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Tytuł:
Advances in immunotherapy for osteosarcoma: a review of emerging treatment strategies
Autorzy:
Poboży, Kamil
Domański, Paweł
Domańska, Julia
Konarski, Wojciech
Poboży, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/22792557.pdf
Data publikacji:
2023-09-13
Wydawca:
Medical Education
Tematy:
osteosarcoma
immunotherapy
immune checkpoint inhibitors
cancer vaccines
autophagy
pyroptosis
chimeric antigen receptor T cells
Opis:
Advances in immunotherapy for osteosarcoma have shown promising results, with the use of monoclonal antibodies and immune checkpoint inhibitors. These strategies are aimed at targeting specific molecules and pathways involved in tumour immune evasion and promoting anti-tumour immune responses. Other emerging immunotherapeutic approaches include autophagy and pyroptosis induction, chimeric antigen receptor T-cell therapy, gadolinium-bisphosphonate nanoparticles and dendritic cell-based vaccines. Continued research into these emerging treatment strategies is essential for developing effective therapies for patients with high-grade osteosarcoma.
Źródło:
OncoReview; 2023, 13, 3; 75-84
2450-6125
Pojawia się w:
OncoReview
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BERBERINE INDUCES AUTOPHAGY, APOPTOSIS AND MODULATES MIR-155 IN HEAD AND NECK SQUAMOUS CARCINOMA CELLS.
Autorzy:
Xue, Kai
Zhang, Binbin
He, Jingchuan
Powiązania:
https://bibliotekanauki.pl/articles/895286.pdf
Data publikacji:
2020-06-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
apoptosis
miR-155
Autophagy
berberine
Head and Neck cancer cells
Opis:
Berberine (BBR) an active natural plant alkaloid extracted from Coptidis rhizoma, displays potent anticancer activity over a variety of cancer cell lines. The cytotoxic activity of BBR in cancer cells is attributed to persuade, programmed cell death characterized by the release of cytochrome c, accompanied by activation of caspase-3 and caspase-9. In the present study, we evaluated BBR significantly reduces the cell viability and clonogenic property of head and neck squamous carcinoma (HNSC) cells. Our results revealed that BBR simultaneously induces apoptosis and autophagy in HNSC cells. Mechanistically, BBR induces autophagy in HNSC cells which were confirmed by acridine orange (AO) staining by visualization of prominent orange red color acidic autophagosomes in the cytoplasm. However, immunoblotting shows the steady conversion of MAP-LC-3I to LC-3II with concomitant degradation of autophagy substrate protein SQSTM1/p62. Annexin V FITC staining analysis by flow cytometry revealed a significant induction of apoptosis at higher doses of BBR. Furthermore, the immunoblotting analysis revealed a prominent cleavage of proapoptotic proteins procaspase-3 and PARP1 at higher doses of BBR. Additionally, we found significant upregulation and downregulation of tumor suppressor microRNA-155 (miR-155) and oncogenic miR-21 respectively, when HNSC cells were exposed to higher doses of BBR. In conclusion, these results demonstrate that BBR exhibits a significant anti-proliferative effect with the simultaneous induction of autophagy and apoptosis and modulates miRNA expression in HNSC cells.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 3; 485-494
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Brachyterapia o wysokiej mocy dawki u chorych na raka szyjki macicy
High dose rate brachytherapy in cervical cancer: an update
Autorzy:
Żółciak-Siwińska, Agnieszka
Jońska-Gmyrek, Joanna
Staniaszek, Jagna
Kawczyńska, Maryla
Kulik, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1031065.pdf
Data publikacji:
2011
Wydawca:
Medical Communications
Tematy:
3D planning
HDR brachytherapy
allogeneic hematopoietic stem cell transplantation
brachyterapia HDR
cervical cancer
