Quimioprospecção de cianobactérias brasileiras utilizando metabolômica e ensaios biológicos DOI Creative Commons

Márcio Barczyszyn Weiss

Published: Sept. 22, 2023

Natural products are an important source of molecules with therapeutic and biotechnological applications.However, the inherent complexity biological matrices increasing rediscovery rates challenge search for new bioactive compounds.Exploring specimens biodiversity applying computational tools imperative identifying promising chemical entities.In this study, we proposed to catalyze prospecting process demonstrate potential Brazilian cyanobacteria as a molecules.Nine strains freshwater were cultivated, extracted, fractionated.Extracts fractions tested cytotoxic against microcrustacean Artemia salina, antiproliferative human melanoma cell lines, Leishmania (L.) amazonensis promastigotes.Samples analyzed in parallel via UPLC-HRMS/MS.A molecular network was created using GNPS platform.Dereplication guided by DAFdiscovery, tool that, through fusion information from LC-MS/MS data metadata containing obtained bioassays, indexed which features correlate activity.Annotation followed database performed SIRIUS software.Brasilonema octagenarum, Anagnostidinema amphibium, Nostoc sp., Komarekiella atlantica selected following approach due their novelty bioactivity.

Language: Английский

Invalid SMILES are beneficial rather than detrimental to chemical language models DOI Creative Commons
Michael A. Skinnider

Nature Machine Intelligence, Journal Year: 2024, Volume and Issue: 6(4), P. 437 - 448

Published: March 29, 2024

Abstract Generative machine learning models have attracted intense interest for their ability to sample novel molecules with desired chemical or biological properties. Among these, language trained on SMILES (Simplified Molecular-Input Line-Entry System) representations been subject the most extensive experimental validation and widely adopted. However, these what is perceived be a major limitation: some fraction of strings that they generate are invalid, meaning cannot decoded structure. This shortcoming has motivated remarkably broad spectrum work designed mitigate generation invalid correct them post hoc. Here I provide causal evidence produce outputs not harmful but instead beneficial models. show provides self-corrective mechanism filters low-likelihood samples from model output. Conversely, enforcing valid produces structural biases in generated molecules, impairing distribution limiting generalization unseen space. Together, results refute prevailing assumption reframe as feature, bug.

Language: Английский

Citations

18

Toward a unified benchmark and framework for deep learning-based prediction of nuclear magnetic resonance chemical shifts DOI

Fanjie Xu,

Wentao Guo, Feng Wang

et al.

Nature Computational Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

Language: Английский

Citations

2

Approaches, Strategies and Procedures for Identifying Anti-Inflammatory Drug Lead Molecules from Natural Products DOI Creative Commons
Tenzin Jamtsho, Karma Yeshi, Matthew J. Perry

et al.

Pharmaceuticals, Journal Year: 2024, Volume and Issue: 17(3), P. 283 - 283

Published: Feb. 22, 2024

Natural products (NPs) have played a vital role in human survival for millennia, particularly their medicinal properties. Many traditional medicine practices continue to utilise crude plants and animal treating various diseases, including inflammation. In contrast, contemporary focuses more on isolating drug-lead compounds from NPs develop new better treatment drugs inflammatory disorders such as bowel diseases. There is an ongoing search drug leads there still no cure many conditions. Various approaches technologies are used discoveries NPs. This review comprehensively anti-inflammatory small molecules describes the key strategies identifying, extracting, fractionating small-molecule leads. also discusses (i) most recently available techniques, artificial intelligence (AI), (ii) machine learning, computational discovery; (iii) provides models cell lines in-vitro in-vivo assessment of potential

Language: Английский

Citations

11

Matrix free laser desorption ionization coupled to trapped ion mobility mass spectrometry: An innovative approach for isomer differentiation and molecular network visualization DOI Creative Commons
Manon Meunier,

Martina Haack,

Dania Awad

et al.

Talanta, Journal Year: 2025, Volume and Issue: unknown, P. 127626 - 127626

Published: Jan. 1, 2025

Language: Английский

Citations

1

Combinatorial biosynthesis for the engineering of novel fungal natural products DOI Creative Commons
Elizabeth Skellam, Sanjeevan Rajendran, Lei Li

et al.

