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Wyszukujesz frazę "survivin" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Reversal of drug resistance by silencing Survivin gene expression in acute myeloid leukemia cells
Autorzy:
Wu, Yao-Hui
You, Yong
Chen, Zhi-Chao
Zou, Ping
Powiązania:
https://bibliotekanauki.pl/articles/1040668.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
chemotherapeutic resistance
Survivin
acute myeloid leukemia
shRNA
apoptosis
Opis:
The role of Survivin in the pathogenesis of leukemia was explored in order to discover the effective avenues for gene therapy. Most primary leukemia cells isolated from patients as well as three leukemia cell lines (HL-60, K562, and U937) all expressed Survivin gene. To investigate the relationship between Survivin and chemotherapeutic resistance, HL-60 cells were treated with daunorubicin (DNR), mitoxantrone (MIT) or arsenious oxide (As2O3), and it was found that after 24 h the level of Survivin mRNA was decreased by 9.7%, 41.0% and 27.5%, respectively. At 72 h, the level of Survivin mRNA was increased by 21.2% and 65.2% in HL-60 cells treated with DNR or MIT, but decreased by 33.2% in those treated with As2O3 as compared with that in the cells treated for 24 h. These results showed that DNR and MIT could initally decrease the expression of Survivin and then increase it, but As2O3 could decrease the Survivin expression continually. Furthermore, shRNA plasmids targeting the Survivin gene (pEGFP-Survivin), which can silence the expression of Survivin with a high specificity, were constructed. pEGFP-Survivin and pEGFP-H1 were transfected into HL-60 cells via electroporation and selected by G418, and HL-60/Survivin and HL-60/EGFP cells were obtained. After treatment with DNR, the cell survival rate and IC50 of DNR in HL-60/Survivin cells were decreased substantially as compared with those of HL-60/EGFP and HL-60 cells (IC50 of DNR: 18.3 ± 2.45 vs 40.8 ± 6.37 and 39.2 ± 5.91 ng/ml, respectively), and the apoptosis rate was elevated ((84.3 ± 19.7)% vs (45.8 ± 13.8)% and (50.9 ± 12.4)%, respectively). These results suggest that shRNA can down-regulate the expression of Survivin in HL-60 cells substantially and improve their sensitivity to DNR. They also further explain the pathogenesis of leukemia drug resistance and provide new theory in the design of clinical therapies.
Źródło:
Acta Biochimica Polonica; 2008, 55, 4; 673-680
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vascular Endothelial Growth Factor and Survivin Immunostaining in Gastric Adenocarcinoma
Autorzy:
Bury, Jarosław
Szumiło, Justyna
Dąbrowski, Andrzej
Ciechański, Aleksander
Śliwińska, Justyna
Wallner, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1396680.pdf
Data publikacji:
2012-07-01
Wydawca:
Index Copernicus International
Tematy:
vascular endothelial growth factor
VEGF
survivin
adenocarcinoma
stomach
survival
Opis:
Two molecules - vascular endothelial growth factor involved in new vessels formation and survivin - antiapoptotic protein, reported to be associated with worse prognosis in various malignancies have been chosen for the study. Both are potential target for novel therapiesThe aim of the study was to determine the immunostaining of VEGF and survivin in gastric carcinoma and to analyse their relationship to the selected clinicopathological features and survival.Material and methods. Formalin-fixed, paraffin-embedded sections from 41 gastric adenocarcinomas were used for immunohistochemical reaction with monoclonal antibodies against vascular endothelial growth factor and survivin. The results were compared with selected clinicopathological features and survival.Results. Positive immunohistochemical reaction for vascular endothelial growth factor and survivin was revealed in 24 (58,53%) and 30 (73,17%), gastric carcinomas respectively. Vascular endothelial growth factor-negative gastric carcinomas were significantly more common in cases without metastases to regional lymph nodes and distant organs and in less advanced cases. Similar, distant metastases were also statistically less common in survivin-negative carcinomas. The differences in immunohistochemical reactions for survivin between less and more advanced cases almost reach statistical significance. The only factors significantly influenced 1, 2 and 3-year survival were vascular endothelial growth factor and survivin status. Statistically significant higher percentage of survival was noted in patients with vascular endothelial growth factor- and survivin-negative tumors.Conclusions. It seems that vascular endothelial growth factor and survivin play role in local invasion and spread of gastric adenocarcinoma and negatively influences survival. However, further studies are required to assess their true usefulness in the clinical practice.
