Name: quantitative in vitro assay to measure neutrophil adhesion to activated primary human microvascular endothelial cells under static conditions
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この作品は、麻酔と周術期ケアのUCSF学科によってサポートされていました。

1。微小血管内皮細胞のメッキとメンテナンス<ol><li>命令を供給メーカーによるとあなたの微小血管内皮細胞を解凍し、成長する。このプロトコルでは、細胞をEGM-2 MVメディア（ロンザ）で増殖させた、そしてそれは全ての実験は、継代数に起因するいかなる変動を最小限に抑えるために解凍から2週間以内に行われることが推奨される。 HMVECロンと私たちの実験は4〜9の通路との間で行われ?...

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成功した好中球/微小血管内皮細胞接着アッセイのための最も重要なステップは次のとおりである：1）低継数（&lt;9）、健康な内皮細胞の使用は、低密度（ すなわち &lt;5×10 6個の細胞で孤立した好中球を維持2） / ml）と分離の2時間以内にそれらを使用して、それぞれ、3）気難しいカルセインAMで標識された好中球の洗浄および好中球からのカルセインのECの汚染や損失を最小限...

血管内皮の循環血液と直接接触しているので、一意的に感染または損傷時に迅速な炎症反応を開始させる位置している。内皮細胞（ECS）の保存された細菌成分と危険分子の多様性、ならびにTNFαなどの炎症性メディエーターホストに対する受容体を認識する明白なパターン認識受容体。これらの受容体の活性化は、分泌性サイトカイン（ 例えば、IL-6、IL-8、CXCL1およびCCL2）へのECを誘導し、そしてその細胞表面1の接着分子（ 例えば、E / P-セレクチン、VCAM-1およびICAM-1）をアップレギュレートする、2。これらの分子は、すべての感染性病原体の宿主をクリアし、組織修復を3,4を開始するために感染や傷害部位への白血球の局在を促進する。感染に好中球応答が血管内皮と応答の間でよく調整された相互作用を伴う好中球。 EC活性化、ILアポン8が分泌され、感染症やけが5,6のサイトに家に好中球を可能に内皮に血管内の勾配を形成する。 E / P-セレクチン好中球の取り込みを仲介し、好中球の細胞表面上にglycomoleculesと比較的弱い団体を通じてローリング。これらの相互作用は、その同族受容体へのIL-8結合とともに、堅牢な、インテグリン媒介アタッチメントおよび内皮細胞表面7-10に好中球の最終的な逮捕を容易にします。停止した後、好中球は、直接病原体を排除するために、感染の特定の部位への脈管構造から移動病原体の拡散を防ぐために好中球細胞外トラップを生成し、創傷治癒を促進し、単球、マクロファージおよび樹状などの他の白血球を補充する追加の因子を放出することができ細胞11-17。 microvへの好中球の接着を定量するためのインビトロ方法は、この報告書に記載ascularはTNFα宿主炎症性メディエータによる活性化した後にECを。このアッセイは、ECの活性化のではなく、好中球を評価するために設計されている。初代ヒト好中球は、第密度勾配分離を用いて単離され、次いで、カルセインアセトキシメチル（AM）で標識される。生細胞加水カルセイン内エステラーゼは、492から495 nmおよび513から516 nmの18の放射の励起と高蛍光カルセイン分子にAM。蛍光標識された好中球は、その後、EC単層と共にインキュベートし、非付着性好中球は、その後、除去される。残りの結合した好中球の蛍光は、その後、蛍光分光光度計を用いて測定し、ウェルあたりの総好中球の蛍光入力のパーセントとして計算される。この方法は、分光光度法で使用される結合したカルセイン-標識された好中球を直接より定性的なEC交流から読み出さを与えるために蛍光顕微鏡を用いて可視化することができるというさらなる利点を有するtivati​​on。このアッセイは、静的条件下で行われるので、好中球の接着カスケードに生じるごく初期のイベントが評価される。これは、そのE-セレクチンとの相互作用が中断されたときTNFα処理ヒト肺微小血管EC（HMVEC-肺）単層への好中球の順守を大幅に低減されることを示すために、E-セレクチン遮断抗体を使用して、この報告書で確認された。 TNFαに加えて、我々は正常Toll様受容体1/2アゴニストペプチドグリカン関連リポタンパク質（PAL）、ムレインリポタンパク質（MLP）とPam3Cysによってヒト臍帯静脈EC（HUVEC）活性化の程度を決定するために、このアッセイを使用しているPam3Cys 19,20によってHMVEC-肺の活性化。さらに、我々は正常にこの方法論は、さまざまな互換性があることを示唆し、キナーゼ阻害剤とHMVEC-肺における表面および細胞質タンパク質のRNAiによるノックダウンした後に、このアッセイを使用した生化学的およびscreeninグラムアッセイ20。要約すると、このアッセイは、in vitroで炎症性メディエーターによってECの活性化の程度にアクセスするため、使いやすい、再現性、より機能的な方法を提供します。

