Identification of Further Components of an Anticancer Defense System Composed of Small Molecules Present in the Serum

Dalma Scheffer, Gyula Kulcsár, T. Czömpöly

Research output: Contribution to journalArticle

Abstract

Background: Earlier we assumed that small molecules selectively accumulated in cancer cells might have a role in a defense system capable of killing cancer cells. We reported earlier that an experimentally selected mixture of substances present in the serum ("active mixture," AM) shows a selective toxic effect in vitro and in vivo on various cancer cells. In this study we investigated additional compounds found in the serum to further expand our knowledge of this defense system. Materials and Methods: The cell proliferation was detected by WST-1 assay. The mRNA level of the examined genes was measured by quantitative real-time polymerase chain reaction. Results: We identified 34 additional compounds (l-amino acid metabolites, phenolic acids, d-amino acids, keto acids, etc.), which when applied in a per se nontoxic concentration are able to enhance the effect of AM. The combination of the mixture of these newly identified substances (new mixture, NM) with AM produced a significantly higher cancer cell growth inhibitory effect than NM or AM applied alone on HeLa, MCF-7, PC-3, Caco-2, HepG2, and 4T1 cancer cell lines, and more efficiently induced the expression of certain proapoptotic genes in HeLa cells. Any given combinations of the individual compounds of AM and NM always produced an increased effect compared with AM alone. Conclusions: The newly identified compounds significantly enhance the anticancer effect of AM. The components of AM and NM together may form part of a defense system capable of killing cancer cells and are worthy of further investigation.

Original languageEnglish
Pages (from-to)160-170
Number of pages11
JournalCancer Biotherapy and Radiopharmaceuticals
Volume34
Issue number3
DOIs
Publication statusPublished - Apr 1 2019

Fingerprint

Serum
Neoplasms
Keto Acids
Amino Acids
Poisons
HeLa Cells
Genes
Real-Time Polymerase Chain Reaction
Cell Proliferation
Cell Line
Messenger RNA
Growth

Keywords

  • antitumor defense
  • apoptosis
  • cancer
  • cancer targeting
  • small molecules

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Pharmacology
  • Cancer Research

Cite this

Identification of Further Components of an Anticancer Defense System Composed of Small Molecules Present in the Serum. / Scheffer, Dalma; Kulcsár, Gyula; Czömpöly, T.

In: Cancer Biotherapy and Radiopharmaceuticals, Vol. 34, No. 3, 01.04.2019, p. 160-170.

Research output: Contribution to journalArticle

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