Name: selective harvesting of marginating-pulmonary leukocytes
Uploaded: 2016-03-11T15:00:00.000+00:00
Duration: 7 min 6 s
Description: Watch this Scientific Journal Video about Selective Harvesting of Marginating-pulmonary Leukocytes at JoVE.com

저자이 작품은 NIH / NCI 부여 # (SBE에) R01CA172138에 의해 지원되었다.

동물 주제와 관련된 절차 텔 아비브 대학 기관 동물 관리 및 사용위원회 (IACUC)에 의해 승인되었습니다. 1. 쥐 프로토콜 <ol><li> 준비 <ol><li> 2 나비 21 G 바늘을 정렬합니다. 선택적으로, 바늘의 날카로운 가장자리를 제출하여이 무딘 칼날 나비 21 G 바늘을 준비합니다. </li><li> 중력 (건조) 설정에 적어도 30 분 동안 121 ° C에서 오토 클레이브 멸균 가위 이쌍, 무딘 칼날 집게, 지혈, 치아 조직 겸자 : 수술 도구를 소독. </li><li> 인산염 완충 식염수 (1X PBS) 용액 1 ㎖ 당 30 단위의 헤파린을 첨가하여 PBS 헤파린 (30 유니트 / ㎖)을 준비한다. RT에서 사용합니다. 35 ml의 동물에 따라 필요한 최소한의 볼륨입니다. </li><li> 공기 방울을 방지하기 위해 연동 펌프 라인과 나비 바늘로 헤파린 PBS 스트림. </li></ol></li><li> MP-백​​혈구의 폐와 컬렉션의 관류 <ol><li> 8 %의 이소 플루 란의 과다 복용으로 동물을 안락사. 모니터링 호흡 정지에 의한 안락사를 확인합니다. </li><li> 호흡 중단시 즉시 멸균 가위와 치아 조직 집게를 사용하여 복강와 가슴 충치를 엽니 다. 칼 모양의 과정 복부까지 따라 중간 선 복부 절개를 수행합니다. </li><li> 내부 장기 또는 큰 혈관을 천공하지 않고, 조심스럽게 양쪽의 갈비뼈를 절단 집게를 사용하여 흉골을 들어 올립니다. 흉골에 지혈을 클램프 및 rostrally 심폐 복잡한을 노출 흉곽을 접습니다. </li><li> 심장의 우심실에 나비 바늘을 삽입하고 약 분 이내에 (~ 250g 동물 6 ml)에 주사기로 혈액의 최대 볼륨을 수집합니다. </li><li> 간 (토론 참조)의 후방 관류을 피하기 위해 지혈과 대정맥을 클램프. </li><li> (P)의 유출 관으로 혈액을 함유하는 주사기를 교체하는 동안 우심실 내의 버터 플​​라이 니들 홀드eristaltic 펌프. </li><li> 심실 중격의 침투를 방지 좌심실에 5 ml의 수확 주사기에 연결된 제 2 나비 바늘을 삽입합니다. </li><li> 약 5 ml / 분의 속도로 연동 펌프의 전원을 켜고 조심스럽게 주사기로 혈액으로 오염 관류의 첫 번째 밀리리터를 수집합니다. 관류 색상이 빨간색으로 옅은 어둠에서 꺼질 때까지 계속합니다. (혈액 오염 perfuste 폐기). </li><li> 연동 펌프의 중단없이 빠른 속도로 20 ml의 수확 주사기와 5 ml의 수확 주사기를 교체하고 관류의 더 높은 속도 (최대 7 ml / 분)를 사용하는 폐 관류 20 ㎖를 수집합니다. 진공 형성을 방지하면서 지속적으로 수집 주사기에 관류 흐름을 모니터링한다. </li><li> 연동 펌프의 흐름을 중단. </li></ol></li><li> 백혈구 추출 <ol><li> 400 × g에서 10 분간 원심 분리하여 관류 액. </li><li> 유체를 대기음. </li><li>10 분 동안 400 XG에 10 ml의 PBS 또는 매체, 원심 분리기를 추가하고 유체를 대기음. 