Name: isolation and flow cytometric analysis of human endocervical gamma delta t cells
Uploaded: 2017-02-06T10:30:00.000+00:00
Duration: 8 min 10 s
Description: Watch this Scientific Journal Video about Isolation and Flow Cytometric Analysis of Human Endocervical Gamma Delta T Cells at JoVE.com

우리는이 작업에 참여할 의지의 마이애미 WIHS 연구 참가자 감사합니다. 이 논문의 데이터는 마이애미 여성 부처 HIV 연구 (WIHS)에 의해 수집 하였다. 이 책의 내용은 전적으로 저자의 책임이며 국립 보건원 (NIH)의 공식 견해를 대변하지 않습니다. 이 작품은 전진에 대한 알레르기 및 전염병 국립 연구소와 여자의 부처 간 HIV 감염 연구 (WIHS) 허가 번호 U01의 AI103397, 알레르기 국립 연구소 감염증, 건강 [허가 번호 P30AI073961]의 국립 연구소, 국립 센터 지원 건강의 병진 과학 및 소수 민족 보건 및 건강 불균형에 국립 연구소, 건강 [허가 번호 UL1TR000460 및 1KL2TR000461] 국립 연구소 및 아동 건강 및 인간 발달의 국립 연구소 국립 연구소 [허가 번호 K23HD074489].

