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1.
Artigo em Inglês | MEDLINE | ID: mdl-38584531

RESUMO

BACKGROUND: Colorectal cancer (CRC) remains a significant contributor to mortality, often exacerbated by metastasis and chemoresistance. Novel therapeutic strategies are imperative to enhance current treatments. The dysregulation of the PI3K/Akt signaling pathway is implicated in CRC progression. This study investigates the therapeutic potential of Wortmannin, combined with 5-fluorouracil (5-FU), to target the PI3K/Akt pathway in CRC. METHODS: Anti-migratory and antiproliferative effects were assessed through wound healing and MTT assays. Apoptosis and cell cycle alterations were evaluated using Annexin V/Propidium Iodide Apoptosis Assay. Wortmannin's impact on the oxidant/antioxidant equilibrium was examined via ROS, SOD, CAT, MDA, and T-SH levels. Downstream target genes of the PI3K/AKT pathway were analyzed at mRNA and protein levels using RTPCR and western blot, respectively. RESULTS: Wortmannin demonstrated a significant inhibitory effect on cell proliferation, modulating survivin, cyclinD1, PI3K, and p-Akt. The PI3K inhibitor attenuated migratory activity, inducing E-cadherin expression. Combined Wortmannin with 5-FU induced apoptosis, increasing cells in sub-G1 via elevated ROS levels. CONCLUSION: This study underscores Wortmannin's potential in inhibiting CRC cell growth and migration through PI3K/Akt pathway modulation. It also highlights its candidacy for further investigation as a promising therapeutic option in colorectal cancer treatment.

2.
Heliyon ; 9(9): e19925, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37809683

RESUMO

The vaccine was first developed in 1796 by a British physician, Edward Jenner, against the smallpox virus. This invention revolutionized medical science and saved lives around the world. The production of effective vaccines requires dominant immune epitopes to elicit a robust immune response. Thus, applying bacteriophages has attracted the attention of many researchers because of their advantages in vaccine design and development. Bacteriophages are not infectious to humans and are unlikely to bind to cellular receptors and activate signaling pathways. Phages could activate both cellular and humoral immunity, which is another goal of an effective vaccine design. Also, phages act as an effective adjuvant, along with the antigens, and induce a robust immune response. Phage-based vaccines can also be administered orally because of their stability in the gastrointestinal tract, in contrast to common vaccination routes, which are intradermal, subcutaneous, or intramuscular. This review presents the current improvements in phage-based vaccines and their applications as preventive or therapeutic vaccines.

3.
Tissue Cell ; 77: 101853, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35803035

RESUMO

BACKGROUND: Colorectal-cancer (CRC) is amongst the most lethal-cancers, mainly due to its metastatic spread and drug chemoresistance. Hence there is a need for new approaches to either increase the efficacy of current therapy or introduce new therapies that have greater efficacy. There is increasing evidence that dysregulation of WNT-signaling-pathway plays an essential role in the development and prognosis of CRC. Here we have investigated the therapeutic potential of targeting the WNT/b-catenin pathway using a novel Wnt/b-catenin inhibitor, PNU-74654, in combination with 5-FU in CRC. METHODS: The anti-proliferative-effect of PNU-74654 was evaluated in two-/three-dimensional cell models. The activity of agents on cell growth, migration, invasion, cell cycle and apoptosis was evaluated by MTT, wound healing assay, invasion, FACS, and annexin V staining, respectively. The oxidant/antioxidant levels were also assessed by determining the level of MDA, SOD, as well as using the DCFH-DA assay. We used a xenograft model of CRC to investigate PNU-74654 activity alone and in combination with 5-FU follow by histological staining and biochemical and gene expression analyses by RT-PCR and western blot. RESULTS: PNU-74654 inhibited cell-growth and synergistically affected the anti-tumor properties of 5-FU via modulation of Cyclin D1 and survivin. This agent inhibited the migration/invasion of colorectal cancer cells via perturbation of E-cadherin. Furthermore, PNU-74654 inhibited the tumor growth, which was more pronounced using the PNU-74654 plus 5-FU combination via induction of reactive oxygen species, down-regulation of SOD and modulation of MCP-1, P53, TNF-α. CONCLUSIONS: Our finding demonstrated that PNU-74654 can target Wnt-pathway, interfere with cell-proliferation, induced-cell death, reduced-migration and interact with 5-FU, supporting further investigations on this therapeutic-approach for colorectal cancer.


