PMID- 26150947 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150707 LR - 20201001 IS - 2215-0161 (Print) IS - 2215-0161 (Electronic) IS - 2215-0161 (Linking) VI - 1 DP - 2014 TI - The GCaMP3 - A GFP-based calcium sensor for imaging calcium dynamics in the human malaria parasite Plasmodium falciparum. PG - 151-4 LID - 10.1016/j.mex.2014.08.005 [doi] AB - Calcium (Ca(2+)) signaling pathways are vital for all eukaryotic cells. It is well established that changes in Ca(2+) concentration can modulate several physiological processes such as muscle contraction, neurotransmitter secretion and metabolic regulation (Giacomello et al. (2007) [1], Rizzuto and Pozzan (2003) [2]). In the complex life cycle of Plasmodium falciparum, the causative agent of human malaria, Ca(2+) is involved in the processes of protein secretion, motility, cell invasion, cell progression and parasite egress from red blood cells (RBCs) (Koyama et al. (2009) [3]). The generation of P. falciparum expressing genetically encoded calcium indicators (GECIs) represents an innovation in the study of calcium signaling. This development will provide new insight on calcium homeostasis and signaling in P. falciparum. In addition, these novel transgenic parasites, PfGCaMP3, is a useful tool for screening and identifying new classes of compounds with anti-malarial activity. This represents a possibility of interfering with signaling pathways controlling parasite growth and development. Our new method differs from previous loading protocols (Garcia et al. (1996) [4]; Beraldo et al. (2007) [5]) since:*It provides a novel method for imaging calcium fluctuations in the cytosol of P. falciparum, without signal interference from the host cell and invasive loading protocols.*This technique could also be expanded for imaging calcium in different subcellular compartments.*It will be helpful in the development of novel antimalarials capable of disrupting calcium homeostasis during the intraerythrocytic cycle of P. falciparum. FAU - Borges-Pereira, Lucas AU - Borges-Pereira L AD - Departamento de Fisiologia, Instituto de Biociencias, Universidade de Sao Paulo, Sao Paulo, Brazil ; Departamento de Parasitologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Brazil. FAU - Campos, Bruna R K L AU - Campos BR AD - Departamento de Fisiologia, Instituto de Biociencias, Universidade de Sao Paulo, Sao Paulo, Brazil. FAU - Garcia, Celia R S AU - Garcia CR AD - Departamento de Fisiologia, Instituto de Biociencias, Universidade de Sao Paulo, Sao Paulo, Brazil. LA - eng PT - Journal Article DEP - 20140827 PL - Netherlands TA - MethodsX JT - MethodsX JID - 101639829 PMC - PMC4472923 OTO - NOTNLM OT - Calcium OT - Drug screening OT - GCaMP3 OT - GECIs OT - GFP OT - Malaria OT - Plasmodium falciparum EDAT- 2014/01/01 00:00 MHDA- 2014/01/01 00:01 PMCR- 2014/08/27 CRDT- 2015/07/08 06:00 PHST- 2014/08/06 00:00 [received] PHST- 2014/08/08 00:00 [accepted] PHST- 2015/07/08 06:00 [entrez] PHST- 2014/01/01 00:00 [pubmed] PHST- 2014/01/01 00:01 [medline] PHST- 2014/08/27 00:00 [pmc-release] AID - S2215-0161(14)20066-5 [pii] AID - 10.1016/j.mex.2014.08.005 [doi] PST - epublish SO - MethodsX. 2014 Aug 27;1:151-4. doi: 10.1016/j.mex.2014.08.005. eCollection 2014.