1
|
Bianco M, Ventura G, Calvano CD, Losito I, Cataldi TRI, Monopoli A. Matrix Selection Strategies for MALDI-TOF MS/MS Characterization of Cyclic Tetrapyrroles in Blood and Food Samples. Molecules 2024; 29:868. [PMID: 38398620 PMCID: PMC10891649 DOI: 10.3390/molecules29040868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/05/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Cyclic tetrapyrrole derivatives such as porphyrins, chlorins, corrins (compounds with a corrin core), and phthalocyanines are a family of molecules containing four pyrrole rings usually coordinating a metal ion (Mg, Cu, Fe, Zn, etc.). Here, we report the characterization of some representative cyclic tetrapyrrole derivatives by MALDI-ToF/ToF MS analyses, including heme b and c, phthalocyanines, and protoporphyrins after proper matrix selection. Both neutral and acidic matrices were evaluated to assess potential demetallation, adduct formation, and fragmentation. While chlorophylls exhibited magnesium demetallation in acidic matrices, cyclic tetrapyrroles with Fe, Zn, Co, Cu, or Ni remained steadfast against demetallation across all conditions. Phthalocyanines and protoporphyrins were also detectable without a matrix using laser desorption ionization (LDI); however, the incorporation of matrices achieved the highest ionization yield, enhanced sensitivity, and negligible fragmentation. Three standard proteins, i.e., myoglobin, hemoglobin, and cytochrome c, were analyzed either intact or enzymatically digested, yielding heme b and heme c ions along with accompanying peptides. Furthermore, we successfully detected and characterized heme b in real samples, including blood, bovine and cod liver, and mussel. As a result, MALDI MS/MS emerged as a powerful tool for straightforward cyclic tetrapyrrole identification, even in highly complex samples. Our work paves the way for a more comprehensive understanding of cyclic tetrapyrroles in biological and industrial settings, including the geochemical field, as these compounds are a source of significant geological and geochemical information in sediments and crude oils.
Collapse
Affiliation(s)
- Mariachiara Bianco
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
| | - Giovanni Ventura
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
| | - Cosima Damiana Calvano
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
- Interdepartmental Research Center (SMART), University of Bari Aldo Moro, 70126 Bari, Italy
| | - Ilario Losito
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
- Interdepartmental Research Center (SMART), University of Bari Aldo Moro, 70126 Bari, Italy
| | - Tommaso R. I. Cataldi
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
- Interdepartmental Research Center (SMART), University of Bari Aldo Moro, 70126 Bari, Italy
| | - Antonio Monopoli
- Department of Chemistry, University of Bari Aldo Moro, 70126 Bari, Italy; (M.B.); (G.V.); (I.L.); (T.R.I.C.)
| |
Collapse
|
2
|
Roux A, Winnard PT, Van Voss MH, Muller L, Jackson SN, Hoffer B, Woods AS, Raman V. MALDI-MSI of lipids in a model of breast cancer brain metastasis provides a surrogate measure of ischemia/hypoxia. Mol Cell Biochem 2023; 478:2567-2580. [PMID: 36884151 DOI: 10.1007/s11010-023-04685-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/20/2023] [Indexed: 03/09/2023]
Abstract
Breast cancer brain metastasis (BCBM) has an incidence of 10-30%. It is incurable and the biological mechanisms that promote its progression remain largely undefined. Consequently, to gain insights into BCBM processes, we have developed a spontaneous mouse model of BCBM and in this study found a 20% penetrance of macro-metastatic brain lesion formation. Considering that lipid metabolism is indispensable to metastatic progression, our goal was the mapping of lipid distributions throughout the metastatic regions of the brain. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) of lipids revealed that, relative to surrounding brain tissue, seven long-chain (13-21 carbons long) fatty acylcarnitines, as well as two phosphatidylcholines, two phosphatidylinositols two diacylglycerols, a long-chain phosphatidylethanolamine, and a long-chain sphingomyelin were highly concentrated in the metastatic brain lesion In broad terms, lipids known to be enriched in brain tissues, such as very long-chain (≥ 22 carbons in length) polyunsaturated fatty acid of phosphatidylcholines, phosphatidylethanolamine, sphingomyelins, sulfatides, phosphatidylinositol phosphates, and galactosylceramides, were not found or only found in trace amounts in the metastatic lesion and instead consistently detected in surrounding brain tissues. The data, from this mouse model, highlights an accumulation of fatty acylcarnitines as possible biological makers of a chaotic inefficient vasculature within the metastasis, resulting in relatively inadequate blood flow and disruption of fatty acid β-oxidation due to ischemia/hypoxia.