computed tomographye treatment
extracorporeal photopheresis
mesenchymal stem cells
planowanie trójwymiarowe (3D)
principles of treatment
rak szyjki macicy
tomografia komputerowa
zasady leczenia
Opis:
Selection of optimal treatment modality in a patient with cervical cancer depends on FIGO clinical stage. At stages IB2-IVA, the cornerstone of treatment is radiochemotherapy. As first step, patients undergo irradiation from external fields combined with chemotherapy (cisplatin, 40 mg/m2, QW). Brachytherapy is used as second-line treatment – an essential component thereof – enabling delivery of high dose of radiation to both genital organs and tumor. Quality of this treatment directly correlates with local control of the disease, long-term overall survival and quality of life of patients after completion of therapy. The paper presents current principles of high dose rate (HDR) brachytherapy in cervical cancer patients. Discussed are principles of two-dimensional (2D) planning, used to date in about 50% of brachytherapy centers worldwide, as well as three-dimensional (3D) magnetic resonance (MR)-based planning. As availability of MR in ours and many other oncology centers is limited, a computed tomography-based modification of gynecologic recommendations GIN GEC ESTRO has been suggested. Therapeutic areas are defined: high-risk clinical target volume (HR CTV) and intermediate risk clinical target volume (IR CTV) which may be safely contoured based on clinical exam and CT study, when no MRI is available. Acceptable doses for critical organs are listed. Based on own experience, indications and limitations for use of intraparenchymal (interstitial) and intracavitary applications were developed.
Wybór metody leczenia chorych na raka szyjki macicy jest uzależniony od stopnia zaawansowania, ocenionego według klasyfikacji FIGO (International Federation of Gynecology and Obstetrics). Zasadniczą metodą leczenia chorych na raka szyjki macicy w stopniach zaawansowania IB2-IVA jest radiochemioterapia. W pierwszym etapie przeprowadzane jest napromienianie z pól zewnętrznych wraz z chemioterapią z zastosowaniem cisplatyny w dawce 40 mg/m2, raz w tygodniu. W kolejnym etapie leczenia stosuje się brachyterapię. Brachyterapia jest istotną częścią leczenia, umożliwiającą podanie wysokiej dawki na narząd rodny wraz z guzem, a jakość tego leczenia ma wpływ na kontrolę miejscową nowotworu (LC), przeżycia odległe (OS), jak również na jakość życia chorych po zakończeniu terapii. W pracy przedstawiono zasady obowiązujące współcześnie podczas leczenia brachyterapią o wysokiej mocy dawki (high dose rate brachytherapy, HDR) u chorych na raka szyjki macicy. Opisano zasady planowania w systemie dwuwymiarowym (2D), stosowanym do dzisiaj mniej więcej w połowie ośrodków brachyterapii na świecie, oraz planowania w systemie trójwymiarowym (3D) na podstawie rezonansu magnetycznego (MR). Ponieważ dostępność MR w naszym i wielu ośrodkach onkologicznych jest utrudniona, zaproponowano modyfikację rekomendacji GIN (Gynaecological) GEC ESTRO dla potrzeb planowania, opierając się na tomografii komputerowej. Zdefiniowano obszary terapeutyczne: HR CTV (high-risk clinical target volume), IR CTV (intermediate risk clinical target volume), jakie można bezpiecznie konturować, opierając się na badaniu klinicznym i TK, przy braku MR. Opisano dopuszczalne dawki dla narządów krytycznych. Na podstawie własnych doświadczeń opracowano wskazania i ograniczenia w zastosowaniu aplikacji śródtkankowych i śródjamowych.
Źródło:
Current Gynecologic Oncology; 2011, 9, 4; 264-271
2451-0750
Pojawia się w:
Current Gynecologic Oncology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
c-myc Oncogene gene dosage, serum CEA and CA-15.3 antigen levels, and cellular DNA values in relation to ex vivo chemosensitivity of primary human breast cancer.