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 <td>HMVEC-Lung</td>
 <td>Lonza</td>
 <td>CC-2527</td>
 <td></td>
 </tr>
 <tr>
 <td>EGM-2 MV</td>
 <td>Lonza</td>
 <td>CC-3202</td>
 <td></td>
 </tr>
 <tr>
 <td>HBSS</td>
 <td>Life Technologies</td>
 <td>14175-095</td>
 <td>Can be substituted with any vendor</td>
 </tr>
 <tr>
 <td>48-well Tissue Culture Plates</td>
 <td>BD Falcon</td>
 <td>353078</td>
 <td></td>
 </tr>
 <tr>
 <td>PBS (without phenol red)</td>
 <td>UCSF Cell Culture Facility</td>
 <td>CCFAL001 </td>
 <td>Can be substituted with any vendor</td>
 </tr>
 <tr>
 <td>D-PBS (without Ca2+ and Mg2+ and phenol red)</td>
 <td>UCSF Cell Culture Facility</td>
 <td>CCFAL003</td>
 <td>Can be substituted with any vendor</td>
 </tr>
 <tr>
 <td>RPMI-1640 (without phenol red)</td>
 <td>Life Technologies</td>
 <td>11835-030</td>
 <td></td>
 </tr>
 <tr>
 <td>Polymorphprep</td>
 <td>Axis-Shield</td>
 <td>1114683</td>
 <td></td>
 </tr>
 <tr>
 <td>calcein AM</td>
 <td>Life Technologies</td>
 <td>C3099</td>
 <td>(0.995 mM) stock soln</td>
 </tr>
 <tr>
 <td>Trypan Blue Solution</td>
 <td>Sigma-Aldrich</td>
 <td>T8154</td>
 <td></td>
 </tr>
 <tr>
 <td>40 &mu;M filters</td>
 <td>VWR</td>
 <td>21008-949</td>
 <td>Can be substituted with any vendor</td>
 </tr>
 <tr>
 <td>FLUOstar OPTIMA Spectrophotometer</td>
 <td>BMG LABTECH</td>
 <td>-</td>
 <td></td>
 </tr>
 </tbody>
</table>

quantitative in vitro assay to measure neutrophil adhesion to activated primary human microvascular endothelial cells under static conditions

血管内皮は、炎症反応に不可欠な役割を果たしている。炎症の急性期の間に、内皮細胞（ECの）保存された微生物成分又は宿主由来の危険分子による宿主メディエーター直接によって活性化される。活性化されたECの特急サイトカイン、動員ケモカインおよび接着分子は、感染症やけがの部位で白血球を活性化し、維持する。好中球は到着する最初の白血球であり、両方の細胞の表面に存在する接着分子のさまざまな内皮に付着する。好中球の主な機能は、直接、微生物の脅威を除去するための追加の因子の放出を介して他の白血球の動員を促進し、創傷修復を開始することである。したがって、内皮への採用とアタッチメントは、炎症応答の開始に重要なステップです。本稿では、用いたin vitro好中球接着アッセイで説明カルセインAM-標識された一次ヒト好中球は、静的条件下で微小血管内皮細胞の活性化の程度を定量する。この方法は、蛍光分光光度計で定量し、同じサンプルは、直接結合好中球のより定性的評価のために蛍光顕微鏡を用いて可視化することができるというさらなる利点を有する。

好中球結合アッセイを使用して、信頼性、再現性のある結果を得るためには、 図1のHMVEC-肺に示すように、健康および微小血管内皮細胞のコンフルエントには、アッセイの当日に最適であることが不可欠である。また、低継番号微小血管のECは（9未満通路すなわち ）が使用されることが不可欠であり、従って、我々は、解凍から2週間以内にすべての実験を行うことをお勧?...

