1
|
Poudel PB, Dhakal D, Magar RT, Parajuli N, Sohng JK. Genome Mining and Genetic Manipulation Reveal New Isofuranonaphthoquinones in Nocardia Species. Int J Mol Sci 2024; 25:8847. [PMID: 39201533 PMCID: PMC11354674 DOI: 10.3390/ijms25168847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/07/2024] [Accepted: 08/09/2024] [Indexed: 09/02/2024] Open
Abstract
The identification of specialized metabolites isolated from microorganisms is urgently needed to determine their roles in treating cancer and controlling multidrug-resistant pathogens. Naphthoquinones act as anticancer agents in various types of cancers, but some toxicity indicators have been limited in their appropriate application. In this context, new isofuranonaphthoquinones (ifnq) that are less toxic to humans could be promising lead compounds for developing anticancer drugs. The aim of this study is to identify and characterize novel furanonaphthoquinones (fnqs) from Nocardia sp. CS682 and to evaluate their potential therapeutic applications. Analysis of the genome of Nocardia sp. CS682 revealed the presence of a furanonaphthoquinone (fnq) gene cluster, which displays a similar genetic organization and high nucleotide sequence identity to the ifnq gene cluster from Streptomyces sp. RI-77, a producer of the naphthoquinones JBIR-76 and JBIR-77. In this study, the overexpression of the Streptomyces antibiotic regulatory protein (SARP) in Nocardia sp. CS682DR (nargenicin gene-deleted mutant) explicitly produced new fnqs, namely, NOC-IBR1 and NOC-IBR2. Subsequently, the role of the SARP regulator was confirmed by gene inactivation using CRISPR-Cas9 and complementation studies. Furthermore, antioxidant, antimicrobial, and cytotoxicity assays were performed for the isolated compounds, and it was found that NOC-IBR2 exhibited superior activities to NOC-IBR1. In addition, a flexible methyltransferase substrate, ThnM3, was found to be involved in terminal methylation of NOC-IBR1, which was confirmed by in vitro enzyme assays. Thus, this study supports the importance of genome mining and genome editing approaches for exploring new specialized metabolites in a rare actinomycete called Nocardia.
Collapse
Affiliation(s)
- Purna Bahadur Poudel
- Department of Life Science and Biochemical Engineering, Institute of Biomolecule Reconstruction (iBR), Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (D.D.); (R.T.M.); (N.P.)
| | - Dipesh Dhakal
- Department of Life Science and Biochemical Engineering, Institute of Biomolecule Reconstruction (iBR), Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (D.D.); (R.T.M.); (N.P.)
| | - Rubin Thapa Magar
- Department of Life Science and Biochemical Engineering, Institute of Biomolecule Reconstruction (iBR), Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (D.D.); (R.T.M.); (N.P.)
| | - Niranjan Parajuli
- Department of Life Science and Biochemical Engineering, Institute of Biomolecule Reconstruction (iBR), Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (D.D.); (R.T.M.); (N.P.)
- Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu 44618, Nepal
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Institute of Biomolecule Reconstruction (iBR), Sun Moon University, Asan 31460, Republic of Korea; (P.B.P.); (D.D.); (R.T.M.); (N.P.)
- Department of Pharmaceutical Engineering and Biotechnology, Sun Moon University, Asan 31460, Republic of Korea
| |
Collapse
|
2
|
Feng KR, Tan YX, Ye W, Wang YF, He ZT, Tian P, Lin GQ. One-Pot Preparation of Tricyclo[5.2.2.0 4,9]undecanes via Cu-Catalyzed Asymmetric Carboboration of Cyclohexadienone-Tethered Allenes. Org Lett 2020; 23:607-611. [PMID: 33377781 DOI: 10.1021/acs.orglett.0c04191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Cu-catalyzed asymmetric carboboration of cyclohexadienone-tethered allenes has been achieved through regioselective β-borylation of the allenes and subsequent conjugate addition to cyclohexadienones, affording cis-bicyclic frameworks with acceptable yields and high to excellent enantioselectivities. Further conjugate borylation of the carboboration products proved to be a favorable kinetic resolution process, which improved the overall enantioselectivity. Finally, one-pot preparation of highly enantioenriched tricyclo[5.2.2.04,9]undecanes was developed from the cyclohexadienone-tethered allenes through β-borylation/1,4-addition and subsequent tandem oxidation/intramolecular aldol reaction.
