نود أن نشكر ريبيكا Paquett لإعداد MACS العازلة.

يرجى قراءة واتباع البروتوكول تدرج في عدة Miltenyi أو عبر الإنترنت في <a href="http://www.miltenyibiotec.com/">http://www.miltenyibiotec.com/</a> .

<ol>
	<li>Miller, M. J., Hejazi, A. S., Wei, S. H., Cahalan, M. D., Parker, I. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=T+cell+repertoire+scanning+is+promoted+by+dynamic+dendritic+cell+behavior+and+random+T+cell+motility+in+the+lymph+node.">T cell repertoire scanning is promoted by dynamic dendritic cell behavior and random T cell motility in the lymph node.</a> Proc Natl Acad Sci U S A. 101, 998-1003 (2004).</li><li>Matheu, M. P., Deane, J. A., Parker, I., Fruman, D. A., Cahalan, M. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Class+IA+phosphoinositide+3-kinase+modulates+basal+lymphocyte+motility+in+the+lymph+node.">Class IA phosphoinositide 3-kinase modulates basal lymphocyte motility in the lymph node.</a> J Immunol. 179, 2261-2269 (2007).</li></ol>

The authors have nothing to disclose.

عزل الخلايا من المصدر الأساسي هو خطوة ضرورية في العديد من البروتوكولات أكثر تعقيدا. Miltenyi تقدم مجموعات لعزل الخلايا من الكائنات الحية بما في ذلك العديد من البشر ، والرئيسات غير البشرية ، والجرذان ، كما وصفنا هنا الفئران. الفصل المغناطيسي خلية حبة المستندة يسمح لاختيار إما إيجاب?...

<table><tbody><tr><td>MACS Buffer</td><td>Reagent</td><td>None</td><td>None</td><td>Prepare as described by Miltenyi. </td></tr><tr><td>CD4+ T cell Isolation Kit: Untouched Isolation </td><td>Reagent</td><td>Miltenyi Biotec</td><td>130-090-860</td><td>For use with the Miltenyi system. </td></tr><tr><td>Sterile Phosphate-Buffered Saline (PBS)</td><td>Reagent</td><td></td><td></td><td>For use in the preparation of MACS buffer.</td></tr><tr><td>Corning 35mm Not TC-Treated Culture Dish</td><td>Other</td><td>Corning</td><td>430588</td><td>Used in the preparation of a single cell suspension.</td></tr><tr><td>70 micron Cell Strainer </td><td>Tool </td><td>BD Biosciences</td><td>352350</td><td>Used in the preparation of a single cell suspension.</td></tr><tr><td>6 mL Syringe </td><td>Tool</td><td>Tyco Healthcare, Covidien</td><td>8881516051</td><td>Used in the preparation of a single cell suspension.</td></tr><tr><td>10x Dulbecco&amp;rsquo;s Phosphate Buffered Saline (DPBS)</td><td>Reagent</td><td>Invitrogen</td><td>14200-075</td><td>For use in RBC lysis.</td></tr><tr><td>Sterile Water </td><td>Reagent </td><td>Sigma-Aldrich</td><td>W4502</td><td>For use in RBC lysis.</td></tr></tbody></table>

isolation of cd4+ t cells from mouse lymph nodes using miltenyi macs purification

