Publications de Mario Leonardo Squadrito

HTATIP2 regulates arteriogenic activity in monocytes from patients with limb ischemia

Michele De Palma, Mario Leonardo Squadrito

Use of autologous cells isolated from elderly patients with multiple comorbidities may account for the modest efficacy of cell therapy in patients with chronic limb threatening ischemia (CLTI). We aimed to determine whether proarteriogenic monocyte/macroph ...

Amer Soc Clinical Investigation Inc2023

Apelin-driven endothelial cell migration sustains intestinal progenitor cells and tumor growth

Mauro Delorenzi, Stefanie Siegert, Pascale Anderle Pedone, Nadine Fournier, Sina Nassiri, François Renevey, Michele De Palma, Mario Leonardo Squadrito, Simone Ragusa

Stem and progenitor cells residing in the intestinal crypts drive the majority of colorectal cancers (CRCs), yet vascular contribution to this niche remains largely unexplored. Vascular endothelial growth factor A (VEGFA) is a key driver of physiological a ...

Springernature2022

Antiangiogenic immunotherapy suppresses desmoplastic and chemoresistant intestinal tumors in mice

Matthias Lütolf, Mauro Delorenzi, Laureline Wetterwald, Sina Nassiri, Michele De Palma, Mario Leonardo Squadrito, Nikolche Gjorevski, Alan Nicolas Thierry Guichard, Simone Ragusa, Borja Prat Luri

Mutations in APC promote colorectal cancer (CRC) progression through uncontrolled WNT signaling. Patients with desmoplastic CRC have a significantly worse prognosis and do not benefit from chemotherapy, but the mechanisms underlying the differential respon ...

2020

Sequential Bone-Marrow Cell Delivery of VEGFA/S1P Improves Vascularization and Limits Adverse Cardiac Remodeling After Myocardial Infarction in Mice

Michele De Palma, Mario Leonardo Squadrito, Magdalena Maria Zak

Microvascular dysfunction and resulting tissue hypoxia is a major contributor to the pathogenesis and evolution of cardiovascular diseases (CVD). Diverse gene and cell therapies have been proposed to preserve the microvasculature or boost angiogenesis in C ...

MARY ANN LIEBERT, INC2019

Integrin-Mediated Macrophage Adhesion Promotes Lymphovascular Dissemination in Breast Cancer

Sina Nassiri, Michele De Palma, Mario Leonardo Squadrito

Lymphatic vasculature is crucial for metastasis in triple-negative breast cancer (TNBC); however, cellular and molecular drivers controlling lymphovascular metastasis are poorly understood. We define a macrophage-dependent signaling cascade that facilitate ...

2019

Chemotherapy elicits pro-metastatic extracellular vesicles in breast cancer models

Ioanna Keklikoglou, Esra Güç, Michele De Palma, Mario Leonardo Squadrito, Antonino Cassarà, Chiara Cianciaruso, Alan Nicolas Thierry Guichard

Cytotoxic chemotherapy is an effective treatment for invasive breast cancer. However, experimental studies in mice also suggest that chemotherapy has pro-metastatic effects. Primary tumours release extracellular vesicles (EVs), including exosomes, that can ...

2019

Mannose receptor modulates macrophage polarization and allergic inflammation through miR-511-3p

Mario Leonardo Squadrito

2018

EVIR: Chimeric receptors that enhance dendritic cell cross-dressing with tumor antigens

Michele De Palma, Mario Leonardo Squadrito, Chiara Cianciaruso, Sarah Kate Hansen

We describe a lentivirus-encoded chimeric receptor, termed extracellular vesicle (EV)-internalizing receptor (EVIR), which enables the selective uptake of cancer-cell-derived EVs by dendritic cells (DCs). The EVIR enhances DC presentation of EV-associated ...

2018

Engineered antigen presenting cells and uses thereof

Michele De Palma, Mario Leonardo Squadrito

The present invention relates to engineered extra-cellular vesicle internalizing receptors that have the ability to enhance uptake, processing, and presentation to T-cells of tumor-associated antigens by an antigen-presenting cell. It further relates to ve ...

