Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 20 de 47
Filtrar
1.
Chem Pharm Bull (Tokyo) ; 72(5): 498-506, 2024 May 25.
Artículo en Inglés | MEDLINE | ID: mdl-38735699

RESUMEN

Using (S)-decursinol isolated from root of Angelica gigas Nakai (AGN), we semi-synthesized and evaluated a series of both enantiomerically pure decursin derivatives for their antiproliferative activities against A549 human lung cancer cells. All synthesized compounds showed a broad spectrum of inhibitory activities against the growth of A549 cells. Especially, compound (S)-2d with (E)-(furan-3-yl)acryloyl group showed the most potent activity (IC50: 14.03 µM) against A549 cancer cells as compared with the reference compound, decursin (IC50: 43.55 µM) and its enantiomer, (R)-2d (IC50: 151.59 µM). Western blotting assays indicated that (S)-2d more strongly inhibited Janus kinase 1 (JAK1) and signal transducer and activator of transcription activation 3 (STAT3) phosphorylation than decursin in a dose-dependent manner, while having no effect on CXCR7 overexpression and total STAT3 level. In addition, (S)-2d induced cell cycle arrest at G1 phase and subsequent apoptotic cell death in A549 cancer cells. Our combined analysis of molecular docking studies and biological data suggests that the inhibition of JAK1 with (S)-2d resulted in loss of STAT3 phosphorylation and inhibition of cell growth in A549 cancer cells. These overall results strongly suggest that (S)-2d (MRC-D-004) as a novel JAK1 inhibitor may have therapeutic potential in the treatment of A549 human lung cancers by targeting the JAK1/STAT3 signaling pathway.


Asunto(s)
Apoptosis , Benzopiranos , Butiratos , Proliferación Celular , Ensayos de Selección de Medicamentos Antitumorales , Simulación del Acoplamiento Molecular , Factor de Transcripción STAT3 , Humanos , Proliferación Celular/efectos de los fármacos , Factor de Transcripción STAT3/antagonistas & inhibidores , Factor de Transcripción STAT3/metabolismo , Benzopiranos/farmacología , Benzopiranos/química , Benzopiranos/síntesis química , Butiratos/farmacología , Butiratos/química , Butiratos/síntesis química , Apoptosis/efectos de los fármacos , Células A549 , Estereoisomerismo , Relación Dosis-Respuesta a Droga , Antineoplásicos/farmacología , Antineoplásicos/química , Antineoplásicos/síntesis química , Relación Estructura-Actividad , Janus Quinasa 1/antagonistas & inhibidores , Janus Quinasa 1/metabolismo , Estructura Molecular , Angelica/química , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/síntesis química , Antineoplásicos Fitogénicos/química
2.
J Cell Biochem ; 124(3): 373-381, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36649442

RESUMEN

Esterase D (ESD) is a nonspecific esterase widely distributed in various organisms. ESD plays an important role in regulating cholesterol efflux, inhibiting viral replication and lung cancer growth. MT2A (metallothionein 2A) is the most important isoform of metallothionein (MTs) in human and high expression of MT2A in tumors represents poor prognosis and metastatic behavior. However, there are no reports about the molecular mechanism of ESD in the regulation of tumor metastasis. In this study, we found for the first time that activation ESD promoted its interaction with MT2A and decreased the protein level of MT2A, which resulting in the concentration of free zinc ions up-regulated, and inhibited the migration of A549 lung cancer cells in vitro.


Asunto(s)
Carboxilesterasa , Neoplasias Pulmonares , Metalotioneína , Humanos , Células A549 , Línea Celular Tumoral , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , Metalotioneína/genética , Metalotioneína/metabolismo , Carboxilesterasa/genética , Carboxilesterasa/metabolismo , Movimiento Celular/genética , Movimiento Celular/fisiología
3.
Int J Mol Sci ; 24(18)2023 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-37762406

