Abstract
The anatomically and genetically very accessible nervous system of the nematode Caenorhabditis elegans, composed of a total of 302 neurons in the hermaphrodite, displays a number of striking neuronal lateralities which come largely in two forms: unilateral neurons found only on one side of the nervous system and functional differences in otherwise bilaterally symmetric neuron pairs. Two recent reviews have described in detail the genetic mechanisms that specify the most prominent sensory lateralities in two bilaterally symmetric sensory neuron classes in C. elegans. In this Neuromethods chapter, we provide a general overview of the specific methods and opportunities that exist in C. elegans to identify lateralities, to decipher their functional relevance and to dissect the genetic control mechanisms that establish these lateralities. These specific advantages include (a) the ability to identify and visualize neuronal lateralities on the anatomical, gene expression, and neuronal activity level with single cell resolution; (b) the ability to assign function to lateralized neurons using behavioral analysis and genetic manipulation of neuronal activity; (c) the ability to conduct genetic screens for mutants that disrupt lateralities, thereby deciphering the genetic patterning mechanisms that instruct neuronal lateralities.
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References
Rogers LJ, Vallortigara G, Andrew RJ (2013) Divided brains: the biology and behavior of brain asymmetries. Cambridge University Press, Cambridge
Davidson RJ, Hugdahl K (eds) (1994) Brain asymmetry. MIT Press, Cambridge, MA
Hugdahl K, Davidson RJ (eds) (2003) The asymmetrical brain. MIT Press, Cambridge, MA
Concha ML, Bianco IH, Wilson SW (2012) Encoding asymmetry within neural circuits. Nat Rev Neurosci 13:832–843
Sun T, Walsh CA (2006) Molecular approaches to brain asymmetry and handedness. Nat Rev Neurosci 7:655–662
Hobert O, Johnston RJ Jr, Chang S (2002) Left-right asymmetry in the nervous system: the Caenorhabditis elegans model. Nat Rev Neurosci 3:629–640
Frasnelli E, Vallortigara G, Rogers LJ (2012) Left-right asymmetries of behaviour and nervous system in invertebrates. Neurosci Biobehav Rev 36:1273–1291
White JG, Southgate E, Thomson JN, Brenner S (1986) The structure of the nervous system of the nematode Caenorhabditis elegans. Philos Trans R Soc Lond B Biol Sci 314:1–340
Hobert O (2014) Development of left/right asymmetry in the Caenorhabditis elegans nervous system: from zygote to postmitotic neuron. Genesis 52:528–543
Hsieh YW, Alqadah A, Chuang CF (2014) Asymmetric neural development in the Caenorhabditis elegans olfactory system. Genesis 52:544–554
Hall DH, Altun Z (2007) C. elegans atlas. Cold Spring Harbor Laboratory Press, New York
McIntire SL, Jorgensen E, Kaplan J, Horvitz HR (1993) The GABAergic nervous system of Caenorhabditis elegans. Nature 364:337–341
Turek M, Lewandrowski I, Bringmann H (2013) An AP2 transcription factor is required for a sleep-active neuron to induce sleep-like quiescence in C. elegans. Curr Biol 23:2215–2223
Van Buskirk C, Sternberg PW (2007) Epidermal growth factor signaling induces behavioral quiescence in Caenorhabditis elegans. Nat Neurosci 10:1300–1307
Sulston JE, Horvitz HR (1977) Post-embryonic cell lineages of the nematode, Caenorhabditis elegans. Dev Biol 56:110–156
Sulston JE, Schierenberg E, White JG, Thomson JN (1983) The embryonic cell lineage of the nematode Caenorhabditis elegans. Dev Biol 100:64–119
