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Gärditz KF, Czesnick H. Paclitaxel - a Product of Fungal Secondary Metabolism or an Artefact? PLANTA MEDICA 2024; 90:726-735. [PMID: 38754434 PMCID: PMC11254485 DOI: 10.1055/a-2309-6298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 04/05/2024] [Indexed: 05/18/2024]
Abstract
Taxol (common name: paclitaxel) is an extremely important component of drugs for the treatment of various cancers. Thirty years after the discovery of its effectiveness, a metabolic precursor of Taxol (10-deacetylbaccatin III) is still primarily extracted from needles of European yew trees. In order to meet the considerable demand, hopes were pinned on the possibilities of biotechnological production from the very beginning. In 1993, as if by chance, Taxol was supposedly discovered in fungi that grow endobiotically in yew trees. This finding aroused hopes of biotechnological use to produce fungal Taxol in large quantities in fermenters. It never came to that. Instead, a confusing flood of publications emerged that claimed to have detected Taxol in more and more eukaryotic and even prokaryotic species. However, researchers never reproduced these rather puzzling results, and they could certainly not be applied on an industrial scale. This paper will show that some of the misguided approaches were apparently based on a seemingly careless handling of sparse evidence and on at least questionable publications. Apparently, the desired gold rush of commercial exploitation was seductive. Scientific skepticism as an indispensable core of good scientific practice was often neglected, and the peer review process has not exerted its corrective effect. Self-critical reflection and more healthy skepticism could help to reduce the risk of such aberrations in drug development. This article uses this case study as a striking example to show what can be learned from the Taxol case in terms of research ethics and the avoidance of questionable research practices.
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Affiliation(s)
- Klaus Ferdinand Gärditz
- Institute of Public Law, University of Bonn, Bonn, Germany
- Ombudsman for suspected cases of scientific misconduct, University of Bonn, Bonn, Germany
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Fu Y, Li X, Yuan X, Zhang Z, Wei W, Xu C, Song J, Gu C. Alternaria alternata F3, a Novel Taxol-Producing Endophytic Fungus Isolated from the Fruits of Taxus cuspidata: Isolation, Characterization, Taxol Yield Improvement, and Antitumor Activity. Appl Biochem Biotechnol 2024; 196:2246-2269. [PMID: 37498379 DOI: 10.1007/s12010-023-04661-0] [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] [Accepted: 07/04/2023] [Indexed: 07/28/2023]
Abstract
In this study, a novel taxol-producing endophytic fungus, strain F3, was isolated from the fruits of Taxus cuspidata and identified as Alternaria alternata according to its macroscopic and microscopic traits and sequence analysis of internal transcribed spacer (ITS). The presence of taxol was detected by thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC) and confirmed by ultra-high-performance liquid chromatography-electrospray coupled to tandem mass spectrometry (UPLC-ESI-MS/MS) and nuclear magnetic resonance (NMR). The fermentation parameters of strain F3 were then optimized for high taxol production. The maximum taxol yield of 195.4 µg L-1 by A. alternata F3 was observed in 200-mL yeast peptone dextrose (YPD) broth, at an initial pH value of 6.0, supplemented with 0.1 g L-1 sodium acetate, 0.25 g L-1 salicylic acid, and 0.00125 g L-1 silver nitrate and inoculum size 2%, and incubated at 28 °C and 150 rpm for 8 days, which was 2.12-fold compared with the initial yield of taxol. Also, fungal taxol exhibited antitumor activity towards human lung carcinoma (A549) cell line and human cervical carcinoma (Hela) cell line with IC50 values of 3.98 µg mL-1 and 0.35 µg mL-1. Overall, this is the first report on taxol-producing endophytic fungus isolated from the fruits of Taxus. This study offers a novel source for the production of taxol for anticancer treatment.
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Affiliation(s)
- Yuefeng Fu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China
| | - Xinyue Li
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China
| | - Xiaohan Yuan
- Life Science and Biotechnique Research Center, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Zhihui Zhang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China
| | - Wei Wei
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China
| | - Cheng Xu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China
| | - Jinfeng Song
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, College of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, People's Republic of China.
| | - Chengbo Gu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China.
- Engineering Research Center of Forest Bio-Preparation, Ministry of Education, Northeast Forestry University, Harbin, 150040, People's Republic of China.
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, People's Republic of China.
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Harbin, 150040, People's Republic of China.