Autorzy:
Falkiewicz, Bogdan
Schlotter, Claus
Bosse, Ulrich
Bielawski, Krzysztof
Vogt, Ulf
Powiązania:
https://bibliotekanauki.pl/articles/1044409.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cultured tumor cells
antitumor drug screening assays
oncogenes
antineoplastic agents
drug resistance
breast cancer
Opis:
A pilot study on relationships of selected molecular factors (c-myc oncogene average gene copy numbers (AGCN); serum CEA and CA 15.3 antigen levels; tumor cells' DNA values), to the ex vivo chemosensitivity of primary female human breast cancer in a modified adenosine triphosphate cell viability chemosensitivity assay (ATP-CVA), was performed. Four drug combinations were tested. A group of 75 cases of female primary breast cancer was assessed. Numerous correlations were found among molecular factors tested but none, with the exception of tumor grading, of these reflected ex vivo chemosensitivity of tumors tested. The results suggest that the parameters tested may not be important factors related to adjuvant chemoresponsiveness of primary human breast cancer to tested drug combinations.
Źródło:
Acta Biochimica Polonica; 2000, 47, 1; 149-156
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cancer immunotherapy using cells modified with cytokine genes.
Autorzy:
Kowalczyk, Dariusz
Wysocki, Piotr
Mackiewicz, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1043434.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cancer
cancer vaccines
cytokines
dendritic cells
gene therapy
Opis:
The ability of various cytokines to hamper tumor growth or to induce anti-tumor immune response has resulted in their study as antitumor agents in gene therapy approaches. In this review we will concentrate on the costimulation of antitumor immune responses using modification of various cell types by cytokine genes. Several strategies have emerged such as (i) modification of tumor cells with cytokine genes ex vivo (whole tumor cell vaccines), (ii) ex vivo modification of other cell types for cytokine gene delivery, (iii) delivery of cytokine genes into tumor microenvironment in vivo, (iv) modification of dendritic cells with cytokine genes ex vivo. Originally single cytokine genes were used. Subsequently, multiple cytokine genes were applied simultaneously, or in combination with other factors such as chemokines, membrane bound co-stimulatory molecules, or tumor associated antigens. In this review we discuss these strategies and their use in cancer treatment as well as the promises and limitations of cytokine based cancer gene therapy. Clinical trials, including our own experience, employing the above strategies are discussed.
Źródło:
Acta Biochimica Polonica; 2003, 50, 3; 613-624
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative effects of selected plant polyphenols, gallic acid and epigallocatechin gallate, on matrix metalloproteinases activity in multidrug resistant MCF7/DOX breast cancer cells
Autorzy:
Nowakowska, Anna
Tarasiuk, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1038784.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
phenolic compounds
gallic acid
epigallocatechin gallate
matrix metalloproteinases
human breast cancer MCF7 cells
multidrug resistance MDR
Opis:
The aim of the study was to investigate the effect of selected polyphenols: gallic acid (GA) and epigallocatechin gallate (EGCG) on matrix metalloproteinase (MMP-2 and MMP-9) activity in multidrug resistant (MDR) human breast adenocarcinoma cells: MCF7/DOX cells and obtained recently in our laboratory MCF7/DOX500 cells by the permanent selection of MCF7/DOX cells with 500 nM doxorubicin (DOX). The activity of MMP-2 and MMP-9 and the effect of studied polyphenols on these matrix proteases were examined by gelatin zymography assays. We have found that the activity of MMP-2 and MMP-9 significantly increased in resistant MCF7/DOX and MCF7/DOX500 cells whereas they were not detected in sensitive MCF7 cells. It was also observed that GA (30, 60, 100 and 120 µM) and EGCG (5, 10 and 20 µM) caused a comparable concentration-dependent inhibition of MMP-2 and MMP-9 activity in MCF7/DOX and MCF7/DOX500 cells. Control experiments confirmed that examined compounds in these ranges of concentration did not affect the cell growth of MCF7/DOX and MCF7/DOX500 sublines (80-100% of control cell growth was observed in the presence of studied polyphenols).
Źródło:
Acta Biochimica Polonica; 2016, 63, 3; 571-575
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation of clinico-pathologic data with inflammatory cells infiltration in colorectal cancer
Autorzy:
Grudzińska, M.
Jakubowska, K.
Kańczuga-Koda, L.
Kisielewski, W.
Famulski, W.
