Project description:We report the role of leukocyte immunoglobulin-like receptor subfamily B member 4 (LILRB4)/gp49B in the regulation of exosomal miRNA composition in tumor-bearing mice by next-generation sequencing
Project description:Exosomes are small membrane bound cell-derived vesicles that are present in biological fluids include blood and cell culture medium. Exosomes contain various functional proteins, mRNAs and microRNAs (miRNAs). We used miRNA microarrays to detail the miRNA content in plasma exosomes of mice bearing A549Ago2-KO/HA-Ago2Wt and A549Ago2-KO/HA-Ago2Δ (Dm) tumors.
Project description:Cancer-associated cachexia (CAC) is a wasting syndrome caused by malignant tumors. Fat loss plays a significant role in the pathophysiology of cancer-associated cachexia. The mechanism of fat loss in CAC includes enhancement of lipolysis, inhibition of lipogenesis and browning of white adipose tissue. In order to discover potentially functional genes in white adipose tissue of CAC, we used transcriptome sequencing technology to find research-valuable genes in white adipose tissue (WAT) of CAC rodent model. C57/bl6 mice with LLC tumors were used as the in vivo model for CAC, while normal mice subcutaneously injected with phosphate buffer solution were used as the control group. Overall, our data revealed genes that were differentially expressed in the white adipose tissue of LLC tumor-bearing mice, providing a molecular framework for the investigation into CAC fat loss.
Project description:To determine the different gene signatures between primary tumor and tumor-derived exosomes, we have employed RNA-sequencing as a discovery platform to identify gene signatures of tumor-derived exosomes, taking the original tumors as a control. We subcutaneously inoculated C57BL/6 mice with Lewis lung carcinoma (LLC). Three weeks later, tumor tissues were cut and tumor-derived exosomes were isolated as described in the "treatment protocol". Then, both exosomal RNA and tumor RNA were extracted and sequenced. From sequencing, we found that exosomal RNAs showed quite different transcript profiles from tumor RNAs. Examination of different gene signatures between primary tumor and tumor-derived exosomes. 2 replicates each.
Project description:MiRNA arrays were performed for the plasma exosomes of ESCC patients before treatment. The tumor regression grade of the primary tumor (TRG-PT) was used to evaluate the therapeutic effect of chemoradiotherapy (CRT). Patients classified as Grade 3 were considered sensitive to CRT (n=4), while those classified as Grade 0 or 1a were considered resistant to CRT (n=4).
Project description:More and more studies have showed that plasma exosomal miRNAs are biomarkers for disease. The aim of the study were to investigate the miRNA profiling in plasma exosomes of patients with segmental vitiligo (SV) and to find biomarkers in plasma exosomes for patients with SV. Plasma exosomes and exosomal RNA of 7 SV patients and 8 health persons were purified by exoRNeasy Serum/Plasma Maxi Kit. The miRNA profiles of the 15 samples were sequenced using HiSeq 2500 (Illumina) and analyzed by Reads Per Million (RPM) values and edgeR algorithm. Some differently expressed miRNAs in plasma exosomes and skin tissues of the two sets were validated by qRT–PCR.A total of 85 miRNAs in plasma exosomes showed differential expression between SV patients and health persons, with a |log2(Fold Change)|≥1 and P-value < 0.05. Several miRNAs were confirmed by qRT–PCR and showed similar expression patterns between plasma exosomes and skin tissues. Our study depict the miRNAs expression profiles in plasma exosomes of SV patients and suggest that several miRNAs in plasma exosomes may serve as biomarkers for SV.
Project description:Exosomes were isolated from plasma and saliva of healthy individuals and head and neck cancer (HNSCC) patients. miRNA profiling of plasma- and saliva-derived exosomes was performed using nCounter SPRINT system. Diagnostic panels were selected from the exosomal miRNA profile.
Project description:More and more studies have showed that plasma exosomal miRNAs are biomarkers for disease. The aim of the study were to investigate the miRNA profiling in plasma exosomes of patients with non-segmental vitiligo (NSV) and to find biomarkers in plasma exosomes for patients with NSV. Plasma exosomes and exosomal RNA of 10 NSV patients and 10 health persons were purified by exoRNeasy Serum/Plasma Maxi Kit. The miRNA profiles of the 20 samples were sequenced using HiSeq 2500 (Illumina) and analyzed by Reads Per Million (RPM) values and edgeR algorithm. Some differently expressed miRNAs in plasma exosomes and skin tissues of the two sets were validated by qRT–PCR.Several miRNAs were confirmed by qRT–PCR and showed similar expression patterns between plasma exosomes and skin tissues. Our study depict the miRNAs expression profiles in plasma exosomes of NSV patients and suggest that several miRNAs in plasma exosomes may serve as biomarkers for NSV.