Name: differentiating functional roles of gene expression from immune and non-immune cells in mouse colitis by bone marrow transplantation
Uploaded: 2012-10-01T12:00:00
Description: Watch this Scientific Journal Video about Differentiating Functional Roles of Gene Expression from Immune and Non-immune Cells in Mouse Colitis by Bone Marrow Transplantation at JoVE.com

이 작품은 UCLA-치료 센터, Crohn의 및 미국 경력 개발 상 (# 2691)와 건강 NIDDK K01 국립 연구소 (DK084256) 혼 와이 쿤에 대한 자금의 대장염 재단의 파일럿 및 타당성 연구 기금의 지원을받는되었다. 골수 방사선 작업 버나드 레빈과 AIDS 연구 마우스 / 인간 키메라의 핵심 시설에 대한 UCLA 센터의 스콧 주방이 도움이되었습니다. 유동 세포 계측법 작업은 UCLA 벡터 핵심 시설의 지원을했습니다.

1. 전에 - 당신 - 시작 기술 고려 사항 <ol><li> 해당 CD 분자와 마우스가 주요 마우스 공급 업체에서 구입 할 수 있기 때문 우리는 실험을 위해 C57/BL6 야생 형 마우스 및 녹아웃 마우스를 모두 사용하는 것이 좋습니다. </li><li> 이 야생 타입 마우스와 골수 이식 후 기증자의 세포를 파생 녹아웃 마우스를 추적하기가 어렵습니다 때문에, 야생 형 생쥐를 표현하기 위해 CD45.1 마우스를 사용 할 필요가 있?...

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Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=marrow+cells+in+murine+colitis:+multi-signal+analysis+confirms+pericryptal+myofibroblast+engraftment+without+epithelial+involvement.">marrow cells in murine colitis: multi-signal analysis confirms pericryptal myofibroblast engraftment without epithelial involvement.</a> PLoS One. 6, e11 (2011).</li><li>Deng, X. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=New+cell+therapy+using+bone+marrow-derived+stem+cells/endothelial+progenitor+cells+to+accelerate+neovascularization+in+healing+of+experimental+ulcerative+colitis.">New cell therapy using bone marrow-derived stem cells/endothelial progenitor cells to accelerate neovascularization in healing of experimental ulcerative colitis.</a> Curr. Pharm. Des. 17, 1643-1651 (2011).</li><li>Valcz, G. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lymphoid+aggregates+may+contribute+to+the+migration+and+epithelial+commitment+of+bone+marrow-derived+cells+in+colonic+mucosa.">Lymphoid aggregates may contribute to the migration and epithelial commitment of bone marrow-derived cells in colonic mucosa.</a> J. Clin. Pathol. 64, 771-775 (2011).</li><li>Takaba, J., Mishima, Y., Hatake, K., Kasahara, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Role+of+bone+marrow-derived+monocytes/macrophages+in+the+repair+of+mucosal+damage+caused+by+irradiation+and/or+anticancer+drugs+in+colitis+model.">Role of bone marrow-derived monocytes/macrophages in the repair of mucosal damage caused by irradiation and/or anticancer drugs in colitis model.</a> Mediators Inflamm. 2010, 634145 (2010).</li><li>Bakhautdin, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protective+role+of+macrophage-derived+ceruloplasmin+in+inflammatory+bowel+disease.+.">Protective role of macrophage-derived ceruloplasmin in inflammatory bowel disease. .</a> Gut. , (2012).</li><li>Seta, N., Kuwana, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Derivation+of+multipotent+progenitors+from+human+circulating+CD14++monocytes.">Derivation of multipotent progenitors from human circulating CD14+ monocytes.</a> Exp. Hematol. 38, 557-563 (2010).</li><li>Crain, B. J., Tran, S. D., Mezey, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transplanted+human+bone+marrow+cells+generate+new+brain+cells.">Transplanted human bone marrow cells generate new brain cells.</a> J. Neurol. Sci. 233, 121-123 (2005).</li><li>Finnberg, N. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High-resolution+imaging+and+antitumor+effects+of+GFP(+)+bone+marrow-derived+cells+homing+to+syngeneic+mouse+colon+tumors.">High-resolution imaging and antitumor effects of GFP(+) bone marrow-derived cells homing to syngeneic mouse colon tumors.</a> Am. J. Pathol. 179, 2169-2176 (2011).</li><li>Duran-Struuck, R., Dysko, R. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Principles+of+bone+marrow+transplantation+(BMT):+providing+optimal+veterinary+and+husbandry+care+to+irradiated+mice+in+BMT+studies.">Principles of bone marrow transplantation (BMT): providing optimal veterinary and husbandry care to irradiated mice in BMT studies.</a> J. Am. Assoc. Lab Anim. Sci. 48, 11-22 (2009).</li><li>Chen, B. J., Cui, X., Sempowski, G. D., Domen, J., Chao, N. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Hematopoietic+stem+cell+dose+correlates+with+the+speed+of+immune+reconstitution+after+stem+cell+transplantation.">Hematopoietic stem cell dose correlates with the speed of immune reconstitution after stem cell transplantation.</a> Blood. 103, 4344-4352 (2004).</li></ol>

