mont.) on cisplatin-induced apoptosis in human lung cancer cells.

Abstract Source:

Sci Rep. 2021 Feb 18 ;11(1):4060. Epub 2021 Feb 18. PMID: 33603033

Abstract Author(s):

Hnin Ei Ei Khine, Gea Abigail Uy Ecoy, Sittiruk Roytrakul, Narumon Phaonakrop, Natapol Pornputtapong, Eakachai Prompetchara, Pithi Chanvorachote, Chatchai Chaotham

Article Affiliation:

Hnin Ei Ei Khine


The limitations of cisplatin, a standard chemotherapy for lung cancer, have been documented with serious adverse effects and drug resistance. To address the need for novel therapy, this study firstly reveals the potential of peptide from Lentinus squarrosulus (Mont.) as a chemotherapeutic adjuvant for cisplatin treatment. The purified peptide from L. squarrosulus aqueous extracts was obtained after eluting with 0.4 M NaCl through FPLC equipped with anion exchange column. Preincubation for 24 h with 5 µg/mL of the peptide at prior to treatment with 5 µM cisplatin significantly diminished %cell viability in various human lung cancer cells but not in human dermal papilla and proximal renal cells. Flow cytometry indicated the augmentation of cisplatin-induced apoptosis in lung cancer cells pretreated with peptide from L. squarrosulus. Preculture with the peptide dramatically inhibited colony formation in lung cancer cells derived after cisplatin treatment. Strong suppression on integrin-mediated survival was evidenced with the diminution of integrins (β1, β3, β5, α5, αV) and down-stream signals (p-FAK/FAK, p-Src/Src, p-Akt/Akt) consequence with alteration of p53, Bax, Blc-2 and Mcl-1 in cisplatin-treated lung cancer cells preincubated with peptide from L. squarrosulus. These results supportthe development of L. squarrosulus peptide as a novel combined chemotherapy with cisplatin for lung cancer treatment.

Study Type : In Vitro Study

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