عزل الخلايا من المصدر الأساسي هو خطوة ضرورية في العديد من البروتوكولات أكثر تعقيدا. Miltenyi تقدم مجموعات لعزل الخلايا من الكائنات الحية بما في ذلك العديد من البشر ، والرئيسات غير البشرية ، والجرذان ، كما وصفنا هنا الفئران. الفصل المغناطيسي خلية حبة المستندة يسمح لاختيار إما إيجابية (أو نضوب الخلية) ، وكذلك اختيار سلبية. هنا ، علينا أن نظهر التحديد السلبي للCD4 لقد يمسها أو غ + خلايا T المساعدة. باستخدام هذا البروتوكول القياسي نحن عادة تنقية الخلايا التي يتم CD4 ≥ النقي بنسبة 96 ٪ + / + CD3. ويستخدم هذا البروتوكول بالاقتران مع بروتوكول تشريح و 2 الفوتون التصوير من العقد الليمفاوية الطرفية في الفئران التي نشرت في العدد 7 من إن الرب ، لتنقية الخلايا T وغيرها من أنواع الخلايا لنقل adoptively لأغراض التصوير. على الرغم من أننا لم تثبت FACS التحليل في هذا الفيديو البروتوكول ، فإنه يوصى بشدة للتأكد من نقاء الشاملة للخلايا معزولة باستخدام الأجسام المضادة المناسبة عبر نظام مراقبة الأصول الميدانية. بالإضافة إلى ذلك ، علينا أن نظهر الأسلوب غير معقمة من العزلة الخلايا التائية. إذا كانت هناك حاجة الخلايا العقيمة للتطبيق نهاية مستخدم معين ، يجب التأكد من القيام بكل الإجراءات التي تجلت في نسيج الثقافة غطاء تحت ظروف معقمة القياسية. أشكركم على مشاهدة ونتمنى لك التوفيق في التجارب الخاصة بك!

Watch this Scientific Journal Video about Isolation of CD4+ T cells from Mouse Lymph Nodes Using Miltenyi MACS Purification at JoVE.com

Isolation of CD4+ T cells from Mouse Lymph Nodes Using Miltenyi MACS Purification

عزل الخلايا الليمفاوية باستخدام بالاعمال Miltenyi المجموعة هو وسيلة موثوق بها لتنقية الخلايا من الأنسجة اللمفاوية الخليط كله. تنقية الخلايا باستخدام نظام Miltenyi عادة ≥ 96 ٪ نقية. هنا ، ونحن لشرح الخطوات التي اتخذت لعزل خلايا CD4 + T ، واحدة من مجموعات كثيرة تقدمها Miltenyi.

عزل خلايا CD4 + T من الغدد الليمفاوية باستخدام الماوس Miltenyi MACS تنقية

Isolation of cells from the primary source is a necessary step in many more complex protocols. Miltenyi offers kits to isolate cells from several ...

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35.5K Views.  University of California, Irvine (UCI). عزل الخلايا الليمفاوية باستخدام بالاعمال Miltenyi المجموعة هو وسيلة موثوق بها لتنقية الخلايا من الأنسجة اللمفاوية الخليط كله. تنقية الخلايا باستخدام نظام Miltenyi عادة ≥ 96 ٪ نقية. هنا ، ونحن لشرح الخطوات التي اتخذت لعزل خلايا CD4 + T ، واحدة من مجموعات كثيرة تقدمها Miltenyi.

Video: Isolation of CD4+ T cells from Mouse Lymph Nodes Using Miltenyi MACS Purification

Isolation of Mouse Lung Dendritic Cells

Lung dendritic cells (DC) play a fundamental role in sensing invading pathogens 1,2 as well as in the control of tolerogenic responses 3 in the respiratory tract. At least three main subsets of lung dendritic cells have been described in mice: conventional DC (cDC) 4, plasmacytoid DC (pDC) 5 and the IFN-producing killer DC (IKDC) 6,7. The cDC subset is the most prominent DC subset in the lung 8. 
The common marker known to identify DC subsets is CD11c, a type I transmembrane integrin (&beta;2) that is also expressed on monocytes, macrophages, neutrophils and some B cells 9. In some tissues, using CD11c as a marker to identify mouse DC is valid, as in spleen, where most CD11c+ cells represent the cDC subset which expresses high levels of the major histocompatibility complex class II (MHC-II). However, the lung is a more heterogeneous tissue where beside DC subsets, there is a high percentage of a distinct cell population that expresses high levels of CD11c bout low levels of MHC-II. Based on its characterization and mostly on its expression of F4&#47;80, an splenic macrophage marker, the CD11chiMHC-IIlo lung cell population has been identified as pulmonary macrophages 10 and more recently, as a potential DC precursor 11. 
In contrast to mouse pDC, the study of the specific role of cDC in the pulmonary immune response has been limited due to the lack of a specific marker that could help in the isolation of these cells. Therefore, in this work, we describe a procedure to isolate highly purified mouse lung cDC. The isolation of pulmonary DC subsets represents a very useful tool to gain insights into the function of these cells in response to respiratory pathogens as well as environmental factors that can trigger the host immune response in the lung.

