PMID- 28837780 OWN - NLM STAT- MEDLINE DCOM- 20181120 LR - 20191210 IS - 2472-6311 (Electronic) IS - 2472-6303 (Print) IS - 2472-6303 (Linking) VI - 22 IP - 6 DP - 2017 Dec TI - Development of MAST: A Microscopy-Based Antimicrobial Susceptibility Testing Platform. PG - 662-674 LID - 10.1177/2472630317727721 [doi] AB - Antibiotic resistance is compromising our ability to treat bacterial infections. Clinical microbiology laboratories guide appropriate treatment through antimicrobial susceptibility testing (AST) of patient bacterial isolates. However, increasingly, pathogens are developing resistance to a broad range of antimicrobials, requiring AST of alternative agents for which no commercially available testing methods are available. Therefore, there exists a significant AST testing gap in which current methodologies cannot adequately address the need for rapid results in the face of unpredictable susceptibility profiles. To address this gap, we developed a multicomponent, microscopy-based AST (MAST) platform capable of AST determinations after only a 2 h incubation. MAST consists of a solid-phase microwell growth surface in a 384-well plate format, inkjet printing-based application of both antimicrobials and bacteria at any desired concentrations, automated microscopic imaging of bacterial replication, and a deep learning approach for automated image classification and determination of antimicrobial minimal inhibitory concentrations (MICs). In evaluating a susceptible strain set, 95.8% were within +/-1 and 99.4% were within +/-2, twofold dilutions, respectively, of reference broth microdilution MIC values. Most (98.3%) of the results were in categorical agreement. We conclude that MAST offers promise for rapid, accurate, and flexible AST to help address the antimicrobial testing gap. FAU - Smith, Kenneth P AU - Smith KP AD - 1 Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, USA. FAU - Richmond, David L AU - Richmond DL AD - 2 Image and Data Analysis Core, Harvard Medical School, Boston, MA, USA. FAU - Brennan-Krohn, Thea AU - Brennan-Krohn T AD - 1 Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, USA. AD - 3 Division of Infectious Diseases, Boston Children's Hospital, Boston, MA, USA. FAU - Elliott, Hunter L AU - Elliott HL AD - 2 Image and Data Analysis Core, Harvard Medical School, Boston, MA, USA. FAU - Kirby, James E AU - Kirby JE AD - 1 Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, USA. LA - eng GR - T32 AI007061/AI/NIAID NIH HHS/United States GR - T32 HD055148/HD/NICHD NIH HHS/United States GR - UL1 TR001102/TR/NCATS NIH HHS/United States PT - Evaluation Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20170824 PL - United States TA - SLAS Technol JT - SLAS technology JID - 101697564 RN - 0 (Anti-Infective Agents) SB - IM MH - Anti-Infective Agents/*pharmacology MH - Bacteria/*drug effects MH - Humans MH - Microbial Sensitivity Tests/*methods MH - Microscopy/*methods MH - Time Factors PMC - PMC5744253 MID - NIHMS926022 OTO - NOTNLM OT - antimicrobials OT - inkjet printing OT - machine learning OT - susceptibility testing EDAT- 2017/08/25 06:00 MHDA- 2018/11/21 06:00 PMCR- 2018/12/01 CRDT- 2017/08/25 06:00 PHST- 2017/08/25 06:00 [pubmed] PHST- 2018/11/21 06:00 [medline] PHST- 2017/08/25 06:00 [entrez] PHST- 2018/12/01 00:00 [pmc-release] AID - 10.1177/2472630317727721 [doi] PST - ppublish SO - SLAS Technol. 2017 Dec;22(6):662-674. doi: 10.1177/2472630317727721. Epub 2017 Aug 24.