Smereczański, N.M.
Lomperta, K.
Płoński, M.A.
Rogoz-Jezierska, N.
Koda, M.
Powiązania:
https://bibliotekanauki.pl/articles/1918914.pdf
Data publikacji:
2020-06-10
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Colorectal cancer
inflammatory cells
fibrosis
Opis:
Introduction: Colorectal cancer (CRC) is the third most common cancer worldwide. At every phase of cancer development, the inflammatory process has an important impact. Accurate assessment inflammatory cells in the tumour environment in conjunction with clinico-pathologic features can be a relevant prognostic or predictive parameter. Purpose: To analyse inflammatory cell infiltration in CRC tumour mass and correlate with chosen clinico-pathologic parameters. Materials and methods: The study group consisted of 160 patients (64 women, 96 men) diagnosed with colorectal cancer who underwent surgery. Tissue material obtained from routine histopathological diagnosis was stained with H&E and used to assess the type of inflammatory cells in the invasive front and centre of the tumour. Results were subjected to statistical analysis with the age and gender of patients, tumour localization, tumour growth and size, TNM stage, adenocarcinoma type, fibrosis, necrosis, metastasis and tumour invasion (by the Spearman’s correlation coefficient test). Results: The presence of neutrophils in the invasive front of tumour mass was associated with fibrosis and inflammatory cell infiltration in the invasive front of tumour. Macrophages in the invasive front of tumour were found to correlate with tumour growth (expanding and infiltrate). Macrophages and eosinophils were associated with inflammatory cell infiltration in the invasive front and in the centre of tumour. Conclusions: The type of inflammatory cells in the invasive front or centre of the tumour may be useful to prognoses clinical features of colorectal cancer
Źródło:
Progress in Health Sciences; 2020, 10(1); 69-76
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cytotoxic and apoptosis inducing effect of some pyrano [3, 2-c] pyridine derivatives against MCF-7 breast cancer cells
Autorzy:
Rahnamay, Mohammad
Mahdavi, Majid
Shekarchi, Ali
Zare, Payman
Hosseinpour Feizi, Mohammad
Powiązania:
https://bibliotekanauki.pl/articles/1038367.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
apoptosis
pyrano-pyridine
breast cancer
MCF-7 cells
Opis:
Anti-cancer activities of some pyrano-pyridines have been previously reported. Herein, we investigated anti-proliferative and apoptotic effects of the novel pyrano [3, 2-c] pyridine (P.P, TPM.P, 4-CP.P and 3-NP.P) compounds against MCF-7 breast cancer cells. The MCF-7 cells were cultured in the presence of various concentrations (20-200 μM) of the tested compounds for 3 days and the cell viability was determined by MTT assay. Induction of apoptosis was qualitatively assayed by acridine orange/ethidium bromide (AO/EtBr) staining, DNA fragmentation assay, as well as quantitatively by Annexin V/PI double staining and cell cycle analysis. These compounds inhibited growth and proliferation of the MCF-7 cells in a dose- and time-dependent manner. The IC50 values of P.P, TPM.P, 4-CP.P and 3-NP.P after 24 h of exposure were calculated to be 100±5.0, 180±6.0, 60±4.0 and 140±5.0 μM, respectively. 4-CP.P was determined as the most potent compound and was chosen for further studies. The result of flow cytometric cell cycle analysis indicated an increase in sub-G1 population after 72 h treatment of the cells. Furthermore, this was accompanied by exposure of phosphatidylserine (PS) in the outer cell membrane after time course of treatment with the 4-CP.P. Based on these observations, the pyrano [3, 2-c] pyridines can be regarded as a valuable candidate for further pharmaceutical evaluations.
Źródło:
Acta Biochimica Polonica; 2018, 65, 3; 397-402
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of circulating tumour cells in the breast cancer using CytoTrack system
Autorzy:
Bogacz, A.
Wolek, M.
Górska, A.
Leporowska, E.
Procyk, D.
Kolenda, P.
Litwiniuk, M.
Uzar, I.
