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Asante E, Hummel D, Gurung S, Kassim YM, Al-Shakarji N, Palaniappan K, Sittaramane V, Chandrasekhar A. Defective Neuronal Positioning Correlates With Aberrant Motor Circuit Function in Zebrafish. Front Neural Circuits 2021; 15:690475. [PMID: 34248505 PMCID: PMC8265374 DOI: 10.3389/fncir.2021.690475] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/01/2021] [Indexed: 11/18/2022] Open
Abstract
Precise positioning of neurons resulting from cell division and migration during development is critical for normal brain function. Disruption of neuronal migration can cause a myriad of neurological disorders. To investigate the functional consequences of defective neuronal positioning on circuit function, we studied a zebrafish frizzled3a (fzd3a) loss-of-function mutant off-limits (olt) where the facial branchiomotor (FBM) neurons fail to migrate out of their birthplace. A jaw movement assay, which measures the opening of the zebrafish jaw (gape), showed that the frequency of gape events, but not their amplitude, was decreased in olt mutants. Consistent with this, a larval feeding assay revealed decreased food intake in olt mutants, indicating that the FBM circuit in mutants generates defective functional outputs. We tested various mechanisms that could generate defective functional outputs in mutants. While fzd3a is ubiquitously expressed in neural and non-neural tissues, jaw cartilage and muscle developed normally in olt mutants, and muscle function also appeared to be unaffected. Although FBM neurons were mispositioned in olt mutants, axon pathfinding to jaw muscles was unaffected. Moreover, neuromuscular junctions established by FBM neurons on jaw muscles were similar between wildtype siblings and olt mutants. Interestingly, motor axons innervating the interhyoideus jaw muscle were frequently defasciculated in olt mutants. Furthermore, GCaMP imaging revealed that mutant FBM neurons were less active than their wildtype counterparts. These data show that aberrant positioning of FBM neurons in olt mutants is correlated with subtle defects in fasciculation and neuronal activity, potentially generating defective functional outputs.
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Affiliation(s)
- Emilia Asante
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Devynn Hummel
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
| | - Suman Gurung
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, United States.,Department of Pathology and Cell Biology, USF Health Heart Institute, University of South Florida, Tampa, Florida, FL, United States
| | - Yasmin M Kassim
- Computational Imaging and VisAnalysis (CIVA) Lab, Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO, United States
| | - Noor Al-Shakarji
- Computational Imaging and VisAnalysis (CIVA) Lab, Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO, United States
| | - Kannappan Palaniappan
- Computational Imaging and VisAnalysis (CIVA) Lab, Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, MO, United States
| | - Vinoth Sittaramane
- Department of Biology, Georgia Southern University, Statesboro, GA, United States
| | - Anand Chandrasekhar
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, MO, United States
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Liu F, Dai S, Feng D, Peng X, Qin Z, Kearns AC, Huang W, Chen Y, Ergün S, Wang H, Rappaport J, Bryda EC, Chandrasekhar A, Aktas B, Hu H, Chang SL, Gao B, Qin X. Versatile cell ablation tools and their applications to study loss of cell functions. Cell Mol Life Sci 2019; 76:4725-4743. [PMID: 31359086 PMCID: PMC6858955 DOI: 10.1007/s00018-019-03243-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/17/2019] [Accepted: 07/22/2019] [Indexed: 12/22/2022]
Abstract
Targeted cell ablation is a powerful approach for studying the role of specific cell populations in a variety of organotypic functions, including cell differentiation, and organ generation and regeneration. Emerging tools for permanently or conditionally ablating targeted cell populations and transiently inhibiting neuronal activities exhibit a diversity of application and utility. Each tool has distinct features, and none can be universally applied to study different cell types in various tissue compartments. Although these tools have been developed for over 30 years, they require additional improvement. Currently, there is no consensus on how to select the tools to answer the specific scientific questions of interest. Selecting the appropriate cell ablation technique to study the function of a targeted cell population is less straightforward than selecting the method to study a gene's functions. In this review, we discuss the features of the various tools for targeted cell ablation and provide recommendations for optimal application of specific approaches.
