Abstract | BACKGROUND/AIM: MATERIALS AND METHODS:
NNMT expression was examined by western blotting in samples from patients with RCC and in RCC cell lines. Effects of NNMT on cell growth and metabolism were assessed using the Hoechst 33342 reagent assay and Vita-Orange cell viability assay. Incubation experiments were performed to study the influence of methionine and interleukin-6 ( IL6) on expression of NNMT. RESULTS: In patient samples, NNMT was up-regulated depending on the stage of progression. Investigations in an RCC cell culture model showed that after modulation of NNMT expression, cellular metabolism, but not cell growth was affected. This regulatory function was also dependent on the presence of the NNMT precursor substrate methionine and IL6. CONCLUSION: The metabolism-regulatory activity of NNMT depends on the precursor substrate methionine and the presence of IL6. The function of methionine appears to be dependent on the stage of progression, since in individual RCC cell lines, opposing effects on metabolism were demonstrated. This, in turn, reflects the thoroughly complex situation in the clinic.
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Authors | Sina Holstein, Simone Venz, Heike Junker, Reinhard Walther, Matthias B Stope, Uwe Zimmermann |
Journal | Anticancer research
(Anticancer Res)
Vol. 39
Issue 10
Pg. 5427-5436
(Oct 2019)
ISSN: 1791-7530 [Electronic] Greece |
PMID | 31570437
(Publication Type: Journal Article)
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Copyright | Copyright© 2019, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. |
Chemical References |
- Biomarkers, Tumor
- Interleukin-6
- Methionine
- NNMT protein, human
- Nicotinamide N-Methyltransferase
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Topics |
- Biomarkers, Tumor
(metabolism)
- Carcinoma, Renal Cell
(metabolism)
- Cell Line, Tumor
- Cell Proliferation
(physiology)
- Disease Progression
- HEK293 Cells
- Humans
- Interleukin-6
(metabolism)
- Kidney Neoplasms
(metabolism)
- Methionine
(metabolism)
- Nicotinamide N-Methyltransferase
(metabolism)
- Prognosis
- Up-Regulation
(physiology)
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