RESUMEN

The current study describes the encapsulation of hydroxychloroquine, widely used in traditional medicine due to its diverse pharmacological and medicinal uses, in chitosan nanoparticles (CNPs). This work aims to combine the HCQ drug with CS NPs to generate a novel nanocomposite with improved characteristics and bioavailability. HCQ@CS NPs are roughly shaped like roadways and have a smooth surface with an average size of 159.3 ± 7.1 nm, a PDI of 0.224 ± 0.101, and a zeta potential of +46.6 ± 0.8 mV. To aid in the development of pharmaceutical systems for use in cancer therapy, the binding mechanism and affinity of the interaction between HCQ and HCQ@CS NPs and BSA were examined using stopped-flow and other spectroscopic approaches, supplemented by molecular docking analysis. HCQ and HCQ@CS NPs binding with BSA is driven by a ground-state complex formation that may be accompanied by a non-radiative energy transfer process, and binding constants indicate that HCQ@CS NPs-BSA was more stable than HCQ-BSA. The stopped-flow analysis demonstrated that, in addition to increasing BSA affinity, the nanoformulation HCQ@CS NPS changes the binding process and may open new routes for interaction. Docking experiments verified the development of the HCQ-BSA complex, with HCQ binding to site I on the BSA structure, primarily with the amino acids, Thr 578, Gln 579, Gln 525, Tyr 400, and Asn 404. Furthermore, the nanoformulation HCQ@CS NPS not only increased cytotoxicity against the A549 lung cancer cell line (IC50 = 28.57 ± 1.72 µg/mL) compared to HCQ (102.21 ± 0.67 µg/mL), but also exhibited higher antibacterial activity against both Gram-positive and Gram-negative bacteria when compared to HCQ and chloramphenicol, which is in agreement with the binding constants. The nanoformulation developed in this study may offer a viable therapy option for A549 lung cancer.


Asunto(s)
Quitosano , Neoplasias Pulmonares , Nanopartículas , Humanos , Simulación del Acoplamiento Molecular , Quitosano/química , Hidroxicloroquina/farmacología , Liberación de Fármacos , Antibacterianos , Bacterias Gramnegativas/metabolismo , Bacterias Grampositivas/metabolismo , Nanopartículas/química , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/metabolismo
4.
Int J Mol Sci ; 24(2)2023 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-36674990

RESUMEN

Growth factors and cytokines released in the lung cancer microenvironment promote an epithelial-to-mesenchymal transition (EMT) that sustains the progression of neoplastic diseases. TGFß is one of the most powerful inducers of this transition, as it induces overexpression of the fibronectin receptor, αvß6 integrin, in cancer cells which, in turn, is strongly associated with EMT. Thus, αvß6 integrin receptors may be exploited as a target for the selective delivery of anti-tumor agents. We introduce three novel synthesized conjugates, in which a selective αvß6 receptor ligand is linked to nintedanib, a potent kinase inhibitor used to treat advanced adenocarcinoma lung cancer in clinics. The αvß6 integrin ligand directs nintedanib activity to the target cells of the tumor microenvironment, avoiding the onset of negative side effects in normal cells. We found that the three conjugates inhibit the adhesion of cancer cells to fibronectin in a concentration-dependent manner and that αvß6-expressing cells internalized the conjugated compounds, thus permitting nintedanib to inhibit 2D and 3D cancer cell growth and suppress the clonogenic ability of the EMT phenotype as well as intervening in other aspects associated with the EMT transition. These results highlight αvß6 receptors as privileged access points for dual-targeting molecular conjugates engaged in an efficient and precise strategy against non-small cell lung cancer.


Asunto(s)
Antineoplásicos , Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Humanos , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/patología , Factor de Crecimiento Transformador beta/metabolismo , Ligandos , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/patología , Integrinas/metabolismo , Antineoplásicos/farmacología , Transición Epitelial-Mesenquimal , Línea Celular Tumoral , Microambiente Tumoral
5.
Molecules ; 28(4)2023 Feb 10.
Artículo en Inglés | MEDLINE | ID: mdl-36838683

RESUMEN

A dinuclear Pt(II) complex with putrescine as bridging polyamine ligand ([Pt2Put2(NH3)4]Cl4) was synthesized and assessed as to its potential anticancer activity against a human non-small cell lung cancer line (A549), as well as towards non-cancer cells (BEAS-2B). This effect was evaluated through in vitro cytotoxicity assays (MTT and SRB) coupled to microFTIR and microRaman spectroscopies, the former delivering information on growth-inhibiting and cytotoxic abilities while the latter provided very specific information on the metabolic impact of the metal agent (at the sub-cellular level). Regarding cancer cells, a major impact of [Pt2Put2(NH3)4]Cl4 was evidenced on cellular proteins and lipids, as compared to DNA, particularly via the Amide I and Amide II signals. The effect of the chelate on non-malignant cells was lower than on malignant ones, evidencing a promising low toxicity towards healthy cells.


