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    My group works towards understanding the principles that govern collective organization in multicellular organisms using molecular and cellular biology, physics and computer science. We also aim at connecting our fundamental discoveries to real-world problems of human health and technology.

     

    curriculum vitae

     

    We invite you to scroll down to find out about our research.

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    Hernán López-Schier

    Group Leader

    I have been a the Director of the Research Unit "Sensory Biology & Organogenesis" at the Helmholtz Center (Munich, Germany) since 2012. I trained in genetics and cell biology using Drosophila, first as an undergraduate visiting student at the Rockefeller University (New York, U.S.A.), and then as a graduate student at the University of Cambridge (Cambridge, U.K.). I did postdoctoral work on sensory biology using the zebrafish again at Rockefeller from 2002 to 2007. I established my independent group at the Centre for Genomic Regulation (Barcelona, Spain), where I decided to concentrate on the development and regeneration of mechanosensory organs. In 2012 I took the opportunity of moving to Munich to shift focus on understanding collective organization sensu lato. We study evolutionary and mechanistic aspects of organization in gene-regulatory networks, cells and organisms.

  • Some Unanswered Questions the Organization of Biological Systems

    What determines cell number and diversity in organs?

    How do cells assemble complex three-dimensional biological structures?

    Do cells self-organize during organ repair?

    Can we engineer organ regeneration in situ?

    How does ageing affect organ homeostasis and repair?

    How do sensory systems govern animal behaviour?

  • Projects

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    Organization of Organs

    We are interested in discovering the routes and mechanisms that underlie the morphogenesis and morphostasis of complex tissues in their natural context, which is crucial to many areas of biology and medicine, including the controlled production of organoids and functional organs. We are also interested in understanding the mechanisms that control organ proportions and size, using genetic manipulations, live microscopy and machine learning.

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    Regeneration and Bioengineering

    Using transcriptional profiling, live microscopy, and cell-lineage tracing, we attempt to understand the self-organising principles that underlie the recapitulation of organ structure during repair. We are also using optogenetic approaches to promote regeneration.

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    Sensory Biology

    We hope to unravel the cellular, neurobiological and computational basis of mechanosensation. To this aim, we are reconstructing a cellular-resolution map of the larval zebrafish neuronal circuits to generate a wiring diagram of sensory flow from peripheral receptors to the brain.

  • PUBLICATIONS

    1

    Incoherent collective cell chemotaxis in a zebrafish model of branchio-oto-renal syndrome​

    2

    Long-term in toto imaging of cellular behavior during nerve injury and regeneration

    2022

    3

    Quantitative videomicroscopy reveals latent control of cell-pair rotation in vivo​

    bioRxiv 2022
    4

    Noninvasive visualization of electrical conductivity in tissues at the micrometer scale​

    Science Advances 7, no. 20, eabd1505, 2021

    https://advances.sciencemag.org/content/7/20/eabd1505

    5

    Size matters: An analytical study on the role of tissue size in spatiotemporal distribution of two morphogens unveils a transition between different Reaction-Diffusion regimes

    6

    Quantitative neuronal morphometry by supervised and unsupervised learning​

    7

    Sarm1 is dispensable for mechanosensory-motor transformations in zebrafish​

    MicroPubl. Biol. March, 2021 https://pubmed.ncbi.nlm.nih.gov/33688624/

    8

    A neuronal blueprint for directional mechanosensation in larval zebrafish

    Current Biology S0960-9822(21)00110-X (2021)

    https://pubmed.ncbi.nlm.nih.gov/33545047/

    9

    Animal Behaviour: Learning Social Distancing

    Current Biology  30(20):R1275-R1276 (2020)

    https://pubmed.ncbi.nlm.nih.gov/33080202/

    10

    Blocking Wallerian degeneration by loss of Sarm1 does not promote axon resealing in zebrafish​

    11

    Epithelial Planar Bipolarity Emerges from Notch-Mediated Asymmetric Inhibition of Emx2

    Current Biology 30: 1-10, 2020

    https://www.ncbi.nlm.nih.gov/pubmed/32109392 

    12

    Systemic loss of Sarm1 protects Schwann cells from chemotoxicity by delaying axon degeneration

    13

    Sox2 controls Schwann cell self-organization through fibronectin fibrillogenesis

    Scientific Reports 2020

    https://rdcu.be/b1nXo

    14

    Live Morphometric Classification of Sensory Neurons in Larval Zebrafish

    Methods Mol Biol. 2047:411-419, 2020

    https://www.ncbi.nlm.nih.gov/pubmed/31552668

    15

    Acoustic scattering mediated single detector optoacoustic tomography

    16

    Beyond early development: observing zebrafish over 6 weeks with hybrid optical and optoacoustic imaging​

    17

    Neuroplasticity in the acoustic startle reflex in larval zebrafish

    Current Opinion in Neurobiol​ogy 54:134-139, 2018

    https://www.ncbi.nlm.nih.gov/pubmed/30359930

    18

    Hair-cell identity establishes labeled lines of directional mechanosensation

    PLoS Biology, 16(7): e2004404, 2018 https://www.ncbi.nlm.nih.gov/pubmed/30024872​

    19

    Live cell-lineage tracing and machine learning reveal patterns of organ regeneration

