scholarly journals Chitosan Membranes Filled with Cyclosporine A as Possible Devices for Local Administration of Drugs in the Treatment of Breast Cancer

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1889
Author(s):  
Sonia Trombino ◽  
Federica Curcio ◽  
Teresa Poerio ◽  
Michele Pellegrino ◽  
Rossella Russo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cyclosporine A ◽  
Cancer Cell Line ◽  
Amide Bond ◽  
Proton Nuclear Magnetic Resonance ◽  
Polymeric Membrane ◽  
Breast Cancer Patients ◽  
Scanning Calorimetry ◽  
Amidation Reaction ◽  
Ft Ir

The aim of this work is the design, preparation and characterization of membranes based on cyclosporine A (CsA) and chitosan carboxylate (CC) to be used as an implantable subcutaneous medical device for a prolonged therapeutic effect in the treatment of breast cancer. The choice to use CsA is due to literature data that have demonstrated its possible antitumor activity on different types of neoplastic cells. To this end, CsA was bound to CC through an amidation reaction to obtain a prodrug to be dispersed in a chitosan-based polymeric membrane. The reaction intermediates and the final product were characterized by Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR). Membranes were analyzed by differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The data obtained showed the effective formation of the amide bond between CsA and CC and the complete dispersion of CsA inside the polymeric membrane. Furthermore, preliminary tests, conducted on MDA-MB-231, a type of breast cancer cell line, have shown a high reduction in the proliferation of cancer cells. These results indicate the possibility of using the obtained membranes as an interesting strategy for the release of cyclosporin-A in breast cancer patients.

scholarly journals Epigenetic re-wiring of breast cancer by pharmacological targeting of C-terminal binding protein

2019 ◽  
Vol 10 (10) ◽  
Author(s):  
Jung S. Byun ◽  
Samson Park ◽  
Dae Ik Yi ◽  
Jee-Hye Shin ◽  
Sara Gil Hernandez ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Water Solubility ◽  
Binding Protein ◽  
Cancer Cell Line ◽  
Pharmacological Intervention ◽  
Computer Assisted ◽  
Functional Screening ◽  
Gene Promoters ◽  
Breast Cancer Patients ◽  
Qsar Modeling

Abstract The C-terminal binding protein (CtBP) is an NADH-dependent dimeric family of nuclear proteins that scaffold interactions between transcriptional regulators and chromatin-modifying complexes. Its association with poor survival in several cancers implicates CtBP as a promising target for pharmacological intervention. We employed computer-assisted drug design to search for CtBP inhibitors, using quantitative structure-activity relationship (QSAR) modeling and docking. Functional screening of these drugs identified 4 compounds with low toxicity and high water solubility. Micro molar concentrations of these CtBP inhibitors produces significant de-repression of epigenetically silenced pro-epithelial genes, preferentially in the triple-negative breast cancer cell line MDA-MB-231. This epigenetic reprogramming occurs through eviction of CtBP from gene promoters; disrupted recruitment of chromatin-modifying protein complexes containing LSD1, and HDAC1; and re-wiring of activating histone marks at targeted genes. In functional assays, CtBP inhibition disrupts CtBP dimerization, decreases cell migration, abolishes cellular invasion, and improves DNA repair. Combinatorial use of CtBP inhibitors with the LSD1 inhibitor pargyline has synergistic influence. Finally, integrated correlation of gene expression in breast cancer patients with nuclear levels of CtBP1 and LSD1, reveals new potential therapeutic vulnerabilities. These findings implicate a broad role for this class of compounds in strategies for epigenetically targeted therapeutic intervention.

Immunoglobulin G fragment C receptor polymorphisms and response to trastuzumab-based treatment in patients with HER-2/neu-positive metastatic breast cancer

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 13090-13090 ◽  
Author(s):  
A. Musolino ◽  
N. Naldi ◽  
B. Bortesi ◽  
M. Capelletti ◽  
D. Pezzuolo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Metastatic Breast Cancer ◽  
Immunoglobulin G ◽  
Mononuclear Cells ◽  
Metastatic Breast ◽  
Cancer Cell Line ◽  
Breast Cancer Patients ◽  
Peripheral Blood Mononuclear ◽  
Immune Effector ◽  
Her 2