Asunto(s)
Antineoplásicos , Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Humanos , Platino (Metal)/farmacología , Línea Celular Tumoral , Antineoplásicos/farmacología
6.
Molecules ; 29(1)2023 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-38202599

RESUMEN

Novel full-sandwich (η5-Cp)-Ru-paraphenylene complexes with the general formula [(η5-Cp)nRu(η6-L)](PF6)n where n = 1-3 and L = biphenyl, p-terphenyl and p-quaterphenyl, were synthesized and characterized by means of spectroscopic and analytical techniques. The structures of the complexes [(η5-Cp)Ru(η6-biphenyl)](PF6) (1), [(η5-Cp)Ru(η6-terphenyl)](PF6) (3) and [(η5-Cp)2Ru(η6-terphenyl)](PF6)2 (4) was determined by X-ray single crystal methods. The interaction of the complexes [(η5-Cp)Ru(η6-quaterphenyl)]Cl, (6)Cl, and [(η5-Cp)2Ru(η6-quaterphenyl)]Cl2, (7)Cl2, with the DNA duplex d(5'-CGCGAATTCGCG-3')2 was studied using NMR techniques. The results showed that both complexes interacted non-specifically with both the minor and major grooves of the helix. Specifically, (6)Cl exhibited partial binding through intercalation between the T7 and T8 bases of the sequence without disrupting the C-G and A-T hydrogen bonds. Fluorometric determination of the complexes' binding constants revealed a significant influence of the number of connected phenyl rings in the paraphenylene ligand (L) on the binding affinity of their complexes with the d(5'-CGCGAATTCGCG-3')2. The complexes (6)Cl and (7)Cl2 were found to be highly cytotoxic against the A549 lung cancer cell line, with complex (6) being more effective than (7) (IC50 for (6)Cl: 17.45 ± 2.1 µΜ, IC50 for (7)Cl2: 65.83 ± 1.8 µΜ) and with a selectivity index (SI) (SI for (6)Cl: 1.1 and SI for (7)Cl2: 4.8).


Asunto(s)
Antineoplásicos , Compuestos de Bifenilo , Neoplasias Pulmonares , Rutenio , Humanos , Neoplasias Pulmonares/tratamiento farmacológico , Rutenio/farmacología , Células A549 , Antineoplásicos/farmacología , Compuestos Orgánicos
7.
Molecules ; 28(5)2023 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-36903483

RESUMEN

Oral anticancer therapy mostly faces the challenges of low aqueous solubility, poor and irregular absorption from the gastrointestinal tract, food-influenced absorption, high first-pass metabolism, non-targeted delivery, and severe systemic and local adverse effects. Interest has been growing in bioactive self-nanoemulsifying drug delivery systems (bio-SNEDDSs) using lipid-based excipients within nanomedicine. This study aimed to develop novel bio-SNEDDS to deliver antiviral remdesivir and baricitinib for the treatment of breast and lung cancers. Pure natural oils used in bio-SNEDDS were analyzed using GC-MS to examine bioactive constituents. The initial evaluation of bio-SNEDDSs were performed based on self-emulsification assessment, particle size analysis, zeta potential, viscosity measurement, and transmission electron microscopy (TEM). The single and combined anticancer effects of remdesivir and baricitinib in different bio-SNEDDS formulations were investigated in MDA-MB-231 (breast cancer) and A549 (lung cancer) cell lines. The results from the GC-MS analysis of bioactive oils BSO and FSO showed pharmacologically active constituents, such as thymoquinone, isoborneol, paeonol and p-cymenene, and squalene, respectively. The representative F5 bio-SNEDDSs showed relatively uniform, nanosized (247 nm) droplet along with acceptable zeta potential values (+29 mV). The viscosity of the F5 bio-SNEDDS was recorded within 0.69 Cp. The TEM suggested uniform spherical droplets upon aqueous dispersions. Drug-free, remdesivir and baricitinib-loaded bio-SNEDDSs (combined) showed superior anticancer effects with IC50 value that ranged from 1.9-4.2 µg/mL (for breast cancer), 2.4-5.8 µg/mL (for lung cancer), and 3.05-5.44 µg/mL (human fibroblasts cell line). In conclusion, the representative F5 bio-SNEDDS could be a promising candidate for improving the anticancer effect of remdesivir and baricitinib along with their existing antiviral performance in combined dosage form.