Collapse
Affiliation(s)
- Aurelie Roux
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Paul T Winnard
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Marise Heerma Van Voss
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Ludovic Muller
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Shelley N Jackson
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Barry Hoffer
- Case Western Reserve University, Cleveland, OH, USA
| | - Amina S Woods
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA.
- Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.
| | - Venu Raman
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands.
- Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
3
|
Monopoli A, Ventura G, Aloia A, Ciriaco F, Nacci A, Cataldi TRI, Calvano CD. Synthesis and Investigation of Novel CHCA-Derived Matrices for Matrix-Assisted Laser Desorption/Ionization Mass Spectrometric Analysis of Lipids. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27082565. [PMID: 35458772 PMCID: PMC9028824 DOI: 10.3390/molecules27082565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 11/16/2022]
Abstract
A significant area of study and upgrading for increasing sensitivity and general performances of matrix-assisted laser-desorption ionization (MALDI) mass spectrometry (MS) is related to matrix design. Several efforts have been made to address the challenge of low-mass-region interference-free for metabolomics analysis and specifically for lipidomics. To this aim, rationally designed matrices as 4-chloro-α-cyanocinnamic acid (ClCCA) were introduced and reported to provide enhanced analytical performances. We have taken this rational design one step further by developing and optimizing new MALDI matrices with a range of modifications on the CHCA core, involving different functionalities and substituents. Of particular interest was the understanding of the electron-withdrawing (e.g., nitro-) or donating (e.g., methoxy-) effects along with the extent of conjugation on the ionization efficiency. In the present work, ten matrices were designed on a reasonable basis, synthesized, and characterized by NMR and UV spectroscopies and laser desorption ionization. With the assistance of these putative MALDI matrices, samples containing phospholipids (PL), and neutral di-/tri-acylglycerols (DAG, TAG) were investigated using milk, fish, blood, and human plasma extracts. In comparison with CHCA and ClCCA, four of them, viz. [(2E,4E)-2-cyano-5-(4-methoxyphenyl)penta-2,4-dienoic acid] (1), [(2E,4E)-2-cyano-5-(4-nitrophenyl)penta-2,4-dienoic acid] (2), [(E)-2-cyano-3-(6-methoxynaphthalen-2-yl)acrylic acid] (6) and [(E)-2-cyano-3-(naphthalen-2-yl)acrylic acid] (7) displayed good to even excellent performances as MALDI matrices in terms of ionization capability, interference-free spectra, S/N ratio, and reproducibility. Especially compound 7 (cyano naphthyl acrylic acid, CNAA) was the election matrix for PL analysis and matrix 2 (cyano nitrophenyl dienoic acid, CNDA) for neutral lipids such as DAG and TAG in positive ion mode.
Collapse
Affiliation(s)
- Antonio Monopoli
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
- Correspondence: (A.M.); (C.D.C.); Tel.: +39-080-5443589 (A.M.); +39-080-5442018 (C.D.C.); Fax: +39-080-5442026 (A.M. & C.D.C.)
| | - Giovanni Ventura
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
| | - Andrea Aloia
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
| | - Fulvio Ciriaco
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
| | - Angelo Nacci
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
- CNR—Istituto di Chimica dei Composti Organometallici (ICCOM), Bari Section, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Tommaso R. I. Cataldi
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
- Centro Interdipartimentale di Ricerca S.M.A.R.T., Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Cosima D. Calvano
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy; (G.V.); (A.A.); (F.C.); (A.N.); (T.R.I.C.)
- Centro Interdipartimentale di Ricerca S.M.A.R.T., Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
- Correspondence: (A.M.); (C.D.C.); Tel.: +39-080-5443589 (A.M.); +39-080-5442018 (C.D.C.); Fax: +39-080-5442026 (A.M. & C.D.C.)