Gryszczyńska, A.
Łowicki, Z.
Czerny, B.
Powiązania:
https://bibliotekanauki.pl/articles/2048955.pdf
Data publikacji:
2019
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
circulating tumour cells
breast cancer
CytoTrack CT11
liquid biopsy
wolnokrążące komórki nowotworowe
rak piersi
CytroTrack CT11
płynna biopsja
Opis:
Introduction: Plants are a rich source of healing substances. Cancer is a leading cause of death worldwide while breast cancer is the most common cancer among women. Circulating tumour cells (CTCs) are potential founder cells for metastasis. Therefore, their assessment may be used for monitoring of treatment as well as detecting cancer metastatis. Hence, it is suggested that the number of CTCs may be a valuable tumour biomarker during therapy. Objective: The purpose of this study was to detect CTCs in breast cancer and to validate the method of assessment of CTC count using CytoTrack CT11 technology. Methods: MCF-7 cells were sorted by a FACSARIA flow cytometer from blood samples derived from patients who have not been diagnosed with cancer. Identification and quantitative assessment of MCF-7 cells in blood samples were determined by flow sorting. Then, blood samples containing MCF-7 cells or without MCF-7 were scanned with the use of an automated fluorescence scanning microscope. Results: In in vitro model analysing the glass CytoDisc™ with stained MCF-7 cells, we noted the correlation between the amount of observed tumour cells and expected number of tumour cells. Moreover, coefficient of variation in case of the recovery rate of the assumed number of MCF-7 cells was 30%, 17%, 18% and 15%, respectively. Conclusion: Our study suggest that CTCs could be predictive factor in patients with metastatic cancer especially in breast cancer.
Źródło:
Herba Polonica; 2019, 65, 4; 31-36
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DNAzyme as an efficient tool to modulate invasiveness of human carcinoma cells
Autorzy:
Wiktorska, Magdalena
Papiewska-Pająk, Izabela
Okruszek, Andrzej
Sacewicz-Hofman, Izabela
Niewiarowska, Jolanta
Powiązania:
https://bibliotekanauki.pl/articles/1040367.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cancer cells
DNAzyme
integrin
Opis:
In this study we evaluated efficiency of DNAzymes to modulate motility of cancer cells, an important factor in the progression and metastasis of cancers. For this purpose we targeted β1 integrins that are predominant adhesive receptors in various carcinoma cell lines (CX1.1, HT29, LOVO, LS180, PC-3). To evaluate invasiveness of cancer cells, we used a transwell migration assay that allowed analyzing chemotactic migration of colon carcinoma cell lines across an ECM-coated membrane. Their adhesive properties were also characterized by the analysis of adhesion to fibronectin, laminin and collagen. In addition, the expression of major integrin subunits, selected intact β1 integrins, and other adhesive receptors (ICAM, E-selectin, uPAR) was analyzed by flow cytometry. Inhibition of β1 integrin expression by DNAzyme to β1 mRNA almost abolished the invasiveness of the CX1.1, HT29, LS180, LOVO and PC-3 cells in vitro. These data show that DNAzymes to β1 integrin subunit can be used to inhibit invasiveness of carcinoma cells.
