Open Access

Preparation of Nereid oligopeptide and investigation of the mechanism underlying the induction of apoptosis in human lung cancer H1299 cells

  • Authors:
    • Guomei Zhang
    • Han Li
    • Shanshan Liu
    • Mingyang Lu
    • Liang Tang
    • Lihua Sun
  • View Affiliations

  • Published online on: April 14, 2022     https://doi.org/10.3892/mmr.2022.12710
  • Article Number: 194
  • Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

In the present study, oligopeptides from Nereid (Perinereis aibuhitensis) were prepared via enzymatic hydrolysis, and the mechanism underlying the induction of apoptosis in H1299 cells was investigated. According to the analysis of the inhibition rate on proliferation, alkaline protease demonstrated the best enzymatic efficiency. The optimal conditions for hydrolysis were as follows: 50˚C and pH 10 for 6 h; a material‑to‑liquid ratio of 1:1 (g/ml); and addition of 400 U/g enzyme. The hydrolysates were purified using ultrafiltration, anion chromatography, gel filtration chromatography, and high‑performance liquid chromatography. The Nereid oligopeptide (NOP), with a molecular weight of 841 kDa and an amino acid sequence of glutamine‑isoleucine‑asparagine‑glutamine‑histidine‑leucine, was obtained. NOP inhibited the proliferation of H1299 cells in a time‑ and dose‑dependent manner. Morphological changes and apoptosis were also induced by NOP in H1299 cells. The western blot analysis revealed that the B‑cell lymphoma 2/Bcl‑2 associated X (Bcl‑2/Bax) ratio was reduced by 24.7% in the NOP treatment group compared with the control group. The relative expression levels of cleaved caspase‑9 (cleaved‑CASP9) and cleaved caspase‑3 (cleaved‑CASP3) in the NOP treatment group were 2.55‑ and 1.71‑fold higher than those measured in the control group, respectively. These results suggested that NOP exerts antitumor effects by influencing the proliferation and apoptosis of H1299 cells.
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June-2022
Volume 25 Issue 6

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Spandidos Publications style
Zhang G, Li H, Liu S, Lu M, Tang L and Sun L: Preparation of Nereid oligopeptide and investigation of the mechanism underlying the induction of apoptosis in human lung cancer H1299 cells. Mol Med Rep 25: 194, 2022
APA
Zhang, G., Li, H., Liu, S., Lu, M., Tang, L., & Sun, L. (2022). Preparation of Nereid oligopeptide and investigation of the mechanism underlying the induction of apoptosis in human lung cancer H1299 cells. Molecular Medicine Reports, 25, 194. https://doi.org/10.3892/mmr.2022.12710
MLA
Zhang, G., Li, H., Liu, S., Lu, M., Tang, L., Sun, L."Preparation of Nereid oligopeptide and investigation of the mechanism underlying the induction of apoptosis in human lung cancer H1299 cells". Molecular Medicine Reports 25.6 (2022): 194.
Chicago
Zhang, G., Li, H., Liu, S., Lu, M., Tang, L., Sun, L."Preparation of Nereid oligopeptide and investigation of the mechanism underlying the induction of apoptosis in human lung cancer H1299 cells". Molecular Medicine Reports 25, no. 6 (2022): 194. https://doi.org/10.3892/mmr.2022.12710