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Rotatori S, Zhang Y, Madden-Hennessey K, Mohammed C, Yang CH, Urbani J, Shrestha P, Pettinelli J, Wang D, Liu X, Zhao Q. Live cell pool and rare cell isolation using Enrich TROVO system. N Biotechnol 2024; 80:12-20. [PMID: 38176452 DOI: 10.1016/j.nbt.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 12/12/2023] [Accepted: 12/30/2023] [Indexed: 01/06/2024]
Abstract
Although several technologies have been developed to isolate cells of interest from a heterogenous sample, clogging and impaired cell viability limit such isolation. We have developed the Enrich TROVO system as a novel, nonfluidic technology to sort live cells. The TROVO system combines imaging-based cell selection and photo-crosslinking of (gelatin methacrylate) gelMA-hydrogel to capture cells. After capture, cells are released by enzymatic digestion of the hydrogel and then retrieved for downstream analysis or further cell culturing. The system can capture cells with a recovery rate of 48% while maintaining 90% viability. Moreover, TROVO can enrich rare cells 506-fold with 93% efficiency using single step isolation from a 1:104 cell mixture, and can also capture one target cell from 1 million cells, reaching an enrichment ratio of 9128. In addition, 100% purity and 49% recovery rate can be achieved by a following negative isolation process. Compared to existing technologies, the TROVO system is clog-resistant, highly biocompatible, and can process a wide range of sample sizes.
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Affiliation(s)
- Stephen Rotatori
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Yichong Zhang
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA.
| | | | - Christina Mohammed
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Chi-Han Yang
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Jordan Urbani
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Prem Shrestha
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Joseph Pettinelli
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Dong Wang
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Xueqi Liu
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA
| | - Qi Zhao
- Enrich Biosystems Inc., 21 Business Park Drive. STE. 4, Branford, CT 06405, USA.
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Shrestha P, Rotatori S, Madden-Hennessey K, Mohammed C, Yang CH, Urbani J, Pettinelli J, Liu X, Zhao Q. Selective expansion of target cells using the Enrich TROVO platform. Biotechniques 2023; 75:56-64. [PMID: 37551835 PMCID: PMC10476488 DOI: 10.2144/btn-2023-0038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023] Open
Abstract
Enriching target cell clones from diverse cell populations is vital for many life science applications. We have developed a novel method to rapidly and efficiently purify specific clonal cell populations from a larger, heterogeneous group using the Enrich TroVo system (Enrich Biosystems Inc., CT, USA). This system takes advantage of microfabrication and optical technologies by utilizing small hydrogel wells to separate desired cell populations and an innovative patching technique to selectively eliminate undesired cells. This method allows the isolation and growth of desired cells with minimal impact on their viability and proliferation. We successfully isolated and expanded clonal cell populations of desired cells using two model cells. Compared with fluorescence-activated cell sorting, Enrich TroVo system offers a promising alternative for isolating of sensitive, adherent cells, that is, patient-derived cells.
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Affiliation(s)
- Prem Shrestha
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Stephen Rotatori
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | | | - Christina Mohammed
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Chi-han Yang
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Jordan Urbani
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Joseph Pettinelli
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Xueqi Liu
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
| | - Qi Zhao
- Enrich Biosystems Inc., 21 Business Park Drive, Suite 4, Branford, CT 06405, USA
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Abstract
A technique for iliac crest bone grafting has been described which allows rapid harvesting of bone with a significant reduction in the pain, scarring, and distortion traditionally associated with this technique.
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Affiliation(s)
- D A Billmire
- Division of Pediatric Plastic Surgery, Children's Hospital Medical Center, Cincinnati, Ohio
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