Imaging Small Molecules in Tissue by Matrix-assisted Laser Desorption/ionization Tandem Mass Spectrometry PDF Download

Author: Timothy J. Garrett
Publisher:
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Languages : en
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Eleven individual phosphatidylcholines and sphingomyelins were identified by MS2 with fragment ions that allow for the identification of the fatty acyl chains and their position on the glycerol backbone. The use of non-conductive and conductive glass microscope slides in connection to ion trap mass analysis was evaluated, and results showed that equivalent data could be obtained on either surface. An artistic airbrush was employed to effectively coat the matrix compound onto tissue sections without the deleterious effects of analyte migration.

Author:
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Languages : en
Pages : 201

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Matrix-assisted laser desorption/ionization(MALDI) mass spectrometry(MS) has been widely used for analysis of biological molecules, especially macromolecules such as proteins. However, MALDI MS has a problem in small molecule (less than 1 kDa) analysis because of the signal saturation by organic matrixes in the low mass region. In imaging MS (IMS), inhomogeneous surface formation due to the co-crystallization process by organic MALDI matrixes limits the spatial resolution of the mass spectral image. Therefore, to make laser desorption/ionization (LDI) MS more suitable for mass spectral profiling and imaging of small molecules directly from raw biological tissues, LDI MS protocols with various alternative assisting materials were developed and applied to many biological systems of interest. Colloidal graphite was used as a matrix for IMS of small molecules for the first time and methodologies for analyses of small metabolites in rat brain tissues, fruits, and plant tissues were developed. With rat brain tissues, the signal enhancement for cerebroside species by colloidal graphite was observed and images of cerebrosides were successfully generated by IMS. In addition, separation of isobaric lipid ions was performed by imaging tandem MS. Directly from Arabidopsis flowers, flavonoids were successfully profiled and heterogeneous distribution of flavonoids in petals was observed for the first time by graphite-assisted LDI(GALDI) IMS.

Author: Lin He
Publisher: Humana Press
ISBN: 9781493913565
Category : Medical
Languages : en
Pages : 0

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Mass Spectroscopy Imaging (MSI) has emerged as an enabling technique to provide insight into the molecular entities within cells, tissues and whole-body samples and to understand inherent complexities within biological metabolomes. In Mass Spectrometry Imaging of Small Molecules: Methods and Protocols, experts in the MSI field present techniques for 2D and 3D visualization and quantification of a wide array of small molecular species present in biologically relevant samples. Chapters provide detailed operational instructions from sample preparation to method selection, from comparative quantification to structural identification and from data collection to visualization of small molecule mapping in complex samples. Written in the successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols and notes on troubleshooting and avoiding known pitfalls. Authoritative and easily accessible, Mass Spectrometry Imaging of Small Molecules: Methods and Protocols aims to bring the rapidly maturing methods of metabolic imaging to life science researchers and to minimize technical intimidation in adapting new technological platforms in biological research.

Author: Bindesh Shrestha
Publisher: Elsevier
ISBN: 0128189991
Category : Science
Languages : en
Pages : 272

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Imaging mass spectrometry (MS) techniques are often utilized without an understanding of their underlying principles, making it difficult for scientists to determine when and how they can exploit MS to visualize their biomolecules of interest. Introduction to Spatial Mapping of Biomolecules by Imaging Mass Spectrometry is an essential reference to help scientists determine the status and strategies of biomolecule analysis, describing its many applications for diverse classes of biomolecules. The book builds a foundation of imaging MS knowledge by introducing ionization sources, sample preparation, visualization guidelines, molecule identification, quantification, data analysis, etc. The second section contains chapters focused on case studies on analyzing a biomolecule class of molecules. Case studies include an introduction/background, and a summary of successful imaging MS studies with illustrative figures and future directions. Provides the introductory foundations of imaging mass spectrometry for those new to the technique Organized by topic to facilitate a quick deep dive, allowing researchers to immediately apply the imaging MS techniques to their work Includes case studies summarizing the imaging MS techniques developed for the class of molecules

Author: Franz Hillenkamp
Publisher: John Wiley & Sons
ISBN: 3527673741
Category : Science
Languages : en
Pages : 447

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This authoritative book on MALDI MS, now finally available in its second edition and edited by one of its inventors, gives an in-depth description of the many different applications, along with a detailed discussion of the technology itself. Thoroughly updated and expanded, with contributions from key players in the field, this unique book provides a comprehensive overview of MALDI MS along with its possibilities and limitations. The initial chapters deal with the technology and the instrumental setup, followed by chapters on the use of MALDI MS in protein research (including proteomics), genomics, glycomics and lipidomics. The option of MALDI-MS for the analysis of polymers and small molecules are also covered in separate chapters, while new to this edition is a section devoted to the interplay of MALDI MS and bioinformatics. A much-needed practical and educational asset for individuals, academic institutions and companies in the field of bioanalytics.