Źródło:
Acta Biochimica Polonica; 2010, 57, 3; 269-275
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of immature monocyte-derived dendritic cells generated from patients with colorectal cancer
Autorzy:
Maciejewski, Ryszard
Radej, Sebastian
Furmaga, Jacek
Chrościcki, Andrzej
Rudzki, Sławomir
Roliński, Jacek
Wallner, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1396521.pdf
Data publikacji:
2013-12-01
Wydawca:
Index Copernicus International
Tematy:
dendritic cells
colon cancer
immunotherapy
Opis:
Dendritic cells are heterogeneous population of the leukocytes and most potent APC in activation of naive T lymphocytes. Therefore the DCs generated in vitro are under research for their application in anti-tumor immunotherapy. The aim of the study was generation of the immature dendritic cells from peripheral blood monocytes collected from colorectal cancer patients and comparison of their ability to endocytosis, cytokine production and immunophenotype to DCs generated from healthy donors. Material and methods. 16 adenocarcinoma stage II patients were included in the study. Dendritic cells were generated in the presence of rhGM-CSF and IL-4. PBMC were isolated from the blood of patients and 16 healthy donors - control group. Immunophenotype, ability of endocytosis of Dextran- FITC as well as intracellular IL-12 expression of the generated dendritic cells was measured using flow cytometry. The cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration in the supernatants of DCs culture was measured by ELISA. Results. The percentage of the immature dendritic cells and expression of CD206 and CD209 antigens was significantly higher in patients group (p <0.05 and p <0.001 respectively). Significantly (p <0.001) higher expression of the antigens which initiate the Th2 immune response (CD80-/CD86 + and B7-H2 + / CD209 +) was in the patients group. There were no differences in endocytosis ability and the cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration between investigated groups. Conclusions. High immature markers expression on the generated dendritic cells together with identical endocytosis ability in patients group is advantageous in antitumor autologous cells immunotherapy planning. However there is one troubling fact - high expression of markers, which may induce tolerance to particular antigen. It seems to be more reasonable to use the autologous DCs in the antitumor immunotherapy, especially due to the incompatibility in allogenic cells in the context of HLA complex.
Źródło:
Polish Journal of Surgery; 2013, 85, 12; 714-720
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of the PLS3 Gene in Circulating Cells in Patients with Colorectal Cancer
Autorzy:
Kujawski, Ryszard
Przybyłowska-Sygut, Karolina
Mik, Michał
Lewandowski, Miłosz
Trzciński, Radzisław
Berut, Maciej
Dziki, Łukasz
Majsterek, Ireneusz
Dziki, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1395524.pdf
Data publikacji:
2015-02-01
Wydawca:
Index Copernicus International
Tematy:
Plastin-3
PL S3
circulating tumor cells
CTC
colorectal cancer
Opis:
Circulating tumor cells (CTC) are cells in circulating blood that have the antigen and gene features of tumor cells of a specific type. Since they can be potentially used in diagnostics and monitoring of treatment of many tumors, they have been attracting attention of researchers worldwide. Plastin-3 (PL S3) is one of such markers of CTC. The aim of the study was to assess expression of PL S3 in CTC in patients with colorectal cancer, to conduct a statistical analysis and to demonstrate a link between expression of PL S3 and progress of the disease, level of CEA and Ca19-9 markers, gender and age of the patients. Material and methods. A group of 85 patients of the Department of General and Colorectal Surgery of the Medical University in Łódź were enrolled in this study. Circulating tumor cells were isolated from whole blood of patients with colorectal cancer and an analysis of PL S3 gene expression in CTC was conducted. The next step was to conduct a statistical analysis and to demonstrate a link between expression of PL S3 in patients’ CTC and progress of the disease, level of CEA and Ca19-9 markers, gender and age of the patients. Results. PL S3 is a marker which can be potentially used in prediction and monitoring of colorectal cancer. A link between expression of PL S3 in CTC of patients with colorectal cancer and metastasis to lymph nodes has been demonstrated. It may be of key importance how PL S3 could impact the qualification to supplementary cancer treatment in patients with stage II colorectal cancer. A link between expression of PL S3 gene in CTC and gender requires further in-depth studies. It is beyond doubt that PL S3 must be further investigated to determine its role in diagnostics, prediction, treatment and monitoring of treatment of colorectal cancer
