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Cancer Gene Therapy

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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
#1
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...
January 20, 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
#2
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...
January 13, 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
#3
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...
January 13, 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
#4
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/27982021/circulating-exosomes-and-exosomal-micrornas-as-biomarkers-in-gastrointestinal-cancer
#5
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...
December 16, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27982020/intrabody-targeting-vascular-endothelial-growth-factor-receptor-2-mediates-downregulation-of-surface-localization
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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/27934882/stable-knockdown-of-creb-hif-1-and-hif-2-by-replication-competent-retroviruses-abrogates-the-responses-to-hypoxia-in-hepatocellular-carcinoma
#12
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...
December 9, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27910859/t-cell-programming-in-pancreatic-adenocarcinoma-a-review
#13
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
https://www.readbyqxmd.com/read/27910858/immunosuppression-in-liver-tumors-opening-the-portal-to-effective-immunotherapy
#14
REVIEW
P Guha, J Reha, S C Katz
We have recently witnessed substantial progress with immunotherapy for selected diseases. Checkpoint inhibitors and chimeric antigen receptor T (CAR-T) cells are among the most promising agents. Whereas much of the early success with CAR-T cells has been demonstrated with hematological malignancies, important barriers remain for the application of CAR-T cell therapies for the management of metastatic solid tumors. The challenges are particularly apparent when considering primary and metastatic tumors in the liver...
December 2, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27910857/myeloid-derived-suppressor-cells-and-their-role-in-pancreatic-cancer
#15
REVIEW
M Pergamo, G Miller
Pancreatic cancer is a devastating disease and ranks as the third most common cause of cancer-related death. Like many cancers, there has been increased interest in the role of the immune system in the progression and development of pancreatic cancer. In particular, immunosuppression within the tumor microenvironment (TME) is thought to impair the host's antitumor response. In this article, we review myeloid-derived suppressor cells and their contribution to this immunosuppression within the pancreatic TME...
December 2, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27857058/molecular-imaging-and-cancer-gene-therapy
#16
REVIEW
Z Saadatpour, G Bjorklund, S Chirumbolo, M Alimohammadi, H Ehsani, H Ebrahiminejad, H Pourghadamyari, B Baghaei, H R Mirzaei, A Sahebkar, H Mirzaei, M Keshavarzi
Gene therapy is known as one of the most advanced approaches for therapeutic prospects ranging from tackling genetic diseases to combating cancer. In this approach, different viral and nonviral vector systems such as retrovirus, lentivirus, plasmid and transposon have been designed and employed. These vector systems are designed to target different therapeutic genes in various tissues and cells such as tumor cells. Therefore, detection of the vectors containing therapeutic genes and monitoring of response to the treatment are the main issues that are commonly faced by researchers...
November 18, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27857057/in-vitro-exploration-of-a-myeloid-derived-suppressor-cell-line-as-vehicle-for-cancer-gene-therapy
#17
S Denies, F Combes, C Ghekiere, S Mc Cafferty, L Cicchelero, N N Sanders
Recent research indicates that cell-mediated gene therapy can be an interesting method to obtain intratumoral expression of therapeutic proteins. This paper explores the possibility of using transfected myeloid-derived suppressor cells (MDSCs), derived from a murine cell line, as cellular vehicles for transporting plasmid DNA (pDNA) encoding interleukin-12 (IL-12) to tumors. Transfecting these cells via electroporation caused massive cell death. This was not due to electroporation-induced cell damage, but was mainly the result of the intracellular presence of plasmids...
November 18, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27834357/imaging-techniques-new-avenues-in-cancer-gene-and-cell-therapy
#18
REVIEW
Z Saadatpour, A Rezaei, H Ebrahimnejad, B Baghaei, G Bjorklund, M Chartrand, A Sahebkar, H Morovati, H R Mirzaei, H Mirzaei
Cancer is one of the world's most concerning health problems and poses many challenges in the range of approaches associated with the treatment of cancer. Current understanding of this disease brings to the fore a number of novel therapies that can be useful in the treatment of cancer. Among them, gene and cell therapies have emerged as novel and effective approaches. One of the most important challenges for cancer gene and cell therapies is correct monitoring of the modified genes and cells. In fact, visual tracking of therapeutic cells, immune cells, stem cells and genetic vectors that contain therapeutic genes and the various drugs is important in cancer therapy...
November 11, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27834356/cdc6-expression-is-induced-by-hpv16-e6-and-e7-oncogenes-and-represses-e-cadherin-expression
#19
E Faghihloo, M Sadeghizadeh, S Shahmahmoodi, T Mokhtari-Azad
Cervical cancer is one of the most common cancers in women worldwide, and its development is related to two viral oncoproteins E6 and E7 from high-risk human papillomaviruses. Aberrant expression of E-cadherin is associated with epithelial-to-mesenchymal transition (EMT), and it is frequently seen in cervical cancer. However, the underlying mechanisms involved in E-cadherin suppression in cervical cancer are not clear. We studied the effects of human papillomavirus 16 (HPV16) E6 and E7 on E-cadherin and Cdc6 (cell division cycle 6) expression in the HCT-116 cell line...
November 11, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27834354/gene-expression-profiling-to-predict-responsiveness-to-immunotherapy
#20
REVIEW
N B Jamieson, A V Maker
Recent clinical successes with immunotherapy have resulted in expanding indications for cancer therapy. To enhance antitumor immune responses, and to better choose specific strategies matched to patient and tumor characteristics, genomic-driven precision immunotherapy will be necessary. Herein, we explore the role that tumor gene-expression profiling (GEP) may have in the prediction of an immunotherapeutic response. Genetic markers associated with response to immunotherapy are addressed as they pertain to the tumor genomic landscape, the extent of DNA damage, tumor mutational load and tumor-specific neoantigens...
November 11, 2016: Cancer Gene Therapy
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