All publications of “Luciana Cavalheiro Marti”

7 results

Chemokines and immunity

Diana Carolina Torres Palomino, Luciana Cavalheiro Marti

DOI: 10.1590/S1679-45082015RB3438

Chemokines are a large family of small cytokines and generally have low molecular weight ranging from 7 to 15kDa. Chemokines and their receptors are able to control the migration and residence of all immune cells. Some chemokines are considered pro-inflammatory, and their release can be induced during an immune response at a site of infection, while others are considered homeostatic and are involved in controlling of cells migration during tissue development or maintenance. The physiologic importance of this family of […]

Current data on IL-17 and Th17 cells and implications for graft versus host disease

Marília Normanton, Luciana Cavalheiro Marti

DOI: 10.1590/S1679-45082013000200019

Human interleukin 17 was first described in 1995 as a new cytokine produced primarily by activated T CD4+ cells that stimulate the secretion of IL-6 and IL-8 by human fibroblasts, besides increasing the expression of ICAM-1. Various authors have reported that IL-17A has a role in the protection of organisms against extracellular bacteria and fungi due to the capacity of IL-17A to recruit neutrophils to the areas of infection, evidencing a pathological role in various models of autoimmune diseases, such […]

Isolation and characterization of mesenchymal stem cells obtained from reusable and disposable bone marrow collection filters

Glaziane Cordeiro de Deus, Marilia Normanton, Nelson Hamerschlak, Andrea Tiemi Kondo, Andreza Alice Feitosa Ribeiro, Anna Carla Goldberg, [...]

DOI: 10.1590/S1679-45082012000300007

Objective:To compare human mesenchymal stem cells obtained from reusable and disposable filters and to characterize them according to the criteria of the International Society of Cellular Therapy.METHODS:Human mesenchymal stem cells were isolated from bone marrow collection reusable sets and compared with those obtained from disposable sets by washing the filters with cell culture media. The isolated cells were characterized according to the criteria of the International Society of Cellular Therapy using flow cytometry, differentiation in vitro, and cytochemistry techniques.RESULTS:Samples were […]

Isolation, cultivation and characterization of CD133+ stem cells from human glioblastoma

Lorena Favaro Pavon, Luciana Cavalheiro Marti, Tatiana Tais Sibov, Liza Aya Mabuchi Miyaki, Suzana Maria Fleury Malheiros, Javier Bustamante Mamani, [...]

DOI: 10.1590/S1679-45082012000200013

Objective:To establish the method of isolation and culture of human glioblastoma neurospheres, and the purification of their stem cells, followed by the process of obtaining tumor subspheres, immunophenotypically characterizing this clonogenic set.METHODS:Through the processing of glioblastoma samples (n=3), the following strategy of action was adopted: (i) establish primary culture of glioblastoma; (ii) isolation and culture of tumor neurospheres; (iii) purify cells that initiate tumors (CD133+) by magnetic separation system (MACS); (iv) obtain tumor subspheres; (v) study the expression of the […]

Evaluation of umbilical cord mesenchymal stem cell labeling with superparamagnetic iron oxide nanoparticles coated with dextran and complexed with Poly-L-lysine

Tatiana Taís Sibov, Liza Aya Mabuchi Miyaki, Javier Bustamante Mamani, Luciana Cavalheiro Marti, Luiz Roberto Sardinha, Lorena Favaro Pavon, [...]

DOI: 10.1590/S1679-45082012000200011

Objective:The objective of this study was to evaluate the effect of the labeling of umbilical cord vein derived mesenchymal stem cells with superparamagnetic iron oxide nanoparticles coated with dextran and complexed to a non-viral transfector agent transfector poly-L-lysine.METHODS:The labeling of mesenchymal stem cells was performed using the superparamagnetic iron oxide nanoparticles/dextran complexed and not complexed to poly-L-lysine. Superparamagnetic iron oxide nanoparticles/dextran was incubated with poly-L-lysine in an ultrasonic sonicator at 37°C for 10 minutes for complex formation superparamagnetic iron oxide […]

From bone marrow transplantation to complex biological therapy

Luciana Cavalheiro Marti, Luiz Vicente Rizzo

DOI: 10.1590/S1679-45082011RB2023

ABSTRACT The major complications after bone marrow transplant are related to opportunistic infections or to graft-versus-host disease. Today, there is a wealth of information associated with bone marrow transplantation and new treatment approaches have been proposed to overcome these complications. Behind these new therapies, such as adoptive transfer of T cells or mesenchymal stem cell infusions, there is significant basic research to support these clinical advances. Most of this knowledge has derived from the development of animal models and intense […]

Immunomodulatory effect of mesenchymal stem cells

Luciana Cavalheiro Marti, Andreza Alice Feitosa Ribeiro, Nelson Hamerschlak

DOI: 10.1590/S1679-45082011RW1843

ABSTRACT Mesenchymal stem cells represent an adult population of nonhematopoietic cells, which can differentiate into a variety of cell types such as osteocytes, chondrocytes, adipocytes, and myocytes. They display immunomodulatory properties that have led to the consideration of their use for the inhibition of immune responses. In this context, mesenchymal stem cells efficiently inhibit maturation, cytokine production, and the T cell stimulatory capacity of dendritic cells. They also can impair proliferation, cytokine secretion, and cytotoxic potential of T lymphocytes. Moreover, […]