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Scalable Mesenchymal Stem Cells Enrichment from Bone Marrow Aspirate using Deterministic Lateral Displacement (DLD) Microfluidics Sorting

Tan, N.; Kwek, K. Z.; Teo, K. L.; Loberas, M.; Lee, J. L.; Goh, C. R.; Yang, D.; Oh, S.; Hui, J.; Cool, S.; Wei Hou, H.; Han, J.

2023-05-04 bioengineering
10.1101/2023.05.03.539013 bioRxiv
Show abstract

The growing interest in regenerative medicine has opened new avenues for novel cell therapies using stem cells. Bone Marrow Aspirate (BMA) is an important source of stromal mesenchymal stem cells (MSCs). Conventional MSC harvesting from BMA relies on archaic centrifugation methods, often leading to poor yield due to osmotic stress, high centrifugation force, convoluted workflow, and long experimental time ([~] 2 - 3 hours). To address these issues, we have developed a scalable microfluidic technology based on Deterministic Lateral Displacement (DLD) for MSC isolation. This passive, label-free cell sorting method capitalizes on the morphological differences between MSCs and blood cells (leukocytes and RBCs) for effective separation using an inverted L-shaped pillar array. To improve throughput, we developed a novel portable multiplexed DLD system that can process 2.5 mL of raw BMA in 20 {+/-} 5 minutes, achieving a 2-fold increase in MSC recovery compared to centrifugation methods. Taken together, we envision the developed DLD platform will enable fast and efficient isolation of MSCs from BMA for effective downstream cell therapy in clinical settings.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.