두 번이 단계를 반복합니다. PBS 또는 배지의 사용은 시료의 결과적인 사용에 의존한다. </li><li> 10 분 동안 400 XG에 20 ml의 PBS 또는 매체, 원심 분리기를 추가하고 유체를 대기음. </li><li> 시료 사용량 (FACS, PCR 등)에 기초하여, 원하는 농도로 세포를 재구성. </li></ol></li></ol> 2. 마우스 프로토콜 <ol><li> 준비 <ol><li> 2 나비 25 G 바늘을 정렬합니다. 선택적으로, 바늘의 날카로운 가장자리를 제출하여이 무딘 칼날 나비 25 G 바늘을 준비합니다. </li><li> 중력 (건조) 설정에 적어도 30 분 동안 121 ° C에서 오토 클레이브 멸균 가위 이쌍, 무딘 칼날 집게, 지혈, 치아 조직 겸자 : 수술 도구를 소독. </li><li> 1X PBS 용액 1 ㎖ 당 30 단위의 헤파린을 첨가하여 PBS 헤파린 (30 유니트 / ㎖)을 준비한다. RT에서 사용합니다. 25 ml의 동물에 따라 필요한 최소한의 볼륨입니다. </li><li> 헤어 구조 강화공기 방울을 방지하기 위해 연동 펌프 라인과 나비 바늘로 PBS 헤파린을하고있다. </li></ol></li><li> MP-백​​혈구의 폐와 컬렉션의 관류 <ol><li> 8 %의 이소 플루 란의 과다 복용으로 동물을 안락사. 모니터링 호흡 정지에 의한 안락사를 확인합니다. </li><li> 호흡 중단시 즉시 멸균 가위와 치아 조직 집게를 사용하여 복강와 가슴 충치를 엽니 다. 칼 모양의 과정 복부까지 따라 중간 선 복부 절개를 수행합니다. </li><li> 내부 장기 또는 큰 혈관을 천공하지 않고, 조심스럽게 양쪽의 갈비뼈를 절단 집게를 사용하여 흉골을 들어 올립니다. 흉골에 지혈을 클램프 및 rostrally 심폐 복잡한을 노출 흉곽을 접습니다. </li><li> 간 (토론 참조)의 후방 관류을 피하기 위해 지혈과 대정맥을 클램프. </li><li> 오른쪽 VEN으로 연동 펌프의 유출 관에 연결되는 버터 플​​라이 니들을 삽입마음의 tricle하고, 심장, 심실 중격의 avoidingpenetration의 좌심실에 2 ml의 수확 주사기에 연결된 제 2 나비 바늘. </li><li> 약 2 ml / 분의 속도로 펌프를 켜고 관류가 (혈액 오염 perfuste 폐기) 빨간색 옅은 어둠에서 꺼질 때까지 수확 주사기로 혈액 오염 관류의 첫 번째 밀리리터를 수집합니다. </li><li> 연동 펌프의 중단없이 빠른 속도로 10 ml의 수확 주사기 2 ml의 수확 주사기를 교체하고 관류의 더 높은 속도 (최대 4 ml / 분)를 사용하는 폐 관류 10 ㎖를 수집합니다. 진공 형성을 방지하면서 지속적으로 수집 주사기에 관류 흐름을 모니터링한다. </li><li> 연동 펌프의 흐름을 중단. </li></ol></li><li> 백혈구 추출 <ol><li> 400 × g에서 10 분간 원심 분리하여 관류 액. </li><li> 유체를 대기음. </li><li> 400에 10 ml의 PBS 또는 매체, 원심 분리기 추가10 분간 XG 및 유체를 흡인. 이 단계를 세 번 반복합니다. PBS 또는 배지의 사용은 시료의 결과적인 사용에 의존한다. </li><li> 10 분 동안 400 XG에 10 ml의 PBS 또는 매체, 원심 분리기를 추가하고 유체를 대기음. </li><li> 시료 사용량 (FACS, PCR 등)에 기초하여, 원하는 농도로 세포를 재구성. </li></ol></li></ol>

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저자는 공개 아무것도 없어.