이 골수 이식 접근 방식은 면역학의 대장염의 연구, 감염, 암, 비만 및 기타 질병에 적합합니다. 이 골수 이식 실험은 유전자 수준의 관심은 모두 파생 골수와 비 골수 파생 세포와 유전자 수준의 관심이 어느 인구의 세포에 의해 병을 중재 것으로 의심되는 표현 할 때 필요합니다. 예를 들어, 항균 펩타이드 cathelicidin은 급성 대장염을 조절하기 위해 표시됩니다. 그러나 그것은 상피 세포와 면역 세...

<table border="1"><tbody><tr><td> 시약의 이름 </td><td> 회사 </td><td> 카탈로그 번호 </td></tr><tr><td> 세포 염색 버퍼 </td><td> Biolegend </td><td> # 420201 </td></tr><tr><td> 10X 적혈구 용해 버퍼 </td><td> Biolegend </td><td> # 420301 </td></tr><tr><td> FITC 마우스 isotype 제어 </td><td> Biolegend </td><td> # 400207 </td></tr><tr><td> PE 마우스 isotype 제어 </td><td> Biolegend </td><td> # 400211 </td></tr><tr><td> PE 안티 - 마우스 CD45.2 </td><td> Biolegend </td><td> # 109807 </td></tr><tr><td> FITC 안티 - 마우스 CD45.1 </td><td> Biolegend </td><td> # 110705 </td></tr><tr><td> 안티 - 마우스 CD16/32 차단 </td><td> Biolegend </td><td> # 101301 </td></tr><tr><td> 40 μm 셀 스트레이너 </td><td> Fisherbrand </td><td> # 22363547 </td></tr><tr><td> PBS 1X </td><tD&gt; MP의 biomedicals </td><td> # 1860454 </td></tr><tr><td> 헤파린 </td><td> Fisherbrand </td><td> # BP2425 </td></tr><tr><td> Sulfatrim (SMZ) </td><td> Qualitest </td><td> NC9242720 (어부) </td></tr><tr><td> 소독약 IC </td><td> Andwin 과학 </td><td> NC9745686 (어부) </td></tr><tr><td> Vaccutainer </td><td> BD </td><td> # 8000813 </td></tr><tr><td> 마우스 restrainer </td><td> Braintree 과학 </td><td> # TV-150 </td></tr><tr><td> Irradiator </td><td> JL 목자 사 </td><td> 제가 68A 표시 </td></tr><tr><td> 흐름 cytometer </td><td> BD </td><td> BD FACSCanto II </td></tr><tr><td> 흐름 cytometer 테스트 튜브 </td><td> 매 </td><td> # 352052 </td></tr><tr><td> 디지털 캘리퍼스 </td><td> Fisherbrand </td><td> 14-648-17 </td></tr><tr><td> Hemoccult ICT </td><td> Beckman 보습 바로 앞에 달린 풀 베는 날 </td><td> G0328QW </td></tR&gt; </tbody></table>

differentiating functional roles of gene expression from immune and non-immune cells in mouse colitis by bone marrow transplantation

