Silica nanoparticles induced intrinsic apoptosis in neuroblastoma SH-SY5Y cells via CytC/Apaf-1 pathway

Publication date: Available online 30 January 2017 Source:Environmental Toxicology and Pharmacology Author(s): Yanyan Yang, Yongbo Yu, Jiahui Wang, Yanbo Li, Yang Li, Jia Wei, Tong Zheng, Minghua Jin, Zhiwei Sun The present study was to investigate effects of Silica nanoparticles (SiNPs) on nervous system and explore potential mechanisms in human neuroblastoma cells (SH-SY5Y). Cytotoxicity was detected by cell viability and Lactate dehydrogenase (LDH) release. Flow cytometry analysis was applied to assess mitochondrial membrane potential (MMP) loss, intracellular Ca2+ and apoptosis. To clarify the mechanism of SiNPs-induced apoptosis, intrinsic apoptosis-related proteins were detected. Our results showed that SiNPs caused cytotoxicity, cell membrane damage and Ca2+ increase in a dose-dependent manner in SH-SY5Y cells. Both the mitochondrial membrane potential (MMP) loss and potential mitochondria damage resulted in Cyt C release to the cytoplasm. The elevated Cyt C and Apaf1 further triggered intrinsic apoptosis via executive molecular caspase-9 and caspase-3. The present study confirmed that SiNPs induced intrinsic apoptosis in neuroblastoma SH-SY5Y cells via CytC/Apaf-1 pathway and provided a better understanding of the potential toxicity induced by SiNPs on human neurocyte.
Source: Environmental Toxicology and Pharmacology - Category: Environmental Health Source Type: research

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Conditions:   Refractory Cancer;   Refractory Neoplasm;   Cancer Pediatric;   Refractory Tumor;   Pediatric Cancer;   Pediatric Brain Tumor;   Neuroblastoma;   Neuroblastoma Recurrent;   Pediatric Lymphoma;   Pediatric Meningioma Interventions:   Drug: 9-ING-41;   Drug: Irinotecan Sponsors:   Actuate Therapeutics Inc.;   Developmental Therapeutics Consortium Not yet recruiting
Source: - Category: Research Source Type: clinical trials
Conditions:   Neuroblastoma;   Pediatric Solid Tumor Interventions:   Procedure: Tissue collection;   Biological: GVAX vaccine;   Drug: Nivolumab;   Drug: Ipilimumab Sponsor:   Dana-Farber Cancer Institute Not yet recruiting
Source: - Category: Research Source Type: clinical trials
Publication date: Available online 23 January 2020Source: MethodsXAuthor(s): Huira C. Kopera, Roland S. Hilgarth, Tonya L. Kopas, Thomas M. LaniganAbstractAdenovirus-associated virus is a powerful vector system for transducing cells in vivo. It is widely used in animal systems due to high transduction efficiency of non-dividing cells with more than a dozen serotypes that have preferential tissue tropism. The viral genome remains episomal in the nucleus but maintains sustained expression in terminally differentiated cells for several weeks to months. Despite the popularity of recombinant AAV (rAAV) vectors, quality control ...
Source: MethodsX - Category: Science Source Type: research
Publication date: Available online 22 January 2020Source: Journal of Advanced ResearchAuthor(s): Noela Rodríguez-Losada, Javier de la Rosa, María Larriva, Rune Wendelbo, José A. Aguirre, Javier S. Castresana, Santiago J. BallazAbstractAlpha-Synuclein (aSyn) is a chameleon-like protein. Its overexpression and intracellular deposition defines neurodegenerative α-synucleinopathies including Parkinsońs disease. Whether aSyn up-regulation is the cause or the protective reaction to α-synucleinopathies remains unresolved. Remarkably, the accumulation of aSyn is involved in cancer. Here, the neuro...
Source: Journal of Advanced Research - Category: Research Source Type: research
Authors: Oshita J, Okazaki T, Mitsuhara T, Imura T, Nakagawa K, Otsuka T, Kurose T, Tamura T, Abiko M, Takeda M, Kawahara Y, Yuge L, Kurisu K Abstract We analyzed the cell characteristics, neuroprotective, and transplantation effects of human cranial bone-derived mesenchymal stem cells (hcMSCs) in ischemic stroke model rats compared with human iliac bone-derived mesenchymal stem cells (hiMSCs). The expressions of brain-derived neurotrophic factor (BDNF) and vascular endothelial growth factor (VEGF ) as neurotrophic factors were analyzed in both MSCs. hiMSCs or hcMSCs were intravenously administered into ischemic st...
Source: Neurologia Medico-Chirurgica - Category: Neurosurgery Tags: Neurol Med Chir (Tokyo) Source Type: research
CONCLUSIONS: The data suggest that CGF treatment positively affects the cell differentiation, regulating the expression of neuronal markers, the release of growth factors and the neurite length. Taken together these results seem to be promising in the development of new approaches for neural regeneration. PMID: 31957844 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
CONCLUSIONS: Since only one eligible RCT evaluating the use of a continuous cisplatin infusion versus a one-hour bolus cisplatin infusion was found, and that had methodological limitations, no definitive conclusions can be made. It should be noted that 'no evidence of effect', as identified in this review, is not the same as 'evidence of no effect'. For other (combinations of) infusion durations and other platinum analogues no eligible studies were identified. More high-quality research is needed. PMID: 31961948 [PubMed - in process]
Source: Cochrane Database of Systematic Reviews - Category: General Medicine Authors: Tags: Cochrane Database Syst Rev Source Type: research
Conclusion We show that LL in neuroblastoma is a common complication of tumor resection and occurring more often than anticipated. Since, in our study cohort, all cases of LL were self-limiting, we question the indication for invasive therapy besides supporting measures. [...] Georg Thieme Verlag KG Stuttgart · New YorkArticle in Thieme eJournals: Table of contents  |  Abstract  |  Full text
Source: European Journal of Pediatric Surgery - Category: Surgery Authors: Tags: Original Article Source Type: research
SummaryAnaplastic lymphoma kinase (ALK), which belongs to the insulin receptor tyrosine kinase superfamily, plays an important role in nervous system development. Due to chromosomal translocations, point mutations, and gene amplification, constitutively activated ALK has been implicated in a variety of human cancers, including anaplastic large-cell lymphoma (ALCL), non-small cell lung cancer, and neuroblastoma. We evaluated the anti-cancer activity of the ALK inhibitor KRCA-0008 using ALCL cell lines that express NPM (nucleophosmin)-ALK. KRCA-0008 strongly suppressed the proliferation and survival of NPM-ALK-positive ALCL ...
Source: Investigational New Drugs - Category: Drugs & Pharmacology Source Type: research
olo A Abstract Patients with high-risk neuroblastoma (HR-NB) often initially respond to therapy, but afterward they become resistant and disease recurred. Unfortunately, it does not exist one or more specific chromosome defects associated with relapse or refractory NB. Recently, genomic evidence from primary tumors indicated that the distal region of chromosome 6q is loss in HR-NB patients with fatal outcome. We identified a minimal common region of loss of chromosome 6q27 spanning an area of 2.09 Mb by high-resolution DNA copy number data of a small cohort of HR-NB samples carrying 6q loss. This region of loss ha...
Source: Cancer Biology and Therapy - Category: Cancer & Oncology Authors: Tags: Cancer Biol Ther Source Type: research
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