scholarly journals Diseño, síntesis y estudio de acoplamiento molecular de híbridos de quinazolinona-tiazolidin-4-onas como agentes anticancerígenos

2018 ◽  
Vol 59 (3) ◽  
Author(s):  
Sukanya Nara ◽  
Achaiah Garlapati

Una serie de 2- (4-sustituido fenil) -4-oxoquinazolin-3 (4H) -il) -N- (2- (4-fluorofenil) -4-oxo-5- (arilideno) tiazolidin-3-ilo) benzamidas (VIa-n) han sido sintetizadas por condensación de N- (2- (4-fluorofenil) -4-oxotiazolidin-3-il) -4- (4-oxo-2- (4-fenil sustituido) quinazolin-3 (4H) -il) benzamidas (Va-b) con diversos aldehídos de arilo / heteroarilo usando metodología convencional. Todos los compuestos se cribaron para su actividad anticancerosa in vitro contra las líneas celulares de cáncer de mama humano (MCF-7), líneas celulares de cáncer de pulmón humano (A549) usando el método de ensayo MTT y se usa doxorrubicina como fármaco estándar. El compuesto VId, VIk y VIn mostraron alta potencia contra las líneas celulares A549 con valores IC50 de 0.035 ± 0.002 μM, 0.031 ± 0.002 μM y 0.030 ± 0.002 μM, respectivamente, en comparación con 0.023 ± 0.002 μM mostrada por el estándar. Sin embargo, la actividad más alta contra líneas celulares MCF-7 fue exhibida por Va, Vb, VIk y VIn con valores de CI50 entre 0.040 - 0.050 μM. Todos los compuestos restantes mostraron una actividad anticancerígena moderada contra las líneas celulares MCF-7 y A549. Para comprender las interacciones con el sitio de unión activa del receptor, también se realizó el estudio de acoplamiento molecular.

2021 ◽  
Vol 16 (1) ◽  
pp. 23-27
Author(s):  
Clara Espinoza Silva ◽  
Miguel Quispe Solano ◽  
Nora Véliz Sedano ◽  
Lilian Baños Medina

El mastuerzo (Tropaeolum majus L.) es una planta originaria de Perú, México y partes de América Central; en el Perú, era usada desde tiempos muy antiguos, por nuestros antepasados, para combatir distintas enfermedades. Entre sus componentes se encuentra la glucotropaeolina, que, al ser hidrolizado, forma el bencil isotiocianato (BIT) que fomenta la apoptosis celular. Debido a ello, se tuvo como objetivo; primero, evaluar el efecto citotóxico del isotiocianato de bencilo del mastuerzo expuestas a microgravedad sobre el cultivo in vitro de la línea tumoral MCF-7 de cáncer de mama. Se utilizaron extractos de isotiocianato de bencilo de mastuerzo de la planta cultivada en forma natural (T1) y; la segunda, expuesta a microgravedad en la etapa de germinación (T2), comparándose con el producto comercial (BI), la viabilidad celular se efectuó a través de la técnica del MTT realizándose diluciones de 0, 20, 40, 60, 80 y 100 uM del extracto expuesto al cultivo de células tumorales de tipo MCF-7 cáncer de mama por un tiempo de 12, 24, 48, y 60 horas lecturándose en un lector de placas de ELISA a 570 nm. Se obtuvo una DL50 entre 22,56 ± 3,24 a 19,97 ± 2,52 a las 60 horas, valores similares a las 48 horas comparadas con el control benzil de isiocianato (BI). En conclusión, no se evidencia diferencia en el efecto de la dosis letal media de todos los tratamientos en las 48 y 60 horas de incubación frente al benzil isiocianato (BI). El efecto máximo de inhibición en todas las concentraciones es apreciable a las 60 horas de incubación, afirmándose que no existe una diferencia significativa de sus actividades biológicas entre T1 y T2.