Źródło:
Polish Journal of Surgery; 2015, 87, 2; 59-64
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth suppression of human breast carcinoma stem cells by lipid peroxidation product 4-hydroxy-2-nonenal and hydroxyl radical-modified collagen
Autorzy:
Cipak, Ana
Mrakovcic, Lidija
Ciz, Milan
Lojek, Antonin
Mihaylova, Boryana
Goshev, Ivan
Jaganjac, Morana
Cindric, Marina
Sitic, Sanda
Margaritoni, Marko
Waeg, Georg
Balic, Marija
Zarkovic, Neven
Powiązania:
https://bibliotekanauki.pl/articles/1040399.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
collagen
4-hydroxynonenal
breast cancer stem cells
extracellular matrix
oxidative homeostasis
SUM159
Opis:
Breast cancer is a leading cause of mortality and morbidity in women, mostly due to high metastatic capacity of mammary carcinoma cells. It has been revealed recently that metastases of breast cancer comprise a fraction of specific stem-like cells, denoted as cancer stem cells (CSCs). Breast CSCs, expressing specific surface markers CD44+CD24-/lowESA+ usually disseminate in the bone marrow, being able to spread further and cause late metastases. The fundamental factor influencing the growth of CSCs is the microenvironment, especially the interaction of CSCs with extracellular matrix (ECM). The structure and function of ECM proteins, such as the dominating ECM protein collagen, is influenced not only by cancer cells but also by various cancer treatments. Since surgery, radio and chemotherapy are associated with oxidative stress we analyzed the growth of breast cancer CD44+CD24-/lowESA+ cell line SUM159 cultured on collagen matrix in vitro, using either native collagen or the one modified by hydroxyl radical. While native collagen supported the growth of CSCs, oxidatively modified one was not supportive. The SUM159 cell cultures were further exposed to a supraphysiological (35 µM) dose of the major bioactive lipid peroxidation product 4-hydroxynonenal (HNE), a well known as 'second messenger of free radicals', which has a strong affinity to bind to proteins and acts as a cytotoxic or as growth regulating signaling molecule. Native collagen, but not oxidised, abolished cytotoxicity of HNE, while oxidized collagen did not reduce cytotoxicity of HNE at all. These preliminary findings indicate that beside direct cytotoxic effects of anticancer therapies consequential oxidative stress and lipid peroxidation modify the microenvironment of CSCs influencing oxidative homeostasis that could additionally act against cancer.
Źródło:
Acta Biochimica Polonica; 2010, 57, 2; 165-171
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High expression of CD133 – stem cell marker for prediction of clinically agressive type of colorectal cancer
Autorzy:
Kostovski, Ognen
Antovic, Svetozar
Trajkovski, Gjorgji
Kostovska, Irena
Jovanovic, Rubens
Jankulovski, Nikola
Powiązania:
https://bibliotekanauki.pl/articles/1391698.pdf
Data publikacji:
2020
Wydawca:
Index Copernicus International
Tematy:
CD133
colorectal cancer
immunohistochemistry
stem cells
Opis:
Background: Colorectal cancer (CRC) is one of the most common malignancies in the world. The cancer stem cell (CSC) markers are associated with aggressive cancer types and poor prognosis. The objective of the study was to evaluate the CD133 expression and to correlate it with clinicopathological features in patients with CRC. Material and Methods: Our study included ninety patients with CRC who underwent curative surgical resection from 2012 to 2017 at the University Clinic for Digestive Surgery, Skopje, North Macedonia. Tumor samples were first analyzed with standard histopathological methods and then the CD133 expression was investigated immunohistochemically. The level of expression of CD133 was classified semiquantitatively. Low positivity was defined as positive immunoreactivity in <50% of tumor glands, and high positivity was defined as positive immunoreactivity in ≥50% of tumor glands. Furthermore, clinicopathological features of patients were retrospectively reviewed. Results: High expression of CD133 was found in 47.8% of patients’ CRC samples. In 69.6% of patients with metastatic lesions in visceral organs we found high expression of CD133. We found statistically significant differences in the expression of CD133 between patients with and without visceral metastatic lesions (P = 0.0153), between patients with a different T category (P = 0.0119), N status (P = 0.0066) and grade (G) (P = 0.0115). Our results showed that the stage of disease has the greatest impact on expression of CD133 (P < 0.00001). Conclusion: High expression of CD133 is a useful marker for prediction of the clinically aggressive type of CRC and can be routinely implemented in standard pathohistological diagnostics.