A highly purified preparation of mouse lung dendritic cells is described. Specific emphasis is given to the isolation of conventional dendritic cell subset.

عزل خلايا الرئة ماوس شجيرى

Lung dendritic cells (DC) play a fundamental role in sensing invading pathogens 1,2 as well as in the control of tolerogenic responses 3 in the ...

Immunology and Infection

Isolation and Th17 Differentiation of Na&iuml;ve CD4 T Lymphocytes

Th17 cells are a distinct subset of T cells that have been found to produce interleukin 17 (IL-17), and differ in function from the other T cell subsets including Th1, Th2, and regulatory T cells. Th17 cells have emerged as a central culprit in overzealous inflammatory immune responses associated with many autoimmune disorders. In this method we purify T lymphocytes from the spleen and lymph nodes of C57BL/6 mice, and stimulate purified CD4+ T cells under control and Th17-inducing environments. The Th17-inducing environment includes stimulation in the presence of anti-CD3 and anti-CD28 antibodies, IL-6, and TGF-&#946;. After incubation for at least 72 hours and for up to five days at 37 &#176;C, cells are subsequently analyzed for the capability to produce IL-17 through flow cytometry, qPCR, and ELISAs. Th17 differentiated CD4+CD25- T cells can be utilized to further elucidate the role that Th17 cells play in the onset and progression of autoimmunity and host defense. Moreover, Th17 differentiation of CD4+CD25- lymphocytes from distinct murine knockout/disease models can contribute to our understanding of cell fate plasticity.

Isolation and Th17 Differentiation of Na&#239;ve CD4 T Lymphocytes

With effector functions distinct from other T cell subsets, Th17 cells have been centrally implicated in inflammatory autoimmunity. This in vitro Th17 differentiation protocol provides a means to determine whether na&#239;ve CD4+ T lymphocytes can differentiate into Th17 cells, and to further examine their role in autoimmunity and host response.

العزلة والتمايز TH17 من السذاجة CD4 T الخلايا اللمفاوية

Th17 cells are a distinct subset of T cells that have been found to produce interleukin 17 (IL-17), and differ in function from the other T cell subsets ...

Isolation of Myeloid Dendritic Cells and Epithelial Cells from Human Thymus

In this protocol we provide a method to isolate dendritic cells (DC) and epithelial cells (TEC) from the human thymus. DC and TEC are the major antigen presenting cell (APC) types found in a normal thymus and it is well established that they play distinct roles during thymic selection. These cells are localized in distinct microenvironments in the thymus and each APC type makes up only a minor population of cells. To further understand the biology of these cell types, characterization of these cell populations is highly desirable but due to their low frequency, isolation of any of these cell types requires an efficient and reproducible procedure. This protocol details a method to obtain cells suitable for characterization of diverse cellular properties. Thymic tissue is mechanically disrupted and after different steps of enzymatic digestion, the resulting cell suspension is enriched using a Percoll density centrifugation step. For isolation of myeloid DC (CD11c+), cells from the low-density fraction (LDF) are immunoselected by magnetic cell sorting. Enrichment of TEC populations (mTEC, cTEC) is achieved by depletion of hematopoietic (CD45hi) cells from the low-density Percoll cell fraction allowing their subsequent isolation via fluorescence activated cell sorting (FACS) using specific cell markers. The isolated cells can be used for different downstream applications.

This protocol details a method to isolate antigen presenting cells from human thymus via different steps of enzymatic digestion of the tissue followed by density centrifugation of the single cell suspension and finally magnetic and/or FACS sorting of the cell populations of interest.

عزل الخلايا الجذعية متعلق بالنخاع الشوكي والخلايا الظهارية من الغدة الصعترية الإنسان

In this protocol we provide a method to isolate dendritic cells (DC) and epithelial cells (TEC) from the human thymus. DC and TEC are the major antigen ...

