Alexander F. Schier | |
---|---|
Born | 1964 |
Citizenship | Switzerland, USA |
Alma mater | University of Basel (1988) |
Known for | Research with zebrafish (Danio rerio) Embryogenesis Sleep |
Awards | McKnight Scholar for Neuroscience (1999-2002) Irma T. Hirschl Scholar (2001-2005) McKnight Neuroscience of Brain Disorders Award (2006-2008) Everett Mendelsohn Excellence in Mentoring Award (2014) NIH MERIT Award (2016) NIH Pioneer Award (2017) Election to EMBO (2018) Science Breakthrough of the Year (2018) [1] ERC Advanced Grant (2020) George Streisinger Award of the International Zebrafish Society (2020) Election to National Academy of Sciences (2020) Election to Academia Europaea (2020) AAAS Fellow, American Association for the Advancement of Science (2021) [2] |
Scientific career | |
Fields | Cell Biology Development Genetics Neurobiology Behavior |
Institutions | Biozentrum of the University of Basel (Switzerland) Massachusetts General Hospital, Boston (USA) Skirball Institute, NYU School of Medicine (USA) Department of Molecular and Cellular Biology, Harvard University (USA) |
Doctoral advisor | Walter J. Gehring |
Other academic advisors | Wolfgang Driever |
Alexander F. Schier (born 1964) is a Professor of Cell Biology and the Director of the Biozentrum University of Basel, Switzerland. [3]
Schier received a B.A. in cell biology in 1988 from the Biozentrum of the University of Basel, Switzerland, followed by a PhD in cell biology in 1992 under Walter J. Gehring, also from the University of Basel, Switzerland. He conducted his postdoctoral research in Wolfgang Driever's lab at the Massachusetts General Hospital and Harvard University in Boston, US. In 1996, Schier was recruited as assistant professor in the Developmental Genetics Program to the Skirball Institute and Department of Cell Biology, NYU School of Medicine.
From 2005 to 2019, he was a professor at the Department of Molecular and Cellular Biology, Harvard University, Faculty of Arts and Sciences. In 2013 he became the Leo Erikson Life Sciences Professor. He chaired the Department of Molecular and Cellular Biology from 2014 to 2017. Since 2017 Schier is a site director of the Allen Discovery Center for Cell Lineage Tracing. In 2018, Schier became the Director of the Biozentrum of the University of Basel as well as Professor for Cell Biology.
Schier is internationally recognized for his pioneering work on vertebrate development using zebrafish (Danio rerio) as a model organism. During his postdoctoral work, Schier and colleagues performed one of the first large-scale forward genetic screens in a vertebrate. [4] [5]
In his own lab, Schier has made fundamental contributions to the understanding of the molecular basis of vertebrate embryogenesis, including signaling, [6] [7] [8] [9] [10] [11] [12] [13] cell fate determination, [7] [8] [14] [15] cell movement, [12] the maternal-zygotic transition, [16] [17] microRNAs, [10] [16] [18] chromatin [19] and non-coding RNAs. [20] Schier's more recent interest in behavior has established zebrafish as a model for sleep [21] [22] and behavioral [23] research, determined neural circuits that underlie sleep [21] identified small molecule sleep regulators [22] and studied the roles of schizophrenia-associated genes REF Thyme Cell 2019.
He has contributed to the development of zebrafish as model system, including positional cloning, [6] germ-line replacement to generate maternal-effect mutants, [24] photobleaching and photo conversion, [11] Brainbow imaging, [15] brain activity atlas, [25] small molecule profiling, [22] transcriptomics [20] [26] and epigenomics, [19] gene annotation, [12] [20] [27] [28] CRISPR/Cas9 genome editing, [29] [30] [31] lineage tracing by genomic barcode editing [32] and reconstruction of developmental trajectories by single-cell RNA-sequencing. [33]
Schier is also well known for having an unusually high rate of placing trainees in academic positions. Previous mentees have gone on to PI positions at Yale, Princeton, Caltech, UCLA, University of Toronto, U Mass Amherst, NYU School of Medicine, University College London, MPI Dresden, University of Tokyo, UCSD, University of Calgary, MPI Tuebingen, IMP Vienna, University of Utah, Cambridge University and NIH. Key to his mentoring philosophy are five questions he has developed to sharpen the thoughts of his mentees: [34]
The zebrafish is a freshwater fish belonging to the minnow family (Cyprinidae) of the order Cypriniformes. Native to South Asia, it is a popular aquarium fish, frequently sold under the trade name zebra danio. It is also found in private ponds.
Lefty are a class of proteins that are closely related members of the TGF-beta superfamily of growth factors. These proteins are secreted and play a role in left-right asymmetry determination of organ systems during development. Mutations of the genes encoding these proteins have been associated with left-right axis malformations, particularly in the heart and lungs.
The miR-10 microRNA precursor is a short non-coding RNA gene involved in gene regulation. It is part of an RNA gene family which contains miR-10, miR-51, miR-57, miR-99 and miR-100. miR-10, miR-99 and miR-100 have now been predicted or experimentally confirmed in a wide range of species. mir-51 and mir-57 have currently only been identified in the nematode Caenorhabditis elegans.