Collapse
Affiliation(s)
- Kai-Rui Feng
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Yun-Xuan Tan
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.,CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wenbo Ye
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Yi-Fan Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhi-Tao He
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ping Tian
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.,CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Guo-Qiang Lin
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China.,CAS Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| |
Collapse
|
3
|
Sánchez-Suárez J, Coy-Barrera E, Villamil L, Díaz L. Streptomyces-Derived Metabolites with Potential Photoprotective Properties-A Systematic Literature Review and Meta-Analysis on the Reported Chemodiversity. Molecules 2020; 25:E3221. [PMID: 32679651 PMCID: PMC7397340 DOI: 10.3390/molecules25143221] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 02/07/2023] Open
Abstract
Sun overexposure is associated with the development of diseases that primarily affect the skin, which can lead to skin cancer. Among the main measures of photoprotection is the use of sunscreens. However, there is currently concern about the reported harmful effects to both humans and the environment due to several of the sunscreen ingredients available on the market. For this reason, the search for and development of new agents with photoprotective properties is required. In searching for these metabolites, researchers have turned their attention to microbial sources, especially the microbiota in unusual hostile environments. Among the diverse microorganisms available in nature, Actinobacteria and specifically Streptomyces, have been shown to be a source of metabolites with various biological activities of interest, such as antimicrobial, antitumor and immunomodulator activities. Herein, we present the results of a systematic review of the literature in which Streptomyces isolates were studied as a source of compounds with photoprotective properties. A meta-analysis of the structure-property and structure-activity relationships of those metabolites identified in the qualitative analysis phase was also carried out. These findings indicate that Streptomyces are a source of metabolites with potential applications in the development of new, safe and more eco-friendly sunscreens.
Collapse
Affiliation(s)
- Jeysson Sánchez-Suárez
- Doctoral Program of Biosciences, School of Engineering, Universidad de La Sabana, Chía 140013, Cundinamarca, Colombia; (J.S.-S.); (L.V.)
- Bioprospecting Research Group, School of Engineering, Universidad de La Sabana, Chía 140013, Cundinamarca, Colombia
| | - Ericsson Coy-Barrera
- Bioorganic Chemistry Laboratory, Universidad Militar Nueva Granada, Bogotá 110111, Cajicá, Cundinamarca, Colombia;
| | - Luisa Villamil
- Doctoral Program of Biosciences, School of Engineering, Universidad de La Sabana, Chía 140013, Cundinamarca, Colombia; (J.S.-S.); (L.V.)
| | - Luis Díaz
- Doctoral Program of Biosciences, School of Engineering, Universidad de La Sabana, Chía 140013, Cundinamarca, Colombia; (J.S.-S.); (L.V.)
- Bioprospecting Research Group, School of Engineering, Universidad de La Sabana, Chía 140013, Cundinamarca, Colombia
| |
Collapse
|
4
|
Yang B, Lin K, Shi Y, Gao S. Ti(Oi-Pr) 4-promoted photoenolization Diels-Alder reaction to construct polycyclic rings and its synthetic applications. Nat Commun 2017; 8:622. [PMID: 28931807 PMCID: PMC5607006 DOI: 10.1038/s41467-017-00440-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 06/26/2017] [Indexed: 11/09/2022] Open
Abstract
Stereoselective construction of polycyclic rings with all-carbon quaternary centers, and vicinal all-carbon quaternary stereocenters, remains a significant challenge in organic synthesis. These structures can be found in a wide range of polycyclic natural products and drug molecules. Here we report a Ti(Oi-Pr)4-promoted photoenolization/Diels–Alder (PEDA) reaction to construct hydroanthracenol and related polycyclic rings bearing all-carbon quaternary centers. This photolysis proceeds under mild conditions and generates a variety of photo-cycloaddition products in good reaction efficiency and stereoselectivity (48 examples), and has been successfully used in the construction of core skeleton of oncocalyxones, tetracycline and pleurotin. It also provides a reliable method for the late-stage modification of natural products bearing enone groups, such as steroids. The total synthesis of oncocalyxone B was successfully achieved using this PEDA approach. Anthracenols with multiple chiral centres are common motifs in natural products. Here, the authors show a highly stereoselective photoenolization/Diels–Alder methodology involving a key Lewis acid reagent enabling the efficient construction of a family of anthracenol derivatives with quaternary centers.
Collapse
Affiliation(s)
- Baochao Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Kuaikuai Lin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Yingbo Shi
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China.
| |
Collapse
|
5
|
Motohashi K, Izumikawa M, Kagaya N, Takagi M, Shin-ya K. JBIR-76 and JBIR-77, modified naphthoquinones from Streptomyces sp. RI-77. J Antibiot (Tokyo) 2016; 69:707-8. [DOI: 10.1038/ja.2015.135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/13/2015] [Accepted: 11/24/2015] [Indexed: 11/09/2022]
|
6
|
|