Assuntos
Cateninas , Neoplasias Colorretais , Animais , Apoptose , Benzamidas , Cateninas/metabolismo , Cateninas/farmacologia , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/patologia , Fluoruracila/farmacologia , Fluoruracila/uso terapêutico , Humanos , Superóxido Dismutase/metabolismo , Via de Sinalização Wnt , beta Catenina/metabolismo
4.
Rep Biochem Mol Biol ; 10(4): 653-663, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35291603

RESUMO

Background: Cardiovascular disease is one of the most common causes of morbidity and mortality worldwide. The Proline and Serine Rich Coiled-Coil 1 gene in 1p13.3 locus has been reported to be associated with low density lipoprotein cholesterol (LDL-C) and coronary artery disease (CAD). The objective of this study was to investigate the association between the rs599839 polymorphism of the Proline and Serine Rich Coiled-Coil 1 (PSRC1) gene with CVD outcomes in a population sample recruited as part of the Mashhad-Stroke and Heart-Atherosclerotic-Disorders (MASHAD) cohort. Methods: Five hundred and nine individuals who had an average follow-up period of 10 years were enrolled as part of the MASHAD cohort. DNA was extracted and genotyped using the TaqMan-real-time-PCR based method. Results: The study found individuals with GA/GG genotypes were at a higher risk of CVDs (OR= 4.7; 95% CI, 2.5-8.7; p< 0.001) in comparison to those with AA genotype; however, the result was not significant for GG genotype data. Conclusion: The results suggest that the GA/GG genotypes of the PSRC1gene locus were at increased risk of CVD in a representative population-based cohort, demonstrating further functional analysis to discover the value of emerging marker as a risk stratification biomarker to recognize high risk cases.

5.
Toxicol Appl Pharmacol ; 440: 115951, 2022 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-35235860

RESUMO

BACKGROUND: Overexpression of the angiotensin-II receptor and renin-angiotensin system (RAS) has been reported in several malignancies, including colorectal-cancer (CRC), indicating its potential value as a therapeutic target. Here we explored the impact of targeting the RAS using an angiotensin II receptor blocker, valsartan, alone and its combination with Fluorouracil (5-FU) in in vitro and in vivo models of CRC. METHODS: Anti-proliferative activity of valsartan was evaluated in 2-/3-dimensional in vitro and in vivo CRC mouse models. The anti-migratory effects of this agent was assessed by wound-healing assay, while apoptosis was studied using 4',6-diamidino-2-phenylindole or DAPI staining, and staining with Annexin-V-fluorescein isothiocyanate with analysis using FACS. Gene-expression was determined at mRNA and protein levels. We further evaluated the anti-inflammatory properties of valsartan by histological analysis and the measurement of oxidative/antioxidant markers. Gelatin zymography was used to measure matrix metalloproteinase-2 and -9 activity (MMP-2 and 9). RESULTS: Valsartan suppressed CRC cell-growth and synergistically enhanced the anti-tumor-activities of 5-FU by induction of apoptosis, BAX, BCL2, P53 and modulation of the cell cycle. Valsartan inhibited the cell migration by perturbation of MMP2/9. Furthermore, valsartan inhibited tumor-growth, and this was more pronounced when using the valsartan/5-FU combination. The plausible mechanism for this is via the induction of ROS and down-regulation of SOD, thiol/catalase as well as VEGF. Valsartan may protect cells against intestinal fibrosis by modulation of pro-fibrotic and pro-inflammatory factors including interleukins and Col1A1 expression. CONCLUSIONS: Our findings demonstrated that targeting RAS pathway using Valsartan interferes with cell-proliferation, induces apoptosis, reduces migration and synergistically interacts with 5-FU, supporting further studies on this new therapeutic approach for colorectal cancer.


