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Through MS-based peptidomics analysis, seven peptides belonging to three different classes of antibacterial peptides, including a defensin, lipid transfer proteins, and snakins, were discovered in the aerial tissue part of amaranth (Amaranthus tricolor). Furthermore, the two bioactive peptides extracted from Acacia catechu, an Asian medicinal plant, have been found to exhibit strong inhibitory effects against dengue viruses, indicating their potential as potent antiviral agents (Moyer et al., 2021).
Using a rapid 1H NMR-based metabolomic approach, researchers analyzed a blend of fourteen Fabaceae species commonly found in Mediterranean vegetation for its primary
metabolites. The study identied 31 primary metabolites in the blend that have the ability
to kill colon cancer cells. Among these metabolites, “Compound A from Astragalus boeticus L.” and “Compound B from Trigonella esculenta Willd” were identied as the
most potent compounds. MS-based proteomics has been used to investigate the trichome machinery and its role in artemisinin production in Artemisia annua L. (Bryant et al., 2015; Chen et al., 2020). Kim et al. (2017) conducted a comprehensive proteomics review of Panax species, which possess medicinal properties including circulatory shock protection, anticancer, and antiaging, and also conducted a comparative proteomics analysis of the root and leaf tissues of Indian, Oriental, and American ginseng. The application of proteomics-based techniques has provided valuable insights into the biology of ginseng, particularly in the case of Withania sominifera (L.) Dunal (Indian ginseng) which is renowned for its withanolide secondary metabolites. Upon 2D-gel separation, the root tissue of Indian ginseng revealed 56 unique spots, and matrix-assisted
laser desorption/ionization time-of-ight/time-of-ight analysis was used to identify
22 proteins (Nagappan et al., 2012). The use of NMR spectroscopy in metabolomics research provides valuable data for detecting changes in two different dimensions. Aloe vera (L.) Burm. f., a plant that has anticancer properties, was studied using NMR
spectroscopy and multivariate analysis to evaluate its metabolite prole and inhibitory
effects. The metabolome was found to affect the expression of the Bcl-2 and p53 genes in hepatocellular carcinoma cells.
Thus, proteomics research on medicinal plants has provided important knowledge regarding the structure, function, changes, and drug interactions of proteins. This informa­tion offers a better understanding of how plant-based medicines work in tumor cells or any other cells and sheds light on the physiological status and hereditary characteristics of plants. Such insights can potentially aid in the development of more effective natural products based drugs for various disease treatments. Although proteomics data can provide valuable information about protein structure, function, modications, and drug interac­tions, it may not always be consistent with transcriptomics data due to post-transcriptional
and post-translational modications. Therefore, it is essential to adopt integrated omics
approaches in future research to gain a comprehensive understanding of medicinal plant biology. Metabolomics research conducted on medicinal plants has yielded valuable information about identifying and isolating metabolites and NCCs, which can be used to develop new drugs. Furthermore, these studies provide a better understanding of the chemical composition of plant metabolites and their phytochemistry.
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10.3.2 LIMITATIONS AND CHALLENGES OF USING PROTEOMICS AND METABOLOMICS IN NATURAL PRODUCT DISCOVERY
There are several limitations and challenges associated with using proteomics and metabolomics in natural product discovery. These include the complexity of the data, the lack of comprehensive databases, and the difficulty of identifying novel natural products. Challenges in proteomics and metabolomics for natural product discovery include the complexity of biological samples, the lack of standardized protocols for sample preparation and analysis, and the need for extensive data analysis and interpretation. Despite the chal­lenges, proteomics and metabolomics have the potential to make a significant impact on natural product-based drug discovery. The integration of proteomic and metabolomic data with other omics data, such as genomics and transcriptomics, is expected to provide a more comprehensive understanding of natural product biosynthesis and regulation. The develop­ment of more comprehensive databases and software tools is also expected to facilitate the identification and annotation of metabolites. Future directions in proteomics and metabo­lomics for natural product discovery include the development of more advanced analytical techniques, improved data analysis and interpretation, and the integration of multiple omics approaches. The potential impact of these advances includes the discovery of new natural compounds with the potential for therapeutic use and the optimization of natural product biosynthesis for improved yields and reduced environmental impact (Ong and Mann, 2005).

