PMID- 38294633 OWN - NLM STAT- Publisher LR - 20240131 IS - 1573-4994 (Electronic) IS - 1053-0509 (Linking) DP - 2024 Jan 31 TI - A Multiplex Assay to Simultaneously Monitor Apoptosis and Necrosis Using the Cellaca(R) PLX Image Cytometer. LID - 10.1007/s10895-024-03590-3 [doi] AB - Apoptosis is the programmed cell death pathway that is critical for maintaining homeostasis, in which cancer cells can evade to ensure survival. For pharmaceutical drug discovery, it is important to characterize and compare different cancer therapeutics (i.e., small molecules, antibody drugs, cell therapies) that can initiate the process of apoptosis, enabling the identification of potential therapeutic candidates. In this work, we developed and demonstrated a multiplex detection method for monitoring apoptosis and necrosis with Annexin V, Caspase-3, and Propidium Iodide (PI) using the Cellaca(R) PLX Image Cytometer (Revvity Health Sciences, Inc., Lawrence, MA). First, apoptosis was induced in Jurkat and K562 cell lines with staurosporine over the course of 24 h, where apoptosis and necrosis were assessed at 0, 1, 1.5, 2, 4, 20, and 24 h timepoints. Samples were stained with Hoechst 33342 (total dye), Annexin V-APC (early-stage apoptosis), Caspase-3 488 (late-stage apoptosis), and PI (necrosis) at each timepoint and evaluated using image cytometry. Results showed that apoptotic factors and cascades were successfully detected along the pathway from early- to late-stage apoptosis, and ultimately necrosis. A clear trend was observed analyzing apoptotic and necrotic populations during the first 1.5 h, showing differences of up to ~15% in single Annexin V+ and Caspase-3+ populations in treated Jurkat cells, however, a significant increase in double positive apoptotic/necrotic cells for Annexin V+PI+ and Capase-3+PI+ was not observed until 20 h. Upon further analysis between apoptotic populations only, Annexin V+ only populations were higher than Caspase-3+ only populations by up to ~20% between 0 and 1.5 h. Conversely, K562 cells did not exhibit a notable change in apoptotic and necrotic populations due to low sensitivity to staurosporine. The proposed image cytometric detection method may provide an effective and efficient tool for rapid and reliable simultaneous detection of early- late-stage apoptosis, and necrosis. Therefore, allowing researchers to better characterize and screen potential cancer therapeutic drug candidates for their treatment efficacy in a higher throughput manner. CI - (c) 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Pierce, Mackenzie AU - Pierce M AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Huang, Yongyang AU - Huang Y AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Lin, Allen AU - Lin A AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Franco Nitta, Carolina AU - Franco Nitta C AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Kuksin, Dmitry AU - Kuksin D AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Lin, Bo AU - Lin B AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. FAU - Chan, Leo Li-Ying AU - Chan LL AD - Department of Advanced Technology R&D, Revvity Health Sciences, Inc., 360 Merrimack St., Suite 200, Lawrence, MA, 01843, USA. leo.chan@revvity.com. LA - eng PT - Journal Article DEP - 20240131 PL - Netherlands TA - J Fluoresc JT - Journal of fluorescence JID - 9201341 SB - IM OTO - NOTNLM OT - Annexin OT - Apoptosis OT - Caspase OT - Cellaca(R) PLX OT - Image cytometry OT - Necrosis EDAT- 2024/01/31 12:42 MHDA- 2024/01/31 12:42 CRDT- 2024/01/31 11:15 PHST- 2023/12/11 00:00 [received] PHST- 2024/01/15 00:00 [accepted] PHST- 2024/01/31 12:42 [medline] PHST- 2024/01/31 12:42 [pubmed] PHST- 2024/01/31 11:15 [entrez] AID - 10.1007/s10895-024-03590-3 [pii] AID - 10.1007/s10895-024-03590-3 [doi] PST - aheadofprint SO - J Fluoresc. 2024 Jan 31. doi: 10.1007/s10895-024-03590-3.