Greenwald IS, Sternberg PW, Horvitz HR (1983) The lin-12 locus specifies cell fates in Caenorhabditis elegans. Cell 34:435–444
Lambie EJ, Kimble J (1991) Two homologous regulatory genes, lin-12 and glp-1, have overlapping functions. Development 112:231–240
Hutter H, Schnabel R (1995) Establishment of left-right asymmetry in the Caenorhabditis elegans embryo: a multistep process involving a series of inductive events. Development 121:3417–3424
Moskowitz IP, Rothman JH (1996) lin-12 and glp-1 are required zygotically for early embryonic cellular interactions and are regulated by maternal GLP-1 signaling in Caenorhabditis elegans. Development 122:4105–4117
Priess JR (2005) Notch signaling in the C. elegans embryo. In: WormBook, C.e.R. Community (ed). WormBook. doi:10.1895/wormbook.1.4.1, http://www.wormbook.org
Hermann GJ, Leung B, Priess JR (2000) Left-right asymmetry in C. elegans intestine organogenesis involves a LIN-12/Notch signaling pathway. Development 127:3429–3440
Lin R, Hill RJ, Priess JR (1998) POP-1 and anterior-posterior fate decisions in C. elegans embryos. Cell 92:229–239
Hutter H, Schnabel R (1994) glp-1 and inductions establishing embryonic axes in C. elegans. Development 120:2051–2064
Cochella L, Hobert O (2012) Embryonic priming of a miRNA locus predetermines postmitotic neuronal left/right asymmetry in C. elegans. Cell 151:1229–1242
Chalfie M, Tu Y, Euskirchen G, Ward WW, Prasher DC (1994) Green fluorescent protein as a marker for gene expression. Science 263:802–805
Troemel ER, Chou JH, Dwyer ND, Colbert HA, Bargmann CI (1995) Divergent seven transmembrane receptors are candidate chemosensory receptors in C. elegans. Cell 83:207–218
Yu S, Avery L, Baude E, Garbers DL (1997) Guanylyl cyclase expression in specific sensory neurons: a new family of chemosensory receptors. Proc Natl Acad Sci U S A 94:3384–3387
Troemel ER, Sagasti A, Bargmann CI (1999) Lateral signaling mediated by axon contact and calcium entry regulates asymmetric odorant receptor expression in C. elegans. Cell 99:387–398
Lesch BJ, Bargmann CI (2010) The homeodomain protein hmbx-1 maintains asymmetric gene expression in adult C. elegans olfactory neurons. Genes Dev 24:1802–1815
Ortiz CO, Etchberger JF, Posy SL, Frokjaer-Jensen C, Lockery S, Honig B, Hobert O (2006) Searching for neuronal left/right asymmetry: genomewide analysis of nematode receptor-type guanylyl cyclases. Genetics 173:131–149
Johnston RJ Jr, Chang S, Etchberger JF, Ortiz CO, Hobert O (2005) MicroRNAs acting in a double-negative feedback loop to control a neuronal cell fate decision. Proc Natl Acad Sci U S A 102:12449–12454
Brenner S (1974) The genetics of Caenorhabditis elegans. Genetics 77:71–94
Doitsidou M, Poole RJ, Sarin S, Bigelow H, Hobert O (2010) C. elegans mutant identification with a one-step whole-genome-sequencing and SNP mapping strategy. PLoS ONE 5:e15435
Hobert O, Tessmar K, Ruvkun G (1999) The Caenorhabditis elegans lim-6 LIM homeobox gene regulates neurite outgrowth and function of particular GABAergic neurons. Development 126:1547–1562
Johnston RJ, Hobert O (2003) A microRNA controlling left/right neuronal asymmetry in Caenorhabditis elegans. Nature 426:845–849
Sarin S, Prabhu S, O'Meara MM, Pe'er I, Hobert O (2008) Caenorhabditis elegans mutant allele identification by whole-genome sequencing. Nat Methods 5:865–867
Zhang F, O'Meara MM, Hobert O (2011) A left/right asymmetric neuronal differentiation program is controlled by the Caenorhabditis elegans lsy-27 zinc-finger transcription factor. Genetics 188:753–759