본 명세서에있어서, 상기 선택적 수확을 가능 MP-백혈구 고유 인구 공부. 순환 또는 비장 백혈구에 비해 MP 인구 백혈구 개체군의 고유 조성물 높은 활성 수준, 다양한 사이토 카인의 높은 릴리스 및 프로와 항 염증성 사이토 카인 2,3- 높은 mRNA 수준을 특징으로한다. 구체적으로, 우리는 MP-NK 세포는 다양한 표적 세포에 대해 3,4- 순환 NK 세포보다 더 독성이 있고, 인터페론 γ 높은 수?...

폐의 모세 혈관 (즉, marginating - 폐 (MP) 백혈구) (1) 다른 면역 구획 (예를 들어, 순환, 비장, 골수)에서 백혈구에 비해 뚜렷한 백혈구의 구성과 독특한 활성을 나타내는 것으로 나타났다 2-에 부착 백혈구 4. 예를 들어, 순환 및 비장 NK 세포뿐만 아니라, 분화 된 전령 RNA (mRNA의) 레벨 및 프로와 항 염증성 사이토 카인의 분비 증가에 비해 다양한 종양 세포에 대하여 MP-백혈구 전시보다 천연 킬러 (NK) 세포 독성. MP-백​​혈구 순환 백혈구 (50 % 대에 각각 30 %)에 비해 본래 / 적응 면역의 높은 비율을 가지고있는 세포의 조성물은 순환하는 백혈구와 구별된다. 여기에 제시된 방법의 목적은, MP-백혈구의 선택적 수확을 가능하게이 중요하고 독특한 면역 구획 (세포 인구)을 연구하기 위해, 그리고 eluc하는 것입니다이러한 특정 세포에 대한 각종 조작 (예를 들면, 면역 활성)의 효과를 IDATE. 이 독특한 인구의 의미를 이해하기 위해서는, 면역 시스템 세포 매개 면역 (CMI)의 생체 내 기능을 통해 종양 세포, 미세 전이 및 잔여 질병을 순환 제어 할 수 있다는 것이 중요하다. 이 능력은 원발 종양을 제어하는 면역계의 선행 장애에도 불구하고 명확하며, 암 환자 및 동물 모델에서 생체 내 5 충분한 증거에 의해 지원된다. 중요한 것은, 이러한 연구 결과는 6,7가 (세포 독성 분석에 의해 측정) 종종 시험 관내 대부분의자가 종양 세포는 인간과 동물에서 혈액 샘플에서 백혈구를 순환시켜 세포 독성에 내성이보고 생체 연구와 일치한다. 이 차이는 같은 상술과 같은 별개의 백혈구 인구의 생체 내 존재에 기인 할 수있다상술 한 MP 백혈구 인구 및 활성화 NK 세포 (3) 구체적으로는 모집단. 실제로, 순환 및 비장 백혈구에 강한 것으로 밝혀졌다 동계 종양 세포 (MADB106)은, MP-NK 세포 -3,8- 의해 용해되는 것으로 도시 하였다. 따라서 fischer344 (F344) 쥐의 폐에 전이 의심 &#39;NK 내성&#39;MADB106 세포 아니라 순환 또는 일반적 접근 용이성을 부여 다룬다 비장 NK 세포에서 MP-NK 세포에 의해 제어된다. 정제 및 활성 MP-백혈구는 폐 조직의 분쇄 또는 생물학적 분해 (9)를 기반으로 폐에서 백혈구의 표준 수확 방법을 통해 액세스 할 수 없습니다. 우리의 접근 방식은 조직 처리 방법에 비해 두 가지 이점이있다. 먼저, 관류 방법은 선택적으로 다른 폐 실질 간질 세포에서 유래 한 기관지 폐포 비교 예에서 그들을 분리 MP-백혈구 수확tments. 둘째, 더 관류 기술은 분쇄 및 생물학적 처리와 달리 무결성 및 MP-백혈구의 생리적 환경을 유지하는 것은 손상 세포는 그들의 형태를 변경하고, 제조 및 면역 활성을 조절 특히 NK을 억제하는 다양한 인자의 방출을 유도하는 것으로 접근 세포 독성 10. 폐 암 전이 및 각종 감염성 질환의 주요 표적 장기입니다. 모든 순환 악성 세포와 감염된 세포는 변형 및 모세 혈관 내피 세포 및 주민 백혈구와 상호 작용하는 데 필요한 폐 모세 혈관을 통해 전달합니다. 이러한 조건 하에서, 세포의 순환을 용이하게 상주 MP-백혈구 타겟팅 할 수있다. 그것은 따라서이 면역 구획 활성화 백혈구을 가지고 생물학적으로 유리한 것, 그리고 서로 다른 생물학적 실험, 임상 설정에서이 독특한 MP-인구를 연구하는 것이 중요하다. 그 한건데주의하는 가치가있다다양한 생물학적 반응 - 수정하여 stemic 면역 활성화 (예를 들어, polyinosinic-polycytidylic 산 (폴리는 I : C) 또는 유형-C의 CpG 올리고 데 옥시 뉴클레오티드 (의 CpG-C ODN)를), 순환 백혈구 3보다 MP-백혈구 더 활성화하는 것으로 나타났다 8,11.