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, College of Forestry, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, People's Republic of China.
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Sati P, Sharma E, Dhyani P, Attri DC, Rana R, Kiyekbayeva L, Büsselberg D, Samuel SM, Sharifi-Rad J. Paclitaxel and its semi-synthetic derivatives: comprehensive insights into chemical structure, mechanisms of action, and anticancer properties. Eur J Med Res 2024; 29:90. [PMID: 38291541 PMCID: PMC10826257 DOI: 10.1186/s40001-024-01657-2] [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: 11/09/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
Cancer is a disease that can cause abnormal cell growth and can spread throughout the body. It is among the most significant causes of death worldwide, resulting in approx. 10 million deaths annually. Many synthetic anticancer drugs are available, but they often come with side effects and can interact negatively with other medications. Additionally, many chemotherapy drugs used for cancer treatment can develop resistance and harm normal cells, leading to dose-limiting side effects. As a result, finding effective cancer treatments and developing new drugs remains a significant challenge. However, plants are a potent source of natural products with the potential for cancer treatment. These biologically active compounds may be the basis for enhanced or less toxic derivatives. Herbal medicines/phytomedicines, or plant-based drugs, are becoming more popular in treating complicated diseases like cancer due to their effectiveness and are a particularly attractive option due to their affordability, availability, and lack of serious side effects. They have broad applicability and therapeutic efficacy, which has spurred scientific research into their potential as anticancer agents. This review focuses on Paclitaxel (PTX), a plant-based drug derived from Taxus sp., and its ability to treat specific tumors. PTX and its derivatives are effective against various cancer cell lines. Researchers can use this detailed information to develop effective and affordable treatments for cancer.
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Affiliation(s)
- Priyanka Sati
- Department of Biotechnology, Kumaun University, Bhimtal, Uttarakhand, India
| | - Eshita Sharma
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Praveen Dhyani
- Institute for Integrated Natural Sciences, University of Koblenz, Koblenz, Germany
| | - Dharam Chand Attri
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Jammu and Kashmir, India
| | - Rohit Rana
- Department of Biology, Brandeis University, Waltham, MA, USA
| | - Lashyn Kiyekbayeva
- Department of Pharmaceutical Technology, Pharmaceutical School, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar.
| | - Samson Mathews Samuel
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar.
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Zhang Q, Chang S, Yang Y, Xi C, Dong Y, Liu L, He Y, Liu Y, Cai B, Liu T. Endophyte-inoculated rhizomes of Paris polyphylla improve polyphyllin biosynthesis and yield: a transcriptomic analysis of the underlying mechanism. Front Microbiol 2023; 14:1261140. [PMID: 38029197 PMCID: PMC10643526 DOI: 10.3389/fmicb.2023.1261140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Polyphyllin from Paris polyphylla var. yunnanensis exhibits anti-inflammatory, analgesic, antibacterial, and antiviral properties. However, the current production of polyphyllin can barely meet market demand. To improve the content of polyphyllin produced by P. polyphylla, two endophyte strains, Bacillus cereus LgD2 and Fusarium oxysporum TPB, were isolated from Paris fargesii Franch. and inoculated in the roots of P. polyphylla. Both symbiotic strains significantly promoted the accumulation of saponins in P. polyphylla. Methods The content of polyphyllin in rhizomes of P. polyphylla treated with TPB with LgD2 strain was determined using High Performance Liquid Chromatography and the expressed genes were analyzed by RNA-seq. Gene Ontology and Kyoto Encyclopedia of Genes annotations were performed on the differentially expressed genes, a clustering tree of UDP-glycosyltransferase (UGT) and cytochrome P450 (CYP450) gene families was constructed, and UGT and CYP450 involved in the biosynthesis of polyphyllin were predicted using weighted correlation network analysis (WGCNA). Results RNA-seq and qRT-PCR analyses showed that endophytic inoculation did not promote polyphyllin accumulation by enhancing the upstream terpene biosynthesis pathway, but probably by up-regulating the downstream CYP450 and UGT genes associated with polyphyllin biosynthesis. Genomes enrichment analyses of differentially expressed genes indicated that inoculation with LgD2 and TPB played a positive role in promoting the defense against pathogenic bacteria, enhancing the biosynthesis of carbohydrates, attenuating the process of nitrogen metabolism, and maintaining the equilibrium of the redox reaction homeostasis, potentially indirectly enhancing the polyphyllin yield of P. polyphylla. By combining differentially expressed genes screening, WGCNA, and phylogenetic tree analyses, 17 CYP450 and 2 UGT candidate genes involved in the biosynthesis of polyphyllin I, polyphyllin II, polyphyllin VII, polyphyllin D, and polyphyllin H were identified. These results suggest that endophytes probably effectively promote the accumulation of polyphyllin by regulating key downstream genes in biosynthetic pathways. Discussion This study provides a new approach for investigating the regulatory mechanisms of endophytes that promote the production and accumulation of polyphyllin in P. polyphylla, providing a basis for further elucidating the mechanisms of plant-endophyte interactions.