Nodal homolog is a secretory protein that in humans is encoded by the NODAL gene which is located on chromosome 10q22.1. It belongs to the transforming growth factor beta (TGF-β) superfamily. Like many other members of this superfamily it is involved in cell differentiation in early embryogenesis, playing a key role in signal transfer from the primitive node, in the anterior primitive streak, to lateral plate mesoderm (LPM).
The Nodal signaling pathway is a signal transduction pathway important in regional and cellular differentiation during embryonic development.
Maternal to zygotic transition is the stage in embryonic development during which development comes under the exclusive control of the zygotic genome rather than the maternal (egg) genome. The egg contains stored maternal genetic material mRNA which controls embryo development until the onset of MZT. After MZT the diploid embryo takes over genetic control. This requires both zygotic genome activation (ZGA) and degradation of maternal products. This process is important because it is the first time that the new embryonic genome is utilized and the paternal and maternal genomes are used in combination. The zygotic genome now drives embryo development.
In molecular biology mir-451 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.
In molecular biology mir-430 microRNA is a short RNA molecule. MicroRNAs function to regulate the expression levels of other genes by several mechanisms.
The Biozentrum of the University of Basel specializes in basic molecular and biomedical research and teaching. Research includes the areas of cell growth and development, infection biology, neurobiology, structural biology and biophysics, and computational and systems biology. With 500 employees, the Biozentrum is the largest department at the University of Basel's Faculty of Science. It is home to 30 research groups with scientists from more than 40 nations.
The ZebraBox is the first ever automated analysis chamber used for zebrafish monitoring in a non-intrusive manner.
Bicoid is a maternal effect gene whose protein concentration gradient patterns the anterior-posterior (A-P) axis during Drosophila embryogenesis. Bicoid was the first protein demonstrated to act as a morphogen. Although Bicoid is important for the development of Drosophila and other higher dipterans, it is absent from most other insects, where its role is accomplished by other genes.
Template-switching polymerase chain reaction (TS-PCR) is a method of reverse transcription and polymerase chain reaction (PCR) amplification that relies on a natural PCR primer sequence at the polyadenylation site, also known as the poly(A) tail, and adds a second primer through the activity of murine leukemia virus reverse transcriptase. This permits reading full cDNA sequences and can deliver high yield from single sources, even single cells that contain 10 to 30 picograms of mRNA, with relatively low levels (3-5%) of contaminating rRNA sequence. This technique is often employed in whole transcriptome shotgun sequencing. It is marketed by Clontech as Switching Mechanism At the 5' end of RNA Template (SMART) as well as by Diagenode as Capture and Amplification by Tailing and Switching (CATS).
Debora S. Marks is a researcher in computational biology and an Associate Professor of Systems Biology at Harvard Medical School. Her research uses computational approaches to address a variety of biological problems.
Didier Stainier is a Belgian/American developmental geneticist who is currently a director at the Max Planck Institute for Heart and Lung Research in Bad Nauheim, Germany.
A. James Hudspeth is the F.M. Kirby Professor at Rockefeller University, where he is director of the F.M. Kirby Center for Sensory Neuroscience. His laboratory studies the physiological basis of hearing.
Antonio Jesus Giraldez is a Spanish developmental biologist and RNA researcher at Yale University School of Medicine, where he serves as chair of the department of genetics and Fergus F. Wallace Professor of Genetics. He is also affiliated with the Yale Cancer Center and the Yale Stem Cell Center.
Micropeptides are polypeptides with a length of less than 100-150 amino acids that are encoded by short open reading frames (sORFs). In this respect, they differ from many other active small polypeptides, which are produced through the posttranslational cleavage of larger polypeptides. In terms of size, micropeptides are considerably shorter than "canonical" proteins, which have an average length of 330 and 449 amino acids in prokaryotes and eukaryotes, respectively. Micropeptides are sometimes named according to their genomic location. For example, the translated product of an upstream open reading frame (uORF) might be called a uORF-encoded peptide (uPEP). Micropeptides lack an N-terminal signaling sequences, suggesting that they are likely to be localized to the cytoplasm. However, some micropeptides have been found in other cell compartments, as indicated by the existence of transmembrane micropeptides. They are found in both prokaryotes and eukaryotes. The sORFs from which micropeptides are translated can be encoded in 5' UTRs, small genes, or polycistronic mRNAs. Some micropeptide-coding genes were originally mis-annotated as long non-coding RNAs (lncRNAs).
Kenneth D. Poss is an American biologist and currently James B. Duke Professor of Cell Biology and director of the Regeneration Next Initiative at the Duke University School of Medicine.
Andrew 'Andy' Charles Oates is an Australian and British developmental biologist and embryologist specialized in biological pattern formation. He is professor at EPFL and head of the Segmentation Timing and Dynamics Laboratory at EPFL's School of Life Sciences. Since 2021, he has been dean of EPFL's School of Life Sciences.
Andrea Pauli is a developmental biologist and biochemist studying how the egg transitions into an embryo, and more specifically the molecular mechanisms underlying vertebrate fertilisations, egg dormancy, and subsequent egg activation.. Her lab uses zebrafish as the main model organism. Andrea Pauli is a group leader at the Research Institute of Molecular Pathology (IMP) at the Vienna Biocenter in Austria.