<table><tbody><tr><td>Autoclud Peristaltic pump</td><td></td><td></td><td></td></tr><tr><td>Butterfly needle</td><td>OMG</td><td></td><td>26G</td></tr><tr><td>Butterfly needle</td><td>OMG</td><td></td><td>21G*3/4&quot;</td></tr><tr><td>Syringe</td><td>Pic solution</td><td></td><td>1 ml</td></tr><tr><td>Syringe</td><td>Pic solution</td><td></td><td>2.5 ml</td></tr><tr><td>Syringe</td><td>Pic solution</td><td></td><td>5 ml</td></tr><tr><td>Syringe</td><td>Pic solution</td><td></td><td>10 ml</td></tr><tr><td>Syringe</td><td>Pic solution</td><td></td><td>25 ml</td></tr><tr><td>Blunted-edged forceps</td><td></td><td></td><td></td></tr><tr><td>Scissors</td><td></td><td></td><td></td></tr><tr><td>hemostat</td><td></td><td></td><td></td></tr><tr><td>Tissue forceps</td><td></td><td></td><td></td></tr><tr><td>Heparin sodium porcine mucosa (perservative free)</td><td>Sigma Aldrich</td><td></td><td></td></tr></tbody></table>

selective harvesting of marginating-pulmonary leukocytes

Marginating-pulmonary (MP) leukocytes are leukocytes that adhere to the inner endothelium of the lung capillaries. MP-leukocytes were shown to exhibit unique composition and characteristics compared to leukocytes of other immune compartments. Evidence suggests higher cytotoxicity of natural killer cells, and a distinct pro- and anti-inflammatory profile of the MP-leukocyte population compared to circulating or splenic immunocytes. The method presented herein enables selective harvesting of MP-leukocytes by forced perfusion of the lungs in either mice or rats. In contrast to other methods used to extract lung-leukocytes, such as tissue grinding and biological degradation, this method exclusively yields leukocytes from the lung capillaries, uncontaminated with parenchymal, interstitial, and broncho-alveolar cells. In addition, the perfusion technique better preserves the integrity and the physiological milieu of MP-leukocytes, without inducing physiological responses due to tissue processing. This unique MP leukocyte population is strategically located to identify and react towards abnormal circulating cells, as all circulating malignant cells and infected cells are detained while passing through the lung capillaries, physically interacting with endothelial cells and resident leukocytes,. Thus, selective harvesting of MP-leukocytes and their study under various conditions may advance our understanding of their biological and clinical significance, specifically with respect to controlling circulating aberrant cells and lung-related diseases.