대장염의 개발에 유전자의 역할을 이해하기 위해, 우리는 야생 타입 마우스 및 대장염에 대한 유전자 수준의 관심 결함 녹아웃 마우스의 반응을 비교했다. 유전자 수준의 관심은 골수 파생 세포와 호스트의 비 골수 유래 세포 모두에 표시되어있는 경우, 그러나, 골수 유래 세포 및 비 골수의 관심 유전자의 역할을 차별화 할 수 있습니다 골수 이식 기술에 의해 파생 된 세포. 마우스의 골수 유래 세포 유전자형을 변경하려면받는 마우스의 원래 골수는 방사선에 의해 파괴하고 다른 유전자형의 새로운 기증 골수로 대체되었습니다. 야생 형 쥐 기증 골수가 녹아웃 마우스에 이식되었을 때, 우리는 골수 유래 세포의 야생 형 유전자 발현과 녹아웃 마우스를 생성 수 있습니다. 또한,시 녹아웃 마우스 기증 골수는 유전자 수준의 관심을 표현하지 않고 야생 타입받는 마우스, 야생 형 생쥐에 이식 된골수에서 파생 된 세포가 생산되었다. 그러나, 골수 이식이 100 % 완료되지 않을 수 있습니다. 따라서, 우리는받는 마우스 및 골수 이식의 성공에 기증 골수 유래 세포의 비율을 추적하기 위해 기증자와받는 사람 세포의 마커로 차별화 (CD) 분자의 클러스터를 (CD45.1 및 CD45.2) 이용. CD45.2 유전자형과 CD45.1 유전자형과 녹아웃 쥐 야생 형 생쥐가 사용되었습니다. 받는 마우스 조사 후, 다른 genotypes의 기증 골수 세포가받는 마우스에 주입했다. 새로운 골수는 면역을 물려 생성하면, 생쥐는 대장염을 유발하는 화학 물질 에이전트 (dextran 나트륨 황산, DSS 5 %)에 의해 도전되었다. 여기 우리는 또한 마우스로 대장염을 유발하고 뼈 골수 유래 세포에서 표현의 관심 유전자의 역할을 평가하는 방법을 보여 주었다. 뼈 파생 된 세포에서 유전자 수준의 관심은 질병의 발전에 중요한 역할을 (예 : 대장균과 같은 재생되면살은), 골수 이식과 함께받는 생쥐의 표현형이 크게 변경 될 수 있습니다. 대장염 실험의 끝에서, 골수 혈액과 골수의 세포 CD45.1 및 CD45.2에 대한 항체와 라벨이 붙지 만, 존재의의 양적 비율은 유동 세포 계측법에 의한 골수 이식의 성공 여부를 평가하는 데 사용할 수 파생. 성공적인 골수 이식받는 사람 마우스의 골수와 혈액 모두에서받는 사람 유전자형 이상 기증 유전자형 (CD 분자 마커의 기간에)의 대부분을 표시합니다.

유전자 수준의 관심이 대장염의 개발 기간 동안 면역 세포에서 중요한 역할을 담당하는 경우, 쥐가 골수 이식 (WT KO 또는 WT에 KO로)를 통해 서로 다른 유전자형의 골수를받는 것은 DSS 대장염에 변경된 응답이 있어야합니다. 대장염의 심각도를 결정하기위한 가장 중요한 매개 변수 중 하나는 colonic 조직의 H &amp; E 염색입니다. Colonic 조직 구조 변화와 염증의 징후는 양적 H &amp; E 조직학 점수 시스템?...

Watch this Scientific Journal Video about Differentiating Functional Roles of Gene Expression from Immune and Non-immune Cells in Mouse Colitis by Bone Marrow Transplantation at JoVE.com

Differentiating Functional Roles of Gene Expression from Immune and Non-immune Cells in Mouse Colitis by Bone Marrow Transplantation

골수 이식은 골수 유래 세포의 유전자형을 변경하는 방법을 제공합니다. 관심 유전자는 골수 유래 세포 및 비 골수 유래 세포 모두에 표현되어있는 경우, 골수 이식이 아닌 골수 유래 세포 유전자형을 변경하지 않고 다른 유전자형에 골수 유래 세포를 변경할 수 있습니다.