13090 Background: A potential mechanism of action of the humanized anti-HER-2/neu monoclonal antibody Trastuzumab involves antibody-dependent cellular cytotoxicity (ADCC) with the activation of immune effector cells via their immunoglobulin G fragment C receptors (FcγRs). Trastuzumab has been shown to engage both activation (FcγRIIIa; FcγRIIa) and inhibitory (FcγRIIb) antibody receptors on myeloid cells and several FcγR polymorphisms have been identified that may affect the antibody-dependent cytotoxicity of natural killer cells and macrophages. Methods: Forty consecutive HER-2/neu-positive (FISH+) metastatic breast cancer patients receiving a trastuzumab-based treatment (combined with paclitaxel for the majority) were examined for the FcγRIIIa 158 valine (V)/phenylalanine (F), FcγRIIa 131 histidine (H)/arginine (R), and FcγRIIb 232 isoleucine (I)/threonine (T) polymorphisms. A PCR-RFLP based assay using genomic DNA was performed for FcγRIIIa and FcγRIIa genotyping, while PCR-SSCP methods using complementary DNA were utilized for FcγRIIb. Patients’ peripheral blood mononuclear cells were drawn before treatment initiation and their trastuzumab-mediated killing function was measured by 51Cr release using a HER-2/neu-expressing human breast cancer cell line as a target. The results were then correlated with clinical outcome of these patients. Results: Median age was 60 years (range 26–83 years). Thirty-six (90%) patients received a trastuzumab-based treatment as first-line therapy. The overall clinical benefit rate (CR+PR+SD) was 65% (95% Confidence Interval: 62–71%), including 8 (20%) complete and 11 (27.5%) partial responses. Median survival was 22.3 mo with a median PFS of 7 mo. Trastuzumab-based treatment was well tolerated and no changes in cardiac function were observed. Conclusions: This study evaluates for the first time the potential role of FcγR polymorphisms in predicting response to trastuzumab-based treatment. Results according to this study purpose will be presented at the meeting. No significant financial relationships to disclose.

scholarly journals Assessment of Anticancer Effect of Alendronate in Breast Cancer: An In vitro Study

2019 ◽  
Vol 2 (2) ◽  
pp. 1-7
Author(s):  
Nida Syed Amber Ilyas ◽  
Shamshad Zarina ◽  
Zehra Hashim
Keyword(s):  
Breast Cancer ◽  
Cell Proliferation ◽  
Cancer Cell ◽  
Cancer Cell Line ◽  
Bone Diseases ◽  
Breast Cancer Patients ◽  
Anticancer Effect ◽  
Mva Pathway ◽  
Anticancer Efficacy

Breast cancer has high incidence in women from both developed and developing countries. Approximately 2 million women are diagnosed with breast cancer in 2018. In Asia, unfortunately Pakistan leads the highest number of breast cancer patients. Various treatment strategies are present but they are not well developed. There is a great need to develop effective methods for early detection and treatment of the disease. For cancer treatment chemotherapeutic interventions have always been a method of choice. One of the mechanisms involved in cancerous cell proliferation is Mevalonate (MVA) pathway. It is hypothesized that arresting MVA pathway leads to cell death hence cancer cell growth is suppressed. Various inhibitors of MVA pathway have been studied that can suppress cell proliferation. Nitrogen containing bisphosphonates are MVA pathway inhibitor and clinically used for treatment of bone diseases. Their anticancer efficacy is also reported. Current study focuses on alendronate, a nitrogen containing bisphosphonate to examine their anticancer effect on breast cancer cell line. Results of this study may help in addition of new anticancer drug for breast cancer.

scholarly journals Performing Data Mining to Explain the Correlation between the BIRC5 Gene and Prognosis in Breast Cancer Patients

2020 ◽  
Author(s):  
Hong Dongsheng ◽  
Zhang YanFang ◽  
Ye Ziqi ◽  
Chen Jing ◽  
Lu Xiaoyang
Keyword(s):  
Breast Cancer ◽  
Mrna Expression ◽  
Cancer Patients ◽  
Cancer Cell Line ◽  
Breast Cancers ◽  
Breast Cancer Patients ◽  
Luminal A ◽  
Luminal B ◽  
Kaplan Meier ◽  
Er Positive

Abstract Background: Breast cancer is the most commonly malignant cancers in women, and BIRC5 has been found to be overexpressed in a variety of human tumors. Its expression is associated with the prognosis of many cancers. However, whether BIRC5 mRNA could be used as an independent prognostic factor for breast cancer remains inconsistent in previous studies.Methods: Altered BIRC5 expression in normal tissue relative to various tumor tissue and in breast cancer patients with different molecular subtypes, clinical outcomes and chemotherapy responses were examined using the Oncomine, GOBO and Kaplan-Meier plotter datasets.Results: We found that many breast cancers had increased BIRC5 mRNA expression, and GOBO analysis showed that triple-negative cell lines displayed highest BIRC5 mRNA expression levels in the breast cancer cell line panel. Moreover, BIRC5 high mRNA expression was significantly associated with longer relapse-free survival (RFS) in all breast cancer patients. In particular, sub analysis revealed that high mRNA expression of BIRC5 was significantly associated with better survival in ER positive (HR = 2.05, p = 1e-16), but not in ER negative breast cancer (HR = 1.24, p = 0.1), furthermore, the results also demonstrated that BIRC5 high expression was significantly associated with longer RFS in luminal A (HR = 1.51, p = 3.1e-06) and luminal B (HR = 1.28, p = 0.026).Conclusions: In conclusion, BIRC5 is involved in the development and progression of breast cancer and may be a suitable prognostic marker for human breast cancer.

