Melatonin inhibits human melanoma cells proliferation and invasion via cell cycle arrest and cytoskeleton remodeling

2020 ◽  
Vol 3 (2) ◽  
pp. 194-209 ◽  
Author(s):  
Ana Carolina Ramos Moreno ◽  
Renata de Freitas Saito ◽  
Manoela Tiago ◽  
Renato Ramos Massaro ◽  
Roberta Liberato Pagni ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Arrest ◽  
Cell Lines ◽  
Melanoma Cell ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Cell Swelling ◽  
Cycle Arrest ◽  
Cytoskeleton Remodeling ◽  
Melanoma Cell Lines

Among skin cancers, melanoma has the highest mortality rate. The heterogeneous genetic melanoma background leads to a tumor-propagating capacity particularly important in maintaining therapeutic resistance, and tumor recurrence. The identification of efficient molecules able to control melanoma progress represents an important opportunity for new therapeutic strategies, particularly in combination with the current standard-of-care treatments. In this context, several studies have reported the antitumor effects of melatonin against different types of cancer, including melanoma. Here, we describe the underlying mechanisms associated with melatonin’s activity in human melanoma cell lines, focusing on cell cycle and cytoskeleton remodeling. Interestingly, while melatonin induced melanocyte DNA replication, melanoma cells exhibited cell cycle arrest in the G1-phase. This phenomenon was associated with cyclin-D1 downregulation or p21 overexpression. The efficacy of melatonin on melanoma cells survival and proliferation was detected using the clonogenic assay, with a decrease in both the number and size of colonies. Additionally, melatonin induced a dramatic cytoskeleton remodeling in all melanoma cell lines, leading to a star-like morphology or cell swelling. The role of melatonin on melanoma cytoskeleton was associated with the actin disruption, with thinning and/or broken actin fibers, and weak and/or loss of paxillin along stress fibers. These data support the observed findings that melatonin impairs melanoma invasion in skin reconstructed models. Together, our results suggest that melatonin could be used to control melanoma growth and support basic and clinical studies on melatonin as a promising immunometabolic adjuvant for melanoma therapy.

scholarly journals Cell cycle arrest and differentiation induction by 5,7-dimethoxycoumarin in melanoma cell lines

2008 ◽  
Author(s):  
Daniela Alesiani ◽  
Rosella Cicconi ◽  
Maurizio Mattei ◽  
Carla Montesano ◽  
Roberto Bei ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Arrest ◽  
Cell Lines ◽  
Melanoma Cell ◽  
Differentiation Induction ◽  
Cycle Arrest ◽  
Melanoma Cell Lines

scholarly journals Synergy, Additivity, and Antagonism between Cisplatin and Selected Coumarins in Human Melanoma Cells

2021 ◽  
Vol 22 (2) ◽  
pp. 537
Author(s):  
Paula Wróblewska-Łuczka ◽  
Aneta Grabarska ◽  
Magdalena Florek-Łuszczki ◽  
Zbigniew Plewa ◽  
Jarogniew J. Łuszczki
Keyword(s):  
Cell Lines ◽  
Melanoma Cell ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Type I ◽  
Antiproliferative Effects ◽  
Isobolographic Analysis ◽  
Natural Substances ◽  
Additive Interactions ◽  
Melanoma Cell Lines

(1) Cisplatin (CDDP) is used in melanoma chemotherapy, but it has many side effects. Hence, the search for natural substances that can reduce the dose of CDDP, and CDDP-related toxicity, is highly desired. Coumarins have many biological properties, including anticancer and antiproliferative effects. (2) An in vitro 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay on two human melanoma cell lines (FM55P and FM55M2) examined the antitumor properties of CDDP and five naturally occurring coumarins (osthole, xanthotoxin, xanthotoxol, isopimpinellin, and imperatorin). The antiproliferative effects produced by combinations of CDDP with the coumarins were assessed using type I isobolographic analysis. (3) The most potent anticancer properties of coumarins were presented by osthole and xanthotoxol. These compounds were characterized by the lowest median inhibitory concentration (IC50) values relative to the FM55P and FM55M2 melanoma cells. Isobolographic analysis showed that for both melanoma cell lines, the combination of CDDP and osthole exerted synergistic and additive interactions, while the combination of CDDP and xanthotoxol exerted additive interactions. Combinations of CDDP with xanthotoxin, isopimpinellin, and imperatorin showed antagonistic and additive interactions in two melanoma cell lines. (4) The combination of CDDP and osthole was characterized by the most desirable synergistic interaction. Isobolographic analysis allows the selection of potential candidates for cancer drugs among natural substances.