골수 이식으로 마우스 대장염에서 면역 및 비 면역 세포에서 유전자 발현의 기능 역할을 차별화

To understand the role of a gene in the development of colitis, we compared the responses of wild-type mice and gene-of-interest deficient knockout mice ...

differentiating-functional-roles-gene-expression-from-immune-non

Research

JoVE Journal

Immunology and Infection

Measuring Calpain Activity in Fixed and Living Cells by Flow Cytometry

Calpains are ubiquitous intracellular, calcium-sensitive, neutral cysteine proteases 1. Calpains play crucial roles in many physiological processes, including signaling, cytoskeletal remodeling, regulation of gene expression, apoptosis and cell cycle progression 1. Calpains have been implicated in many pathologies including muscular dystrophies, cancer, diabetes, Alzheimer's disease and multiple sclerosis 1. Calpain regulation is complex and incompletely understood. mRNA and protein levels correlate poorly with activity, limiting the use of gene or protein expression techniques to measure calpain activity. This video protocol details a flow cytometric assay developed in our laboratory for measuring calpain activity in fixed and living cells. This method uses the fluorescent substrate BOC-LM-CMAC, which is cleaved specifically by calpain, to measure calpain activity. 2 In this video, calpain activity in fixed and living murine 32Dkit leukemia cells, alone or as part of a splenocyte population is measured using an LSRII (BD Bioscience). 32Dkit cells are shown to have elevated activity compared to normal splenocytes.

This article will detail the protocol for measuring calpain activity in fixed and living cells using flow cytometry.

유동세포계측법로 고정하고 살아있는 세포에서 Calpain 활동을 측정

Calpains are ubiquitous intracellular, calcium-sensitive, neutral cysteine proteases 1. Calpains play crucial roles in many physiological processes, ...

연구

면역학 및 감염병학

Isolation of Functional Cardiac Immune Cells

Cardiac immune cells are gaining interest for the roles they play in the pathological remodeling in many cardiac diseases.1-5 These immune cells, which include mast cells, T-cells and macrophages; store and release a variety of biologically active mediators including cytokines and proteases such as tryptase.6-8 These mediators have been shown to be key players in extracellular matrix metabolism by activating matrix metalloproteinases or causing collagen accumulation by modulating the cardiac fibroblasts' function.9-11 However, available techniques for isolating cardiac immune cells have been problematic because they use bacterial collagenase to digest the myocardial tissue. This technique causes activation of the immune cells and thus a loss of function. For example, cardiac mast cells become significantly less responsive to compounds that cause degranulation.12 Therefore, we developed a technique that allows for the isolation of functional cardiac immune cells which would lead to a better understanding of the role of these cells in cardiac disease.13, 14
This method requires a familiarity with the anatomical location of the rat's xiphoid process, axilla and falciform ligament, and pericardium of the heart. These landmarks are important to increase success of the procedure and to ensure a higher yield of cardiac immune cells. These isolated cardiac immune cells can then be used for characterization of functionality, phenotype, maturity, and co-culture experiments with other cardiac cells to gain a better understanding of their interactions.

This method for isolating functional immune cells from the heart provides an alternative to the conventional methods of collagenase digestion, which causes unwanted immune cell activation, resulting in a decreased responsiveness of these cells. Our method of isolation yields functional cardiac immune cells by avoiding problems associated with enzymatic digestion.

심장 기능 면역 세포의 분리

Cardiac immune cells are gaining interest for the roles they play in the pathological remodeling in many cardiac diseases.1-5  These immune cells, which ...

Isolation, Purification and Labeling of Mouse Bone Marrow Neutrophils for Functional Studies and Adoptive Transfer Experiments

Neutrophils are critical effector cells of the innate immune system. They are rapidly recruited at sites of acute inflammation and exert protective or pathogenic effects depending on the inflammatory milieu. Nonetheless, despite the indispensable role of neutrophils in immunity, detailed understanding of the molecular factors that mediate neutrophils' effector and immunopathogenic effects in different infectious diseases and inflammatory conditions is still lacking, partly because of their short half life, the difficulties with handling of these cells and the lack of reliable experimental protocols for obtaining sufficient numbers of neutrophils for downstream functional studies and adoptive transfer experiments. Therefore, simple, fast, economical and reliable methods are highly desirable for harvesting sufficient numbers of mouse neutrophils for assessing functions such as phagocytosis, killing, cytokine production, degranulation and trafficking. To that end, we present a reproducible density gradient centrifugation-based protocol, which can be adapted in any laboratory to isolate large numbers of neutrophils from the bone marrow of mice with high purity and viability. Moreover, we present a simple protocol that uses CellTracker dyes to label the isolated neutrophils, which can then be adoptively transferred into recipient mice and tracked in several tissues for at least 4 hr post-transfer using flow cytometry. Using this approach, differential labeling of neutrophils from wild-type and gene-deficient mice with different CellTracker dyes can be successfully employed to perform competitive repopulation studies for evaluating the direct role of specific genes in trafficking of neutrophils from the blood into target tissues in vivo.