연구 활동은 마이애미 여성의 HIV 부처 연구 (WIHS) 및 AIDS 연구를위한 마이애미 센터 (CFAR) .Institutional 검토위원회 (의과 대학 마이애미 밀러 학교) 승인 전에 얻었다와 공동으로 마이애미 HIV 연구 단위의 대학에서 일어났다 채용 및 평가 또는 연구 관련 절차. 1. 자궁 경부 브러쉬 샘플 컬렉션 참고 : 참가자는 훈련 MD 또는 산부인과 의사와 cytobrush를 삽입하여 검경 시험에서 수행되었다 상피내 림프구의 컬렉션에 의해 수행되는 질 검사를 시행 하였다. <ol><li> 참가자 특성 <ol><li> 성적, 활성 임신하지 아니라 피임 약물이나 자궁 내 장치와 나이, 18 ~ 45 년 세되는 여성 참가자를 모집. </li><li> 질 검사하기 전에,이 참가자는 녹색에서 10 mL의 혈액 무승부를 받다말초 혈 단핵 세포 (PBMC) 분리 용 상부 헤파린 vacutainers. 자궁 경부 상피내 분석 (9)에 대한 제어 역할을합니다. </li></ol></li><li> 자궁 경부 샘플 컬렉션 <ol><li> 윤활없이 질에 적절한 크기의 살균 검경를 삽입합니다. 검기와 점액을 청소하는 멸균 거즈의 삽입을 용이하게하기 위해 따뜻한 물을 사용합니다. 검기의 위치는 운영 체제 및 ectocervix의 완벽한 시각화 할 수 있습니다. </li><li> 손에 가장 가까운 단지 강모가 표시 될 때까지 자궁 경관에 자궁 경부 브러쉬를 삽입합니다. 360 °의 브러시를 시계 방향으로 돌립니다. IMDM 배지 5 ㎖를 함유하는 15 ㎖의 튜브에 브러쉬를 옮긴다. </li><li> 즉시 수집 한 후, 얼음에 cytobrush를 포함하는 튜브를 배치합니다. 수집 된 상피내 세포의 높은 생존 능력을 얻으려면 1 시간 내에 실험실 및 프로세스에 cytobrush을 제공합니다. </li></ol></li></ol><ol><li> 4 단 (10 초) 스트로크를 적용 경부 cytobrush을 포함 소용돌이 관. </li><li> X 250 g에서 10 분 동안, cytobrush을 포함하는 튜브를 원심 분리기. </li><li> 조심스럽게 튜브에서 cytobrush을 제거 (튜브 하단의 펠렛을 방해하지 않음) 및 IMDM 미디어의 1 mL를 넣고 얼음에 튜브를 배치합니다. </li><li> 50 ML 튜브의 상단에 100mm의 셀 스트레이너에 cytobrush를 놓습니다. </li><li> 20 ㎖의 IMDM으로 cytobrush을 씻으십시오. </li><li> 250 × g에서 10 분 동안 원심 분리기 튜브. </li><li> 뜨는을 가만히 따르다 및 펠렛 세포를 1 mL의 IMDM에 재현 탁 2.3에 설명 된 이미 다시 중단 펠렛과 결합. </li><li> 자동 세포 계수기 (10)를 사용하여 세포를 트립 판 블루 수나 염료 10 μL로 세포 현탁액 10 μL를 조합하여 혈구를 이용하여 세포 수를 계산. 부드럽게 피펫 및 열 배 아래로 세포를 혼합 염색. 로드 10 μL두 혈구 챔버들 중 하나의 개구 내로의 혼합물. 다섯 개의 격자 영역의 모든 세포를 카운트. 생존과 비 생존 세포의 별도의 수를 유지합니다. 다음 식을 사용하여 세포 생존도를 결정 생존 세포 % = 비 생존 세포 × 100 / 총 세포 수의 세포를 포함한다. 다음 계산을 사용 mL의 후속 세포 농도 (세포의 총 수)를 결정한다. ml의 당 전체 세포는 = 총 세포 계수 × (희석 배수 / 계산 사각형의 수) 10,000 세포 / ml를 X. </li><li> 10 % DMSO 90 % FBS를 포함하는 동결 매체를 사용하여 격리 된 자궁 경부 세포를 고정. </li></ol> 3. 유동 세포 계측법 <ol><li> PBS를 1 % 소 혈청 알부민을 함유하는 100 μL FACS 완충액에 1-3 × 105 자궁 경부 세포 (다시 일시 </li><li> 1 μL / 10 추가 6 LIVE / DEAD 고칠 옐로우 사균 얼룩 키트 및 표 1에 기재된 농도로 표면 마커에 대한 항체. </li><li> 빛으로부터 보호 4 ° C에서 30 분 동안 세포를 품어. </li><li> 350 XG에서 5 분 동안 1 ㎖의 FACS 완충액 및 세포를 원심 분리 관에 추가 </li><li> 300 μL 1 % 파라 포름 알데히드의 세포 펠렛을 다시 일시 중지합니다. </li><li> FACS 완충액 100 μL 비드 한 방울 샘플 염색에 사용 된 항체의 동일한 농도를 첨가하여 염색에 사용되는 비드 및 항체를 사용하여 보정 제어를 준비한다. </li><li> 사이토, 405 nm의, 488 nm의 및 635 nm의 레이저가 장착 된 흐름에 스테인드 구슬과 샘플을 획득. </li></ol> 4. 자궁 경부 감마 델타 T 세포 분리 <ol><li> 자기 비드 분리 <ol><li> 다시 중단 재료 및 시약의 표 참조 TCR 감마 델타 마이크로 비드 키트에 포함 된 버퍼의 40 μL에서 2.6에 설명 된 자궁 경부 세포 펠렛 (≤10 7 총 셀). </li><li> 두 단계 염색 프로토콜에 대한 키트의 지시 사항을 따르십시오 : 첫째, 재치항 합텐 마이크로 비드-FITC와 시간 반 TCR 감마 델타 합텐 - 항체 및 초, </li><li> 4-8 ℃에서 15 분간 배양 한 후, 10 분 동안 300 XG에 버퍼 원심 1 ㎖를 첨가하여 세포를 세척 하였다. 튜브를 반전시켜 상등액을 경사 분리하고, 종이의 도움으로 건조 탭. </li><li> 제공된 버퍼 500 μL의 세포 펠렛을 다시 중단하고 공급 업체의 프로토콜에 따라 적절한 자기 분리기에 배치하여 자기 열을 준비합니다. </li><li> 칼럼에 세포 현탁액을 적용하고 통과 레이블이없는 세포를 수집하고 버퍼의 적절한 금액 (500 μL)과 열 배 씻는다. 버퍼 세 번, 열 저수지가 비어 번 할 때마다 추가하여 세척 단계를 수행합니다. 총 폐수를 수집합니다. 이 레이블이없는, 음의 세포 분획이다 </li><li> 열이 컬럼에 버퍼 1 ㎖를 자기 분리기 및 피펫을 형성하고 즉시 자기 라벨 부분을 세척 제거단단히 열와 함께 제공된 플런저를 적용하여 세포를 에드. 주의 : 자성 표지 항 합텐 마이크로 비드는 형광 염료 FITC가 결합되어 있기 때문에 절연 감마 델타 T 세포는 이미 형광 유세포 분석을 위해 염색 하였다. </li></ol></li><li> 셀 정렬 <ol><li> 생존 다이 항체 패널 셀 정렬, 라벨 자궁 경부 세포의 경우 3 절에 설명 된대로. </li><li> 라이브, CD45 + CD3 + 감마 델타 양성 세포에 전자 게이트를 설정하고 셀 정렬을 수행합니다. </li></ol></li></ol>

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저자는 이해의 충돌을 야기 할 수 상업적 또는 다른 관련이없는 (예를 들어, 제약 사주, 컨설팅, 자문위원회 회원, 관련 특허 또는 연구 자금).