Author: Mitsutoshi Setou
Publisher: Springer Science & Business Media
ISBN: 4431094253
Category : Science
Languages : en
Pages : 252

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Addressing the widespread need for a practical guide to imaging mass spectrometry (IMS), this book presents the protocols of IMS technology. As that technology expands, research groups around the world continue its development. Pharmaceutical companies are using IMS for drug analyses to study pharmacokinetics and medical properties of drugs. Drug research and disease-related biomarker screening are experiencing greater use of this technology, with a concurrent increase in the number of researchers in academia and industry interested in wider applications of IMS. Intended for beginners or those with limited experience with IMS technology, this book provides practical details and instructions needed for immediate know-how, including the preparation of animal tissue samples, the application of a matrix, instrumental operations, and data analysis, among others. By describing the foundations of IMS, this volume contributes to the ongoing development of the field and to progress in human health.

Author: Sangwon Cha
Publisher:
ISBN:
Category :
Languages : en
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Author: Marek Domin
Publisher: Royal Society of Chemistry
ISBN: 1849739269
Category : Science
Languages : en
Pages : 528

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Ambient ionization has emerged as one of the hottest and fastest growing topics in mass spectrometry enabling sample analysis with minimal sample preparation. Introducing the subject and explaining the basic concepts and terminology, this book will provide a comprehensive, unique treatise devoted to the subject. Written by acknowledged experts, there are full descriptions on how new ionization techniques work, with an overview of their strengths, weaknesses and applications. This title will bring the reader right up to date, with both applications and theory, and will be suitable as a tutorial text for those starting in the field from a variety of disciplines.

Author: Zongwei Cai
Publisher: Springer
ISBN: 3642356656
Category : Science
Languages : en
Pages : 220

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MALDI-ToF Mass Spectrometry for Studying Noncovalent Complexes of Biomolecules, by Stefanie Mädler, Elisabetta Boeri Erba, Renato Zenobi Application of MALDI-TOF-Mass Spectrometry to Proteome Analysis Using Stain-Free Gel Electrophoresis, by Iuliana Susnea, Bogdan Bernevic, Michael Wicke, Li Ma, Shuying Liu, Karl Schellander, Michael Przybylski MALDI Mass Spectrometry for Nucleic Acid Analysis, by Xiang Gao, Boon-Huan Tan, Richard J. Sugrue, Kai Tang Determination of Peptide and Protein Disulfide Linkages by MALDI Mass Spectrometry, by Hongmei Yang, Ning Liu, Shuying Liu MALDI In-Source Decay, from Sequencing to Imaging, by Delphine Debois, Nicolas Smargiasso, Kevin Demeure, Daiki Asakawa, Tyler A. Zimmerman, Loïc Quinton, Edwin De Pauw Advances of MALDI-TOF MS in the Analysis of Traditional Chinese Medicines, by Minghua Lu, Zongwei Cai Chemical and Biochemical Applications of MALDI TOF-MS Based on Analyzing the Small Organic Compounds, by Haoyang Wang, Zhixiong Zhao, Yinlong Guo Bioinformatic Analysis of Data Generated from MALDI Mass Spectrometry for Biomarker Discovery, by Zengyou He, Robert Z. Qi, Weichuan Yu

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
By providing both the chemical identity and the spatial organization of each component in biological samples, Imaging Mass Spectrometry (IMS) becomes an emerging tool in clinic and pharmacological study. Most work in IMS has been focused on protein and peptide mapping in biological samples to take advantage of effective analyte ionization in MALDI-MS, and also partially due to the limitation of MALDI-MS in small molecule detection. The focus of my research is to develop novel tools to image spatial distribution of small molecules in biological samples. A surface-based mass spectrometric imaging method, i.e. Desorption/Ionization on Silicon (DIOS), was used for biological surface analysis in the concept-proof investigation. More over, possible proton transferring pathways and impact of local chemical environment have been systematically investigated in the fundamental understanding of ionization mechanism of SALDI-MS. Based on the finding on the SALDI mechanism, a hybrid ionization approach, ME-SALDI has been developed by combing the strength of the conventional MALDI matrix and SALDI, where the improved detection sensitivity with reduced matrix-analyte interference and the improved imaging capability through analysis of mouse brain and heart sections has been demonstrated. In addition, the impact of vacuum stability of matrix in ME-SALDI-IMS applications has been examined. A solvent free, homogenous and reproducible sublimation method has been developed for ionic matrix in ME-SALDI, by which improved vacuum stability and MS detection have been achieved. Furthermore, a new generation of meso-porous oxide substrate was developed as a novel ME-SALDI substrate with a superior storage stability, extended detectable mass range and robust substrate preparation.