Assuntos
Neoplasias Colorretais , Metaloproteinase 2 da Matriz , Angiotensinas/uso terapêutico , Animais , Neoplasias Colorretais/metabolismo , Fluoruracila/farmacologia , Fluoruracila/uso terapêutico , Camundongos , Valsartana/farmacologia , Valsartana/uso terapêutico
6.
Tissue Cell ; 76: 101755, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35220126

RESUMO

5-Fluorouracil (5-FU) is being used in the treatment of several malignancies, but side effects are often reported and include: diarrhea, vomiting, nausea, poor appetite, watery eyes, and photophobia. We have developed and tested the cytotoxic activity of nanocrystalline powder of γ-alumina (γ-Al2O3) containing 5-FU in two-dimensional and three-dimensional (3D) CRC cell culture. γ-Al2O3 was prepared using a facile sol-gel method. The physicochemical properties of nanoparticles were investigated by Fourier Transform Infrared (FTIR) analysis, Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-ray Analysis (EDXA). Moreover, the particle size was monitored by Transmission Electron Microscopy (TEM). We used MTT and a scratch assay to assess the antiproliferative and anti-migratory of this agent. The effect of γ-Al2O3-5-FU on SOD, MDA, and total-thiols levels were evaluated. We assessed the expression of apoptotic markers in mRNA or proteins by RT-PCR and ELISA respectively. γ-Al2O3-5-FU inhibited cell growth in two-dimensional (2D) and three-dimensional (3D) cell culture and increased apoptosis as detected by DAPI stainning via modulation of caspases, BAx, BCl2 and cyclinD1. γ-Al2O3-5-FU also reduced the migratory activity of CRC cells relative to untreated controls. γ-Al2O3-5-FU increased the level of MDA, while reducing the level of SOD and total-thiols as well as inflamatory markers (e.g., TNF-s and IL-6). Our study demonstrated that γ-Al2O3-5-FU inhibited cell growth and migration, indicating its potential value in the treatment of colorectal cancer.


Assuntos
Neoplasias Colorretais , Nanopartículas , Linhagem Celular Tumoral , Neoplasias Colorretais/genética , Fluoruracila/farmacologia , Fluoruracila/uso terapêutico , Humanos , Compostos de Sulfidrila/uso terapêutico , Superóxido Dismutase
7.
Toxicol Appl Pharmacol ; 423: 115573, 2021 07 15.
Artigo em Inglês | MEDLINE | ID: mdl-33991535

RESUMO

Oxaliplatin is being used in different malignancies and several side effects are reported for patients taking Oxaliplatin, including peripheral neuropathy, nausea and vomiting, diarrhea, mouth sores, low blood counts, fatigue, loss of appetite, etc. Here we have developed a targeted anticancer drug delivery system based on folate-conjugated amine-functionalized UiO-66 for the delivery of oxaliplatin (OX). UiO-66-NH2 (U) and UiO-66-NH2-FA(FU) were pre-functionalized by the incorporation of folic acid (FA) into the structure via coordination of the carboxylate group of FA. The FTIR spectra of drug-loaded U and FU showed the presence of new carboxylic and aliphatic groups of OX and FA. Powder X-ray diffraction (PXRD) patterns were matched accordingly with the reference pattern and FESEM results showed semi-spherical particles (115-128 nm). The evaluated amounts of OX in U and FU were calculated 304.5 and 293 mg/g, respectively. The initial burst release of OX was 15.7% per hour for U(OX) and 10.8% per hour for FU(OX). The final release plateau gives 62.9% and 52.3% for U(OX) and FU(OX). To evaluate the application of the prepared delivery platform, they were tested on colorectal cancer cells (CT-26) via MTT assay, cell migration assay, and spheroid model. IC50 values obtained from MTT assay were 21.38, 95.50, and 18.20 µg/mL for OX, U(OX), and FU(OX), respectively. After three days of treatment, the CT26 spheroids at two doses of 500 and 50 µg/mL of U(OX) and FU(OX) showed volume reduction. Moreover, the oxidative behavior of the prepared systems within the cell was assessed by total thiol, malondialdehyde, and superoxide dismutase activity. The results showed that FU(OX) had higher efficacy in preventing the growth of CT-26 spheroid, and was more effective than oxaliplation in cell migration inhibition, and induced higher oxidative stress and apoptosis.


