Erin Nishimura Assistant Professor

Office: Mrb 239

Phone: (970) 491-6233

Website: https://onishlab.colostate.edu

Education

  • Ph.D., University of California, Berkeley
  • B.S. University of California, Santa Cruz

About





The genome is the blueprint of the body... ...but it is unclear how genetic information is accessed to produce the shape and form of the body. Biologists have long sought to determine how transcriptomes – the sets of mRNA transcripts – change during embryogenesis in an attempt to gain insight into this question.

Why is this hard to study? With the advent of high throughput genome sequencing, it should be possible to map how transcriptomes change through embryogenesis. However, it is difficult to obtain enough material from specific cell types for use in genomic assays. Further, it is often difficult, in most animals, to link a transcriptome profile from cells in an early stage of development to their eventual fates in a later stage.

How does our lab meet these challenges? Using hand dissection coupled with low-input RNA-seq, we have generated cell-specific transcriptome profiles in early embryonic stages of the nematode worm, C. elegans. To link these genome-wide assays to specific developmental fates, we rely on the determinant property of C. elegans development. C. elegans embryos produce an invariant number of cells that divide with highly reproducible timing and certain fate allowing us to link embryonic cells in early stages to their eventual fates.

A complementary approach: In addition to using high-resolution genomic assays, we also use high-resolution microscopy (smFISH) to observe individual molecules of mRNA transcripts with sub-cellular resolution in nematode embryos. This technique allows us to test for factors (sequences and proteins) required for mRNA regulation.

Projects: We are currently focused on the following research objectives:

  • Identifying mechanisms responsible for mRNA patterning prior to the onset of zygotic transcription and in its earliest stages
  • Assessing the functional significance of cell-specific mRNAs
  • Identifying general features of lineage-specific transcriptional activation