Watch this Scientific Journal Video about Quantitative In vitro Assay to Measure Neutrophil Adhesion to Activated Primary Human Microvascular Endothelial Cells under Static Conditions at JoVE.com

Quantitative In vitro Assay to Measure Neutrophil Adhesion to Activated Primary Human Microvascular Endothelial Cells under Static Conditions

感染部位における活性化内皮への好中球の順守は、ホストの炎症反応に不可欠なコンポーネントです。を可能にした好中球結合アッセイは、この報告書に記載<em&gt; in vitroで</em静的な条件下での炎症性メディエーターによって活性化内皮細胞への結合初代ヒト好中球の&gt;定量。

定量的な<em&gt;インビトロ</em静的な条件の下で活性化された初代ヒト微小血管内皮細胞への好中球の接着を測定するために&gt;アッセイ

The vascular  endothelium plays an integral part in the inflammatory response. During the  acute phase of inflammation, endothelial cells (ECs) are ...

Research

JoVE Journal

Immunology and Infection

Quantitative In vitro Assay to Measure Neutrophil Adhesion to Activated Primary Human Microvascular Endothelial Cells under Static Conditions

In Vitro Assay of Bacterial Adhesion onto Mammalian Epithelial Cells

In Vitro Assay of Bacterial Adhesion onto Mammalian Epithelial Cells

哺乳類上皮細胞上に細菌付着のインビトロアッセイ

To cause infections, bacteria must colonize their host. Bacterial pathogens express various molecules or structures able to promote attachment to host ...

Isolation of Human Umbilical Vein Endothelial Cells and Their Use in the Study of Neutrophil Transmigration Under Flow Conditions

フローの状況下で好中球移住研究におけるヒト臍帯静脈内皮細胞とそれらの使用の分離

Neutrophils are the most abundant type of white blood cell. They form an essential part of the innate immune system1. During acute inflammation, ...

An In vitro Co-infection Model to Study Plasmodium falciparum-HIV-1 Interactions in Human Primary Monocyte-derived Immune Cells

An In vitro Co-infection Model to Study Plasmodium falciparum-HIV-1 Interactions in Human Primary Monocyte-derived Immune Cells

不定冠詞<em&gt;のin vitro</em研究する&gt;共同感染モデル<em&gt;熱帯熱マラリア原虫（Plasmodium falciparum）</emヒトの第一次単球由来の免疫細胞に&gt;-HIV-1の相互作用

Plasmodium falciparum, the causative agent  of the deadliest form of malaria, and human immunodeficiency virus type-1 (HIV-1) are among the most important ...

In vitro Coculture Assay to Assess Pathogen Induced Neutrophil Trans-epithelial Migration

In vitro Coculture Assay to Assess Pathogen Induced Neutrophil Trans-epithelial Migration

インビトロ 病原体誘導性好中球トランス上皮移動を評価するコーカルチャーアッセイ

Mucosal surfaces serve as protective barriers against pathogenic organisms.&#160;Innate immune responses are activated upon sensing pathogen leading to ...

A Flow Adhesion Assay to Study Leucocyte Recruitment to Human Hepatic Sinusoidal Endothelium Under Conditions of Shear Stress

せん断応力のヒト肝類洞内皮条件のことを白血球の募集を研究するフロー接着アッセイ

Leucocyte infiltration into human liver tissue is a common process in all adult inflammatory liver diseases. Chronic infiltration can drive the ...

Human Neutrophil Flow Chamber Adhesion Assay

ヒト好フローチャンバー接着アッセイ

Neutrophil firm adhesion to endothelial cells plays a critical role in inflammation in both health and disease. The process of neutrophil firm adhesion ...

Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes

Tリンパ球におけるインテグリン活性化の研究のための静的な接着アッセイ

T lymphocyte adhesion is required for multiple T cell functions, including migration to sites of inflammation and formation of immunological synapses with ...

Real-time Imaging of Endothelial Cell-cell Junctions During Neutrophil Transmigration Under Physiological Flow

好中球遊出の下で生理的流れの間に内皮細胞 - 細胞接合のリアルタイムイメージング

During inflammation, leukocytes leave the circulation and cross the endothelium to fight invading pathogens in underlying tissues. This process is known ...

In Vitro and In Vivo Model to Study Bacterial Adhesion to the Vessel Wall Under Flow Conditions

In Vitro and In Vivo Model to Study Bacterial Adhesion to the Vessel Wall Under Flow Conditions

in vitroおよびin vivoモデルでは血管壁の下でフローの状況に細菌付着を研究するために、

In order to cause endovascular infections and infective endocarditis, bacteria need to be able to adhere to the vessel wall while being exposed to the ...

Assay of Adhesion Under Shear Stress for the Study of T Lymphocyte-Adhesion Molecule Interactions

Tリンパ球接着分子の相互作用の研究のための接着性の下でせん断応力の測定

Overall, T cell adhesion is a critical component of function, contributing to the distinct processes of cellular recruitment to sites of inflammation and ...