Name: adeno-associated virus-mediated transgene expression in genetically defined neurons of the spinal cord
Uploaded: 2018-05-12T13:00:00
Description: Watch this Scientific Journal Video about Adeno-associated Virus-mediated Transgene Expression in Genetically Defined Neurons of the Spinal Cord at JoVE.com

Vi takker Hanns Ulrich Zeilhofer for generøst støtter dette arbejde. Hendrik Wildner blev støttet af Olga Mayenfisch foundation. Vi takker Carmen Birchmeier for Lmx1b antistof.

Alle dyreforsøg blev godkendt af det schweiziske kantonale Veterinærkontoret (Zürich) og er i overensstemmelse og overensstemmelse med alle relevante lovgivningsmæssige og institutionelle retningslinjer.
Bemærk: Alle materialer sammen med respektive producenter og/eller leverandører er angivet i Tabel af materialer.
1. generation af Cre-afhængige AAV vektorer
Bemærk: En bred vifte af Cre-afhængige vektorer med fors...

<ol>
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J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neuronal+circuitry+for+pain+processing+in+the+dorsal+horn.">Neuronal circuitry for pain processing in the dorsal horn.</a> Nat Rev Neurosci. 11 (12), 823-836 (2010).</li><li>Sandkuhler, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Models+and+mechanisms+of+hyperalgesia+and+allodynia.">Models and mechanisms of hyperalgesia and allodynia.</a> Physiol Rev. 89 (2), 707-758 (2009).</li><li>Zeilhofer, H. U., Wildner, H., Yevenes, G. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fast+synaptic+inhibition+in+spinal+sensory+processing+and+pain+control.">Fast synaptic inhibition in spinal sensory processing and pain control.</a> Physiol Rev. 92 (1), 193-235 (2012).</li><li>Azim, E., Jiang, J., Alstermark, B., Jessell, T. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Skilled+reaching+relies+on+a+V2a+propriospinal+internal+copy+circuit.">Skilled reaching relies on a V2a propriospinal internal copy circuit.</a> Nature. 508 (7496), 357-363 (2014).</li><li>Cui, L., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+Early+RET++Deep+Dorsal+Spinal+Cord+Interneurons+in+Gating+Pain.">Identification of Early RET+ Deep Dorsal Spinal Cord Interneurons in Gating Pain.</a> Neuron. 91 (6), 1413 (2016).</li><li>Foster, E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeted+ablation,+silencing,+and+activation+establish+glycinergic+dorsal+horn+neurons+as+key+components+of+a+spinal+gate+for+pain+and+itch.">Targeted ablation, silencing, and activation establish glycinergic dorsal horn neurons as key components of a spinal gate for pain and itch.</a> Neuron. 85 (6), 1289-1304 (2015).</li><li>Francois, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+Brainstem-Spinal+Cord+Inhibitory+Circuit+for+Mechanical+Pain+Modulation+by+GABA+and+Enkephalins.">A Brainstem-Spinal Cord Inhibitory Circuit for Mechanical Pain Modulation by GABA and Enkephalins.</a> Neuron. 93 (4), 822-839 (2017).</li><li>Peirs, C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dorsal+Horn+Circuits+for+Persistent+Mechanical+Pain.">Dorsal Horn Circuits for Persistent Mechanical Pain.</a> Neuron. 87 (4), 797-812 (2015).</li><li>Petitjean, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dorsal+Horn+Parvalbumin+Neurons+Are+Gate-Keepers+of+Touch-Evoked+Pain+after+Nerve+Injury.">Dorsal Horn Parvalbumin Neurons Are Gate-Keepers of Touch-Evoked Pain after Nerve Injury.</a> Cell Rep. 13 (6), 1246-1257 (2015).</li><li>Zhang, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identifying+local+and+descending+inputs+for+primary+sensory+neurons.">Identifying local and descending inputs for primary sensory neurons.</a> J Clin Invest. 125 (10), 3782-3794 (2015).</li><li>Haenraets, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Spinal+nociceptive+circuit+analysis+with+recombinant+adeno-associated+viruses:+the+impact+of+serotypes+and+promoters.">Spinal nociceptive circuit analysis with recombinant adeno-associated viruses: the impact of serotypes and promoters.</a> J Neurochem. , (2017).</li><li>Abraira, V. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Cellular+and+Synaptic+Architecture+of+the+Mechanosensory+Dorsal+Horn.">The Cellular and Synaptic Architecture of the Mechanosensory Dorsal Horn.</a> Cell. 168 (1-2), 295-310 (2017).</li><li>Wildner, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Genome-wide+expression+analysis+of+Ptf1a-+and+Ascl1-deficient+mice+reveals+new+markers+for+distinct+dorsal+horn+interneuron+populations+contributing+to+nociceptive+reflex+plasticity.">Genome-wide expression analysis of Ptf1a- and Ascl1-deficient mice reveals new markers for distinct dorsal horn interneuron populations contributing to nociceptive reflex plasticity.</a> J Neurosci. 33 (17), 7299-7307 (2013).</li><li>Inquimbert, P., Moll, M., Kohno, T., Scholz, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stereotaxic+injection+of+a+viral+vector+for+conditional+gene+manipulation+in+the+mouse+spinal+cord.">Stereotaxic injection of a viral vector for conditional gene manipulation in the mouse spinal cord.</a> J Vis Exp. (73), e50313 (2013).</li><li>Kohro, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+new+minimally-invasive+method+for+microinjection+into+the+mouse+spinal+dorsal+horn.">A new minimally-invasive method for microinjection into the mouse spinal dorsal horn.</a> Sci Rep. 5, 14306 (2015).</li><li>Bourane, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Gate+control+of+mechanical+itch+by+a+subpopulation+of+spinal+cord+interneurons.">Gate control of mechanical itch by a subpopulation of spinal cord interneurons.</a> Science. 350 (6260), 550-554 (2015).</li><li>Bourane, S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+a+spinal+circuit+for+light+touch+and+fine+motor+control.">Identification of a spinal circuit for light touch and fine motor control.</a> Cell. 160 (3), 503-515 (2015).</li><li>Duan, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Identification+of+spinal+circuits+transmitting+and+gating+mechanical+pain.">Identification of spinal circuits transmitting and gating mechanical pain.</a> Cell. 159 (6), 1417-1432 (2014).</li><li>Gutierrez-Mecinas, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preprotachykinin+A+is+expressed+by+a+distinct+population+of+excitatory+neurons+in+the+mouse+superficial+spinal+dorsal+horn+including+cells+that+respond+to+noxious+and+pruritic+stimuli.">Preprotachykinin A is expressed by a distinct population of excitatory neurons in the mouse superficial spinal dorsal horn including cells that respond to noxious and pruritic stimuli.</a> Pain. 158 (3), 440-456 (2017).</li><li>Awatramani, R., Soriano, P., Rodriguez, C., Mai, J. J., Dymecki, S. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Cryptic+boundaries+in+roof+plate+and+choroid+plexus+identified+by+intersectional+gene+activation.">Cryptic boundaries in roof plate and choroid plexus identified by intersectional gene activation.</a> Nat Genet. 35 (1), 70-75 (2003).</li><li>Kim, J. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Linking+genetically+defined+neurons+to+behavior+through+a+broadly+applicable+silencing+allele.">Linking genetically defined neurons to behavior through a broadly applicable silencing allele.</a> Neuron. 63 (3), 305-315 (2009).</li><li>Kim, J. C., Dymecki, S. 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Intraspinal injektion af AAVs kan blive en kraftfuld teknik i et forskningslaboratorium, gør det muligt for analysen af spinal celler med en høj tidsmæssige og rumlige opløsning. Denne protokol giver transduktion af de tre vigtigste spinale segmenter innerveres af sensoriske neuroner udvide deres perifere axoner til hindlimb. Transducing tre segmenter producerer robuste og reproducerbare adfærdsmæssige data. Det giver også mulighed for afprøvning af en større sensoriske område end muligt efter en enkelt intrasp...

Den dorsale rygmarven er afgørende for informationsudvekslingen mellem periferien af kroppen og hjernen. Sensoriske stimuli som varme, kulde, tryk, eller skadelige stimuli er opdaget af specialiserede perifere neuroner, som formidler disse oplysninger til neuroner i rygmarven dorsal Hornet. Her, et komplekst netværk af hæmmende og excitatoriske interneurons modulerer og til sidst relæer sensorisk information via spinal projektion neuroner til supraspinal websteder1,2. Beregninger udført af spinal inter- og projektion neuroner gate sensorisk information, således bestemme hvilke er undertrykt eller videresendes på hvilken intensitet. Ændringer i integrationen af sensoriske stimuli, såsom en ændret balance mellem hæmning og excitation, kan forårsage sensoriske dysfunktioner som overfølsomhed eller allodyni (smertefulde sensationer efter normalt ikke-smertefuld stimulation). Disse ændringer er anset for at være den underliggende årsag til forskellige kroniske smerter hedder3,4. Spinal kredsløb er derfor af stor betydning i sensorisk forarbejdning og dermed i opfattelsen af en organisme miljø og self. Med de nylige fremkomsten og kombination af molekylære, genetiske og kirurgiske teknikker, der giver den præcise manipulation af genetisk identificerede spinal neuron delpopulationer, forskere nu begyndt at forstå de underliggende spinal kredsløb ansvarlig for behandlingen af forskellige sensoriske modaliteter.
Intraspinal injektion af rAAV i wild-type eller Transgene mus har i høj grad bidraget til manipulation, analyse og forståelse af funktionen af specifikke delmængder af spinal neuroner5,6,7, 8 , 9 , 10 , 11. denne teknik giver mulighed for levering af markør proteiner (som normal god landbrugspraksis / normal god landbrugspraksis fusion proteiner), reporter proteiner (f.eks GCaMP) eller effektor proteiner (såsom bakteriel toksiner, channelrhodopsin eller en receptorer) i et rumligt begrænset måde til spinal neuroner. Lokal injektion af Cre-afhængige rAAVs i Transgene mus udtrykker Cre recombinase i et bestemt undersæt af spinal neuroner giver den specifikke analyse af de respektive neuronal befolkning. Vi har anvendt denne teknik til at mærke, ablate, hæmme eller aktivere spinal glycinergic neuroner påviser, at de er en væsentlig del af spinal porten kontrollere smerter og kløe transmission7. I disse eksperimenter aktiveret intraspinal injektion af Cre-afhængige rAAV i GlyT2::Cre mus selektiv manipulation af glycinergic neuroner i lumbal rygmarven. Dermed kan samtidige manipulation af supraspinal kredsløb, der indeholder glycinergic neuroner afgørende for overlevelse af dyret undgås.
Mens en intraspinal injektion af rAAVs begrænser infektion til webstedet af injektion, kan viral transduktion forekomme ikke blot i lokale neuroner, men også i neuroner, der tilsluttes injektionsstedet via cytoskeletale fremskrivninger. Sidstnævnte er ofte bruges til at spore CNS områder giver neuronal input til en bestemt kernen i hjernen. Infektion af cytoskeletale fremskrivninger kan dog også være en forstyrrende faktor når en afgrænset befolkning af neuroner skal undersøges på et bestemt websted. For at løse disse problemer, har vi for nylig gennemført en omfattende analyse af AAV serotyper og udtryk kassetter til at identificere serotyper og projektledere, der kan bruges til enten minimere eller maksimere retrograd transduktion. I forbindelse med denne specifikke forskning i spinal kredsløb analyserede vi forskellige serotyper og initiativtagere evne til at retrogradely transduce neuroner i dorsalrodsganglier (DRG), den rostralt ventromedial medulla (RVM) og den somatosensoriske cortex 12. den teknik, der er skitseret i denne protokol kan derfor bruges til at analysere spinal neuroner på injektionsstedet eller at analysere projektion neuroner, der giver input til webstedet injiceres i rygmarven. I protokollen beskrevet her, udføres tre injektioner af rAAV i venstre side af lumbal rygmarven for at aktivere transduktion af neuroner i de tre lumbale segmenter (L3-L5). L3-L5 segmenter modtage hovedparten af sensoriske input fra hindlimb ipsilaterale til injektionsstedet. Vi viser, at funktionel manipulation af genetisk mærket neuroner i L3-L5 er tilstrækkelig til at fremkalde robust adfærdsmæssige ændringer, hvilket giver funktionelle beviser for funktionen kredsløb af sådan en genetisk mærket neuron undertype.

<table>
	<tbody>
		<tr>
			<td>Equipment</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>micropipette puller: DMZ-Universal-Electrode-Puller</td>
			<td>Zeitz</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>anesthesia unit: Oxymat3 oxygen concentrator</td>
			<td>Weinmann</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>anesthesia unit: VIP 3000 Veterinary Vaporizer</td>
			<td>Midmark</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Heat mat: Mio Star Thermocare 100</td>
			<td>Migros</td>
			<td>717614700000</td>
			<td></td>
		</tr>
		<tr>
			<td>Electric shaver</td>
			<td>Philips</td>
			<td>BT9290</td>
			<td></td>
		</tr>
		<tr>
			<td>surgical microscope (OPMI pico)</td>
			<td>Zeiss</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Small animal stereotaxic apparatus</td>
			<td>Kopf</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Neurostar StereoDrive (optional)</td>
			<td>Neurostar</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Model 51690 Cunningham mouse spinal adaptor</td>
			<td>Harvard Apparatus</td>
			<td>72-4811</td>
			<td></td>
		</tr>
		<tr>
			<td>PHD Ultra syringe pump with nanomite</td>
			<td>Harvard Apparatus</td>
			<td>70-3601</td>
			<td></td>
		</tr>
		<tr>
			<td>Hamilton 701 RN 10 &#956;l glass microliter syringe</td>
			<td>Hamilton</td>
			<td>7635-01</td>
			<td></td>
		</tr>
		<tr>
			<td>Hamilton Removable needle (RN) compression fitting 1 mm</td>
			<td>Hamilton</td>
			<td>55750-01</td>
			<td></td>
		</tr>
		<tr>
			<td>fine dentistry drilling apparatus: Osada success 40</td>
			<td>Osada</td>
			<td>OS-40</td>
			<td></td>
		</tr>
		<tr>
			<td>spherical cutter, 0.5mm</td>
			<td>Busch</td>
			<td>12001005B</td>
			<td></td>
		</tr>
		<tr>
			<td>electronic von Frey anesthesiometer</td>
			<td>IITC</td>
			<td>23905</td>
			<td></td>
		</tr>
		<tr>
			<td>flexible von Frey hairs</td>
			<td>IITC</td>
			<td>#7</td>
			<td></td>
		</tr>
		<tr>
			<td>LSM710 Pascal confocal microscope</td>
			<td>Zeiss</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>0.8 NA &#215; 20 Plan-apochromat objective</td>
			<td>Zeiss</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>1.3 NA &#215; 40 EC Plan-Neofluar oil-immersion objective</td>
			<td>Zeiss</td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Surgical Tools</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Scalpel Handle #4, 13cm</td>
			<td>Fine Science Tools</td>
			<td>10004-13</td>
			<td></td>
		</tr>
		<tr>
			<td>Extra Fine Bonn Scissors</td>
			<td>Fine Science Tools</td>
			<td>14084-08</td>
			<td></td>
		</tr>
		<tr>
			<td>Adson forceps, 1 x 2 teeth, 12 cm</td>
			<td>Fine Science Tools</td>
			<td>11027-12</td>
			<td></td>
		</tr>
		<tr>
			<td>Friedman-Pearson rongeurs, curved, 0.7 mm cup</td>
			<td>Fine Science Tools</td>
			<td>16121-14</td>
			<td></td>
		</tr>
		<tr>
			<td>Dumont #2 laminectomy forceps</td>
			<td>Fine Science Tools</td>
			<td>11223-20</td>
			<td></td>
		</tr>
		<tr>
			<td>Olsen-Hegar needle holders, serrated, 8.5 mm clamp length</td>
			<td>Fine Science Tools</td>
			<td>12002-12</td>
			<td></td>
		</tr>
		<tr>
			<td>Fine forceps #5</td>
			<td>Fine Science Tools</td>
			<td>11254-20</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Consumables and Chemicals</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Thin-wall glass capillary, 1mm outside diameter</td>
			<td>World Precision Instruments</td>
			<td>TW 100-3</td>
			<td></td>
		</tr>
		<tr>
			<td>Syringes (1, 5 and 20 ml)</td>
			<td>B. Braun</td>
			<td>(9166917V, 4606051V, 4606205V)</td>
			<td></td>
		</tr>
		<tr>
			<td>26G beveled needle</td>
			<td>B. Braun</td>
			<td>4665457</td>
			<td></td>
		</tr>
		<tr>
			<td>Sterile scalpel blades</td>
			<td>B. Braun</td>
			<td>BB523</td>
			<td></td>
		</tr>
		<tr>
			<td>Surgical sutures Safil Quick+ 4/0, absorbable</td>
			<td>B. Braun</td>
			<td>C1046220</td>
			<td></td>
		</tr>
		<tr>
			<td>Surgical sutures Premilene 5/0, non-absorbable</td>
			<td>B. Braun</td>
			<td>C0932191</td>
			<td></td>
		</tr>
		<tr>
			<td>Sterile PBS or saline (0.9%)</td>
			<td></td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Ethanol, 70% (disinfectant)</td>
			<td></td>
			<td>NA</td>
			<td></td>
		</tr>
		<tr>
			<td>Iodine solution (e.g. Braunol)</td>
			<td>B. Braun</td>
			<td>18380</td>
			<td></td>
		</tr>
		<tr>
			<td>Anaesthetics&#160; (e.g. Attane isoflurane)</td>
			<td>Provet</td>
			<td>2222</td>
			<td></td>
		</tr>
		<tr>
			<td>Aldasorber</td>
			<td>Provet</td>
			<td>333526</td>
			<td></td>
		</tr>
		<tr>
			<td>analgesics (e.g. buprenorphine: temgesic)</td>
			<td>Indivior</td>
			<td>GTIN: 7680419310018</td>
			<td></td>
		</tr>
		<tr>
			<td>Ophthalmic ointment (e.g. vita-pos)</td>
			<td>Pharma medica</td>
			<td>GTIN: 4031626710635</td>
			<td></td>
		</tr>
		<tr>
			<td>Cotton swabs (e.g. from)</td>
			<td>IVF Hartmann</td>
			<td>1628100</td>
			<td></td>
		</tr>
		<tr>
			<td>Facial tissues (e.g. from)</td>
			<td>Uehlinger AG</td>
			<td>2015.10018</td>
			<td></td>
		</tr>
		<tr>
			<td>Superfrost plus microscope slides</td>
			<td>ThermoScientific</td>
			<td>J1800AMNZ</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Mice</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>C57BL/6J mice&#160; (wildtype)</td>
			<td>The Jackson Laboratory</td>
			<td>RRID:IMSR_JAX:000664</td>
			<td></td>
		</tr>
		<tr>
			<td>Rorbtm1.1(cre)Hze/J mice (ROR&#946;Cre)</td>
			<td>The Jackson Laboratory</td>
			<td>RRID:IMSR_JAX:023526</td>
			<td></td>
		</tr>
		<tr>
			<td>&#160;Gt(ROSA)26Sortm14(CAG-tdTomato)Hze/J mice (R26Tom)</td>
			<td>The Jackson Laboratory</td>
			<td>RRID: IMSR_JAX:007914</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Viral vectors</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>AAV1.CB7.CI.eGFP.WPRE.rBG (AAV1.CAG.eGFP)</td>
			<td>Penn Vector Core</td>
			<td>AV-1-PV1963</td>
			<td></td>
		</tr>
		<tr>
			<td>AAV1.CAG.flex.eGFP.WPRE.bGH (AAV1.CAG.flex.eGFP)</td>
			<td>Penn Vector Core</td>
			<td>AV-1-ALL854</td>
			<td></td>
		</tr>
		<tr>
			<td>AAV1.CAG.flex.tdTomato.WPRE.bGH (AAV1.CAG.flex.tdTomato)</td>
			<td>Penn Vector Core</td>
			<td>AV-1-ALL864</td>
			<td></td>
		</tr>
		<tr>
			<td>AAV1.EF1a.flex.DTA.hGH (AAV1.EF1a.flex.DTA)</td>
			<td>Penn Vector Core</td>
			<td>Custom production</td>
			<td></td>
		</tr>
		<tr>
			<td>AAV1.hSyn.DIO.hM3D(Gq)-mCherry.hGH (AAV.flex.hM3D(Gi))</td>
			<td>Penn Vector Core</td>
			<td>Custom production</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Plasmids</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>pAAV.hSyn.flex.hM3D(Gq)-mCherry</td>
			<td>Addgene</td>
			<td>44361</td>
			<td></td>
		</tr>
		<tr>
			<td>pAAV.EF1&#945;.flex.hChR2(H134R)-eYFP</td>
			<td>Addgene</td>
			<td>20298</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Bacteria</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>MDS42</td>
			<td>ScarabGenomics</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Stbl3</td>
			<td>ThermoScientific</td>
			<td>C737303</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Reagents</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>EndoFree Plasmid Maxi Kit</td>
			<td>Quiagen</td>
			<td>12362</td>
			<td></td>
		</tr>
		<tr>
			<td>NucleoBond PC 500</td>
			<td>Machery &#38; Nagel</td>
			<td>740574</td>
			<td></td>
		</tr>
		<tr>
			<td>clozapine-N-oxide (CNO)</td>
			<td>Enzo Life Sciences</td>
			<td>BBL-NS105-0025</td>
			<td></td>
		</tr>
		<tr>
			<td>chloroquine diphosphate salt</td>
			<td>Sigma</td>
			<td>C6628</td>
			<td></td>
		</tr>
		<tr>
			<td>histamine</td>
			<td>Sigma</td>
			<td>H7125</td>
			<td></td>
		</tr>
		<tr>
			<td>Dapi</td>
			<td>Invitrogen</td>
			<td>D3571</td>
			<td></td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Catalog Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Antibodies (dilution)</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Rabbit anti-GFP (1:1000)</td>
			<td>Molecular Probes</td>
			<td>RRID:AB_221570</td>
			<td></td>
		</tr>
		<tr>
			<td>Rabbit anti-NeuN (1:3000)</td>
			<td>Abcam</td>
			<td>RRID:AB_10711153</td>
			<td></td>
		</tr>
		<tr>
			<td>Goat anti-Pax2 (1 : 200)</td>
			<td>R &#38; D Systems</td>
			<td>RRID:AB_10889828</td>
			<td></td>
		</tr>
		<tr>
			<td>Guinea pig anti-Lmx1b (1 : 10 000)</td>
			<td>Dr Carmen Birchmeier</td>
			<td>Muller et al. 2002</td>
			<td></td>
		</tr>
		<tr>
			<td>Rabbit anti-GFAP (1 : 1000)</td>
			<td>DakoCytomation</td>
			<td>RRID:AB_10013382</td>
			<td></td>
		</tr>
		<tr>
			<td>Secondary antibodies raised in donkey (1:800)</td>
			<td>Jackson ImmunoResearch Laboratories</td>
			<td>NA</td>
			<td></td>
		</tr>
	</tbody>
</table>

adeno-associated virus-mediated transgene expression in genetically defined neurons of the spinal cord

Selektiv manipulation af spinal neuronal delpopulationer er hovedsagelig opnået ved hjælp af to forskellige metoder: 1) stilling genetik, hvorved dobbelt eller tredobbelt Transgene mus er genereret for at opnå selektiv udtryk for en journalist eller effektor gen (f.eks.fra Rosa26 locus) i den ønskede spinal befolkning. 2) intraspinal injektion af Cre-afhængige rekombinant adeno-associeret virus (rAAV); Her injiceres Cre-afhængige AAV vektorer kodning for reporter eller effektor gen valg i rygmarven af mus udtrykker Cre recombinase i den ønskede neuronal delpopulation. Denne protokol beskriver hvordan man kan generere Cre-afhængige rAAV vektorer og sådan transduce neuroner i dorsal Hornet af lumbal rygmarven segmenter L3-L5 med rAAVs. Som de lumbal spinal segmenter L3-L5 innerveres af disse perifere sensoriske neuroner, der sender sensorisk information fra hindlimbs, kan spontan adfærd og reaktioner på sensoriske tests anvendt til ipsilaterale til injektion side hindlimb være analyseret for at afhøre funktionen af de manipulerede neuroner i sensorisk forarbejdning. Vi giver eksempler på hvordan denne teknik kan bruges til at analysere genetisk defineret delmængder af spinal neuroner. De vigtigste fordele ved virus-medieret transgen udtryk i Cre Transgene mus i forhold til klassisk reporter mus-induceret transgen udtryk er følgende: 1) forskellige Cre-afhængige rAAVs kodning forskellige reporter eller effektor proteiner kan være injiceres en enkelt Cre transgene linje, således at overvinde behovet for at oprette flere flere Transgene mus linjer. 2) intraspinal injektion begrænser manipulation af Cre-udtrykker celler injektionsstedet og lang tid efter injektion. De største ulemper er: 1) Reporter gen expression fra rAAVs er mere variabel. 2) kirurgi er forpligtet til at transduce de spinal neuroner af interesse. Hvilken af de to metoder er mere passende, afhænger af neuron befolkning og forskning spørgsmål behandles.

For at illustrere de udtryk niveauer, der kan opnås af intraspinal injektion af rAAV kodning en markør protein, injiceres vi først AAV1. CAG.eGFP i lumbal rygmarv fra wild-type mus. Tre injektioner fordelt ca 1 mm fra hinanden produceret en næsten kontinuerlig infektion af lumbal spinal segmenter L3 til L5 (figur 1A-C). Virus injektion på en dybde på 300 µm fra spinal overfladen fører til dominerende infektion af celler i rygmarven do...

Watch this Scientific Journal Video about Adeno-associated Virus-mediated Transgene Expression in Genetically Defined Neurons of the Spinal Cord at JoVE.com

Adeno-associated Virus-mediated Transgene Expression in Genetically Defined Neurons of the Spinal Cord

Adeno-associeret Virus-medieret transgen udtryk i genetisk definerede neuroner i rygmarven

Intraspinal injektion af recombinase afhænger af rekombinant adeno-associeret virus (rAAV) kan bruges til at manipulere nogen genetisk mærket celletype i rygmarven. Her beskriver vi, hvordan du transduce neuroner i dorsal Hornet af lumbal rygmarven. Denne teknik gør det muligt for funktionelle forhør af undertypen manipulerede neuron.

Selective manipulation of spinal neuronal subpopulations has mainly been achieved by two different methods: 1) Intersectional genetics, whereby double or ...

Research

JoVE Journal

Neuroscience

Dissection and Culture of Commissural Neurons from Embryonic Spinal Cord

Commissural neurons have been widely used to investigate the mechanisms underlying axon guidance during embryonic spinal cord development. The cell bodies ...

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication

Development of neural circuitries and locomotion can be studied using neonatal rodent spinal cord central pattern generator (CPG) behavior. We demonstrate ...

Viral Tracing of Genetically Defined Neural Circuitry

Viral Sporing af genetisk Defineret neurale kredsløb

Classical methods for studying neuronal circuits are fairly low throughput. Transsynaptic viruses, particularly the pseudorabies (PRV) and rabies virus ...

Spinal Cord Transection in the Larval Zebrafish

Spinal Cord transection i larvestadiet zebrafisk

Mammals fail in sensory and motor recovery following spinal cord injury due to lack of axonal regrowth below the level of injury as well as an inability ...

RNA-Seq Analysis of Differential Gene Expression in Electroporated Chick Embryonic Spinal Cord

RNA-Seq analyse af differentiel genekspression i elektroporerede Chick embryonale Spinal Cord

In ovo electroporation of the chick neural tube is a fast and inexpensive method for identification of gene function during neural development. Genome ...

Diffusion Imaging in the Rat Cervical Spinal Cord

Diffusion Imaging i Rat Cervical Spinal Cord

Magnetic resonance imaging (MRI) is the state of the art approach for assessing the status of the spinal cord noninvasively, and can be used as a ...

Zebrafish In Situ Spinal Cord Preparation for Electrophysiological Recordings from Spinal Sensory and Motor Neurons

Zebrafish In Situ Spinal Cord Preparation for Electrophysiological Recordings from Spinal Sensory and Motor Neurons

Zebrafisk<em&gt; In Situ</em&gt; Spinal Cord Forberedelse til Elektrofysiologiske Optagelser fra Spinal sensoriske og motoriske neuroner

Zebrafish, first introduced as a developmental model, have gained popularity in many other fields. The ease of rearing large numbers of rapidly developing ...

Spinal Cord Neurons Isolation and Culture from Neonatal Mice

Spinal Cord Neurons Isolation og Culture fra Neonatal Mus

We present a protocol for the isolation and culture of spinal cord neurons. The neurons are obtained from neonatal C57BL/6 mice and are isolated on ...

Imaging Neural Activity in the Primary Somatosensory Cortex Using Thy1-GCaMP6s Transgenic Mice

Imaging Neural Activity in the Primary Somatosensory Cortex Using Thy1-GCaMP6s Transgenic Mice

Imaging neurale aktivitet i den primære somatosensoriske Cortex ved hjælp af Thy1-GCaMP6s Transgene mus

The mammalian brain exhibits marked symmetry across the sagittal plane. However, detailed description of neural dynamics in symmetric brain regions in ...

Intra-Arterial Delivery of Neural Stem Cells to the Rat and Mouse Brain: Application to Cerebral Ischemia

Intra-arteriel levering af neurale stamceller til rotte og mus hjernen: Ansøgning om cerebral iskæmi

Neural stem cell (NSC) therapy is an emerging innovative treatment for stroke, traumatic brain injury and neurodegenerative disorders. As compared to ...