2017

Macrophage-derived Vascular Endothelial Growth Factor C re-directs hematogenous metastatic dissemination by normalizing the tumor vasculature

Michele De Palma, Mario Leonardo Squadrito, Margarita Bartish, Tatjana Wallmann

Wiley2017

Precision targeting of tumor macrophages with a CD206 binding peptide

Michele De Palma, Mario Leonardo Squadrito

Tumor-associated macrophages (TAMs) expressing the multi-ligand endocytic receptor mannose receptor (CD206/MRC1) contribute to tumor immunosuppression, angiogenesis, metastasis, and relapse. Here, we describe a peptide that selectively targets MRC1-express ...

Nature Research2017

miR-511-3p, embedded in the macrophage mannose receptor gene, contributes to intestinal inflammation

Michele De Palma, Mario Leonardo Squadrito

MiR-511-3p is embedded in intron 5 of the CD206/MRC1 gene Mrc1, expressed by macrophage and dendritic cell populations. CD206 and miR-511-3p expression are co-regulated, and their contribution to intestinal inflammation is unclear. We investigated their ro ...

Nature Publishing Group2016

DICERing macrophages for reprogramming TAMs

Michele De Palma, Mario Leonardo Squadrito

Landes Bioscience2016

Suppression of microRNA activity amplifies IFN-γ-induced macrophage activation and promotes anti-tumor immunity

Danielle Thompson, Michele De Palma, Mario Leonardo Squadrito, Damya Laoui, Sarah Kate Hansen

Tumour-associated macrophages (TAMs) largely express an alternatively activated (or M2) phenotype, which entails immunosuppressive and tumour-promoting capabilities. Reprogramming TAMs towards a classically activated (M1) phenotype may thwart tumour-associ ...

Nature Publishing Group2016

Perivascular Macrophages Limit Permeability

Melody Swartz, Witold Waldemar Kilarski, Esra Güç, Michele De Palma, Mario Leonardo Squadrito

Objective-Perivascular cells, including pericytes, macrophages, smooth muscle cells, and other specialized cell types, like podocytes, participate in various aspects of vascular function. However, aside from the well-established roles of smooth muscle cell ...

American Heart Association2016

Guidance molecule SEMA3A restricts tumor growth by differentially regulating the proliferation of tumor-associated macrophages

Michele De Palma, Mario Leonardo Squadrito, Margarita Bartish, Tatjana Wallmann

Accumulation of tumor-associated macrophages (TAM) correlates with malignant progression, immune suppression and poor prognosis. In this study, we defined a critical role for the cell-surface guidance molecule SEMA3A in differential proliferative control o ...

American Association for Cancer Research2016

TRIM33 switches off Ifnb1 gene transcription during the late phase of macrophage activation

Michele De Palma, Mario Leonardo Squadrito

Despite its importance during viral or bacterial infections, transcriptional regulation of the interferon-beta gene (Ifnb1) in activated macrophages is only partially understood. Here we report that TRIM33 deficiency results in high, sustained expression o ...

Nature Publishing Group2015

A niche role for periostin and macrophages in glioblastoma

Michele De Palma, Mario Leonardo Squadrito

Macrophages facilitate tumour progression, but it is unclear whether this capability is influenced by tumour-initiating cells. Glioblastoma stem cells are now shown to secrete periostin, a matrix protein that recruits protumoral macrophages and enhances gl ...

Nature Publishing Group2015

Genetic engineering of hematopoiesis for targeted IFN-α delivery inhibits breast cancer progression

Michele De Palma, Mario Leonardo Squadrito

The immunosuppressive tumor microenvironment represents a major hurdle to cancer therapy. We developed a gene transfer strategy into hematopoietic stem cells (HSCs) to target transgene expression to tumor-infiltrating monocytes/macrophages. Using a combina ...

2014

Cellular magnetic resonance with iron oxide nanoparticles: long-term persistence of SPIO signal in the CNS after transplanted cell death

Michele De Palma, Mario Leonardo Squadrito, Chiara Cianciaruso

Aim: To study the specificity of cellular MRI based on superparamagnetic iron oxide particles (SPIOs), especially within the CNS. Materials & methods: A microglial cell line was engineered for the expression of a suicide gene, the receptor of diphtheria to ...

Future Medicine Ltd2014