Flowers EB, Poole RJ, Tursun B, Bashllari E, Pe'er I, Hobert O (2010) The Groucho ortholog UNC-37interacts with the short Groucho-like protein LSY-22 to control developmental decisions in C. elegans. Development 137:1799–1805
Sarin S, Bertrand V, Bigelow H, Boyanov A, Doitsidou M, Poole RJ, Narula S, Hobert O (2010) Analysis of multiple ethyl methanesulfonate-mutagenized caenorhabditis elegans strains by whole-genome sequencing. Genetics 185:417–430
Dusenbery DB (1974) Analysis of chemotaxis in the nematode Caenorhabditis elegans by countercurrent separation. J Exp Zool 188:41–47
Ward S (1973) Chemotaxis by the nematode Caenorhabditis elegans: identification of attractants and analysis of the response by use of mutants. Proc Natl Acad Sci U S A 70:817–821
Hedgecock EM, Russell RL (1975) Normal and mutant thermotaxis in the nematode Caenorhabditis elegans. Proc Natl Acad Sci U S A 72:4061–4065
Bargmann CI, Hartwieg E, Horvitz HR (1993) Odorant-selective genes and neurons mediate olfaction in C. elegans. Cell 74:515–527
Bargmann CI, Horvitz HR (1991) Chemosensory neurons with overlapping functions direct chemotaxis to multiple chemicals in C. elegans. Neuron 7:729–742
Pierce-Shimomura JT, Faumont S, Gaston MR, Pearson BJ, Lockery SR (2001) The homeobox gene lim-6 is required for distinct chemosensory representations in C. elegans. Nature 410:694–698
Wes PD, Bargmann CI (2001) C. elegans odour discrimination requires asymmetric diversity in olfactory neurons. Nature 410:698–701
Ortiz CO, Faumont S, Takayama J, Ahmed HK, Goldsmith AD, Pocock R, McCormick KE, Kunimoto H, Iino Y, Lockery S et al (2009) Lateralized gustatory behavior of C. elegans is controlled by specific receptor-type guanylyl cyclases. Curr Biol 19:996–1004
Glock C, Nagpal J, Gottschalk A (2015) Microbial rhodopsin optogenetic tools: application for analyses of synaptic transmission and of neuronal network activity in behavior. Methods Mol Biol 1327:87–103
Toga AW, Thompson PM (2003) Mapping brain asymmetry. Nat Rev Neurosci 4:37–48
Suzuki H, Thiele TR, Faumont S, Ezcurra M, Lockery SR, Schafer WR (2008) Functional asymmetry in Caenorhabditis elegans taste neurons and its computational role in chemotaxis. Nature 454:114–117
Bertrand V, Bisso P, Poole RJ, Hobert O (2011) Notch-dependent induction of left/right asymmetry in C. elegans interneurons and motoneurons. Curr Biol 21:1225–1231
Prevedel R, Yoon YG, Hoffmann M, Pak N, Wetzstein G, Kato S, Schrodel T, Raskar R, Zimmer M, Boyden ES et al (2014) Simultaneous whole-animal 3D imaging of neuronal activity using light-field microscopy. Nat Methods 11:727–730
Boulin T, Etchberger JF, Hobert O (2006). Reporter gene fusions. WormBook, pp 1–23
Minevich G, Park DS, Blankenberg D, Poole RJ, Hobert O (2012) CloudMap: a cloud-based pipeline for analysis of mutant genome sequences. Genetics 192:1249–1269
Acknowledgements
Left/right asymmetry research in the Hobert laboratory has been funded by the National Institutes of Health and the Howard Hughes Medical Institute.
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Vidal, B., Hobert, O. (2017). Methods to Study Nervous System Laterality in the Caenorhabditis elegans Model System. In: Rogers, L., Vallortigara, G. (eds) Lateralized Brain Functions. Neuromethods, vol 122. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-6725-4_18
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DOI: https://doi.org/10.1007/978-1-4939-6725-4_18
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