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Malignant ascites has been observed in patients suffering from ovarian, cervical, gastric, colorectal, pancreatic, endometrial, or primary liver cancer. The spheroids are believed to play a major role in chemo resistance and metastasis of the cancer. To ease the discomfort of patients, malignant ascites (MA) is often drained from the abdomen using a procedure called paracentesis. MA retrieved via this minimal invasive procedure is a great source for cancer spheroids, which can be used for testing chemotherapeutic drugs and drug combinations. Herein, the existing workflow is adapted to make concurrent monitoring of drug accumulation, drug response, and drug metabolites feasible using primary spheroids or spheroids grown without a scaffolding matrix. To achieve this, those spheroids are embedded in matrigel, before fixing them with formalin. This makes it possible to process, store, and ship samples at room temperature. This new approach might be used to choose the best targeted therapy for each patient and thereby facilitate personalized medicine.<\/jats:p>","DOI":"10.1002\/pmic.201900146","type":"journal-article","created":{"date-parts":[[2019,8,31]],"date-time":"2019-08-31T20:19:30Z","timestamp":1567282770000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Matrix Assisted Laser Desorption\/Ionization Mass Spectrometry Imaging (MALDI MSI) for Monitoring of Drug Response in Primary Cancer Spheroids"],"prefix":"10.1002","volume":"19","author":[{"given":"Parul","family":"Mittal","sequence":"first","affiliation":[{"name":"Adelaide Proteomics Centre School of Biological Sciences University of Adelaide  Adelaide South Australia 5005 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zoe K","family":"Price","sequence":"additional","affiliation":[{"name":"Discipline of Obstetrics and Gynaecology Adelaide Medical School Robinson Research Institute University of Adelaide  Adelaide South Australia 5000 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Noor A","family":"Lokman","sequence":"additional","affiliation":[{"name":"Discipline of Obstetrics and Gynaecology Adelaide Medical School Robinson Research Institute University of Adelaide  Adelaide South Australia 5000 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carmela","family":"Ricciardelli","sequence":"additional","affiliation":[{"name":"Discipline of Obstetrics and Gynaecology Adelaide Medical School Robinson Research Institute University of Adelaide  Adelaide South Australia 5000 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin K","family":"Oehler","sequence":"additional","affiliation":[{"name":"Discipline of Obstetrics and Gynaecology Adelaide Medical School Robinson Research Institute University of Adelaide  Adelaide South Australia 5000 Australia"},{"name":"Department of Gynaecological Oncology Royal Adelaide Hospital  Adelaide South Australia 5005 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Manuela","family":"Klingler\u2010Hoffmann","sequence":"additional","affiliation":[{"name":"Future Industries Institute, Mawson Lakes Campus University of South Australia  Adelaide South Australia 5095 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8493-2208","authenticated-orcid":false,"given":"Peter","family":"Hoffmann","sequence":"additional","affiliation":[{"name":"Future Industries Institute, Mawson Lakes Campus University of South Australia  Adelaide South Australia 5095 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,10,15]]},"reference":[{"key":"e_1_2_4_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/prca.201700124"},{"key":"e_1_2_4_2_1","first-page":"2","author":"Pinto M.","year":"2011","journal-title":"Front. 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