Abstract:
:Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) induces apoptosis in variety of cancer cells without affecting most normal cells, which makes it a promising agent for cancer therapy. However, TRAIL therapy is clinically not effective due to resistance induction. To identify novel regulators of TRAIL that can aid in therapy, protein targets whose silencing sensitized breast cancer cells against TRAIL were screened with an siRNA library against 446 human apoptosis-related proteins in MDA-231 cells. Using a cationic lipopolymer (PEI-αLA) for delivery of library members, 16 siRNAs were identified that sensitized the TRAIL-induced death in MDA-231 cells. The siRNAs targeting BCL2L12 and SOD1 were further evaluated based on the novelty and their ability to sensitize TRAIL induced cell death. Silencing both targets sensitized TRAIL-mediated cell death in MDA-231 cells as well as TRAIL resistant breast cancer cells, MCF-7. Combination of TRAIL and siRNA silencing BCL2L12 had no effect in normal human umbilical vein cells and human bone marrow stromal cell. The silencing of BCL2L12 and SOD1 enhanced TRAIL-mediated apoptosis in MDA-231 cells via synergistically activating capsase-3 activity. Hence, here we report siRNAs targeting BCL2L12 and SOD1 as a novel regulator of TRAIL-induced cell death in breast cancer cells, providing a new approach for enhancing TRAIL therapy for breast cancer. The combination of siRNA targeting BCL2L12 and TRAIL can be a highly effective synergistic pair in breast cancer cells with minimal effect on the non-transformed cells.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Thapa B,Bahadur Kc R,Uludağ Hdoi
10.1002/ijc.31079subject
Has Abstractpub_date
2018-02-01 00:00:00pages
597-606issue
3eissn
0020-7136issn
1097-0215journal_volume
142pub_type
杂志文章abstract::Cloned lines from 4 different families of B-16 melanoma cells were heated repeatedly in tissue culture at 45 degrees C with step-up time intervals. These lines included the partially heat-resistant lines previously selected at 43 degrees C(HR 43 degrees) from wheat-germ-agglutinin-resistant mutant (WGAR, HR43 degrees)...
journal_title:International journal of cancer
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doi:
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abstract::The EMS1 gene encodes an 80/85 kDa c-src substrate and localises with the CCND1 gene to chromosome 11q13. This locus is amplified in approximately 13% of human breast cancers. EMS1 gene amplification and expression were characterised in a panel of human breast cancer cell lines to determine at what levels expression i...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::We investigated the ability of endogenous and recombinant interleukin-2 (IL-2)-stimulated NK cells from normal donors and ovarian cancer patients to mediate lysis of ovarian tumors, and found that peripheral blood (PB) mononuclear cells of normal donors or cancer patients did not display tumoricidal activity against o...
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::The colo-rectum and stomach are the 2 sites for which the role of diet in the etiology of cancer is most heavily implicated. Quantitative estimates as to the proportion of cancer deaths attributable to diet vary considerably. This may be partially due to the application of the concept of population attributable risk w...
journal_title:International journal of cancer
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abstract::The association between certain human papillomaviruses (HPV) and cervical intraepithelial neoplasia (CIN) is well documented, but there is uncertainty about the strength of association and the role of co-factors is unclear. This population-based case-control study in Norwegian women 20-44 years of age included 103 cas...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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doi:10.1002/ijc.2910440103
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::In normal somatic cells, the methylation pattern of DNA is stably maintained by DNA (cytosine-5-)-methyltransferase (DNA methyltransferase). Increased expression of DNA methyltransferase has been detected in many types of human cancer and has been thought to play an important role in tumorigenesis. In our study, we de...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::Metastasis of colorectal cancer (CRC) is the leading cause of CRC-associated mortality. Angiogenin (ANG), a member of the ribonuclease A superfamily, not only activates endothelial cells to induce tumor angiogenesis, but also targets tumor cells to promote cell survival, proliferation and/or migration. However, its cl...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::Immunogenicity of a long 20-mer NY-ESO-1f peptide vaccine was evaluated in a lung cancer patient TK-f01, immunized with the peptide with Picibanil OK-432 and Montanide ISA-51. We showed that internalization of the peptide was necessary to present CD8 T-cell epitopes on APC, contrasting with the direct presentation of ...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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abstract::To understand the mechanisms underlying increased expression of Myc protein in human urinary bladder cancer, expression of c-myc mRNA and the copy number of the c-myc gene were determined. Expression of mRNA was measured by quantitative RT-PCR in 40 urothelial carcinomas and in 18 histologically normal mucosae. Mean e...
journal_title:International journal of cancer
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abstract::The diagnostic specificity of the detection of disseminated prostatic cells by reverse-transcriptase polymerase chain reaction (RT-PCR) of PSA mRNA was investigated. A sensitive nested PCR was developed. In blood samples from 10 healthy female and 10 healthy male persons examined by RT-PCR, mRNA of PSA was detected 3 ...
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