We describe a protocol for isolation and purification of neutrophils from mouse bone marrow by density gradient centrifugation and for neutrophil labeling using CellTracker dyes. This represents a simple, fast, reproducible and economical method for obtaining large numbers of neutrophils for downstream functional studies or adoptive transfer and tracking experiments.

분리, 정제 및 기능 연구 및 입양 전송 실험 쥐의 골수 호중구의 라벨링

Neutrophils are critical effector cells of the innate immune system. They are rapidly recruited at sites of acute inflammation and exert protective or ...

Tracking Mouse Bone Marrow Monocytes In Vivo

Real time multiphoton imaging provides a great opportunity to study cell trafficking and cell-to-cell interactions in their physiological 3-dimensionnal environment. Biological activities of immune cells mainly rely on their motility capacities. Blood monocytes have short half-life in the bloodstream; they originate in the bone marrow and are constitutively released from it. In inflammatory condition, this process is enhanced, leading to blood monocytosis and subsequent infiltration of the peripheral inflammatory tissues. Identifying the biomechanical events controlling monocyte trafficking from the bone marrow towards the vascular network is an important step to understand monocyte physiopathological relevance. We performed in vivo time-lapse imaging by two-photon microscopy of the skull bone marrow of the Csf1r-Gal4VP16/UAS-ECFP (MacBlue) mouse. The MacBlue mouse expresses the fluorescent reporters enhanced cyan fluorescent protein (ECFP) under the control of a myeloid specific promoter 1, in combination with vascular network labelling. We describe how this approach enables the tracking of individual medullar monocytes in real time to further quantify the migratory behaviour within the bone marrow parenchyma and the vasculature, as well as cell-to-cell interactions. This approach provides novel insights into the biology of the bone marrow monocyte subsets and allows to further address how these cells can be influenced in specific pathological conditions.

Tracking Mouse Bone Marrow Monocytes In Vivo

Monocytes are key regulators of innate immunity and play a critical role in the renewal of the peripheral mononuclear phagocytic system and in case of inflammation. This manuscript describes the procedure of real time imaging of the mouse calvaria bone marrow to study the monocyte mobilisation mechanism.

마우스 골수 단핵구를 추적<em&gt; 생체</em

Real time multiphoton imaging provides a great opportunity to study cell trafficking and cell-to-cell interactions in their physiological 3-dimensionnal ...

Generation and Identification of GM-CSF Derived Alveolar-like Macrophages and Dendritic Cells From Mouse Bone Marrow

Macrophages and dendritic cells (DCs) are innate immune cells found in tissues and lymphoid organs that play a key role in the defense against pathogens. However, they are difficult to isolate in sufficient numbers to study them in detail, therefore, in vitro models have been developed. In vitro cultures of bone marrow-derived macrophages and dendritic cells are well-established and valuable methods for immunological studies. Here, a method for culturing and identifying both DCs and macrophages from a single culture of primary mouse bone marrow cells using the cytokine granulocyte macrophage colony-stimulating factor (GM-CSF) is described. This protocol is based on the established procedure first developed by Lutz et al. in 1999 for bone marrow-derived DCs. The culture is heterogeneous, and MHCII and fluoresceinated hyaluronan (FL-HA) are used to distinguish macrophages from immature and mature DCs. These GM-CSF derived macrophages provide a convenient source of in vitro derived macrophages that closely resemble alveolar macrophages in both phenotype and function.

Bone marrow cells cultured with granulocyte macrophage colony stimulating factor (GM-CSF) generate a heterogeneous culture containing macrophages and dendritic cells (DCs). This method highlights using MHCII and hyaluronan (HA) binding to differentiate macrophages from the DCs in the GM-CSF culture. Macrophages in this culture have many similarities to alveolar macrophages.

마우스 골수에서 생성 및 GM-CSF의 식별 파생 폐포와 같은 대 식세포와 수지상 세포

Macrophages and dendritic cells (DCs) are innate immune cells found in tissues and lymphoid organs that play a key role in the defense against pathogens. ...