Mouse Na&#239;ve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Antigen inexperienced (na&#239;ve) CD4+ T cells undergo expansion and differentiation to effector subsets at the time of T cell receptor (TCR) recognition of cognate antigen presented on MHC class II. The cytokine signals present in the environment at the time of TCR activation are a major factor in determining the effector fate of a na&#239;ve CD4+ T cell. Although the cytokine environment during na&#239;ve T cell activation may be complex and involve both redundant and opposing signals in vivo, the addition of various cytokine combinations during naive CD4+ T cell activation in vitro can readily promote the establishment of effector T helper lineages with hallmark cytokine and transcription factor expression. Such differentiation experiments are commonly used as a first step for the evaluation of targets believed to promote or inhibit the development of certain CD4+ T helper subsets. The addition of mediators, such as signaling agonists, antagonists, or other cytokines, during the differentiation process can also be used to study the influence of a particular target on T cell differentiation. Here, we describe a basic protocol for the isolation of na&#239;ve T cells from mouse and the subsequent steps necessary for polarizing na&#239;ve cells to various T helper effector lineages in vitro.

Mouse Na&#239;ve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Na&#239;ve CD4+ T cells polarize to various subsets depending on the environment at the time of activation. The differentiation of na&#239;ve CD4+ T cells to various effector subsets can be achieved in vitro through the addition of T cell receptor stimuli and specific cytokine signals.

الماوس السذاجة CD4<sup&gt; +</sup&gt; عزل T خلية و<em&gt; في المختبر</em&gt; التمايز إلى T مجموعات فرعية خلية

Antigen inexperienced (na&#239;ve) CD4+ T cells undergo expansion and differentiation to effector subsets at the time of T cell receptor (TCR) recognition ...

An Efficient and High Yield Method for Isolation of Mouse Dendritic Cell Subsets

Dendritic cells (DCs) are professional antigen-presenting cells primarily responsible for acquiring, processing and presenting antigens on antigen presenting molecules to initiate T-cell-mediated immunity. Dendritic cells can be separated into several phenotypically and functionally heterogeneous subsets. Three important subsets of splenic dendritic cells are plasmacytoid, CD8&#945;Pos and CD8&#945;Neg cells. The plasmacytoid DCs are natural producers of type I interferon and are important for anti-viral T cell immunity. The CD8&#945;Neg DC subset is specialized for MHC class II antigen presentation and is centrally involved in priming CD4 T cells. The CD8&#945;Pos DCs are primarily responsible for cross-presentation of exogenous antigens and CD8 T cell priming. The CD8&#945;Pos DCs have been demonstrated to be most efficient at the presentation of glycolipid antigens by CD1d molecules to a specialized T cell population known as invariant natural killer T (iNKT) cells. Administration of Flt-3 ligand increases the frequency of migration of dendritic cell progenitors from bone marrow, ultimately resulting in expansion of dendritic cells in peripheral lymphoid organs in murine models. We have adapted this model to purify large numbers of functional dendritic cells for use in cell transfer experiments to compare in vivo proficiency of different DC subsets.

Distinct dendritic cell subsets exist as rare populations in lymphoid organs, and therefore are challenging to isolate in sufficient numbers and purity for immunological experiments. Here we describe a high efficiency, high yield method for isolation of all of the currently known major subsets of mouse splenic dendritic cells.

على طريقة العائد فعالة وعالية لعزل مجموعات فرعية خلية الفأر الجذعية

Dendritic cells (DCs) are professional antigen-presenting cells primarily responsible for acquiring, processing and presenting antigens on antigen ...

