Following a veterinary and behavioral survey of chimpanzees from a natural population in Uganda, leaf samples of Trichilia rubescens were collected because of the unusual method of ingestion observed. The methanolic crude extract of T. rubescens leaves exhibited significant antimalarial activity in vitro. Bioassay-directed fractionation provided two new limonoids, trichirubines A and B. A greater understanding of the role of secondary compounds in the primate diet may be helpful in recovering naturally occurring compounds of medicinal significance for human medicine.
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http://dx.doi.org/10.1128/AAC.48.8.3196-3199.2004 | DOI Listing |
Phytomedicine
December 2024
Jinan Central Hospital, Shandong First Medical University, Jinan 250013, Shandong, China. Electronic address:
Background: The dysregulation of ribosome biogenesis has been extensively identified in various cancers, making it emerge as a hallmark of malignant cells. This highlights the potential of targeting ribosome biogenesis as an effective approach for treating cancer patients. Although chemotherapy drugs including doxorubicin and cisplatin often target ribosome biogenesis to induce DNA damage or inhibit tumor cell proliferation, they are associated with significant side effects.
View Article and Find Full Text PDFPLoS One
December 2024
School of Biological Sciences, Nanyang Technological University, Singapore, Singapore.
Immunofluorescence is highly dependent on antibody-antigen interactions for accurate visualization of proteins and other biomolecules within cells. However, obtaining antibodies with high specificity and affinity for their target proteins can be challenging, especially for targets that are complex or naturally present at low levels. Therefore, we developed AptaFluorescence, a protocol that utilizes fluorescently labeled aptamers for in vitro biomolecule visualization.
View Article and Find Full Text PDFJ Biomol Struct Dyn
December 2024
School of Biotechnology, KIIT Deemed To be University, Bhubaneswar, Odisha, India.
The FIKK protein family, encompassing 21 serine-threonine protein kinases, is a distinctive cluster exclusive to the Apicomplexa phylum. Predominantly located in which is a malarial parasite, with a solitary gene identified in a distinct apicomplexan species, this family derives its nomenclature from - phenylalanine, isoleucine, lysine, lysine (FIKK), a conserved amino acid motif. Integral to the parasite's life cycle and consequential to malaria pathogenesis, the absence of orthologous proteins in eukaryotic organisms designates it as a promising antimalarial drug target.
View Article and Find Full Text PDFJ Biol Chem
December 2024
Department of Obstetrics, Key Laboratory of Birth Defects and Related Disease of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second Hospital, Sichuan University, Chengdu 610041, China; NHC key Laboratory of Chronobiology, Sichuan University, Chengdu 610041, China. Electronic address:
Malaria caused by Plasmodium infection poses a serious hazard to human health. P. falciparum equilibrative nucleoside transporter 1 (PfENT1), which mediates nucleoside uptake, is essential for the growth and proliferation of Plasmodium parasites, suggesting that PfENT1 is a potential antimalarial target.
View Article and Find Full Text PDFJ Med Chem
December 2024
Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical and Medicinal Chemistry, Universitätsstr. 1, 40225 Düsseldorf, Germany.
Malaria continues to pose a significant burden on populations in endemic areas and requires innovative treatment options. Here, we report the synthesis and preclinical evaluation of the novel 3-hydroxypropanamidine (HPA) , which shows excellent antiplasmodial activity against drug-sensitive and -resistant strains. Moreover, in various human cell lines, the compound shows no cytotoxicity and excellent parasite selectivity.
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