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Lung progenitor

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https://www.readbyqxmd.com/read/29775645/mesenchymal-stromal-cells-induce-a-permissive-state-in-the-bone-marrow-that-enhances-g-csf-induced-hematopoietic-stem-cell-mobilization-in-mice
#1
Evert-Jan F M de Kruijf, Rob Zuijderduijn, Marjolein C Stip, Willem E Fibbe, Melissa van Pel
Mesenchymal stromal cells (MSC) support hematopoietic stem cells (HSC) in vivo and enhance HSC engraftment and hematopoietic recovery upon co-transplantation with HSC. These data have led to the hypothesis that MSC may impact the HSC niche, leading to changes in HSC retention and trafficking. We studied the effect of MSC administration on the HSC compartment in the bone marrow (BM) in mice. Following injection of MSC, HSC numbers in the BM were decreased coinciding with an increased cell cycle activity compared to PBS-injected controls...
May 15, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29775480/titan-cells-formation-in-cryptococcus-neoformans-is-finely-tuned-by-environmental-conditions-and-modulated-by-positive-and-negative-genetic-regulators
#2
Benjamin Hommel, Liliane Mukaremera, Radames J B Cordero, Carolina Coelho, Christopher A Desjardins, Aude Sturny-Leclère, Guilhem Janbon, John R Perfect, James A Fraser, Arturo Casadevall, Christina A Cuomo, Françoise Dromer, Kirsten Nielsen, Alexandre Alanio
The pathogenic fungus Cryptococcus neoformans exhibits morphological changes in cell size during lung infection, producing both typical size 5 to 7 μm cells and large titan cells (> 10 μm and up to 100 μm). We found and optimized in vitro conditions that produce titan cells in order to identify the ancestry of titan cells, the environmental determinants, and the key gene regulators of titan cell formation. Titan cells generated in vitro harbor the main characteristics of titan cells produced in vivo including their large cell size (>10 μm), polyploidy with a single nucleus, large vacuole, dense capsule, and thick cell wall...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29774067/estrogen-receptors-orchestrate-cell-growth-and-differentiation-to-facilitate-liver-regeneration
#3
Ta-Lun Kao, Yu-Ping Kuan, Wei-Chung Cheng, Wei-Chun Chang, Long-Bin Jeng, Shuyuan Yeh, Wen-Lung Ma
Background and Aims: Improving liver regeneration (LR) capacity and thereby liver function reserve is a critical bridging strategy for managing liver failure patients. Since estrogen signaling may participate in LR, our aim was to characterize the roles of ERα and ERβ in LR. Methods: LR capacity and estradiol levels following 2/3rd partial hepatectomy (PHx) were compared in ERα-KO or ERβ-KO vs. wildtype mice. The ERα- or ERβ-related transcriptome and interactome were analyzed from regenerating livers, and then bioinformatics was used for pathway discovery and analysis of interactome-transcriptome relationships...
2018: Theranostics
https://www.readbyqxmd.com/read/29769669/diverse-mechanisms-for-endogenous-regeneration-and-repair-in-mammalian-organs
#4
REVIEW
James M Wells, Fiona M Watt
Mammalian organs comprise an extraordinary diversity of cell and tissue types. Regenerative organs, such as the skin and gastrointestinal tract, use resident stem cells to maintain tissue function. Organs with a lower cellular turnover, such as the liver and lungs, mostly rely on proliferation of committed progenitor cells. In many organs, injury reveals the plasticity of both resident stem cells and differentiated cells. The ability of resident cells to maintain and repair organs diminishes with age, whereas, paradoxically, the risk of cancer increases...
May 2018: Nature
https://www.readbyqxmd.com/read/29755107/kai1-cd82-genetically-engineered-endothelial-progenitor-cells-inhibit-metastasis-of-human-nasopharyngeal-carcinoma-in-a-mouse-model
#5
Gengming Wang, Lei Zhang, Yan Zhou, Qian Sun, Hongbo Xu, Feng Cai, Ping Xiang, Zhendong Chen, Hao Jiang
BACKGROUND Endothelial progenitor cells (EPCs) are regarded as promising targeted vectors for delivering therapeutic genes or agents in cancer therapy. The purpose of this study was to investigate the role of intravenously administered KAI1/CD82 genetically transduced EPCs in the tumorigenesis and metastasis of nasopharyngeal carcinoma (NPC). MATERIAL AND METHODS EPCs were isolated from human umbilical cord blood, expanded in culture, and stably transduced with lentiviral vectors expressing KAI1/CD82. The KAI1/CD82 EPCs were injected intravenously into nude mice bearing human NPC xenografts...