| |
Collapse
|
4
|
Edwards HM, Sasiene ZJ, Mendis PM, Jackson GP. Structural Characterization of Natural and Synthetic Macrocycles Using Charge-Transfer Dissociation Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:671-680. [PMID: 35195991 DOI: 10.1021/jasms.1c00369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Research in natural products (NPs) has gained interest as drug developers turn to nature to combat problems with drug resistance, drug delivery, and emerging diseases. Whereas NPs offer a tantalizing source of new pharmacologically active compounds, their structural complexity presents a challenge for analytical characterization and organic synthesis. Of particular concern is the characterization of cyclic-, polycyclic-, or macrocyclic compounds. One example of endogenous compounds as inspiration for NP development are cobalamins, like vitamin B12. An example of exogenous NPs is the class of macrolides that includes erythromycin. Both classes of macrocycles feature analogues with a range of modifications on their macrocyclic cores, but because of their cyclic nature, they are generally resistant to fragmentation by collision-induced dissociation (CID). In the present work, charge-transfer dissociation (CTD) was employed, with or without supplemental collisional activation, to produce radical-driven, high-energy fragmentation products of different macrocyclic precursors. With the assistance of collisional activation of CTnoD products, CTD frequently cleaved two covalent bonds within the macrocycle cores to reveal rich, informative spectra that helped identify sites of modification and resolve structural analogues. In a third example of macrocycle fragmentation, CTD enabled an impurity in a biological sample to be characterized as a cyclic polymer of nylon-6,6. In each example, CTD spectra are starkly different from CID and are highly reminiscent of other high-energy fragmentation techniques like extreme ultraviolet dissociative photoionization (XUV-DPI) and electron ionization-induced dissociation (EID). The results indicate that CTD-MS is a useful tool for the characterization of natural and synthetic macrocycles.
Collapse
Affiliation(s)
- Halle M Edwards
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Zachary J Sasiene
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Praneeth M Mendis
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Glen P Jackson
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia 26506, United States
| |
Collapse
|
5
|
Doppleb O, Schwarz RJ, Landa M, Richert C. Efficient Oligomerization of Aromatic Amino Acids Induced by Gaps in Four-Helix Bundles of DNA or RNA. Chemistry 2022; 28:e202104104. [PMID: 35050538 PMCID: PMC9303611 DOI: 10.1002/chem.202104104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Indexed: 11/09/2022]
Abstract
The formation of peptides from amino acids is one of the processes associated with life. Because of the dominant role of translation in extant biology, peptide‐forming processes that are RNA induced are of particular interest. We have previously reported the formation of phosphoramidate‐linked peptido RNAs as the products of spontaneous condensation reactions between ribonucleotides and free amino acids in aqueous solution. We now asked whether four‐helix bundle (4HB) DNA or RNA folding motifs with a single‐ or double‐nucleotide gap next to a 5’‐phosphate can act as reaction sites for phosphoramidate formation. For glycine, this was found to be the case, whereas phenylalanine and tryptophan showed accelerated formation of peptides without a covalent link to the nucleic acid. Free peptides with up to 11 tryptophan or phenylalanine residues were found in precipitates forming in the presence of gap‐containing DNA or RNA 4HBs. Control experiments using motifs with just a nick or primer alone did not have the same effect. Because folded structures with a gap in a double helix are likely products of hybridization of strands formed in statistically controlled oligomerization reactions, our results are interesting in the context of prebiotic scenarios. Independent of a putative role in evolution, our findings suggest that for some aromatic amino acids an RNA‐induced pathway for oligomerization exists that does not have a discernable link to translation.
Collapse
Affiliation(s)
- Olivia Doppleb
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Rainer Joachim Schwarz
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Maria Landa
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Clemens Richert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| |
Collapse
|
6
|
Calvano CD, Bianco M, Losito I, Cataldi TRI. Proteomic Analysisof Food Allergens by MALDI TOF/TOF Mass Spectrometry. Methods Mol Biol 2021; 2178:357-376. [PMID: 33128761 DOI: 10.1007/978-1-0716-0775-6_24] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) is largely recognized as an important tool in the analysis of many biomolecules such as proteins and peptides. The MS analysis of digested peptides to identify a protein or some of its modifications is a key step in proteomics. MALDI-MS is well suited for the peptide mass fingerprinting (PMF) technique, as well as selected fragmentation of various precursors using collisional-induced dissociation (CID) or post-source decay (PSD).In the last few years, MALDI-MS has played a significant role in food chemistry, especially in the detection of food adulterations, characterization of food allergens, and investigation of protein structural modifications induced by various industrial processes that could be an issue in terms of food quality and safety.Here, we present simple extraction protocols of allergenic proteins in food commodities such as milk, egg, hazelnut , and lupin seeds. Classic bottom-up approaches based on Sodium Dodecyl Sulphate (SDS) gel electrophoresis separation followed by in-gel digestion or direct in-solution digestion of whole samples are described. MALDI-MS and MS /MS analyses are discussed along with a comparison of data obtained by using the most widespread matrices for proteomic studies, namely, α-cyano-4-hydroxy-cinnamic acid (CHCA) and α-cyano-4-chloro-cinnamic acid (CClCA). The choice of the most suitable MALDI matrix is fundamental for high-throughput screening of putative food allergens.