Isolation and Activation of Murine Lymphocytes

B and T cells, with their extremely diverse antigen-receptor repertoires, have the ability to mount specific immune responses against almost any invading pathogen1,2. Understandably, such intricate abilities are controlled by a large number of molecules involved in various cellular processes to ensure timely and spatially regulated immune responses3. Here, we describe experimental procedures that allow rapid isolation of highly purified murine lymphocytes using magnetic cell sorting technology. The resulting purified lymphocytes can then be subjected to various in vitro or in vivo functional assays, such as the determination of lymphocyte signaling capacity upon stimulation by immunoblotting4 and the investigation of proliferative abilities by 3H-thymidine incorporation or carboxyfluorescein diacetate succinimidyl ester (CFSE) labeling5-7. In addition to comparing the functional capacities of control and genetically modified lymphocytes, we can also determine the T cell stimulatory capacity of antigen-presenting cells (APCs) in vivo, as shown in our representative results using transplanted CFSE-labeled OT-I T cells.

Lymphocytes are the major players in adaptive immune responses. Here, we present a lymphocyte purification protocol to determine the physiological functions of the desired molecules in lymphocyte activation in vitro and in vivo. The described experimental procedures are suitable for comparing functional capacities between control and genetically modified lymphocytes.

العزلة وتنشيط الخلايا الليمفاوية الفئران

B and T cells, with their extremely diverse antigen-receptor repertoires, have the ability to mount specific immune responses against almost any invading ...

Isolating Lymphocytes from the Mouse Small Intestinal Immune System

The intestinal immune system plays an essential role in maintaining the barrier function of the gastrointestinal tract by generating tolerant responses to dietary antigens and commensal bacteria while mounting effective immune responses to enteropathogenic microbes. In addition, it has become clear that local intestinal immunity has a profound impact on distant and systemic immunity. Therefore, it is important to study how an intestinal immune response is induced and what the immunologic outcome of the response is. Here, a detailed protocol is described for the isolation of lymphocytes from small intestine inductive sites like the gut-associated lymphoid tissue Peyer&#39;s patches and the draining mesenteric lymph nodes and effector sites like the lamina propria and the intestinal epithelium. This technique ensures isolation of a large numbers of lymphocytes from small intestinal tissues with optimal purity and viability and minimal cross compartmental contamination within acceptable time constraints. The technical capability to isolate lymphocytes and other immune cells from intestinal tissues enables the understanding of immune responses to gastrointestinal infections, cancers, and inflammatory diseases.

Here we describe a detailed protocol for the isolation of lymphocytes from the inductive sites including the gut-associated lymphoid tissue Peyer&#39;s patches and the draining mesenteric lymph nodes, and the effector sites including the lamina propria and the intestinal epithelium of the small intestinal immune system.

عزل الخلايا الليمفاوية من الماوس صغيرة المعوية المناعي

The intestinal immune system plays an essential role in maintaining the barrier function of the gastrointestinal tract by generating tolerant responses to ...

Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells

Excess dietary salt intake contributes to inflammation and plays a vital role in the development of hypertension. We previously found that antigen-presenting dendritic cells (DCs) can sense elevated extracellular sodium leading to the activation of the NADPH oxidase and formation of isolevuglandin (IsoLG)-protein adducts. These IsoLG-protein adducts react with self-proteins and promote an autoimmune-like state and hypertension. We have developed and optimized state-of-the-art methods to study DC function in hypertension. Here, we provide a detailed protocol for isolation, in vitro treatment with elevated sodium, and adoptive transfer of murine splenic CD11c+ cells into recipient mice to study their role in hypertension.

Here, we present a protocol to isolate dendritic cells from murine spleens by magnetic cell sorting and subsequent adoptive transfer into na&#239;ve mice. The model of high-salt activated dendritic cells was chosen to explain the step-by-step procedures of adoptive transfer and flow cytometry.

العزلة والتبني نقل الملح عالية يعامل عرض مستضد الخلايا الجذعية

Excess dietary salt intake contributes to inflammation and plays a vital role in the development of hypertension. We previously found that ...

