Chemistry, Medicinal

Review Biochemistry & Molecular Biology

A critical review on the use of DP4+in the structural elucidation of natural products: the good, the bad and the ugly. A practical guide

Maribel O. Marcarino, Soledad Cicetti, Maria M. Zanardi, Ariel M. Sarotti

Summary: This study discusses the use of DP4+ in the elucidation of natural product structures, highlighting both its strengths and weaknesses, and providing recommendations on how to obtain optimal results. Research shows that DP4+ plays a significant role in resolving disputed natural product structures.

NATURAL PRODUCT REPORTS (2022)

Article Chemistry, Medicinal

3CL Protease Inhibitors with an Electrophilic Arylketone Moiety as Anti-SARS-CoV-2 Agents

Sho Konno, Kiyotaka Kobayashi, Miki Senda, Yuta Funai, Yuta Seki, Ikumi Tamai, Laura Schaekel, Kyousuke Sakata, Thanigaimalai Pillaiyar, Akihiro Taguchi, Atsuhiko Taniguchi, Michael Guetschow, Christa E. Mueller, Koh Takeuchi, Mikako Hirohama, Atsushi Kawaguchi, Masaki Kojima, Toshiya Senda, Yoshiyuki Shirasaka, Wataru Kamitani, Yoshio Hayashi

Summary: This study reports the discovery of peptidomimetic compounds that exhibit potent activity against SARS-CoV-2 3CL protease. The most effective inhibitor, YH-53, was found to block virus replication. Structural analysis and additional experimental studies suggest that YH-53 has the potential to be a leading candidate for treating COVID-19.

JOURNAL OF MEDICINAL CHEMISTRY (2022)

Review Biochemistry & Molecular Biology

Bioactive Compounds of Citrus Fruits: A Review of Composition and Health Benefits of Carotenoids, Flavonoids, Limonoids, and Terpenes

Ramesh Kumar Saini, Arina Ranjit, Kavita Sharma, Parchuri Prasad, Xiaomin Shang, Karekal Girinur Mallikarjuna Gowda, Young-Soo Keum

Summary: Increasing consumption of fruits, vegetables, and whole grains reduces the risk of metabolic syndrome-related diseases, such as neurodegenerative diseases, cardiovascular disease, diabetes, and cancer. Citrus fruits, rich in carotenoids, flavonoids, terpenes, limonoids, and other bioactive compounds, have been shown to have health benefits in preventing metabolic syndrome. Citrus essential oil, containing limonoids and terpenes, also has antioxidant, antimicrobial, and flavoring properties. This review provides a comprehensive overview of the composition and health benefits of citrus bioactives.

ANTIOXIDANTS (2022)

Review Chemistry, Medicinal

A Brief Review of Phenolic Compounds Identified from Plants: Their Extraction, Analysis, and Biological Activity

Yuanyuan Zhang, Ping Cai, Guanghui Cheng, Yongqiang Zhang

Summary: This review gathers and systematizes available information on phenolic compounds from plants, including different types, extraction and analysis methods, with a focus on their potential biological activities. It also suggests research directions and problems that should be addressed for further study on phenolic compounds.

NATURAL PRODUCT COMMUNICATIONS (2022)

Review Chemistry, Medicinal

A review in radiomics: Making personalized medicine a reality via routine imaging

Julien Guiot, Akshayaa Vaidyanathan, Louis Deprez, Fadila Zerka, Denis Danthine, Anne-Noelle Frix, Philippe Lambin, Fabio Bottari, Nathan Tsoutzidis, Benjamin Miraglio, Sean Walsh, Wim Vos, Roland Hustinx, Marta Ferreira, Pierre Lovinfosse, Ralph T. H. Leijenaar

Summary: Radiomics is a method for quantitatively analyzing medical images to create diagnostic, prognostic, and/or predictive models. It utilizes sophisticated image analysis tools and statistical methods to extract hidden information in medical images, but caution is needed to avoid overenthusiastic claims and scientific pollution.

