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Cancer Gene Therapy

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https://www.readbyqxmd.com/read/28281524/mir-216b-increases-cisplatin-sensitivity-in-ovarian-cancer-cells-by-targeting-parp1
#1
Y Liu, Z Niu, X Lin, Y Tian
Cisplatin resistance hinders the efficacy of chemotherapy in ovarian cancer. MicroRNAs (miRs) have been implicated in drug resistance in anti-cancer chemotherapy. We compared the expression profiles of miRs between cisplatin-resistant and cisplatin-sensitive ovarian cancer cells, and found that miR-216b was significantly downregulated in cisplatin-resistant ovarian cancer cells. To investigate its molecular mechanism, we performed cell viability and apoptosis assays in cisplatin-resistant ovarian cells, and found that miR-216b reduced cell viability and promoted apoptosis...
March 10, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28256509/customized-laboratory-tlr4-and-tlr2-detection-method-from-peripheral-human-blood-for-early-detection-of-doxorubicin-induced-cardiotoxicity
#2
A L Pop-Moldovan, N-M Trofenciuc, D A Dărăbanţiu, C Precup, H Branea, R Christodorescu, M Puşchiţă
Cancer treatments can have significant cardiovascular adverse effects that can cause cardiomyopathy and heart failure with reduced survival benefit and considerable decrease in the use of antineoplastic therapy. The purpose of this study is to assess the role of TLR2 and TLR4 gene expression as an early marker for the risk of doxorubicin-induced cardiomyopathy in correlation with early diastolic dysfunction in patients treated with doxorubicin. Our study included 25 consecutive patients who received treatment with doxorubicin for hematological malignancies (leukemia, lymphomas or multiple myeloma), aged 18-65 years, with a survival probability>6 months and with left ventricular ejection fraction>50%...
March 3, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28186089/adenovirus-mediated-tipe2-overexpression-inhibits-gastric-cancer-metastasis-via-reversal-of-epithelial-mesenchymal-transition
#3
H Yin, X Huang, M Tao, Q Hu, J Qiu, W Chen, J Wu, Y Xie
Tumor necrosis factor (TNF)-alpha-induced protein 8-like 2 (TNFAIP8L2; also termed TIPE2) has been shown to be involved in both the immune-negative modulation and cancer. We previously found that TIPE2 is lost in human gastric cancer, and TIPE2 restoration suppresses gastric cancer growth by induction of apoptosis and impairment of protein kinase B (PKB/AKT) and extracellular signal-regulated kinase-1/2 (ERK1/2) signaling. However, its correlation with epithelial-mesenchymal transition (EMT) in gastric cancer is largely elusive...
February 10, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28186088/current-status-of-immunotherapy-for-gastrointestinal-stromal-tumor
#4
REVIEW
Y Tan, J C Trent, B A Wilky, D A Kerr, A E Rosenberg
Gastrointestinal stromal tumors (GIST) contain tumor-infiltrating immune cells and their presence provides an opportunity and rationale for developing effective forms of immunotherapy. The types of tumor-infiltrating inflammatory cells and relevant immune checkpoint inhibitors are the focus of active investigation. The most numerous tumor-infiltrating inflammatory cells are tumor-associated macrophages (TAMs) and CD3+ T cells. Studies have shown that patients with GISTs that harbor increased numbers of CD3+ T cells have better outcomes...
February 10, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28186087/baculovirus-directly-activates-murine-nk-cells-via-tlr9
#5
T Moriyama, T Suzuki, M O Chang, M Kitajima, H Takaku
The importance of natural killer (NK) cells in innate immune responses against tumors or viral infections enhances the appeal of NK cell-based immunotherapeutic approaches. We have recently reported that baculovirus (BV)-infected dendritic cells (DCs; BV-DCs) induce antitumor immunity against established tumors in mice. These antitumor effects were CD8(+) T-cell and NK cell dependent; however, they were found to be CD4(+) T-cell independent. In this study, we investigated the involvement of Toll-like receptor 9 (TLR9) in the process of BV recognition by NK cells...