2021 ◽  
Vol 65 (2) ◽  
Author(s):  
Maysoon Zaboon ◽  
Afrodet Saleh ◽  
Hadi Al-Lami

Abstract. The presence of reactive primary amines in the backbone structure of chitosan enables the derivatization with different functional groups and thereby improving and expanding its properties, such as solubility and mucoadhesiveness, for biomedical applications. In this work, chitosan was grafted with different sources of amino acids (Histidine, Aspartic acid, Glutamic acid, Glycine-Aspartic acid, and Glycine-Glutamic acid), Chitosan and its grafted amino acid derivatives were obtained in very good yield, and they were characterized by Fourier-Transform Infrared Spectroscopy (FTIR), and the resulted spectra confirmed the right structures of chitosan and its different synthesized derivatives. The chitosan and its amino acid derivatives were converted to nanoparticles in size by subjecting them to the sonication method. The Scanning Electron Microscope (SEM) was used to determine the shape and size of the prepared polymeric nanoparticles and the average nanoparticle size counted by the Image-J program. The micrographs revealed that the nanoparticles with spherical shapes and with different sizes were gained, but in general, they are less than 100nm in diameters. In vitro cytotoxicity of chitosan and chitosan derivatives prepared NPs were determined as MTT assay, against different three types of human breast cancer cell lines which are BT cell lines, MCF-7 cell lines, and SKBR3 cell lines. The cell proliferation of each type of breast cancer cell line has appeared to a highly significant decrease (p<0.001), with all types of tested NPs polymers in comparison with the positive control samples, through different periods of the experiment (24, 48, and 72 hours).   Resumen. La presencia de aminas primarias reactivas en la estructura del quitosano permite su funcionalización con diferentes grupos funcionales, mejorando y expandiendo sus propiedades, por ejemplo, solubilidad y mucoadhesividad, para aplicaciones biomédicas. En este trabajo se injertó quitosano con diferentes fuentes de aminoácidos (histidina, ácido aspártico, ácido glutámico, glicina-ácido aspártico y glicina-ácido glutámico). Los derivados de quitosano injertados con aminoácidos se obtuvieron con muy buen rendimiento. La caracterización por espectroscopía infrarroja (FTIR) confirmó la funcionalización del quitosano. Después de sonicación y una caracterización por microscopía electrónoica de barrido (SEM), se confirmó que el tamaño del quitosano y sus derivados con aminoácidos pueden clasificarse como nanopartículas. Las micrografías revelaron que las nanopartículas tienen formas esféricas y son de diferentes tamaños, pero en general, son menores a 100 nm de diámetro. La citotoxicidad in vitro de las nanopartículas de quitosano y derivados de quitosano se determinó como ensayos MTT frente a tres tipos diferentes de líneas celulares de cáncer de mama humano, a saber, líneas celulares BT, líneas celulares MCF-7 y líneas celulares SKBR3. La proliferación celular de cada tipo de línea celular de cáncer de mama mostró una disminución significativa (p <0.001), con todos los tipos de polímeros NP probados en comparación con las muestras de control positivo, a lo largo de diferentes períodos del experimento (24, 48, y 72 horas).


2004 ◽  
Author(s):  
◽  
Silvana Andrea Mourón
Keyword(s):  

Los agentes carcinogénicos presentes en el ambiente son los principales agentes causales del desarrollo de la enfermedad neoplásica ya sea por la acción genotóxica directa (iniciador tumoral) o bien por la acción epigenética (promotor tumoral) que estimula la división celular y favorece la expresión del gen mutado antes, debido a la acción del iniciador. Por tanto, el estudio de la capacidad mutagénica y potencialidad carcinogénica de los contaminantes ambientales, podría brindar información para ayudar a dilucidar los mecanismos por los cuales estos compuestos ejercen su poder carcinogénico. Numerosos estudios han asociado la exposición de las sales de cadmio y de arsénico y de los hidrocarburos aromáticos policíclicos con el desarrollo de cáncer de pulmón. Sin embargo, los mecanismos mediante los cuales estas sustancias ejercen su poder carcinogénico no han sido elucidados cabalmente. A tal fin se empleó la línea de fibroblastos de pulmón humano MRC-5, y se evaluaron los efectos genotóxicos de las sales de cadmio (cloruro y sulfato de cadmio), las sales de arsénico (arsenito de sodio y ácido dimetilarsínico) y los hidrocarburos aromáticos policíclos (benzo[a]pireno y dibenzo[a,i]pireno). Se evaluó la capacidad de estos compuestos de inducir intercambios de cromátidas hermanas así como de rupturas de cadena simple de la molécula de ADN y /o la formación de aductos ADN-ADN o ADN-proteína e inducción de apoptosis mediante el empleo del ensayo cometa. Por otra parte, se evaluó la capacidad de inducción de mutaciones puntuales en el exón 1 del protooncogén K-ras y los exones 5 a 8 del gen supresor de tumores p53 mediante el empleo de la técnica de PCR-SSCP. Dado que las mutaciones puntuales en el codón 12 del protooncogén K-ras son las de mayor prevalencia e implicancia funcional del gen se evaluó su presencia mediante la técnica de PCR con enriquecimiento alélico.