MP-구획 전시 다른 백혈구 하위 집합 조성물은 백혈구 순환 비교. 유세포 분석을 이용하여, 백혈구 개체군 식별 모두 순환 및 MP 백혈구의 조성물의 특징을 정량화 하였다. 과립구와 림프구는 전방 및 측면 산란을 기반으로 확인되었다. 림프구 내 NKRP-1 세포는 밝은 NK 세포, 단핵구와 같은 T 세포로서 CD3 +, RM1 + 및 CD4 + / CD8 + / CD25로 확...

Watch this Scientific Journal Video about Selective Harvesting of Marginating-pulmonary Leukocytes at JoVE.com

Selective Harvesting of Marginating-pulmonary Leukocytes

Marginating - 폐 백혈구의 선택적 수확

Marginating-pulmonary leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe selective harvesting of this subpopulation of pulmonary leukocytes, by forced perfusion of the lungs in rats and mice. Marginating-pulmonary leukocytes seem critical in determining susceptibility to blood-borne and lung-related diseases.

Marginating-pulmonary (MP) leukocytes are leukocytes that adhere to the inner endothelium of the lung capillaries. MP-leukocytes were shown to exhibit ...

selective-harvesting-of-marginating-pulmonary-leukocytes

Research

JoVE Journal

Immunology and Infection

5.8K 조회수.  Tel-Aviv University. Marginating-pulmonary leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe selective harvesting of this subpopulation of pulmonary leukocytes, by forced perfusion of the lungs in rats and mice. Marginating-pulmonary leukocytes seem critical in determining susceptibility to blood-borne and lung-related diseases.

비디오: Selective Harvesting of Marginating-pulmonary Leukocytes

Harvesting Murine Alveolar Macrophages and Evaluating Cellular Activation Induced by Polyanhydride Nanoparticles

Biodegradable nanoparticles have emerged as a versatile platform for the design and implementation of new intranasal vaccines against respiratory infectious diseases. Specifically, polyanhydride nanoparticles composed of the aliphatic sebacic acid (SA), the aromatic 1,6-bis(p-carboxyphenoxy)hexane (CPH), or the amphiphilic 1,8-bis(p-carboxyphenoxy)-3,6-dioxaoctane (CPTEG) display unique bulk and surface erosion kinetics1,2 and can be exploited to slowly release functional biomolecules (e.g., protein antigens, immunoglobulins, etc.) in vivo3,4,5. These nanoparticles also possess intrinsic adjuvant activity, making them an excellent choice for a vaccine delivery platform6,7,8.
	In order to elucidate the mechanisms governing the activation of innate immunity following intranasal mucosal vaccination, one must evaluate the molecular and cellular responses of the antigen presenting cells (APCs) responsible for initiating immune responses. Dendritic cells are the principal APCs found in conducting airways, while alveolar macrophages (AM&#632;) predominate in the lung parenchyma9,10,11. AM&#632; are highly efficient in clearing the lungs of microbial pathogens and cell debris12,13. In addition, this cell type plays a valuable role in the transport of microbial antigens to the draining lymph nodes, which is an important first step in the initiation of an adaptive immune response9. AM&#632; also express elevated levels of innate pattern recognition and scavenger receptors, secrete pro-inflammatory mediators, and prime na&iuml;ve T cells12,14. A relatively pure population of AM&#632; (e.g., greater than 80%) can easily be obtained via lung lavage for study in the laboratory. Resident AM&#632; harvested from immune competent animals provide a representative phenotype of the macrophages that will encounter the particle-based vaccine in vivo. Herein, we describe the protocols used to harvest and culture AM&#632; from mice and examine the activation phenotype of the macrophages following treatment with polyanhydride nanoparticles in vitro.

Herein, we describe protocols for harvesting murine alveolar macrophages, which are resident innate immune cells in the lung, and examining their activation in response to co-culture with polyanhydride nanoparticles.