February 10, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28128214/promising-gene-delivery-system-based-on-polyethylenimine-modified-silica-nanoparticles
#6
M Babaei, H Eshghi, Kh Abnous, M Rahimizadeh, M Ramezani
This article reports on the synthesis and full characterization of innovative silica-based nanoparticle composed of fumed silica as a core decorated with polyethylenimine (PEI) with different molecular weights (25, 10 and 1.8 kDa). Wide range of analytical, spectroscopic, and microscopic methods (TEM, DLS, ζ potential, elemental analysis (EA), TNBS and FTIR) were used to characterize the nanoparticles. Furthermore, transfection efficiency of these nanoparticles as non-viral vector was examined. The silica-PEI conjugates retained both the ability of PEI to fully condense plasmid DNA at low N/P ratios and suitable buffering capacity at the endosomal pH range...
January 27, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28084317/therapeutic-vaccination-based-on-side-population-cells-transduced-by-the-granulocyte-macrophage-colony-stimulating-factor-gene-elicits-potent-antitumor-immunity
#7
C Sakamoto, H Kohara, H Inoue, M Narusawa, Y Ogawa, L Hirose-Yotsuya, S Miyamoto, Y Matsumura, K Yamada, A Takahashi, K Tani
Among cancer immunotherapies, granulocyte-macrophage colony-stimulating factor (GM-CSF) gene-transduced tumor cell vaccine (GVAX) therapies appear promising and have been shown to be safe and effective in multiple clinical trials. However, the antitumor efficacies of GVAX therapy alone are in some cases limited. Here we showed that GVAX therapy targeting cancer stem cells (CSCs) substantially suppressed tumor development in syngeneic immunocompetent mice recapitulating normal immune systems. CSCs were isolated as side population (SP) cells from 4T1 murine breast carcinoma cell line and transduced with GM-CSF gene delivered by non-transmissible Sendai virus (4T1-SP/GM)...
January 13, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28186090/downregulation-of-microrna-145-promotes-epithelial-mesenchymal-transition-via-regulating-snail-in-osteosarcoma
#8
Z Zhang, M Zhang, Qinghan Chen, Q Zhang
Metastasis is the principal cause of cancer death and occurs through multiple, complex processes. Epithelial to mesenchymal transition (EMT) is an important process during embryonic development and has also been hypothesized to exhibit a significant role in cancer cell invasion and metastasis. MicroRNAs (miRNAs) are a class of widespread noncoding RNAs. In recent years, many studies have shown that miRNAs could influence the signaling pathways and downstream events that define EMT on a molecular level. However, the exact role and mechanisms of miR-145 in EMT of osteosarcoma (OS) was unknown...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28106046/obp-401-gfp-telomerase-dependent-adenovirus-illuminates-and-kills-high-metastatic-more-effectively-than-low-metastatic-triple-negative-breast-cancer-in-vitro
#9
S Yano, K Takehara, H Kishimoto, H Tazawa, Y Urata, S Kagawa, M Bouvet, T Fujiwara, R M Hoffman
We previously described the development of a highly-invasive, triple-negative breast cancer (TNBC) variant using serial orthotopic implantation of MDA-MB-231 human breast cancer in nude mice. The isolated variant is highly invasive in the mammary gland and metastasized to lymph nodes in 10 of 12 mice compared with 2 of 12 of the parental cell line. OBP-401 is a telomerase-dependent cancer-specific, green fluorescent protein (GFP)-expressing adenovirus. OBP-401 was used to infect parental MDA-MB-231P cells and high-metastatic MDA-MB-231H and MDA-MB-231HLN isolated from a lymph node metastasis and MDA-MB-231HLM isolated from a lung metastasis...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28084319/tumor-associated-immune-factors-are-associated-with-recurrence-and-metastasis-in-non-small-cell-lung-cancer
#10
X Yan, S-C Jiao, G-Q Zhang, Y Guan, J-L Wang
Dynamic interaction between tumor cells and the microenvironment is critical for tumorigenesis, and cancer immunosurveillance plays an important role in the tumor evolution. In some tumors (such as esophageal cancer, pancreatic cancer and colorectal cancer), studies have shown that the number of tumor-infiltrating lymphocytes (TILs) has a significant relationship with the prognosis, but there is little research on the prognosis of TILs and non-small cell lung cancer (NSCLC) has been performed. Therefore, it is necessary to discover the relationship between the TILs and cytokines with NSCLC prognosis and metastasis in patients...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28084318/apoptosis-inducing-and-antiproliferative-effect-by-inhibition-of-mir-182-5p-through-the-regulation-of-casp9-expression-in-human-breast-cancer