Assuntos
Neoplasias Colorretais/metabolismo , Sistemas de Liberação de Medicamentos/métodos , Ácido Fólico/metabolismo , Compostos Organometálicos/metabolismo , Oxaliplatina/metabolismo , Ácidos Ftálicos/metabolismo , Aminoácidos/administração & dosagem , Aminoácidos/metabolismo , Animais , Linhagem Celular Tumoral , Neoplasias Colorretais/tratamento farmacológico , Ácido Fólico/administração & dosagem , Camundongos , Camundongos Endogâmicos BALB C , Compostos Organometálicos/administração & dosagem , Oxaliplatina/administração & dosagem , Ácidos Ftálicos/administração & dosagem
8.
EXCLI J ; 19: 1316-1321, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33122978

RESUMO

Colorectal cancer is among the most aggressive tumors, and its development involves an interplay between various genetic and environmental familial risk factors. Several genetic polymorphisms have been reported to be associated with colorectal cancer in recent studies. In this current study, we aimed to evaluate the possible relationship between a CDKN2A/B, single nucleotide polymorphisms (SNP) (rs10811661), with the risk of colorectal cancer. A total of 541 individuals with, or without cancer were recruited. DNA was extracted, and genotyped using a Taq-Man based real-time PCR method. The rs10811661 SNP was associated with an increased risk of colorectal cancer (additive model: OR=3.46, CI= 1.79-6.69, p<0.0001 and recessive model: 5.72, CI= 3.12-10.49, p<0.0001). The distribution of minor alleles in the total population for homozygote allele was 9.2 %, while this was 20.1 % for heterozygotes. In summary, our findings indicate that the rs10811661 polymorphism of the CDKN2A/B gene was strongly related to the occurrence of colorectal cancer suggesting its potential role as a prognostic biomarker for the management of colorectal cancer.

9.
Cell Mol Biol (Noisy-le-grand) ; 66(3): 57-64, 2020 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-32538748

RESUMO

Cardiovascular disease (CVDs) is the leading cause of morbidity and death worldwide. Most genetic variants could be identified by several genome-wide-association-studies (GWAS), including within genes encoding proteins involved in the AKT/PI3K pathways that are related with an increased risk of metabolic syndrome and CVDs. Therefore, due to the importance of genetic variants in the prognosis of diseases, we examined the genetic polymorphism of AKT-rs1130233 located on chromosome 14 with cardiovascular risk factors. In this cross-sectional study, 721 subjects recruited from the Mashhad-Stroke and Heart-Atherosclerotic-Disorders (MASHAD) cohort study. The participants including 257 subjects with metabolic syndrome, 144 subjects with cardiovascular disease and 320 subjects as a control group. Anthropometric, biochemical and demographic information measures were prepared. Dietary assessment was managed by 24h dietary recall. DNA extraction and genotyping were carried out by using the TaqMan real-time-PCR based method. The association of AKT rs1130233 locus with dietary intakes, metabolic syndrome and cardiovascular risk factors were assessed. Data were analyzed by using SPSS 21 software. Frequencies of genotypes AA, AG and GG of the AKT rs1130233 polymorphism were 12.6%, 44.5% and 42.9% in subjects with metabolic syndrome and 9.7%, 39.6% and 50.7% in subjects with cardiovascular disease, respectively. The frequency of allele A and G in cardiovascular disease and metabolic syndrome population were 29.5%, 70.5% and 34.8%, 65.2%, respectively. We have found no significant association between the AKT rs1130233 polymorphism with cardiovascular risk factors and metabolic syndrome. The results of dietary intake showed that the levels of phosphorus intake (p=0.008), calcium intake (p=0.007) and iodine intake (p=0.04) were different in subjects with and without metabolic syndrome. And also, energy intake was significantly different in subjects with cardiovascular disease (p=0.01) compared to the control group. Our findings suggest that AKT rs1130233 was not associated with the risk of metabolic syndrome and cardiovascular disease in the Iranian population. More studies are needed to validate our results. We did functional analysis, due to certify our investigation about value of this genetic biomarker for CVD risk.