Polyanhydride의 Nanoparticles에 의해 유도된 Murine Macrophages 폐포 수확 및 평가 세포 활성화

Biodegradable nanoparticles have emerged as a  versatile platform for the design and implementation of new intranasal vaccines  against respiratory ...

연구

생체공학

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.

마우스 폐에 돌기 세포의 분리

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 ...

면역학 및 감염병학

Selective Harvesting of Marginating-hepatic Leukocytes

Marginating-hepatic (MH) leukocytes (leukocytes adhering to the sinusoids of the liver), were shown to exhibit unique composition and characteristics compared to leukocytes of other immune compartments. Specifically, evidence suggests a distinct pro- and anti-inflammatory profile of the MH-leukocyte population and higher cytotoxicity of liver-specific NK cells (namely, pit cells) compared to circulating or splenic immunocytes in both mice and rats. The method presented herein enables selective harvesting of MH leukocytes by forced perfusion of the liver in mice and rats. In contrast to other methods used to extract liver-leukocytes, including tissue grinding and biological degradation, this method exclusively yields leukocytes from the liver sinusoids, uncontaminated by cells from other liver compartments. In addition, the perfusion technique better preserves the integrity and the physiological milieu of MH leukocytes, sparing known physiological responses to tissue processing. As many circulating malignant cells and infected cells are detained while passing through the liver sinusoids, physically interacting with endothelial cells and resident leukocytes, the unique MH leukocyte population is strategically located to interact, identify, and react towards aberrant circulating cells. Thus, selective harvesting of MH-leukocytes and their study under various conditions may advance our understanding of the biological and clinical significance of MH leukocytes, specifically with respect to circulating aberrant cells and liver-related diseases and cancer metastases.

Marginating-hepatic leukocytes exhibit unique characteristics and distinct immunological functions compared to other leukocyte populations. Here we describe a method for selective harvesting of this specific hepatic cell population, through forced perfusion of the liver of rats or mice. Marginating-hepatic leukocytes seem critical in determining susceptibility to hepatic-related diseases and metastases.

Marginating-간 백혈구의 선택적 수확

Marginating-hepatic (MH) leukocytes (leukocytes adhering to the sinusoids of the liver), were shown to exhibit unique composition and characteristics ...

Distinguishing Intrapulmonary Immune Cells from Intravascular Immune Cell Populations: the Intrajugular Approach

Circadian rhythms refer to oscillations in various biological process that occur with a 24 h period. At the molecular level, such rhythms are comprised of a web of transcriptional-translational feedback loops (TTFL) of core clock genes. Individual tissues and organ systems, including the immune system, have their own clock. In the systemic circulation, various members of the CD45+ population oscillate across the day; however, many of these rhythms are not identical or even similar in the tissue resident CD45+ leukocyte population. When studying the role of circadian regulation of lung inflammation, CD45+ within the lung may need to be investigated. However, despite optimized perfusion methods, leukocytes trapped from the circulation persist in the lungs. The goal in designing this protocol was to distinguish between intravascular and intraparenchymal leukocytes. Towards this end, mice are injected with a fluorescent tagged CD45 antibody intrajugularly shortly before lung harvest. Thereafter, the lung is digested using a customized lung digestion technique to obtain a single cell suspension. The sample is stained for the regular panel of antibodies for intraparenchymal immune cells (including another CD45 antibody). Flowcytometric analyses shows a clear elucidation of the populations. Thus, the method of labeling and defining intrapulmonary CD45+ cells will be particularly important where the behavior of intrapulmonary and circulating immune cells are numerically and functionally distinct.

The aim of the current study is to describe a protocol for differentiating between intravascular and intraparenchymal immune cells in studies of lung inflammation. We use an intrajugular injection of a fluorescent tagged antibody prior to lung harvest. Further, we use an inflation-based lung digestion process to improve the yield of leukocytes from the lung.

Circadian rhythms refer to oscillations in various biological process that occur with a 24 h period. At the molecular level, such rhythms are comprised of ...