MEDICINAL RESEARCH REVIEWS (2022)

Article Plant Sciences

Rehmannioside A improves cognitive impairment and alleviates ferroptosis via activating PI3K/AKT/Nrf2 and SLC7A11/GPX4 signaling pathway after ischemia

Chen Fu, Yifan Wu, Shaojiao Liu, Chaoqin Luo, Yuqiao Lu, Menghan Liu, Lingfeng Wang, Yunling Zhang, Xuemei Liu

Summary: This study aims to investigate the effect of Rehmannioside A on cognitive impairment after ischemia in rats and SH-SY5Y cells, and further evaluate the anti-oxidative and anti-ferroptosis mechanisms.

JOURNAL OF ETHNOPHARMACOLOGY (2022)

Article Chemistry, Medicinal

Rings in Clinical Trials and Drugs: Present and Future

Jonathan Shearer, Jose L. Castro, Alastair D. G. Lawson, Malcolm MacCoss, Richard D. Taylor

Summary: In this study, we conducted a comprehensive analysis of ring compounds and FDA-approved drugs. We found that 67% of small molecules in clinical trials only utilize ring systems that are already present in marketed drugs. Additionally, there are approximately 450,000 unique ring systems derived from synthesized chemical space, but molecules in clinical trials represent only 0.1% of this pool. Furthermore, by making systematic changes to existing drug and clinical trial ring systems, we were able to predict potential future clinical trial ring systems that could cover a significant portion of novel ring systems entering clinical trials.

JOURNAL OF MEDICINAL CHEMISTRY (2022)

Article Biochemistry & Molecular Biology

Interactions between SARS-CoV-2 N-Protein and α-Synuclein Accelerate Amyloid Formation

Slav A. Semerdzhiev, Mohammad A. A. Fakhree, Ine Segers-Nolten, Christian Blum, Mireille M. A. E. Claessens

Summary: The first reported cases suggest a correlation between SARS-CoV-2 infections and Parkinson's disease (PD), but the causal link remains unclear. Through test tube experiments, researchers found that the nucleocapsid protein (N-protein) of SARS-CoV-2 significantly accelerates the aggregation of alpha-synuclein protein, a characteristic feature of PD. These findings indicate a direct molecular interaction between SARS-CoV-2 and alpha-synuclein, providing insight into the observed correlation.

ACS CHEMICAL NEUROSCIENCE (2022)

Review Biochemistry & Molecular Biology

Protein Oxidation in Muscle Foods: A Comprehensive Review

Ruben Dominguez, Mirian Pateiro, Paulo E. S. Munekata, Wangang Zhang, Paula Garcia-Oliveira, Maria Carpena, Miguel A. Prieto, Benjamin Bohrer, Jose M. Lorenzo

Summary: Muscle foods and their products, with their high protein content and essential amino acids, are crucial for meeting the nutritional requirements of humans. However, due to their composition, muscle foods are prone to oxidative degradation, which can negatively impact their quality. Protein oxidation reactions in muscle foods have received less attention compared to lipid oxidation, but understanding and controlling these reactions are vital for the food industry. This review focuses on the mechanisms, factors, and analytical methods related to protein oxidation, as well as the effects of protein oxidation on the physicochemical and nutritional aspects of muscle foods.

ANTIOXIDANTS (2022)

Article Chemistry, Medicinal

Peptidomimetic α-Acyloxymethylketone Warheads with Six-Membered Lactam P1 Glutamine Mimic: SARS-CoV-2 3CL Protease Inhibition, Coronavirus Antiviral Activity, and in Vitro Biological Stability

Bing Bai, Alexandr Belovodskiy, Mostofa Hena, Appan Srinivas Kandadai, Michael A. Joyce, Holly A. Saffran, Justin A. Shields, Muhammad Bashir Khan, Elena Arutyunova, Jimmy Lu, Sardeev K. Bajwa, Darren Hockman, Conrad Fischer, Tess Lamer, Wayne Vuong, Marco J. van Belkum, Zhengxian Gu, Fusen Lin, Yanhua Du, Jia Xu, Mohammad Rahim, Howard S. Young, John C. Vederas, D. Lorne Tyrrell, M. Joanne Lemieux, James A. Nieman

Summary: This study describes novel antiviral compounds against coronaviruses, which have good activity and stability, and show effective inhibition of SARS-CoV-2 replication. They also exhibit better selectivity index and broad-spectrum antiviral activity against different types of coronaviruses.