May 14, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29749381/effect-of-bmi1-over-expression-on-gene-expression-in-adult-and-embryonic-murine-neural-stem-cells
#6
Mythily Ganapathi, Nathan C Boles, Carol Charniga, Steven Lotz, Melissa Campbell, Sally Temple, Randall H Morse
The ability of isolated neural stem cells (NSCs) to proliferate as neurospheres is indicative of their competence as stem cells, and depends critically on the polycomb group (PcG) member Bmi1: knockdown of Bmi1 results in defective proliferation and self-renewal of isolated NSCs, whereas overexpression of Bmi1 enhances these properties. Here we report genome-wide changes in gene expression in embryonic and adult NSCs (eNSCs and aNSCs) caused by overexpression of Bmi1. We find that genes whose expression is altered by perturbations in Bmi1 levels in NSCs are mostly distinct from those affected in other multipotent stem/progenitor cells, such as those from liver and lung, aside from a small core of common targets that is enriched for genes associated with cell migration and mobility...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29745251/amd3100-ameliorates-cigarette-smoke-induced-emphysema-like-manifestations-in-mice
#7
Daria Barwinska, Houssam Oueini, Christophe Poirier, Marjorie E Albrecht, Natalia V Bogatcheva, Matthew J Justice, Jacob Saliba, Kelly S Schweitzer, Hal E Broxmeyer, Keith L March, Irina Petrache
We have shown that cigarette smoke (CS)-induced pulmonary emphysema-like manifestations are preceded by marked suppression of the number and function of bone marrow hematopoietic progenitor cells (HPC). To investigate if a limited availability of HPC may contribute to CS-induced lung injury, we used an FDA-approved antagonist of the interactions of SDF-1 with its receptor CXCR4 to promote intermittent HPC mobilization and tested its ability to limit emphysema-like injury following chronic CS. We administered AMD3100 (5mg/kg) to mice during a chronic CS exposure protocol of up to 24 weeks...
May 10, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29740790/identification-of-inhibitors-synergizing-gemcitabine-sensitivity-in-the-squamous-subtype-of-pancreatic-ductal-adenocarcinoma-pdac
#8
Jia Lin Er, Pei Ni Goh, Chen Yuan Lee, Ying Jie Tan, Ling-Wei Hii, Chun Wai Mai, Felicia Fei-Lei Chung, Chee-Onn Leong
Pancreatic adenocarcinoma (PDAC) is a highly aggressive cancer with a high chance of recurrence, limited treatment options, and poor prognosis. A recent study has classified pancreatic cancers into four molecular subtypes: (1) squamous, (2) immunogenic, (3) pancreatic progenitor and (4) aberrantly differentiated endocrine exocrine. Among all the subtypes, the squamous subtype has the worst prognosis. This study aims to utilize large scale genomic datasets and computational systems biology to identify potential drugs targeting the squamous subtype of PDAC through combination therapy...
May 8, 2018: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/29722022/an-st2-dependent-role-of-bone-marrow-derived-group-2-innate-lymphoid-cells-in-pulmonary-fibrosis
#9
Yuyue Zhao, Francina Gonzalez De Los Santos, Zhe Wu, Tianju Liu, Sem H Phan
Recent evidence supports that bone marrow (BM)-derived hematopoietic progenitor cells play an important role in lung injury and fibrosis. While these cells give rise to multiple cell types, the ST2 (Il1rl1)-expressing group 2 innate lymphoid cells (ILC2) derived from BM progenitors have been implicated in tissue repair and remodeling, including in lung fibrosis. To further investigate the precise role of BM-derived ILC2 in the pathogenesis of fibrotic lung disease their importance in the bleomycin-induced lung fibrosis model was evaluated by analyzing the effects of selective ST2 deficiency in the BM compartment...
May 3, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29705244/matrix-protein-tenascin-c-expands-and-reversibly-blocks-maturation-of-murine-eosinophil-progenitors
#10
Ton C Doan, Brian M Jeong, Mackenzie E Coden, Lucas F Loffredo, Swati Bhattacharyya, Sergio E Chiarella, John Varga, Hiam Abdala-Valencia, Sergejs Berdnikovs
We show that Tenascin-C, an asthma-associated extracellular matrix glycoprotein, promotes hematopoietic progenitors and suppresses the IL-5-driven maturation of murine lung eosinophils. The extracellular matrix's regulation of in situ hematopoiesis has significant implications for targeting tissue eosinophils.
