Project description:Effects of TRPC1 silencing on whole-transcriptome gene expression were determined in Huh7 hepatocellular carcinoma cells using whole-transcriptome gene expression profiling.
Project description:Effects of TRPC1 silencing on whole-transcriptome gene expression were determined in human primary aortic vascular smooth muscle cells using whole-transcriptome gene expression profiling.
Project description:Muscle growth is a quantitative trait controlled by multiple genes in animals. Previously, we showed that transient receptor potential channel 1 (TRPC1) was a differentially expressed gene in muscle tissues between pig breeds with divergent growth traits using RNA-seq. In this study, we characterized the expression profiles of TRPC1 in different tissues and various pig breeds, and found that TRPC1 is highly expressed in muscle. We found two effective single nucleotide polymorphism (SNP) sites (C-1763T and C-1604T) in TRPC1 that could affect the activity of the promoter region and regulate the growth rate of pigs. Functionally, we used RNAi and overexpression to illustrate that TRPC1 promotes myoblast proliferation, migration, differentiation, fusion, and muscle hypertrophy, while inhibiting muscle degradation, and that these processes may be mediated by activating the Wnt signaling pathways. Taken together, our results revealed that TRPC1 may be a promoter of muscle growth and development and it plays a role in Wnt-mediated myogenesis.
Project description:To investigate the mechanism of TRPC1 or TRPC6 on the regulation of endotoxemic cardiac dysfunction, we established Trpc1-/- and Trpc6-/- mice. LPS-challenged endotoxemic mouse model was built, and the gene expression profile was analyzed using data obtained from RNA-seq of WT, LPS-challenged WT, LPS-challenged Trpc1-/-, and LPS-challenged Trpc6-/- mice hearts.
Project description:Transient receptor potential channel 1 (TRPC1) is a widely expressed mechanosensitive ion channel located within the endoplasmic reticulum membrane, crucial for refilling depleted internal calcium stores during activation of calcium-dependent signaling pathways. Here, we have demonstrated that TRPC1 activity is protective within cartilage homeostasis in the prevention of cellular senescence associated cartilage breakdown during mechanical and inflammatory challenge. We revealed that TRPC1 loss is associated with early stages of osteoarthritis (OA) and plays a non-redundant role in calcium signaling in chondrocytes. Trpc1-/- mice subjected to destabilization of the medial meniscus induced OA developed a more severe OA phenotype than wild type controls. During early OA development, Trpc1-/- mice displayed an increased chondrocyte survival rate, however remaining cells displayed features of senescence including p16INK4a expression and decreased Sox9. RNA sequencing identified differentially expressed genes related to cell number, apoptosis and extracellular matrix organization. Trpc1-/- chondrocytes exhibited accelerated dedifferentiation, while demonstrating an increased susceptibility to cellular senescence. Targeting the mechanism of TRPC1 activation may be a promising therapeutic strategy in osteoarthritis prevention.
Project description:Expression profiling of clinically obtainable tumor specimens has been hindered by the need for microgram quantities of RNA. In vitro transcription (IVT)-based amplifications are most commonly used to amplify small quantities of RNA for microarray analysis. However, significant drawbacks exist with IVT-based amplification, and the need for alternative amplification methods remains. Herein, we validate whole transcriptome amplification (WTA), an exponential amplification technique that produces cDNA libraries and amplified target in 3 to 4 hours from nanogram quantities of total RNA using a combination of cDNA microarrays and quantitative polymerase chain reaction (PCR). We demonstrate that WTA material can serve as a "molecular archive" because a WTA cDNA library can be faithfully amplified through multiple rounds of PCR amplification, allowing it to serve as a bankable and distributable resource. To demonstrate applicability, WTA was combined with laser capture microdissection to profile frozen prostate tissues. Unlike most IVT-based and exponential amplification techniques, WTA does not depend on the presence of a poly-A tail. Thus, we demonstrate that WTA is compatible with artificially degraded RNA and RNA isolated from formalin-fixed paraffin-embedded tissues. Taken together, WTA represents a versatile approach to profile and archive cDNA from minute tumor samples and is compatible with partially degraded RNA.
Project description:Investigation of whole genome gene expression level changes in TRIB3-silenced MCF7 cells as compared to Control MCF7 cells. Analysis of activity changes of pathways for FOXO1 phosphorylation between TRIB3-silenced and Control MCF7 cells.
Project description:This study aimed to develop a method to evaluate the quality of bovine in vitro fertilized (IVF) embryos based on gene expression profiling via whole-transcriptome amplification. The expression of 11 developmentally important genes in individual bovine in vivo-derived (IVD) and IVF embryos were examined. Gene expression profiling was conducted by classifying the expression level of each gene in individual embryos as low, medium, or high. The IVF group had a higher (P < 0.01) proportion of embryos with low expression of SOX2, NANOG, and FGF4. In addition, a correlation analysis between the expression levels of each gene in individual embryos demonstrated that the relationship between gene expression differed with respect to IVD and IVF embryos. Our results suggest that the expression profiling of developmentally important genes using IVD embryos as normal controls could be a useful indicator for evaluating the quality of bovine IVF embryos.