Contents
Academic literature on the topic 'Glipican 3'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Glipican 3.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Glipican 3"
Schaff, Zsuzsa, Ilona Kovalszky, Gábor Lotz, and András Kiss. "Hepatocellular carcinoma – from macroscopy to molecular pathology." Orvosi Hetilap 151, no. 24 (June 1, 2010): 982–89. http://dx.doi.org/10.1556/oh.2010.28875.
Full textDibbern, Marillia, and Larissa Bastos Eloy da Costa. "Estudo do comportamento clínico-patológico de adenomas hepatocelulares correlacionado à expressão imuno-histoquímica de Glutamina-Sintetase, Glipican-3, HSP70, Citoqueratina 7 e Citoqueratina 19." Revista dos Trabalhos de Iniciação Científica da UNICAMP, no. 26 (February 13, 2019). http://dx.doi.org/10.20396/revpibic2620181004.
Full textATAY, Sevcan. "Evaluation of tumoral glypican 3 mRNA level as a diagnostic and prognostic biomarker for hepatitis-b virus-associated hepatocellular carcinoma by an integrative transcriptomic meta-analysis and bioinformatics." Ege Tıp Dergisi, June 13, 2022, 249–58. http://dx.doi.org/10.19161/etd.1127225.
Full textDissertations / Theses on the topic "Glipican 3"
Sales, Caroline Brandi Schlaepfer. "Identificação dos transcritos e proteínas glipicans 1, 3 e 5 em carcinoma escamocelular de boca: associação com moléculas Hedgehog e Vegfa." Centro de Pesquisas Gonçalo Moniz, 2015. https://www.arca.fiocruz.br/handle/icict/9849.
Full textApproved for entry into archive by Ana Maria Fiscina Sampaio (fiscina@bahia.fiocruz.br) on 2015-03-26T19:18:22Z (GMT) No. of bitstreams: 1 Caroline Brandi_S Sales Identificação....pdf: 2182912 bytes, checksum: 259ec8612d135428b26583b6a9303dcc (MD5)
Made available in DSpace on 2015-03-26T19:18:22Z (GMT). No. of bitstreams: 1 Caroline Brandi_S Sales Identificação....pdf: 2182912 bytes, checksum: 259ec8612d135428b26583b6a9303dcc (MD5) Previous issue date: 2015
Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
INTRODUÇÃO: A Via Hedgehog (HH) está ativada em algumas neoplasias humanas, incluindo o Carcinoma Escamocelular de Boca (CEB), o qual corresponde a mais de 95% dos casos diagnosticados na cavidade bucal. Os glipicans (GPC) participam como reguladores desta cascata, atenuando (GPC1 e GPC3) ou regulando positivamente (GPC5) a via HH. OBJETIVO: O objetivo deste trabalho foi avaliar o perfil de expressão dos genes GPC1, 3 e 5, associando-os com genes da via HH (SHH, PTCH1 e SMO) e VEGFA, bem como caracterizar a imunoexpressão das proteínas GPC, em CEB. MATERIAL E MÉTODOS: Trinta e um casos de CEB foram submetidas a reações de qPCR para os genes SHH, PTCH1, SMO, VEGFA, GPC1, 3 e 5. O RNA total foi extraído utilizando uma coluna composta por membrana de silica (Rneasy Mini Kit). O DNA complementar foi obtido com auxílio da enzima Superscript Vilo™. As reações de qPCR foram conduzidas no aparelho ViiA™ 7 Real-Time PCR System utilizando o sistema Taqman, sendo a quantificação relativa avaliada pelo método comparativo de Cq (ΔΔCQ). Vinte e seis CEBs, 9 casos de margens tumorais (MAT) e 4 casos de mucosa bucal não neoplásica (MNN) foram submetidos à reação imuno-histoquímica para as proteínas GPC1, GPC3, GPC5, CD105 e MCM3 utilizando o sistema polimérico AdvanceTM ou LSABTM. As análises das proteínas GPC1, 3 e 5 foram realizadas de acordo com os parâmetros semi-quantitativos descritos por Gurgel et al. (2008). O número de células MCM3 positivas e de vasos/mm² (microdensidade vascular- MDV) foram avaliados em 5 campos, sendo a mediana de e intervalo de confiança utilizados para agrupar os CEBs em alto e baixo perfil proliferativo (AP e BP) e alta e baixa MDV, respectivamente. A análise estatística foi realizada utilizando GraphPad Prism versão 6.03. RESULTADOS: Transcritos do gene GPC1 (26; 83,87%); GPC3 (n=22; 70,97%) e GPC5 (n=15; 48,38%) foram observados em CEBs. SHH RNAm foi detectado em 5 CEBs (16,13%). A maioria dos CEBS apresentou expressão gênica de PTCH1 (n=25; 80.6%), SMO (n=26; 83,87%) e VEGFA (n=28; 90,32%). Correlação positiva forte e estatisticamente significante foi demonstrada para GPC5 e PTCH1 (rs=0,60; p=0,02) e entre PTCH1 e VEGFA (rs=0,69; p=0,0003). Imunomarcação citoplasmática e membranar de GPC1 foi observada principalmente em epitélio de MNN (n=4;100%) e MAT (n=9; 100%), enquanto que uma perda de imunomarcação desta proteína foi detectada no parênquima do CEB. A imunoexpressão da proteína GPC3 estava ausente em MNN (n= 4; 100%) e MAT (n=9; 100%). O GPC3 ocorreu na membrana e citoplasma de células do parênquima, observadas principalmente na periferia