L
Loren L. Looger
Researcher at Howard Hughes Medical Institute
Publications - 224
Citations - 31262
Loren L. Looger is an academic researcher from Howard Hughes Medical Institute. The author has contributed to research in topics: Calcium imaging & Chemistry. The author has an hindex of 70, co-authored 205 publications receiving 25217 citations. Previous affiliations of Loren L. Looger include University of California, San Francisco & Duke University.
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Journal ArticleDOI
Ultrasensitive fluorescent proteins for imaging neuronal activity.
Tsai Wen Chen,Trevor J. Wardill,Trevor J. Wardill,Yi Sun,Stefan R. Pulver,Sabine L. Renninger,Amy Baohan,Amy Baohan,Eric R. Schreiter,Rex Kerr,Michael B. Orger,Vivek Jayaraman,Loren L. Looger,Karel Svoboda,Douglas S. Kim +14 more
TL;DR: A family of ultrasensitive protein calcium sensors (GCaMP6) that outperformed other sensors in cultured neurons and in zebrafish, flies and mice in vivo are developed and provide new windows into the organization and dynamics of neural circuits over multiple spatial and temporal scales.
Journal ArticleDOI
Imaging neural activity in worms, flies and mice with improved GCaMP calcium indicators
Lin Tian,S. Andrew Hires,Tianyi Mao,Daniel Huber,M. Eugenia Chiappe,Sreekanth H. Chalasani,Leopoldo Petreanu,Jasper Akerboom,Sean A McKinney,Sean A McKinney,Eric R. Schreiter,Cornelia I. Bargmann,Vivek Jayaraman,Karel Svoboda,Loren L. Looger +14 more
TL;DR: A single-wavelength GCaMP2-based GECI (GCaMP3) is developed, with increased baseline fluorescence, increased dynamic range and higher affinity for calcium, and long-term imaging in the motor cortex of behaving mice revealed large fluorescence changes in imaged neurons over months.
Journal ArticleDOI
Shared and distinct transcriptomic cell types across neocortical areas
Bosiljka Tasic,Zizhen Yao,Lucas T. Graybuck,Kimberly A. Smith,Thuc Nghi Nguyen,Darren Bertagnolli,Jeff Goldy,Emma Garren,Michael N. Economo,Sarada Viswanathan,Osnat Penn,Trygve E. Bakken,Vilas Menon,Vilas Menon,Jeremy A. Miller,Olivia Fong,Karla E. Hirokawa,Kanan Lathia,Christine Rimorin,Michael Tieu,Rachael Larsen,Tamara Casper,Eliza Barkan,Matthew Kroll,Sheana Parry,Nadiya V. Shapovalova,Daniel Hirschstein,Julie Pendergraft,Heather A. Sullivan,Tae Kyung Kim,Aaron Szafer,Nick Dee,Peter A. Groblewski,Ian R. Wickersham,Ali Cetin,Julie A. Harris,Boaz P. Levi,Susan M. Sunkin,Linda Madisen,Tanya L. Daigle,Loren L. Looger,Amy Bernard,John W. Phillips,Ed S. Lein,Michael Hawrylycz,Karel Svoboda,Allan R. Jones,Christof Koch,Hongkui Zeng +48 more
TL;DR: This study establishes a combined transcriptomic and projectional taxonomy of cortical cell types from functionally distinct areas of the adult mouse cortex and identifies 133 transcriptomic types of glutamatergic neurons to their long-range projection specificity.
Journal ArticleDOI
Optimization of a GCaMP calcium indicator for neural activity imaging.
Jasper Akerboom,Tsai Wen Chen,Trevor J. Wardill,Lin Tian,Lin Tian,Jonathan S. Marvin,Sevinç Mutlu,Sevinç Mutlu,Nicole Carreras Calderón,Nicole Carreras Calderón,Nicole Carreras Calderón,Federico Esposti,Bart G. Borghuis,Bart G. Borghuis,Xiaonan Richard Sun,Andrew Gordus,Michael B. Orger,Michael B. Orger,Ruben Portugues,Florian Engert,John J. Macklin,Alessandro Filosa,Aman Aggarwal,Aman Aggarwal,Rex Kerr,Ryousuke Takagi,Sebastian Kracun,Eiji Shigetomi,Baljit S. Khakh,Herwig Baier,Leon Lagnado,Samuel S.-H. Wang,Cornelia I. Bargmann,Bruce E. Kimmel,Vivek Jayaraman,Karel Svoboda,Douglas S. Kim,Eric R. Schreiter,Eric R. Schreiter,Loren L. Looger +39 more
TL;DR: GCaMP5 fluorescence provides a more reliable measure of neuronal activity than its predecessor GCaMP3, which allows more sensitive detection of neural activity in vivo and may find widespread applications for cellular imaging in general.
Journal ArticleDOI
A Designer AAV Variant Permits Efficient Retrograde Access to Projection Neurons.
D. Gowanlock R. Tervo,Bum Yeol Hwang,Sarada Viswanathan,Thomas Gaj,Maria Lavzin,Maria Lavzin,Kimberly D. Ritola,Sarah Lindo,Susan Michael,Elena Kuleshova,Elena Kuleshova,David Stephen Ojala,Cheng Chiu Huang,Charles R. Gerfen,Charles R. Gerfen,Jackie Schiller,Jackie Schiller,Joshua T. Dudman,Adam W. Hantman,Loren L. Looger,David V. Schaffer,Alla Y. Karpova +21 more
TL;DR: A newly evolved variant of adeno-associated virus, rAAV2-retro, permits robust retrograde access to projection neurons with efficiency comparable to classical synthetic retrograde tracers and enables sufficient sensor/effector expression for functional circuit interrogation and in vivo genome editing in targeted neuronal populations.