2020 ◽  
Vol 21 (14) ◽  
pp. 1528-1538
Author(s):  
Sarah Albogami ◽  
Hadeer Darwish ◽  
Hala M. Abdelmigid ◽  
Saqer Alotaibi ◽  
Ahmed Nour El-Deen ◽  
...  

Background: In Saudi Arabia, the incidence and mortality rates of breast cancer are high. Although current treatments are effective, breast cancer cells develop resistance to these treatments. Numerous studies have demonstrated that active compounds in plant extracts, such as the phenolic compound Rosmarinic Acid (RA), exert anti-cancer effects. Objective: We investigated the anticancer properties of methanolic crude extracts of seedlings and calli of Rosmarinus officinalis and Coleus hybridus, two Lamiaceae species. Methods: MCF-7 human breast cancer cells were treated with methanolic crude extracts obtained from plant calli and seedlings generated in vitro, and cell proliferation was evaluated. Transcriptional profiling of the seedling and callus tissues was also conducted. Results: The mRNA expression levels of RA genes were higher in C. hybridus seedlings than in R. officinalis seedlings, as well as in C. hybridus calli than in R. officinalis calli, except for TAT and C4H. In addition, seedling and callus extracts of both R. officinalis and C. hybridus showed anti-proliferative effects against MCF-7 cells after 24 or 48 h of treatment. Discussion: At a low concentration of 10 μg/mL, C. hybridus calli and seedling extracts showed the most significant anti-proliferative effects after 24 and 48 h of exposure (p < 0.01); controls (doxorubicin) also showed significant inhibition, but lesser than that observed with C. hybridus (p < 0.05). Results with R. officinalis callus and seedling extracts did not significantly differ from those with untreated cells. Conclusion: Methanolic extracts of R. officinalis and C. hybridus are potentially valuable options for breast cancer treatment.


2018 ◽  
Vol 18 (17) ◽  
pp. 1483-1493
Author(s):  
Ricardo Imbroisi Filho ◽  
Daniel T.G. Gonzaga ◽  
Thainá M. Demaria ◽  
João G.B. Leandro ◽  
Dora C.S. Costa ◽  
...  

Background: Cancer is a major cause of death worldwide, despite many different drugs available to treat the disease. This high mortality rate is largely due to the complexity of the disease, which results from several genetic and epigenetic changes. Therefore, researchers are constantly searching for novel drugs that can target different and multiple aspects of cancer. Experimental: After a screening, we selected one novel molecule, out of ninety-four triazole derivatives, that strongly affects the viability and proliferation of the human breast cancer cell line MCF-7, with minimal effects on non-cancer cells. The drug, named DAN94, induced a dose-dependent decrease in MCF-7 cells viability, with an IC50 of 3.2 ± 0.2 µM. Additionally, DAN94 interfered with mitochondria metabolism promoting reactive oxygen species production, triggering apoptosis and arresting the cancer cells on G1/G0 phase of cell cycle, inhibiting cell proliferation. These effects are not observed when the drug was tested in the non-cancer cell line MCF10A. Using a mouse model with xenograft tumor implants, the drug preventing tumor growth presented no toxicity for the animal and without altering biochemical markers of hepatic function. Results and Conclusion: The novel drug DAN94 is selective for cancer cells, targeting the mitochondrial metabolism, which culminates in the cancer cell death. In the end, DAN94 has been shown to be a promising drug for controlling breast cancer with minimal undesirable effects.


2020 ◽  
Vol 17 (2) ◽  
pp. 151-159
Author(s):  
Tran Nguyen Minh An ◽  
Pham Thai Phuong ◽  
Nguyen Minh Quang ◽  
Nguyen Van Son ◽  
Nguyen Van Cuong ◽  
...  