Asunto(s)
Neoplasias de la Mama , Neoplasias Pulmonares , Nanopartículas , Humanos , Femenino , Reposicionamiento de Medicamentos , Administración Oral , Emulsiones , Sistemas de Liberación de Medicamentos/métodos , Solubilidad , Aceites , Tamaño de la Partícula , Disponibilidad Biológica , Tensoactivos , Liberación de Fármacos
8.
Drug Dev Res ; 83(8): 1906-1922, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36322473

RESUMEN

Here, we describe the synthesis and biologic activity evaluation of 20 novel synthetic marine sponge alkaloid analogues with 2-amino-1H-imidazol (2-AI) core. Cytotoxicity was tested on murine 4T1 breast cancer, A549 human lung cancer, and HL-60 human myeloid leukemia cells by the resazurin assay. A total of 18 of 20 compounds showed cytotoxic effect on the cancer cell lines with different potential. Viability of healthy human fibroblasts and peripheral blood mononuclear cells upon treatment was less hampered compared to cancer cell lines supporting tumor cell specific cytotoxicity of our compounds. The most cytotoxic compounds resulted the following IC50 values 28: 2.91 µM on HL-60 cells, and 29: 3.1 µM on 4T1 cells. The A549 cells were less sensitive to the treatments with IC50 15 µM for both 28 and 29. Flow cytometry demonstrated the apoptotic effect of the most active seven compounds inducing phosphatidylserine exposure and sub-G1 fragmentation of nuclear DNA. Cell cycle arrest was also observed. Four compounds caused depolarization of the mitochondrial membrane potential as an early event of apoptosis. Two lead compounds inhibited tumor growth in vivo in the 4T1 triple negative breast cancer and A549 human lung adenocarcinoma xenograft models. Novel marine sponge alkaloid analogues are demonstrated as potential anticancer agents for further development.


Asunto(s)
Antineoplásicos , Poríferos , Humanos , Ratones , Animales , Línea Celular Tumoral , Leucocitos Mononucleares , Antineoplásicos/farmacología , Apoptosis , Proliferación Celular
9.
Int J Mol Sci ; 23(6)2022 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-35328401

RESUMEN

A novel biologically active organic ligand L (N'-benzylidenepyrazine-2-carbohydrazonamide) and its three coordination compounds have been synthesized and structurally described. Their physicochemical and biological properties have been thoroughly studied. Cu(II), Zn(II), and Cd(II) complexes have been analyzed by F-AAS spectrometry and elemental analysis. The way of metal-ligand coordination was discussed based on FTIR spectroscopy and UV-VIS-NIR spectrophotometry. The thermal behavior of investigated compounds was studied in the temperature range 25-800 °C. All compounds are stable at room temperature. The complexes decompose in several stages. Magnetic studies revealed strong antiferromagnetic interaction. Their cytotoxic activity against A549 lung cancer cells have been studied with promising results. We have also investigated the biological effect of coating studied complexes with silver nanoparticles. The morphology of the surface was studied using SEM imaging.


Asunto(s)
Antineoplásicos , Complejos de Coordinación , Nanopartículas del Metal , Neoplasias , Antineoplásicos/química , Antineoplásicos/farmacología , Complejos de Coordinación/química , Complejos de Coordinación/farmacología , Ligandos , Plata/farmacología
10.
Molecules ; 27(11)2022 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-35684456

RESUMEN

Lung cancer continues to be the world's leading cause of cancer death and the treatment of non-small cell lung cancer (NSCLC) has attracted much attention. The tubers of Bletilla striata are regarded as "an excellent medicine for lung diseases" and as the first choice to treat several lung diseases. In this study, seventeen phenanthrene derivatives, including two new compounds (1 and 2), were isolated from the tubers of B. striata. Most compounds showed cytotoxicity against A549 cells. An EdU proliferation assay, a cell cycle assay, a wound healing assay, a transwell migration assay, a flow cytometry assay, and a western blot assay were performed to further investigate the effect of compound 1 on A549 cells. The results showed that compound 1 inhibited cell proliferation and migration and promoted cell apoptosis in A549 cells. The mechanisms might correlate with the regulation of the Akt, MEK/ERK, and Bcl-2/Bax signaling pathways. These results suggested that the phenanthrenes of B. striata might be important and effective substances in the treatment of NSCLC.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Orchidaceae , Fenantrenos , Células A549 , Apoptosis , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Proliferación Celular , Humanos , Neoplasias Pulmonares/tratamiento farmacológico , Fenantrenos/farmacología
11.
J Drug Deliv Sci Technol ; 77: 103921, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36338534

