PMID- 34461993 OWN - NLM STAT- MEDLINE DCOM- 20211029 LR - 20220830 IS - 1757-6512 (Electronic) IS - 1757-6512 (Linking) VI - 12 IP - 1 DP - 2021 Aug 30 TI - Intratracheal transplantation of trophoblast stem cells attenuates acute lung injury in mice. PG - 487 LID - 10.1186/s13287-021-02550-z [doi] LID - 487 AB - BACKGROUND: Acute lung injury (ALI) is a common lung disorder that affects millions of people every year. The infiltration of inflammatory cells into the lungs and death of the alveolar epithelial cells are key factors to trigger a pathological cascade. Trophoblast stem cells (TSCs) are immune privileged, and demonstrate the capability of self-renewal and multipotency with differentiation into three germ layers. We hypothesized that intratracheal transplantation of TSCs may alleviate ALI. METHODS: ALI was induced by intratracheal delivery of bleomycin (BLM) in mice. After exposure to BLM, pre-labeled TSCs or fibroblasts (FBs) were intratracheally administered into the lungs. Analyses of the lungs were performed for inflammatory infiltrates, cell apoptosis, and engraftment of TSCs. Pro-inflammatory cytokines/chemokines of lung tissue and in bronchoalveolar lavage fluid (BALF) were also assessed. RESULTS: The lungs displayed a reduction in cellularity, with decreased CD45(+) cells, and less thickening of the alveolar walls in ALI mice that received TSCs compared with ALI mice receiving PBS or FBs. TSCs decreased infiltration of neutrophils and macrophages, and the expression of interleukin (IL) 6, monocyte chemoattractant protein-1 (MCP-1) and keratinocyte-derived chemokine (KC) in the injured lungs. The levels of inflammatory cytokines in BALF, particularly IL-6, were decreased in ALI mice receiving TSCs, compared to ALI mice that received PBS or FBs. TSCs also significantly reduced BLM-induced apoptosis of alveolar epithelial cells in vitro and in vivo. Transplanted TSCs integrated into the alveolar walls and expressed aquaporin 5 and prosurfactant protein C, markers for alveolar epithelial type I and II cells, respectively. CONCLUSION: Intratracheal transplantation of TSCs into the lungs of mice after acute exposure to BLM reduced pulmonary inflammation and cell death. Furthermore, TSCs engrafted into the alveolar walls to form alveolar epithelial type I and II cells. These data support the use of TSCs for the treatment of ALI. CI - (c) 2021. The Author(s). FAU - Han, Junwen AU - Han J AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Li, Gu AU - Li G AD - Department of Surgery, Brigham and Women's Hospital, Boston, MA, 02115, USA. FAU - Hou, Minmin AU - Hou M AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. FAU - Ng, Julie AU - Ng J AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. FAU - Kwon, Min-Young AU - Kwon MY AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. FAU - Xiong, Kevin AU - Xiong K AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. FAU - Liang, Xiaoliang AU - Liang X AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. AD - Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, 77024, USA. FAU - Taglauer, Elizabeth AU - Taglauer E AD - Department of Pediatrics, Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, 02115, USA. FAU - Shi, Yuanyuan AU - Shi Y AD - School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 100029, China. FAU - Mitsialis, S Alex AU - Mitsialis SA AD - Department of Pediatrics, Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, 02115, USA. FAU - Kourembanas, Stella AU - Kourembanas S AD - Department of Pediatrics, Division of Newborn Medicine, Boston Children's Hospital, Boston, MA, 02115, USA. FAU - El-Chemaly, Souheil AU - El-Chemaly S AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. FAU - Lederer, James A AU - Lederer JA AD - Department of Surgery, Brigham and Women's Hospital, Boston, MA, 02115, USA. FAU - Rosas, Ivan O AU - Rosas IO AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. AD - Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, 77024, USA. FAU - Perrella, Mark A AU - Perrella MA AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. AD - Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA. FAU - Liu, Xiaoli AU - Liu X AUID- ORCID: 0000-0003-2904-4413 AD - Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA. xlliu@rics.bwh.harvard.edu. AD - Department of Pediatric Newborn Medicine, Brigham and Women's Hospital, Boston, MA, 02115, USA. xlliu@rics.bwh.harvard.edu. LA - eng GR - R01 HL130275/HL/NHLBI NIH HHS/United States GR - U01 AI138318/AI/NIAID NIH HHS/United States GR - U01AI38318/NH/NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210830 PL - England TA - Stem Cell Res Ther JT - Stem cell research & therapy JID - 101527581 RN - 0 (Lipopolysaccharides) SB - IM MH - *Acute Lung Injury/chemically induced/therapy MH - Alveolar Epithelial Cells MH - Animals MH - Bronchoalveolar Lavage Fluid MH - Lipopolysaccharides MH - Lung MH - Mice MH - Mice, Inbred C57BL MH - Stem Cells MH - *Trophoblasts PMC - PMC8404310 OTO - NOTNLM OT - Acute lung injury OT - Alveolar epithelial cells OT - Engraftment OT - Inflammation OT - Trophoblast stem cells COIS- The authors declare that they have no competing interests. EDAT- 2021/09/01 06:00 MHDA- 2021/10/30 06:00 PMCR- 2021/08/30 CRDT- 2021/08/31 05:43 PHST- 2021/04/07 00:00 [received] PHST- 2021/08/08 00:00 [accepted] PHST- 2021/08/31 05:43 [entrez] PHST- 2021/09/01 06:00 [pubmed] PHST- 2021/10/30 06:00 [medline] PHST- 2021/08/30 00:00 [pmc-release] AID - 10.1186/s13287-021-02550-z [pii] AID - 2550 [pii] AID - 10.1186/s13287-021-02550-z [doi] PST - epublish SO - Stem Cell Res Ther. 2021 Aug 30;12(1):487. doi: 10.1186/s13287-021-02550-z.