10.4 BIOINFORMATICS IN NATURAL PRODUCT-BASED DRUG DISCOVERY

Biological data, such as DNA, RNA, protein sequences, and other biological information, are managed and analyzed by the interdisciplinary area of bioinformatics, which merges biology, computer science, mathematics, and statistics (Bayat, 2022). Bioinformatics has become increasingly important in the field of natural product-based drug discovery, which involves identifying and characterizing new natural compounds from living organisms for use in medicine, agriculture, and industry. Natural substances called phytochemicals are present in plants and have been linked to several health advantages, such as anticancer, anti-inflammatory, and antioxidant effectsClick or tap here to enter text.. Bioinformatics plays a critical role in phytochemical discovery by providing researchers with tools and resources to analyze and identify these compounds.

10.4.1 ROLE OF BIOINFORMATICS IN NATURAL PRODUCT-BASED DRUG DISCOVERY

Bioinformatics plays an important role in the following areas for drug discovery.
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Bioinformatics tools can be used to analyze the genome sequences of various organisms to identify the BGCs responsible for producing natural products. By identifying these gene
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clusters, researchers can better understand the biosynthesis of natural products and develop strategies for their efficient production.
Genome mining involves the computational analysis of genome sequences to identify gene clusters that are responsible for the biosynthesis of natural products. This approach involves the use of tools such as antiSMASH, which can predict BGCs and provide insights into the biosynthetic pathways of natural products (Chavali and Rhee, 2018).
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Bioinformatics tools can also be used to analyze the complex mixtures of small molecules that are produced by living organisms. By analyzing the MS data generated from these mixtures, researchers can identify novel natural products and determine their chemical structures.
Bioinformatics tools can be used to analyze metabolomics data from plants to identify and characterize phytochemicals. This involves the use of MS and other analytical techniques to detect and quantify the presence of phytochemicals in plant tissues. Metabolomics involves the comprehensive analysis of small molecules, such as natural products, in biological samples. This approach can be used to identify novel natural products and characterize their chemical properties. Metabolomics data can be analyzed using bioinformatics tools such as Mass Spectrometry Data Analysis Tool to identify and quantify the presence of natural products in samples (Marco-Ramell et al., 2018).
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Bioinformatics tools can also be used to predict the biological activities of natural products. By analyzing the chemical structures of natural products, researchers can predict their potential targets and modes of action, which can help guide drug discovery efforts (Thomford et al., 2018).
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Bioinformatics tools are also used to manage the large amounts of data generated in natural product discovery. It is used to manage large databases of plant metabolites, including phyto­chemicals. By developing and maintaining databases of natural products and their associated data, researchers can more efficiently analyze and compare the properties of different compounds. These databases provide researchers with access to the chemical structures, physical properties, and biological activities of these compounds (Bayat, 2022; Chavali and Rhee, 2018).
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Network analysis involves the construction and analysis of biological networks, such as metabolic pathways and protein–protein interaction networks. This approach can be used
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to identify novel natural products and potential targets for drug discovery (Atanasov et al.,
2021). For example, network analysis can be used to identify enzymes involved in the biosynthesis of natural products and predict their potential substrates.
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It involves the development of algorithms that can learn from data and make predictions. This approach can be used to predict the properties of natural products, such as their biological activities and toxicity . For example, machine learning algorithms can be trained on a dataset of known natural products and their activities to predict the activities of novel compounds (Biswas et al., 2023).
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Bioinformatics tools can be used to predict the biological activities of phytochemicals. This involves analyzing the chemical structures of these compounds and predicting their potential targets and modes of action (Wright and Sieber, 2016; Chen et al., 2020).

10.4.2 THE USE OF BIOINFORMATICS TO PREDICT AND ANNOTATE NATURAL PRODUCT BIOSYNTHETIC PATHWAYS, GENE CLUSTERS, AND METABOLOMICS

