User profiles for R. Chammas

Roger Chammas

Center for Translational Research in Oncology, ICESP, Faculdade de Medicina da USP
Verified email at usp.br
Cited by 7888

[HTML][HTML] Phosphatidylcholine-derived lipid mediators: The crosstalk between cancer cells and immune cells

…, LNS Andrade, SO Bustos, R Chammas - Frontiers in …, 2022 - frontiersin.org
To become resistant, cancer cells need to activate and maintain molecular defense
mechanisms that depend on an energy trade-off between resistance and essential functions. …

Emerging technologies in extracellular vesicle-based molecular diagnostics

…, ML Samuels, MF Chou, R Chammas… - Expert review of …, 2014 - Taylor & Francis
Extracellular vesicles (EVs), including exosomes and microvesicles, have been shown to carry
a variety of biomacromolecules including mRNA, microRNA and other non-coding RNAs. …

[HTML][HTML] The role of kinin receptors in cancer and therapeutic opportunities

PLN da Costa, P Sirois, IF Tannock, R Chammas - Cancer letters, 2014 - Elsevier
… Our results show that treatment of mice bearing EMT6 sarcoma with the B1R antagonists
R-954 and R-715 resulted in enhanced doxorubicin penetration after 2 h of treatment (Fig. 3). …

[HTML][HTML] Tumor-derived microvesicles modulate the establishment of metastatic melanoma in a phosphatidylserine-dependent manner

LG Lima, R Chammas, RQ Monteiro, MEC Moreira… - Cancer letters, 2009 - Elsevier
Exposure of phosphatidylserine (PS) on cellular membranes and membrane-derived
microvesicles stimulates a number of anti-inflammatory responses involved in malignant processes…

[HTML][HTML] Sialylation of β1 integrins blocks cell adhesion to galectin-3 and protects cells against galectin-3-induced apoptosis

Y Zhuo, R Chammas, SL Bellis - Journal of biological chemistry, 2008 - ASBMB
In previous studies, we determined that β1 integrins from human colon tumors have elevated
levels of α2-6 sialylation, a modification added by β-galactosamide α-2,6-sialyltranferase I (…

Toxoplasma gondii infection reveals a novel regulatory role for galectin-3 in the interface of innate and adaptive immunity

…, AM Loyola, DK Hsu, FT Liu, R Chammas… - The American journal of …, 2006 - Elsevier
In attempts to investigate the role of galectin-3 in innate immunity, we studied galectin-3-deficient
(gal3 −/− ) mice with regard to their response to Toxoplasma gondii infection, which is …

[HTML][HTML] Galectin-3 determines tumor cell adaptive strategies in stressed tumor microenvironments

…, LNDS Andrade, SO Bustos, R Chammas - Frontiers in …, 2016 - frontiersin.org
Galectin-3 is a member of the β-galactoside-binding lectin family, whose expression is often
dysregulated in cancers. While galectin-3 is usually an intracellular protein found in the …

RNA–DNA fibers and polygons with controlled immunorecognition activate RNAi, FRET and transcriptional regulation of NF-κB in human cells

…, M Panigaj, NV Dokholyan, R Chammas… - Nucleic acids …, 2019 - academic.oup.com
Nucleic acid–based assemblies that interact with each other and further communicate with
the cellular machinery in a controlled manner represent a new class of reconfigurable …

The behaviour of masonry walls subjected to fire: Modelling and parametrical studies in the case of hollow burnt-clay bricks

TD Nguyen, F Meftah, R Chammas, A Mebarki - Fire Safety Journal, 2009 - Elsevier
… The load-bearing duration R is the elapsed time for which the wall continues to maintain its
… , ie the load-bearing criterion R is always satisfied for the wall studied in the present paper. …

[HTML][HTML] Emerging autophagy functions shape the tumor microenvironment and play a role in cancer progression-implications for cancer therapy

…, F Antunes, MC Rangel, R Chammas - Frontiers in …, 2020 - frontiersin.org
The tumor microenvironment (TME) is a complex environment where cancer cells reside
and interact with different types of cells, secreted factors, and the extracellular matrix. …