Two undescribed oleanane-type saponins, julibrosides K-L, along with three undescribed oleanane-type prosapogenins, julibrosides M-O, were isolated from the stem bark of Albizia julibrissin Durazz. and the mild alkaline hydrolysate of the total saponin, respectively. Their structures were established by extensive analysis of 1D and 2D NMR experiments (COSY, TOCSY, HSQC, HMBC, and HSQC-TOCSY) and mass spectrometry. Furthermore, the cytotoxic activities of the isolated compounds against BGC-823, A549, HCT-116, and HepG2 cell lines were evaluated, and julibroside L showed significant cytotoxic activities against the four cancer cell lines with IC values of 5.77, 4.80, 4.26, and 4.93 μM, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.phytochem.2021.112674 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Metabolically activated and highly polyfunctional intratumoral VISTA regulatory B cells are associated with tumor recurrence in early-stage NSCLC.
Mol Cancer
January 2025
Department of Medical and Surgical Sciences for Children and Adults, University of Modena and Reggio Emilia, via Campi, 287, Modena, 41125, Italy.
B cells have emerged as central players in the tumor microenvironment (TME) of non-small cell lung cancer (NSCLC). However, although there is clear evidence for their involvement in cancer immunity, scanty data exist on the characterization of B cell phenotypes, bioenergetic profiles and possible interactions with T cells in the context of NSCLC. In this study, using polychromatic flow cytometry, mass cytometry, and spatial transcriptomics we explored the intricate landscape of B cell phenotypes, bioenergetics, and their interaction with T cells in NSCLC.
View Article and Find Full Text PDFSingle-cell transcriptomics unveils multifaceted immune heterogeneity in early-onset versus late-onset cervical cancer.
World J Surg Oncol
January 2025
Department of Oncology, Xiangya Hospital, Central South University, Changsha, Hunan, China.
Early-onset (EOCC) and late-onset cervical cancers (LOCC) represent two clinically distinct subtypes, each defined by unique clinical manifestations and therapeutic responses. However, their immunological profiles remain poorly explored. Herein, we analyzed single-cell transcriptomic data from 4 EOCC and 4 LOCC samples to compare their immune architectures.
View Article and Find Full Text PDFToward curing neurological autoimmune disorders: Biomarkers, immunological mechanisms, and therapeutic targets.
Neuron
January 2025
Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA; Center for Multiple Sclerosis and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA. Electronic address:
Autoimmune neurology is a rapidly expanding field driven by the discovery of neuroglial autoantibodies and encompassing a myriad of conditions affecting every level of the nervous system. Traditionally, autoantibodies targeting intracellular antigens are considered markers of T cell-mediated cytotoxicity, while those targeting extracellular antigens are viewed as pathogenic drivers of disease. However, recent advances highlight complex interactions between these immune mechanisms, suggesting a continuum of immunopathogenesis.
View Article and Find Full Text PDFDiketopiperazine/piperidine alkaloid as a potential broad-spectrum coronaviral entry inhibitor identified by supercomputer-based virtual screening from a large natural product-based library.
Biomed Pharmacother
January 2025
Department of Pharmaceutical Biology, Institute of Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University, Staudinger Weg 5, Mainz 55128, Germany. Electronic address:
The COVID-19 pandemic has underscored the urgent need for antiviral agents capable of targeting a broad range of coronaviruses, including emerging variants of SARS-CoV-2. While vaccines have been pivotal, the search for drugs that can prevent viral entry into host cells remains crucial, especially against evolving viral forms and other coronaviruses. In this study, we investigated natural products as a source of antiviral agents, focusing on their potential to block the spike protein's receptor-binding domain (RBD).
View Article and Find Full Text PDFNovel Dehydroabietylamine C-Ring Schiff Base Derivatives: Synthesis, Antiproliferative activity, DNA binding and Molecular docking.
Chem Asian J
January 2025
Nanjing Forestry University, College of Science, CHINA.
A series of Dehydroabietylamine (DHAA) C-ring Schiff derivatives, L3-L20, were synthesized and their in vitro cytotoxic activity against the human tumor cell lines cervix HeLa, breast MCF-7, lung A549, liver HepG2, and the nonmalignant cell line umbilical vein HUVEC was investigated. Most of the compounds showed varying degrees of anticancer activity against HeLa cell lines while demonstrating lower toxicity to normal HUVEC cells compared to DHAA and doxorubicin (DOX), especially compound L19, which not only enhanced the anticancer activity of DHAA, but also significantly reduced the toxicity to normal cells, achieving a selectivity index (SI) 118 times higher than that of DHAA and 245 times higher than that of DOX. In addition, compound L19 induced apoptosis in HeLa cells in a dose-dependent manner and arrested the cell cycle in S phase.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!