AM251 induces apoptosis and G2/M cell cycle arrest in A375 human melanoma cells

2015 ◽  
Vol 26 (7) ◽  
pp. 754-762 ◽  
Author(s):  
Sara Carpi ◽  
Stefano Fogli ◽  
Antonella Romanini ◽  
Mario Pellegrino ◽  
Barbara Adinolfi ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Arrest ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
M Cell ◽  
Cycle Arrest ◽  
Human Melanoma Cells

scholarly journals Identification and characterization of a low-affinity granulocyte- macrophage colony-stimulating factor receptor on primary and cultured human melanoma cells

Blood ◽  
1991 ◽  
Vol 78 (3) ◽  
pp. 609-615 ◽  
Author(s):  
GC Baldwin ◽  
DW Golde ◽  
GF Widhopf ◽  
J Economou ◽  
JC Gasson
Keyword(s):  
Cell Lines ◽  
Melanoma Cell ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Colony Stimulating Factor ◽  
Gm Csf ◽  
Macrophage Colony Stimulating Factor ◽  
Macrophage Colony ◽  
Stimulating Factor ◽  
Melanoma Cell Lines

Abstract Hematopoietic growth factor receptors are present on cells of normal nonhematopoietic tissues such as endothelium and placenta. We previously demonstrated functional human granulocyte-macrophage colony- stimulating factor (GM-CSF) receptors on small cell carcinoma of the lung cell lines, and others have reported that certain solid tumor cell lines respond to GM-CSF in clonogenic assays. In the current study, we examine human melanoma cell lines and fresh specimens of melanoma to determine whether they have functional GM-CSF receptors. Scatchard analyses of 125I-GM-CSF equilibrium binding to melanoma cell lines showed a mean of 542 +/- 67 sites per cell with a kd of 0.72 +/- 0.14 nmol/L. Cross-linking studies in the melanoma cell line, M14, showed a major GM-CSF receptor species of 84,000 daltons. Under the conditions tested, the M14 cells did not have a proliferative response to GM-CSF in vitro, nor was any induction of primary response genes detected by Northern analysis in response to GM-CSF. Studies to determine internal translocation of the receptor-ligand complex indicated less than 10% of the 125I-GM-CSF internalized was specifically bound to receptors. Primary melanoma cells from five surgical specimens had GM-CSF receptors; Scatchard analysis was performed on one sample, showing 555 sites/cell with a kd of 0.23 nmol/L. These results indicate that human tumor cells may express a low-affinity GM-CSF receptor protein that localizes to the cell surface and binds ligand, but lacks functional components or accessory factors needed to transduce a signal.

Effect of small inhibitors of nuclear export (SINE) on growth inhibition and apoptosis of human melanoma cells.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e13549-e13549
Author(s):  
Gregory B. Lesinski ◽  
Jennifer Yang ◽  
Matthew A Bill ◽  
Yosef Landesman ◽  
Sharon Shacham ◽  
...  
Keyword(s):  
Tumor Suppressor ◽  
Cell Lines ◽  
Melanoma Cell ◽  
Nuclear Export ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Human Melanoma Cell ◽  
Nuclear Accumulation ◽  
Dependent Manner ◽  
Melanoma Cell Lines

e13549 Background: Inhibition of nuclear export can promote re-activation of tumor suppressor pathways. CRM1 (chromosomal regional maintenance 1) or XPO1 (exportin 1) is the major protein that mediates nuclear export. We hypothesized that CRM1 mediated nuclear export represents a novel therapeutic target that can be manipulated to inhibit melanoma cell survival. Methods: The growth inhibitory and pro-apoptotic effects of KPT-185, KPT-276 and KPT-330, small molecules selective inhibitor of nuclear export (SINE) were evaluated in human melanoma cell lines using an MTT assay and Annexin V/PI staining, respectively. Fluorescence microscopy and immunoblots were used to assess nuclear accumulation of tumor suppressor proteins. The trans-isomer of KPT-185 and DMSO (vehicle) were used as a negative controls in all assays. The pharmacokinetic (PK) profile of all compounds was evaluated in mice. Results: CRM1 protein was highly expressed in human melanoma cell lines with diverse molecular profiles (i.e., B-Raf, NRAS, p53). KPT-SINE inhibited melanoma cell growth in a concentration-dependent manner and induced apoptosis at nanomolar concentrations. Importantly, there was no evidence that B-Raf V600 mutational status influenced melanoma cell response to these agents. Nuclear accumulation and/or induction of p53, p21, FOXO3a, STAT1 and BAD, and reduction of MCL-1 occurred in melanoma cells at time points prior to apoptosis as shown by increase in cleaved PARP and caspase 3 levels. PK studies were conducted in mice following oral administration of 10 mg/kg, to guide drug selection for our ongoing efficacy studies in murine melanoma models. KPT-185 showed limited bioavailability and systemic exposure, while KPT-276 and KPT-330 showed >50% bioavailability reaching Cmax >5µM. Conclusions: This study represents the first report of CRM1 inhibition in melanoma. These data indicate that the novel SINE compounds can effectively inhibit CRM1-mediated nuclear export and induce apoptosis in melanoma cells. KPT-330 is currently under development as orally bioavailable, small molecule inhibitors for a human clinical trial.

