Abstract
The superficial spinal dorsal horn is the first relay station of pain processing. It is also widely accepted that spinal synaptic processing to control the modality and intensity of pain signals transmitted to higher brain centers is primarily defined by inhibitory neurons in the superficial spinal dorsal horn. Earlier studies suggest that the construction of pain processing spinal neural circuits including the GABAergic components should be completed by birth, although major chemical refinements may occur postnatally. Because of their utmost importance in pain processing, we intended to provide a detailed knowledge concerning the development of GABAergic neurons in the superficial spinal dorsal horn, which is now missing from the literature. Thus, we studied the developmental changes in the distribution of neurons expressing GABAergic markers like Pax2, GAD65 and GAD67 in the superficial spinal dorsal horn of wild type as well as GAD65-GFP and GAD67-GFP transgenic mice from embryonic day 11.5 (E11.5) till postnatal day 14 (P14). We found that GABAergic neurons populate the superficial spinal dorsal horn from the beginning of its delineation at E14.5. We also showed that the numbers of GABAergic neurons in the superficial spinal dorsal horn continuously increase till E17.5, but there is a prominent decline in their numbers during the first two postnatal weeks. Our results indicate that the developmental process leading to the delineation of the inhibitory and excitatory cellular assemblies of pain processing neural circuits in the superficial spinal dorsal horn of mice is not completed by birth, but it continues postnatally.
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References
Alaynick WA, Jessell TM, Pfaff SL (2011) SnapShot: spinal cord development. Cell 146(178–178):e1
Allain AE, Baïri A, Meyrand P, Branchereau P (2004) Ontogenic changes of the GABAergic system in the embryonic mouse spinal cord. Brain Res 1000:134–147
Alvarez FJ, Jonas PC, Sapir T, Hartley R, Berrocal MC, Geiman EJ, Todd AJ, Goulding M (2005) Postnatal phenotype and localization of spinal cord V1 derived interneurons. J Comp Neurol 12:177–192
Antal M, Berki AC, Horváth L, O’Donovan MJ (1994) Developmental changes in the distribution of gamma-aminobutyric acid-immunoreactive neurons in the embryonic chick lumbosacral spinal cord. J Comp Neurol 343:228–236
Behar T, Ma W, Hudson L, Barker JL (1994) Analysis of the anatomical distribution of GAD67 mRNA encoding truncated glutamic acid decarboxylase proteins in the embryonic rat brain. Brain Res Dev Brain Res 77:77–87
Berki AC, O’Donovan MJ, Antal M (1995) Developmental expression of glycine immunoreactivity and its colocalization with GABA in the embryonic chick lumbosacral spinal cord. J Comp Neurol 362:583–596
Borromeo MD, Meredith DM, Castro DS, Chang JJ, Tung KC, Guillemot F, Johnson JE (2014) A transcription factor network specifying inhibitory versus excitatory neuron sin the dorsal spinal cord. Development 141:2803–2812
Caspary T, Anderson KV (2003) Patterning cell types in the dorsal spinal cord: what the mouse mutants say. Nat Rev Neurosci 4:289–297
Cheng L, Arata A, Mizuguchi R, Qian Y, Karunaratne A, Gray PA, Arata S, Shirasawa S, Bouchard M, Luo P, Chen CL, Busslinger M, Goulding M, Onimaru H, Ma Q (2004) Tlx3 and Tlx1 are post-mitotic selector genes determining glutamatergic over GABAergic cell fates. Nat Neurosci 7:510–517
De Marchis S, Temoney S, Erdelyi F, Bovetti S, Bovolin P, Szabo G, Puche AC (2004) GABAergic phenotypic differentiation of a subpopulation of subventricular derived migrating progenitors. Eur J Neurosci 20:1307–1317