RESUMEN

Lung cancer and pandemic acute respiratory disease, COVID-19, are examples of the most worldwide widespread diseases. The aim of the current study is to develop cyclodextrin based nanosponge (CD-NS) for loading the flavonoid drug, quercitrin (QCT). This is to improve its solubility in an attempt to enhance its activity against lung cancer as well as SARS-CoV-2 virus responsible for COVID-19. Preparation of CD-NS was performed by ultrasound-assisted synthesis method. Two CDs were employed, namely, ß cyclodextrin (ßCD) and 2-hydroxy propyl-ß-cyclodextrin (2-HPßCD) that were crosslinked with diphenyl carbonate, one at a time. QCT loaded CD-NS revealed entrapment efficiency and particle size ranged between 94.17 and 99.03% and 97.10-325.90 nm, respectively. QCT loaded 2-HPßCD-NS revealed smaller particle size compared with that of QCT loaded ßCD-NS. Zeta potential absolute values of the prepared formulations were >20 mV, indicating physically stable nanosystems. The selected formulations were investigated by Fourier transform infrared spectroscopy, X-ray powder diffraction and scanning electron microscopy which proved the formation of QCT loaded CD-NS exhibiting porous structure. QCT exhibited partial and complete amorphization in ßCD-NS and 2-HPßCD-NS, respectively. In vitro release revealed an improved release of QCT from CD-NS formulations. The biological activity of free QCT and QCT loaded CD-NS was investigated against lung cancer cell line A549 as well as SARS-CoV-2 virus. The results revealed that IC50 values of free QCT against lung cancer cell line A549 and SARS-CoV-2 were higher than those exhibited by QCT loaded CD-NS by 1.57-5.35 and 5.95-26.95 folds, respectively. QCT loaded 2-HPßCD-NS revealed enhanced in vitro release and superior biological activity compared with QCT loaded ßCD-NS.

12.
Bioorg Chem ; 117: 105449, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34736136

RESUMEN

Lung cancer is one of the most malignant tumors with the highest mortality and morbidity. The tubers of Bletilla striata are known as "an excellent medicine for lung diseases" in traditional Chinese medicine. This study performed a targeted study to explore compounds with anti-lung cancer activity and the molecular mechanisms using A549 cells. Eighteen bibenzyl derivatives, including four new compounds (13, 14, 16, and 18), were isolated from the tubers of B. striata. Analysis of the structure-activity relationship indicated that the cytotoxicity of the bibenzyls against A549 cells increased gradually as the number of the benzyl groups in the structures increased. Bletillain (18), an unusual benzyl polymer, was found to be the most active compound. Further flow cytometric analysis, dual-luciferase assays, real-time PCR assays, and western blot assays revealed that bletillain induced autophagy in A549 cells by regulating the Akt/GSK-3ß/ß-catenin signaling pathway. Beclin 1, LC3, and p62 are downstream autophagy factors of Akt, and Beclin 1 was the key autophagy factor. These results suggested that bibenzyls of B. striata play important roles in the treatment of lung cancer and provided scientific evidence illustrating why the tubers of B. striata are a suitable medicine for the treatment of lung cancer in traditional Chinese medicine.


Asunto(s)
Autofagia/efectos de los fármacos , Descubrimiento de Drogas , Células A549 , Relación Dosis-Respuesta a Droga , Glucógeno Sintasa Quinasa 3 beta/antagonistas & inhibidores , Glucógeno Sintasa Quinasa 3 beta/metabolismo , Humanos , Estructura Molecular , Proteínas Proto-Oncogénicas c-akt/antagonistas & inhibidores , Proteínas Proto-Oncogénicas c-akt/metabolismo , Transducción de Señal/efectos de los fármacos , Relación Estructura-Actividad , Células Tumorales Cultivadas , beta Catenina/antagonistas & inhibidores , beta Catenina/metabolismo
13.
J Microencapsul ; 37(5): 384-393, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32349635