Magnetic Activated Cell Sorting (MACS): Isolation of Thymic T Lymphocytes

Source: Meunier Sylvain1,2,3, Perchet Thibaut1,2,3, Sophie Novault4, Rachel Golub1,2,3 
1 Unit for Lymphopoiesis, Department of Immunology, Pasteur Institute, Paris, France 
2 INSERM U1223, Paris, France 
3 Universit&#233; Paris Diderot, Sorbonne Paris Cit&#233;, Cellule Pasteur, Paris, France 
4 Flow Cytometry Platfrom, Cytometry and Biomarkers UtechS, Center for Translational Science, Pasteur Institute, Paris, France
Defence against pathogens depends on surveillance by the immune system. This system is complex and comprises many cell types, each one with specific functions. This complex composition enables immune responses to a large diversity of pathogens and injuries. Adaptive immunity allows specific responses against specific pathogens. The majority of cells responsible for this type of immunity are the lymphocytes (B cells and T cells). Usually, B cells respond to extracellular infections (such as bacterial infections), and T cells respond to intracellular infections (such as viral infections). The different types of cells in lymphocyte populations can be characterized by the combination of cell surface proteins they express and/or by a panel of secreted cytokines.
Magnetic sorting allows enrichment of targeted cell populations using magnetic properties and expression of one or several cell surface proteins (1, 2). This technique consists of three steps. First, the cells are incubated with magnetic beads that are coupled with one or several monoclonal-specific antibodies. Cells that express surface proteins that bind to these antibodies attach to the magnetic beads. Then, the targeted cell populations are captured with a magnet. To finish, the targeted cells are eluted from the magnet. At the end, two sorting products are obtained, one containing unlabeled cells and the second containing the target cells coupled with the magnetic beads. Columns can be used to improve the efficiency of magnetic sorting. In the column, a non-magnetic element lengthens the path of cell through the column. Hence, cell flow is slowed down, facilitating cell capture by the magnet.
<img alt="Figure 1" class="xfigimg" src="/files/ftp_upload/10495/10495fig1.jpg" /> 
Figure 1: Schematic representation of magnetic separation. Thymic leukocytes are stained with anti-CD3 biotinylated antibodies. After washing, streptavidin (SAV) coupled beads specifically fix the biotin on anti-CD3 antibodies. (1) Cells are transferred in a column. (2) The magnet does not retain unlabeled cells, while CD3-positive cells remain in the column. Finally, the column is separated from the magnet and (3) CD3-positive cells are eluted in medium. <a href="https://jove.unicartagenaproxy.elogim.com/files/ftp_upload/10495/10495fig1large.jpg" target="_blank">Please click here to view a larger version of this figure.</a>
There are two types of magnetic sorting (3). In positive sorting, cells of interest are captured with the magnetic beads. In negative sorting, unwanted cells are removed by capturing with the magnetic beads carrying the appropriate antibodies. This MACS technique permits good enrichment of targeted cells and improves the percentage of recovered cells from 1-20% to 60-98% in an organ. After sorting, it is necessary to verify cell purity and sorting by different methods (e.g. flow cytometry). The MACS technique is ideal to enrich a target population for other experiments such as cell culture or cell cycle analysis.
In this lab exercise, we demonstrate how to isolate thymic leukocytes and thereafter enrich thymic CD3-positive cells from the mix using magnetic cell sorting technique.

MACS: Isolation of Thymic T Lymphocytes

Source: Meunier Sylvain1,2,3, Perchet Thibaut1,2,3, Sophie Novault4, Rachel Golub1,2,3
1 Unit for Lymphopoiesis, Department of Immunology, Pasteur ...

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T-Cell Enrichment: A Technique to Isolate T-Cells from Mixed Cell Population by Magnetic Separation

Source: Nguyen, H. D., et al. <a href="https://jove.unicartagenaproxy.elogim.com/t/60083">Bone Marrow Transplantation Platform to Investigate the Role of Dendritic Cells in Graft-versus-Host Disease.</a> J. Vis. Exp. (2020).
This video describes T-cells enrichment from the spleen of a mouse by negative selection using a magnetic separator. The technique involves targeting the other cells in the sample for depletion using antibodies or ligands directed against specific cell surface antigens.

تخصيب الخلايا التائية: تقنية لعزل الخلايا التائية من الخلايا المختلطة عن طريق الفصل المغناطيسي

Source: Nguyen, H. D., et al. Bone Marrow Transplantation Platform to Investigate the Role of Dendritic Cells in Graft-versus-Host Disease. J. Vis. Exp. ...