Upregulation of CD271 Transcriptome in Breast Cancer Promotes Cell Survival via NFκB Pathway

2021 ◽  
Author(s):  
Ramla Shahid ◽  
Nabiha Bashir ◽  
Mehreen Ishfaq ◽  
Kehkashan Mazhar ◽  
Jahangir Sarwar Khan
Keyword(s):  
Breast Cancer ◽  
Cancer Cell ◽  
Transmembrane Protein ◽  
Age Groups ◽  
Tumor Necrosis Factor Receptor ◽  
Cancer Cell Line ◽  
Breast Cancer Patients ◽  
Breast Tumor Tissue ◽  
And Migration ◽  
Nfκb Pathway

Abstract BackgroundBiological treatment of many cancers currently targets membrane bound receptors located on a cell surface. We are in a great to need identify novel membrane proteins associated with migration and metastasis of breast cancer cells. CD271, a single transmembrane protein belongs to tumor necrosis factor receptor acts and play its role in proliferation of cancer cell. The purpose of this study is to investigate the role of CD271 in breast cancer. Methods and ResultsIn this study we analyzed the expression of CD271 in breast tumor tissue, breast cancer cell line MCF7 and isolated cancer stem cells (MCF7-CSCs) by quantitative real-time polymerase chain reaction (RT-qPCR). CD271 was upregulated among breast cancer patients in all age groups. Within the promoter region of CD271, there is a binding site for NF-κB1 which overlaps a putative quadraplex forming sequence. While CD271 also activates NF-κB pathway, down regulation of CD271 through quadraplex targeting resulted in inhibition of NF-κB and its downstream targets Nanog and Sox2ConclusionIn conclusion, CD271 and NF-κB are interrelated to each other. Upon CD271 inhibition, the NF-κB expression also reduces which then effected the cell proliferation and migration. These results suggest that NF-κB is regulated by CD271 is playing a crucial role in cancer development and could be a potential therapeutic target.

Halogenated sunflower oil as a precursor for synthesis of polysulfide polymer

e-Polymers ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Samira Moqadam ◽  
Mehdi Salami-Kalajahi
Keyword(s):  
Sunflower Oil ◽  
Proton Nuclear Magnetic Resonance ◽  
Gravimetric Analysis ◽  
Scanning Calorimetry ◽  
X Ray ◽  
H Nmr ◽  
Ft Ir ◽  
Harsh Conditions ◽  
Thermal Stability Of ◽  
Polysulfide Polymer

AbstractPolysulfide polymers usually are prepared by the reaction of different dihalide compounds with disodium polysulfides. In this field, dihalides are expensive and produced from halogenation of organic compounds by different methods with harsh conditions. To overcome this problem, in this work, sunflower oil as polyunsaturated oil was used as precursor to produce polyhalide compound. In this field, double bonds of oil were applied as functional groups to halogenate the sunflower via benzoyl peroxide-catalyzed reaction with hydrochloric acid. Also, Na2S3 was synthesized via the reaction between sulfur and sodium hydroxide. Then, halogenated oil was reacted with Na2S3 to produce sunflower oil-based polysulfide polymer. Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H NMR) were used to characterize the structure of sunflower oil and synthesized polysulfide polymer. The content of halogenation was also obtained via energy-dispersive X-ray spectroscopy (EDX). Thermal stability of synthesized polymer was determined by means of thermal gravimetric analysis (TGA) and glass transition temperature was investigated by differential scanning calorimetry (DSC).

scholarly journals Effects of Metformin on Bone-derived Mesenchymal Stromal Cell–breast Cancer Cell Line Interactions

2021 ◽  
Author(s):  
Maryana Teufelsbauer ◽  
Clemens Lang ◽  
Adelina Plangger ◽  
barbara Rath ◽  
Doris Moser ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Line ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Breast Cancer Cell Line ◽  
Cancer Cell Line ◽  
Cancer Cell Lines ◽  
Breast Cancer Cell Lines ◽  
Breast Cancer Patients

