Name: flow cytometric analysis of natural killer cell lytic activity in human whole blood
Uploaded: 2017-03-17T12:30:00
Description: Watch this Scientific Journal Video about Flow Cytometric Analysis of Natural Killer Cell Lytic Activity in Human Whole Blood at JoVE.com

This project was supported by Agriculture and Food Research Initiative Competitive Grant no. 2100-68003-30395 from the USDA National Institute of Food and Agriculture.

NOT: Tüm kan toplama prosedürleri Appalachian State University (ASU) Kurumsal Değerlendirme Kurulu (KİK) tarafından belirlenen kurallara uygun olarak yapılmıştır. 1. Tam Kan Toplama <ol><li> sertifikalı flebotomist Dünya Sağlık Örgütü kurallarına göre kanımı var. </li><li> Di-Potasyum Etilendiamintetraasetik asit içeren bir 4 ml kan toplama tüpü (K 2 EDTA) içine kan çizin. üreticinin talimatlarına göre kan toplama tüpü ters çevirin. ayrılık kadar...

<ol>
	<li>Cerwenka, A., Lanier, L. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Natural+killer+cells,+viruses+and+cancer.">Natural killer cells, viruses and cancer.</a> Nat Rev Immunol. 1 (1), 41-49 (2001).</li><li>Nieman, D. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exercise,+infection,+and+immunity.">Exercise, infection, and immunity.</a> Int J Sports Med. 15, 131-141 (1994).</li><li>Romeo, J., Warnberg, J., Pozo, T., Marcos, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Physical+activity,+immunity+and+infection.">Physical activity, immunity and infection.</a> Proc Nutr Soc. 69 (3), 390-399 (2010).</li><li>Nieman, D. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Marathon+training+and+immune+function.">Marathon training and immune function.</a> Sports Med. 37 (4-5), 412-415 (2007).</li><li>Simpson, R. J., Kunz, H., Agha, N., Graff, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Exercise+and+the+Regulation+of+Immune+Functions.">Exercise and the Regulation of Immune Functions.</a> Prog Mol Biol Transl Sci. 135, 355-380 (2015).</li><li>Walsh, N. P., 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=Position+statement.+Part+one:+Immune+function+and+exercise.">Position statement. Part one: Immune function and exercise.</a> Exerc Immunol Rev. 17, 6-63 (2011).</li><li>Timmons, B. W., Cieslak, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+natural+killer+cell+subsets+and+acute+exercise:+a+brief+review.">Human natural killer cell subsets and acute exercise: a brief review.</a> Exerc Immunol Rev. 14, 8-23 (2008).</li><li>Westermann, J., Pabst, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Distribution+of+lymphocyte+subsets+and+natural+killer+cells+in+the+human+body.">Distribution of lymphocyte subsets and natural killer cells in the human body.</a> Clin Investig. 70 (7), 539-544 (1992).</li><li>Boyum, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Isolation+of+leucocytes+from+human+blood.+Further+observations.+Methylcellulose,+dextran,+and+ficoll+as+erythrocyteaggregating+agents.">Isolation of leucocytes from human blood. Further observations. Methylcellulose, dextran, and ficoll as erythrocyteaggregating agents.</a> Scand J Clin Lab Invest Suppl. 97, 31-50 (1968).</li><li>McMillan, R., Scott, J. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Leukocyte+labeling+with+51-Chromium.+I.+Technic+and+results+in+normal+subjects.">Leukocyte labeling with 51-Chromium. I. Technic and results in normal subjects.</a> Blood. 32 (5), 738-754 (1968).</li><li>Berk, L. 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=The+effect+of+long+endurance+running+on+natural+killer+cells+in+marathoners.">The effect of long endurance running on natural killer cells in marathoners.</a> Med Sci Sports Exerc. 22 (2), 207-212 (1990).</li><li>McAnulty, L. 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=Effect+of+blueberry+ingestion+on+natural+killer+cell+counts,+oxidative+stress,+and+inflammation+prior+to+and+after+2.5+h+of+running.">Effect of blueberry ingestion on natural killer cell counts, oxidative stress, and inflammation prior to and after 2.5 h of running.</a> Appl Physiol Nutr Metab. 36 (6), 976-984 (2011).</li><li>Millard, A. 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=Brief+Exercise+Increases+Peripheral+Blood+NK+Cell+Counts+without+Immediate+Functional+Changes,+but+Impairs+their+Responses+to+ex+vivo+Stimulation.">Brief Exercise Increases Peripheral Blood NK Cell Counts without Immediate Functional Changes, but Impairs their Responses to ex vivo Stimulation.</a> Front Immunol. 4, 125 (2013).</li><li>Janeway, C. 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Bu çalışmada tarif edilen yöntem ile doğrudan (bu özel durumda, uzun süreli egzersiz) uyaranlara yanıt olarak, bir bireyin NK hücrelerinin spesifik aktivitesini ölçer. Tipik haliyle, NK hücreleri belirteçlerin bir kombinasyonu kullanılarak sıralama yoğunluk gradyanları ya da hücre kullanılarak bir kanından izole edilmektedir. bunlar, zaman alıcı olan birden çok manipülasyonlar içerir ve ağır kullanım bağlıdır: Bu yöntemler yaygın olarak kullanılsa da, pek çok sakıncaları vardır. Bun...