Assuntos
Doenças Cardiovasculares/enzimologia , Doenças Cardiovasculares/genética , Loci Gênicos , Predisposição Genética para Doença , Variação Genética , Estudo de Associação Genômica Ampla , Proteínas Proto-Oncogênicas c-akt/genética , Adulto , Dieta , Feminino , Frequência do Gene/genética , Humanos , Masculino , Síndrome Metabólica/genética , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único/genética , Fatores de Risco
10.
IUBMB Life ; 71(12): 1929-1936, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31359579

RESUMO

Colorectal cancer (CRC) is among the leading causes of cancer-related mortality, despite extensive efforts in the identification of new treatment options. Hence, there is a need for the development of novel agents with therapeutic potential in treatment of CRC. Dorsomorphin has demonstrated antiproliferative activity against different malignancies. Here we have investigated the pharmaceutical potential of dorsomorphin in two-dimensional and three-dimensional cell-culture models of CRC. The antiproliferative, antimigratory, apoptotic activity and effect of this agent on cell cycle was evaluated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, wound healing assay, and flow cytometry, respectively, while the expression of genes involved in Wnt/Pi3K pathways was assessed at mRNA and/or proteins by reverse transcription polymerase chain reaction (RT-PCR) or western blot. Dorsomorphin inhibited CRC cell growth by modulating the cyclinD1, surviving and p-Akt. This agent was able to reduce the migratory behaviors of CRC cells, compared to control cells, through perturbation of E-cadherin. Also our data showed that dorsomorphin enhanced the percentage of the cells in sub-G1 and induced apoptosis in both late/early stages, as detected by annexin V. Also the regulatory effect of dorsomorphin on oxidant/antioxidant balance was assessed by cellular reactive oxygen species (ROS) generation. In particular, these data showed that dorsomorphin markedly increased the ROS production in CRC cells. Our finding demonstrated that dorsomorphin antagonizes cell growth and migration, through perturbation of Akt/mTOR/Wnt pathways in CRC, supporting further studies on the therapeutic potential of this novel anticancer agent in treatment of CRC.


Assuntos
Adenilato Quinase/antagonistas & inibidores , Neoplasias Colorretais/tratamento farmacológico , Inibidores de Proteínas Quinases/farmacologia , Pirazóis/farmacologia , Pirimidinas/farmacologia , Animais , Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Humanos , Camundongos , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Serina-Treonina Quinases TOR/metabolismo , Via de Sinalização Wnt/efeitos dos fármacos
11.
J Cell Physiol ; 234(8): 14123-14132, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30633353

RESUMO

The Wnt/ß-catenin pathway is one of the most common pathways dysregulated in breast cancer, and may, therefore, be a potential-therapeutic target. We have investigated the effects of PNU-74654 in breast cancer, as a Wnt/ß-catenin inhibitor, either alone or in combination with fluorouracil (5-FU). PNU-74654 suppressed cell growth at an IC 50 of 122 ± 0.4 µmol/L and synergistically enhanced the antiproliferative activity of gemcitabine by modulating the Wnt pathway. Using a 3D cell culture model, we found that the PNU-74654 caused tumor shrinkage. It reduced the migration of MCF-7 cells (by an 18% reduction in invasive behavior) after the treatment with PNU-74654 through perturbation of E-cadherin and MMP3/9. PNU-74654/5-FU combination enhanced the percentages of cells in S-phase and significantly increased apoptosis. Moreover, our data showed that this agent was able to inhibit the growth of tumor in a xenograft model, although this effect was more pronounced in the animals treated with PNU-74654 plus 5-FU. These data show the ability of PNU-74654 to specifically target Wnt pathway, interfere with cell proliferation, induce-apoptosis, reduce-migration, and synergistically interact with 5-FU, supporting further studies on this novel therapeutic-approach for breast cancer.