#11
M Sharifi, A Moridnia
Recent advances in molecular medicine and gene therapy have offered new effective achievements in the treatment of cancers. One of the molecular research lines for the diagnosis and treatment of cancer is the use of microRNAs (miRNAs), which are single-stranded noncoding RNAs. miRNAs are involved in the post-transcriptional regulation of gene expression and have a role in the growth, differentiation, cell death and cancer development. One of the miRNAs that showed upregulation in breast cancer is miR-182-5p...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982021/circulating-exosomes-and-exosomal-micrornas-as-biomarkers-in-gastrointestinal-cancer
#12
REVIEW
R Nedaeinia, M Manian, M H Jazayeri, M Ranjbar, R Salehi, M Sharifi, F Mohaghegh, M Goli, S H Jahednia, A Avan, M Ghayour-Mobarhan
The most important biological function of exosomes is their possible use as biomarkers in clinical diagnosis. Compared with biomarkers identified in conventional specimens such as serum or urine, exosomal biomarkers provide the highest amount of sensitivity and specificity, which can be attributed to their excellent stability. Exosomes, which harbor different types of proteins, nucleic acids and lipids, are present in almost all bodily fluids. The molecular constituents of exosomes, especially exosomal proteins and microRNAs (miRNAs), are promising as biomarkers in clinical diagnosis...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27934882/stable-knockdown-of-creb-hif-1-and-hif-2-by-replication-competent-retroviruses-abrogates-the-responses-to-hypoxia-in-hepatocellular-carcinoma
#13
D Shneor, R Folberg, J Pe'er, A Honigman, S Frenkel
The fast proliferation of tumor cells develops faster than the vasculature, resulting, in most malignant tumors, in generation of hypoxic regions. Hypoxia renders solid tumors resistant to radiation and chemotherapeutics while providing opportunities for tumor-selective therapies targeting tumor hypoxia. Here we exploit two properties of tumors: propagation of tumor cells and ongoing generation of hypoxic regions to construct a system that preferentially leads to the death of tumor cells and thus hinders tumor growth...
February 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982020/intrabody-targeting-vascular-endothelial-growth-factor-receptor-2-mediates-downregulation-of-surface-localization
#14
E Alirahimi, A Ashkiyan, F Kazemi-Lomedasht, K Azadmanesh, M Hosseininejad-Chafi, M Habibi-Anbouhi, R Moazami, M Behdani
Angiogenesis is among the most important mechanisms that helps cancer cells to survive, grow and undergo metastasis. Therefore, inhibiting angiogenesis will suppress tumor growth. Vascular endothelial growth factor (VEGF) and its receptor (VEGFR) are believed to be important players of angiogenesis. The goal of this study was to evaluate the success of a novel nanobody against VEGFR2 in tethering its target inside the endoplasmic reticulum and preventing its transport to the cell membrane. Nanobody sequence was cloned in a mammalian vector in fusion with green fluorescent protein and a KDEL retention signal...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982019/the-associations-of-tert-clptm1l-variants-and-tert-mrna-expression-with-the-prognosis-of-early-stage-non-small-cell-lung-cancer
#15
Z Chen, J Wang, Y Bai, S Wang, X Yin, J Xiang, X Li, M He, X Zhang, T Wu, P Xu, H Guo
Lung cancer is the leading cause of cancer-related death in the world. Several genome-wide association studies (GWAS) have identified TERT-CLPTM1L as plausible causative locus for lung cancer development. This study aimed to investigate the associations of genetic variations in TERT-CLPTM1L and the expression level of TERT with the survival of early stage non-small cell lung cancer (NSCLC) patients. We selected three single-nucleotide polymorphisms of TERT-CLPTM1L (rs2853669, rs2736108 and rs31490) and genotyped in 140 early stage NSCLC patients by TaqMan assay...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982018/sio2-antisense-molecules-covered-by-nepetalactone-extracted-from-nepeta-gloeocephala-inhibits-ilk-phosphorylation-and-downstream-pkb-akt-signaling-in-hela-cells