여성 하부 생식기의 점막 취약점 평가는 HIV 수집 및 전송의 위험을 다루는 임상 연구의 필수적인 구성 요소입니다. 일반적으로 HIV 감염에 FGT 취약점은 생식기 분비물 (사이토 카인, 케모카인 및 항균 펩타이드) 12, 13에 용해 면역 조절제를 측정하여 평가한다. 그러나 이러한 바이오 마커는, 질 염증의 지표이다 생리 학적 및 병리학 적 사건에 의해 영향?...

우리는 GD 상피내 T 세포를 평가하기 위해 브러시 경부 샘플을 사용하는 방법을 개발 하였다. 자궁 경관은 원주 상피의 단일 층으로 늘어서있다. 상피내 림프구는 병원성 미생물 7, 8 발생에 면역 반응을 빠르게을 시작할 수 있습니다 상피 층 내부에있는 전선 림프구를 나타냅니다. 자궁 경부 상피내 구획의 면역 학적 사건을 이해하는 것은 HIV를 포함하여 감염을 방지하는 효과적인 전략의 설계에 중요합니다. 우리의 방법은 HIV 감염 또는 HIV 감염 위험이있는 여성 GD 상피내 T 세포의 역할을 조사하기 위해 신선하게 수집 된 인간 경부 샘플뿐만 아니라 냉동 경부 세포에 적용 할 수있다. 이 프로토콜의 주요 목표는 자궁 경부 상피내 구획에 새로운 면역 학적 이벤트를 발견하고 evaluat하는 것입니다HIV 감염 여성의 점막 취약점 마커로 전자 GD T 세포 반응. FGT 내성 주변 지식에 상당한 격차가 성공적으로 수집하고 점막 샘플의 처리에 어려움에 부분적으로 기인한다. 또한, 복잡한 점막 면역 세포 이질성, 서로와의 상호 연결성은 면역 시스템의 상태 및 성능을 반영 임상 적 측정을 식별하는 주요 과제이다. 우리는 추가 될 FRT 면역 기전을 확인하기위한 없어서는 안될 매우 다중화 된 단일 셀 기술을 사용하여 분석 할 수 고순도 GD 상피내 T 세포를 수득하는 방법을 개발 하였다.

<table><tbody><tr><td>Cytobrush Plus GT&amp;nbsp;</td><td>(CareFusion, San Diego, CA, USA</td><td></td><td></td></tr><tr><td>IMDM,Iscove&#039;s Modified Dulbecco&#039;s Medium&amp;nbsp;</td><td>ThermoFisher Scientific</td><td>12440061</td><td></td></tr><tr><td>Beckman Coulter automated cell counter (The Vi-CELL Series Cell Viability Analyzer</td><td>Beckman Coulter</td><td>496178</td><td></td></tr><tr><td>DMSO, Dimethyl sulfoxide&amp;nbsp;</td><td>Sigma Aldrich&amp;nbsp;</td><td>D2650</td><td></td></tr><tr><td>FBS, Fetal Bovine Serum</td><td>Invitrogen, Gibco</td><td>26140-079</td><td></td></tr><tr><td>PBS</td><td>Invitrogen, Gibco</td><td>10010023</td><td></td></tr><tr><td>BSA</td><td>Sigma Aldrich</td><td>A-9647</td><td></td></tr><tr><td>LIVE/DEAD Fixable Yellow Dead Cell Stain kit&amp;nbsp;</td><td>Life Technologies,</td><td>L349S9</td><td></td></tr><tr><td>1% paraformaldehyde</td><td>Sigma Aldrich&amp;nbsp;</td><td>D6148</td><td></td></tr><tr><td>Fortessa flow cytometer&amp;nbsp;</td><td>Becton Dickinson</td><td></td><td></td></tr><tr><td>UltraComp eBeads</td><td>eBioscience</td><td>01-2222-42</td><td></td></tr><tr><td>ArC Amine Reactive Compensation Beads (Life Technologies, Grand Island, NY, USA)</td><td>Life Technologies</td><td>A10346</td><td></td></tr><tr><td>anti-TCR gamma/delta MicroBead Kit&amp;nbsp;</td><td>Milteny Miltenyi Biotec Inc.</td><td>130-050-701</td><td></td></tr><tr><td>MS column</td><td></td><td>103-042-201</td><td></td></tr><tr><td>MACS separator</td><td></td><td>4124</td><td></td></tr></tbody></table>