April 26, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29694892/cell-autonomous-and-non-cell-autonomous-regulation-of-smc-progenitors-in-pulmonary-hypertension
#11
Abdul Q Sheikh, Fatima Zahra Saddouk, Aglaia Ntokou, Renata Mazurek, Daniel M Greif
Pulmonary hypertension is a devastating disease characterized by excessive vascular muscularization. We previously demonstrated primed platelet-derived growth factor receptor β+ (PDGFR-β+ )/smooth muscle cell (SMC) marker+ progenitors at the muscular-unmuscular arteriole border in the normal lung, and in hypoxia-induced pulmonary hypertension, a single primed cell migrates distally and expands clonally, giving rise to most of the pathological smooth muscle coating of small arterioles. Little is known regarding the molecular mechanisms underlying this process...
April 24, 2018: Cell Reports
https://www.readbyqxmd.com/read/29684311/tfam-is-required-for-maturation-of-the-fetal-and-adult-intestinal-epithelium
#12
Manasa Srivillibhuthur, Bailey N Warder, Natalie H Toke, Pooja P Shah, Qiang Feng, Nan Gao, Edward M Bonder, Michael P Verzi
During development, the embryo transitions from a metabolism favoring glycolysis to a metabolism favoring mitochondrial respiration. How metabolic shifts regulate developmental processes, or how developmental processes regulate metabolic shifts, remains unclear. To test the requirement of mitochondrial function in developing endoderm-derived tissues, we genetically inactivated the mitochondrial transcription factor, Tfam, using the Shh-Cre driver. Tfam mutants did not survive postnatally, exhibiting defects in lung development...
April 20, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29656941/submucosal-gland-myoepithelial-cells-are-reserve-stem-cells-that-can-regenerate-mouse-tracheal-epithelium
#13
Thomas J Lynch, Preston J Anderson, Pavana G Rotti, Scott R Tyler, Adrianne K Crooke, Soon H Choi, Daniel T Montoro, Carolyn L Silverman, Weam Shahin, Rui Zhao, Chandler W Jensen-Cody, Andrea Adamcakova-Dodd, T Idil Apak Evans, Weiliang Xie, Yulong Zhang, Hongmei Mou, B Paul Herring, Peter S Thorne, Jayaraj Rajagopal, Charles Yeaman, Kalpaj R Parekh, John F Engelhardt
The mouse trachea is thought to contain two distinct stem cell compartments that contribute to airway repair-basal cells in the surface airway epithelium (SAE) and an unknown submucosal gland (SMG) cell type. Whether a lineage relationship exists between these two stem cell compartments remains unclear. Using lineage tracing of glandular myoepithelial cells (MECs), we demonstrate that MECs can give rise to seven cell types of the SAE and SMGs following severe airway injury. MECs progressively adopted a basal cell phenotype on the SAE and established lasting progenitors capable of further regeneration following reinjury...
May 3, 2018: Cell Stem Cell
https://www.readbyqxmd.com/read/29625013/successful-establishment-of-primary-type-2-alveolar-epithelium-with-3d-organotypic-co-culture
#14
Jennifer M S Sucre, Christopher S Jetter, Holli Loomans, Janice Williams, Erin J Plosa, John T Benjamin, Lisa R Young, Jonathan A Kropski, Carla L Calvi, Seunghyi Kook, Ping Wang, Linda Gleaves, Adel Eskaros, Laura Goetzl, Timothy S Blackwell, Susan H Guttentag, Andries Zijlstra
Alveolar type 2 (AT2) epithelial cells are uniquely specialized to produce surfactant in the lung and act as progenitor cells in the process of repair after lung injury. AT2 cell injury has been implicated in several lung diseases, including idiopathic pulmonary fibrosis and bronchopulmonary dysplasia. The inability to maintain primary AT2 cells in culture has been a significant barrier in the investigation of pulmonary biology. We have addressed this knowledge gap by developing a 3-dimensional organotypic co-culture using primary human fetal AT2 cells and pulmonary fibroblasts...
April 6, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29607186/stem-cell-therapies-for-chronic-obstructive-pulmonary-disease-current-status-of-pre-clinical-studies-and-clinical-trials
#15
REVIEW
Zhongwei Sun, Feng Li, Xin Zhou, Kian Fan Chung, Wen Wang, Jialun Wang
Chronic obstructive pulmonary disease (COPD) is a respiratory disease that has a major impact worldwide. The currently-available drugs mainly focus on relieving the symptoms of COPD patients. Novel regenerative therapeutic approaches have been investigated with the aim of repairing or replacing the injured functional structures of the respiratory system. We summarized the progress made by regenerative therapies for COPD by analyzing results from both pre-clinical studies and completed clinical trials. These approaches include the application of exogenous stem cells or small molecules to stimulate the regeneration by endogenous lung stem/progenitor cells...