Fluorescence-activated Cell Sorting for Purification of Plasmacytoid Dendritic Cells from the Mouse Bone Marrow

Fluorescence-activated cell sorting (FACS) is a technique to purify specific cell populations based on phenotypes detected by flow cytometry. This method enables researchers to better understand the characteristics of a single cell population without the influence of other cells. Compared to other methods of cell enrichment, such as magnetic-activated cell sorting (MCS), FACS is more flexible and accurate for cell separation due to the ability of phenotype detection by flow cytometry. In addition, FACS is usually capable of separating multiple cell populations simultaneously, which improves the efficiency and diversity of experiments. Although FACS has some limitations, it has been broadly used to purify cells for functional studies in both in vitro and in vivo settings. Here we report a protocol using fluorescence-activated cell sorting to isolate a very rare population of immune cells, plasmacytoid dendritic cells (pDC), with high purity from the bone marrow of lupus-prone mice for in vitro functional studies of pDC.

We report a protocol using fluorescence-activated cell sorting to isolate plasmacytoid dendritic cells (pDC) with high purity from the bone marrow of lupus-prone mice for functional studies of pDC.

마우스 골수에서 형질 수지상 세포의 정화를위한 형광 활성화 셀 정렬

Fluorescence-activated cell sorting (FACS) is a technique to purify specific cell populations based on phenotypes detected by flow cytometry. This method ...

Identification and Isolation of Oligopotent and Lineage-committed Myeloid Progenitors from Mouse Bone Marrow

Myeloid progenitors that yield neutrophils, monocytes and dendritic cells (DCs) can be identified in and isolated from the bone marrow of mice for hematological and immunological analyses. For example, studies of the cellular and molecular properties of myeloid progenitor populations can reveal mechanisms underlying leukemic transformation, or demonstrate how the immune system responds to pathogen exposure. Previously described flow cytometry strategies for myeloid progenitor identification have enabled significant advances in many fields, but the fractions they identify are very heterogeneous. The most commonly used gating strategies define bone marrow fractions that are enriched for the desired populations, but also contain large numbers of &#34;contaminating&#34; progenitors. Our recent studies have resolved much of this heterogeneity, and the protocol we present here permits the isolation of 6 subpopulations of oligopotent and lineage-committed myeloid progenitors from 2 previously described bone marrow fractions. The protocol describes 3 stages: 1) isolation of bone marrow cells, 2) enrichment for hematopoietic progenitors by magnetic-activated cell sorting (lineage depletion by MACS), and 3) identification of myeloid progenitor subsets by flow cytometry (including fluorescence-activated cell sorting, FACS, if desired). This approach permits progenitor quantification and isolation for a variety of in vitro and in vivo applications, and has already yielded novel insight into pathways and mechanisms of neutrophil, monocyte, and DC differentiation.

We demonstrate how to identify and isolate 6 subsets of myeloid progenitors from murine bone marrow using a combination of magnetic and fluorescence sorting (MACS and FACS). This protocol can be used for in vitro culture assays (methylcellulose or liquid cultures), in vivo adoptive transfer experiments, and RNA/protein analyses.

식별 및 Oligopotent 및 계보 커밋된 골수성 창시자 마우스 골 수에서 격리

Myeloid progenitors that yield neutrophils, monocytes and dendritic cells (DCs) can be identified in and isolated from the bone marrow of mice for ...

Isolation of Lamina Propria Mononuclear Cells from Murine Colon Using Collagenase E

The intestine is the home to the largest number of immune cells in the body. The small and large intestinal immune systems police exposure to exogenous antigens and modulate responses to potent microbially derived immune stimuli. For this reason, the intestine is a major target site of immune dysregulation and inflammation in many diseases including but, not limited to inflammatory bowel diseases such as Crohn&#8217;s disease and ulcerative colitis, graft-versus-host disease (GVHD) after bone marrow transplantation (BMT), and many allergic and infectious conditions. Murine models of gastrointestinal inflammation and colitis are heavily used to study GI complications and to pre-clinically optimize strategies for prevention and treatment. Data gleaned from these models via isolation and phenotypic analysis of immune cells from the intestine is critical to further immune understanding that can be applied to ameliorate gastrointestinal and systemic inflammatory disorders. This report describes a highly effective protocol for the isolation of mononuclear cells (MNC) from the colon using a mixed silica-based density gradient interface. This method reproducibly isolates a significant number of viable leukocytes while minimizing contaminating debris, allowing subsequent immune phenotyping by flow cytometry or other methods.

