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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Colon cancer,Oncogenic and suppressor micro RNAs (miRNAs),SD-208,TGF-β receptor 1 (TGβRI) kinase inhibitor
- چکیده:
- چکیده انگلیسی:
Objective(s):Transforming growth factor-β(TGF-β) is involved in colorectal cancer (CRC). The SD-208 acts as an anti-cancer agent in different malignancies via TGF-β signaling. This work aims to show the effect of manipulation of TGF-β signaling on some miRNAs implicated in CRC.
Materials and Methods: We investigated the effects of SD-208 on SW-48, a colon adenocarcinoma cell line. The cell line was treated with 0.5, 1 and 2 μM concentrations of SD-208. Then, the xenograft model of colon cancer was established by subcutaneous inoculation of SW-48 cell line into the nude mice. The animals were treated with SD-208 for three weeks. A quantitative real-time PCR was carried out for expression level analysis of selected oncogenic (miR-21, 31, 20a and 135b) and suppressor-miRNAs (let7-g, miR-133b, 145 and 200c). Data were analyzed using the 2-∆∆CT method through student’s t-test via the GraphPad Prism software.
Results: Our results revealed that SD-208 could significantly down-regulate the expression of one key onco-miRNA, miR-135b, in either SW-48 colon cells (P=0.006) or tumors orthotopically implanted in nude mice (P=0.018). Our in silico study also predicted that SD-208 could modulate the expression of potential downstream tumor suppressor targets of the miR135b.
Conclusion: Our data provide novel evidence that anticancer effects of SD-208 (and likely other TGF-β inhibitors) may be owing to their ability to regulate miRNAs expression.- انتشار مقاله: 13-07-1394
- نویسندگان: Abolfazl Akbari,Mohammad Hossein Ghahremani,Gholam Reza Mobini,Mahdi Abastabar,Javad Akhtari,Manzar Bolhassani,Mansour Heidari
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Pacific Journal of Cancer Prevention
- نوع مقاله: Journal Article
- کلمات کلیدی: Diagnosis,Prognosis,Survival,long non-coding RNA,PCAT-1
- چکیده:
- چکیده انگلیسی: Long non-coding RNA (lncRNA) prostate cancer associated transcript 1 (PCAT-1) has been identified as a potential
biomarker for the diagnosis and prognosis of various cancers. We performed this systematic review and meta-analysis
to evaluate the role of dysregulation as well as the biological and clinical significance of lnc-PCAT-1 for predicting the
malignancy status in several cancers. Two independent reviewers conducted an extensive search in electronic databases
of Medline, Embase, Scopus, Web of Science and PubMed until the December of 2017. Five articles investigating the
clinical significance of lncRNA PCAT-1, including 996 patients, were analyzed. Our results revealed that the increased
PCAT-1 expression was related to overall survival (OS) (HR = 1.9, 95%CI: 1.13-3.18, P=0.015). Also, pooled results
of the diagnostic data analysis demonstrated that PCAT-1 has a sensitivity of 0.59 and specificity of 0.66 for cancer
diagnosis. Moreover, pooled area under curve was 0.62 (95% CI: 058–0.69). This meta-analysis revealed that lncRNA
PCAT-1 could be served as a potential diagnostic and prognostic biomarker in various solid tumors.- انتشار مقاله: 13-12-1396
- نویسندگان: Atefeh Talebi,Abolfazl Akbari,Gholam Reza Mobini,Sara Ashtari,Mohamad Amin Pourhoseingholi
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Pacific Journal of Cancer Prevention
- نوع مقاله: Journal Article
- کلمات کلیدی: Colorectal cancer,CD34,Homeodomain protein TGIF2LX,Ki-67,Transforming growth factor-beta (TGF-β)
- چکیده:
- چکیده انگلیسی:
Background: TGIF2LX (transforming growth factor beta-induced factor 2 like, X-linked) is a homeodomain (HD) protein that has been implicated in the negative regulation of cell signaling pathways. The aim of this study was to investigate the possible functions of TGIF2LX in colon adenocarcinoma cells. Methods: The human SW48 cell line was transfected with cDNA for the wild-type TGIF2LX gene and gene/protein over-expression was confirmed by microscopic analysis, real time RT-PCR and Western blotting techniques. In vitro cell proliferation was evaluated by MTT and BrdU assays. After developing a colon tumor model in nude mice, immunohistochemical (IHC) staining of tumor tissue was carried out for Ki-67 (proliferation) and CD34 (angiogenesis) markers. To predict potential protein partners of TGIF2LX, in-silico analysis was also conducted. Results: Obtained results showed over-expression of TGIF2LX as a potential transcription factor could inhibit either proliferation or angiogenesis (P<0.05) in colon tumors. In-silico results predicted interaction of TGIF2LX with other proteins considered important for cellular development. Conclusions: Our findings provided evidence of molecular mechanisms by which TGIF2LX could act as a tumor suppressor in colon adenocarcinoma cells. Thus, this gene may potentially be a promising option for colon cancer gene-based therapeutic strategies.- انتشار مقاله: 23-11-1395
- نویسندگان: Abolfazl Akbari,Shahram Agah,Mansour Heidari,Gholam Reza Mobini,Ebrahim Faghihloo,Arash Sarveazad,Alireza Mirzaei
- مشاهده