isolation and flow cytometric analysis of human endocervical gamma delta t cells

여성의 생식 기관 (FRT) 점막 면역 시스템은 첫 번째 방어선 역할을합니다. 성기 점막의 더 나은 지식은 HIV를 포함하여 다른 병원균의 병원성을 이해하는 것이 필수적이다. 감마 델타 (GD) T 세포는 &#39;비 전통적인&#39;T 세포의 원형이며, 감마 및 델타 사슬로 구성된 이종이 T 세포 수용체 (TCR도)들의 식으로 정의 T 세포의 상대적으로 작은 부분 집합을 나타낸다. 이 알파 - 베타 TCR도에 의해 정의 된 고전 훨씬 더 잘 알려 CD4 + 헬퍼 T 세포와 CD8 + 세포 독성 T 세포에서 차별화. GD T 세포는 종종 조직 별 현지화를 보여 상피 세포에 농축되어있다. GD T 세포는 염증, 종양 감시, 감염성 질환, 및자가 면역 반응에 대한 면역 반응을 조율. 여기서는 재현성 분리 및 인간 자궁 경부 상피내 GD T 림프구를 분석하는 방법을 제시한다. 우리는 하여자의 부처 간 HIV 감염 연구 (WIHS)에 참여하는 여성에서 사용 경부 cytobrush 샘플을했습니다. 질 점막 모독가 인 조건에서 GD T 세포의 상호 작용에 대한 지식은 질 microbicides.In 추가의 개발을 포함한 점막 취약점을 해결하는 임상 연구에 적용 할 수 점막 GD T 세포 반응에 대한 지식을 가지고 감염성 질환의 치료에서 GD T 세포 기반 면역 요법의 적용 가능성.

최근에는 경부 상피내 GD T 세포를 분석하고, 우리는 HIV 감염 여성 9, 11의 경부 감마 델타 T 세포의 감소에 관하여보고 처음이었다. 여기서는 분리하고 경부 감마 델타 T 세포의 서브 세트를 분석하는 프로토콜을 기술한다. 도 1에 도시 된 바와 같이, T 세포 GD 용이 인간 자궁 경부 세포 샘플에서 검출 될 수있다. <p c...

Watch this Scientific Journal Video about Isolation and Flow Cytometric Analysis of Human Endocervical Gamma Delta T Cells at JoVE.com

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

We describe here an isolation method to obtain human endocervical intraepithelial lymphocytes for the analysis of intraepithelial gamma delta T cells. This protocol can be extended for the purification of endocervical gamma delta T cells by magnetic beads or by cell sorting.

인간의 자궁 경부 감마 델타 T 세포의 분리 및 유세포 분석

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

isolation-flow-cytometric-analysis-human-endocervical-gamma-delta-t

Universidad de Cartagena UDEC

Research

JoVE Journal

Immunology and Infection

8.7K 조회수.  Miller School of Medicine, University of Miami. We describe here an isolation method to obtain human endocervical intraepithelial lymphocytes for the analysis of intraepithelial gamma delta T cells. This protocol can be extended for the purification of endocervical gamma delta T cells by magnetic beads or by cell sorting.

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

Expansion of Human Peripheral Blood  &gamma;&delta; T Cells using Zoledronate

Human &gamma;&delta; T cells can recognize and respond to a wide variety of stress-induced antigens, thereby developing innate broad anti-tumor and anti-infective activity.1 The majority of &gamma;&delta; T cells in peripheral blood have the V&gamma;9V&delta;2 T cell receptor. These cells recognize antigen in a major histocompatibility complex-independent manner and develop strong cytolytic and Th1-like effector functions.1Therefore, &gamma;&delta; T cells are attractive candidate effector cells for cancer immunotherapy. V&gamma;9V&#x03B4;2 T cells respond to phosphoantigens such as (E)-4-hydroxy-3-methyl-but-2-enyl pyrophosphate (HMBPP), which is synthesized in bacteria via isoprenoid biosynthesis;2 and isopentenyl pyrophosphate (IPP), which is produced in eukaryotic cells through the mevalonate pathway.3 In physiological condition, the generation of IPP in nontransformed cell is not sufficient for the activation of &gamma;&delta; T cells. Dysregulation of mevalonate pathway in tumor cells leads to accumulation of IPP and &gamma;&delta; T cells activation.3 Because aminobisphosphonates (such as pamidronate or zoledronate) inhibit farnesyl pyrophosphate synthase (FPPS), the enzyme acting downstream of IPP in the mevalonate pathway, intracellular levels of IPP and sensitibity to &gamma;&delta; T cells recognition can be therapeutically increased by aminobisphosphonates. IPP accumulation is less efficient in nontransfomred cells than tumor cells with a pharmacologically relevant concentration of aminobisphosphonates, that allow us immunotherapy for cancer by activating &gamma;&delta; T cells with aminobisphosphonates. 4 Interestingly, IPP accumulates in monocytes when PBMC are treated with aminobisphosphonates, because of efficient drug uptake by these cells. 5 Monocytes that accumulate IPP become antigen-presenting cells and stimulate V&gamma;9V&delta;2 T cells in the peripheral blood.6 Based on these mechanisms, we developed a technique for large-scale expansion of &gamma;&delta; T cell cultures using zoledronate and interleukin-2 (IL-2).7 Other methods for expansion of &gamma;&delta; T cells utilize the synthetic phosphoantigens bromohydrin pyrophosphate (BrHPP)8 or 2-methyl-3-butenyl-1-pyrophosphate (2M3B1PP).9 All of these methods allow ex vivo expansion, resulting in large numbers of &gamma;&delta; T cells for use in adoptive immunotherapy. However, only zoledronate is an FDA-approved commercially available reagent. Zoledronate-expanded &gamma;&delta; T cells display CD27-CD45RA- effector memory phenotype and thier function can be evaluated by IFN-&gamma; production assay. 7

