Synthesis and morphological studies of Tc‐99m‐labeled lupulone‐conjugated Fe 3 O 4 @TiO 2 nanocomposite, and in vitro cytotoxicity activity on prostate cancer cell lines

Author(s):  
Elif Tutun ◽  
Volkan Tekin ◽  
Volkan Yasakcı ◽  
Ömer Aras ◽  
Perihan Ünak
Proceedings ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 40
Author(s):  
Hatice Bekci ◽  
Mustafa Cam ◽  
Ahmet Cumaoglu

Prostate cancer is one of the cause of mortality and morbidity in men. High nutritional quality mushrooms have been consumed as food for a long time and Thanks to their bioactive components, they can be used in many fields such as pharmaceuticals, cosmetic products, dietary supplements and functional food production. The purpose of the research was to evaluate these derivatives against in vitro to obtain novel specific and effective anticancer agents against prostate cancer. In the study, Amanita caesarea, Sparassis crispa, Lepista nuda, Auricularia auricula, Tricholoma terreum and Lentinus tigrinus fungi were used. Anticancer activities of the compounds were evaluated in vitro by using MTT method against PC-3 and DU-143 (androgen-independent human prostate cancer cell lines) prostate cancer cell lines. Cisplatin was used as the positive sensitivity reference standard. The most effective among these fungus species biological activity against PC3 cancer cell line (IC50 = 327.34 µM), against DU-145 (IC50 = 459.19 µM).


Antioxidants ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 211 ◽  
Author(s):  
Zhixia (Grace) Chen ◽  
Karen Suzanne Bishop ◽  
Hartono Tanambell ◽  
Peter Buchanan ◽  
Siew Young Quek

The objective of this study was to investigate the potential effect of the polysaccharides isolated from Hericium novae-zealandiae, a native New Zealand fungus, on the in vitro proliferation of prostate cancer cell lines, gene expression, acetylcholinesterase (AChE) activity, and oxidation. One water-soluble and two alkali-soluble polysaccharide fractions were isolated from H. novae-zealandiae. The proliferation of the prostate cancer cell lines DU145, LNCaP, and PC3 was evaluated following treatment with these polysaccharide fractions. It was found that the polysaccharides possess anti-proliferative activity on LNCaP and PC3 cells, with a 50% growth inhibition (IC50) value as low as 0.61 mg/mL in LNCaP. Subsequently, it was determined through via RT-qPCR assay that apoptosis was one of the possible mechanisms responsible for the anti-proliferative activity in LNCaP. This was supported by the up-regulation of CASP3, CASP8, and CASP9. An alternative, discovered in PC3, was revealed to be anti-inflammation, which was hinted at by the down-regulation of IL6 and up-regulation of IL24. The polysaccharides also exhibited antioxidant and weak AChE inhibitory activities. This is the first report on the potential health benefits of polysaccharides prepared from the New Zealand fungus, H. novae-zealandiae.


2014 ◽  
Vol 32 (4_suppl) ◽  
pp. 281-281
Author(s):  
Benjamin C. Powers ◽  
Bhaskar Das ◽  
Boumediene Bouzahzah ◽  
Peter J. Van Veldhuizen ◽  
Emma Borrego-Diaz Reyes

281 Background: Prostate cancer is the second most common cancer worldwide in males. The initial treatment in advanced cases is medical or surgical castration. The outlook declines when prostate cancer advances independently, despite the aforementioned castration. Within the last ten years, a handful of new agents have proven effective in this castration-resistant phase, but finding more effective, novel ways of treating advanced prostate cancer is warranted. MAGMAS (mitochondria-associated, granulocyte-macrophage colony stimulating factor (GM-CSF) signaling molecule) is a protein ubiquitously expressed in eukaryotic cells that plays a key role in embryonal development in a variety of species. Overexpression of MAGMAS has anti-apoptotic effects, as GM-CSF is a growth factor essential for survival, proliferation and differentiation of cells. MAGMAS and GM-CSF receptor levels have been shown to be overexpressed in prostate cancer, but do not correlate with pathological grade or clinical stage. The purpose of our study was to evaluate the efficacy of a MAGMAS inhibitor, synthesized by Dr Bhaskar Das, in androgen-dependent and androgen-independent prostate cancer cell lines, as well as in a normal prostate cell line as another control. Methods: The different cell lines were treated with MAGMAS inhibitor at various concentrations in vitro. For analysis, we used MTT Cell Proliferation assay at 24 and 48 hours, per manufacturer’s protocol. We tested MAGMAS inhibitor effect on apoptosis/necrosis, cell migration and microtubule destabilization as well. Results: After prostate cancer cell lines were treated with MAGMAS inhibitor in vitro, cell proliferation and migration decreased, apoptosis and necrosis were induced, and microtubules were destabilized, all showing more impressive results in the androgen-independent cells. MAGMAS inhibition did not affect cell proliferation in the normal prostate cells. Conclusions: In vitro studies show MAGMAS inhibition proves efficacious in both androgen-dependent and androgen-independent prostate cancer cell lines. This will be evaluated further in a xenograft mouse model.


2010 ◽  
Vol 183 (4S) ◽  
Author(s):  
Chang-Deng Hu ◽  
Bennett Elzey ◽  
Jean Poulson ◽  
Wallace Morrison ◽  
Xuehong Deng ◽  
...  

2018 ◽  
Vol 36 (6_suppl) ◽  
pp. 174-174 ◽  
Author(s):  
Alexander Zaslavsky ◽  
Mackenzie Adams ◽  
Sandra Wissmueller ◽  
Douglas Campbell ◽  
Hans Klingemann ◽  
...  

174 Background: New effective therapies for men with prostate cancer are desperately needed. Recently, cancer immunotherapy has emerged as an important new treatment strategy for prostate cancer and for castrate resistant prostate cancer (CRPC). Multiple studies have identified the heparan sulfate proteoglycan-1 Glypican 1 (GPC-1) as being overexpressed in different cancers, and also as being a possible marker of poor prognosis in several solid tumor cancers. GPC-1 has been recently identified as a potential marker for prostate cancer. The MIL-38 monoclonal antibody detects GPC-1 and an IgG1 chimeric version of this antibody has been developed for preclinical studies. Here we sought to examine MIL-38 binding to a panel of prostate cancer cell lines and examine its feasibility as a novel immunotherapeutic agent targeting GPC-1 in prostate cancer Methods: Expression of GPC-1 in CRPC cell lines was examined by Flow cytometry and Western Blotting using MIL-38 as the detector antibody. The competency of GPC-1 as an immunotherapeutic target was assessed via chimeric MIL-38 induced Antibody Dependent Cell Cytotoxicity (ADCC) using high affinity Natural Killer cells (haNKs) in vitro . Results: Flow cytometry and Western blot assessments of normal prostatic epithelial cells (i.e. RWPE-1) and cells from prostate cancer cell lines (i.e. PC-3, 22RV1, DU-145, VCaP, LNCaP, CWR-R1, and LAPC-4) revealed that only cancer cells expressed GPC-1. Enzalutamide resistant cell lines demonstrated higher expression of GPC-1 than their respective parental line. ADCC assays demonstrated enhanced haNK – prostate cancer cell cytotoxicity in the presence of chimeric MIL-38 anti-GPC-1 antibody, while the IgG1 isotype control had no effect. Conclusions: GPC-1 protein was expressed by most prostate cancer cell lines, including enhanced expression by enzalutamide resistant cells. Preliminary in vitro ADCC assay results revealed the potential utility of GPC-1 as an immunotherapeutic target in prostate cancer.


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