PMID- 19804781 OWN - NLM STAT- MEDLINE DCOM- 20091229 LR - 20181201 IS - 1872-7905 (Electronic) IS - 0022-1759 (Linking) VI - 351 IP - 1-2 DP - 2009 Dec 31 TI - A novel method for isolating dendritic cells from human bronchoalveolar lavage fluid. PG - 13-23 LID - 10.1016/j.jim.2009.09.009 [doi] AB - BACKGROUND: Dendritic cells (DCs) play a pivotal role in linking the innate and adaptive immune response and have been implicated in a variety of pulmonary diseases. Currently, studies on the role of DCs are limited by difficulties in isolating DCs from the lung. Surgical lung specimens are not readily available and purification of DCs from digested lung tissue is likely to induce phenotypical and functional changes. DCs obtained from the alveolar spaces are thought to represent the local microenvironment and can be obtained using minimally invasive techniques. We developed a novel method of isolating DCs from bronchoalveolar lavage (BAL) fluid. METHODS: After removal of macrophages, the remaining BAL cells were stained with a lineage mix (CD3-, CD14-, CD16-, CD19-, CD56-FITC), CD11c and HLA-DR and sorted with a FACS ARIA. DAPI was used as a dead-live marker. mDCs were low autofluorescent, lineage mix negative, CD11c+ and HLA-DR+ cells. pDCs were CD11c(-) but CD123+. Morphological assessment of sorted mDCs and pDCs was performed. Sorted mDCs were tested in a mixed leukocyte reaction (MLR) with naive CD4+ T cells and evaluated for T cell differentiation and cytokine production. With confocal microscopy DC-T cell interaction was assessed. RESULTS: Using our sorting strategy, mDCs and pDCs, with a high purity upon FACS analysis of the sorted fraction, were obtained. These cells showed the morphological characteristics of DCs. Most importantly, mDCs were able to induce T cell proliferation and differentiation in a MLR, and interact with T cells as assessed by confocal microscopy. These results indicate the presence of functional DCs. Freezing and thawing of the BAL cells did not affect phenotype or T cell stimulatory capacity of the isolated DCs. CONCLUSION: Using a novel sorting strategy, functional mDCs can be isolated from BAL fluid, enabling a detailed study in pulmonary disease. FAU - Ten Berge, B AU - Ten Berge B AD - Department of Pulmonary Medicine, Erasmus MC, Dr. Molewaterplein 50, 3015 GE Rotterdam, The Netherlands. FAU - Muskens, F AU - Muskens F FAU - Kleinjan, A AU - Kleinjan A FAU - Hammad, H AU - Hammad H FAU - Hoogsteden, H C AU - Hoogsteden HC FAU - Lambrecht, B N AU - Lambrecht BN FAU - Van den Blink, B AU - Van den Blink B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091003 PL - Netherlands TA - J Immunol Methods JT - Journal of immunological methods JID - 1305440 RN - 0 (Antigens, CD) RN - 0 (Cytokines) RN - 0 (HLA-DR Antigens) SB - IM MH - Antigens, CD/immunology/metabolism MH - Bronchoalveolar Lavage Fluid/*cytology/immunology MH - CD4-Positive T-Lymphocytes/immunology/*metabolism/pathology MH - Cell Differentiation MH - Cell Separation/*methods MH - Cytokines/metabolism MH - Dendritic Cells/*cytology/immunology/*metabolism MH - Flow Cytometry MH - HLA-DR Antigens/immunology/metabolism MH - Humans MH - Immunohistochemistry MH - Lymphocyte Activation MH - Lymphocyte Culture Test, Mixed MH - Microscopy, Confocal EDAT- 2009/10/07 06:00 MHDA- 2009/12/30 06:00 CRDT- 2009/10/07 06:00 PHST- 2009/04/23 00:00 [received] PHST- 2009/09/04 00:00 [revised] PHST- 2009/09/25 00:00 [accepted] PHST- 2009/10/07 06:00 [entrez] PHST- 2009/10/07 06:00 [pubmed] PHST- 2009/12/30 06:00 [medline] AID - S0022-1759(09)00289-0 [pii] AID - 10.1016/j.jim.2009.09.009 [doi] PST - ppublish SO - J Immunol Methods. 2009 Dec 31;351(1-2):13-23. doi: 10.1016/j.jim.2009.09.009. Epub 2009 Oct 3.