PMID- 28292827 OWN - NLM STAT- MEDLINE DCOM- 20170727 LR - 20200225 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 37 IP - 14 DP - 2017 Apr 5 TI - The Glycoside Oleandrin Reduces Glioma Growth with Direct and Indirect Effects on Tumor Cells. PG - 3926-3939 LID - 10.1523/JNEUROSCI.2296-16.2017 [doi] AB - Oleandrin is a glycoside that inhibits the ubiquitous enzyme Na(+)/K(+)-ATPase. In addition to its known effects on cardiac muscle, recent in vitro and in vivo evidence highlighted its potential for anticancer properties. Here, we evaluated for the first time the effect of oleandrin on brain tumors. To this aim, mice were transplanted with human or murine glioma and analyzed for tumor progression upon oleandrin treatment. In both systems, oleandrin impaired glioma development, reduced tumor size, and inhibited cell proliferation. We demonstrated that oleandrin does the following: (1) enhances the brain-derived neurotrophic factor (BDNF) level in the brain; (2) reduces both microglia/macrophage infiltration and CD68 immunoreactivity in the tumor mass; (3) decreases astrogliosis in peritumoral area; and (4) reduces glioma cell infiltration in healthy parenchyma. In BDNF-deficient mice (bdnftm1Jae/J) and in glioma cells silenced for TrkB receptor expression, oleandrin was not effective, indicating a crucial role for BDNF in oleandrin's protective and antitumor functions. In addition, we found that oleandrin increases survival of temozolomide-treated mice. These results encourage the development of oleandrin as possible coadjuvant agent in clinical trials of glioma treatment.SIGNIFICANCE STATEMENT In this work, we paved the road for a new therapeutic approach for the treatment of brain tumors, demonstrating the potential of using the cardioactive glycoside oleandrin as a coadjuvant drug to standard chemotherapeutics such as temozolomide. In murine models of glioma, we demonstrated that oleandrin significantly increased mouse survival and reduced tumor growth both directly on tumor cells and indirectly by promoting an antitumor brain microenvironment with a key protective role played by the neurotrophin brain-derived neurotrophic factor. CI - Copyright (c) 2017 the authors 0270-6474/17/373926-14$15.00/0. FAU - Garofalo, Stefano AU - Garofalo S AD - Department of Physiology and Pharmacology. AD - Istituto di Ricovero e Cura a Carattere Scientifico, Neuromed, 86077 Pozzilli, Italy. FAU - Grimaldi, Alfonso AU - Grimaldi A AD - Department of Physiology and Pharmacology. AD - Center for Life Nanoscience-Istituto Italiano di Tecnologia. FAU - Chece, Giuseppina AU - Chece G AD - Department of Physiology and Pharmacology. FAU - Porzia, Alessandra AU - Porzia A AD - Istituto di Ricovero e Cura a Carattere Scientifico, Neuromed, 86077 Pozzilli, Italy. AD - Department of Molecular Medicine. FAU - Morrone, Stefania AU - Morrone S AD - Department of Experimental Medicine. FAU - Mainiero, Fabrizio AU - Mainiero F AUID- ORCID: 0000-0002-7136-9839 AD - Department of Experimental Medicine. FAU - D'Alessandro, Giuseppina AU - D'Alessandro G AD - Department of Physiology and Pharmacology. AD - Istituto di Ricovero e Cura a Carattere Scientifico, Neuromed, 86077 Pozzilli, Italy. FAU - Esposito, Vincenzo AU - Esposito V AD - Istituto di Ricovero e Cura a Carattere Scientifico, Neuromed, 86077 Pozzilli, Italy. AD - Department of Neurology and Psychiatry. FAU - Cortese, Barbara AU - Cortese B AUID- ORCID: 0000-0001-8667-7255 AD - Consiglio Nazionale delle Ricerche-Nanotec, Institute of Nanotechnology, Soft and Living Matter Laboratory, Department of Physics. FAU - Di Angelantonio, Silvia AU - Di Angelantonio S AD - Department of Physiology and Pharmacology. AD - Center for Life Nanoscience-Istituto Italiano di Tecnologia. FAU - Trettel, Flavia AU - Trettel F AUID- ORCID: 0000-0002-7983-2955 AD - Department of Physiology and Pharmacology, Laboratory Affiliated with Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University, 00185 Rome, Italy. FAU - Limatola, Cristina AU - Limatola C AUID- ORCID: 0000-0001-7504-8197 AD - Istituto di Ricovero e Cura a Carattere Scientifico, Neuromed, 86077 Pozzilli, Italy, cristina.limatola@uniroma1.it. AD - Department of Physiology and Pharmacology, Laboratory Affiliated with Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University, 00185 Rome, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170314 PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Cardenolides) RN - 0 (Cardiac Glycosides) RN - II95UDU7I4 (oleandrin) SB - IM MH - Animals MH - Brain Neoplasms/*drug therapy/pathology MH - Cardenolides/pharmacology/*therapeutic use MH - Cardiac Glycosides/pharmacology/*therapeutic use MH - Cell Line, Tumor MH - Cell Survival/drug effects/physiology MH - Glioma/*drug therapy/pathology MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, SCID MH - Mice, Transgenic MH - Tumor Burden/*drug effects/physiology MH - Xenograft Model Antitumor Assays/methods PMC - PMC6596714 OTO - NOTNLM OT - BDNF OT - apoptosis OT - glioma OT - in vivo OT - invasion OT - oleandrin EDAT- 2017/03/16 06:00 MHDA- 2017/07/28 06:00 PMCR- 2017/10/05 CRDT- 2017/03/16 06:00 PHST- 2016/07/18 00:00 [received] PHST- 2017/02/27 00:00 [revised] PHST- 2017/02/27 00:00 [accepted] PHST- 2017/03/16 06:00 [pubmed] PHST- 2017/07/28 06:00 [medline] PHST- 2017/03/16 06:00 [entrez] PHST- 2017/10/05 00:00 [pmc-release] AID - JNEUROSCI.2296-16.2017 [pii] AID - 2296-16 [pii] AID - 10.1523/JNEUROSCI.2296-16.2017 [doi] PST - ppublish SO - J Neurosci. 2017 Apr 5;37(14):3926-3939. doi: 10.1523/JNEUROSCI.2296-16.2017. Epub 2017 Mar 14.