Genome mining involves the analysis of genomic data to identify BGCs that are respon­sible for the production of natural products (Chavali and Rhee, 2018; Walker and Clardy,
2021). Bioinformatics tools such as antiSMASH, Deep-BGC, SMURF, and PRISM, are geared toward identifying specific phytochemicals from natural products. AntiSMASH has identified more than l lakh BGC sequences with a unique structure, which have given many new drug entities (Walker and Clardy, 2021).
PRISM 4 is a method that was just recently published for predicting natural product
activity from the sequence of BGCs, by using chemical ngerprints (Skinnider et al., 2020).
Once BGCs have been identied, bioinformatics tools are utilized in identifying specic pathways of natural products. This involves the identication of biosynthetic enzymes,
transporters, and regulatory genes involved in the biosynthesis of various phytochemicals. Pathway prediction and annotation are essential for understanding the biosynthesis and
regulation of natural products and for the identication of potential drug targets.
Similar to other “omics” elds, metabolomics calls for specic bioinformatics tools.
Analyzing metabolomics data involves multiple key phases, including intensive raw data preparation, multivariate statistical analysis and bioinformatics tools, data mining, incor­poration with other omics data, and mathematical network modeling.
Metabolite proling involves the analysis of the metabolites produced by an organism. Bioinformatics tools, such as metabolite proling and pathway analysis, can be used to identify and quantify the metabolites produced by an organism. Metabolite proling can
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also be used to identify key regulatory metabolites and metabolic pathways that inuence
natural product biosynthesis. To determine the chemical structure of a natural product, several tools, such as molecular docking and virtual screening, can be used to predict the chemical structure of a natural product based on its biosynthetic pathway and metabolite
proling data. Structural elucidation is essential for identifying potential drug candidates
and for understanding the mechanisms of action of natural products.
Gene expression analysis involves the measurement of the amount of mRNA produced by genes under different conditions. This approach can be used to identify genes that are upregulated or downregulated during natural product biosynthesis (W alker and Clardy , 2021). By analyzing gene expression data, researchers can predict the functions of uncharacterized genes and identify potential biosynthetic intermediates.
Once potential natural product candidates have been identied, they can be screened for
their biological activity using bioassays. Bioinformatics approaches have revolutionized natural product discovery by enabling researchers to analyze large datasets and extract meaningful insights (Xia, 2017). Bioinformatics tools, such as network analysis and machine learning, can be used to predict the potential biological activity of natural products based on their chemical structure and biosynthetic pathway data (Chang et al., 2016). Screening and validation are essential for identifying potential drug candidates and for understanding the therapeutic potential of natural products.
Overall, bioinformatics plays a critical role in phytochemical discovery by providing researchers with the tools and resources needed to identify , characterize, and develop these compounds for use in medicine, agriculture, and other industries (Fang et al., 2018). By combining bioinformatics with other experimental techniques, researchers can accelerate
the discovery and development of new phytochemicals with potential therapeutic benets.
Bioinformatics plays a critical role in natural product discovery by providing researchers
with the tools and resources needed to efciently identify, characterize, and develop novel
natural products for a wide range of applications.
10.5 INTEGRATION OF OMICS DATA USING BIOINFORMATICS TOOLS AND
PIPELINES
Integration of omics data is a crucial step in the analysis of biological systems, including natural product biosynthesis. Bioinformatics tools and pipelines are used to integrate different types of omics data, such as genomics, proteomics, transcriptomics, and metabo­lomics, to gain an in depth understanding of biological systemsClick or tap here to enter text.. Here are some of the key bioinformatics tools and pipelines used for the integration of OMICs data:
• Pathway analysis tools: Pathway analysis tools, such as Kyoto Encyclopedia of Genes and Genomes and Reactome, provide a comprehensive overview of metabolic and signaling pathways. These tools allow researchers to integrate omics data and identify pathways that are altered under different conditions, such as natural product biosynthesis. By analyzing the expression of genes and metabolites involved in
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particular pathways, researchers can identify key regulators and potential targets for drug discovery (dos Santos et al., 2016b; Park et al., 2016).
• Network analysis tools: Network analysis tools, such as Cytoscape and STRING, enable the visualization and analysis of complex biological networks. These tools allow researchers to integrate different types of omics data and identify nodes that are highly connected within the network. By analyzing the interactions between genes, proteins, and metabolites, researchers can identify key regulators and poten­tial targets for drug discovery (Brohée et al., 2008; Laukens et al., 2015).
• Machine learning pipelines: Machine learning pipelines, such as Random Forest and Support Vector Machines, enable the prediction of biological properties, such as natural product activities, based on omics data. By integrating genomics, tran­scriptomics, proteomics, and metabolomics data, researchers can develop machine­learning models to predict the properties of novel natural products. These models can be used to prioritize natural products for further experimental validation (Brohée et al., 2008; Arjmand et al., 2022).
• Metabolic flux analysis: Metabolic flux analysis or fluxomics is the physiological analog of its siblings’ transcriptomics, proteomics, and metabolomics in the modern “omics age.” Fluxomics blends in vivo observations of metabolic fluxes with
various networks. By integrating transcriptomics, proteomics, and metabolomics data, researchers can estimate the fluxes of metabolites and identify key enzymes involved in natural product biosynthesis. This approach can be used to identify potential targets for metabolic engineering to increase the yield of natural products (Winter and Krömer, 2013).
Overall, the integration of omics data using bioinformatics tools and pipelines is crucial for gaining a comprehensive understanding of biological systems, including natural product biosynthesis. By combining these approaches with traditional experimental techniques, researchers can accelerate the discovery and development of novel natural products with potential therapeutic applications.
10.6 LIMITATIONS AND CHALLENGES OF USING BIOINFORMATICS IN NATURAL
PRODUCT DISCOVERY
While bioinformatics has greatly advanced natural product discovery, there are still some limitations and challenges associated with this approach. It is crucial to keep in mind that omics-based approach may only be able to see the proverbial tip of the iceberg, which may not be sufficient to pinpoint precise molecular targets within intricate biochemical and physiological networks (Hirota et al., 2012; Y in and Kassner , 2016). As a result, it is essential to integrate several strategies into the system in a complementary or synergistic way . A range of potential natural product targets and action mechanisms can also be clarified, described, and evaluated at the same time using methods utilizing integrated multiomics methodology for the successful development of a drug candidate (Hirota et al., 2012). Since target proteins and biochemical, physiological, or other processes are not genetically conserved across humans, target identification techniques have some limitations, and further validation
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procedures must be carried out in human or other mammalian systems (Chang et al., 2016; Rodrigues et al., 2016).