Expansion of Human Peripheral Blood  &#947;&#948; T Cells using Zoledronate

A method to expand &gamma;&delta; T cells from peripheral blood mononuclear cells (PBMC) is described. PBMC-derived &gamma;&delta; T cells are stimulated and expanded using zoledronate and interleukin-2 (IL-2). Large scale expansion of &gamma;&delta; T cells can be applied to autologous cellular immunotherapy of cancer.

Zoledronate를 사용하는 사람 말초혈의 확장 γδ T 세포

Human &gamma;&delta; T cells can recognize and respond to a wide variety of stress-induced antigens, thereby developing innate broad anti-tumor and ...

연구

면역학 및 감염병학

Collection, Isolation, and Flow Cytometric Analysis of Human Endocervical Samples

Despite the public health importance of mucosal pathogens (including HIV), relatively little is known about mucosal immunity, particularly at the female genital tract (FGT). Because heterosexual transmission now represents the dominant mechanism of HIV transmission, and given the continual spread of sexually transmitted infections (STIs), it is critical to understand the interplay between host and pathogen at the genital mucosa. The substantial gaps in knowledge around FGT immunity are partially due to the difficulty in successfully collecting and processing mucosal samples. In order to facilitate studies with sufficient sample size, collection techniques must be minimally invasive and efficient. To this end, a protocol for the collection of cervical cytobrush samples and subsequent isolation of cervical mononuclear cells (CMC) has been optimized. Using ex vivo flow cytometry-based immunophenotyping, it is possible to accurately and reliably quantify CMC lymphocyte/monocyte population frequencies and phenotypes. This technique can be coupled with the collection of cervical-vaginal lavage (CVL), which contains soluble immune mediators including cytokines, chemokines and anti-proteases, all of which can be used to determine the anti- or pro-inflammatory environment in the vagina.

The use of cytobrush sampling to collect lymphocytes and monocytes from the endocervix is a minimally invasive technique that provides samples for analysis of female genital tract immunity. In this protocol, we describe the collection of cytobrush samples and immune cell isolation for flow cytometry assays.

컬렉션, 격리, 인간 자궁 경부 샘플의 유세포 분석

Despite the public health importance of mucosal pathogens (including HIV), relatively little is known about mucosal immunity, particularly at the female ...

의학

Isolation and Ex Vivo Culture of V&#948;1+CD4+&#947;&#948; T Cells, an Extrathymic &#945;&#946;T-cell Progenitor

The thymus, the primary organ for the generation of &#945;&#946; T cells and backbone of the adaptive immune system in vertebrates, has long been considered as the only source of &#945;&#946;T cells. Yet, thymic involution begins early in life leading to a drastically reduced output of na&#239;ve &#945;&#946;T cells into the periphery. Nevertheless, even centenarians can build immunity against newly acquired pathogens. Recent research suggests extrathymic &#945;&#946;T cell development, however our understanding of pathways that may compensate for thymic loss of function are still rudimental. &#947;&#948; T cells are innate lymphocytes that constitute the main T-cell subset in the tissues. We recently ascribed a so far unappreciated outstanding function to a &#947;&#948; T cell subset by showing that the scarce entity of CD4+ V&#948;1+&#947;&#948; T cells can transdifferentiate into &#945;&#946;T cells in inflammatory conditions. Here, we provide the protocol for the isolation of this progenitor from peripheral blood and its subsequent cultivation. V&#948;1 cells are positively enriched from PBMCs of healthy human donors using magnetic beads, followed by a second step wherein we target the scarce fraction of CD4+ cells with a further magnetic labeling technique. The magnetic force of the second labeling exceeds the one of the first magnetic label, and thus allows the efficient, quantitative and specific positive isolation of the population of interest. We then introduce the technique and culture condition required for cloning and efficiently expanding the cells and for identification of the generated clones by FACS analysis. Thus, we provide a detailed protocol for the purification, culture and ex vivo expansion of CD4+ V&#948;1+&#947;&#948; T cells. This knowledge is prerequisite for studies that relate to this &#945;&#946;T cell progenitor`s biology and for those who aim to identify the molecular triggers that are involved in its transdifferentiation.