Assuntos
Apoptose/efeitos dos fármacos , Benzamidas/farmacologia , Neoplasias da Mama/tratamento farmacológico , Proliferação de Células/efeitos dos fármacos , Trombina/genética , Animais , Benzamidas/uso terapêutico , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Ciclo Celular/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Feminino , Fluoruracila/farmacologia , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Xenoenxertos , Humanos , Células MCF-7 , Metaloproteinase 3 da Matriz/genética , Metaloproteinase 9 da Matriz/genética , Camundongos , Via de Sinalização Wnt/efeitos dos fármacos , beta Catenina/genética
12.
J Cell Biochem ; 120(5): 6962-6971, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30672016

RESUMO

The transforming growth factor-ß (TGF-ß) signaling pathway is one of the important pathways involved in the cancer cell proliferation, invasion, migration, angiogenesis, apoptosis, as well as in metastasis by agitation or invasion of metastasis-related factors, including matrix metalloproteinase (MMP), epithelial-to-mesenchymal transition (EMT), tumor microenvironment (TME), cancer stem cells (CSCs), and cell adhesion molecules (CAMs). These data suggest its potential value as a therapeutic object in the treatment of malignancies including breast cancer. Several pharmacological approaches have been established to suppress TGF-ß pathway; such as vaccines, small molecular inhibitors, antisense oligonucleotides, and monoclonal antibodies. Some of these are now approved by the US Food and Drug Administration for targeting the TGF-ß signaling pathway. This study attempts to summarize the current data about the functions of TGF-ß in cancer cells, and their probable application in the cancer therapy with a specific emphasis on recent preclinical and clinical research in the treatment of breast cancer and its prognostic value.

13.
J Cell Physiol ; 234(2): 1289-1294, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30191988

RESUMO

Cervical cancer (CC) is a common malignancy in women and a major cause of cancer-related mortality globally. Some novel biomarkers may enable the early diagnosis and monitoring of CC. MicroRNAs (miRNAs) are small noncoding RNAs that control gene translation at a posttranscriptional level. Hence the deregulation of these molecules can cause many diseases. There appears to be an association between aberrant miRNA expression and CC, but the molecular mechanisms involved in the development of CC remain unknown. The upregulation of some circulating miRNAs, for example, miRNA-20a, miRNA-203, miRNA-21, miRNA-205, miRNA-218, and miR-485-5, as well as tissue-specific miRNAs, for example, miR-7, miR-10a, miR-17-5p, miR-135b, miR-149, and miR-203 have been found in patients with CC. There is also growing evidence for the importance of miRNAs in the development of drug resistance. This review therefore highlights recently published preclinical and clinical investigation performed on tissue specific and circulating miRNAs, as potential biomarkers for the detection of patients at early stages of CC, in the prediction of prognosis, and monitoring of their response to therapy.


Assuntos
Biomarcadores Tumorais/genética , MicroRNA Circulante/genética , Exossomos/genética , Neoplasias do Colo do Útero/genética , Animais , Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/sangue , MicroRNA Circulante/sangue , Tomada de Decisão Clínica , Resistencia a Medicamentos Antineoplásicos/genética , Exossomos/metabolismo , Feminino , Humanos , Medicina de Precisão , Resultado do Tratamento , Neoplasias do Colo do Útero/sangue , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/tratamento farmacológico
14.
J Cell Physiol ; 234(5): 5519-5523, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30238986