Dressler GR, Douglass EC (1992) Pax2 is a DNA-binding protein expressed in embryonic kidney and Wilms tumor. Proc Natl Acad Sci USA 89:1179–1183
Erlander MG, Tobin AJ (1991) The structural and functional heterogeneity of glutamic acid decarboxylase: a review. Neurochem Res 16:215–226
Erlander MG, Tillakaratne NJ, Feldblum S, Patel N, Tobin AJ (1991) Two genes encode distinct glutamate decarboxylases. Neuron 7:91–100
Esclapez M, Tillakaratne NJ, Tobin AJ, Houser CR (1993) Comparative localization of mRNAs encoding two forms of glutamic acid decarboxylase with nonradioactive in situ hybridization methods. J Comp Neurol 331:339–362
Esclapez M, Tillakaratne NJ, Kaufman DL, Tobin AJ, Houser CR (1994) Comparative localization of two forms of glutamic acid decarboxylase and their mRNAs in rat brain supports the concept of functional differences between the forms. J Neurosci 14:1834–1855
Foster E, Wildner H, Tudeau L, Haueter S, Ralvenius WT, Jegen M, Johanssen H, Hösli L, Haenraets K, Ghanem A, Conzelmann KK, Bösl M, Zeilhofer HU (2015) Targeted ablation, silencing, and activation establish glycinergic dorsal horn neurons as key components of a spinal gate for pain and itch. Neuron 85:1289–1304
Gao BX, Stricker C, Ziskind-Conhaim L (2001) Transition from GABAergic to glycinergic synaptic transmission in newly formed spinal networks. J Neurophysiol 86:492–502
Goulding M, Lanuza G, Sapir T, Narayan S (2002) The formation of sensorimotor circuits. Curr Opin Neurobiol 12:508–515
Gross MK, Dottori M, Goulding M (2002) Lbx1 specifies somatosensory association interneurons in the dorsal spinal cord. Neuron 34:535–549
Helms AW, Johnson JE (2003) Specification of dorsal spinal cord interneurons. Curr Opin Neurobiol 13:42–49
Huang J, Feng F, Tamamaki N, Yanagawa Y, Obata K, Li Y-Q, Wu S-X (2007) Prenatal and postnatal development of GABAergic neurons in the spinal cord revealed by green fluorescence protein expression in the GAD67-GFP knock-in mouse. Neuroembryol Aging 4:147–154
Hughes DI, Mackie M, Nagy GG, Riddell JS, Maxwell DJ, Szabó G, Erdélyi F, Veress G, Szucs P, Antal M, Todd AJ (2005) P boutons in lamina IX of the rodent spinal cord express high levels of glutamic acid decarboxylase-65 and originate from cells in deep medial dorsal horn. Proc Natl Acad Sci USA 102:9038–9043
Ikenaga T, Urban JM, Gebhart N, Hatta K, Kawakami K, Ono F (2011) Formation of the spinal network in zebrafish determined by domain-specific pax genes. J Comp Neurol 519:1562–1579
Jessell TM (2000) Neuronal specification in the spinal cord: inductive signals and transcriptional codes. Nat Rev Genet 1:20–29
Jessell TM, Sürmeli G, Kelly JS (2011) Motor neurons and the sense of place. Neuron 72:419–424
Kaufman DL, McGinnis JF, Krieger NR, Tobin AJ (1986) Brain glutamate decarboxylase cloned in lambda gt:11 fusion protein produces gamma-aminobutyric acid. Science 232:1138–1140
Kim EJ, Hori K, Wyckoff A, Dickel LK, Koundakjian EJ, Goodrich LV, Johnson JE (2011) Spatiotemporal fate map of neurogenin1 (Neurog1) lineages in the mouse central nervous system. J Comp Neurol 519:1355–1370
Kosaka Y, Kin H, Tatetsu M, Uema I, Takayama C (2012) Distinct development of GABA system int he ventral and dorsal horns int he embryonic mouse spinal cord. Brain Res 1486:39–52
Lawson SJ, Davies HJ, Bennett JP, Lowrie MB (1997) Evidence that spinal interneurons undergo programmed cell death postnatally in the rat. Eur J Neurosci 9:794–799
Lopez-Bendito G, Sturgess K, Erdelyi F, Szabo G, Molnar Z, Paulsen O (2004) Preferential origin and layer destination of GAD65-GFP cortical interneurons. Cereb Cortex 14:1122–1133