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Affiliation(s)
- Qing Zhang
- National-Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwest China, College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
| | - Sheng Chang
- Center of Yunnan Zhongyan Industry Co., Ltd., Kunming, China
| | - Ying Yang
- Center of Yunnan Zhongyan Industry Co., Ltd., Kunming, China
| | - Congfang Xi
- National-Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwest China, College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
| | - Yumei Dong
- National-Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwest China, College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
| | - Lufeng Liu
- National-Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwest China, College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
| | - Yunchao He
- Lushui City Katma Township People's Government Agricultural and Rural Integrated Service Center, Lushui, Yunnan, China
| | - Yu Liu
- Shenzhen TCM Hospital, Shenzhen, China
| | - Bo Cai
- Center of Yunnan Zhongyan Industry Co., Ltd., Kunming, China
| | - Tao Liu
- National-Local Joint Engineering Research Center on Germplasm Innovation and Utilization of Chinese Medicinal Materials in Southwest China, College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China
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Subban K, Kempken F. Insights into Taxol® biosynthesis by endophytic fungi. Appl Microbiol Biotechnol 2023; 107:6151-6162. [PMID: 37606790 PMCID: PMC10560151 DOI: 10.1007/s00253-023-12713-y] [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: 06/19/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/23/2023]
Abstract
There have been two hundred reports that endophytic fungi produce Taxol®, but its production yield is often rather low. Although considerable efforts have been made to increase Taxol/taxanes production in fungi by manipulating cocultures, mutagenesis, genome shuffles, and gene overexpression, little is known about the molecular signatures of Taxol biosynthesis and its regulation. It is known that some fungi have orthologs of the Taxol biosynthetic pathway, but the overall architecture of this pathway is unknown. A biosynthetic putative gene homology approach, combined with genomics and transcriptomics analysis, revealed that a few genes for metabolite residues may be located on dispensable chromosomes. This review explores a number of crucial topics (i) finding biosynthetic pathway genes using precursors, elicitors, and inhibitors; (ii) orthologs of the Taxol biosynthetic pathway for rate-limiting genes/enzymes; and (iii) genomics and transcriptomics can be used to accurately predict biosynthetic putative genes and regulators. This provides promising targets for future genetic engineering approaches to produce fungal Taxol and precursors. KEY POINTS: • A recent trend in predicting Taxol biosynthetic pathway from endophytic fungi. • Understanding the Taxol biosynthetic pathway and related enzymes in fungi. • The genetic evidence and formation of taxane from endophytic fungi.
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Affiliation(s)
- Kamalraj Subban
- Department of Genetics & Molecular Biology in Botany, Botanical Institute and Botanical Garden, Christian-Albrecht University of Kiel, Olshausenstraße 40, 24098, Kiel, Germany
| | - Frank Kempken
- Department of Genetics & Molecular Biology in Botany, Botanical Institute and Botanical Garden, Christian-Albrecht University of Kiel, Olshausenstraße 40, 24098, Kiel, Germany.
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Mishra S, Sahu PK, Agarwal V, Singh N. Exploiting endophytic microbes as micro-factories for plant secondary metabolite production. Appl Microbiol Biotechnol 2021; 105:6579-6596. [PMID: 34463800 DOI: 10.1007/s00253-021-11527-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 01/19/2023]
Abstract
Plant secondary metabolites have significant potential applications in a wide range of pharmaceutical, food, and cosmetic industries by providing new chemistries and compounds. However, direct isolation of such compounds from plants has resulted in over-harvesting and loss of biodiversity, currently threatening several medicinal plant species to extinction. With the breakthrough report of taxol production by an endophytic fungus of Taxus brevifolia, a new era in natural product research was established. Since then, the ability of endophytic microbes to produce metabolites similar to those produced by their host plants has been discovered. The plant "endosphere" represents a rich and unique biological niche inhabited by organisms capable of producing a range of desired compounds. In addition, plants growing in diverse habitats and adverse environmental conditions represent a valuable reservoir for obtaining rare microbes with potential applications. Despite being an attractive and sustainable approach for obtaining economically important metabolites, the industrial exploitation of microbial endophytes for the production and isolation of plant secondary metabolites remains in its infancy. The present review provides an updated overview of the prospects, challenges, and possible solutions for using microbial endophytes as micro-factories for obtaining commercially important plant metabolites.Key points• Some "plant" metabolites are rather synthesized by the associated endophytes.• Challenges: Attenuation, silencing of BGCs, unculturability, complex cross-talk.• Solutions: Simulation of in planta habitat, advanced characterization methods.