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Affiliation(s)
- Fengming Liu
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Immunology and Microbiology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Shen Dai
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
| | - Dechun Feng
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xiao Peng
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
| | - Zhongnan Qin
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, 70433, USA
- Department of Immunology and Microbiology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Alison C Kearns
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
| | - Wenfei Huang
- Institute of NeuroImmune Pharmacology, Seton Hall University, 400 South Orange Avenue, South Orange, NJ, 07079, USA
| | - Yong Chen
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
- Key Lab for Immunology in Universities of Shandong Province, School of Clinical Medicine, Weifang Medical University, 261053, Weifang, People's Republic of China
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology, Julius-Maximillan University, 97070, Wurzburg, Germany
| | - Hong Wang
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA
| | - Jay Rappaport
- Division of Pathology, Tulane National Primate Research Center, 18703 Three Rivers Road, Covington, LA, 70433, USA
| | - Elizabeth C Bryda
- Rat Resource and Research Center, University of Missouri, 4011 Discovery Drive, Columbia, MO, 65201, USA
| | - Anand Chandrasekhar
- Division of Biological Sciences, 340D Life Sciences Center, University of Missouri, 1201 Rollins St, Columbia, MO, USA
| | - Bertal Aktas
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Hongzhen Hu
- Department of Anesthesiology, Center for the Study of Itch, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Sulie L Chang
- Institute of NeuroImmune Pharmacology, Seton Hall University, 400 South Orange Avenue, South Orange, NJ, 07079, USA
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xuebin Qin
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, 3500 N Broad Street, Philadelphia, PA, 19140, USA.
- Division of Comparative Pathology, Tulane National Primate Research Center, Covington, LA, 70433, USA.
- Department of Immunology and Microbiology, Tulane University School of Medicine, New Orleans, LA, 70112, USA.
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Julien DP, Chan AW, Barrios J, Mathiaparanam J, Douglass A, Wolman MA, Sagasti A. Zebrafish expression reporters and mutants reveal that the IgSF cell adhesion molecule Dscamb is required for feeding and survival. J Neurogenet 2018; 32:336-352. [PMID: 30204029 DOI: 10.1080/01677063.2018.1493479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Down syndrome cell adhesion molecules (DSCAMs) are broadly expressed in nervous systems and play conserved roles in programmed cell death, neuronal migration, axon guidance, neurite branching and spacing, and synaptic targeting. However, DSCAMs appear to have distinct functions in different vertebrate animals, and little is known about their functions outside the retina. We leveraged the genetic tractability and optical accessibility of larval zebrafish to investigate the expression and function of a DSCAM family member, dscamb. Using targeted genome editing to create transgenic reporters and loss-of-function mutant alleles, we discovered that dscamb is expressed broadly throughout the brain, spinal cord, and peripheral nervous system, but is not required for overall structural organization of the brain. Despite the absence of obvious anatomical defects, homozygous dscamb mutants were deficient in their ability to ingest food and rarely survived to adulthood. Thus, we have discovered a novel function for dscamb in feeding behavior. The mutant and transgenic lines generated in these studies will provide valuable tools for identifying the molecular and cellular bases of these behaviors.
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Affiliation(s)
- Donald P Julien
- a Department of Molecular, Cell and Developmental Biology and Molecular Biology Institute , University of California , Los Angeles , CA , USA
| | - Alex W Chan
- a Department of Molecular, Cell and Developmental Biology and Molecular Biology Institute , University of California , Los Angeles , CA , USA
| | - Joshua Barrios
- b Department of Neurobiology and Anatomy , University of Utah , Salt Lake City , UT , USA
| | - Jaffna Mathiaparanam
- c Department of Integrative Biology , University of Wisconsin , Madison , WI , USA
| | - Adam Douglass
- b Department of Neurobiology and Anatomy , University of Utah , Salt Lake City , UT , USA
| | - Marc A Wolman
- c Department of Integrative Biology , University of Wisconsin , Madison , WI , USA
| | - Alvaro Sagasti
- a Department of Molecular, Cell and Developmental Biology and Molecular Biology Institute , University of California , Los Angeles , CA , USA
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Chandrasekhar A, Guo S, Masai I, Nicolson T, Wu CF. Zebrafish: from genes and neurons to circuits, behavior and disease. J Neurogenet 2017; 31:59-60. [PMID: 28868983 DOI: 10.1080/01677063.2017.1359589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anand Chandrasekhar
- a Division of Biological Sciences and Bond Life Sciences Center , University of Missouri , Columbia , MO , USA
| | - Su Guo
- b Department of Biopharmaceutical Sciences and Wheeler Center for the Neurobiology of Addiction , University of California San Francisco , San Francisco , CA , USA
| | - Ichiro Masai
- c Developmental Neurobiology Unit , Okinawa Institute of Science and Technology Graduate University , Okinawa , Japan
| | - Teresa Nicolson
- d Oregon Hearing Research Center and the Vollum Institute, Oregon Health and Science University , Portland , OR , USA
| | - Chun-Fang Wu
- e Department of Biology , University of Iowa , Iowa City , IA , USA
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