Isolation and Ex Vivo Culture of V&#948;1+CD4+&#947;&#948; T Cells, an Extrathymic &#945;&#946;T-cell Progenitor

Here, we provide an optimized protocol for the isolation and cloning of the scarce T-cell entity of peripheral V&#948;1+CD4+ T cells that is, as we showed recently, an extrathymic &#945;&#946; T-cell progenitor. This technique allows to quantitatively isolate, clone and efficiently expand these cells in ex vivo culture.

분리 및<em&gt; 전의 VIVO</emVδ1의&gt; 문화<sup&gt; +</sup&gt; CD4<sup&gt; +</sup&gt; γδ T 세포, Extrathymic αβT 세포 선조

The thymus, the primary organ for the generation of &#945;&#946; T cells and backbone of the adaptive immune system in vertebrates, has long been ...

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

Our laboratory has recently demonstrated that natural killer (NK) cells are capable of eradicating orthotopically implanted mouse GL26 and rat CNS-1 malignant gliomas soon after intracranial engraftment if the cancer cells are rendered deficient in their expression of the &#946;-galactoside-binding lectin galectin-1 (gal-1). More recent work now shows that a population of Gr-1+/CD11b+ myeloid cells is critical to this effect. To better understand the mechanisms by which NK and myeloid cells cooperate to confer gal-1-deficient tumor rejection we have developed a comprehensive protocol for the isolation and analysis of glioma-infiltrating peripheral blood mononuclear cells (PBMC). The method is demonstrated here by comparing PBMC infiltration into the tumor microenvironment of gal-1-expressing GL26 gliomas with those rendered gal-1-deficient via shRNA knockdown. The protocol begins with a description of&#160;how to culture and prepare GL26 cells for inoculation into the syngeneic C57BL/6J mouse brain. It then explains the steps involved in the isolation and flow cytometric analysis of glioma-infiltrating PBMCs from the early brain tumor microenvironment. The method is adaptable to a number of in vivo experimental designs in which temporal data on immune infiltration into the brain is required. The method is sensitive and highly reproducible, as glioma-infiltrating PBMCs can be isolated from intracranial tumors as soon as 24 hr post-tumor engraftment with similar cell counts observed from time point matched tumors throughout independent experiments. A single experimentalist can perform the method from brain harvesting to flow cytometric analysis of glioma-infiltrating PBMCs in roughly 4-6 hr depending on the number of samples to be analyzed. Alternative glioma models and/or cell-specific detection antibodies may also be used at the experimentalists&#8217; discretion to assess the infiltration of several other immune cell types of interest without the need for alterations to the overall procedure.

Presented here is a straightforward method for the isolation and flow cytometric analysis of glioma-infiltrating peripheral blood mononuclear cells that yields time-dependent quantitative data on the number and activation status of immune cells entering the early brain tumor microenvironment.

분리 및 신경 교종-침투 말초 혈액 단핵 세포의 유세포 분석

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

Characterization of Human Monocyte-derived Dendritic Cells by Imaging Flow Cytometry: A Comparison between Two Monocyte Isolation Protocols

Dendritic cells (DCs) are antigen presenting cells of the immune system that play a crucial role in lymphocyte responses, host defense mechanisms, and pathogenesis of inflammation. Isolation and study of DCs have been important in biological research because of their distinctive features. Although they are essential key mediators of the immune system, DCs are very rare in blood, accounting for approximately 0.1 - 1% of total blood mononuclear cells. Therefore, alternatives for isolation methods rely on the differentiation of DCs from monocytes isolated from peripheral blood mononuclear cells (PBMCs). The utilization of proper isolation techniques that combine simplicity, affordability, high purity, and high yield of cells is imperative to consider. In the current study, two distinct methods for the generation of DCs will be compared. Monocytes were selected by adherence or negatively enriched using magnetic separation procedure followed by differentiation into DCs with IL-4 and GM-CSF. Monocyte and MDDC viability, proliferation, and phenotype were assessed using viability dyes, MTT assay, and CD11c/ CD14 surface marker analysis by imaging flow cytometry. Although the magnetic separation method yielded a significant higher percentage of monocytes with higher proliferative capacity when compared to the adhesion method, the findings have demonstrated the ability of both techniques to simultaneously generate monocytes that are capable of proliferating and differentiating into viable CD11c+ MDDCs after seven days in culture. Both methods yielded &gt; 70% CD11c+ MDDCs. Therefore, our results provide insights that contribute to the development of reliable methods for isolation and characterization of human DCs.