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Affiliation(s)
- Sushma Mishra
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India.
| | - Pramod Kumar Sahu
- ICAR-National Bureau of Agriculturally Important Microorganisms, Kushmaur, Maunath Bhanjan, Uttar Pradesh, 275103, India
| | - Vishad Agarwal
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India
| | - Namrata Singh
- Plant Biotechnology Laboratory, Dayalbagh Educational Institute (Deemed-to-be-University), Agra, Uttar Pradesh, 282005, India
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Daley SK, Cordell GA. Biologically Significant and Recently Isolated Alkaloids from Endophytic Fungi. JOURNAL OF NATURAL PRODUCTS 2021; 84:871-897. [PMID: 33534564 DOI: 10.1021/acs.jnatprod.0c01195] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A selection of the established and recently characterized alkaloids from the exploration of plant- and some marine-associated endophytic fungi is reviewed, with reference to alkaloids of biological significance.
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Affiliation(s)
| | - Geoffrey A Cordell
- Natural Products Inc., Evanston, Illinois 60202, United States
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, Florida 32610, United States
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Dantas SBS, Alves FAM, Chapla VM. Chemical, diversity and biotechnological potential of endophytic fungi isolated from Brazilian Cerrado plants. BIOTA NEOTROPICA 2021. [DOI: 10.1590/1676-0611-bn-2020-1069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract: This is a systematic review of scientific articles reporting the biodiversity of endophytic fungi isolated from endemic Cerrado plants in Brazil and exposes the potential applications of these microorganisms in the production of known and new metabolites. The “Portal de Periódicos” (CAPES), Science Direct, PubMed, Scielo, and Biblioteca Virtual em Saúde (BVS) databases were used. A total of 418 articles were found using the following sets of keywords: Endophytic, fungi, and Cerrado; endophytic, fungi, rupestrian, and grass lands; endophytic, fungi, Brazilian, and savanna; among these, 14 articles were selected. The articles were grouped into studies on the biodiversity of Cerrado endophytic fungi, chemical studies, and other subjects. All the articles were found to be related to the diversity present in the Cerrado of the southeastern and midwestern regions, they show high fungal biodiversity with Diaporthe genus predominant in almost all plants studied. In all the studies on the chemical diversity of endophytic fungi, new compounds or new natural products were found associated with a range of bioactivity, especially antifungal. It shows the great potential of endophytes in the production of new and bioactive secondary metabolites, as well as the unexplored chemical diversity of endophytes isolated from endemic plant species. The review shows that rare studies performed in regions where the Cerrado biome are predominant, including the central, north, and northeast regions, representing an important niche that is still unexplored.
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Gupta S, Chaturvedi P, Kulkarni MG, Van Staden J. A critical review on exploiting the pharmaceutical potential of plant endophytic fungi. Biotechnol Adv 2020; 39:107462. [DOI: 10.1016/j.biotechadv.2019.107462] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 09/22/2019] [Accepted: 10/22/2019] [Indexed: 02/08/2023]
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Suresh G, Kokila D, Suresh TC, Kumaran S, Velmurugan P, Vedhanayakisri KA, Sivakumar S, Ravi AV. Mycosynthesis of anticancer drug taxol by Aspergillus oryzae, an endophyte of Tarenna asiatica, characterization, and its activity against a human lung cancer cell line. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101525] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Isolation of taxol producing endophytic fungus Alternaria brassicicola from non-Taxus medicinal plant Terminalia arjuna. World J Microbiol Biotechnol 2019; 35:74. [DOI: 10.1007/s11274-019-2651-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/26/2019] [Indexed: 01/16/2023]
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