Doğal öldürücü hücreler doğuştan gelen bağışıklık sisteminin önemli bir unsurdur. Çok düzenlenir olsa da, kabul ve hücre-hücre temas yoluyla önceki aktivasyonu 1 olmaksızın, anormal hücreleri ortadan kaldırmak için yeteneğine sahiptir. Bu nedenle, bu enfeksiyonlara karşı savunma hızlı bir çizgi oluşturur. Özellikle yoğun egzersiz, geçici bağışıklık sistemini 2, 3, 4, 5 bastırmak için gösterilmiştir. NK hücreleri etkili bir şekilde hastalığa karşı duyarlılığın arttırılmasına bir pencere oluşturma bu etki, 4, 6, 7 için özellikle müsaittir. Bu nedenle, müdahalelerin çalışma öncesinde, sırasında veya NK hücre fonksiyonu üzerindeki etkisini azaltma amacı ile yoğun egzersizden sonra sporcular sonrası yarışmalar refahı için özellikle ilginçtir. 8 seyrek 1); 2) NK hücreleri strese karşı çok hassastır ve deney sırasında canlı ve sabit kalması fizyolojik koşullar sürekli maruz güveniyor; ve 3) standart tahliller gibi Ficoll geçişlerini 9 olarak, NK hücre sitotoksisitesini belirlemek ve analizleri 10 serbest bırakmak için, güvenilmez ve tutarsız. İnsan örneklerin doğal değişkenliği sadece bu konuları bileşik. müdahaleler sırasında toplanan taze insan örnekleri, en azından bir hayvan örnekleri veya ölümsüzleştirilmiş hücre hatlarına kıyasla, temin oldukça düzenlenmiş ve zordur. Bu deneyler tekrarlamak ya da istatistiksel olarak anlamlı eşiklere ulaşması çalışma kohort katılımcı eklemek için fırsat azaltır. Topluca, bu sorunlar fo izin veren bir aerodinamik protokolü ihtiyacını destekR hem de yüksek verimlilik ve insan örnekleri NK hücre litik faaliyetinin yüksek güvenilirlik analizi. Biz, tespit yabancı etkenlere maruz kalmasını asgariye düşürür insan tam kandan izole ve test NK hücreleri için gerekli süreyi kısaltır bir iş akışı kurdu. azalırsa veya NK hücre sitotoksik artışların saptanmasına olanak tanınması için E oranı: Yöntem iki sensör, manyetik-bazlı hücre sıralayıcı ve sitometresi bir görüntüleme akışı ve bir deney özgü optimize edilmiş T kullanımı optimize eder.

