Abstract:
:Non-steroidal anti-inflammatory drugs (NSAIDs) inhibit proliferation and angiogenesis in colorectal cancer. We examined a possible involvement of store-operated calcium (SOC) entry in human colon carcinoma cells (HRT-18), which require calcium for proliferation. Acetyl-salicylic-acid (ASA), mefenamic acid (MEF) and sulindac sulfide (SUS) inhibited cell proliferation with the following order of potency: SUS > MEF > ASA. SUS but not MEF and ASA induced apoptosis following low-dose treatment. Furthermore, SUS and MEF significantly altered the cell cycle distribution. The ability of NSAIDs to inhibit SOC entry was assessed by measuring the intracellular calcium concentration ([Ca2+]i) in response to calcium store depletion using the endoplasmic calcium ATPase inhibitor thapsigargin. SUS and MEF, but not ASA significantly inhibited SOC entry. A causal link between SOC entry inhibition and anti-proliferative activity was tested using the inorganic SOC entry inhibitor La3+ and the specific organic inhibitor N-1-n-octyl-3,5-bis-(4-pyridyl)triazole (DPT). Both La3+ and DPT inhibited cell proliferation and SOC entry. Analogous to MEF, the anti-proliferative effect of DPT was mediated by cell cycle arrest and not by induction of apoptosis. These data indicate a role of SOC entry for cell proliferation in cancer cells and suggest a novel anti-proliferative NSAID mechanism in addition to its known influence on lipid metabolism.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Weiss H,Amberger A,Widschwendter M,Margreiter R,Ofner D,Dietl Pdoi
10.1002/ijc.1280keywords:
subject
Has Abstractpub_date
2001-06-15 00:00:00pages
877-82issue
6eissn
0020-7136issn
1097-0215pii
10.1002/ijc.1280journal_volume
92pub_type
杂志文章abstract::Approximately 80% of bladder tumors are urothelial superficial papillary carcinomas (USPC). Despite a generally good prognosis, these tumors have a strong propensity to recur and about 1/3 of them compared to disease progression. Histological assessment of these superficial tumors is not sufficiently discriminator in ...
journal_title:International journal of cancer
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abstract::We describe an innovative strategy to quantify risk of cancer associated with varying levels of exposure to chronic parasitic infection through the identification of asymptomatic cases of cholangiocarcinoma within a population-based survey of Opisthorchis viverrini infection. Stool samples from 12,311 adults over age ...
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abstract::Evidence from randomized controlled trials suggests that calcium may protect against recurrence of colorectal adenomas, which could lead to the subsequent prevention of cancer. Yet the trials used only a large single dose and were of small sizes, and thus, knowledge of the dose-response relationship and influence on h...
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abstract::The Japanese have a much lower incidence of nonmelanoma skin cancers (NMSCs) than Caucasians, presumably due in part to their skin type conferring relative protection from ultraviolet light radiation (UVR). To examine the contribution of environmental or endogenous mutagens other than UVR, which are expected to be rel...
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abstract::Hypoxia is known to play important roles in the development and progression of tumors. We previously demonstrated that S100A4, a critical molecule for metastasis, was upregulated in ovarian cancer cells. Therefore, we examined the mechanisms of the upregulation of S100A4 expression in ovarian carcinoma cells, with par...
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abstract::The APTIMA HPV Assay (AHPV) allows detection of 14 high-risk human papillomavirus (HPV) RNA types in cervical specimens. Until present, the assay has been compared to HPV DNA tests only in triage settings. Herein, we compare AHPV with a DNA assay (Hybrid Capture 2; HC2) and liquid-based cytology (LBC; using PreservCyt...
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abstract::Two genome-wide association studies (GWAS) have identified 5p15.33 (TERT-CLPTM1L) as one of the susceptible regions for glioma in European background. A replication research of our group highlighted the association signals in the TERT gene of this region in a Chinese Han population. To comprehensively explore the regi...
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journal_title:International journal of cancer
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abstract::Promoter hypermethylation of various tumor-related genes is extremely frequent in gastric carcinoma (GC) associated with Epstein-Barr virus (EBV). To investigate the significance of the promoter methylation in this type of GC, we examined the methylation densities of the promoter regions of p14ARF and p16INK4A in EBV-...
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:2020-08-15 00:00:00