Źródło:
Polish Journal of Surgery; 2020, 92, 3; 9-14
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunoekspresja nestyny w gwiaździaku włosowatokomórkowym i glioblastoma
Nestin immunoexpression in pilocytic astrocytoma and glioblastoma
Autorzy:
Zielonka, Emil
Powiązania:
https://bibliotekanauki.pl/articles/1057791.pdf
Data publikacji:
2012
Wydawca:
Medical Communications
Tematy:
cancer stem cells
microvascular proliferation
mikroproliferacje naczyń
nestin
pilocytic astrocytoma
glioblastoma
nestyna
gwiaździak włosowatokomórkowy
glejak wielopostaciowy
nowotworowe
komórki macierzyste
Opis:
Pilocytic astrocytoma and glioblastoma are both primary glial tumours of the central nervous system with entirely different histological malignancy grades. One of their features is vascular proliferation, which in the case of glioblastoma is a hallmark of malignancy but not in the case of pilocytic astrocytoma. While vascular proliferations in both tumours usually differ in microscopic appearance, they may be quite difficult to discriminate in a sparse biopsy material and also in a pilocytic astrocytoma with increased proliferation index. Independent studies of glioblastoma have shed some light on the role of non-endothelial cells in tumour neoangiogenesis. These cells originate from neoplastic, nestin immunoreactive stem cells. Expression of this protein has been noticed in grade II-IV astrocytic tumours and in primary grade I glial tumours (e.g. pilocytic astrocytoma). The aim of this study was to assess nestin expression in tumour cells and in blood vessels of tumours at differing grades of malignancy, using immunohistochemical staining and confocal laser microscopy. In our material, nestin was expressed in the cytoplasm of most glioblastoma cells and isolated cells of pilocytic astocytoma.Cytoplasmic immunoexpression of nestin was also detected in cells lining single blood vessels and vascular proliferations. Results of this study suggest that nestin should not be used as the only marker used to differentiate malignant from benign vascular proliferation in CNS tumours.
Gwiaździak włosowatokomórkowy oraz glioblastoma są pierwotnymi nowotworami glejowymi o skrajnych stopniach złośliwości. Charakteryzują się występowaniem proliferacji naczyniowych, które w przypadku glioblastoma są oznaką złośliwości, ale nie stanowią złośliwości gwiaździaka pilocytarnego. Chociaż rozrosty naczyniowe w obu nowotworach różnią się zwykle obrazem mikroskopowym, to niekiedy trudno je od siebie odróżnić, szczególnie w skąpym materiale biopsyjnym, a także w przypadku gwiaździaków włosowatokomórkowych o podwyższonym indeksie proliferacyjnym. Niezależne badania glioblastoma wykazały udział nieendotelialnych komórek w tworzeniu nowych naczyń krwionośnych. Źródłem tychże komórek okazały się nowotworowe komórki macierzyste, których markerem jest nestyna. Ekspresję tego białka odnotowano w nowotworach astrocytarnych od II do IV stopnia złośliwości oraz w pierwotnych nowotworach glejowych o I stopniu złośliwości, gwiaździakach włosowatokomórkowych. Celem przeprowadzonych badań było określenie obecności markera nestyny w komórkach i naczyniach krwionośnych nowotworów o skrajnych stopniach złośliwości, z wykorzystaniem barwień immunohistochemicznych i laserowej mikroskopii konfokalnej. W analizowanych przypadkach nestyna ulegała ekspresji w cytoplazmie większości komórek nowotworowych glioblastoma oraz w pojedynczych komórkach gwiaździaków włosowatokomórkowych. Cytoplazmatyczny odczyn nestyny stwierdzono również w komórkach wyściełających pojedyncze naczynia i rozrosty naczyniowe badanych nowotworów. Wyniki uzyskanych badań sugerują, że nestyna nie może być stosowana jako jedyny marker, wystarczający do określenia złośliwych lub łagodnych rozrostów naczyniowych w nowotworach OUN.
Źródło:
Aktualności Neurologiczne; 2012, 12, 1; 44-49
1641-9227
2451-0696
Pojawia się w:
Aktualności Neurologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
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