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Biology subjects

Arnone, M.

Publications and source records attributed to Arnone, M..

2 recordsLinked to original sources

Minos transposon-mediated transgenesis in the sea urchin Paracentrotus lividus

In the multitude of suitable experimental systems used for functional studies in the field of developmental biology, the sea urchin plays a central role due to its amenability to various methods, including both transient and stable transgenesis. Among others, transposable elements represent powerful tools for generating stable transgenic specimens, and Minos transposon turned out to be an excellent genetic tool in marine organisms, despite its efficiency being host-dependent. This study provides new evidence for the activity of Minos transposable elements and their stable integration into the genome of the Mediterranean sea urchin Paracentrotus lividus. Using the Minos-based technology coupled with a fully-automated system used for the qPCR screening of the Minos transposon integration, we devised a new pipeline for performing transgenesis-based functional studies in P. lividus.

molecular biology↗

Laminin Receptor Characterization in Acute Myeloid Leukemia: Integrin α7β1 Defines non-Leukemic Stem Cells with Migratory Potential

Interactions with the bone marrow (BM) niche are crucial for promoting self-renewal and survival of acute myeloid leukemia (AML) cells. Consequently, AML cells express a variety of surface receptors to engage with BM niche cells and extracellular matrix proteins, including laminins. Despite the association of laminin receptor expression with stemness in healthy hematopoiesis, the role of laminin receptors in AML remains poorly understood. In this study, we present a comprehensive examination of the laminin receptors integrin 3{beta}1, 6{beta}1, 7{beta}1 and basal cell adhesion molecule (BCAM) in AML. We demonstrate that high mRNA expression of all four laminin receptors correlates with poor overall survival. Notably, integrin 6 and 7 display the highest cell surface presentation among the examined laminin receptors and are higher expressed on AML cells compared to healthy controls. Moreover, our results indicate that integrin 7 expression allows to distinguish between leukemic stem cells (LSC) and non-LSC populations. Specifically, integrin 7 appears to mark non-LSC with enhanced migratory potential. Together, our results confirm the association of high laminin receptor expression with poor prognosis and establish integrin 7 as marker of high migratory non-LSC. O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=128 SRC="FIGDIR/small/587290v1_ufig1.gif" ALT="Figure 1"> View larger version (46K): org.highwire.dtl.DTLVardef@bdcc20org.highwire.dtl.DTLVardef@a45fd2org.highwire.dtl.DTLVardef@18f058forg.highwire.dtl.DTLVardef@b613fc_HPS_FORMAT_FIGEXP M_FIG C_FIG

cancer biology↗