Label-free concentration of viable neurons, hESCs and cancer cells by means of acoustophoresis.

Summary, in English

Concentration of viable cell populations in suspension is of interest for several clinical and pre-clinical applications. Here, we report that microfluidic acoustophoresis is an effective method to efficiently concentrate live and viable cells with high target purity without any need for protein fluorescent labeling using antibodies or over-expression. We explored the effect of the acoustic field acoustic energy density and systematically used different protocols to induce apoptosis or cell death and then determined the efficiency of live and dead cell separation. We used the breast cancer cell line MCF-7, the mouse neuroblastoma N2a as well as human embryonic stem cells (hESCs) to demonstrate that this method is gentle and can be applied to different cell populations. First, we induced cell death by means of high osmotic shock using a high concentration of PBS (10×), the protein kinase inhibitor staurosporine, high concentrations of dimethyl sulfoxide (DMSO, 10%), and finally, cell starvation. In all the methods employed, we successfully induced cell death and were able to purify and concentrate the remaining live cells using acoustophoresis. Importantly, the concentration of viable cells was not dependent on a specific cell type. Further, we demonstrate that different death inducing stimuli have different effects on the intrinsic cell properties and therefore affect the efficiency of the acoustophoretic separation.

• Författare: Marina Castro Zalis; Juan F Reyes; Per Augustsson; Staffan Holmqvist; Laurent Roybon; Thomas Laurell; Tomas Deierborg
• Avdelning/ar: MultiPark: Multidisciplinary research focused on Parkinson´s disease; NanoLund: Centre for Nanoscience; Oftalmologi, Lund; Institutionen för experimentell medicinsk vetenskap; Avdelningen för Biomedicinsk teknik; IPSC Laboratory for CNS Disease Modeling; BioCARE: Biomarkers in Cancer Medicine improving Health Care, Education and Innovation; Neuroinflammation
• Publiceringsår: 2016-02-26
• Språk: Engelska
• Sidor: 332-340
• Publikation/Tidskrift/Serie: Integrative Biology
• Volym: 8
• Issue: 3
• Länkar: http://www.ncbi.nlm.nih.gov/pubmed/26915333?dopt=Abstract; http://dx.doi.org/10.1039/c5ib00288e
• Dokumenttyp: Artikel i tidskrift
• Förlag: Royal Society of Chemistry
• Ämne: Cancer and Oncology
• Status: Published
• Forskningsgrupp: IPSC Laboratory for CNS Disease Modeling; Neuroinflammation
• ISBN/ISSN/Övrigt: ISSN: 1757-9708