10.7 FUTURE PERSPECTIVES AND POTENTIAL IMPACT OF OMICS IN NATURAL PRODUCT-BASED DRUG DISCOVERY

The application of various omics technologies has revolutionized natural product-based drug discovery. These approaches have allowed researchers to identify new natural products, characterize biosynthetic pathways, and understand the mode of action of natural products. As technology continues to advance, it is important to consider the potential future direc­tions and impact of omics in natural product-based drug discovery (Guo et al., 2020).
10.8 POTENTIAL FUTURE DIRECTIONS FOR OMICS IN NATURAL PRODUCT
DISCOVERY
• Integration of omics data: There is a need to integrate data from multiple omics approaches to gain a comprehensive understanding of natural products and their mechanisms of action. Integration of data from genomics, transcriptomics, proteomics, and metabolomics can provide a more complete picture of natural products, their biosynthetic pathways, and their interactions with biological systems (Luo et al., 2019; Hu et al., 2020).
• Application of machine learning: The use of machine learning algorithms can help in analyzing complex omics data sets and identifying potential targets and lead compounds. Machine learning can also be used to predict the properties of natural products, such as their bioactivity and toxicity (Saldívar-González et al., 2021).
• Integration of synthetic biology: Synthetic biology approaches can be used to manipulate natural product biosynthetic pathways and create new natural products with improved properties (Jamieson et al., 2021).

10.9 POTENTIAL IMPACT ON DRUG DISCOVERY AND DEVELOPMENT

• Discovery of novel natural products: Omics approaches can help in discovering novel natural products with potential therapeutic applications. These approaches can also help in identifying natural products that can be used as lead compounds for drug development (Thomford et al., 2018).
• Understanding the mode of action: Omics approaches can provide insights into the mechanisms of action of natural products. This knowledge can be used to develop more effective drugs and optimize dosing (Katz and Baltz, 2016; Thomford et al., 2018).
• Development of personalized medicine: Omics approaches can be used to identify biomarkers that can be used to develop personalized medicine. This can improve
patient outcomes and reduce the risk of adverse effects (Beyoğlu and Idle, 2020).
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• Optimization of drug development: Omics approaches can be used to optimize drug development by identifying potential targets and lead compounds early in the drug discovery process. This can reduce the time and cost required for drug develop­ment (Paananen and Fortino, 2020).

10.10 CONCLUSION

It can be concluded that Omics approaches have transformed natural product-based drug discovery and have the potential to continue to do so in the future. Integration of data from multiple omics approaches, application of machine learning algorithms, advancements in imaging techniques, and integration of synthetic biology are some of the potential future directions for omics in natural product discovery. The impact of omics on drug discovery and development includes the discovery of novel natural products, understanding their mode of action, development of personalized medicine, and optimization of drug development. The continued development of omics technologies and their integration into drug discovery pipelines holds great promise for the future of natural product-based drug discovery .

KEYWORDS

• natural products
• omics platforms
• genomics
• transcriptomics
• mass spectrometry

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