TY - JOUR AB - Matrixassisted laser desorption ionisation imaging mass spectrometry (MALDIMSI) is a rapidly advancing technique for intact tissue analysis that allows simultaneous localisation and quantification of biomolecules in different histological regions of interest. This approach can potentially offer novel insights into tumour microenvironmental (TME) biochemistry. In this study we employed MALDIMSI to evaluate fresh frozen sections of colorectal cancer (CRC) tissue and adjacent healthy mucosa obtained from 12 consenting patients undergoing surgery for confirmed CRC. Specifically, we sought to address three objectives: (1) To identify biochemical differences between different morphological regions within the CRC TME; (2) To characterise the biochemical differences between cancerous and healthy colorectal tissue using MALDIMSI; (3) To determine whether MALDIMSI profiling of tumouradjacent tissue can identify novel metabolic ‘field effects’ associated with cancer. Our results demonstrate that CRC tissue harbours characteristic phospholipid signatures compared with healthy tissue and additionally, different tissue regions within the CRC TME reveal distinct biochemical profiles. Furthermore we observed biochemical differences between tumouradjacent and tumourremote healthy mucosa. We have referred to this ‘field effect’, exhibited by the tumour locale, as canceradjacent metaboplasia (CAM) and this finding builds on the established concept of field cancerisation. AU - Mirnezami,R AU - Spagou,K AU - Vorkas,PA AU - Lewis,MR AU - Kinross,J AU - Want,E AU - Shion,H AU - Goldin,RD AU - Darzi,A AU - Takats,Z AU - Holmes,E AU - Cloarec,O AU - Nicholson,JK DO - 10.1016/j.molonc.2013.08.010 EP - 49 PY - 2014/// SN - 1574-7891 SP - 39 TI - Chemical mapping of the colorectal cancer microenvironment via MALDI imaging mass spectrometry (MALDI-MSI) reveals novel cancer-associated field effects T2 - Molecular Oncology UR - http://dx.doi.org/10.1016/j.molonc.2013.08.010 UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000331510100005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 UR - https://febs.onlinelibrary.wiley.com/doi/full/10.1016/j.molonc.2013.08.010 UR - http://hdl.handle.net/10044/1/77926 VL - 8 ER -