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Liqin Du

Liqin Du

Texas State University, USA

Title: Cell differentiation and differentiation therapy in neuroblastoma

Biography

Biography: Liqin Du

Abstract

Neuroblastoma is the most common solid tumor of infancy and the most common extracranial solid tumor of childhood. Neuroblastoma arises from the neural crest cell precursors of the sympathetic nervous system that fails to complete the process of differentiation, which provides the basis for differentiation therapy, a treatment approach to induce the differentiation of the malignant cells and thereby leading to tumor growth arrest. However, only a limited number of differentiation agents is available to treat neuroblastoma, and resistance to current available differentiation agents is common. This highlights the needs to develop new and more effective differentiation agents. My research goals are to identify novel genes that control neuroblastoma cell differentiation and to discover new differentiation agents from various sources for treating neuroblastoma using a functional high-content screening approach that was recently developed in our group. This approach is based on quantification of the morphological differentiation marker of neuroblastoma cell – neurite outgrowth. By exploiting this screening approach, we have identified a group of novel differentiation-inducing microRNA mimics, synthetic oligonucleotides used to raise intracellular levels of microRNAs. These microRNA mimics induce the differentiation of neuroblastoma cells that are both sensitive and resistant to current differentiation agents, showing the promise of developing microRNA-based differentiation therapeutics to treat neuroblastomas that are resistant to current differentiation agents. Besides the work on microRNAs, we are currently expanding the discovery of novel differentiation agents to other drug sources, including natural products and synthetic small molecule compounds.

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