scholarly journals HIV Protease Inhibitor Nelfinavir Inhibits Growth of Human Melanoma Cells by Induction of Cell Cycle Arrest

2007 ◽  
Vol 67 (3) ◽  
pp. 1221-1227 ◽  
Author(s):  
Wei Jiang ◽  
Peter J. Mikochik ◽  
Jin H. Ra ◽  
Hanqin Lei ◽  
Keith T. Flaherty ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Protease Inhibitor ◽  
Cell Cycle Arrest ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Hiv Protease ◽  
Hiv Protease Inhibitor ◽  
Cycle Arrest ◽  
Human Melanoma Cells

Recombinant arginase as a novel anti-melanoma agent

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 12032-12032 ◽  
Author(s):  
E. C. Hsueh ◽  
S. Knebel ◽  
I. Collier ◽  
M. Kadze ◽  
C. Hsueh ◽  
...  
Keyword(s):  
Real Time ◽  
Cell Lines ◽  
Melanoma Cell ◽  
Large Scale ◽  
Melanoma Cells ◽  
Human Melanoma ◽  
Subtilis Strain ◽  
Argininosuccinate Synthetase ◽  
Melanoma Cell Lines

12032 Background: BCT-100 is a recombinant arginase comprised of 329 amino acid residues. Arginase converts arginine to urea and ornithine. Previous studies suggested that melanoma cells were auxotrophic for arginine due to absence of argininosuccinate synthetase (ASS) expression. Thus, we hypothesized that recombinant arginase, BCT-100, is cytotoxic to human melanoma cells and its cytotoxicity correlates with absence of ASS expression. Methods: BCT-100 pegylated recombinant human arginase was manufactured by large scale fermentation of a recombinant B. subtilis strain LLC101 encoded with a human arginase gene. Following fermentation, the recombinant protein was extracted, purified, pegylated, and ultra-dialyzed. Ten established human melanoma cell lines were used. Cells were grown to 90% confluence, harvested, and plated at 104 cells per well in a 96-well plate and co-cultured with increasing concentrations of pegylated BCT-100 for 72 hours. CellTiter 96 Aqueous Non-radioactive Cell Proliferation Assay (Promega, Madison, WI) was used to measure percent viability, with absorbances measured at 490 nm. Total cellular RNA was isolated from established melanoma cell lines converted to cDNA at a concentration of 5 ng/ul. Quantitative real time polymerase chain reaction was performed on a 7300 Real Time PCR System, using Gene Expression Assays for ASS and GAPDH (Applied Biosystems). 10,000 fold standard curves were generated for all samples using GAPDH expression. Results: All ten cell lines demonstrated decreased viability as concentrations of BCT-100 increased. Average IC50 value was 0.11 IU/ml. Eight of the 10 cells lines have IC50 values < 0.1 IU/ml. Of the 8 cell lines with IC50< 0.1 IU/ml, all of them have low or undetectable ASS expression using quantitative RT-PCR. Of the 2cell lines with IC50 > 0.1 IU/ml, ASS expression was detected in 1 of 2. Conclusions: Arginine depletion with recombinant arginase, BCT-100, was cytotoxic to melanoma cells in vitro. The cytotoxic effect of BCT-100 on melanoma cells correlated with expression of argininosuccinate synthetase. BCT-100 is a promising novel agent for treatment of melanoma. Further in vivo experiment with BCT-100 is ongoing. [Table: see text]

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