RESUMO

Hypospadias is among the most common congenital malformations in male neonates. It results from abnormal penile and urethral development, but is a multifactorial disorder that is highly heterogeneous, with several genetic and environmental determinants. Monogenic and chromosomal abnormalities are present in approximately 30% of cases, although the genetic factors contributing to hypospadias remain unknown in 70% of cases. While defects in androgen synthesis can lead to this malformation, mutational analyses have shown several genes, such as sonic hedgehog, fibroblast growth factors, bone morphogenetic proteins, homeobox genes, and the Wnt family, are involved in the normal development of male external genitalia. Mutations in the genes of penile development (e.g., HOX, FGF, Shh) and testicular determination (e.g., WT1, SRY), luteinizing hormone receptor, and androgen receptor have also been proposed to be implicated in hypospadias. Here we review the recent advances in this field and discuss the potential genes that could determine the risk of hypospadias.


Assuntos
Marcadores Genéticos , Testes Genéticos , Hipospadia/diagnóstico , Hipospadia/genética , Mutação , Análise Mutacional de DNA , Predisposição Genética para Doença , Humanos , Hipospadia/fisiopatologia , Masculino , Técnicas de Diagnóstico Molecular , Fenótipo , Valor Preditivo dos Testes , Fatores de Risco
15.
J Cell Biochem ; 119(12): 10250-10261, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30129057

RESUMO

Colorectal cancer (CRC) is the third most common cause of cancer-related death, and hence there is a need for the identification of novel-agents to improve the efficacy of existing therapies. There is growing evidence for the antitumor activity of crocin, although its activity and molecular mechanisms in CRC remains to be elucidated. Here we explored the therapeutic application of crocin or its combination with 5-flurouracil in a mouse model of colitis-associated colon cancer. The antiproliferative activity of crocin was assessed in two-dimensional and three-dimensional cell-culture models. The migratory behaviors were determined, while the expression levels of several genes were assessed by quantitative reverse transcriptase polymerase chain reaction/Western blot analysis. We examined the anti-inflammatory properties of crocin by pathological evaluation and disease-activity index as well as oxidative or antioxidant markers: malondialdehyde (MDA) and total-thiols (T-SH) levels and superoxide dismutase (SOD) and catalase (CAT) activity. Crocin suppressed cell-growth and the invasive behavior of CRC cells through modulation of the Wnt-pathway and E-cadherin. Moreover, administration of crocin alone, or in combination with 5-FU dramatically reduced the tumor number and tumor size in both distal/mid-colon followed by reduction in disease-activity index. Crocin also suppressed the colonic inflammation induced by dextran-sulfate-sodium and notably recovered the increased levels of MDA, decreased thiol levels and activity of CAT levels. Crocin was able to ameliorate the severe inflammation with mucosal ulcers and high-grade dysplastic crypts as detected by inflammation score, crypt loss, pathological changes and histology scores. We demonstrated an antitumor activity of crocin in CRC and its potential role in improvement of inflammation with mucosal ulcers and high-grade dysplastic crypts, supporting the desireability of further investigations on the therapeutic potential of this approach in CRC.


Assuntos
Carotenoides/administração & dosagem , Colite/tratamento farmacológico , Neoplasias Colorretais/tratamento farmacológico , Fluoruracila/administração & dosagem , Animais , Antioxidantes/administração & dosagem , Proliferação de Células/efeitos dos fármacos , Colite/induzido quimicamente , Colite/genética , Colite/patologia , Neoplasias Colorretais/induzido quimicamente , Neoplasias Colorretais/genética , Neoplasias Colorretais/patologia , Sulfato de Dextrana/toxicidade , Modelos Animais de Doenças , Sinergismo Farmacológico , Humanos , Malondialdeído/metabolismo , Camundongos , Estresse Oxidativo/efeitos dos fármacos , Fosfatidilinositol 3-Quinases/genética , Superóxido Dismutase/metabolismo , Via de Sinalização Wnt/efeitos dos fármacos
16.
J Cell Physiol ; 233(3): 2193-2201, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28422287

