Publications associées à Agranulocyte

Inhibition of mitophagy drives macrophage activation and antibacterial defense during sepsis

Mitochondria have emerged as key actors of innate and adaptive immunity. Mitophagy has a pivotal role in cell homeostasis, but its contribution to macrophage functions and host defense remains to be delineated. Here, we showed that lipopolysaccharide (LPS) ...

AMER SOC CLINICAL INVESTIGATION INC2020

Tumor-Promoting Ly-6G(+) SiglecF(high) Cells Are Mature and Long-Lived Neutrophils

Etienne Meylan

Myeloid cells co-expressing the markers CD11b, Ly-6G, and SiglecF can be found in large numbers in murine lung adenocarcinomas and accelerate cancer growth by fostering tumor cell invasion, angiogenesis, and immunosuppression; however, some of these cells' ...

2020

TGR5/Cathepsin E signaling regulates macrophage innate immune activation in liver ischemia and reperfusion injury

Johan Auwerx, Kristina Schoonjans, Qi Wang

The role and underlying mechanism of plasma membrane-bound G protein-coupled bile acid receptor (TGR5) in regulating macrophage innate immune activation during liver ischemia and reperfusion (IR) injury remains largely unclear. Here, we demonstrated that T ...

2021

Myeloid Cells Orchestrate Systemic Immunosuppression, Impairing the Efficacy of Immunotherapy against HPV+ Cancers

Douglas Hanahan, Nadine Fournier, Mélanie Louise Tichet, Melody Swartz, Stephan Wullschleger, Gabriele Galliverti

Cancers induced by human papillomaviruses (HPV) should be responsive to immunotherapy by virtue of expressing the immunogenic oncoproteins E6/E7. However, advanced forms of cervical cancer, driven by HPV, are poorly responsive to immune response-enhancing ...

AMER ASSOC CANCER RESEARCH2020

Lysozyme-Induced Transcriptional Regulation of TNF-alpha Pathway Genes in Cells of the Monocyte Lineage

Paul Joseph Dyson, Romain Hamelin, Florence Armand, Isabelle Mireille Claude Schepens, Gianni Sava

Lysozyme is one of the most important anti-bacterial effectors in the innate immune system of animals. Besides its direct antibacterial enzymatic activity, lysozyme displays other biological properties, pointing toward a significant anti-inflammatory effec ...

2019

Lymphatic vessels regulate immune microenvironments in human and murine melanoma

Melody Swartz, Amanda Waite Lund, Manuel Andreas Fankhauser, Maria Anna Sofia Broggi

Lymphatic remodeling in tumor microenvironments correlates with progression and metastasis, and local lymphatic vessels play complex and poorly understood roles in tumor immunity. Tumor lymphangiogenesis is associated with increased immune suppression, yet ...

Amer Soc Clinical Investigation Inc2016

Selective in vivo visualization of immune-cell infiltration in a mouse model of autoimmune myocarditis by fluorine-19 cardiac magnetic resonance

Ruud van Heeswijk

Background- The goal of this study was to characterize the performance of fluorine-19 ((19)F) cardiac magnetic resonance (CMR) for the specific detection of inflammatory cells in a mouse model of myocarditis. Intravenously administered perfluorocarbons are ...

2013

Regulation of Monocyte Functional Heterogeneity by miR-146a and Relb

Etienne Meylan, Pedro Romero, Martin Etzrodt

Monocytes serve as a central defense system against infection and injury but can also promote pathological inflammatory responses. Considering the evidence that monocytes exist in at least two subsets committed to divergent functions, we investigated wheth ...

Elsevier2012

Transplanted neural stem/precursor cells instruct phagocytes and reduce secondary tissue damage in the injured spinal cord

Michele De Palma, Ferdinando Pucci, Daniela Biziato

Transplanted neural stem/precursor cells possess peculiar therapeutic plasticity and can simultaneously instruct several therapeutic mechanisms in addition to cell replacement. Here, we interrogated the therapeutic plasticity of neural stem/precursor cells ...

2012

Differential Expression of NLRP3 among Hematopoietic Cells

Manuel Raphael Zenger

Although the importance of the NOD-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome in health and disease is well appreciated, a precise characterization of NLRP3 expression is yet undetermined. To this purpose, we generated a knock-in ...

American Association of Immunologists ; Oxford University Press2011

Dysregulation of Allergic Airway Inflammation in the Absence of Microbial Colonization

Nicola Harris, Benjamin John Marsland, Tina Herbst

RATIONALE: The incidence of allergic disorders is increasing in developed countries and has been associated with reduced exposure to microbes and alterations in the commensal bacterial flora. OBJECTIVES: To ascertain the relevance of commensal bacteria upo ...

2011

FcRgamma activation regulates inflammation-associated squamous carcinogenesis

Michele De Palma, Ferdinando Pucci

Chronically activated leukocytes recruited to premalignant tissues functionally contribute to cancer development; however, mechanisms underlying pro- versus anti-tumor programming of neoplastic tissues by immune cells remain obscure. Using the K14-HPV16 mo ...

2010

Angiopoietin-2 regulates gene expression in TIE2-expressing monocytes and augments their inherent proangiogenic functions

Michele De Palma

TIE2-expressing monocytes/macrophages (TEM) are a highly proangiogenic subset of myeloid cells in tumors. Here, we show that circulating human TEMs are already preprogrammed in the circulation to be more angiogenic and express higher levels of such proangi ...

2010

A distinguishing gene signature shared by tumor-infiltrating Tie2-expressing monocytes, blood "resident" monocytes, and embryonic macrophages suggests common functions and developmental relationships

Michele De Palma, Ferdinando Pucci, Daniela Biziato

We previously showed that Tie2-expressing monocytes (TEMs) have nonredundant proangiogenic activity in tumors. Here, we compared the gene expression profile of tumor-infiltrating TEMs with that of tumor-associated macrophages (TAMs), spleen-derived Gr1(+)C ...

2009

Identification of proangiogenic TIE2-expressing monocytes (TEMs) in human peripheral blood and cancer

Michele De Palma, Ferdinando Pucci

Tumor-infiltrating myeloid cells, including tumor-associated macrophages (TAMs), have been implicated in tumor progression. We recently described a lineage of mouse monocytes characterized by expression of the Tie2 angiopoietin receptor and required for th ...

American Society of Hematology2007