PMID- 29443392 OWN - NLM STAT- MEDLINE DCOM- 20191017 LR - 20191017 IS - 1096-9896 (Electronic) IS - 0022-3417 (Print) IS - 0022-3417 (Linking) VI - 245 IP - 1 DP - 2018 May TI - Spatial aspects of oncogenic signalling determine the response to combination therapy in slice explants from Kras-driven lung tumours. PG - 101-113 LID - 10.1002/path.5059 [doi] AB - A key question in precision medicine is how functional heterogeneity in solid tumours informs therapeutic sensitivity. We demonstrate that spatial characteristics of oncogenic signalling and therapy response can be modelled in precision-cut slices from Kras-driven non-small-cell lung cancer with varying histopathologies. Unexpectedly, profiling of in situ tumours demonstrated that signalling stratifies mostly according to histopathology, showing enhanced AKT and SRC activity in adenosquamous carcinoma, and mitogen-activated protein kinase (MAPK) activity in adenocarcinoma. In addition, high intertumour and intratumour variability was detected, particularly of MAPK and mammalian target of rapamycin (mTOR) complex 1 activity. Using short-term treatment of slice explants, we showed that cytotoxic responses to combination MAPK and phosphoinositide 3-kinase-mTOR inhibition correlate with the spatially defined activities of both pathways. Thus, whereas genetic drivers determine histopathology spectra, histopathology-associated and spatially variable signalling activities determine drug sensitivity. Our study is in support of spatial aspects of signalling heterogeneity being considered in clinical diagnostic settings, particularly to guide the selection of drug combinations. (c) 2018 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland. CI - (c) 2018 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland. FAU - Narhi, Katja AU - Narhi K AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Nagaraj, Ashwini S AU - Nagaraj AS AUID- ORCID: 0000-0002-9048-2116 AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Parri, Elina AU - Parri E AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Turkki, Riku AU - Turkki R AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - van Duijn, Petra W AU - van Duijn PW AD - Department of Urology, Josephine Nefkens Institute, Erasmus Medical Center, Rotterdam, The Netherlands. FAU - Hemmes, Annabrita AU - Hemmes A AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Lahtela, Jenni AU - Lahtela J AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Uotinen, Virva AU - Uotinen V AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Mayranpaa, Mikko I AU - Mayranpaa MI AD - Department of Pathology, University of Helsinki, Helsinki, Finland. AD - HUSLAB, Division of Pathology, Helsinki University Hospital, Helsinki, Finland. FAU - Salmenkivi, Kaisa AU - Salmenkivi K AD - HUSLAB, Division of Pathology, Helsinki University Hospital, Helsinki, Finland. FAU - Rasanen, Jari AU - Rasanen J AD - Heart and Lung Centre, Department of General Thoracic and Oesophageal Surgery, Helsinki University Hospital, Helsinki, Finland. FAU - Linder, Nina AU - Linder N AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Trapman, Jan AU - Trapman J AD - Department of Pathology, Josephine Nefkens Institute, Erasmus Medical Centre, Rotterdam, The Netherlands. FAU - Rannikko, Antti AU - Rannikko A AD - Department of Urology, Helsinki University Hospital, Helsinki, Finland. FAU - Kallioniemi, Olli AU - Kallioniemi O AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Af Hallstrom, Taija M AU - Af Hallstrom TM AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. AD - Orion Corporation, Orion Pharma, Espoo, Finland. FAU - Lundin, Johan AU - Lundin J AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. FAU - Sommergruber, Wolfgang AU - Sommergruber W AD - Department of Lead Discovery, Boehringer Ingelheim RCV GmbH & Co. KG, Vienna, Austria. FAU - Anders, Simon AU - Anders S AUID- ORCID: 0000-0003-4868-1805 AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. AD - Centre for Molecular Biology of the University of Heidelberg (ZMBH), Heidelberg, Germany. FAU - Verschuren, Emmy W AU - Verschuren EW AUID- ORCID: 0000-0001-5771-9129 AD - Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180402 PL - England TA - J Pathol JT - The Journal of pathology JID - 0204634 RN - 0 (KRAS protein, human) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 3.6.5.2 (Proto-Oncogene Proteins p21(ras)) SB - IM EIN - J Pathol. 2019 Jan;247(1):147. PMID: 30556602 MH - Animals MH - Carcinogenesis/*genetics MH - Cell Line, Tumor MH - Cell Proliferation/genetics MH - Humans MH - Lung Neoplasms/genetics/metabolism/*pathology MH - Mitogen-Activated Protein Kinases/genetics MH - Pancreatic Neoplasms/genetics/pathology MH - Proto-Oncogene Proteins p21(ras)/*genetics MH - Signal Transduction/*genetics PMC - PMC5947161 OTO - NOTNLM OT - non-small-cell lung cancer OT - oncogenic signalling OT - precision-cut slices OT - prostate cancer OT - spatial heterogeneity OT - targeted therapy EDAT- 2018/02/15 06:00 MHDA- 2019/10/18 06:00 PMCR- 2018/05/11 CRDT- 2018/02/15 06:00 PHST- 2017/09/10 00:00 [received] PHST- 2017/12/21 00:00 [revised] PHST- 2018/02/07 00:00 [accepted] PHST- 2018/02/15 06:00 [pubmed] PHST- 2019/10/18 06:00 [medline] PHST- 2018/02/15 06:00 [entrez] PHST- 2018/05/11 00:00 [pmc-release] AID - PATH5059 [pii] AID - 10.1002/path.5059 [doi] PST - ppublish SO - J Pathol. 2018 May;245(1):101-113. doi: 10.1002/path.5059. Epub 2018 Apr 2.