The goal of this protocol is to isolate mononuclear cells that reside in the lamina propria of the colon by enzymatic digestion of the tissue using collagenase. This protocol allows for the efficient isolation of mononuclear cells resulting in a single cell suspension which in turn can be used for robust immunophenotyping.

콜라게나아제 E를 사용하여 뮤린 결장에서 라미나 프로프리아 단핵 세포의 분리

The intestine is the home to the largest number of immune cells in the body. The small and large intestinal immune systems police exposure to exogenous ...

Bone Marrow Transplantation Platform to Investigate the Role of Dendritic Cells in Graft-versus-Host Disease

Allogeneic bone marrow transplantation (BMT) is an effective therapy for hematological malignancies due to the graft-versus-leukemia (GVL) effect to eradicate tumors. However, its application is limited by the development of graft-versus-host disease (GVHD), a major complication of BMT. GVHD is evoked when T-cells in the donor grafts recognizealloantigen expressed by recipient cells and mount unwanted immunological attacks against recipient healthy tissues. Thus, traditional therapies are designed to suppress donor T-cell alloreactivity. However, these approaches substantially impair the GVL effect so that the recipient&#39;s survival is not improved. Understanding the effects of therapeutic approaches on BMT, GVL, and GVHD, is thus essential. Due to the antigen-presenting and cytokine-secreting capacities to stimulate donor T-cells, recipient dendritic cells (DCs) play a significant role in the induction of GVHD. Therefore, targeting recipient DCs becomes a potential approach for controlling GVHD. This work provides a description of a novel BMT platform to investigate how host DCs regulate GVH and GVL responses after transplantation. Also presented is an effective BMT model to study the biology of GVHD and GVL after transplantation.

Graft-versus-host disease is a major complication after allogeneic bone marrow transplantation. Dendritic cells play a critical role in the pathogenesis of graft-versus-host disease. The current article describes a novel bone marrow transplantation platform to investigate the role of dendritic cells in the development of graft-versus-host disease and the graft-versus-leukemia effect.

이식대 숙주 질환에서 수지상 세포의 역할을 조사하는 골수 이식 플랫폼

Allogeneic bone marrow transplantation (BMT) is an effective therapy for hematological malignancies due to the graft-versus-leukemia (GVL) effect to ...

Bone Marrow Transplantation Procedures in Mice to Study Clonal Hematopoiesis

Clonal hematopoiesis is a prevalent age-associated condition that results from the accumulation of somatic mutations in hematopoietic stem and progenitor cells (HSPCs). Mutations in driver genes, that confer cellular fitness, can lead to the development of expanding HSPC clones that increasingly give rise to progeny leukocytes harboring the somatic mutation. Because clonal hematopoiesis has been associated with heart disease, stroke, and mortality, the development of experimental systems that model these processes is key to understanding the mechanisms that underly this new risk factor. Bone marrow transplantation procedures involving myeloablative conditioning in mice, such as total-body irradiation (TBI), are commonly employed to study the role of immune cells in cardiovascular diseases. However, simultaneous damage to the bone marrow niche and other sites of interest, such as the heart and brain, is unavoidable with these procedures. Thus, our lab has developed two alternative methods to minimize or avoid possible side effects caused by TBI: 1) bone marrow transplantation with irradiation shielding and 2) adoptive BMT to non-conditioned mice. In shielded organs, the local environment is preserved allowing for the analysis of clonal hematopoiesis while the function of resident immune cells is unperturbed. In contrast, the adoptive BMT to non-conditioned mice has the additional advantage that both the local environments of the organs and the hematopoietic niche are preserved. Here, we compare three different hematopoietic cell reconstitution approaches and discuss their strengths and limitations for studies of clonal hematopoiesis in cardiovascular disease.

We describe three methods of bone marrow transplantation (BMT): BMT with total-body irradiation, BMT with shielded irradiation, and BMT method with no pre-conditioning (adoptive BMT) for the study of clonal hematopoiesis in mouse models.

Clonal hematopoiesis is a prevalent age-associated condition that results from the accumulation of somatic mutations in hematopoietic stem and progenitor ...