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Full-Text Articles in Molecular Biology

End Sequence Analysis Toolkit (Esat) Expands The Extractable Information From Single-Cell Rna-Seq Data, Alan G. Derr, Chaoxing Yang, Rapolas Zilionis, Alexey Sergushichev, David Blodgett, Sambra D. Redick, Rita Bortell, Jeremy Luban, David M. Harlan, Sebastian Kadener, Dale L. Greiner, Allon Klein, Maxim N. Artyomov, Manuel Garber Oct 2016

End Sequence Analysis Toolkit (Esat) Expands The Extractable Information From Single-Cell Rna-Seq Data, Alan G. Derr, Chaoxing Yang, Rapolas Zilionis, Alexey Sergushichev, David Blodgett, Sambra D. Redick, Rita Bortell, Jeremy Luban, David M. Harlan, Sebastian Kadener, Dale L. Greiner, Allon Klein, Maxim N. Artyomov, Manuel Garber

Program in Molecular Medicine Publications and Presentations

RNA-seq protocols that focus on transcript termini are well suited for applications in which template quantity is limiting. Here we show that, when applied to end-sequencing data, analytical methods designed for global RNA-seq produce computational artifacts. To remedy this, we created the End Sequence Analysis Toolkit (ESAT). As a test, we first compared end-sequencing and bulk RNA-seq using RNA from dendritic cells stimulated with lipopolysaccharide (LPS). As predicted by the telescripting model for transcriptional bursts, ESAT detected an LPS-stimulated shift to shorter 3'-isoforms that was not evident by conventional computational methods. Then, droplet-based microfluidics was used to generate 1000 ...


Staufen Negatively Modulates Microrna Activity In Caenorhabditis Elegans, Zhiji Ren, Isana Veksler-Lublinsky, David Morrissey, Victor R. Ambros Feb 2016

Staufen Negatively Modulates Microrna Activity In Caenorhabditis Elegans, Zhiji Ren, Isana Veksler-Lublinsky, David Morrissey, Victor R. Ambros

Program in Molecular Medicine Publications and Presentations

The double-stranded RNA-binding protein Staufen has been implicated in various post-transcriptional gene regulatory processes. Here we demonstrate that the Caenorhabditis elegans homolog of Staufen, STAU-1, functionally interacts with microRNAs. Loss-of-function mutations of stau-1 significantly suppress phenotypes of let-7 family microRNA mutants, a hypomorphic allele of dicer and a lsy-6 microRNA partial loss-of-function mutant. Furthermore, STAU-1 modulates the activity of lin-14, a target of lin-4 and let-7 family microRNAs, and this modulation is abolished when the 3' untranslated region of lin-14 is removed. Deep sequencing of small RNA cDNA libraries reveals no dramatic change in the levels of microRNAs, or other ...


Tenomodulin Promotes Human Adipocyte Differentiation And Beneficial Visceral Adipose Tissue Expansion, Ozlem Senol-Cosar, Rachel J. Roth Flach, Marina Distefano, Anil K. Chawla, Sarah M. Nicoloro, Juerg R. Straubhaar, Olga T. Hardy, Hye Lim Noh, Jason K. Kim, Martin Wabitsch, Philipp E. Scherer, Michael P. Czech Feb 2016

Tenomodulin Promotes Human Adipocyte Differentiation And Beneficial Visceral Adipose Tissue Expansion, Ozlem Senol-Cosar, Rachel J. Roth Flach, Marina Distefano, Anil K. Chawla, Sarah M. Nicoloro, Juerg R. Straubhaar, Olga T. Hardy, Hye Lim Noh, Jason K. Kim, Martin Wabitsch, Philipp E. Scherer, Michael P. Czech

Program in Molecular Medicine Publications and Presentations

Proper regulation of energy storage in adipose tissue is crucial for maintaining insulin sensitivity and molecules contributing to this process have not been fully revealed. Here we show that type II transmembrane protein tenomodulin (TNMD) is upregulated in adipose tissue of insulin-resistant versus insulin-sensitive individuals, who were matched for body mass index (BMI). TNMD expression increases in human preadipocytes during differentiation, whereas silencing TNMD blocks adipogenesis. Upon high-fat diet feeding, transgenic mice overexpressing Tnmd develop increased epididymal white adipose tissue (eWAT) mass, and preadipocytes derived from Tnmd transgenic mice display greater proliferation, consistent with elevated adipogenesis. In Tnmd transgenic mice ...