Increased toxicity of a trinuclear Pt-compound in a human squamous carcinoma cell line by polyamine depletion
Kjellström, Johan LU ; Oredsson, Stina LU and Wennerberg, Johan LU
(2012)
In Cancer Cell International
12.
- Abstract
- Background: Mononuclear platinum anticancer agents hold a pivotal place in the treatment of many forms of cancers, however, there is a potential to improve response to evade resistance development and toxic side effects. BBR3464 is a promising trinuclear platinum anticancer agent, which is a polyamine mimic. The aim was to investigate the influence of polyamine pool reduction on the cytotoxic effects of the trinuclear platinum complex BBR3464 and cisplatin. Polyamine pool reduction was achieved by treating cells with either the polyamine biosynthesis inhibitor alpha-difluoromethylornithine (DFMO) or the polyamine analogue N-1,N-11-diethylnorspermine (DENSPM). Methods: A human squamous cell carcinoma cell line, LU-HNSCC-4, established from... (More)
- Background: Mononuclear platinum anticancer agents hold a pivotal place in the treatment of many forms of cancers, however, there is a potential to improve response to evade resistance development and toxic side effects. BBR3464 is a promising trinuclear platinum anticancer agent, which is a polyamine mimic. The aim was to investigate the influence of polyamine pool reduction on the cytotoxic effects of the trinuclear platinum complex BBR3464 and cisplatin. Polyamine pool reduction was achieved by treating cells with either the polyamine biosynthesis inhibitor alpha-difluoromethylornithine (DFMO) or the polyamine analogue N-1,N-11-diethylnorspermine (DENSPM). Methods: A human squamous cell carcinoma cell line, LU-HNSCC-4, established from a primary head and neck tumour was used to evaluate cellular effects of each drug alone or combinations thereof. High-performance liquid-chromatography was used to quantify intracellular polyamine contents. Inductively coupled mass spectroscopy was used to quantify intracellular platinum uptake. Cells were exposed to DFMO or DENSPM during 48 h at concentrations ranging from 0 to 5 mM or 0 to 10 mu M, respectively. Thereafter, non-treated and treated cells were exposed to cisplatin or BBR3464 during 1 h at concentrations ranging from 0 to 100 mu M. A 96-well assay was used to determine cytotoxicity after five days after treatment. Results: The cytotoxic effect of BBR3464 on LU-HNSCC-4 cells was increased after cells were pre-treated with DENSPM or DFMO, and the interaction was found to be synergistic. In contrast, the interaction between cisplatin and DFMO or DENSPM was near-additive to antagonistic. The intracellular levels of the polyamines putrescine and spermidine were decreased after treatment with DFMO, and treatment with DENSPM resulted in an increase in putrescine level and concomitant decrease in spermidine and spermine levels. The uptake of BBR3464 was significantly increased after pre-treatment of the cells with DFMO, and varied dependent on the concentration of DENSPM. The uptake of cisplatin was unchanged. Conclusions: Taken together, these results demonstrate that combinations of polyamine synthesis inhibitors with BBR3464 appear to be a promising approach to enhance the anticancer activity against HSCC. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3256151
- author
- Kjellström, Johan
LU
; Oredsson, Stina
LU
and Wennerberg, Johan
LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Polyamines, Isobologram, N-11-diethylnorspermine, N-1, alpha-difluoromethylornithine, Head and neck carcinoma, Cisplatin, BBR3464
- in
- Cancer Cell International
- volume
- 12
- publisher
- BioMed Central (BMC)
- external identifiers
-
- wos:000311232400001
- scopus:84861425796
- pmid:22640800
- ISSN
- 1475-2867
- DOI
- 10.1186/1475-2867-12-20
- language
- English
- LU publication?
- yes
- id
- fd9abe01-386b-4629-a676-414399dfff63 (old id 3256151)
- date added to LUP
- 2016-04-01 14:02:50
- date last changed
- 2022-01-27 22:33:32
@article{fd9abe01-386b-4629-a676-414399dfff63,
abstract = {{Background: Mononuclear platinum anticancer agents hold a pivotal place in the treatment of many forms of cancers, however, there is a potential to improve response to evade resistance development and toxic side effects. BBR3464 is a promising trinuclear platinum anticancer agent, which is a polyamine mimic. The aim was to investigate the influence of polyamine pool reduction on the cytotoxic effects of the trinuclear platinum complex BBR3464 and cisplatin. Polyamine pool reduction was achieved by treating cells with either the polyamine biosynthesis inhibitor alpha-difluoromethylornithine (DFMO) or the polyamine analogue N-1,N-11-diethylnorspermine (DENSPM). Methods: A human squamous cell carcinoma cell line, LU-HNSCC-4, established from a primary head and neck tumour was used to evaluate cellular effects of each drug alone or combinations thereof. High-performance liquid-chromatography was used to quantify intracellular polyamine contents. Inductively coupled mass spectroscopy was used to quantify intracellular platinum uptake. Cells were exposed to DFMO or DENSPM during 48 h at concentrations ranging from 0 to 5 mM or 0 to 10 mu M, respectively. Thereafter, non-treated and treated cells were exposed to cisplatin or BBR3464 during 1 h at concentrations ranging from 0 to 100 mu M. A 96-well assay was used to determine cytotoxicity after five days after treatment. Results: The cytotoxic effect of BBR3464 on LU-HNSCC-4 cells was increased after cells were pre-treated with DENSPM or DFMO, and the interaction was found to be synergistic. In contrast, the interaction between cisplatin and DFMO or DENSPM was near-additive to antagonistic. The intracellular levels of the polyamines putrescine and spermidine were decreased after treatment with DFMO, and treatment with DENSPM resulted in an increase in putrescine level and concomitant decrease in spermidine and spermine levels. The uptake of BBR3464 was significantly increased after pre-treatment of the cells with DFMO, and varied dependent on the concentration of DENSPM. The uptake of cisplatin was unchanged. Conclusions: Taken together, these results demonstrate that combinations of polyamine synthesis inhibitors with BBR3464 appear to be a promising approach to enhance the anticancer activity against HSCC.}},
author = {{Kjellström, Johan and Oredsson, Stina and Wennerberg, Johan}},
issn = {{1475-2867}},
keywords = {{Polyamines; Isobologram; N-11-diethylnorspermine; N-1; alpha-difluoromethylornithine; Head and neck carcinoma; Cisplatin; BBR3464}},
language = {{eng}},
publisher = {{BioMed Central (BMC)}},
series = {{Cancer Cell International}},
title = {{Increased toxicity of a trinuclear Pt-compound in a human squamous carcinoma cell line by polyamine depletion}},
url = {{https://lup.lub.lu.se/search/files/3742077/3457921.pdf}},
doi = {{10.1186/1475-2867-12-20}},
volume = {{12}},
year = {{2012}},
}