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flow cytometric analysis of natural killer cell lytic activity in human whole blood

NK hücre sitotoksisite NK hücre fonksiyonu üzerindeki dış müdahale etkisini belirlemek için yaygın olarak kullanılan bir ölçüdür. Ancak, bu testin doğruluğunu ve tekrarlanabilirliği için kullanıcının hatalar nedeniyle ya da deneysel manipülasyon NK hücrelerinin duyarlılığının ya kararsız olarak kabul edilebilir. Bu sorunları ortadan kaldırmak için, en az bunları azaltan bir iş akışı kurulmuş ve sunulmuştur. Biz kaçak arasında, çeşitli zaman noktalarında kan örnekleri alındı, göstermek için (n = 4) egzersiz yoğun butik tabi ki. İlk olarak, NK hücreleri aynı anda tespit edilir ve doğrudan tam kandan ve gibi kısa bir sürede mililitre gelen CD56 etiketleme ve manyetik bazlı sıralama ile izole edilmiştir. kriteri NK hücreleri herhangi bir ayıraç veya kapatma antikorların kaldırılır. Bunlar kan mililitre başına doğru bir NK hücre sayısı tespit etmek için sayılabilir. İkinci olarak, kriteri NK hücrelerinin (efektör hücreleri ya da E) 3,3-Diotade karıştırılabilirHer olayın görselleştirme ve herhangi bir yanlış pozitif ortadan kaldırılması için izin veren bir görüntüleme akış Sitometreyi kullanarak E oranı ve analiz: 5 T: cyloxacarbocyanine perklorat (DIO) bir tahlil optimal 1 de K562 hücreleri (hedef hücreleri ya da T) etiketli ya da (örneğin çiftler veya efektör hücreleri gibi) yanlış negatif. Bu iş akışı yaklaşık 4 saat içinde tamamlandı ve hatta insan numuneleri ile çalışan çok kararlı sonuçlar sağlar edilebilir. Kullanılabilir olduğunda, araştırma ekipleri, insan deneklerde birkaç deneysel müdahaleleri test ve veri bütünlüğünü tehlikeye atmadan birkaç zaman noktaları arasında ölçümleri karşılaştırabilirsiniz.

NK hücre sayısı tayini Tam kan NK hücre sayımı ağır çalışan etkisi Şekil 2&#39;de tarif edilen egzersiz protokolü kullanılarak ölçülmüştür. Kan örnekleri ilk kan çekildikten sonra nihayet 24 ve 48 saat 1.5 saat egzersiz sonrası, egzersizden hemen sonra, egzersiz öncesi çekilmiş ve bulundu. Tam kan mililitrede NK hücrelerinin konsantrasyonu her koşucu (Şekil 3A) ve her bir zaman noktası için ortalama (Şekil 3...

Watch this Scientific Journal Video about Flow Cytometric Analysis of Natural Killer Cell Lytic Activity in Human Whole Blood at JoVE.com

Flow Cytometric Analysis of Natural Killer Cell Lytic Activity in Human Whole Blood

This work describes an advanced workflow for the accurate and fast determination of NK (Natural Killer) cell count and NK cell cytotoxicity in human blood samples.

İnsan Tüm Kan Natural Killer Hücre Parçalayıcı Faaliyet Akışı Sitometrik Analizi

NK cell cytotoxicity is a widely used measure to determine the effect of outside intervention on NK cell function. However, the accuracy and ...

