8 Works

Data from: Natural selection interacts with recombination to shape the evolution of hybrid genomes

Molly Schumer, Chenling Xu, Daniel L Powell, Arun Durvasula, Laurits Skov, Chris Holland, John C Blazier, Sriram Sankararaman, Peter Andolfatto, Gil G Rosenthal & Molly Przeworski
To investigate the consequences of hybridization between species, we studied three replicate hybrid populations that formed naturally between two swordtail fish species, estimating their fine-scale genetic map and inferring ancestry along the genomes of 690 individuals. In all three populations, ancestry from the “minor” parental species is more common in regions of high recombination and where there is linkage to fewer putative targets of selection. The same patterns are apparent in a reanalysis of human...

Data from: Impaired spatial memory codes in a mouse model of Rett syndrome

Sara E. Kee, Xiang Mou, Huda Y. Zoghbi & Daoyun Ji
The Mecp2+/-mouse model recapitulates many phenotypes of patients with Rett syndrome (RTT), including learning and memory deficits. It is unknown, however, how the disease state alters memory circuit functions in vivoin RTT mice. Here we recorded from hippocampal place cells, which are thought to encode spatial memories, in freely moving RTT mice and littermate controls. We found that place cells in RTT mice are impaired in their experience-dependent increase of spatial information. This impairment is...

Data from: Gene flow mediates the role of sex chromosome meiotic drive during complex speciation

Colin D. Meiklejohn, Emily L. Landeen, Kathleen E. Gordon, Thomas Rzatkiewicz, Sarah B. Kingan, Anthony J. Geneva, Jeffrey P. Vedanayagam, Christina A. Muirhead, Daniel Garrigan, David L. Stern & Daven C. Presgraves
During speciation, sex chromosomes often accumulate interspecific genetic incompatibilities faster than the rest of the genome. The drive theory posits that sex chromosomes are susceptible to recurrent bouts of meiotic drive and suppression, causing the evolutionary build-up of divergent cryptic sex-linked drive systems and, incidentally, genetic incompatibilities. To assess the role of drive during speciation, we combine high-resolution genetic mapping of X-linked hybrid male sterility with population genomics analyses of divergence and recent gene flow...

Data from: Efficient and accurate extraction of in vivo calcium signals from microendoscopic video data

Pengcheng Zhou, Shanna L. Resendez, Jose Rodriguez-Romaguera, Jessica C. Jimenez, Shay Q. Neufeld, Andrea Giovannucci, Johannes Friedrich, Eftychios A Pnevmatikakis, Garret D. Stuber, Rene Hen, Mazen A. Kheirbek, Bernardo L. Sabatini, Robert E. Kass & Liam Paninski
In vivo calcium imaging through microendoscopic lenses enables imaging of previously inaccessible neuronal populations deep within the brains of freely moving animals. However, it is computationally challenging to extract single-neuronal activity from microendoscopic data, because of the very large background fluctuations and high spatial overlaps intrinsic to this recording modality. Here, we describe a new constrained matrix factorization approach to accurately separate the background and then demix and denoise the neuronal signals of interest. We...

Data from: Optogenetic dissection of descending behavioral control in Drosophila

Jessica Cande, Shigehiro Namiki, Jirui Qiu, Wyatt Korff, Gwyneth M. Card, Joshua W. Shaevitz, David L. Stern & Gordon J. Berman
In most animals, the brain makes behavioral decisions that are transmitted by descending neurons to the nerve cord circuitry that produces behaviors. In insects, only a few descending neurons have been associated with specific behaviors. To explore how descending neurons control an insect's movements, we developed a novel method to systematically assay the behavioral effects of activating individual neurons on freely behaving terrestrial D. melanogaster. We calculated a two-dimensional representation of the entire behavior space...

Data from: Identification of a transporter complex responsible for the cytosolic entry of nitrogen-containing-bisphosphonates

Zhou Yu, Lauren E. Surface, Chong Yon Park, Max A Horlbeck, Gregory A Wyant, Monther Abu-Remaileh, Timothy R. Peterson, David M. Sabatini, Jonathan S. Weissman & Erin K. O'Shea
Nitrogen-containing-bisphosphonates (N-BPs) are widely prescribed to treat osteoporosis and other bone-related diseases. Although previous studies established that N-BPs function by inhibiting the mevalonate pathway in osteoclasts, the mechanism by which N-BPs enter the cytosol from the extracellular space to reach their molecular target is not understood. Here we implemented a CRISPRi-mediated genome-wide screen and identified SLC37A3 (solute carrier family 37 member A3) as a gene required for the action of N-BPs in mammalian cells. We...

Data from: Molecular, spatial and functional single-cell profiling of the hypothalamic preoptic region

Jeffrey R. Moffitt, Dhananjay Bambah-Mukku, Stephen W. Eichhorn, Eric Vaughn, Karthik Shekhar, Julio D. Perez, Nimrod D. Rubinstein, Junjie Hao, Aviv Regev, Catherine Dulac & Xiaowei Zhuang
The hypothalamus controls essential social behaviors and homeostatic functions. However, the cellular architecture of hypothalamic nuclei, including the molecular identity, spatial organization, and function of distinct cell types, is poorly understood. Here, we developed an imaging-based cell type identification and mapping method and combined it with single-cell RNA-sequencing to create a molecularly annotated and spatially resolved cell atlas of the mouse hypothalamic preoptic region. We profiled ~1 million cells, identified ~70 neuronal populations characterized by...

Data from: Engineering ER-stress dependent non-conventional mRNA splicing

Weihan Li, Voytek Okreglak, Jirka Peschek, Philipp Kimmig, Meghan Zubradt, Jonathan S. Weissman & Peter Walter
The endoplasmic reticulum (ER) protein folding capacity is balanced with the protein folding burden to prevent accumulation of un- or misfolded proteins. The ER membrane-resident kinase/RNase Ire1 maintains ER protein homeostasis through two fundamentally distinct processes. First, Ire1 can initiate a transcriptional response through a non-conventional mRNA splicing reaction to increase the ER folding capacity. Second, Ire1 can decrease the ER folding burden through selective mRNA decay. In Saccharomyces cerevisiae and Schizosaccharomyces pombe, the two...

Registration Year

  • 2018
    8

Resource Types

  • Dataset
    8

Affiliations

  • Howard Hughes Medical Institute
    8
  • Columbia University
    2
  • Princeton University
    2
  • University of California System
    1
  • University of North Carolina
    1
  • Aarhus University
    1
  • University of California, Berkeley
    1
  • Simons Foundation
    1
  • Texas A&M University
    1
  • University of Rochester
    1