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Su Y, Li P, Zhang H, Lin M, Liu W, Xu R, Hu H, Liu YM. Simultaneous Quantification of Adenosine and Deoxyadenosine Isomers in Foods with High Sensitivity. Anal Methods 2019; 11:4946-4950. [PMID: 32632347 PMCID: PMC7337225 DOI: 10.1039/c9ay01735f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Simultaneous quantification of adenosine and deoxyadenosine isomers, including 2'-deoxyadenosine (dA) and 3'-deoxyadenosine (cordycepin, COR) is a challenge because they are very similar in chemical structure. In some previous studies on food ingredients, adenine and dA might be mistakenly detected as COR that has been shown to have multiple health benefits. In this work, we developed a novel HPLC method with fluorescence detction (HPLC-FD) to simultaneously quantify COR, adenosine and dA. Pre-column derivatization with chloroacetaldehyde (CAA) was deployed. The proposed method has a limit of detection at the nM level for COR and adenosine, and is far more sensitive than the methods previously deveopled for COR determination. Using the present method, caterpillar fungi were analyzed as model food samples. The analysis revealed that COR was present in cordyceps militaris and cordyceps flowers in a concentration range from 0.314 to 0.735 mg/g, but not in cordyceps sinensis (C. sinensis), a natural and the priciest caterpillar fungus. These results suggest that the profile of active ingredients in C. sinensis has been wrongly claimed for many years. This finding was also supported by the results from further HPLC-MS/MS analyses.
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Affiliation(s)
- Yaxia Su
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, 169 Donghu Rd, Wuhan, Hubei 430071, People’s Republic of China
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St. Jackson, MS 39217, USA
| | - Pan Li
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St. Jackson, MS 39217, USA
| | - Huaisheng Zhang
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St. Jackson, MS 39217, USA
| | - Manting Lin
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, 169 Donghu Rd, Wuhan, Hubei 430071, People’s Republic of China
| | - Weizhi Liu
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, 169 Donghu Rd, Wuhan, Hubei 430071, People’s Republic of China
| | - Rui Xu
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St. Jackson, MS 39217, USA
| | - Hankun Hu
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, 169 Donghu Rd, Wuhan, Hubei 430071, People’s Republic of China
| | - Yi-Ming Liu
- Department of Chemistry and Biochemistry, Jackson State University, 1400 Lynch St. Jackson, MS 39217, USA
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Zheng M, Hwang S, Snyder T, Aquilina J, Proni G, Paz MM, Pradhan P, Cheng SY, Champeil E. Synthesis of Mitomycin C and decarbamoylmitomycin C N 6 deoxyadenosine-adducts. Bioorg Chem 2019; 92:103280. [PMID: 31539740 DOI: 10.1016/j.bioorg.2019.103280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 01/06/2023]
Abstract
Mitomycin C (MC), an anti-cancer drug, and its analog, decarbamoylmitomycin C (DMC), are DNA-alkylating agents. MC is currently used in the clinics and its cytotoxicity is mainly due to its ability to form Interstrand Crosslinks (ICLs) which impede DNA replication and, thereby, block cancer cells proliferation. However, both MC and DMC are also able to generate monoadducts with DNA. In particular, we recently discovered that DMC, like MC, can form deoxyadenosine (dA) monoadducts with DNA. The biological role played by these monoadducts is worthy of investigation. To probe the role of these adducts and to detect them in enzymatic digests of DNA extracted from culture cells treated by both drugs, we need access to reference compounds i.e. MC and DMC dA-mononucleoside adducts. Previous biomimetic methods used to generate MC and DMC mononucleoside adducts are cumbersome and very low yielding. Here, we describe the diastereospecific chemical synthesis of both C-1 epimers of MC and DMC deoxyadenosine adducts. The key step of the synthesis involves an aromatic substitution reaction between a 6-fluoropurine 2'-deoxyribonucleoside and appropriately protected stereoisomeric triaminomitosenes to form protected-MC-dA adducts with either an S or R stereochemical configuration at the adenine-mitosene linkage. Fluoride-based deprotection methods generated the final four reference compounds: the two stereoisomeric MC-dA adducts and the two stereoisomeric DMC-dA adducts. The MC and DMC-dA adducts synthesized here will serve as standards for the detection and identification of such adducts formed in the DNA of culture cells treated with both drugs.
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Affiliation(s)
- Maggie Zheng
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Seokjin Hwang
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Timothy Snyder
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Jake Aquilina
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Gloria Proni
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Manuel M Paz
- Departamento de Química Orgánica, Facultade de Química, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Padmanava Pradhan
- The City College, 138th Street at Convent Avenue, New York, NY 10031, USA.
| | - Shu-Yuan Cheng
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA.
| | - Elise Champeil
- John Jay College of Criminal Justice, New York, 524 West 59(th) Street, New York, NY 10019, USA; The Graduate Center of the City University of New York, New York, NY 10016, USA.
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