Related Experiment Video
Updated: Jul 13, 2026
05:17
Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
Published on: February 9, 2021
Cytotoxic germacranolide sesquiterpene from Inula cappa
Hong-Gang Xie1, Hong Chen, Bo Cao
1Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Chemical & Pharmaceutical Bulletin
|August 2, 2007
Summary
A novel germacranolide, inulacappolide, isolated from Inula cappa, exhibits significant antiproliferative effects against human cancer cell lines. This discovery offers potential for new cancer therapeutic development.
Area of Science:
- Natural Product Chemistry
- Pharmacology
- Medicinal Chemistry
Background:
- Inula cappa is a plant source of bioactive compounds.
- Germacranolides are a class of sesquiterpene lactones with diverse biological activities.
- Cancer remains a significant global health challenge, necessitating novel therapeutic agents.
Purpose of the Study:
- To isolate and characterize new chemical entities from Inula cappa.
- To evaluate the in vitro antiproliferative activity of isolated compounds against human cancer cell lines.
Main Methods:
- Phytochemical investigation of Inula cappa EtOH extract.
- Structure elucidation of the new compound using comprehensive spectroscopic techniques (IR, HR-ESI/MS, NMR, NOESY).
- In vitro antiproliferative assays using HeLa, K562, and KB cell lines.
Main Results:
- Isolation and identification of a new germacranolide, inulacappolide (1), a rare 1(10)-saturated type.
- Inulacappolide (1) demonstrated potent antiproliferative effects against human cervical cancer (HeLa), leukemia (K562), and nasopharyngeal carcinoma (KB) cell lines.
- IC(50) values for inulacappolide were 1.2 microM (HeLa), 3.8 microM (K562), and 5.3 microM (KB).
Conclusions:
- Inulacappolide is a novel germacranolide with significant in vitro antiproliferative activity.
- The findings suggest that inulacappolide holds promise as a lead compound for anticancer drug development.
- Further research into the mechanism of action and in vivo efficacy is warranted.
Related Concept Videos
01:27Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
01:10Drugs that Destabilize Microtubules
Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...
01:15Drugs that Stabilize Microtubules
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...