new cancer therapies with novel mechanisms and functions are needed to treat patients with different cancers. virotherapy is a good scenario for such treatment. the advantages of virotherapy include the potential lack of cross resistance with standard therapies and the ability to cause tumor destruction by numerous mechanisms. oncolytic virus not only possesses unique mechanisms of action that ...

background: radiation therapy is among the most conventional cancer therapeutic modalities with effective local tumor control. however, due to the development of radio-resistance, tumor recurrence and metastasis often occur following radiation therapy. in recent years, combination of radiotherapy and gene therapy has been suggested to overcome this problem. the aim of the current study was to e...

methods the current study generated two recombinant lentiviruses, plex-gcn and plex-gcp, bearing noxa and puma, respectively. transduction of both genes to hepatocarcinoma (hepg2) was verified using fluorescent microscopic analysis, western blotting, and quantitative real-time polymerase chain reaction (pcr). to evaluate the potential of noxa and puma to initiate apoptosis, a caspase-9 real-tim...

introduction: pathophysiology of cancer is based on genetic instabilities. this can explain recent important role of genetic studies in such diseases. defects can be large (on molecular scale) at the level of chromosomal or small in nucleotide level, which eventually causes to irreversible change in the cell. conventional technical methods in cancer genetics are generally based on molecular or ...

background: recently, the use of t7 rna polymerase instead of other viral and cellular promoters is increasing due to high efficacy of transcription in the cell cytoplasm by this polymerase. in order to translate the transcripts produced by t7 rna polymerase in mammalian cell lines, it is necessary to include internal ribosome entry site (ires) sequences. in addition, if sequence of poly a sign...

objective: the greatest challenge in cancer gene therapy is to achieve the high specificity and efficiency in targeting of cancer cells. because the goal of cancer gene therapy is to eradicate cancer cells, many therapeutic genes could be detrimental if unintentionally expressed in normal cells. using promoter of the genes which are expressed specifically in cancer cells or have much more expre...

background: cancer immunotherapy attempts to stimulate the immune system to reject and destroy tumors and is one of the cancer treatment strategies. recently, interluekin36 (il36) has been used as immunotherapeutic agents in cancer gene therapy. present study investigated that the il36 gene therapy effects on the regression of tumor masses in mouse model. aim of this study is determination of t...

objective(s): p-glycoprotein (p-gp) is an efflux protein, the overexpression of which has been associated with multidrug resistance in various cancers. although sirna delivery to reverse p-gp expression may be promising for sensitizing of tumor cells to cytotoxic drugs, the therapeutic use of sirna requires effective carriers that can deliver sirna intracellularly with minimal toxicity on targe...