#16
M Dehghany Ashkezary, F Aboee-Mehrizi, P Moradi
In this study, the anticancer property of SiO2@antisense molecules (SiO2@AMs) and SiO2@AM covered by nepetalactone (SiO2@AM/CN), extracted from Nepeta gloeocephala, was investigated. Here integrin-linked kinase (ILK) phosphorylation and protein kinase B/AKT (PKB/AKT) signaling was studied when HeLa cells were exposed to SiO2@AM and SiO2@AM/CN. First, N. gloeocephala was identified at the Iranian National Herbarium. Then, its essential oil (EO) was obtained by the hydrodistillation method. In the next step, 4aα,7α,7aα-nepetalactone was extracted from the EO, based on the spectroscopic data...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982017/extracellular-vesicle-mediated-suicide-mrna-protein-delivery-inhibits-glioblastoma-tumor-growth-in-vivo
#17
E P Erkan, D Senfter, S Madlener, G Jungwirth, T Ströbel, N Saydam, O Saydam
Extracellular vesicles (EVs) are considered as important mediators of intercellular communication, which carry a diverse repertoire of genetic information between cells. This feature of EVs can be used and improved to advance their therapeutic potential. We have previously shown that genetically engineered EVs carrying the suicide gene mRNA and protein-cytosine deaminase (CD) fused to uracil phosphoribosyltransferase (UPRT)-inhibited schwannoma tumor growth in vivo. To further examine whether this approach can be applied to other cancer types, we established a subcutaneous xenograft glioblastoma tumor model in mice, as glioblastoma represents the most common primary brain tumor, which is highly aggressive compared with the original schwannoma tumor model...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982016/exosomes-and-breast-cancer-a-comprehensive-review-of-novel-therapeutic-strategies-from-diagnosis-to-treatment
#18
REVIEW
C-Y Wu, S-L Du, J Zhang, A-L Liang, Y-J Liu
Exosomes are nanosized vesicles, released by various cells, which have essential roles in intercellular communication locally and systemically through transporting their contents such as proteins and lipids as well as RNA. It was clear that the element of contents in exosomes reassembled with the emerging of cancers. Over the past decade, researchers paid more attention to the role of exosomes in breast cancer. The purpose of this review was to discuss the details of the biological characteristics of exosomes in breast cancer...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27934883/preclinical-evaluation-of-radiation-and-systemic-rgd-targeted-adeno-associated-virus-phage-tnf-gene-therapy-in-a-mouse-model-of-spontaneously-metastatic-melanoma
#19
T J Quinn, N Healy, A Sara, E Maggi, C S Claros, R Kabarriti, L Scandiuzzi, L Liu, J Gorecka, A Adem, I Basu, Z Yuan, C Guha
The incidence of melanoma in the United States continues to rise, with metastatic lesions notoriously recalcitrant to therapy. There are limited effective treatment options available and a great need for more effective therapies that can be rapidly integrated in the clinic. In this study, we demonstrate that the combination of RGD-targeted adeno-associated virus phage (RGD-AAVP-TNF) with hypofractionated radiation therapy results in synergistic inhibition of primary syngeneic B16 melanoma in a C57 mouse model...
December 9, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27910859/t-cell-programming-in-pancreatic-adenocarcinoma-a-review
#20
REVIEW
Y D Seo, V G Pillarisetty
Despite recent advancements in multimodal therapy, pancreatic ductal adenocarcinoma (PDA) continues to have a dismal prognosis. In the era of burgeoning immune therapies against previously difficult-to-treat malignancies, there has been growing interest in activating the immune system against PDA; however, unlike in other cancers such as melanoma and lymphoma, immunotherapy has not yielded many clinically significant results. To harness these mechanisms for therapeutic use, an in-depth understanding of T-cell programming in the immune microenvironment of PDA must be achieved...
December 2, 2016: Cancer Gene Therapy
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