Ma W, Behar T, Barker JL (1992) Transient expression of GABA immunoreactivity in the developing rat spinal cord. J Comp Neurol 325:271–290
Mackie M, Hughes DI, Maxwell DJ, Tillakaratne NJ, Todd AJ (2003) Distribution and colocalisation of glutamate decarboxylase isoforms in the rat spinal cord. Neuroscience 119:461–472
Martin DL, Liu H, Martin SB, Wu SJ (2000) Structural features and regulatory properties of the brain glutamate decarboxylases. Neurochem Int 37:111–119
Mckay SE, Oppenheim RW (1991) Lack of evidence for cell death among avian spinal cord interneurons during normal development and following removal of targets and afferents. J Neurobiol 22:721–733
Melzack R, Wall PD (1965) Pain mechanism: a new theory. Science 150:971–979
Mizuguchi R, Kriks S, Cordes R, Gossler A, Ma Q, Goulding M (2006) Ascl1 and Gsh1/2 control inhibitory and excitatory cell fate in spinal sensory interneurons. Nat Neurosci 9:770–778
Mullen RJ, Buck CR, Smith AM (1992) NeuN, a neuronal specific nuclear protein in vertebrates. Development 116:201–211
Nabekura J, Katsurabayashi S, Kakazu Y, Shibata S, Matsubara A, Jinno S, Mizoguchi Y, Sasaki A, Ishibashi H (2004) Developmental switch from GABA to glycine release in single central synaptic terminals. Nat Neurosci 7:17–23
Oliva AA Jr, Jiang M, Lam T, Smith KL, Swann JW (2000) Novel hippocampal interneuronal subtypes identified using transgenic mice that express green fluorescent protein in GABAergic interneurons. J Neurosci 20:3354–3368
Ozaki S, Snider WD (1997) Initial trajectories of sensory axons toward laminar targets in the developing mouse spinal cord. J Comp Neurol 380:215–229
Sengul G, Watson C, Tanaka I, Paxinos G (2013) Atlas of the spinal cord of the rat, mouse, marmoset, rhesus, and human. Elsevier, Amsterdam
Sharma K, Korade Z, Frank E (1994) Development of specific muscle and cutaneous sensory projection sin cultured segments of spinal cord. Development 120:1315–1323
Siembab VC, Smith CA, Zagoraiou L, Berrocal MC, Mentis GZ, Alvarez FJ (2010) Target selection of proprioceptive and motor axon synapses on neonatal V1-derived Ia inhibitory interneurons and Renshaw cells. J Comp Neurol 518:4675–4701
Soghomonian JJ, Martin DL (1998) Two isoforms of glutamate decarboxylase: why? Trends Pharmacol Sci 19:500–505
Somogyi R, Wen X, Ma W, Baerker JL (1995) Developmental kinetics of GAD family mRNAs parallel neurogenesis int he rat spinal cord. J Neurosci 15:2575–2591
Tran TS, Phelps PE (2000) Axons crossing in the ventral commissure express L1 and GAD65 in the developing rat spinal cord. Dev Neurosci 22:228–236
Tran TS, Alijani A, Phelps PE (2003) Unique developmental patterns of GABAergic neurons in rat spinal cord. J Comp Neurol 456:112–226
Wildner H, Das Gupta R, Bröhl D, Heppenstall PA, Zeihofer HU, Birchmeier C (2013) Genome-wide expression analysis of Ptf1a- and Ascl1-deficient mice reveals new markers for distinct dorsal horn interneuron populations contributing to nociceptive reflex plasticity. J Neurosci 33:7299–7307
Acknowledgements
This work was supported by the Hungarian Academy of Sciences (MTA-TKI 242; M.A.), Hungarian Brain Research Program (KTIA_NAP_13-1-2013-0001; M.A., Z.M.), and Hungarian National Research Fund (OTKA PD 108467; Z.M.).
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Balázs, A., Mészár, Z., Hegedűs, K. et al. Development of putative inhibitory neurons in the embryonic and postnatal mouse superficial spinal dorsal horn. Brain Struct Funct 222, 2157–2171 (2017). https://doi.org/10.1007/s00429-016-1331-9
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DOI: https://doi.org/10.1007/s00429-016-1331-9