PMID- 35435901 OWN - NLM STAT- MEDLINE DCOM- 20220420 LR - 20220507 IS - 1940-087X (Electronic) IS - 1940-087X (Linking) IP - 181 DP - 2022 Mar 31 TI - High-Throughput Optical Controlling and Recording Calcium Signal in iPSC-Derived Cardiomyocytes for Toxicity Testing and Phenotypic Drug Screening. LID - 10.3791/63175 [doi] AB - Understanding how excitable cells work in health and disease and how that behavior can be altered by small molecules or genetic manipulation is important. Genetically encoded calcium indicators (GECIs) with multiple emission windows can be combined (e.g., for simultaneous observation of distinct subcellular events) or used in extended applications with other light-dependent actuators in excitable cells (e.g., combining genetically encoded optogenetic control with spectrally compatible calcium indicators). Such approaches have been used in primary or stem cell-derived neurons, cardiomyocytes, and pancreatic beta-cells. However, it has been challenging to increase the throughput, or duration of observation, of such approaches due to limitations of the instruments, analysis software, indicator performance, and gene delivery efficiency. Here, a high-performance green GECI, mNeonGreen-GECO (mNG-GECO), and red-shifted GECI, K-GECO, is combined with optogenetic control to achieve all-optical control and visualization of cellular activity in a high-throughput imaging format using a High-Content Imaging System. Applications demonstrating cardiotoxicity testing and phenotypic drug screening with healthy and patient-derived iPSC-CMs are shown. In addition, multi-parametric assessments using combinations of spectral and calcium affinity indicator variants (NIR-GECO, LAR-GECO, and mtGCEPIA or Orai1-G-GECO) are restricted to different cellular compartments are also demonstrated in the iPSC-CM model. FAU - Chang, Yu-Fen AU - Chang YF AD - LumiSTAR Biotechnology, Inc.; yu-fen.chang@lumistar.com.tw. FAU - Su, Wan-Chi AU - Su WC AD - LumiSTAR Biotechnology, Inc. FAU - Su, Chih-Chuan AU - Su CC AD - LumiSTAR Biotechnology, Inc. FAU - Chung, Min-Wen AU - Chung MW AD - LumiSTAR Biotechnology, Inc. FAU - Chang, Jin AU - Chang J AD - NEXEL Co., Ltd. FAU - Li, You-Yi AU - Li YY AD - Institute of Pharmacology, College of Medicine, National Taiwan University. FAU - Kao, Yi-Ju AU - Kao YJ AD - Institute of Pharmacology, College of Medicine, National Taiwan University. FAU - Chen, Wen-Pin AU - Chen WP AD - Institute of Pharmacology, College of Medicine, National Taiwan University. FAU - Daniels, Matthew J AU - Daniels MJ AD - Manchester Heart Centre, Manchester Royal Infirmary, Manchester University NHS Foundation Trust; Division of Cardiovascular Sciences, Manchester Academic Health Sciences Centre, University of Manchester; Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester. LA - eng PT - Journal Article PT - Video-Audio Media DEP - 20220331 PL - United States TA - J Vis Exp JT - Journal of visualized experiments : JoVE JID - 101313252 RN - 0 (Indicators and Reagents) RN - SY7Q814VUP (Calcium) SB - IM MH - *Calcium/analysis MH - Drug Evaluation, Preclinical MH - Humans MH - Indicators and Reagents MH - *Induced Pluripotent Stem Cells/chemistry MH - Myocytes, Cardiac/chemistry MH - Optogenetics EDAT- 2022/04/19 06:00 MHDA- 2022/04/21 06:00 CRDT- 2022/04/18 12:12 PHST- 2022/04/18 12:12 [entrez] PHST- 2022/04/19 06:00 [pubmed] PHST- 2022/04/21 06:00 [medline] AID - 10.3791/63175 [doi] PST - epublish SO - J Vis Exp. 2022 Mar 31;(181). doi: 10.3791/63175.