The overall goal of this experiment is to determine NK cell count and cytotoxic activation levels in a human whole blood sample in a fast, reliable and stable manner. This method can help answer questions in the immunological fields, such as, What are the effects of outside interventions on the bioactivity of NK cells? The main advantage of this technique is that it is fast and accurate, While still providing reproducible results across experiments.To isolate NK cells from human whole blood, first place 15 milliliter tubes labeled Whole blood sample, Negative Fraction and Positive Fraction into the appropriate positions in the cell separator tube rack. When all of the tubes are loaded, insert the separator rack onto the mini-sampler for auto labeling, and select Reagent on the menu, to highlight the position where the vial will be placed on the rack. Select Read Reagent to activate the 2D code reader and hold the appropriate reagent vial in front of the 2D code reader at an angle 0.5 to 2.5 centimeters from the code reader cover.Place the read vial into the appropriate separator rack position. Next, under the Separation tab, highlight the desired positions. Then open the Labeling submenu and select an auto-labeling program.Assign the cell separation reagent microbeads to rack positions 1, 2, 3 and 4. And select the Posselwb separaton program. Select the Rinse Wash program.Enter 1500 microliters for the Sample Volume under the Volume sub menu, and press Enter. Then click Run to begin the cell separation. Clicking okay to confirm that enough buffer is available for processing all of the samples.To prepare a Cytotoxicity Assay sample, first, label 1.5 milliliter tubes for each sample and/or participant as appropriate, and pipe out the desired ratio of NK cells and DIO labeled K562 cells into each tube. Collect the cells by centrifugation, and carefully remove the supernatant without disturbing the cell pellet. Next, resuspend the cell mixture in 500 microliters of incomplete NK cell medium, and label the cells in each tube with 5 microliters of propidium iodide.Collect the cells via another centrifugation, and incubate the cull culture at 37 degrees celsius for two hours. At the end of the incubation, centrifuge the cells under the same centrifuge conditions, and resuspend the pellet in 25 microliters of fresh incomplete NK cell culture medium. To analyze the cells by Flow Cytometry, first, click the start up button in the imaging flow cytometer software to flush the system.Next, click on the scatterplot button to create four scatterplots, and load the double positive control tube. Using the double positive control sample, determine the desired intensity for the 405 milliwatt laser, so that the detector is not overloaded, and set the imager to acquire the appropriate number of cell counts. Setting the 405 milliwatt laser at an intensity that is suitable for the detection of both DIO and PI will require experience with both dyes and the detection range of the flow cytometer.After the acquisition of the double positive control sample finishes, load the DIO only control sample, select the 40X objective, and turn off the 642 milliwatt laser and the Brightfield channel. Breed the appropriate number of cells and repeat the acquisition for the propidium iodide only sample. When all of the control samples have been run, turn the 405 milliwatt laser and Brightfield channel, back on, and click Set Intensity.Then, under the File Acquisition tab, enter a custom file name, and select a folder for saving the data files. Next, enter the number of cells to acquire. Load the first experimental sample tube and click the Acquire button.When all of the samples have been run, open the imaging flow cytometer analysis software application, and open a single experimental RIF file. Under the compensation tab, select Create New Matrix. The software will prompt for the selection of the single color files, and merge them to create a matrix file to be selected for applying the channel compensation.Use the Building Blocks function to set up the appropriate dot plots. Then click on the statistics function to access the cell numbers in each gate. In this representative experiment, blood samples were drawn as indicated and the concentration of NK cells per milliliter of whole blood was measured for each runner, and on average for each time point.Three out of four runners presented a similar slight increase in NK cell count after exercise. Immediately followed by a sharp decrease, before slowly returning to normal, 24 to 48 hours after the end of the event. On average the NK cell count decreased 1.5 hours after exercise, but returned to near normal levels after 24 hours.After calculating the cell count, the cytotoxic activity of the NK cells was immediately analyzed as just demonstrated, with an average decrease in NK cell cytotoxicity immediately, and 1.5 hours after the termination of the exercise event, that increased significantly by 24 hours post exercise. The NK cytotoxicity remained high compared to the pre-exercise levels, albeit nonsignificantly. Once mastered, this technique can be completed in about four hours when performed properly.After watching this video, you should have a good understanding of how to obtain and characterize NK cells count and cytotoxic activity from human blood samples in a reproducible hydropic manner.