RESUMEN

Aim: The aim of this study was to improve solubility and antitumour ability in vitro of tetrandrine (Tet) via preparing nanosuspensions (NSs).Methods: The Tet-NSs were prepared by wet media milling. The Tet-CCS-NS was prepared with croscarmellose sodium (CCS) as single stabiliser. The Tet-HACC-TPGS-NS was manufactured with D-α-tocopheryl polyethylene glycol 1,000 succinate (TPGS) and hydroponically trimethyl ammonium chloride chitosan (HACC) as combined stabilisers. Physicochemical properties of the NSs such as particle size, surface morphologies, crystallinity and molecular interactions were investigated. In addition, the in vitro dissolution and antitumour activities using A549 human lung cancer cells were evaluated.Results: The mean particle sizes and Zeta potential of freshly prepared Tet-CCS-NS, Tet-HACC-TPGS-NS were 469.1 ± 14nm and 157.3 ± 5nm, -29.4 ± 0.26 mV and 23.3 ± 0.36 mV, respectively. In comparison to pure Tet, the cumulative dissolution of Tet-NSs were increased by 4 ∼ 5 times in 2 h. In vitro antitumour studies on Tet- NSs in A549 cells, the cell survival rate of the Tet-NSs at high concentration (30-50µg/ml) were less than 10% within 48 h. Meanwhile, Tet-NSs were revealed to induce A549 cells apoptosis and promote cell uptake.Conclusion: The present study has proved that the Tet-NSs can increase Tet solubility as well as improve Tet antitumour activity in vitro.


Asunto(s)
Antineoplásicos/farmacología , Bencilisoquinolinas/administración & dosificación , Neoplasias Pulmonares/tratamiento farmacológico , Células A549 , Apoptosis , Rastreo Diferencial de Calorimetría , Carboximetilcelulosa de Sodio/química , Línea Celular Tumoral , Humanos , Nanomedicina/métodos , Tamaño de la Partícula , Compuestos de Amonio Cuaternario/química , Solubilidad , Espectroscopía Infrarroja por Transformada de Fourier , Vitamina E/química , Difracción de Rayos X
14.
J Biol Chem ; 293(36): 14040-14064, 2018 09 07.
Artículo en Inglés | MEDLINE | ID: mdl-30021838

RESUMEN

Monoamine oxidase A (MAO-A) is a mitochondrial flavoenzyme implicated in the pathogenesis of atherosclerosis and inflammation and also in many neurological disorders. MAO-A also has been reported as a potential therapeutic target in prostate cancer. However, the regulatory mechanisms controlling cytokine-induced MAO-A expression in immune or cancer cells remain to be identified. Here, we show that MAO-A expression is co-induced with 15-lipoxygenase (15-LO) in interleukin 13 (IL-13)-activated primary human monocytes and A549 non-small cell lung carcinoma cells. We present evidence that MAO-A gene expression and activity are regulated by signal transducer and activator of transcription 1, 3, and 6 (STAT1, STAT3, and STAT6), early growth response 1 (EGR1), and cAMP-responsive element-binding protein (CREB), the same transcription factors that control IL-13-dependent 15-LO expression. We further established that in both primary monocytes and in A549 cells, IL-13-stimulated MAO-A expression, activity, and function are directly governed by 15-LO. In contrast, IL-13-driven expression and activity of MAO-A was 15-LO-independent in U937 promonocytic cells. Furthermore, we demonstrate that the 15-LO-dependent transcriptional regulation of MAO-A in response to IL-13 stimulation in monocytes and in A549 cells is mediated by peroxisome proliferator-activated receptor γ (PPARγ) and that signal transducer and activator of transcription 6 (STAT6) plays a crucial role in facilitating the transcriptional activity of PPARγ. We further report that the IL-13-STAT6-15-LO-PPARγ axis is critical for MAO-A expression, activity, and function, including migration and reactive oxygen species generation. Altogether, these results have major implications for the resolution of inflammation and indicate that MAO-A may promote metastatic potential in lung cancer cells.