Harvest of Endothelial Cells from the Balloon Tips of Swan-Ganz Catheters after Right Heart Catheterization

A variety of pathologies lead to pulmonary hypertension (PH), which is defined as a mean pulmonary artery pressure exceeding 25 mmHg at rest. To further diagnose and manage PH, patients undergo repeated right heart catheterizations (RHC) wherein a Swan-Ganz catheter is advanced into a branch of the pulmonary artery and a balloon is inflated to wedge the catheter tip. This article illustrates a protocol whereby pulmonary artery endothelial cells (PAECs) may be harvested from the balloon tips of Swan-Ganz catheters after RHC, and purified with an anti- CD146 affinity column technique to purify putative PAECs. These cells might be used to provide an in situ snapshot of the biological state of the pulmonary vasculature endothelium to complement hemodynamic measurements obtained during RHC. Harvested and purified PAECs may be used for either cell culture or for subsequent analytical assays such as flow cytometery.

This protocol describes the removal and purification of pulmonary artery endothelial cells (PAECs) that adhere to the balloon tips of Swan-Ganz catheters while they are wedged in the pulmonary artery during right heart catheterization and remain adherent to the deflated balloon following removal from the patient's body.

오른쪽 심장 도관 법 후 백조 Ganz 카 테 터의 풍선 팁에서 내 피 세포의 수확

A variety of pathologies lead to pulmonary hypertension (PH), which is defined as a mean pulmonary artery pressure exceeding 25 mmHg at rest. To further ...

의학

Flow Cytometric Analysis for Identification of the Innate and Adaptive Immune Cells of Murine Lung

The respiratory tract is in direct contact with the outside environment and requires a precisely regulated immune system to provide protection while suppressing unwanted reactions to environmental antigens. Lungs host several populations of innate and adaptive immune cells that provide immune surveillance but also mediate protective immune responses. These cells, which keep the healthy pulmonary immune system in balance, also participate in several pathological conditions such as asthma, infections, autoimmune diseases, and cancer. Selective expression of surface and intracellular proteins provides unique immunophenotypic properties to the immune cells of the lung. Consequently, flow cytometry has an instrumental role in the identification of such cell populations during steady-state and pathological conditions. This paper presents a protocol that describes a consistent and reproducible method to identify the immune cells that reside in the lungs of healthy mice under steady-state conditions. However, this protocol can also be used to identify changes in these cell populations in various disease models to help identify disease-specific changes in the lung immune landscape.

In this study, we present an effective and reproducible protocol to isolate the immune populations of the murine respiratory system. We also provide a method for the identification of all innate and adaptive immune cells that reside in the lungs of healthy mice, using a 9-color-based flow cytometry panel.

뮤린 폐의 선천적 및 적응성 면역 세포의 확인을 위한 유세포 분석

The respiratory tract is in direct contact with the outside environment and requires a precisely regulated immune system to provide protection while ...

<meta charset="utf8"></head><body>유세포 분석을 위한 Isolation of Immune and Non-Immune Cells from Mouse Lungs (유세포 분석을 위한 마우스 폐에서 면역 및 비면역 세포 분리)

Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung

The lung is continuously exposed to pathogens and other noxious environmental stimuli, rendering it vulnerable to damage, dysfunction, and the development of disease. Studies utilizing mouse models of respiratory infection, allergy, fibrosis, and cancer have been critical to reveal mechanisms of disease progression and identify therapeutic targets. However, most studies focused on the mouse lung prioritize the isolation of either immune cells or epithelial cells, rather than both populations concurrently. Here, we describe a method for preparing a comprehensive single-cell suspension of both immune and non-immune populations suitable for flow cytometry and fluorescence-activated cell sorting. These populations include epithelial cells, endothelial cells, fibroblasts, and a variety of myeloid cell subsets. This protocol entails bronchoalveolar lavage and subsequent inflation of the lungs with dispase. Lungs are then digested in a liberase mixture. This method of processing liberates a variety of diverse cell types and results in a single-cell suspension that does not require manual dissociation against a filter, promoting cell survival and yielding high numbers of live cells for downstream analyses. In this protocol, we also define gating schemes for epithelial and myeloid cell subsets in both na&#239;ve and influenza-infected lungs. Simultaneous isolation of live immune and non-immune cells is key for interrogating intercellular crosstalk and gaining a deeper understanding of lung biology in health and disease.