This study compares two different methods of human monocyte isolation for obtaining in vitro dendritic cells (DCs). Monocytes are selected by adherence or negatively enriched by magnetic separation. Monocyte yield and viability along with MDDC viability, proliferation and CD11c/CD14 surface marker expression will be compared between both methods.

이미징 유동 세포 계측법에 의해 인간 단핵구 유래 수지상 세포의 특성 : 두 단핵구 격리 프로토콜 사이의 비교

Dendritic cells (DCs) are antigen presenting cells of the immune system that play a crucial role in lymphocyte responses, host defense mechanisms, and ...

Analysis of Human T Cell Activity in an Allogeneic Co-Culture Setting of Pre-Treated Tumor Cells

Cytotoxic T cells play a key role in the elimination of tumor cells and are, therefore, intensively studied in cancer immunology. The frequency and activity of cytotoxic T cells within tumors and their tumor microenvironment (TME) are now well-established prognostic and predictive biomarkers for numerous tumor types. However, it is well-known that various tumor treatment modalities, including radiotherapy, chemotherapy, immunotherapy, and targeted therapy, modulate not only the immunogenicity of the tumor but also the immune system itself. Consequently, the interaction between tumor cells and T cells requires more intensive study in different therapeutic contexts to fully understand the complex role of T cells during tumor therapy. To address this need, a protocol was developed to analyze the activity and proliferative capacity of human cytotoxic (CD8+) T cells in co-culture with pre-treated tumor cells. Specifically, CD8+ T cells from healthy donors are stained with the non-toxic proliferation marker carboxyfluorescein diacetate succinimidyl ester (CFSE) and stimulated using CD3/CD28-coated plates. Subsequently, T cells are co-cultured with pre-treated tumor cells. As a readout, T cell proliferation is quantified by measuring CFSE signal distribution and assessing the expression of surface activation markers via flow cytometry. This can be further complemented by quantifying cytokine release using enzyme-linked immunosorbent assay (ELISA). This method facilitates the evaluation of treatment-induced changes in the interaction between tumor cells and T cells, providing a foundation for more detailed analyses of tumor treatment modalities and their immunogenicity in a human ex vivo setting. Additionally, it contributes to the reduction of pre-clinical in vivo analyses.

The present protocol describes an experimental workflow that allows for the ex vivo analysis of human T cell stimulation in an allogenic co-culture system with pre-treated tumor cells.

전처리된 종양 세포의 동종 공동 배양 환경에서의 인간 T 세포 활성 분석

Cytotoxic T cells play a key role in the elimination of tumor cells and are, therefore, intensively studied in cancer immunology. The frequency and ...

암 연구학

Isolation of Dendritic Cells from the Human Female Reproductive Tract for Phenotypical and Functional Studies

The characterization of the human dendritic cells (DCs) resident in mucosal tissues is challenging due to the difficulty in obtaining samples, and the low numbers of DCs present per tissue. Yet, as the phenotype and function of DCs is modified by the tissue environment, it is necessary to analyze tissue resident DC populations, since blood derived DCs incompletely reflect the complexities of DCs in tissues. Here we present a protocol to isolate DCs from the human female reproductive tract (FRT) using hysterectomy specimens that allows both phenotypical and functional analyses. The protocol consists of tissue digestion to generate a single cell mixed cell suspension, followed by positive magnetic bead selection. Our tissue digestion protocol does not cleave surface markers, which allows phenotypical and functional analysis of DCs in the steady state, without overnight incubation or cell activation. This protocol can be adapted for the isolation of other immune cell types or isolation of DCs from other tissues.

We describe here a method to isolate and purify dendritic cells from different anatomical compartments in the human female reproductive tract for the evaluation of their phenotypical and functional characteristics. This method can be adapted to isolate other immune cells or dendritic cells from other mucosal tissues.

Phenotypical 및 기능 연구에 대 한 인간의 여성 생식 관에서 수지상 세포의 고립

The characterization of the human dendritic cells (DCs) resident in mucosal tissues is challenging due to the difficulty in obtaining samples, and the low ...

