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Arnett LP, Rana R, Chung WWY, Li X, Abtahi M, Majonis D, Bassan J, Nitz M, Winnik MA. Reagents for Mass Cytometry. Chem Rev 2023; 123:1166-1205. [PMID: 36696538 DOI: 10.1021/acs.chemrev.2c00350] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mass cytometry (cytometry by time-of-flight detection [CyTOF]) is a bioanalytical technique that enables the identification and quantification of diverse features of cellular systems with single-cell resolution. In suspension mass cytometry, cells are stained with stable heavy-atom isotope-tagged reagents, and then the cells are nebulized into an inductively coupled plasma time-of-flight mass spectrometry (ICP-TOF-MS) instrument. In imaging mass cytometry, a pulsed laser is used to ablate ca. 1 μm2 spots of a tissue section. The plume is then transferred to the CyTOF, generating an image of biomarker expression. Similar measurements are possible with multiplexed ion bean imaging (MIBI). The unit mass resolution of the ICP-TOF-MS detector allows for multiparametric analysis of (in principle) up to 130 different parameters. Currently available reagents, however, allow simultaneous measurement of up to 50 biomarkers. As new reagents are developed, the scope of information that can be obtained by mass cytometry continues to increase, particularly due to the development of new small molecule reagents which enable monitoring of active biochemistry at the cellular level. This review summarizes the history and current state of mass cytometry reagent development and elaborates on areas where there is a need for new reagents. Additionally, this review provides guidelines on how new reagents should be tested and how the data should be presented to make them most meaningful to the mass cytometry user community.
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Affiliation(s)
- Loryn P Arnett
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Rahul Rana
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Wilson Wai-Yip Chung
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Xiaochong Li
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mahtab Abtahi
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Daniel Majonis
- Standard BioTools Canada Inc. (formerly Fluidigm Canada Inc.), 1380 Rodick Road, Suite 400, Markham, OntarioL3R 4G5, Canada
| | - Jay Bassan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mark Nitz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
| | - Mitchell A Winnik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada.,Department of Chemical Engineering and Applied Chemistry, 200 College Street, Toronto, OntarioM5S 3E5, Canada
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Rana R, Vellanki RN, Wouters BG, Nitz M. Tellurophene-tagging of teniposide facilitates monitoring by mass cytometry. Chembiochem 2022; 23:e202200284. [PMID: 36040838 DOI: 10.1002/cbic.202200284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/29/2022] [Indexed: 11/11/2022]
Abstract
Target engagement and the biodistribution of exogenously administered small molecules is rarely homogenous. Methods to determine the biodistribution at the cellular level are limited by the ability to detect the small molecule and simultaneously identify the cell types or tissue structures with which it is associated. The highly multiplexed nature of mass cytometry could facilitate these studies provided a heavy isotope label was available in the molecule of interest. Here we show it is possible to append a tellurophene to a known chemotherapeutic, teniposide, to follow this molecule in vivo . A semi-synthetic approach offers an efficient route to the teniposide analogue which is found to have indistinguishable characteristics when compared with the parent teniposide in vitro . Using mass cytometry and imaging mass cytometry we find the teniposide analogue has significant non-specific binding to cells. In vivo the tellurium bearing teniposide produces the expected DNA damage in a PANC-1 xenograft model. The distribution of Te in the tissue is near the limits of detection and further work will be required to characterize the localization of this analogue with respect to cell type distributions.
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Affiliation(s)
- Rahul Rana
- University of Toronto - St George Campus: University of Toronto, Chemistry, CANADA
| | - Ravi N Vellanki
- University Health Network, Departments of Radiation Oncology and Medical Biophysics, CANADA
| | - Bradly G Wouters
- UHN: University Health Network, Departments of Radiation Oncology and Medical Biophysics, CANADA
| | - Mark Nitz
- University of Toronto, Chemistry, 80 St. George Street, M5S3H6, Toronto, CANADA
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Sayers J, Wralstad EC, Raines RT. Semisynthesis of Human Ribonuclease-S. Bioconjug Chem 2020; 32:82-87. [PMID: 33296182 DOI: 10.1021/acs.bioconjchem.0c00557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Since its conception, the ribonuclease S complex (RNase S) has led to historic discoveries in protein chemistry, enzymology, and related fields. Derived by the proteolytic cleavage of a single peptide bond in bovine pancreatic ribonuclease (RNase A), RNase S serves as a convenient and reliable model system for incorporating unlimited functionality into an enzyme. Applications of the RNase S system in biomedicine and biotechnology have, however, been hindered by two shortcomings: (1) the bovine-derived enzyme could elicit an immune response in humans, and (2) the complex is susceptible to dissociation. Here, we have addressed both limitations in the first semisynthesis of an RNase S conjugate derived from human pancreatic ribonuclease and stabilized by a covalent interfragment cross-link. We anticipate that this strategy will enable unprecedented applications of the "RNase-S" system.
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Affiliation(s)
- Jessica Sayers
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Evans C Wralstad
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ronald T Raines
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Nieto-Domínguez M, Nikel PI. Intersecting Xenobiology and Neometabolism To Bring Novel Chemistries to Life. Chembiochem 2020; 21:2551-2571. [PMID: 32274875 DOI: 10.1002/cbic.202000091] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/09/2020] [Indexed: 12/19/2022]
Abstract
The diversity of life relies on a handful of chemical elements (carbon, oxygen, hydrogen, nitrogen, sulfur and phosphorus) as part of essential building blocks; some other atoms are needed to a lesser extent, but most of the remaining elements are excluded from biology. This circumstance limits the scope of biochemical reactions in extant metabolism - yet it offers a phenomenal playground for synthetic biology. Xenobiology aims to bring novel bricks to life that could be exploited for (xeno)metabolite synthesis. In particular, the assembly of novel pathways engineered to handle nonbiological elements (neometabolism) will broaden chemical space beyond the reach of natural evolution. In this review, xeno-elements that could be blended into nature's biosynthetic portfolio are discussed together with their physicochemical properties and tools and strategies to incorporate them into biochemistry. We argue that current bioproduction methods can be revolutionized by bridging xenobiology and neometabolism for the synthesis of new-to-nature molecules, such as organohalides.
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Affiliation(s)
- Manuel Nieto-Domínguez
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Pablo I Nikel
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
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