<meta charset="utf8"></head><body>Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung(쥐 폐에서 살아있는 골수성 및 상피 세포 집단의 분리)

This protocol details the isolation of live immune and non-immune populations from the mouse lung at a steady state and following influenza infection. It also provides gating strategies for identifying epithelial and myeloid cell subsets.

Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung(쥐 폐에서 살아있는 골수성 및 상피 세포 집단의 분리)

The lung is continuously exposed to pathogens and other noxious environmental stimuli, rendering it vulnerable to damage, dysfunction, and the development ...

Magnetic Cell Selection을 사용한 In Vitro LLEC 배양 확립

Harvest and Primary Culture of Leptomeningeal Lymphatic Endothelial Cells

Leptomeningeal lymphatic endothelial cells (LLECs) are a recently discovered intracranial cellular population with a unique distribution clearly distinct from peripheral lymphatic endothelial cells. Their cellular function and clinical implications remain largely unknown. Consequently, the availability of a supply of LLECs is essential for conducting functional research in vitro. However, there is currently no existing protocol for harvesting and culturing LLECs in vitro.
This study successfully harvested LLECs using a multi-step protocol, which included coating the flask with fibronectin, dissecting the leptomeninges with the assistance of a microscope, enzymatically digesting the leptomeninges to prepare a single-cell suspension, inducing the expansion of LLECs with vascular endothelial growth factor-C (VEGF-C), and selecting lymphatic vessel hyaluronic receptor-1 (LYVE-1) positive cells through magnetic-activated cell sorting (MACS). This process ultimately led to the establishment of a primary culture. The purity of the LLECs was confirmed through immunofluorescence staining and flow cytometric analysis, with a purity level exceeding 95%. This multi-step protocol has demonstrated reproducibility and feasibility, which will greatly facilitate the exploration of the cellular function and clinical implications of LLECs.

저자 스포트라이트: 연수막 림프 내피 세포의 세포 기능 및 잠재적 임상적 영향 밝혀내기 

Leptomeningeal lymphatic endothelial cells (LLECs), a recently identified intracranial cell type, have poorly understood functions. This study presents a reproducible protocol for harvesting LLECs from mice and establishing in vitro primary cultures. This protocol is designed to enable researchers to delve into the cellular functions and potential clinical implications of LLECs.

연수막 림프 내피 세포의 수확 및 1차 배양

Leptomeningeal lymphatic endothelial cells (LLECs) are a recently discovered intracranial cellular population with a unique distribution clearly distinct ...

Marginating - 폐 백혈구의 선택적 수확

요약

더 많은 비디오 탐색

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Polyanhydride의 Nanoparticles에 의해 유도된 Murine Macrophages 폐포 수확 및 평가 세포 활성화

마우스 폐에 돌기 세포의 분리

Marginating-간 백혈구의 선택적 수확

Distinguishing Intrapulmonary Immune Cells from Intravascular Immune Cell Populations: the Intrajugular Approach

오른쪽 심장 도관 법 후 백조 Ganz 카 테 터의 풍선 팁에서 내 피 세포의 수확

뮤린 폐의 선천적 및 적응성 면역 세포의 확인을 위한 유세포 분석

Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung(쥐 폐에서 살아있는 골수성 및 상피 세포 집단의 분리)

Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung(쥐 폐에서 살아있는 골수성 및 상피 세포 집단의 분리)

Isolation of Live Myeloid and Epithelial Cell Populations from the Mouse Lung(쥐 폐에서 살아있는 골수성 및 상피 세포 집단의 분리)

연수막 림프 내피 세포의 수확 및 1차 배양