Research

JoVE Journal

Immunology and Infection

Super-resolution Imaging of the Natural Killer Cell Immunological Synapse on a Glass-supported Planar Lipid Bilayer

Bir Cam destekli Planar çift katlı lipid Doğal Öldürücü Hücre İmmünoloji Synapse Süper çözünürlüklü Görüntüleme

The glass-supported planar lipid bilayer system has been utilized in a variety of disciplines. One of the most useful applications of this technique has ...

İmmünoloji ve Enfeksiyon

Whole-animal Imaging and Flow Cytometric Techniques for Analysis of Antigen-specific CD8+ T Cell Responses after Nanoparticle Vaccination

Nanopartikül Aşılama sonrası analizi antijene özgü CD8 + T hücresi tepkileri için tüm hayvan Görüntüleme ve Akış Sitometrisi Teknikleri

Traditional vaccine adjuvants, such as alum, elicit suboptimal CD8+ T cell responses. To address this major challenge in vaccine development, various ...

Isolation and Flow Cytometric Analysis of Immune Cells from the Ischemic Mouse Brain

İskemik Fare Beyin gelen Bağışıklık Hücreleri İzolasyon ve Akım Sitometrisi Analizi

Ischemic stroke initiates a robust inflammatory response that starts in the intravascular compartment and involves rapid activation of brain resident ...

Isolation and Flow Cytometric Analysis of Glioma-infiltrating Peripheral Blood Mononuclear Cells

İzolasyon ve Glioma-sızmakta periferik kan mononükleer hücrelerinin Akışı Sitometrik Analizi

Our laboratory has recently demonstrated that natural killer (NK) cells are capable of eradicating orthotopically implanted mouse GL26 and rat CNS-1 ...

A Simple Flow Cytometric Method to Measure Glucose Uptake and Glucose Transporter Expression for Monocyte Subpopulations in Whole Blood

Basit Akım Sitometrisi Yöntemi Tüm Kan Monosit subpopulations için glikoz alımını ve Glikoz Transporter Anlatım Tedbir

Monocytes are innate immune cells that can be activated by pathogens and inflammation associated with certain chronic inflammatory diseases. Activation of ...

Flow Cytometric Analysis of Particle-bound Bet v 1 Allergen in PM10

PM10 parçacık bağlı Bet v 1 Allergen Akışı Sitometrik Analizi

Flow cytometry is a method widely used to quantify suspended solids such as cells or bacteria in a size range from 0.5 to several tens of micrometers in ...

Isolation and Flow Cytometric Analysis of Human Endocervical Gamma Delta T Cells

İnsan Endoservikal Gamma Delta T Hücreleri İzolasyon ve Akım Sitometrisi Analizi

The female reproductive tract (FRT) mucosal immune system serves as the first line of defense. Better knowledge of the genital mucosa is therefore ...

Dextran Enhances the Lentiviral Transduction Efficiency of Murine and Human Primary NK Cells

Dextran fare ve insan birincil NK hücreleri Lentiviral iletim verimliliğini artırır

The efficient transduction of specific genes into natural killer (NK) cells has been a major challenge. Successful transductions are critical to defining ...

Single-cell Analysis of Immunophenotype and Cytokine Production in Peripheral Whole Blood via Mass Cytometry

Tek hücreli Immunophenotype ve sitokin üretimde kitle sitometresi ile periferik tam kan analizi

Cytokines play a pivotal role in the pathogenesis of autoimmune diseases. Hence, the measurement of cytokine levels has been the focus of multiple studies ...

Characterization of Human Monocyte Subsets by Whole Blood Flow Cytometry Analysis

İnsan monosit alt kümeleri tam kan tarafından karakterizasyonu Akış Sitometresi Analizi

Monocytes are key contributors in various inflammatory disorders and alterations to these cells, including their subset proportions and functions, can ...