PMID- 20680597 OWN - NLM STAT- MEDLINE DCOM- 20101206 LR - 20100803 IS - 1940-6029 (Electronic) IS - 1064-3745 (Linking) VI - 656 DP - 2010 TI - Applying imaging ToF-SIMS and PCA in differentiation of tissue types. PG - 267-81 LID - 10.1007/978-1-60761-746-4_16 [doi] AB - Time-of-flight secondary ion mass spectrometry (ToF-SIMS) has proven to be an extremely powerful tool for characterizing chemical distributions within biological cells and tissues. However, differentiating biological samples, e.g., cancerous cells from their normal counterparts or benign tissues from malignant tissues, presents unique challenges to ToF-SIMS. Repeatable differentiation of such samples, especially formalin-fixed paraffin-embedded (FFPE) histological specimens, could be used to improve tissue-based diagnosis and aid in prognosis decisions. In this chapter, we describe a strategy for characterizing and differentiating FFPE tissues. ToF-SIMS was used to image deparaffinized FFPE mouse embryos and differentiate tissue types. The robustness and repeatability of the method was determined by analyzing ten tissue slices from three different embryos over a period of 1 month. Using principal component analysis (PCA) to reduce the spectral data generated by ToF-SIMS, histopathologically identified tissue types of the mouse embryos can be differentiated based on the characteristic differences in their mass spectra. FAU - Wu, Ligang AU - Wu L AD - Seagate Technology US, Fremont, CA, USA. FAU - Felton, James S AU - Felton JS FAU - Wu, Kuang Jen J AU - Wu KJ LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Methods Mol Biol JT - Methods in molecular biology (Clifton, N.J.) JID - 9214969 SB - IM MH - Animals MH - Cell Differentiation/physiology MH - Diagnostic Imaging/*methods MH - Embryo, Mammalian/cytology MH - Female MH - Mice MH - Mice, Inbred C57BL MH - Principal Component Analysis MH - Spectrometry, Mass, Secondary Ion/*methods EDAT- 2010/08/04 06:00 MHDA- 2010/12/14 06:00 CRDT- 2010/08/04 06:00 PHST- 2010/08/04 06:00 [entrez] PHST- 2010/08/04 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] AID - 10.1007/978-1-60761-746-4_16 [doi] PST - ppublish SO - Methods Mol Biol. 2010;656:267-81. doi: 10.1007/978-1-60761-746-4_16.