Asunto(s)
Interleucina-13/fisiología , Monoaminooxidasa/metabolismo , Monocitos/metabolismo , Células A549 , Araquidonato 15-Lipooxigenasa/metabolismo , Línea Celular Tumoral , Células Cultivadas , Humanos , Inflamación , Neoplasias Pulmonares/patología , Monoaminooxidasa/fisiología , Metástasis de la Neoplasia , PPAR gamma/metabolismo , Factor de Transcripción STAT6/metabolismo , Células U937
15.
Bioorg Med Chem ; 27(13): 2845-2856, 2019 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-31103402

RESUMEN

Biological activities of a series of fluorescent compounds against human lung cancer cell line A549 were investigated. The results showed that (E)-1,3,3-trimethyl-2-(4-(piperidin-1-yl)styryl)-3H-indol-1-ium iodide (8) and (E)-2-(5,5-dimethyl-3-(4-(piperazin-1-yl)styryl)cyclohex-2-en-1-ylidene) malononitrile (11) could inhibit the growth of A549 cancer cells in a dose and time-dependent manner. Furthermore, compound 8 could trigger autophagy and apoptosis, but not obviously induce necrosis under the stimulatory condition. Therefore, 8 can be used as autophagy activator to investigate the regulatory mechanism of autophagy and may offer a new candidate for the treatment of lung cancer.


Asunto(s)
Células A549/efectos de los fármacos , Autofagia/efectos de los fármacos , Neoplasias Pulmonares/fisiopatología , Humanos , Estructura Molecular
16.
Bioorg Med Chem Lett ; 24(16): 3814-8, 2014 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-25027934

RESUMEN

The new series of pentacyclic triterpenoids reduced lantadene A (3), B (4), and 22ß-hydroxy-3-oxo-olean-12-en-28-oic acid (5) analogs were synthesized and tested in vitro for their NF-κB and IKKß inhibitory potencies and cytotoxicity against A549 lung cancer cells. The lead analog (11) showed sub-micromolar activity against TNF-α induced activation of NF-κB and exhibited inhibition of IKKß in a single-digit micromolar dose. At the same time, 11 showed promising cytotoxicity against A549 lung cancer cells with IC50 of 0.98 µM. The Western blot analysis further showed that the suppression of NF-κB activity by the lead analog 11 was due to the inhibition of IκBα degradation, a natural inhibitor of NF-κB. The physicochemical evaluation demonstrated that the lead analog 11 was stable in the simulated gastric fluid of pH 2, while hydrolyzed at a relatively higher rate in the human blood plasma to release the active parent moieties. Molecular docking analysis showed that 11 was hydrogen bonded with the Arg-31 and Gln-110 residues of the IKKß.


Asunto(s)
Adenocarcinoma/tratamiento farmacológico , Antineoplásicos/síntesis química , Antineoplásicos/farmacología , Neoplasias Pulmonares/tratamiento farmacológico , FN-kappa B/metabolismo , Ácido Oleanólico/análogos & derivados , Factor de Necrosis Tumoral alfa/farmacología , Adenocarcinoma/metabolismo , Adenocarcinoma/patología , Antineoplásicos/química , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Ensayos de Selección de Medicamentos Antitumorales , Humanos , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/patología , Simulación del Acoplamiento Molecular , Estructura Molecular , Ácido Oleanólico/síntesis química , Ácido Oleanólico/química , Ácido Oleanólico/farmacología , Relación Estructura-Actividad
18.
Drug Chem Toxicol ; 37(3): 241-6, 2014 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24160552

RESUMEN

Synthetic phenolic food additives, such as propyl 3,4,5-trihydroxybenzoate (propyl galate; PG), have been used as an antioxidant in the food industry to prevent oils from spoiling. Their toxicity is one of the challengeable issues resulting from the widespread usage of them in food-related industrials. In this study, we investigated the anticell proliferation effects of PG on A549 lung cancer cells. The result showed that PG dose and time dependently decreased the growth of A549 cells with an half-maximal inhibitory concentration of approximately 1 × 10(-3) and 5 × 10(-4)M of PG at 48 and 72 hours, respectively. In addition, DNA strand breaks have been observed through the comet assay technique. Also, morphology of 4',6-diamidino-2-phenylindole (DAPI)-stained cells showed an obvious fragmentation in the chromatin and DNA rings within the nucleus of PG-treated cells, and, finally, flow cytometry analyses of the cells confirmed DAPI staining assay and determined early and late apoptosis in treated cells.


