|MicroRNA let-7b targets Akt-1: possible implication for skeletal muscle atrophy in diabetic rats|
Sousa, TA*; Mitsuo, K**; Paula-Gomes, S*; Silva, VAO*; Tragante, V*; Zanon, NM*; Wang M**; Kettelhut, IC*; Natarajan R**; De Lucca, FL*
In diabetic animals there is marked muscle atrophy, but the molecular mechanisms underlying muscle wasting are still unclear. Our in silico analysis and the inverse correlation between let-7b and Akt1 expression in soleus of diabetic animals indicated Akt1 as a potential let-7b target. The assays of luciferase and inhibition of endogenous expression of Akt1 with mimic let-7b were used to validate Akt1 as a direct target of let-7b.
|Microsphere Approach to Gene Silencing|
J. M. Cardenas-Maestre, A. Seth, R. M. Sanchez-Martin
The design of a new generation of bio-compatible polymeric particles (by introduction of polycationic chains as terminal groups) that can be employed as transfecting agents.
|Argonaute 1 regulates germ cell division and oocyte determination in Drosophila melanogaster|
Mohd Ghows Mohd Azzam and Ji-Long Liu
We find that Ago1 protein is be enriched in the oocytes and also distributed in the cytoplasm of follicle cells. Using mitotic clonal analysis, we analyze multiple ago1 mutant alleles. Here, we find that the oocyte do not form in many mutant clones and they only have 8 nurse cells. These results indicate that the level of Ago1 affects the number of cystoblast divisions and oocyte determination.
|NEW TECHNOLOGIES FOR FFPE SAMPLES: Improved RNA Isolation and novel cDNA priming for qPCR and for universal mRNA amplification|
G Krupp1; R Jaggi2; D Englert3, DJ Wilson3, S Laken3, S, ES Quabius4
Improved FFPE RNA isolation, novel TR priming for complete recovery of FFPE mRNA fragments. Differential expression defines Scores for tumor classification: comparing fresh-frozen with FFPE. Novel flow-through Ziplex microarray platform demonstrates MAQC performance level of data obtained with FFPE samples.
|FOXP3 Gene Expression in Multiple Sclerosis patients before and after Mesenchymal Stem Cell therapy|
Maryam Mohajeri, Mandana Mohyeddin Bonab, Behrooz Nikbin, Ali Farazmand
Multiple Sclerosis (MS) is a chronic inflammatory demyelinating disorder of the CNS. No successful treatment for MS, but one therapeutic strategy in research is the use of bone marrow-derived mesenchymal stem cells (MSC). We studied a group of MS patients who underwented MSCs, assayed for expression of a transcription factor, FOXP3, as a specific marker of MS amelioration in peripheral blood. qRT-PCR on PBMCs showed higher FoxP3 levels.
|miR-21 upregulation and miR-128a downregulation in human glioblastomas|
P. Costa1,2, A. Cardoso1, L. Almeida1,3, M.C. Pedroso de Lima1,2, P. Canoll4, J. Bruce5
miRNA deregulation is an important hallmark on cancer development and progression. This work shows that miR-21 is overexpressed is human glioblastoma samples and cell lines, whereas miR-128a is highly downregulated on these tumours. miRNA modulation using antisense oligonucleotides and/or miRNA precursor molecules decreased tumor cell viability. Thus, targeting deregulated miRNAs may constitute a complementary/alternative approach on the treatment of glioblastomas and other miRNA-related maligna
|Receptor Interacting Protein 140 (RIP140) silencing via RNAi interferes with fatty acid metabolism but not with glucose uptake in L6 muscle cells|
Constantinescu, S., Turcotte, L.P
The role of RIP140 in the regulation of fatty acid uptake, oxidation and glucose uptake was investigated in muscle cells using RNAi technique. Cells were incubated ±insulin before measurement of glucose and FA kinetics. We suggest that reducing RIP140 expression in muscle has no impact on the regulation of GU but leads to high rates of FAU and reduced sensitivity to insulin as it pertains to FA metabolism.
|Co-rgulation of tumour suppressor gene programmed cell death 4 (PDCD4) by miR-21 and miR-499 in head and neck cancer|
Xiaoying Zhang 1, 2, Barbara Rose 1, 2, Rosetta Martiniello-Wilks3 and Nham Tran 1, 2, 3
This study has identified differentially expressed miRNAs in tonsil cancers and provides new evidence for co-regulation of the oncogene PDCD4 by miR021 and miR-499
|Protein array-based screening of autoantibody signatures|
Zingaretti C., Arigò M., Colombatto P., Brunetto M., Muratori L., Bonino F., Bianchi F., Pagani M., De Francesco R., Abrignani S., Bombaci M.
The evidence for an association between autoimmune diseases and chronic HCV infection has been clearly established. To this aim, a protein array was employed to analyze serum samples of HCV patients w/wo autoimmune complications, of patients with autoimmune hepatitis but not infected with HCV and of healthy donors as controls. A panel of autoantigens able to discriminate among the three groups of patients was identified for potential use as biomarkers.