Abstract Metformin is used to treat patients with diabetes mellitus and that was found to lower the incidence of cancer. The present study investigated the effects of metformin on human bone-derived mesenchymal stromal cells (BM-MSC) and their breast cancer cell line interactions. BM-MSCs were tested for growth stimulation and migration controlling activity on four breast cancer cell lines employing MTT tests, migration scratch tests and assays of the expression of adipokines in Western Blot arrays. Compared to breast cancer cell lines, metformin significantly inhibited the proliferation of BM-MSC lines. Pretreatment of BM-MSCs with metformin showed variable effects on breast cancer cell lines depending on the specific BM-MSC cancer line combination. Metformin significantly impaired the migration of MDA-MB-231 and MDA-MB-436 in response to conditioned media (CM) of drug pretreated BM-MSCs. Metformin-induced alterations of adipokines by BM-MSC CM indicated increased osteogenic signaling and possibly impairment of metastasis. The anticancer activities of metformin seem to be the result of direct and indirect mechanisms. A lower metformin-induced protumor activity of BM-MSCs in the bone microenvironment seem to contribute to the anticancer effects of this drug in breast cancer patients.

scholarly journals Immunoprofiling of Breast Cancer Antigens Using Antibodies Derived from Local Lymph Nodes

Cancers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 682 ◽  
Author(s):  
Anna Rachel Young ◽  
Jessica Da Gama Duarte ◽  
Rhiannon Coulson ◽  
Megan O’Brien ◽  
Siddhartha Deb ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Lymph Nodes ◽  
Cancer Patients ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Tumor Antigens ◽  
Cancer Cell Line ◽  
Protein Microarrays ◽  
Breast Cancer Cell Lines ◽  
Breast Cancer Patients

Tumor antigens are responsible for initiating an immune response in cancer patients, and their identification may provide new biomarkers for cancer diagnosis and targets for immunotherapy. The general use of serum antibodies to identify tumor antigens has several drawbacks, including dilution, complex formation, and background reactivity. In this study, antibodies were generated from antibody-secreting cells (ASC) present in tumor-draining lymph nodes of 20 breast cancer patients (ASC-probes) and were used to screen breast cancer cell lines and protein microarrays. Half of the ASC-probes reacted strongly against extracts of the MCF-7 breast cancer cell line, but each with a distinct antigen recognition profile. Three of the positive ASC-probes reacted differentially with recombinant antigens on a microarray containing cancer-related proteins. The results of this study show that lymph node-derived ASC-probes provide a highly specific source of tumor-specific antibodies. Each breast cancer patient reacts with a different antibody profile which indicates that targeted immunotherapies may need to be personalized for individual patients. Focused microarrays in combination with ASC-probes may be useful in providing immune profiles and identifying tumor antigens of individual cancer patients.

scholarly journals Potato Peels Mediated Synthesis of Cu(II)-nanoparticles from Tyrosinase Reacted with bis-(N-aminoethylethanolamine) (Tyr-Cu(II)-AEEA NPs) and Their Cytotoxicity against Michigan Cancer Foundation-7 Breast Cancer Cell Line

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6665
Author(s):  
Akbar Idhayadhulla ◽  
Aseer Manilal ◽  
Anis Ahamed ◽  
Saud Alarifi ◽  
Gurusamy Raman
Keyword(s):  
Breast Cancer ◽  
Copper Nanoparticles ◽  
Anticancer Agents ◽  
Uv Spectroscopy ◽  
Cancer Cell Line ◽  
Synthesis Of Nanoparticles ◽  
Cytotoxicity Activity ◽  
Particle Size Analyzer ◽  
Potato Peels ◽  
Ft Ir

The synthesis of nanoparticles is most important in the context of cancer therapy, particularly copper nanoparticles, which are widely used. In this work, copper(II)-tyrosinase was isolated from potato peel powder. Copper nanoparticles (Tyr-Cu(II)-AEEA NPs) were synthesized via the reaction of tyrosinase with N-aminoethylethanolamine to produce Cu(II)-NPs and these were characterized by means of FT-IR, UV-Spectroscopy, XRD, SEM, TEM and a particle size analyzer. These Tyr-Cu(II)-AEEA NPs were tested as anticancer agents against MCF-7 breast cancer cells. Fluorescence microscopy and DNA fragmentation were also performed, which revealed the inhibiting potentials of Cu(II)-AEEA NPs and consequent cell death; Tyr-Cu(II)-AEEA NPs show potential cytotoxicity activity and this nano material could be contemplated as an anticancer medicament in future investigations.

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