Asunto(s)
Antioxidantes/toxicidad , Apoptosis/efectos de los fármacos , Aditivos Alimentarios/toxicidad , Galato de Propilo/toxicidad , Antioxidantes/administración & dosificación , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Ensayo Cometa , Daño del ADN/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Citometría de Flujo , Aditivos Alimentarios/administración & dosificación , Humanos , Concentración 50 Inhibidora , Neoplasias Pulmonares/metabolismo , Galato de Propilo/administración & dosificación , Factores de Tiempo
19.
Artif Cells Nanomed Biotechnol ; 52(1): 300-308, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38753524

RESUMEN

Lung cancer is a dangerous disease that is lacking in an ideal therapy. Here, we evaluated the anti-lung cancer effect in nude mice of a fully human single-chain antibody (scFv) against the associated antigen 7 transmembrane receptor (Ts7TMR), which is also called G protein-coupled receptor, between A549 cells and Trichinella spiralis (T. spiralis). Our data showed that anti-Ts7TMR scFv could inhibit lung cancer growth in a dose-dependent manner, with a tumour inhibition rate of 59.1%. HE staining did not reveal any obvious tissue damage. Mechanistically, immunohistochemical staining revealed that the scFv down-regulated the expression of PCNA and VEGF in tumour tissues. Overall, this study found that anti-Ts7TMR scFv could inhibit A549 lung cancer growth by suppressing cell proliferation and angiogenesis, which may provide a new strategy for treating lung cancer.


Asunto(s)
Neoplasias Pulmonares , Anticuerpos de Cadena Única , Trichinella spiralis , Animales , Humanos , Ratones , Células A549 , Proliferación Celular/efectos de los fármacos , Neoplasias Pulmonares/inmunología , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/metabolismo , Neoplasias Pulmonares/tratamiento farmacológico , Ratones Desnudos , Neovascularización Patológica/inmunología , Antígeno Nuclear de Célula en Proliferación/inmunología , Antígeno Nuclear de Célula en Proliferación/metabolismo , Anticuerpos de Cadena Única/inmunología , Anticuerpos de Cadena Única/farmacología , Trichinella spiralis/inmunología , Factor A de Crecimiento Endotelial Vascular/inmunología , Factor A de Crecimiento Endotelial Vascular/metabolismo , Ensayos Antitumor por Modelo de Xenoinjerto
20.
Appl Biochem Biotechnol ; 196(8): 5301-5316, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38157154

RESUMEN

Lung malignancy is a major worldwide issue that occurs due to the dysregulation of various growth factors. Lung cancer has no apparent signs in the early stages, which makes it harder to catch it in time and leads to a higher fatality rate. So, the goal of this work was to create and analyze a novel chemical molecule called 4-nitro acetophenone thiosemicarbazone (4-NAPTSc) against the lung cancer cell line A549 and human non-tumorigenic lung epithelial cell line BAES-2B. The ligand was synthesized by refluxing the reaction mixture of 4-nitro acetophenone and thiosemicarbazide and was further characterized by UV, FTIR, and 1H and 13C NMR and Differential Scanning Calorimetry (DSC) study. Cytotoxicity assay/MTT (3-(4,5-dimethylthiazol-2-yl))2,5-diphenyltetrazolium bromide) was used to evaluate the cytotoxicity of the compound. Epidermal growth factor receptors (EGFR), polo-like kinase-1 (PLK1), and vascular endothelial growth factor receptors (VEGFR) were chosen as the target proteins for molecular docking to find potential ligand binding sites and inhibit their function. A novel yellow-colored crystalline solid has been synthesized. 4-NAPTSc had an IC50 of 2.93 µg/mL against the A549 lung cancer cells. When the dosage is increased from 5 to 15 µg/mL along with time, the cell viability falls. Docking results showed that the compound binds with the targeted proteins' amino acid residues, and the likeness profile of the compound is also favorable. This study reveals that the compound has the potential for further investigation and can be used in multitargeted cancer therapies.


Asunto(s)
Acetofenonas , Simulación del Acoplamiento Molecular , Tiosemicarbazonas , Humanos , Tiosemicarbazonas/química , Tiosemicarbazonas/farmacología , Células A549 , Acetofenonas/farmacología , Acetofenonas/química , Antineoplásicos/farmacología , Antineoplásicos/química , Antineoplásicos/síntesis química , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/metabolismo , Receptores ErbB
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda