This work was supported by a research grant MOP 119271 to JMW by the Canadian Institute of Health Research. The authors would like to thank Ms. Yao Fang Tan for her outstanding technical assistance.

注：すべての動物の手順は、トロント大学の比較医学部の動物の健康と福祉のガイドラインに適合。 海馬スライスの調製<ol><li> 125℃で乾燥したオートクレーブを用いて、以下の機器を滅菌：メスハンドル（＃3）（2）、標準パターン鉗子、大（1）、小切開はさみ（左右に角度を付け）（1）、マイクロスプーン（スプーンとフラットスパチュラ端）（1）、丸みを帯びたマイクロスパチュラ（およびテーパ端部を四捨五入）（2）、ファイン絵筆（1）、火災研磨パスツールピペット（2）は、ガーゼ正方形、2×2インチ（5）。 </li><li>場合には、滅菌、無菌の容器に器具を入れ、使用するまで覆われ続ける。すぐに解剖する前に、70％エタノール溶液中で楽器を浸す。 </li><li> 35°C aでインキュベーター中でプレートをウエル/培養培地1mlを添加し、記憶することによって切開手順を開始する前に、培養インサートを6ウェル培養プレートを準備しND 5％CO 2。 </li></ol> 2.無菌層流フード中で解剖ツールを配置<ol><li> 70％エタノールで層流フードをスプレーし、アルコールから滅菌解剖器具を取り外します。アルコールと解剖脳組織との接触を避けるために、無菌のペトリ皿に載っている間楽器が乾燥することができます。 </li><li> 2つの大きな滅菌ペトリ皿で​​滅菌氷冷解剖溶液の堆積物5-7ミリリットル。一皿は、寒さと頭（汚い）、冷却とえぐら脳（クリーン）をすすぐための他の1をきれいにします。脳を解剖用シャーレのふたの1で滅菌ろ紙を置きます。 </li><li>海馬を解剖するための小さなペトリ皿のふたの一つに小さな、滅菌ろ紙を置きます。 2小さな、滅菌ペトリ皿中の滅菌氷冷解剖溶液の堆積物3-5ミリリットル。一皿は1つが、海馬のセクションの分離中のセクションを保持する、えぐら海馬を開催します解剖顕微鏡下。 </li><li>切削ステージに滅菌ろ紙の一部をテーピングし、滅菌カミソリの刃を装着することにより組織チョッパーを準備します。滅菌解剖溶液とろ紙を湿ら。 </li><li>アルコールできれいなバイオバッグをスプレーし、層流クリーンベンチに入れてください。 </li></ol> 3.海馬解剖<ol><li>層流クリーンベンチ外の70％エタノールとP7のSprague Dawleyラット子犬をスプレーし、す​​ぐに層流ベンチの内側に大型無菌の外科用ハサミを用いて動物を首を切る。頭がペトリ皿の1中の氷冷解剖ソリューションにドロップしてみましょう。 </li><li>ペトリ皿に、血を洗い流し、すぐに滅菌ろ紙、腹側を下に頭を転送する。 </li><li>メスを用いて、下にある頭蓋を露出させるように矢状面内の背側表面に沿って切断する。 Tのラットで柔らかく、容易に貫通可能で、基礎となる骨、皮膚を通してカットではなく、彼の年齢。さておき、この &quot;汚い&quot;メスを設定し、脳組織には使用しないでください。 </li><li>小さな切開（側に傾斜し）はさみや鉗子を使用して、ブレグマに頭蓋骨の矢状縫合に沿って頭蓋骨を開き、冠状縫合を矢状縫合によって垂直に交差する頭蓋骨上の解剖学的な点をカット。頭蓋骨の正中線から持ち上げて頭蓋骨フラップを引っ張って鉗子を使用してください。 </li><li>そっと頭蓋骨から脳を持ち上げるために、脳幹の下に、脳の下側にマイクロスプーンを置きます。脳の基底面に視神経と嗅球を露出するために脳を持ち上げます。完全に頭蓋骨から脳を分離するために、小さなハサミでこれらの構造をカット。取り外し、氷冷解剖溶液を含む他の大きなペトリ皿に無傷の脳を転送する。 </li><li>マイクロスプーンを使用して、無菌のろ紙を含む小さなペトリ皿の蓋に脳を転送する。無菌のパスツールピペットを用いて、DIS数滴の脳をすすぐ湿った組織を維持するためのソリューションをsecting。 </li><li> 「クリーン」なメスの刃を使用して、離れて2半球を切った。マイクロスプーンでバック大型シャーレに左半球を転送し、その後の使用のための氷冷解剖溶液に半球PIA側を下に置きます。 </li><li>右半球の内側の顔を見るとエッジ円蓋、海馬の内側縁に沿って白質の顕著なバンドを特定する。滅菌メスを使用すると、円蓋の矢状カットを作るが、メス先端のわずか0.5センチ円蓋をカットするのに十分であるので、注意してください。 </li><li> 2マイクロスパチュラを使用して、脳幹に右手へらを配置し、左側のヘラで上を覆う皮質を持ち上げて右半球からの第1の海馬を削除します。静かに海馬の側脳室および内側の表面が露出する皮質を持ち上げます。白い曲線、采は、表示されるようになるはずです。 </li><li> CURVAとへらの曲率を合わせます采のトゥーレと優しく采下にへらを押してください。左のヘラをスライドさせ、吻側 - 尾側軸に沿って乗って、次に海馬を削除するには、背側方向にへらを持ち上げる。 </li><li>氷のように冷たい解剖溶液と第 2小ペトリ皿に海馬を転送します。左海馬を削除するには左半球で同じ手順を繰り返します。 </li><li>マイクロスパチュラを使用して、慎重に組織チョッパーステージに海馬を転送する。チョッパーブレードの軸に対して互いに垂直それらを隣接して平行に配置する。組織を置き、海馬の上に解剖ソリューションの数滴を追加するために絵筆を使用してください。 </li><li>個々のスライスを削除するには一時停止することなく400μmの切片で組織を切断する（通常、彼らは、ブレードに付着しない）。全海馬が切断された後、穏やかに解離溶液と第 2小ペトリ皿にセクションを転送するために絵筆を使用。 </li><li>広告の下で顕微鏡をissecting、慎重にamicro-へらと絵筆を使用して浮動スライスを分離する。 </li><li>層流フード内インキュベーターと場所からカルチャーインサートが事前に準備された培養プレートを外します。 </li><li>ファイアーポリッシュパスツールピペットを用いて、カルチャーインサート膜の頂端表面にピペットと転送スライスに4-5スライスを描く。次に、絵筆を持つ位置を調整し、個々のセクションと文化インサートの境界線間にスペースを入れてください。 </li><li>無菌のパスツールピペットを用いて、膜の頂端表面から余分な解剖溶液を除去する。 注：ピペットに組織切片を描画ソリューションの回避を除去しながら。代わりに、ゆっくりと溶液を除去するために滅菌ピペットチップとの定期的なピペット（P200またはP1000）を使用します。 </li><li>血清含有培地と35℃のバックインキュベーターに海馬スライスし、5％CO 2で培養プレートを置きます。 注：実験呼び出す場合複数の動物からの文化を生成するために、徹底的に解剖の間に層流クリーンベンチをきれいに。アルコール溶液に楽器を戻し、すべてのペトリディッシュ、ろ紙及び第二解剖前に無菌のかみそりの刃を交換してください。 </li></ol> 4.供給および器官型スライスを維持<ol><li>無菌層流クリーンベンチ内の文化を養う。 </li><li>培養されたセクションの最初の給餌2日後に解剖を行います。滅菌したガラスピペットを用いて吸引し、古い培地。 </li><li>ウェルに新鮮な、無菌の、血清含有培地の1ミリリットルを追加するために、滅菌5ミリリットルの血清学的ピペットを使用してください。 </li><li>静かにカルチャーインサートを交換し、膜表面の下に形成された可能性のある気泡を除去するように注意してください。 </li><li>最初の給餌の後、一日おきに培地を変更します。 </li></ol>新生ニ​​ューロンをラベルにチミジン類似体5.インキュベート組織スライス<ol><li>研究するために海馬の歯状回顆粒細胞の成熟と統合は、そのようなブロモデオキシウリジン（BrdU）のまたはChlorodeoxyuridine（CldU）などのチミジン類似体と器官のスライスを、インキュベートする。ここでは、あるため、生理食塩水での高い溶解度のCldUを使用しています。 </li><li> 3DIVした後、10μg/ mlの最終濃度のために培地を1mlの生理食塩水中の10mg / mlのCldUストック溶液1μlを加える。 BrdUを使用する場合は、分子量の差についての濃度を補正する。培養ウェルにCldUとメディアを追加し、35℃で2時間CldU含有培地で組織をインキュベートする。 </li><li> 35℃でのインキュベーションの2時間後、CldU含有培地を除去し、（上記に概説）通常の給餌スケジュールを再開するために定期的に送り媒体と交換してください。 </li></ol> 6.組織固定およびストレージ<ol><li>治療を適用し、培養実験（図2B）を起動する前に、組織試料を固定するためのタイムラインを確立する。 </li> &lt;所定の日後の切開で李&gt;は、実験室のドラフト内で次の準備：10〜50ミリリットルのビーカーに、リン酸緩衝生理食塩水（PBS）中4％パラホルムアルデヒド（PFA）を含有する。廃棄された培養液のための空のビーカー。小さな鉗子。使い捨てチップとし、千ミリリットルピペット。 </li><li>インキュベーションチャンバーから培養プレート（S）を取り外し、ヒュームフードに転送。ピンセットで個々のウェルプレートインサートを傾けます。次に、廃棄ビーカーに、培養培地と転送を削除するには、ピペットを使用しています。全ての培地を除去していることを確認するために角度を培養プレートを傾ける。 </li><li>一度に1つの培養プレート用媒体を除去完了します。培地が除去されたときに、各培養ウェルに4％PFAを1mlを追加し、パラフィルムでプレートウェルシールする。 24時間4℃の冷蔵庫に必要な、転送プレートと同じ数の培養プレートのために繰り返します。 </li><li> 24時間後、ヒュームフードに次のように準備します。10-50 PBS中の0.1％アジ化ナトリウムを含むミリリットルビーカー。空の廃棄されたPFA（有害物質を廃棄する際に安全上の注意に従ってください）​​用のビーカー。小さな鉗子。使い捨てチップとし、千ミリリットルピペット。 </li><li> PFAを追加するための6.4で説明する手順に従いますが、その代わりにアジ化ナトリウムを含むPBSの1ミリリットルを追加します。一度完全にパラフィルムのエッジをラップし、4℃の冷蔵庫に保存することによって、将来の使用のためのシールウェルプレートに移した。 </li></ol> 7.免疫組織化学のための組織をセクショニング<ol><li>ビブラトームを使用して切片組織を実行します。以下の一連の工程は、器官培養物から使用可能な組織切片の収率を最大限に高める。 注：直ちに海馬解剖とスライスのメッキ以下では、組織は、約400μmの厚さを有している。しかし、インキュベーションチャンバー内の2〜3週間後に、組織切片は、150〜300ミクロンの最後のセクションの厚さで、その結果、平らにし始めます。 </li><li> ＃11メスB：セクション培養組織に以下の項目を準備クレード、ハンドル、氷冷PBS、マイクロ解剖鉗子、および組織をマウントする段階をカットクリーンビブラトームを含むガラスシャーレ。 </li><li>それはプラスチック製インサートハウジングから取り外すことができるように、外科用メスで慎重に円形インサート膜の周囲に沿って切断する。培養されたスライスと、メスの間に十分なスペースを入れてください。 </li><li> PBSを含むペトリ皿に切り離され、インサートメンブレンを転送します。 PBSですすいだ後、ビブラトーム取り付けステージに膜を転送するために鉗子を使用しています。 </li><li>次に、培養されたスライスを囲む過剰膜を除去し、クリーンなエッジを作成するために余分な材料を切り取るためにメスを使用しています。このステップでは、膜は平坦であり、容易に切断面に付着することが確実になる。 </li><li>ビブラトーム切削ステージ上に接着剤の1-2滴を置き、さらには22 G針を使用して層内に広がった。ビブラトームの切断刃に長辺と平行な矩形状に接着剤を広げた。このステップを実行しますすぐに、乾燥からの接着を防止する。 </li><li>切削ステージに海馬スライスを含むトリミング膜を転送し、軽く糊上の膜を配置し、気泡がないことを確認するために鉗子を使用してください。 </li><li>瞬間接着剤が乾燥したように、バックPBS含むペトリ皿に接着膜でビブラトーム舞台を移す。ビブラトームブレードと組織切片を格納するためのアジ化ナトリウムを含有する48ウェルプレートを準備する。 </li><li>貯蔵およびその後の免疫組織化学的染色のためにアジ化ナトリウムを含む48ウェルプレートに器官スライス組織と転送の30μmのセクションを生成するためにビブラトームを使用してください。 </li><li>免疫組織化学染色26,29のために、既存のプロトコルを参照してください。 </li></ol>

<ol>
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J., White, A., Dudek, F. E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interictal+spikes:+harbingers+or+causes+of+epilepsy.">Interictal spikes: harbingers or causes of epilepsy.</a> Neuroscience Letters. 497 (3), 247-250 (2011).</li><li>Lee, H., Lee, D., Park, C. H., Ho, W. K., Lee, S. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=GABA+mediates+the+network+activity-dependent+facilitation+of+axonal+outgrowth+from+the+newborn+granule+cells+in+the+early+postnatal+rat+hippocampus.">GABA mediates the network activity-dependent facilitation of axonal outgrowth from the newborn granule cells in the early postnatal rat hippocampus.</a> The European Journal Of Neuroscience. 36 (6), 2743-2752 (2012).</li><li>Raineteau, O., 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=Conditional+labeling+of+newborn+granule+cells+to+visualize+their+integration+into+established+circuits+in+hippocampal+slice+cultures.">Conditional labeling of newborn granule cells to visualize their integration into established circuits in hippocampal slice cultures.</a> Molecular and Cellular Neurosciences. 32 (4), 344-355 (2006).</li><li>Raineteau, O., Rietschin, L., Gradwohl, G., Guillemot, F., Gahwiler, B. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neurogenesis+in+hippocampal+slice+cultures.">Neurogenesis in hippocampal slice cultures.</a> Molecular And Cellular Neurosciences. 26 (2), 241-250 (2004).</li><li>Kamada, 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=Intrinsic+and+spontaneous+neurogenesis+in+the+postnatal+slice+culture+of+rat+hippocampus.">Intrinsic and spontaneous neurogenesis in the postnatal slice culture of rat hippocampus.</a> The European Journal Of Neuroscience. 20 (10), 2499-2508 (2004).</li><li>Kim, H., Kim, E., Park, M., Lee, E., Namkoong, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Organotypic+hippocampal+slice+culture+from+the+adult+mouse+brain:+a+versatile+tool+for+translational+neuropsychopharmacology.">Organotypic hippocampal slice culture from the adult mouse brain: a versatile tool for translational neuropsychopharmacology.</a> Progress in Neuro-Psychopharmacology &amp; Biological Psychiatry. 41, 36-43 (2013).</li><li>Legradi, A., Varszegi, S., Szigeti, C., Gulya, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adult+rat+hippocampal+slices+as+in+vitro+models+for+neurodegeneration:+Studies+on+cell+viability+and+apoptotic+processes.">Adult rat hippocampal slices as in vitro models for neurodegeneration: Studies on cell viability and apoptotic processes.</a> Brain Research Bulletin. 84 (1), 39-44 (2011).</li><li>Sadgrove, M. P., Laskowski, A., Gray, W. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Examination+of+granule+layer+cell+count,+cell+density,+and+single-pulse+BrdU+incorporation+in+rat+organotypic+hippocampal+slice+cultures+with+respect+to+culture+medium,+septotemporal+position,+and+time+in+vitro.">Examination of granule layer cell count, cell density, and single-pulse BrdU incorporation in rat organotypic hippocampal slice cultures with respect to culture medium, septotemporal position, and time in vitro.</a> The Journal of Comparative Neurology. 497 (3), 397-415 (2006).</li><li>Mielke, J. G., 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=Cytoskeletal,+synaptic,+and+nuclear+protein+changes+associated+with+rat+interface+organotypic+hippocampal+slice+culture+development.">Cytoskeletal, synaptic, and nuclear protein changes associated with rat interface organotypic hippocampal slice culture development.</a> Developmental Brain Research. 160 (2), 275-286 (2005).</li><li>Fabian-Fine, R., Volknandt, W., Fine, A., Stewart, M. G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Age-dependent+pre-+and+postsynaptic+distribution+of+AMPA+receptors+at+synapses+in+CA3+stratum+radiatum+of+hippocampal+slice+cultures+compared+with+intact+brain.">Age-dependent pre- and postsynaptic distribution of AMPA receptors at synapses in CA3 stratum radiatum of hippocampal slice cultures compared with intact brain.</a> European Journal of Neuroscience. 12 (10), 3687-3700 (2000).</li><li>Laplagne, D. 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=Functional+convergence+of+neurons+generated+in+the+developing+and+adult+hippocampus.">Functional convergence of neurons generated in the developing and adult hippocampus.</a> PLoS Biology. 4 (12), e409 (2006).</li><li>McDonald, H. Y., Wojtowicz, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dynamics+of+neurogenesis+in+the+dentate+gyrus+of+adult+rats.">Dynamics of neurogenesis in the dentate gyrus of adult rats.</a> Neuroscience Letters. 385 (1), 70-75 (2005).</li><li>Stone, S. 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=Functional+convergence+of+developmentally+and+adult-generated+granule+cells+in+dentate+gyrus+circuits+supporting+hippocampus-dependent+memory.">Functional convergence of developmentally and adult-generated granule cells in dentate gyrus circuits supporting hippocampus-dependent memory.</a> Hippocampus. 21 (12), 1348-1362 (2011).</li><li>Wang, S., Scott, B. W., Wojtowicz, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Heterogenous+properties+of+dentate+granule+neurons+in+the+adult+rat.">Heterogenous properties of dentate granule neurons in the adult rat.</a> Journal of Neurobiology. 42 (2), 248-257 (2000).</li><li>Wojtowicz, J. M., Kee, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=BrdU+assay+for+neurogenesis+in+rodents.">BrdU assay for neurogenesis in rodents.</a> Nature Protocols. 1 (3), 1399-1405 (2006).</li><li>Fritsch, R. S. E. R., Weibel, E. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Stereological+Methods,+Vol.+1:+Practical+Methods+for+Biological+Morphometry.">Stereological Methods, Vol. 1: Practical Methods for Biological Morphometry.</a> Zeitschrift f&#252;r Allgemeine Mikrobiologie. 21 (8), 630-630 (1981).</li><li>Bunk, E. C., Konig, H. G., Bonner, H. P., Kirby, B. P., Prehn, J. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=NMDA-induced+injury+of+mouse+organotypic+hippocampal+slice+cultures+triggers+delayed+neuroblast+proliferation+in+the+dentate+gyrus:+an+in+vitro+model+for+the+study+of+neural+precursor+cell+proliferation.">NMDA-induced injury of mouse organotypic hippocampal slice cultures triggers delayed neuroblast proliferation in the dentate gyrus: an in vitro model for the study of neural precursor cell proliferation.</a> Brain Research. 1359, 22-32 (2010).</li><li>Kolb, B., Pedersen, B., Ballermann, M., Gibb, R., Whishaw, I. Q. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Embryonic+and+postnatal+injections+of+bromodeoxyuridine+produce+age-dependent+morphological+and+behavioral+abnormalities.">Embryonic and postnatal injections of bromodeoxyuridine produce age-dependent morphological and behavioral abnormalities.</a> The Journal Of Neuroscience : The Official Journal Of The Society For Neuroscience. 19 (6), 2337-2346 (1999).</li><li>Morris, 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=The+genetic+toxicology+of+5-bromodeoxyuridine+in+mammalian+cells.">The genetic toxicology of 5-bromodeoxyuridine in mammalian cells.</a> Mutation Research. 258 (2), 161-188 (1991).</li><li>Bannigan, J., Langman, J. <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+effect+of+5-bromodeoxyuridine+on+the+mammalian+embryo.">The cellular effect of 5-bromodeoxyuridine on the mammalian embryo.</a> Journal Of Embryology And Experimental Morphology. 50, 123-135 (1979).</li><li>Breunig, J. J., Arellano, J. I., Macklis, J. D., Rakic, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Everything+that+glitters+isn't+gold:+a+critical+review+of+postnatal+neural+precursor+analyses.">Everything that glitters isn't gold: a critical review of postnatal neural precursor analyses.</a> Cell Stem Cell. 1 (6), 612-627 (2007).</li><li>Duque, A., Rakic, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Different+effects+of+bromodeoxyuridine+and+[3H]thymidine+incorporation+into+DNA+on+cell+proliferation,+position,+and+fate.">Different effects of bromodeoxyuridine and [3H]thymidine incorporation into DNA on cell proliferation, position, and fate.</a> The Journal Of Neuroscience : The Official Journal Of The Society For Neuroscience. 31 (42), 15205-15217 (2011).</li><li>Namba, T., Mochizuki, H., Onodera, M., Namiki, H., Seki, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Postnatal+neurogenesis+in+hippocampal+slice+cultures:+early+in+vitro+labeling+of+neural+precursor+cells+leads+to+efficient+neuronal+production.">Postnatal neurogenesis in hippocampal slice cultures: early in vitro labeling of neural precursor cells leads to efficient neuronal production.</a> Journal of Neuroscience Research. 85 (8), 1704-1712 (2007).</li></ol>

The authors declare that they have no competing financial interests.

CldU（またはBrdU）の投与後に、薬理学的薬剤の適用のタイムラインは、特定の発生の窓の間に新生児DGCsを標的とするように選択することができる。例えば、仮想的な薬剤は、GABAが脱分極される発達段階にある未成熟ニューロンの年齢と一致することが提案されている第二週後CldU注射中に適用することができる。このプロトコルを使用して今後の研究では、薬剤と「テーラー「目的の特定の?...

Adult neurogenesis in the mammalian hippocampus represents a remarkable example of the brain&#8217;s innate capacity for adaptability and plasticity. Dentate granule cells (DGCs) are generated from a renewable pool of neural progenitor cells in the hippocampal dentate gyrus, which is one of the two presently well-characterized neurogenic regions in the mammalian brain, and is thought to be particularly important for learning and memory. The hippocampus is part of the limbic system and has a deep location within the mammalian brain, which makes it a difficult target for precise pharmacological manipulation. Additionally, aberrant neurogenesis has been implicated in conditions, such as epilepsy, schizophrenia, and Alzheimer&#8217;s disease, which has prompted interest in understanding the influence of various pharmacological agents during the maturation and survival of newborn neurons. The distinction between postnatal and adult neurogenesis is blurred and previous studies have shown that many features of in vivo neuronal development in the early postnatal period and adulthood are similar25. Here we emphasize postnatal neurogenesis and suggest possible applications to adult neurogenesis.
Organotypic slice cultures provide an efficient in vitro method for studying various physiological properties of the mammalian hippocampus. The value of slice cultures prepared from rodent brains can be summarized in three main qualities: 1) the protocol is straightforward and requires readily available materials; 2) slice cultures allow for pharmacological studies that eliminate complex variables such as the deep anatomic location of the hippocampus and circumvents the blood brain barrier1; and 3) the well characterized structure of the hippocampus and tri-synaptic circuit is preserved2. Previous investigators have used the organotypic hippocampal culture to study synaptic development and physiology3,4, gliogenesis5-7, ischemic brain damage8,9, neuroprotection and neurorepair10-12 as well as epilepsy13-15.The slice cultures could also provide a useful model system allowing for the monitoring of cell development in conjunction with labeling of cells with green fluorescent protein (GFP) or other vital markers.
Slice cultures have also been previously employed to study postnatal hippocampal neurogenesis16-19, but one important factor in the majority of these studies is the well-characterized degeneration that results from explanting tissue from adult animals after approximately 2 weeks in vitro20,21. For this reason, slice cultures are typically prepared from early post-natal (P5-P10) mice or rat pups, which utilizes the improved viability of early postnatal brain tissue for culturing22. While previous studies have shown that the early postnatal and adult hippocampus differ with regards to synaptic physiology and the expression of specific neuronal subtypes23,24, there is substantial conservation of the choreographed developmental program that newborn dentate granule cells proceed through during maturation25. Additionally, recent studies have suggested that the physiological characteristics of newborn DGCs in culture are very similar to immature neurons in the acute hippocampal slice preparation16.

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	<tbody>
		<tr height="26">
			<td height="46" rowspan="2" style="height:47px;width:265px;">Name of Reagent/ Equipment</td>
			<td rowspan="2" style="width:131px;">Company</td>
			<td rowspan="2" style="width:135px;">Catalog Number</td>
			<td rowspan="2" style="width:239px;">Comments/Description</td>
		</tr>
		<tr height="20">
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:265px;">5-chloro-2&#39;-deoxyuridine (CldU)</td>
			<td style="width:131px;">MP Biomedicals</td>
			<td align="right" style="width:135px;">105478</td>
			<td style="width:239px;">Hazardous, Carcinogenic</td>
		</tr>
		<tr height="80">
			<td height="80" style="height:80px;width:265px;">Cell culture inserts, 30mm diameter, 0.4&#181;m pore size</td>
			<td style="width:131px;">Thermo scientific&#160;</td>
			<td align="right" style="width:135px;">140660</td>
			<td style="width:239px;">Nuclon delta coating on these inserts provides better tissue adhesion and improves slice quality.</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:265px;">Conical Centrifuge tubes (sterile)</td>
			<td style="width:131px;">Fisher Scientific</td>
			<td style="width:135px;">14-432-22</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Dissector scissors (angled to side)</td>
			<td style="width:131px;">Fine Science Tools&#160;</td>
			<td style="width:135px;">14082-09</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:265px;">Minimum essential medium (MEM)</td>
			<td style="width:131px;">Gibco</td>
			<td style="width:135px;">11095; liquid</td>
			<td style="width:239px;">Store at 4&#176;C</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:265px;">Eclipse Ni-U fluorescent microscope</td>
			<td style="width:131px;">Nikon</td>
			<td style="width:135px;"></td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="80">
			<td height="80" style="height:80px;width:265px;">Glue for tissue</td>
			<td style="width:131px;">Krazy Glue</td>
			<td style="width:135px;">KG585</td>
			<td style="width:239px;">Use minimum amount of glue to achieve adhesion as any tissue exposed to glue will be unusable for IHC.</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Hank&#8217;s Balanced Salt Solution (HBSS) (500 mL)</td>
			<td style="width:131px;">Gibco</td>
			<td style="width:135px;">14025-092</td>
			<td style="width:239px;">Store at 4&#176;C</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Horse Serum Heat Inactivated (500 mL)</td>
			<td style="width:131px;">Gibco</td>
			<td style="width:135px;">16050-122</td>
			<td style="width:239px;">Make 50 mL aliquots and store at -20&#176;C</td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:265px;">Kimwipes</td>
			<td style="width:131px;">Kimberly-Clarke</td>
			<td style="width:135px;">TW 31KYPBX</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="60">
			<td height="60" style="height:60px;width:265px;">Modified glass pipettes (bottom of Pasteur pipette removed and edge smoothed with Bunsen flame)</td>
			<td style="width:131px;"></td>
			<td style="width:135px;"></td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Petri Dish (100mm x 15mm) and (60mm x 15mm)</td>
			<td style="width:131px;">Fisher Brand</td>
			<td style="width:135px;">FB0875712 and FB0875713A</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Scalpel blades #11</td>
			<td style="width:131px;">Fine Science Tools</td>
			<td style="width:135px;">10011-00</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Scalpel handle #3</td>
			<td style="width:131px;">Fine Science Tools</td>
			<td style="width:135px;">10003-12</td>
			<td style="width:239px;"></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Serological Pipettes</td>
			<td style="width:131px;">Sorfa Medical Plastic Co.</td>
			<td style="width:135px;">P8050</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Standard Pattern forceps</td>
			<td style="width:131px;">Fine Science Tools</td>
			<td style="width:135px;">11000-12</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Sterile vacuum filter</td>
			<td style="width:131px;">Thermo-Scientific</td>
			<td style="width:135px;">565-0020</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Surgical Scissors</td>
			<td style="width:131px;">Fine Science Tools</td>
			<td style="width:135px;">14054-13</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:265px;">Syringe driven filter unit</td>
			<td style="width:131px;">Millipore-Millex</td>
			<td style="width:135px;">SLGP033RS</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:265px;">Tissue chopper with moveable stage</td>
			<td style="width:131px;">Stoelting&#160;</td>
			<td align="right" style="width:135px;">51425</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;width:265px;">Fine tip paintbrush</td>
			<td style="width:131px;"></td>
			<td style="width:135px;"></td>
			<td></td>
		</tr>
	</tbody>
</table>

organotypic slice cultures for studies of postnatal neurogenesis

ここでは、器官型スライス培養技術を用いて齧歯類の脳内の海馬出生後の神経新生を研究するための技術が記載されている。開発海馬歯状回への薬理学的薬剤の直接適用を可能にしながらこの方法では、海馬の特徴的地形形態を維持します。さらに、スライス培養は、最大4週間維持することができ、したがって、一つは新生児顆粒ニューロンの成熟過程を研究することを可能にする。そのような海馬の深い解剖学的位置だけでなく、血液脳関門に関連する不確実性などの複雑な変数を除外してスライス培養は、海馬スライスの効率的な薬理学的操作を可能にします。これらの理由から、我々は、出生後の神経新生の研究のために特異的器官切片培養を最適化しようとした。

1）スライスは、インビトロで 10-21日間（DIV）の後に海馬スライスの特徴的な形態学的特徴を維持すること、および2）新生児DGCsを定量することができる：器官培養成体神経発生の研究に適しているかどうかを決定する彼らは二つの主な基準を満たすことが必要一般的に成人の神経発生研究に用いられる標準的な免疫組織化学的技術を使用して。第一の基準については、 図1A</stron...

Watch this Scientific Journal Video about Organotypic Slice Cultures for Studies of Postnatal Neurogenesis at JoVE.com

Organotypic Slice Cultures for Studies of Postnatal Neurogenesis

ここでは、器官型スライス培養技術を用いて海馬の出生後の神経新生を研究するための技術が記載されている。この方法では、成人の神経新生のin vitro操作を可能にし、培養海馬への薬理学的薬剤の直接適用することができます。

生後神経発生の研究のための器官型スライス培養

Here we describe a technique for studying hippocampal postnatal neurogenesis in the rodent brain using the organotypic slice culture technique. This ...

organotypic-slice-cultures-for-studies-of-postnatal-neurogenesis

Research

JoVE Journal

Developmental Biology

12.2K ビュー.  University of Toronto. ここでは、器官型スライス培養技術を用いて海馬の出生後の神経新生を研究するための技術が記載されている。この方法では、成人の神経新生のin vitro操作を可能にし、培養海馬への薬理学的薬剤の直接適用することができます。 

ビデオ: Organotypic Slice Cultures for Studies of Postnatal Neurogenesis

Ex Utero Electroporation and Organotypic Slice Culture of Mouse Hippocampal Tissue

Mouse genetics offers a powerful tool determining the role of specific genes during development. Analyzing the resulting phenotypes by immunohistochemical and molecular methods provides information of potential target genes and signaling pathways. To further elucidate specific regulatory mechanisms requires a system allowing the manipulation of only a small number of cells of a specific tissue by either overexpression, ablation or re-introduction of specific genes and follow their fate during development. To achieve this ex utero electroporation of hippocampal structures, especially the dentate gyrus, followed by organotypic slice culture provides such a tool. Using this system to generate mosaic deletions allows determining whether the gene of interest regulates cell-autonomously developmental processes like progenitor cell proliferation or neuronal differentiation. Furthermore it facilitates the rescue of phenotypes by re-introducing the deleted gene or its target genes. In contrast to in utero electroporation the ex utero approach improves the rate of successfully targeting deeper layers of the brain like the dentate gyrus. Overall ex utero electroporation and organotypic slice culture provide a potent tool to study regulatory mechanisms in a semi-native environment mirroring endogenous conditions.

Ex Utero Electroporation and Organotypic Slice Culture of Mouse Hippocampal Tissue

Here we present a protocol providing a tool to examine regulatory mechanisms of specific genes during hippocampal development. Employing ex utero electroporation and organotypic slice culture allows the up- and down-regulation of the expression of genes of interest in single cells and follow their fate during development.

子宮外エレクトロポレーションおよびマウスの海馬組織の器官型スライス培養

Mouse genetics offers a powerful tool determining the role of specific genes during development. Analyzing the resulting phenotypes by immunohistochemical ...

発生生物学

Generation of Genetically Modified Organotypic Skin Cultures Using Devitalized Human Dermis

Organotypic cultures allow the reconstitution of a 3D environment critical for cell-cell contact and cell-matrix interactions which mimics the function and physiology of their in vivo tissue counterparts. This is exemplified by organotypic skin cultures which faithfully recapitulates the epidermal differentiation and stratification program. Primary human epidermal keratinocytes are genetically manipulable through retroviruses where genes can be easily overexpressed or knocked down. These genetically modified keratinocytes can then be used to regenerate human epidermis in organotypic skin cultures providing a powerful model to study genetic pathways impacting epidermal growth, differentiation, and disease progression. The protocols presented here describe methods to prepare devitalized human dermis as well as to genetically manipulate primary human keratinocytes in order to generate organotypic skin cultures. Regenerated human skin can be used in downstream applications such as gene expression profiling, immunostaining, and chromatin immunoprecipitations followed by high throughput sequencing. Thus, generation of these genetically modified organotypic skin cultures will allow the determination of genes that are critical for maintaining skin homeostasis.

The goal of this paper is to provide a comprehensive and detailed protocol on how to generate genetically modified human organotypic skin from epidermal keratinocytes and devitalized human dermis.

失活ヒト真皮を用いて遺伝子組換え器官皮膚培養物の生成

Organotypic cultures allow the reconstitution of a 3D environment critical for cell-cell contact and cell-matrix interactions which mimics the function ...

Generating Primary Fibroblast Cultures from Mouse Ear and Tail Tissues

Primary cells are derived directly from tissue and are thought to be more representative of the physiological state of cells in vivo than established cell lines. However, primary cell cultures usually have a finite life span and need to be frequently re-established. Fibroblasts are an easily accessible source of primary cells. Here, we discuss a simple and quick experimental procedure to establish primary fibroblast cultures from ears and tails of mice. The protocol can be used to establish primary fibroblast cultures from ears stored at RT for up to 10 days. When the protocol is carefully followed, contaminations are unlikely to occur despite the use of non-sterile tissue stored for extended time in some cases. Fibroblasts proliferate rapidly in culture and can be expanded to substantial numbers before undergoing replicative senescence.

We describe a simple and quick experimental procedure for generating primary fibroblasts from the ears and tails of mice. The procedure does not require special animal training and can be used for the generation of fibroblast cultures from ears stored at RT for up to 10 days.

マウスの耳としっぽの組織から生成初代線維芽細胞培養

Primary cells are derived directly from tissue and are thought to be more representative of the physiological state of cells in vivo than established cell ...

Imaging Cleared Embryonic and Postnatal Hearts at Single-cell Resolution

Single clonal tracing and analysis at the whole-heart level can determine cardiac progenitor cell behavior and differentiation during cardiac development, and allow for the study of the cellular and molecular basis of normal and abnormal cardiac morphogenesis. Recent emerging technologies of retrospective single clonal analyses make the study of cardiac morphogenesis at single cell resolution feasible. However, tissue opacity and light scattering of the heart as imaging depth is increased hinder whole-heart imaging at single cell resolution. To overcome these obstacles, a whole-embryo clearing system that can render the heart highly transparent for both illumination and detection must be developed. Fortunately, in the last several years, many methodologies for whole-organism clearing systems such as CLARITY, Scale, SeeDB, ClearT, 3DISCO, CUBIC, DBE, BABB and PACT have been reported. This lab is interested in the cellular and molecular mechanisms of cardiac morphogenesis. Recently, we established single cell lineage tracing via the ROSA26-CreERT2; ROSA26-Confetti system to sparsely label cells during cardiac development. We adapted several whole embryo-clearing methodologies including Scale and CUBIC (clear, unobstructed brain imaging cocktails and computational analysis) to clear the embryo in combination with whole mount staining to image single clones inside the heart. The heart was successfully imaged at single cell resolution. We found that Scale can clear the embryonic heart, but cannot effectively clear the postnatal heart, while CUBIC can clear the postnatal heart, but damages the embryonic heart by dissolving the tissue. The methods described here will permit the study of gene function at a single clone resolution during cardiac morphogenesis, which, in turn, can reveal the cellular and molecular basis of congenital heart defects.

We describe a protocol to volumetrically image fluorescent protein labeled cells deep inside intact embryonic and postnatal hearts. Utilizing tissue-clearing methods in combination with whole mount staining, single fluorescent protein-labeled cells inside an embryonic or postnatal heart can be imaged clearly and accurately.

イメージングは​​、単一細胞の解像度で胚および出生後の心をクリア

Single clonal tracing and analysis at the whole-heart level can determine cardiac progenitor cell behavior and differentiation during cardiac development, ...

Visualization of Cell Cycle Variations and Determination of Nucleation in Postnatal Cardiomyocytes

Cardiomyocytes are prone to variations of the cell cycle, such as endoreduplication (continuing rounds of DNA synthesis without karyokinesis and cytokinesis) and acytokinetic mitosis (karyokinesis but no cytokinesis). Such atypical cell cycle variations result in polyploid and multinucleated cells rather than in cell division. Therefore, to determine cardiac turnover and regeneration, it is of crucial importance to correctly identify cardiomyocyte nuclei, the number of nuclei per cell, and their cell cycle status. This is especially true for the use of nuclear markers for identifying cell cycle activity, such as thymidine analogues Ki-67, PCNA, or pHH3. Here, we present methods for recognizing cardiomyocytes and their nuclearity and for determining their cell cycle activity. We use two published transgenic systems: the Myh6-H2B-mCh transgenic mouse line, for the unequivocal identification of cardiomyocyte nuclei, and the CAG-eGFP-anillin mouse line, for distinguishing cell division from cell cycle variations. Combined together, these two systems ease the study of cardiac regeneration and plasticity.

To distinguish cell division from cell cycle variations in cardiomyocytes, we present protocols using two transgenic mouse lines: Myh6-H2B-mCh transgenic mice, for the unequivocal identification of cardiomyocyte nuclei, and CAG-eGFP-anillin mice, for distinguishing cell division from cell cycle variations.

生後心筋細胞における細胞周期変化の可視化と核の決意

Cardiomyocytes are prone to variations of the cell cycle, such as endoreduplication (continuing rounds of DNA synthesis without karyokinesis and ...

Whole-cell Patch-clamp Recordings of Isolated Primary Epithelial Cells from the Epididymis

The epididymis is an essential organ for sperm maturation and reproductive health. The epididymal epithelium consists of intricately connected cell types that are distinct not only in molecular and morphological features but also in physiological properties. These differences reflect their diverse functions, which together establish the necessary microenvironment for the post-testicular sperm development in the epididymal lumen. The understanding of the biophysical properties of the epididymal epithelial cells is critical for revealing their functions in sperm and reproductive health, under both physiological and pathophysiological conditions. While their functional properties have yet to be fully elucidated, the epididymal epithelial cells can be studied using the patch-clamp technique, a tool for measuring the cellular events and the membrane properties of single cells. Here, we describe the methods of cell isolation and whole-cell patch-clamp recording to measure the electrical properties of primary dissociated epithelial cells from the rat cauda epididymides.

We present a protocol that combines cell isolation and whole-cell patch-clamp recording to measure the electrical properties of the primary dissociated epithelial cells from the rat cauda epididymides. This protocol allows for investigation of the functional properties of primary epididymal epithelial cells to further elucidate the physiological role of the epididymis.

精巣上体から分離した一次上皮細胞の全細胞パッチクランプ記録

The epididymis is an essential organ for sperm maturation and reproductive health. The epididymal epithelium consists of intricately connected cell types ...

Three-dimensional Organotypic Cultures of Vestibular and Auditory Sensory Organs

The sensory organs of the inner ear are challenging to study in mammals due to their inaccessibility to experimental manipulation and optical observation. Moreover, although existing culture techniques allow biochemical perturbations, these methods do not provide a means to study the effects of mechanical force and tissue stiffness during development of the inner ear sensory organs. Here we describe a method for three-dimensional organotypic culture of the intact murine utricle and cochlea that overcomes these limitations. The technique for adjustment of a three-dimensional matrix stiffness described here permits manipulation of the elastic force opposing tissue growth. This method can therefore be used to study the role of mechanical forces during inner ear development. Additionally, the cultures permit virus-mediated gene delivery, which can be used for gain- and loss-of-function experiments. This culture method preserves innate hair cells and supporting cells and serves as a potentially superior alternative to the traditional two-dimensional culture of vestibular and auditory sensory organs.

Three-dimensional organotypic cultures of the murine utricle and cochlea in optically clear collagen I gels preserve innate tissue morphology, allow for mechanical stimulation through adjustment of matrix stiffness, and permit virus-mediated gene delivery.

前庭と聴覚の感覚器官の三次元切片培養

The sensory organs of the inner ear are challenging to study in mammals due to their inaccessibility to experimental manipulation and optical observation. ...

Single-cell Transcriptomic Analyses of Mouse Pancreatic Endocrine Cells

Pancreatic endocrine cells, which are clustered in islets, regulate blood glucose stability and energy metabolism. The distinct cell types in islets, including insulin-secreting &#946; cells, are differentiated from common endocrine progenitors during the embryonic stage. Immature endocrine cells expand via cell proliferation and mature during a long postnatal developmental period. However, the mechanisms underlying these processes are not clearly defined. Single-cell RNA-sequencing is a promising approach for the characterization of distinct cell populations and tracing cell lineage differentiation pathways. Here, we describe a method for the single-cell RNA-sequencing of isolated pancreatic &#946; cells from embryonic, neonatal and postnatal pancreases.

We describe a method for the isolation of endocrine cells from embryonic, neonatal and postnatal pancreases followed by single-cell RNA sequencing. This method allows analyses of pancreatic endocrine lineage development, cell heterogeneity and transcriptomic dynamics.

マウス膵臓内分泌細胞の単一細胞トランスクリプトーム解析

Pancreatic endocrine cells, which are clustered in islets, regulate blood glucose stability and energy metabolism. The distinct cell types in islets, ...

Neurogenesis Using P19 Embryonal Carcinoma Cells

The P19 cell line derived from a mouse embryo-derived teratocarcinoma has the ability to differentiate into the three germ layers. In the presence of retinoic acid (RA), the suspension cultured P19 cell line is induced to differentiate into neurons. This phenomenon is extensively investigated as a neurogenesis model in vitro. Therefore, the P19 cell line is very useful for molecular and cellular studies associated with neurogenesis. However, protocols for neuronal differentiation of P19 cell line described in the literature are very complex. The method developed in this study are simple and will play a part in elucidating the molecular mechanisms in neurodevelopmental abnormalities and neurodegenerative diseases.

The P19 mouse embryonic carcinoma cell line (P19 cell line) is widely used for studying the molecular mechanism of neurogenesis with great simplification compared to in vivo analysis. Here, we present a protocol for retinoic acid-induced neurogenesis in the P19 cell line.

P19胚癌細胞を用いて神経新生

The P19 cell line derived from a mouse embryo-derived teratocarcinoma has the ability to differentiate into the three germ layers. In the presence of ...

Real-time Bioluminescence Imaging of Notch Signaling Dynamics during Murine Neurogenesis

Notch signaling regulates the maintenance of neural stem/progenitor cells by cell-cell interactions. The components of Notch signaling exhibit dynamic expression. Notch signaling effector Hes1 and the Notch ligand Delta-like1 (Dll1) are expressed in an oscillatory manner in neural stem/progenitor cells. Because the period of the oscillatory expression of these genes is very short (2 h), it is difficult to monitor their cyclic expression. To examine such rapid changes in the gene expression or protein dynamics, fast response reporters are required. Because of its fast maturation kinetics and high sensitivity, the bioluminescence reporter luciferase is suitable to monitor rapid gene expression changes in living cells. We used a destabilized luciferase reporter for monitoring the promoter activity and a luciferase-fused reporter for visualization of protein dynamics at single cell resolution. These bioluminescence reporters show rapid turnover and generate very weak signals; therefore, we have developed a highly sensitive bioluminescence imaging system to detect such faint signals. These methods enable us to monitor various gene expression dynamics in living cells and tissues, which are important information to help understand the actual cellular states.

Neural stem/progenitor cells exhibit various expression dynamics of Notch signaling components that lead to different outcomes of cellular events. Such dynamic expression can be revealed by real-time monitoring, not by static analysis, using a highly sensitive bioluminescence imaging system that enables visualization of rapid changes in gene expressions.

マウス神経新生時のノッチシグナル伝達ダイナミクスのリアルタイム生物発光イメージング

Notch signaling regulates the maintenance of neural stem/progenitor cells by cell-cell interactions. The components of Notch signaling exhibit dynamic ...