Źródło:
Polish Journal of Surgery; 2012, 84, 7; 341-347
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane czynniki molekularne związane z przerzutowaniem raka jajnika
Selected molecular factors associated with metastases of ovarian cancer
Autorzy:
Markowska, Anna
Lubin, Jolanta
Jaszczyńska-Nowinka, Karolina
Markowska, Janina
Powiązania:
https://bibliotekanauki.pl/articles/1031182.pdf
Data publikacji:
2012
Wydawca:
Medical Communications
Tematy:
AEG-1 gene
E-cadherin
HER2 gene
Met gene
SDF-1 gene
claudins 3 and 4
clusterin
gen AEG-1
gen HER2
gen Met
gen SDF-1
kadheryna-E
kalikreiny
kallikreins
kisspeptin
kisspeptyna
klaudyny 3 i 4
klusteryna
metastases
ovarian cancer
przerzuty nowotworowe
rak jajnika
survivin
surwiwina
uPAR
Opis:
Development of metastases is a typical feature of cancer progression and the main cause of treatment failure in cancer treatment. Due to their ability to settle far from original tumor location, cancer cells may preserve the feature of immortal cells, enabling survival of tumor and transition to chronic phase of the disease. Applying currently available techniques of topical treatment, such as surgery and radiotherapy, we are unable to control fully spread of cancer cells, while systemic chemotherapy even in chemosensitive tumors does not eradicate the disease in all cases. Ovarian cancer may spread by dissemination within the abdominal cavity and lymphatic vessels, resulting in distant metastases. The process of metastases’ development is extremely complex, depending on many different factors governing intercellular adhesion and acquisition of ability to move and migrate by cancer cells. Tumors with coexisting distant metastases are considered most advanced, which means also a grim prognosis for the patient. Mechanism of metastases’ development is the subject of several studies, attempting to identify factors which might lendthemselves for targeted therapy of cancers, including ovarian cancer. The paper presents genes, their products and other metastases-associated proteins: HER2 gene, AEG-1 gene, kisspeptin, E-cadherin, survivin, uPAR, clusterin, Met gene, claudins 3 and 4, kallikreins, SDF-1 gene. This paper is meant to systematize extensive knowledge on the development of metastases development and synthetic analysis of data concerning this process.
Przerzutowanie jest cechą charakterystyczną progresji nowotworów złośliwych i główną przyczyną niepowodzeń w leczeniu raka. Dzięki zdolności do występowania w miejscach poza ogniskiem pierwotnym komórki nowotworowe mogą zachować cechę komórek nieśmiertelnych, co pozwala na przetrwanie nowotworu i nazwanie go chorobą przewlekłą. Stosując dostępne dziś metody leczenia miejscowego, takie jak chirurgia i radioterapia, nie jesteśmy w stanie w pełni kontrolować rozprzestrzeniania się komórek nowotworowych, a systemowa chemioterapia w chemiowrażliwych nowotworach nie zawsze „eradykuje” chorobę. Rak jajnika może szerzyć się poprzez rozsiew w jamie brzusznej oraz naczynia chłonne, dając przerzuty odległe. Proces przerzutowania jest niezmiernie złożony, wpływa na niego wiele różnych czynników decydujących o wzajemnym przyleganiu komórek do siebie, nabyciu zdolności ruchliwości i migracji przez komórki nowotworowe. Nowotwory, którym towarzyszą przerzuty odległe, są klasyfikowane jako najbardziej zaawansowane, co oznacza jednocześnie złe rokowanie dla pacjenta. Mechanizm przerzutowania jest przedmiotem wielu badań mających na celu wyłonienie czynników, które mogą być tarczą dla terapii celowanych nowotworów, w tym raka jajnika. W artykule przedstawiono geny i ich produkty oraz inne białka związane z przerzutowaniem: gen HER2, gen AEG-1, kisspeptynę, kadherynę-E, surwiwinę, uPAR, klusterynę, gen Met, klaudyny 3 i 4, kalikreiny, gen SDF-1. Celem pracy było usystematyzowanie obszernej wiedzy na temat przerzutowania oraz syntetyczna analiza danych dotyczących tego procesu.
