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.
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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
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.
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.
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
1Incoherent collective cell chemotaxis in a zebrafish model of branchio-oto-renal syndrome
2Long-term in toto imaging of cellular behavior during nerve injury and regeneration
2022
3Quantitative videomicroscopy reveals latent control of cell-pair rotation in vivo
bioRxiv 2022
4Noninvasive visualization of electrical conductivity in tissues at the micrometer scale
Science Advances 7, no. 20, eabd1505, 2021
5Size matters: An analytical study on the role of tissue size in spatiotemporal distribution of two morphogens unveils a transition between different Reaction-Diffusion regimes
R Soc Open Sci. 9(1): 211112, 2022
6Quantitative neuronal morphometry by supervised and unsupervised learning
STAR Protocols] 2, no. 4, 100867, 2021
https://www.sciencedirect.com/science/article/pii/S2666166721005736
7Sarm1 is dispensable for mechanosensory-motor transformations in zebrafish
MicroPubl. Biol. March, 2021 https://pubmed.ncbi.nlm.nih.gov/33688624/
8A neuronal blueprint for directional mechanosensation in larval zebrafish
Current Biology S0960-9822(21)00110-X (2021)
9Animal Behaviour: Learning Social Distancing
Current Biology 30(20):R1275-R1276 (2020)
10Blocking Wallerian degeneration by loss of Sarm1 does not promote axon resealing in zebrafish
MicroPubl. Biol. Jul 23, 2020
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382949/pdf/25789430-2020-micropub.biology.000283.pdf
11Epithelial Planar Bipolarity Emerges from Notch-Mediated Asymmetric Inhibition of Emx2
Current Biology 30: 1-10, 2020
12Systemic loss of Sarm1 protects Schwann cells from chemotoxicity by delaying axon degeneration
Communicatios Biology 3: 49, 2020 https://www.nature.com/articles/s42003-020-0776-9
13Sox2 controls Schwann cell self-organization through fibronectin fibrillogenesis
Scientific Reports 2020
14Live Morphometric Classification of Sensory Neurons in Larval Zebrafish
Methods Mol Biol. 2047:411-419, 2020
15Acoustic scattering mediated single detector optoacoustic tomography
Phys. Rev. Lett., 123, 174301, 2019
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.174301
16Beyond early development: observing zebrafish over 6 weeks with hybrid optical and optoacoustic imaging
BioRxiv 2019 https://www.biorxiv.org/content/10.1101/586933v1
17Neuroplasticity in the acoustic startle reflex in larval zebrafish
Current Opinion in Neurobiology 54:134-139, 2018
18Hair-cell identity establishes labeled lines of directional mechanosensation
PLoS Biology, 16(7): e2004404, 2018 https://www.ncbi.nlm.nih.gov/pubmed/30024872
19Live cell-lineage tracing and machine learning reveal patterns of organ regeneration
eLife pii: e30823, 2018
20Sensory Systems: Electrifying News from the Ocean
Current Biology 27(24): R1327, 2017
21Optoacoustic micro-tomography at 100 volumes per second
Sci. Rep. 7(1):6850, 2017
22Optical 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
23Studying axonal regeneration by laser microsurgery and high-resolution videomicroscopy
24Optogenetic stimulation of neuronal repair
Current Biology 25: 1068, 2015
25Selective-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
26High-resolution live imaging reveals axon-glia interactions during peripheral nerve
injury and repair
Dis. Mod. Mech. 8(6):564, 2015
27Inexhaustible hair-cell regeneration in young and aged zebrafish
Biology Open 4(7): 903, 2015
28Converging axons collectively initiate and maintain synaptic selectivity in a constantly remodeling sensory organ
Current Biology, 24(24): 2968-2974, 2014
29Dynamic neuroanatomy at subcellular resolution in the zebrafish
Methods in Molecular Biology, 1082:187-95, 2014
30Intravital imaging of hair-cell development and regeneration in the zebrafish
31Developmental and Architectural Principles of the Lateral-line Neural Map
32Neuronal birth order identifies a dimorphic sensorineural map
Journal of Neuroscience 32(9):2976-87, 2012
334D retrospective lineage tracing using SPIM for zebrafish organogenesis studies
Journal of Biophotonics, 4(1-2):122-34, 2011
34Delaying Gal4-driven gene expression in the zebrafish with morpholinos and Gal80
PLoS ONE 26;6(1):e16587, 2011
35Compartmentalized Notch signaling sustains epithelial mirror symmetry
Development 138:1143, 2011
36Multispectral 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
37Progressive neurogenesis defines lateralis somatotopy
Developmental Dynamics 239(7): 1919-1930, 2010
38Afferent neurons of the zebrafish lateral line are strict selectors of hair-cell orientation
PLoS ONE 4 (2): e4477, 2009
39The histone variant mH2A is an epigenetic regulator of key developmental genes
Nature Struct. and Molecular Biology 16(10): 1074-9, 2009
40The transmembrane inner ear (Tmie) protein is essential for normal hearing and balance in the zebrafis
P.N.A.S. 106(50): 21347, 2009
41A two-step mechanism underlies the planar polarization of regenerating sensory hair cells
P.N.A.S. 103(49): 18615, 2006
42Supernumerary neuromasts in the posterior lateral line of zebrafish lacking peripheral glia
P.N.A.S. 102(5): 1496-1501, 2005
43Directional cell migration establishes the axes of planar polarity in the posterior lateral-line
organ of the zebrafish
Developmental Cell 7: 401, 2004
44A Notch/Delta-dependent relay mechanism establishes anterior-posterior polarity
in Drosophila
Developmental Cell 5(4): 547-58, 2003
45Drosophila Nicastrin is essential for the intramembranous cleavage of Notch
Developmental Cell 2(1): 79-89, 2002
46Delta signaling from the germ line controls the proliferation and differentiation of the
somatic follicle cells during Drosophila oogenesis
Genes & Development 15: 1393-1405, 2001
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© 2017