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Michele De Palma

Cette personne a quitté l’EPFL

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Publications associées (127)

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Molecular Profiling and Functional Analysis of Macrophage-Derived Tumor Extracellular Vesicles

Michele De Palma, Romain Hamelin, Chiara Cianciaruso, Sina Nassiri, Bruno Torchia, Tim Beltraminelli, Florent Philippe Maurice Duval

Extracellular vesicles (EVs), including exosomes, modulate multiple aspects of cancer biology. Tumor-associated macrophages (TAMs) secrete EVs, but their molecular features and functions are poorly characterized. Here, we report methodology for the enrichm ...

2019

FcRgamma activation regulates inflammation-associated squamous carcinogenesis

Michele De Palma

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

Dendritic cell cross-dressing and tumor immunity

Michele De Palma, Amaia Martinez Usatorre

In addition to direct and cross-presentation, dendritic cells (DCs) can present tumor antigens (TAs) to T cells via a hitherto poorly understood mechanism called "cross-dressing." DC cross-dressing involves the acquisition of preformed peptide-major histoc ...

WILEY2022

Imaging-based Optofluidic Biosensors Enabled by All-dielectric metasurfaces

Michele De Palma, Hatice Altug, Chiara Cianciaruso, Yasaman Jahani, Eduardo Romero Arvelo

We present optofluidic label-free biosensors leveraging high quality-factor resonances emanated from bound-states-in-the-continuum and novel data processing. The sensors are based on imaging and offer solutions to remove sophisticated spectroscopy instrume ...

IEEE2021

Reciprocal interactions between endothelial cells and macrophages in angiogenic vascular niches

Michele De Palma, Mario Leonardo Squadrito

The ability of macrophages to promote vascular growth has been associated with the secretion and local delivery of classic proangiogenic factors (e.g., VEGF-A and proteases). More recently, a series of studies have also revealed that physical contact of ma ...

Elsevier Inc2013

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

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

An autologous antigen-agnostic dendritic cell therapy that forgoes antigen loading

Michele De Palma

We developed a method for generating dendritic cell progenitors (DCPs) from hematopoietic stem and progenitor cells isolated from bone marrow or blood. When engineered to express IL-12 and FLT3L, these DCPs reprogram the tumor microenvironment and elicit a ...

Nature Portfolio2024

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

Elusive identities and overlapping phenotypes of proangiogenic myeloid cells in tumors

Michele De Palma

It is now established that bone marrow-derived myeloid cells regulate tumor angiogenesis. This was originally inferred from studies of human tumor biopsies in which a positive correlation was seen between the number of tumor-infiltrating myeloid cells, suc ...

2010

Tweaking DNA of myeloid cells curbs cancer spread

Michele De Palma, Ali Ghasemi

Blood cells called myeloid cells can facilitate metastasis - the spread of a tumour to distant organs. Taming these cells with drugs that alter the chemical structure of their DNA limits metastasis in mice. ...

NATURE PUBLISHING GROUP2020

HRG inhibits tumor growth and metastasis by inducing macrophage polarization and vessel normalization through downregulation of PlGF

Michele De Palma, Mario Leonardo Squadrito, Damya Laoui

Polarization of tumor-associated macrophages (TAMs) to a proangiogenic/immune-suppressive (M2-like) phenotype and abnormal, hypoperfused vessels are hallmarks of malignancy, but their molecular basis and interrelationship remains enigmatic. We report that ...

2011

TIE2-expressing macrophages limit the therapeutic efficacy of the vascular-disrupting agent combretastatin A4 phosphate in mice

Michele De Palma, Daniela Biziato

Vascular-disrupting agents (VDAs) such as combretastatin A4 phosphate (CA4P) selectively disrupt blood vessels in tumors and induce tumor necrosis. However, tumors rapidly repopulate after treatment with such compounds. Here, we show that CA4P-induced vess ...

2011

Biology and therapeutic targeting of tumour-associated macrophages

Michele De Palma, Tim Beltraminelli

Macrophages sustain tumour progression by facilitating angiogenesis, promoting immunosuppression, and enhancing cancer cell invasion and metastasis. They also modulate tumour response to anti-cancer therapy in pre-clinical models. This knowledge has motiva ...

WILEY2020

Disentangling the complexity of tumor-derived extracellular vesicles

Michele De Palma, Tim Beltraminelli, Caleb Ricardo Perez

The tumor microenvironment encompasses an intertwined ensemble of both transformed cancer cells and non-transformed host cells, which together establish a signaling network that regulates tumor progression. By conveying both homo- and heterotypic cell-to-c ...

2021

The interplay between macrophages and angiogenesis in development, tissue injury and regeneration

Michele De Palma, Daniela Biziato

During organ development and remodeling, macrophages support angiogenesis, not only by secreting proangiogenic growth factors and matrix-remodeling proteases, but also by physically interacting with the sprouting vasculature to assist the formation of comp ...

2011

Tie2-expressing monocytes and tumor angiogenesis: regulation by hypoxia and angiopoietin-2

Michele De Palma

Recent findings indicate that tumor-associated macrophages are important drivers of tumor angiogenesis. Here, we review the essential role played by Tie2-expressing monocytes (TEM) in this phenomenon. TEMs are present in human blood and tumors and their el ...

American Association for Cancer Research2007

Medical and Personal Characteristics Can Predict the Risk of Lung Metastasis

Michele De Palma, Nahal Mansouri

Aims: Understanding the correlations between underlying medical and personal characteristics of a patient with cancer and the risk of lung metastasis may improve clinical management and outcomes. We used machine learning methodologies to predict the risk o ...

2023

Engineering dendritic cell vaccines to improve cancer immunotherapy

Michele De Palma, Caleb Ricardo Perez

At the interface between the innate and adaptive immune system, dendritic cells (DCs) play key roles in tumour immunity and hold a hitherto unrealized potential for cancer immunotherapy. Here we review the role of distinct DC subsets in the tumour microenv ...

Springer2019

Targeting LRG1 boosts immunotherapy

Michele De Palma

Vascular normalization therapy has the potential to facilitate drug delivery and lymphocyte infiltration in tumors. Yet, optimal targets and dosage regimens remain elusive. In this issue of Med, O’Connor et al. show that inhibition of LRG1 stabilizes the t ...

2021

Milestones in tumor vascularization and its therapeutic targeting

Michele De Palma, Douglas Hanahan

Research into the mechanisms and manifestations of solid tumor vascularization was launched more than 50 years ago with the proposition and experimental demonstrations that angiogenesis is instrumental for tumor growth and was, therefore, a promising thera ...

Nature Portfolio2024