JOURNAL OF MEDICINAL CHEMISTRY (2022)

Article Chemistry, Medicinal

MolGPT: Molecular Generation Using a Transformer-Decoder Model

Viraj Bagal, Rishal Aggarwal, P. K. Vinod, U. Deva Priyakumar

Summary: The application of deep learning techniques in inverse molecular design for drug design has gained significant attention. In this study, we train a transformer-decoder model, MolGPT, on the next token prediction task using masked self-attention, and demonstrate that it performs on par with other modern machine learning frameworks for generating valid, unique, and novel druglike molecules. We also show that the model can be trained conditionally to control multiple properties of the generated molecules.

JOURNAL OF CHEMICAL INFORMATION AND MODELING (2022)

Review Biochemistry & Molecular Biology

Therapeutic potential of pyrrole and pyrrolidine analogs: an update

N. Jeelan Basha, S. M. Basavarajaiah, K. Shyamsunder

Summary: The chemistry of nitrogen-containing heterocyclic compound pyrrole and pyrrolidine has been extensively studied due to their diverse biological and medicinal importance. Metal complexes of pyrrole, such as chlorophyll, hemoglobin, myoglobin, and cytochrome, play vital roles in living systems. Additionally, many medicinal drugs are derived from pyrrole, pyrrolidine, or their fused analogs. This review focuses on the therapeutic potential of pyrrole and pyrrolidine, particularly in anticancer, anti-inflammatory, antiviral, and antituberculosis applications. It also summarizes recent reports on pyrrole and pyrrolidine analogs and their biological potential.

MOLECULAR DIVERSITY (2022)

Review Biochemistry & Molecular Biology

Secondary metabolites from mangrove-associated fungi: source, chemistry and bioactivities

Senhua Chen, Runlin Cai, Zhaoming Liu, Hui Cui, Zhigang She

Summary: This review summarizes the discoveries of new metabolites isolated from mangrove-associated fungi over the past thirty years, focusing on the bioactivity and unique chemical diversity of these natural products.

NATURAL PRODUCT REPORTS (2022)

Article Biochemistry & Molecular Biology

Molecular Mechanism for the Allosteric Inhibition of the Human Serotonin Transporter by Antidepressant Escitalopram

Weiwei Xue, Tingting Fu, Shengzhe Deng, Fengyuan Yang, Jingyi Yang, Feng Zhu

Summary: This study explored the allosteric modulation mechanism of hSERT using two MD simulation strategies. The results showed that escitalopram enhanced its binding to the orthosteric site by binding to the allosteric site. Additionally, escitalopram occupying the allosteric site also blocked its dissociation from the orthosteric site. A new conformational coupling between extracellular and intracellular salt bridges was also identified. These findings are important for understanding the allosteric modulations of not only hSERT but also other clinically important therapeutic targets.

ACS CHEMICAL NEUROSCIENCE (2022)

Article Biochemistry & Molecular Biology

New benzoxazole derivatives as potential VEGFR-2 inhibitors and apoptosis inducers: design, synthesis, anti-proliferative evaluation, flowcytometric analysis, and in silico studies

Hazem Elkady, Alaa Elwan, Hesham A. El-Mahdy, Ahmed S. Doghish, Ahmed Ismail, Mohammed S. Taghour, Eslam B. Elkaeed, Ibrahim H. Eissa, Mohammed A. Dahab, Hazem A. Mahdy, Mohamed M. Khalifa

Summary: A new series of benzoxazole derivatives with essential pharmacophoric features of VEGFR-2 inhibitors were synthesized and evaluated for their cytotoxic activities. Compound 14b showed high activities against cancer cells and exhibited anti-angiogenic and pro-apoptotic effects.

JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY (2022)

Article Plant Sciences

Cannabinoids Block Cellular Entry of SARS-CoV-2 and the Emerging Variants

Richard B. van Breemen, Ruth N. Muchiri, Timothy A. Bates, Jules B. Weinstein, Hans C. Leier, Scotland Farley, Fikadu G. Tafesse

Summary: Cannabigerolic acid and cannabidiolic acid from hemp have been found to prevent infection by SARS-CoV-2 and its variants. They are orally bioavailable and safe for human use, making them potential candidates for preventing and treating COVID-19.

JOURNAL OF NATURAL PRODUCTS (2022)

Review Biochemistry & Molecular Biology

Carotenoids: Dietary Sources, Extraction, Encapsulation, Bioavailability, and Health Benefits-A Review of Recent Advancements

Ramesh Kumar Saini, Parchuri Prasad, Veeresh Lokesh, Xiaomin Shang, Juhyun Shin, Young-Soo Keum, Ji-Ho Lee

Summary: This review discusses the recent developments in the research on natural carotenoids, including their chemistry, antioxidant activity, extraction methods, encapsulation techniques, and health benefits. The review also highlights the preclinical, clinical, and epidemiological studies on the potential benefits of carotenoids in various diseases.

ANTIOXIDANTS (2022)

Article Chemistry, Medicinal

Structure-Based Optimization of ML300-Derived, Noncovalent Inhibitors Targeting the Severe Acute Respiratory Syndrome Coronavirus 3CL Protease (SARS-CoV-2 3CLPro)

Sang Hoon Han, Christopher M. Goins, Tarun Arya, Woo-Jin Shin, Joshua Maw, Alice Hooper, Dhiraj P. Sonawane, Matthew R. Porter, Breyanne E. Bannister, Rachel D. Crouch, A. Abigail Lindsey, Gabriella Lakatos, Steven R. Martinez, Joseph Alvarado, Wendell S. Akers, Nancy S. Wang, Jae U. Jung, Jonathan D. Macdonald, Shaun R. Stauffer

Summary: Starting from ML300, a structure-based optimization campaign was conducted against the SARS-CoV-2 main protease, resulting in the discovery of compound 41 with antiviral activity. This study provides important insights for the development of antiviral drugs in combating SARS-like coronavirus outbreaks.

JOURNAL OF MEDICINAL CHEMISTRY (2022)

Article Chemistry, Medicinal

Incorporating Selenium into Heterocycles and NaturalProducts-From Chemical Properties to Pharmacological Activities

Wei Hou, Hongtao Xu

Summary: This article summarizes and discusses the relationship between the pharmacological activities and chemical properties of selenium compounds and the strategic incorporation of selenium into organic molecules, as well as provides perspectives on future research directions.

JOURNAL OF MEDICINAL CHEMISTRY (2022)

Article Biochemistry & Molecular Biology

Design and synthesis of thiazolidine-2,4-diones hybrids with 1,2-dihydroquinolones and 2-oxindoles as potential VEGFR-2 inhibitors: in-vitro anticancer evaluation and in-silico studies

Mohammed S. Taghour, Hazem Elkady, Wagdy M. Eldehna, Nehal M. El-Deeb, Ahmed M. Kenawy, Eslam B. Elkaeed, Aisha A. Alsfouk, Mohamed S. Alesawy, Ahmed M. Metwaly, Ibrahim. H. Eissa

Summary: In this study, a thiazolidine-2,4-dione nucleus was combined with effective antitumor moieties to create new hybrids with potential activity against VEGFR-2. Compound 12a showed the strongest inhibitory effect on various cancer cell lines and exhibited high affinity for VEGFR-2. Furthermore, all tested compounds demonstrated high safety profiles in non-cancerous cell lines.

JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY (2022)