Collapse
Affiliation(s)
- Cosima D Calvano
- Centro Interdipartimentale di Ricerca SMART, Università degli Studi di Bari "Aldo Moro", Bari, Italy. .,Dipartimento di Farmacia- Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", Bari, Italy.
| | - Mariachiara Bianco
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", Bari, Italy
| | - Ilario Losito
- Centro Interdipartimentale di Ricerca SMART, Università degli Studi di Bari "Aldo Moro", Bari, Italy.,Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", Bari, Italy
| | - Tommaso R I Cataldi
- Centro Interdipartimentale di Ricerca SMART, Università degli Studi di Bari "Aldo Moro", Bari, Italy.,Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", Bari, Italy
| |
Collapse
|
7
|
Ventura G, Calvano CD, Losito I, Viola A, Cinquepalmi V, Cataldi TRI. In vitro reactions of a cyanocobalamin-cisplatin conjugate with nucleoside monophosphates. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8945. [PMID: 32910479 DOI: 10.1002/rcm.8945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/13/2020] [Accepted: 09/04/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE Cisplatin (CP) is a widely used anticancer drug characterized by toxic side effects that could be alleviated using novel delivery systems including CP prodrugs. The in vitro incubation of a putative prodrug, obtained from cyanocobalamin (CNCbl) and cis-diamminemonochloroplatinum(II) (mCP), with nucleoside monophosphates (NMPs) was investigated. METHODS The in vitro reactions between the putative prodrug CNCbl-mCP and the NMPs of adenosine (AMP), guanosine (GMP), cytidine (CMP) and uridine (UMP) were carried out in slightly acidic water-methanol solutions at 37°C for 24 h. Each sample was examined using reversed-phase liquid chromatography coupled with electrospray ionization in positive ion mode and tandem mass spectrometry (RPLC/ESI-MS/MS) by collision-induced dissociation in a linear ion-trap mass spectrometer. RESULTS Seven adducts were recognized as formed by substitution reactions of the chloride ligand in planar CP. Comparison between observed and theoretical isotopic patterns together with MS/MS fragmentation pathways revealed the presence of single or multiple binding sites depending on the NMP involved. The CNCbl-mCP conjugate was found to interact with N7 or O4 atoms of GMP and UMP, respectively, generating single adducts, while two isomeric adducts were observed for CMP. Finally, AMP gave rise to three isomeric adducts. CONCLUSIONS In agreement with literature data relevant to the interaction between CP and NMPs, the most reactive nucleotides were AMP and GMP. The present RPLC/ESI-MS/MS approach is very promising for investigation of the reactions of CP conjugates with ribonucleotides not only in vitro but also in vivo.
Collapse
Affiliation(s)
- Giovanni Ventura
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| | - Cosima Damiana Calvano
- Centro Interdipartimentale SMART, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| | - Ilario Losito
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
- Centro Interdipartimentale SMART, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| | - Andrea Viola
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| | - Valeria Cinquepalmi
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| | - Tommaso R I Cataldi
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
- Centro Interdipartimentale SMART, Università degli Studi di Bari Aldo Moro, via Orabona 4, Bari, 70126, Italy
| |
Collapse
|
8
|
Kato Y, Hirosawa N, Sakamoto T, Moriguchi T, Takayama J, Xuan M, Okazaki M, Suzuki Y, Hoshi A, Sakamoto Y. Characterization of 6-bromoferulic acid as a novel common-use matrix for matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8636. [PMID: 31659809 DOI: 10.1002/rcm.8636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/08/2019] [Accepted: 10/13/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Ferulic acid (FA) is a standard matrix used for analyzing proteins. In this study, the ability of a halogenated FA to serve as an effective MALDI matrix was investigated. Various halogenated FAs were synthesized, and the characteristics and performance of each were compared with those of the standard matrices α-cyano-4-hydroxycinnamic acid (CHCA) and 2,5-dihydrobenzoic acid (DHBA). METHODS The abilities of 6-bromoferulic acid (6-BFA), ferulic acid (FA), and eight other halogenated FA derivatives to ionize eight synthetic peptides were examined. Absorption measurements, MM2 structure optimizations, and proton affinity (PA) calculations were also performed for 6-BFA and FA. The suitabilities of these compounds as matrices for matrix-assisted laser desorption/ionization (MALDI) for lipids, sugar chains, polymers, cyanocobalamin, synthetic peptides, and tryptic peptides originating from two types of serum proteins were also tested. RESULTS The 6-position of FA was found to be the best site for introducing a bromine because the generated compound allowed facile detection of cyanocobalamin and several peptides. 6-BFA exhibited good sensitivity for large peptides (3-5 kDa) and peptides containing acidic amino acids or proline. 6-BFA was also shown to be a suitable matrix for tandem mass spectrometry (MS/MS) analysis when using MALDI time-of-flight (TOF) mass spectrometry (MS) with a quadrupole ion trap (QIT) system. CONCLUSIONS The properties of 6-BFA as a MALDI matrix differed from those of DHBA and CHCA. 6-BFA appears to be a useful matrix for de novo sequencing using MALDI-QIT-TOF-MS.
