We proposed to detect the transcriptome/mirnaome of inner cell mass of porcine.The bottleneck for this study is that we could get very few cells ( about 10 from each blastocyst,~10 blastocyst for each fertilized porcine.We prepared 5 pigs for this experiment. So, we could get ~ 500 cells. ) Is so many cells enough for transcriptome/mirnaome analysis by Illumina Hiseq 2000? What else is worthy of note?
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Here are a couple links to resources for amplifying small amounts of RNA. I have used the first two, and they work well.
Nugen Ovation RNA-Seq:
Modified Illumina RNA-Seq protocol (look in the supplemental data):
Mmany genes from the X chromosome are expressed at the same level in female and male embryos during early Drosophila development, prior to the establishment of MSL-mediated dosage compensation, suggesting the existence of a novel mechanism.
Linear amplification of RNA:
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DSN protocol really works. We used non detectable amount of total RNA as an input for library prep and got ~30M passing reads from single GAIIx lane. Unique read was ~5M, so higher redundancy as you expected from extremely low input material, but this was great!
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The field of epigenetics has traditionally concentrated more on DNA and how changes like methylation and phosphorylation of histones impact gene expression and regulation. However, our increased understanding of RNA modifications and their importance in cellular processes has led to a rise in epitranscriptomics research. “Epitranscriptomics brings together the concepts of epigenetics and gene expression,” explained Adrien Leger, PhD, Principal Research Scientist on Modified Bases...-
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Proteins are often described as the workhorses of the cell, and identifying their sequences is key to understanding their role in biological processes and disease. Currently, the most common technique used to determine protein sequences is mass spectrometry. While still a valuable tool, mass spectrometry faces several limitations and requires a highly experienced scientist familiar with the equipment to operate it. Additionally, other proteomic methods, like affinity assays, are constrained...-
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