    20

    Sensory Systems: Electrifying News from the Ocean

    Current Biology 27(24): R1327, 2017

    https://www.ncbi.nlm.nih.gov/pubmed/29257970

    21

    Optoacoustic micro-tomography at 100 volumes per second

    22

    Optical imaging of post-embryonic zebrafish using multi-orientation raster scan optoacoustic mesoscopy

    Light: Science & Applications 6, e16186, 2017

    http://www.nature.com/lsa/journal/v6/n1/full/lsa2016186a.html

    23

    Studying axonal regeneration by laser microsurgery and high-resolution videomicroscopy

    Methods in Mol. Biology, 2016

    https://www.ncbi.nlm.nih.gov/pubmed/27464814

     

    24

    Optogenetic stimulation of neuronal repair

    Current Biology 25: 1068, 2015

    https://www.ncbi.nlm.nih.gov/pubmed/26583893

    25

    Selective-plane illumination optical and optoacoustic microscopy for postembryonic

    whole-animal imaging

    Lasers and Photonics Reviews 9, 5: L29–L34, 2015

    http://onlinelibrary.wiley.com/doi/10.1002/lpor.201500120/abstract

    26

    High-resolution live imaging reveals axon-glia interactions during peripheral nerve

    injury and repair

    Dis. Mod. Mech. 8(6):564, 2015

    https://www.ncbi.nlm.nih.gov/pubmed/26035865

    27

    Inexhaustible hair-cell regeneration in young and aged zebrafish

    28

    Converging axons collectively initiate and maintain synaptic selectivity in a constantly remodeling sensory organ

    Current Biology, 24(24): 2968-2974, 2014

    https://www.ncbi.nlm.nih.gov/pubmed/25484295

    29

    Dynamic neuroanatomy at subcellular resolution in the zebrafish

    Methods in Molecular Biology, 1082:187-95, 2014

    https://www.ncbi.nlm.nih.gov/pubmed/24048935

    30

    Intravital imaging of hair-cell development and regeneration in the zebrafish     

     

    Frontiers in Neuroanatomy, 7:33, 2014

    https://www.ncbi.nlm.nih.gov/pubmed/24130521

    31

    Developmental and Architectural Principles of the Lateral-line Neural Map

     

    Frontiers in Neural Circuits, 7:47, 2013

    https://www.ncbi.nlm.nih.gov/pubmed/23532704

    32

    Neuronal birth order identifies a dimorphic sensorineural map

    Journal of Neuroscience 32(9):2976-87, 2012

    https://www.ncbi.nlm.nih.gov/pubmed/22378871

    33

    4D retrospective lineage tracing using SPIM for zebrafish organogenesis studies

    Journal of Biophotonics, 4(1-2):122-34, 2011

    https://www.ncbi.nlm.nih.gov/pubmed/20925108

    34

    Delaying Gal4-driven gene expression in the zebrafish with morpholinos and Gal80

    35

    Compartmentalized Notch signaling sustains epithelial mirror symmetry

    36

    Multispectral four-dimensional imaging reveals that evoked activity modulates peripheral

    arborization and the selection of plane-polarized targets by sensory neurons

    Development 137(10): 1635-1643, 2010

    https://www.ncbi.nlm.nih.gov/pubmed/20430744

    37

    Progressive neurogenesis defines lateralis somatotopy

    Developmental Dynamics 239(7): 1919-1930, 2010

    https://www.ncbi.nlm.nih.gov/pubmed/20549716

    38

    Afferent neurons of the zebrafish lateral line are strict selectors of hair-cell orientation

    39

    The histone variant mH2A is an epigenetic regulator of key developmental genes

    Nature Struct. and Molecular Biology 16(10): 1074-9, 2009

    https://www.ncbi.nlm.nih.gov/pubmed/19734898

    40

    The transmembrane inner ear (Tmie) protein is essential for normal hearing and balance in the zebrafis

    41

    A two-step mechanism underlies the planar polarization of regenerating sensory hair cells 

    42

    Supernumerary neuromasts in the posterior lateral line of zebrafish lacking peripheral glia 

    P.N.A.S. 102(5): 1496-1501, 2005

    https://www.ncbi.nlm.nih.gov/pubmed/15677337

    43

    Directional cell migration establishes the axes of planar polarity in the posterior lateral-line

    organ of the zebrafish

    Developmental Cell 7: 401, 2004

    https://www.ncbi.nlm.nih.gov/pubmed/15363414

    44

    A Notch/Delta-dependent relay mechanism establishes anterior-posterior polarity

    in Drosophila

    Developmental Cell 5(4): 547-58, 2003

    https://www.ncbi.nlm.nih.gov/pubmed/14536057

    45

    Drosophila Nicastrin is essential for the intramembranous cleavage of Notch

    Developmental Cell 2(1): 79-89, 2002

    https://www.ncbi.nlm.nih.gov/pubmed/11782316

    46

    Delta signaling from the germ line controls the proliferation and differentiation of the

    somatic follicle cells during Drosophila oogenesis

    Genes & Development 15: 1393-1405, 2001

    https://www.ncbi.nlm.nih.gov/pubmed/11390359 

  • Past & Future Activities of the Group