das ilhas tumorais, predominando o escore 3+ (n=5; 19.23%) entre os CEBs positivos (n=23; 88,46%). Ausência de imunomarcação de GPC5 foi observada em MNN (n=4; 0%) e apenas 2 espécimes de MAT (n=2; 22,22%) apresentaram baixa imunoexpressão, escore 1+. GPC5 citoplasmático em células tumorais positivas predominou o escore 1+ (n=5; 38.46%). Ao mesmo tempo, GPC5 foi detectado em estroma de 13 (50%) CEBs, especialmente em células endoteliais e semelhantes a fibroblastos. A expressão dos genes avaliados foi similar em tumores com AP e BP, assim como foi independente da MDV. CONCLUSÕES: A correlação entre os transcritos GPC5 e PTCH1, bem como a superexpressão das proteínas GPC5 e GPC3 e perda de imunopositividade de GPC1 são consistentes com a participação destas proteoglicanas como reguladoras da via HH em CEB. O perfil de expressão do gene e proteína GPC1 sugere que este glipican pode participa da biologia tumoral como uma proteína supressora tumoral, enquanto GPC3 e GPC5 participariam oncoproteínas. A presença de GPC5 em estroma tumoral (células endoteliais e fibroblastos) pode estar associada a regulação da via HH neste compartimento do microambiente tumoral.
INTRODUCTION: The Hedgehog pathway is activated in some human neoplasms, including Oral Squamous Cell Carcinoma (OSCC), which account for more than 95% of all oral cancers diagnosed. Glypicans are involved in the regulation of HH pathway through GPC3 e GPC1 downregulation or/and GPC5 upregulation. AIM: The aim of this study was to evaluate the expression profile of GPC1, 3 and 5 genes, correlating to HH and VEGFA gene, even as to characterize the immunoexpression of these proteins at OSCC. MATERIAL AND METHODS: A total of 31 cases of OSCC were assessed by qPCR for the SHH, PTCH1, SMO, VEGFA, GPC1, GPC3 and GPC5 genes. The total RNA were extracted using silica membrane column (Rneasy Mini Kit). Complementary DNA was obtained using of Superscript ™ Vilo enzyme. The qPCR reactions were performed in VIIA™ 7 Real-Time PCR System using the Taqman enzime, and relative quantification (RQ) was evaluated by the comparative method of Cq (ΔΔCQ). Immunohistochemical reactions for GPC1, GPC3, GPC5, MCM3 and CD105 proteins was performed on twenty-six OSCC, 9 cases of tumor margins (TM) and 4 cases of non-neoplastic oral mucosa (NNM) using AdvanceTM or LSABTM system. The analysis of GPC1, 3 and 5 proteins were conducted according to the semi-quantitative parameters described by Gurgel et al. (2008). The number of MCM3 positive cells and vessels//mm² (microvessel density -MVD) were evaluated in 5-matching areas, and the median and confidence interval being used to group the OSCC in high and low proliferative profile (HP and LP) and high and low MDV, respectively. Statistical analysis were carried out with GraphPad Prism v.6.03. RESULTS: Transcripts of GPC1 (26; 83.87%), GPC3 (n=22; 70.97%) and GPC5 (n=15; 48.38%) genes were observed in OSCC. SHH mRNA was detected in 5 OSCC (16:13%), PTCH1 gene in 25 CEBs (80.6%), SMO in 26 (83.87%) and VEGFA in 28 (90.32%). Strong and statistically significant positive correlation was demonstrated for GPC5 and PTCH1 genes (rs=0.60; p= 0.02) and PTCH1 and VEGFA transcripts (rs = 0.69; p = 0.0003). Cytoplasmic and membrane immunostaining of GPC1 was mainly observed in epithelial MNN (n = 5; 100%) and MAT (n=9; 100%), while a reduction of this protein was detected in parenchymal cells. GPC3 protein were absent in MNN (n = 4; 0%) and MAT (n=9; 0%). The GPC3 occurred in the membrane and cytoplasm of parenchymal cells, mainly observed in the periphery of the tumor islands and the 3+ score was predominat (n=3; 11:56%) in positive OSCC. GPC5 positive tumor cells occurred in the cytoplasm, scored 1+ (n = 5; 38.46%). In addition, GPC5 was detected in the stroma of 13 (50%) OSCC, especially in endothelial and fibroblast cells. The gene expression was similar in tumors with HP and LP, and was independent of MDV. CONCLUSIONS: The correlation between the GPC5 and PTCH1 transcripts, as well the overexpression of GPC5 and GPC3 protein and the loss of GPC1 positive cells are consistent with the participation of these proteoglycans as regulators of HH pathway in OSCC. The gene and protein expression profile of GPC3 indicate that this proteins participates in tumor biology as a tumor suppressor protein, while GPC5 and GPC3 function as oncoproteins. The presence of GPC5 in tumor stroma (endothelial cells and fibroblasts) could be associated with the regulation of the HH pathway in this compartment of the tumor microenvironment.