Collapse
Affiliation(s)
- Yosuke Kato
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Narumi Hirosawa
- Biomedical Research Center, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama, 350-0495, Japan
| | - Takeshi Sakamoto
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Takeshi Moriguchi
- Department of Liberal Arts, Faculty of Medicine, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama, 350-0495, Japan
| | - Jun Takayama
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Meiyan Xuan
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Mari Okazaki
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Yuko Suzuki
- Biomedical Research Center, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama, 350-0495, Japan
| | - Ayako Hoshi
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Yasushi Sakamoto
- Biomedical Research Center, Saitama Medical University, 38 Morohongo, Moroyama, Iruma-gun, Saitama, 350-0495, Japan
| |
Collapse
|
9
|
Calvano C, Capozzi MA, Punzi A, Farinola GM, Cataldi TRI, Palmisano F. 1,5-Diaminonaphtalene is a Highly Performing Electron-Transfer Secondary-Reaction Matrix for Laser Desorption Ionization Mass Spectrometry of Indolenine-Based Croconaines. ACS OMEGA 2018; 3:17821-17827. [PMID: 31458378 PMCID: PMC6644284 DOI: 10.1021/acsomega.8b02575] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/06/2018] [Indexed: 06/10/2023]
Abstract
Croconaine dyes are appealing molecules synthesized via the condensation of croconic acid and reactive electron-donating aromatic or heterocyclic systems. Here, matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS) investigation of indolenine-based croconaines is presented for the first time. Archetype proton-transfer matrices, such as 2,5-dihydroxybenzoic acid (DHB) and α-cyano-4-hydroxycinnamic acid (CHCA), 9-aminoacridine (9AA) as the protonating/deprotonating matrix, and electron-transfer (ET) secondary-reaction matrices, such as 1,5-diaminonapthalene (DAN) and trans-2-[3-(4-t-butyl-phenyl)-2-methyl-2-propenylidene]malononitrile (DCTB), were investigated. DHB, CHCA, and 9AA generate a mix of odd-electron molecular ions and protonated, sodiated, and potassiated adducts. Among the ET matrices, DAN was found to be capable of directing the ionization process toward the exclusive formation of odd-electron molecular ions M+• without fragmentation. MALDI tandem MS provides useful structural characterization of croconaine dyes, thus making identification very straightforward for all investigated compounds. Interestingly the fragmentation of bromo-containing croconaines revealed, for the first time, the gas-phase formation of a bromime cation [Br]+.
