linkstream2 microblog

A pretty cool piece on nature about people hacking old Illumina GAII https://www.nature.com/articles/d41586-018-05769-8

http://science.sciencemag.org/content/359/6376/693.full
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perspective
http://science.sciencemag.org/content/359/6376/619.full

Gene Expression Overlaps Among Psychiatric Disorders

Transcriptional profiling of post-mortem human brains reveals commonalities in the genes over- and under-expressed in schizophrenia, bipolar disorder, autism, and major depression.

Distribution of #miRNA expression across human tissues
http://nar.oxfordjournals.org/content/44/8/3865 Atlas of ~1400 RNAs in at least 1 of 61 tissues; 143 in all

https://ccb-web.cs.uni-saarland.de/tissueatlas/

5 second of footage turns into 19 hours!
https://www.youtube.com/watch?v=pudhhUEtnCI

Cell-lineage analysis in human #brain using endogenous retroelements http://www.cell.com/neuron/abstract/S0896-6273(14)01137-4 Tracing L1 insertions w/ #singlecell sequencing

Using single cell WGS of 16 neuronal cells the authors investigated two somatic insertions of L1Hs elements in an adult human brain. Using these results the authors infer that L1 somatic insertions are infrequent and ALUs and SVAs somatic retrotransposition are extremely rare. Assessing two L1Hs insertions in 32 samples across different regions of this same adult brain, they found that while one insertion was spatially restricted (2x1cm region), the other was found across all samples of the adult brain (but not found in other tissues such as Heart, Lung, etc.). The more restricted one (L1Hs#1) is inferred to have happened during the Fetal stage (first trimester) while the broader one happened earlier, approximately 2 weeks
post-fertilization. Overall the paper is clear, concise, and simple. It answers an interesting biological question: Can retrotransposition be used as a marker of cell clonal expansion? It does, although the retrotransposition frequency is very small and SNVs might support better results for the same analysis due to their higher frequency..

Cell Lineage Analysis in Human Brain Using Endogenous Retroelements http://www.sciencedirect.com/science/article/pii/S0896627314011374 Somatic events from #neuron #singlecell WGS