: A series of novel 1,3-thiazole derivatives (5a-i) with a modified phenothiazine moiety were synthesized and tested against cancer cell line MCF-7 for their cytotoxicity. Most of them (5a-i) were less cytotoxic or had no activity against MCF-7 cancer cell line. Material and Methods: The IC50 value of compound (4) was 33.84 μM. The compounds (5a-i) were also evaluated for antimicrobial activities, but no significant activity was observed. The antioxidant activity was conducted for target compounds (5a-i). The IC50 value of compound (5b) was 0.151mM. Results: The total amount of energy, ACE (atomic contact energy), energy of receptor (PDB: 5G5J), and ligand interaction of structure (4) were found to be 22.448 Kcal.mol-1 , -247.68, and -91.91 Kcal.mol-1, respectively. The structure (4) is well binded with the receptor because the values of binding energy, steric energy, and the number of hydrogen bondings are -91.91, 22.448 kcal.mol-1, and 2, respectively. It shows that structure (4) has good cytotoxicity with MCF-7 in vitro. Conclusion: The increasing of docking ability of structures (5a-i) with the receptor is presented in increasing order as (5f)>(5e)>(5g)>(5a)>(5b)>(5d)>(5c)>(5i)>(5h). The structure bearing substitution as thiosemicarbazone (4), nitrogen heterocyclic (5f), halogen (5e), and azide (5g) showed good cytotoxicity activity in vitro.


2020 ◽  
Vol 17 (5) ◽  
pp. 563-573 ◽  
Author(s):  
Chandrakant Dhondiram Pawar ◽  
Dattatraya Navnath Pansare ◽  
Devanand Baburao Shinde

Background: Thiophene ring forms important building block in medicinal chemistry. Literature reveals that thiophene ring in combination with different groups shows different activity. By keeping these things in mind we have designed and synthesized a new series of amide and sulfonamide coupled thiophene. A series of novel substituted 3-sulfamoylbenzo[b]thiophene-4- carboxamide molecules containing sulfonamide and amide group were designed, synthesized and used for anti-proliferative activity study. Methods: The final compounds 16-36 were synthesized by using series of reactions comprising sulfonation, sulfonamide coupling, hydrolysis and peptide coupling. The yields of compounds 16- 36 are in the range of 90-98%. The structures of the synthesized compounds were elucidated and confirmed by 1H NMR, 13C NMR, LCMS and the purity was checked through HPLC analysis. The compounds were further tested for their in vitro anticancer activity against a series of cell lines A549, HeLa, MCF-7 and Du-145. Results: The intermediates 8-13, 15 and final compounds 16-36 were synthesized in good yields. The synthesized compounds were further tested for their anticancer activity and most of compounds showed moderate to good anticancer activity against all four cell lines. Conclusion: We have synthesized 21 compounds and were screened for anticancer activity against MCF-7, HeLa, A-549 and Du-145 cancer cell lines. Most of the compounds were active for tested cell lines with IC50 value in the range of 1.81 to 9.73 μM. The compounds 18, 19, 21, 25, 30, 31 and 33 are most active in cell line data with IC50 value in the range of 1.81 to 2.52 μM.


2020 ◽  
Vol 16 (3) ◽  
pp. 340-349
Author(s):  
Ebrahim S. Moghadam ◽  
Farhad Saravani ◽  
Ernest Hamel ◽  
Zahra Shahsavari ◽  
Mohsen Alipour ◽  
...  

Objective: Several anti-tubulin agents were introduced for the cancer treatment so far. Despite successes in the treatment of cancer, these agents cause toxic side effects, including peripheral neuropathy. Comparing anti-tubulin agents, indibulin seemed to cause minimal peripheral neuropathy, but its poor aqueous solubility and other potential clinical problems have led to its remaining in a preclinical stage. Methods: Herein, indibulin analogues were synthesized and evaluated for their in vitro anti-cancer activity using MTT assay (on the MCF-7, T47-D, MDA-MB231 and NIH-3T3 cell lines), annexin V/PI staining assay, cell cycle analysis, anti-tubulin assay and caspase 3/7 activation assay. Results: One of the compounds, 4a, showed good anti-proliferative activity against MCF-7 cells (IC50: 7.5 μM) and low toxicity on a normal cell line (IC50 > 100 μM). All of the tested compounds showed lower cytotoxicity on normal cell line in comparison to reference compound, indibulin. In the annexin V/PI staining assay, induction of apoptosis in the MCF-7 cell line was observed. Cell cycle analysis illustrated an increasing proportion of cells in the sub-G-1 phase, consistent with an increasing proportion of apoptotic cells. No increase in G2/M cells was observed, consistent with the absence of anti-tubulin activity. A caspase 3/7 assay protocol showed that apoptosis induction by more potent compounds was due to activation of caspase 3. Conclusion: Newly synthesized compounds exerted acceptable anticancer activity and further investigation of current scaffold would be beneficial.


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