Collapse
Affiliation(s)
- Cosima
D. Calvano
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| | - Maria Annunziata
M. Capozzi
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| | - Angela Punzi
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| | - Gianluca M. Farinola
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| | - Tommaso R. I. Cataldi
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| | - Francesco Palmisano
- Centro
di Ricerca Interdipartimentale SMART, Dipartimento di Chimica and Dipartimento di
Farmacia-Scienze del Farmaco, Università
degli Studi di Bari Aldo Moro, Campus Universitario, Via E. Orabona, 4, 70126 Bari, Italy
| |
Collapse
|
10
|
Ventura G, Nardella MI, Panella A, Arnesano F, Calvano CD, Losito I, Palmisano F, Cataldi TRI. Structural Elucidation of Cisplatin and Hydrated cis-Diammineplatinum(II) Complex Conjugated with Cyanocobalamin by Liquid Chromatography with Electrospray Ionization-Mass Spectrometry and Multistage Mass Spectrometry. ACS OMEGA 2018; 3:12914-12922. [PMID: 31458014 PMCID: PMC6644602 DOI: 10.1021/acsomega.8b01879] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 09/25/2018] [Indexed: 06/09/2023]
Abstract
Pt(II)-based derivatives bearing a cyanocobalamin (CNCbl) unit were synthesized in aqueous solutions, and the reaction mixtures were examined by reversed-phase liquid chromatography with electrospray ionization and linear ion trap mass spectrometry (MS). Isotopic pattern analysis, multistage mass-spectra (MS/MS and MS3) interpretation, and differential isotopic labeling were used to establish the chemical composition and to suggest the chemical structures of reaction products. When cisplatin (cis-[PtCl2(NH3)2]) was used as a Pt(II) drug derivative, a coordination bond between diamminemonochloroplatinum(II) and the cyano group of CNCbl, in turn linked covalently to the vitamin Co(III) ion, occurred. The resulting conjugate with a CoIII-CN-PtII bridge was MS detected as a doubly positive charged ion with the prevailing isotopologue at m/z 810.26 (empirical formula [C63H95ClCoIIIN16O14PPt]2+). Likewise, a peak signal centered at m/z 811.26 was observed when 15N-labeled cisplatin cis-[PtCl2(15NH3)2] was used as Pt(II) complex, thus confirming the presence of both the cisplatin amino groups in the conjugate. A bifunctional conjugate was obtained between CNCbl and the cis-diamminediaquaplatinum(II), that is, cis-[Pt(NH3)2(H2O)2]2+; in this case, the planar coordination complex of Pt(II) was also involved in a covalent bond with the oxygen atom of one of the CNCbl amide moieties. The peak signal detected at m/z 792.26 (empirical formula [C63H94CoIIIN16O14PPt]2+) changed to m/z 793.26 when the labeled cis-[Pt(15NH3)2(H2O)2]2+ complex was adopted for conjugation. Comparison between MS/MS spectra allowed an extended structural characterization of both conjugates, as such or 15N-labeled. Two-dimensional heteronuclear (1H-15N) single quantum correlation NMR spectroscopy, applied to 15N-labeled conjugates, supported the hypotheses made on the Pt(II) coordination in both cases.
Collapse
Affiliation(s)
- Giovanni Ventura
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Maria Incoronata Nardella
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Andrea Panella
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Fabio Arnesano
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Cosima Damiana Calvano
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Ilario Losito
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Francesco Palmisano
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | - Tommaso R. I. Cataldi
- Dipartimento
di Chimica and Centro Interdipartimentale SMART, Università
degli Studi di Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| |
Collapse
|
11
|
Calvano CD, Monopoli A, Cataldi TRI, Palmisano F. MALDI matrices for low molecular weight compounds: an endless story? Anal Bioanal Chem 2018; 410:4015-4038. [DOI: 10.1007/s00216-018-1014-x] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/27/2018] [Accepted: 03/08/2018] [Indexed: 10/17/2022]
|
12
|
Ventura G, Arnesano F, Calvano CD, Palmisano F, Cataldi TRI. Cyanocobalamin conjugates of cisplatin and diaminocyclohexane-platinum(ii): matrix-assisted laser desorption ionization mass spectrometry characterization using 4-chloro-α-cyanocinnamic acid as the matrix. RSC Adv 2017. [DOI: 10.1039/c7ra08588e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
cis-Diamminedichloroplatinum(ii), also known as cisplatin, is a widely used chemotherapeutic agent to treat several malignant tumours, but unfortunately it causes serious side effects, especially nausea, vomiting and nephrotoxicity.
Collapse
Affiliation(s)
- G. Ventura
- Dipartimento di Chimica
- Università degli Studi di Bari Aldo Moro
- 70126 Bari
- Italy
| | - F. Arnesano
- Dipartimento di Chimica
- Università degli Studi di Bari Aldo Moro
- 70126 Bari
- Italy
- Centro Interdipartimentale SMART
| | - C. D. Calvano
- Dipartimento di Chimica
- Università degli Studi di Bari Aldo Moro
- 70126 Bari
- Italy
- Centro Interdipartimentale SMART
| | - F. Palmisano
- Dipartimento di Chimica
- Università degli Studi di Bari Aldo Moro
- 70126 Bari
- Italy
- Centro Interdipartimentale SMART
| | - T. R. I. Cataldi
- Dipartimento di Chimica
- Università degli Studi di Bari Aldo Moro
- 70126 Bari
- Italy
- Centro Interdipartimentale SMART
| |
Collapse
|