Discrimination of Seven Immune Cell Subsets by Two-fluorochrome Flow Cytometry

Immune cell characterization heavily relies on multicolor flow cytometry to identify subpopulations based on differential expression of surface markers. Setup of a classic multicolor panel requires high-end instruments, custom labeled antibodies, and careful study design to minimize spectral overlap. We developed a multiparametric analysis to identify major human immune populations (CD4+ and CD8+ T cells, &#947;&#948; T cells, B cells, NK cells and monocytes) in peripheral blood by combining seven lineage markers using only two fluorochromes. Our strategy is based on the observation that lineage markers are constantly expressed in a unique combination by each cell population. Combining this information with a careful titration of the antibodies allows investigators to record five additional markers, expanding the optical limit of most flow cytometers. Head-to-head comparison demonstrated that the vast majority of immune cell populations in peripheral blood can be characterized with comparable accuracy between our method and the classic &#34;one fluorochrome-one marker approach&#34;, although the latter is still more precise for identifying populations such as NKT cells and &#947;&#948; T cells. Combining seven markers using two fluorochromes allows for the analysis of complex immune cell populations and clinical samples on affordable 6-10 fluorochrome flow cytometers, and even on 2-3 fluorochrome field instruments in areas with limited resources. High-end instruments can also benefit from this approach by using extra fluorochromes to accomplish deeper flow cytometry analysis. This approach is also very well suited for screening several cell populations in the case of clinical samples with limited number of cells.

Here, we present a flow cytometric protocol to identify CD4+ and CD8+ T cells, &#947;&#948; T cells, B cells, NK cells and monocytes in human peripheral blood by using only two fluorochromes instead of seven. With this approach, five additional markers can be recorded on most flow cytometers.

2 형광 색소에 의해 7 개의 면역 세포 하위 집합의 차별 Cytometry 흐름

Immune cell characterization heavily relies on multicolor flow cytometry to identify subpopulations based on differential expression of surface markers. ...

Isolation of Uterine Innate Lymphoid Cells for Analysis by Flow Cytometry

Described here is a simple method to isolate and phenotype mouse group 1 uterine innate lymphoid cells (g1 uILCs) from individual pregnant uterus by flow cytometry. The protocol describes how to set up time mating to obtain multiple synchronous dams, the mechanical and enzymatic digestion of the pregnant uterus, the staining of single-cell suspensions, and a FACS strategy to phenotype and discriminate g1 uILCs. Although this method inevitably loses the spatial information of cellular distribution within the tissue, the protocol has been successfully applied to determine uILC heterogeneity, their response to maternal and foetal factors affecting pregnancy, their gene expression profile, and their functions.

This is a method to isolate uterine lymphoid cells from both pregnant and non-pregnant mice. This method can be used for multiple downstream applications such as FACS phenotyping, cell sorting, functional assays, RNA-seq, and proteomics. The protocol here demonstrates how to phenotype group 1 uterine innate lymphoid cells by flow cytometry.

유동 세포측정에 의한 분석을 위한 자궁 내 선천 림프구 세포의 격리

Described here is a simple method to isolate and phenotype mouse group 1 uterine innate lymphoid cells (g1 uILCs) from individual pregnant uterus by flow ...

Isolation of CD4+ T-cells and Analysis of Circulating T-follicular Helper (cTfh) Cell Subsets from Peripheral Blood Using 6-color Flow Cytometry

Aberrant T-follicular helper (Tfh) cell activity is detectable in autoimmune conditions and their presence is associated with clinical outcomes when the lymph node microenvironment in B-cell non-Hodgkin&#39;s lymphoma is analyzed. Subsets of circulating T-follicular helper cells (cTfh), the circulating memory compartment of Tfh cells in the blood, are also perturbed in disease and therefore represent potential novel predictive biomarkers. Peripheral blood-based testing is advantageous because it is relatively non-invasive and allows simple serial monitoring.This article describes a method for isolating CD4+ T-cells from human blood, and further analysis by flow-cytometry to enumerate cTfh cells and the proportions of their various subsets (cTfhPD-1-/+/hi, cTfh1,2,17 and cTfh1/17). The level of these subsets was then compared between normal subjects and patients with lymphoma. We found that the method was robust enough to obtain reliable results from routinely collected patient material. The technique we describe for the analysis can be easily adapted to cell sorting and downstream applications such as RT-PCR.

Isolation of CD4+ T-cells and Analysis of Circulating T-follicular Helper cTfh Cell Subsets from Peripheral Blood Using 6-color Flow Cytometry

Here, a protocol for the isolation and characterization of CD4+ T-cell subsets from human peripheral blood is described. Purified CD4+ T-cells are analyzed by flow cytometry to determine proportions of T-follicular helper cell subsets.

CD4의 격리+ T-세포 및 분석의 순환 T-follicular 도우미 (cTfh) 6 컬러 Flow Cytometry 주변 혈액을 사용 하 여에서 셀 하위 집합

Aberrant T-follicular helper (Tfh) cell activity is detectable in autoimmune conditions and their presence is associated with clinical outcomes when the ...

인간의 자궁 경부 감마 델타 T 세포의 분리 및 유세포 분석

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