RESUMO

Chemotherapy regimen containing oxaliplatin is often the first-line treatment for patient with advanced colorectal cancer. Oxaliplatin binds to DNA, leading to the formation of crosslinks and bulky adducts. Approximately 50% of patients with CRC benefit from treatment with oxaliplatin. It is possible that genetic variants in biological pathways involved in drug transportation, drug metabolism, DNA damage repair, and cell cycle modulation might affect the activity, or efficacy of oxaliplatin. Because oxaliplatin resistance may be related to these genetic variants and may therefore be an important reason for treatment failure, we have summarized the genetic variations that have been reported to be predictive markers of the response to oxaliplatin based therapy in patients with advanced CRC.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/genética , Resistencia a Medicamentos Antineoplásicos/genética , Marcadores Genéticos/genética , Compostos Organoplatínicos/uso terapêutico , Transporte Biológico/genética , Ciclo Celular/genética , Reparo do DNA/genética , Humanos , Inativação Metabólica/genética , Oxaliplatina , Falha de Tratamento
17.
Curr Pharm Des ; 24(39): 4668-4674, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30636586

RESUMO

Angiogenesis refers to the formation of recent blood vessels, which is one of the characteristics of cancer progression and it has been deliberated as a putative target to the treatment of many kinds of cancers. The VEGF signaling substrate is very important for angiogenesis and is commonly high-regulated in tumors. As a result, this molecule has attracted the attention of most of the researchers to develop antiangiogenic therapies. We have presented that VEGF blockage in neoadjuvant setting via bevacizumab, aflibercept and sunitinib not only has revealed some promising benefits but also has shown a large negative outcome in the adjuvant trials. However, at an advanced stage of tumors, suppression of VEGF alone is inadequate to stop advancement, encouraging drug resistance, and probably enhancing metastasis and invasion in the tumor microenvironment, thereby suggesting the therapeutic potential of targeting angiogenic pathways in gastrointestinal cancers.


Assuntos
Inibidores da Angiogênese/farmacologia , Neoplasias Colorretais/tratamento farmacológico , MicroRNAs/antagonistas & inibidores , Neovascularização Patológica/tratamento farmacológico , Neoplasias Colorretais/metabolismo , Humanos , MicroRNAs/metabolismo , Neovascularização Patológica/metabolismo , Microambiente Tumoral/efeitos dos fármacos
18.
J Cell Biochem ; 118(8): 1979-1983, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28109136

RESUMO

Wnt/ß-catenin pathway is one of the main/frequent dysregulated pathways in several tumor types, including colon cancer. Aberrant activation of this pathway is associated with cell proliferation, invasive behaviors, and cell resistance, suggesting its potential value as a therapeutic target in treatment of CRC. Several agents have been developed for targeting of this pathway (e.g, natural agents: curcumin, 3,3-diindolylmethane, phytoestrogen; Synthetic/small Wnt inhibitors: Rofecoxib; PRI-724, CWP232291; and monoclonal antibody against frizzled receptors, Vanituctumab). This review summarizes the current knowledge about the therapeutic potential of targeting Wnt pathway with particular emphasis on preclinical/clinical studies in treatment of colorectal cancer. J. Cell. Biochem. 118: 1979-1983, 2017. © 2017 Wiley Periodicals, Inc.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Regulação Neoplásica da Expressão Gênica , Terapia de Alvo Molecular , Proteínas Wnt/antagonistas & inibidores , beta Catenina/antagonistas & inibidores , Animais , Compostos Bicíclicos Heterocíclicos com Pontes/uso terapêutico , Proliferação de Células/efeitos dos fármacos , Neoplasias Colorretais/genética , Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Curcumina/uso terapêutico , Humanos , Indóis/uso terapêutico , Lactonas/uso terapêutico , Pirimidinonas/uso terapêutico , Transdução de Sinais , Sulfonas/uso terapêutico , Proteínas Wnt/genética , Proteínas Wnt/metabolismo , beta Catenina/genética , beta Catenina/metabolismo
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