Publications

  • mRNA localization is linked to translation regulation in the Caenorhabditis elegans germ lineage.Erin AsayoNishimura Development (Cambridge, England), 2020.
  • YTHDF2 destabilizes m6A-modified neural-specific RNAs to restrain differentiation in induced pluripotent stem cells.Erin AsayoNishimura RNA (New York, N.Y.), 2020.
  • mRNA localization is linked to translation regulation in the Caenorhabditis elegans germ lineageDylan Mckenzie Parker, Lindsay Paige Winkenbach, Samuel P. Boyson, Matt Neeley Saxton, Daidone Camryn, Zainab A. A. Al-Mazaydeh, Marc Tad Nishimura, Florian Mueller, Erin Osborne Nishimura BioRXiv, 2020.
  • Widespread roles for piRNAs and WAGO-class siRNAs in shaping the germline transcriptome of Caenorhabditis elegans.Kailee Janelle Reed, Josh Michael Svendsen, Kristen Chong Brown, Brooke Montgomery, Taylor Nicole Marks, T Vijayasarathy, Dylan Mckenzie Parker, E O. Nishimura, D L. Updike, Tai Montgomery Nucleic acids research, 2019.
  • TIR domains of plant immune receptors are NAD+-cleaving enzymes that promote cell deathL Wan, K. Essuman, R. Anderson, Y. Sasaki, F. Monteiro, E. H. Chung, E Osborne Nishimura, A. DiAntonio, J. Milbrandt, J. L. Dangl, M T. Nishimura Science, 6455, 2019.
  • A Strategy To Isolate Modifiers of Caenorhabditis elegans Lethal Mutations: Investigating the Endoderm Specifying Ability of the Intestinal Differentiation GATA Factor ELT-2.T Wiesenfahrt, J Duanmu, F Snider, D Moerman, V Au, E Li-Leger, S Flibotte, Dylan Mckenzie Parker, Craig J. Marshall, E O. Nishimura, P E. Mains, J D. McGhee G3 (Bethesda, Md.), 5, 2018.
  • Quantitating transcription factor redundancy: The relative roles of the ELT-2 and ELT-7 GATA factors in the C. elegans endoderm.A Dineen, E Osborne Nishimura, B Goszczynski, J H. Rothman, J D. McGhee Developmental biology, 2, 2018.
  • TIR-only protein RBA1 recognizes a pathogen effector to regulate cell death in Arabidopsis.Marc Tad Nishimura, R G. Anderson, K A. Cherkis, T F. Law, Q L. Liu, M Machius, Z L. Nimchuk, L Yang, E H. Chung, F El Kasmi, M Hyunh, Erin Asayo Nishimura, J E. Sondek, J L. Dangl Proceedings of the National Academy of Sciences of the United States of America, 10, 2017.
  • A Transcriptional Lineage of the Early C. elegans EmbryoS. C. Tintori, Erin Asayo Nishimura, P. Golden, J. D. Lieb, B. Goldstein Dev Cell, 4, 2016.
  • Polar Positioning of Phase-Separated Liquid Compartments in Cells Regulated by an mRNA Competition MechanismS. Saha, C. A. Weber, M. Nousch, O. Adame-Arana, C. Hoege, M. Y. Hein, Erin Asayo Nishimura, J. Mahamid, M. Jahnel, L. Jawerth, A. Pozniakovski, C. R. Eckmann, F. Jülicher, A. A. Hyman Cell, 6, 2016.
  • Probing and rearranging the transcription factor network controlling the C. elegans endodermTobias Wiesenfahrt, Erin Asayo Nishimura, Janette Y. Berg, James D. McGhee Worm, 3, 2016.
  • The function and regulation of the GATA factor ELT-2 in the C. elegans endodermT. Wiesenfahrt, J. Y. Berg, Erin Asayo Nishimura, A. G. Robinson, B. Goszczynski, J. D. Lieb, J. D. McGhee Development, 3, 2016.
  • Asymmetric transcript discovery by RNA-seq in C. elegans blastomeres identifies neg-1, a gene important for anterior morphogenesisErin Asayo Nishimura, J. C. Zhang, A. D. Werts, B. Goldstein, J. D. Lieb PLoS Genet, 4, 2015.
  • RNA-seq in the tetraploid Xenopus laevis enables genome-wide insight in a classic developmental biology model organismN. M. Amin, P. Tandon, Erin Asayo Nishimura, F. L. Conlon Methods, 3, 2014.
  • The enigmatic conservation of a Rap1 binding site in the Saccharomyces cerevisiae HMR-E silencerL. Teytelman, Erin Asayo Nishimura, B. Özaydin, M. B. Eisen, J. Rine G3 (Bethesda), 12, 2012.
  • Symmetry, asymmetry, and kinetics of silencing establishment in Saccharomyces cerevisiae revealed by single-cell optical assaysErin Asayo Nishimura, Y. Hiraoka, J. Rine Proc Natl Acad Sci U S A, 4, 2011.
  • The establishment of gene silencing at single-cell resolutionErin Asayo Nishimura, S. Dudoit, J. Rine Nat Genet, 7, 2009.
  • Maize mutants lacking chloroplast FtsY exhibit pleiotropic defects in the biogenesis of thylakoid membranesY. Asakura, T. Hirohashi, S. Kikuchi, S. Belcher, Erin Asayo Nishimura, S. Yano, I. Terashima, A. Barkan, M. Nakai Plant Cell, 1, 2004.
  • Toward a systems approach to understanding plant cell wallsC. Somerville, S. Bauer, G. Brininstool, M. Facette, T. Hamann, J. Milne, Erin Asayo Nishimura, A. Paredez, S. Persson, T. Raab, S. Vorwerk, H. Youngs Science, 5705, 2004.
  • WIN1, a transcriptional activator of epidermal wax accumulation in ArabidopsisP. Broun, P. Poindexter, Erin Asayo Nishimura, C. Z. Jiang, J. L. Riechmann Proc Natl Acad Sci U S A, 13, 2004.
  • Group II intron splicing factors derived by diversification of an ancient RNA-binding domainG. J. Ostheimer, R. Williams-Carrier, S. Belcher, Erin Asayo Nishimura, J. Gierke, A. Barkan EMBO J, 15, 2003.
  • Microspore separation in the quartet 3 mutants of Arabidopsis is impaired by a defect in a developmentally regulated polygalacturonase required for pollen mother cell wall degradationS. Y. Rhee, Erin Asayo Nishimura, P. D. Poindexter, C. R. Somerville Plant Physiol, 3, 2003.