Źródło:
Current Gynecologic Oncology; 2012, 10, 3; 236-243
2451-0750
Pojawia się w:
Current Gynecologic Oncology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proinflammatory cytokines (IL-6, IL-18) and apoptotic factors (HP 53, survivin) in patients with alcoholic liver cirrhosis
Autorzy:
Prystupa, Andrzej
Kiciński, Paweł
Sak, Jarosław
Grzybowski, Andrzej
Boguszewska-Czubara, Anna
Toruń-Jurkowska, Anna
Niedziałek, Jarosław
Załuska, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/972717.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
survivin
alcoholic liver cirrhosis
proinflammatory cytokines
apoptosis
human protein p53
Opis:
Background. Apoptosis is involved in the pathogenesis of alcoholic liver cirrhosis. Its development can be triggered by an inflammatory process. In the present study, levels of apoptotic factors – survivin human protein p53 (HP 53) and IL-6, IL-18 were determined according to the stage of liver cirrhosis. Material and methods. Seventy patients with alcoholic liver cirrhosis, treated in various hospitals of the Lublin region, Poland were included in the study. Serum levels of IL-6, IL-18, HP53 and survivin were determined by the enzyme-linked immunosorbent assay (ELISA) technique. Results. The serum level of survivin in patients with alcoholic liver cirrhosis was not statistically different from that found in the control group. The level of HP53 was significantly higher in the group of patients with alcoholic liver cirrhosis compared to the control group (16.53±22.69 vs. 0.39±1.31 U/ml; p<0.001). Likewise, the level of IL-6 was significantly higher in the group of patients with alcoholic liver cirrhosis compared to the control group (33.83±41.78 vs. 0.88 ± 0.56 pg/ml; p<0.001). Moreover, the level of IL-18 was significantly higher in the group of patients with liver cirrhosis compared to the control group (23.96±31.07 vs. 5.3±8.6 pg/ml; p<0.001). Conclusion. In conclusion, increased serum levels of IL-6 and IL-18 were demonstrated in patients with alcoholic liver cirrhosis. Moreover, the liver cirrhosis patients had elevated levels of HP53, which is a marker of apoptosis. Our results did not demonstrate the correlation between the levels of apoptosis markers (survivin, HP53) and the levels of cytokines (IL-6, IL-18) in the blood serum.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2017, 11, 1; 1-5
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of the BIRC5 gene in the presence of adalimumab in normal human dermal fibroblasts (NHDF)
Autorzy:
Kaźmierczak, Agata
Zmarzły, Nikola
Wcisło-Dziadecka, Dominika
Powiązania:
https://bibliotekanauki.pl/articles/1178228.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
NHDF
adalimumab
survivin
Opis:
Survivin encoded by BIRC5 belongs to the group of proteins that inhibit apoptosis. It consists of the BIR and α-helical C domains. In addition to its inhibitory activity, it plays an important role in cell cycle regulation. Adalimumab is an immunosuppressive drug, a recombinant human anti-TNF-α monoclonal antibody. It is used in the treatment of autoimmune diseases.The aim of the study was to evaluate changes in the expression of BIRC5 and genes encoding apoptosis inhibitors (IAP), depending on the exposure time of the cells to adalimumab. The study material consisted of normal human dermal fibroblasts (NHDF) cultured under standard conditions in the presence of adalimumab (8µg/mL) for 2, 8 and 24 hours. The expression profile of genes associated with apoptosis was determined with the use of HG-U133A 2.0 oligonucleotide microarrays (Affymetrix). The comparative analysis was performed with one-way ANOVA and Tukey's HSD tests (p
Źródło:
World Scientific News; 2018, 93; 60-67
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The oncoprotein HBXIP – its functions and roles in oncogenesis
Autorzy:
Grudzinska, M.
Lomperta, K.
Jakubowska, K.
Samocik, P.
Jarząbek, K.
Kanczuga-Koda, L.
Wincewicz, A.
Koda, M.
Powiązania:
https://bibliotekanauki.pl/articles/1918747.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
HBXIP
survivin
oncoprotein
transcription factor
Opis:
Nowadays, Hepatitis B X interacting protein (HBXIP) is an object of scientists’ interest worldwide. It is a protein with significant involvement in the development of malignant tumors like breast or ovarian cancer. One of the most important functions of HBXIP is the regulation of cell proliferation, which is related to the progression of a cell cycle. Many studies provide the growing number of evidence that HBXIP plays various important roles, including the regulation of a cell cycle through complexes with survivin, belonging to the inhibitors of apoptosis and interactions with transcriptional factors like STAT4, SP1, TFIID or E2F1. It also has the influence on the promotion of tumor angiogenesis thanks to the association with VEGF and FGF8. Another important role of HBXIP is a reprogramming of glucose metabolism to conditions favorable to growing cancerous cells due to regulating the activation of SCO2 and PDHA1. Furthermore, it impacts on the complement-dependent cytotoxicity, also, HBXIP affects on lipid metabolism through disturbing of metabolic pathways of FAS. According to recent studies, HBXIP can be used as a prognostic biomarker in many tumors, including cervical cancer, ovarian cancer, and esophageal squamous cell carcinoma thanks to the high expression of this protein noted exclusively in these tumor tissues. What is even more interesting, it significantly correlates with clinical attributes like metastasis to lymph nodes or grading and in some cases can potentially be used as the indicator of prognosis of treatment effectiveness. The paper is review through main functions of HBXIP and its possible applications.
Źródło:
Progress in Health Sciences; 2018, 8(2); 215-222
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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