February 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29599080/exosomes-from-endothelial-progenitor-cells-improve-the-outcome-of-a-murine-model-of-sepsis
#16
Yue Zhou, Pengfei Li, Andrew J Goodwin, James A Cook, Perry V Halushka, Eugene Chang, Hongkuan Fan
Microvascular dysfunction leads to multi-organ failure and mortality in sepsis. Our previous studies demonstrated that administration of exogenous endothelial progenitor cells (EPCs) confers protection in sepsis as evidenced by reduced vascular leakage, improved organ function, and increased survival. We hypothesize that EPCs protect the microvasculature through the exosomes-mediated transfer of microRNAs (miRNAs). Mice were rendered septic by cecal ligation and puncture (CLP), and EPC exosomes were administered intravenously at 4 hr after CLP...
February 27, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29588376/trrap-is-a-central-regulator-of-human-multiciliated-cell-formation
#17
Zhao Wang, Lindsey W Plasschaert, Shivani Aryal, Nicole A Renaud, Zinger Yang, Rayman Choo-Wing, Angelica D Pessotti, Nathaniel D Kirkpatrick, Nadire R Cochran, Walter Carbone, Rob Maher, Alicia Lindeman, Carsten Russ, John Reece-Hoyes, Gregory McAllister, Gregory R Hoffman, Guglielmo Roma, Aron B Jaffe
The multiciliated cell (MCC) is an evolutionarily conserved cell type, which in vertebrates functions to promote directional fluid flow across epithelial tissues. In the conducting airway, MCCs are generated by basal stem/progenitor cells and act in concert with secretory cells to perform mucociliary clearance to expel pathogens from the lung. Studies in multiple systems, including Xenopus laevis epidermis, murine trachea, and zebrafish kidney, have uncovered a transcriptional network that regulates multiple steps of multiciliogenesis, ultimately leading to an MCC with hundreds of motile cilia extended from their apical surface, which beat in a coordinated fashion...
March 27, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29587145/spatial-temporal-lineage-restrictions-of-embryonic-p63-progenitors-establish-distinct-stem-cell-pools-in-adult-airways
#18
Ying Yang, Paul Riccio, Michael Schotsaert, Munemasa Mori, Jining Lu, Dong-Kee Lee, Adolfo García-Sastre, Jianming Xu, Wellington V Cardoso
Basal cells (BCs) are p63-expressing multipotent progenitors of skin, tracheoesophageal and urinary tracts. p63 is abundant in developing airways; however, it remains largely unclear how embryonic p63+ cells contribute to the developing and postnatal respiratory tract epithelium, and ultimately how they relate to adult BCs. Using lineage-tracing and functional approaches in vivo, we show that p63+ cells arising from the lung primordium are initially multipotent progenitors of airway and alveolar lineages but later become restricted proximally to generate the tracheal adult stem cell pool...
March 26, 2018: Developmental Cell
https://www.readbyqxmd.com/read/29568483/transplantation-of-endothelial-progenitor-cells-attenuated-paraquat-induced-acute-lung-injury-via-mir-141-3p-notch-nrf2-axis
#19
Yan Jin, Wei Liu, Xiaowei Liu, Tao Ma, Chen Yang, Quan Cai, Zhi Liu
Background: Paraquat (PQ) presents with high toxicity for humans and animals, and the lungs become the main target organ by the poisoning of PQ leading to acute lung injury. Endothelial progenitor cells (EPCs) were proved to have the repair function on acute lung injury (ALI). We aimed to invatigate the underlying mechanism of EPCs in PQ-induced ALI involving miR-141-3p. Methods: Endothelial progenitor cells were isolated from peripheral blood of C57BL/6J mice and identified by flow cytometry...
2018: Cell & Bioscience
https://www.readbyqxmd.com/read/29565453/serum-microrna-139-5p-is-downregulated-in-lung-cancer-patients-with-lytic-bone-metastasis
#20
Song Xu, Fan Yang, Renwang Liu, Xiongfei Li, Haiyang Fan, Jinghao Liu, Sen Wei, Gang Chen, Jun Chen, Yurong Da
Bone remodeling can be interrupted by tumor cells which leads to an inappropriate balance of osteoblasts and osteoclasts. As the progenitors of osteoblasts, mesenchymal stem cells (MSCs) have been reported to exhibit an abnormal osteogenic differentiation potential in some cancer‑related bone lesions. However, the evidence is very limited in terms of the biological alterations of MSCs in the bone metastasis of non‑small cell lung cancers (NSCLC). We investigated the expression and function of miR‑139‑5p in MSC osteogenic differentiation in vitro in normal and NSCLC-exposed condition...
May 2018: Oncology Reports
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