SPAGNUOLO, GAIA. "MARCATORI MOLECOLARI AD IMPATTO TRASLAZIONALE NEL CARCINOMA EPATOCELLULARE." Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/217460.
Full textHepatocellular carcinoma (HCC) is a malignant tumor with high morbidity and mortality worldwide. The treatment is based on early diagnosis and individualized therapy. Today surgery is the primary strategy for patients with HCC and Sorafenib, an anti tyrosine kinase drug, represents the only available drug with proven efficacy. The discovery of new molecular markers (diagnostic, prognostic and predictive) that can be translate in the clinical practice represents the improvement in the management of these patients. The present research is aimed at identifying and validating biological markers related to the early HCC diagnosis and to predict HCC relapse. In addition the individual sensibility to pharmacological treatment in patients with advanced HCC is also evaluated. It has been shown that the accuracy of the HCC early diagnosis on the liver biopsy can be significantly improved by combining histological features with molecular markers, recently proposed and applied in the clinical practice. We have optimized this molecular panel for evaluating the contribution of the clathrin heavy chain (CHC), which is an essential component of intra and extracellular vesicular transport, and previously reported as an up-regulated molecule in malignant liver cells. Using a series of small HCC and control precancerous lesions we tested, by immunohistochemical analysis, whether CHC expression contribute to improve the histopathological diagnostic accuracy. We found that the introduction of CHC increases the sensitivity from 46,8% to 63,8% and maintains an absolute specificity. It is now ascertained that hepatocarcinogenesis is based on alterations in a wide variety of molecular pathways controlling oxidative processes and that cytochromes family plays a protective role in this context. Additionally, gene expression profiles have shown that relapse of HCC is caused by some cytochromes deregulations (i.e. CYP1A2). We verified and validated the CYP1A2 role in relation to relapse of disease by immunohistochemistry and its quantification in non-tumoral liver parenchyma. By investigating a homogeneous series of HCC patients with HCV infection and known follow-up, we demonstrated that the CYP1A2 dosage was associated with the recurrence-free survival (p=0,012) in both univariate and multivariate analyses. Moreover, CYP1A2 expression decreased in non-tumoral hepatocytes, the most susceptible background to “de novo” neoplastic transformation, predicted a faster recurrence of disease. The pharmacological therapy of HCC is currently administered to patients with advanced disease, without any discrimination according to the individual drug susceptibility. There is a compelling clinical need to select patients more suitable to underwent pharmacological treatment, because of the elevated cost. Furthemore, there is no still histological and/or serological biomarker, capable to satisfy these requirements. For this reason, we explored whether miRNA, heterogeneous family of regulatory molecules of translation, can be used as new molecular predictive markers of sensitivity to HCC treatment. For this purpose, starting from a wide pool of miRNA, we progressively selected those deregulated and associated with time to progression of disease after treatment. This research was conducted on liver biopsies sampled before treatment in patients treated with Sorafenib. The selection and validation of miRNA were conducted on two distinct series of patients. Among these the second group of patients has been used as a validation set. We identified a single miRNA, with mechanism of action ad genes target unknown, which when appears overexpressed, by real-time PCR analysis, was strongly and statistically associated with prolonged stabilization of tumor disease (p=0,009). The above findings all suggest that the increasing demand for customized markers to optimized the management of HCC patients can be investigated through the application of relatively simple and reproducibly techniques (including immunohistochemistry and real-time PCR) on both tumoral and non-tumoral tissue. Further validation in prospective studies is required to pursue a personalized dosage of new molecular markers to be introduced in the current clinical practice.