Communications Chemistry, Journal Year: 2024, Volume and Issue: 7(1)

Published: April 18, 2024

Abstract Natural products are small molecules synthesized by fungi, bacteria and plants, which historically have had a profound effect on human health quality of life. These natural evolved over millions years resulting in specific biological functions that may be interest for pharmaceutical, agricultural, or nutraceutical use. Often need to structurally modified make them suitable applications. Combinatorial biosynthesis is method alter the composition enzymes needed synthesize product diversified molecules. In this review we discuss different approaches combinatorial via engineering fungal biosynthetic pathways. We highlight knowledge gained from these studies provide examples new-to-nature bioactive molecules, including using combinations non-fungal enzymes.

Language: Английский

Citations

7

AI-driven drug discovery from natural products DOI Creative Commons

Feng-Lei Duan,

Chun‐Bao Duan,

Huilin Xu

et al.

Advanced Agrochem, Journal Year: 2024, Volume and Issue: 3(3), P. 185 - 187

Published: June 25, 2024

The latest review published in Nature Reviews Drug Discovery by Michael W. Mullowney and co-authors focuses on the use of artificial intelligence techniques, specifically machine learning, natural product drug discovery. authors discussed various applications AI this field, such as genome metabolome mining, structural characterization products, predicting targets biological activities these compounds. They also highlighted challenges associated with creating managing large datasets for training algorithms, well strategies to address obstacles. Additionally, examine common pitfalls algorithm offer suggestions avoiding them.

Language: Английский

Citations

5

Automated Diagnosis and Phenotyping of Tuberculosis Using Serum Metabolic Fingerprints DOI Creative Commons
Yajing Liu, Ruimin Wang, Chao Zhang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(39)

Published: Aug. 19, 2024

Abstract Tuberculosis (TB) stands as the second most fatal infectious disease after COVID‐19, effective treatment of which depends on accurate diagnosis and phenotyping. Metabolomics provides valuable insights into identification differential metabolites for However, TB phenotyping remain great challenges due to lack a satisfactory metabolic approach. Here, metabolomics‐based diagnostic method rapid detection is reported. Serum fingerprints are examined via an automated nanoparticle‐enhanced laser desorption/ionization mass spectrometry platform outstanding by its speed (measured in seconds), minimal sample consumption (in nanoliters), cost‐effectiveness (approximately $3). A panel 14 m z −1 features identified biomarkers 4 Based acquired biomarkers, models constructed through advanced machine learning algorithms. The robust model yields 97.8% (95% confidence interval (CI), 0.964‐0.986) area under curve (AUC) 85.7% CI, 0.806‐0.891) AUC In this study, serum biomarker panels revealed develop tool with desirable performance phenotyping, may expedite implementation end‐TB strategy.

Language: Английский

Citations

4

New drug discovery and development from natural products: Advances and strategies DOI
Yixin Wang,

Fan Wang,

Wenxiu Liu

et al.

Pharmacology & Therapeutics, Journal Year: 2024, Volume and Issue: 264, P. 108752 - 108752

Published: Nov. 16, 2024

Language: Английский

Citations

4

Computer-Aided Drug Design in Research on Chinese Materia Medica: Methods, Applications, Advantages, and Challenges DOI Creative Commons
Ban Chen, Shuangshuang Liu, Hu Xia

et al.

Pharmaceutics, Journal Year: 2025, Volume and Issue: 17(3), P. 315 - 315

Published: March 1, 2025

Chinese materia medica (CMM) refers to the medicinal substances used in traditional medicine. In recent years, CMM has become globally prevalent, and scientific research on increasingly garnered attention. Computer-aided drug design (CADD) been employed Western medicine for many contributing significantly its progress. However, role of CADD not systematically reviewed. This review briefly introduces methods from perspectives computational chemistry (including quantum chemistry, molecular mechanics, mechanics/molecular mechanics) informatics cheminformatics, bioinformatics, data mining). Then, it provides an exhaustive discussion applications these through rich cases. Finally, outlines advantages challenges research. conclusion, despite current challenges, still offers unique over experiments. With development industry computer science, especially driven by artificial intelligence, is poised play pivotal advancing

Language: Английский

Citations

0

Mass spectral database-based methodologies for the annotation and discovery of natural products DOI
Fan Yang, Liang Zhang, Hong-fu Zhao

et al.

Chinese Journal of Natural Medicines, Journal Year: 2025, Volume and Issue: 23(4), P. 410 - 420

Published: April 1, 2025

Language: Английский

Citations

0