Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Skin Microbiota01:27

The Skin Microbiota

The human skin serves as a complex ecosystem inhabited by a diverse community of microorganisms, including bacteria, fungi, and viruses. This microbiome plays a critical role in maintaining skin health and defending against pathogenic invaders. The composition of microbial communities varies significantly across different regions of the body, influenced primarily by the local levels of moisture and sebum.Regional Variation in Skin MicrobiotaCutibacterium acnes predominantly colonizes sebaceous...
Bacterial Phylum Spirochaetes01:30

Bacterial Phylum Spirochaetes

Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
Esters to Carboxylic Acids: Saponification01:25

Esters to Carboxylic Acids: Saponification

Esters can be hydrolyzed to carboxylic acids under acidic or basic conditions. Base-promoted hydrolysis of esters is a nucleophilic acyl substitution reaction in which esters react with an aqueous base, followed by an acid to give carboxylic acids. This reaction is also known as saponification because it forms the basis for making soaps from fats.
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
Antifungal Agents01:15

Antifungal Agents

Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
Biosynthesis of Lipids01:29

Biosynthesis of Lipids

Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis pathway, which...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Targeted Discovery of β‑Branched Conjugated Polyketides from Bacteria Based on Genomic and Metabolomic Hallmarks.

JACS Au·2026
Same author

Paulobutalipin, a Lipid Accumulation Inhibitor from a <i>Streptomyces sp.</i>

Journal of natural products·2026
Same author

Isolation, structure elucidation, and absolute configuration of 5,6-dioxygenated aaptamine derivatives from the marine sponge Aaptos sp.

Phytochemistry·2025
Same author

Exploring mitophagy levels in Drosophila Malpighian tubules unveils the pivotal role of mitophagy in kidney function and diabetic kidney disease.

Experimental & molecular medicine·2025
Same author

Discovery of Spirosnuolides A-D, Type I/III Hybrid Polyketide Spiro-Macrolides for a Chemotherapeutic Lead against Lung Cancer.

JACS Au·2024
Same author

Tunicamycins from Marine-Derived <i>Streptomyces bacillaris</i> Inhibit MurNAc-Pentapeptide Translocase in <i>Staphylococcus aureus</i>.

Marine drugs·2024

Related Experiment Video

Updated: May 30, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
07:59

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

Sesterterpenes from the tropical sponge Coscinoderma sp.

Jaemin Bae1, Ju-Eun Jeon, Yeon-Ju Lee

  • 1Natural Products Research Institute, College of Pharmacy, Seoul National University , San 56-1, Sillim, Gwanak, Seoul 151-742, Korea.

Journal of Natural Products
|August 11, 2011
PubMed
Summary
This summary is machine-generated.

Marine sponges yielded new sesterterpenes with potential medicinal applications. These compounds showed moderate cytotoxicity and enzyme inhibition, highlighting significant structure-activity relationships for drug discovery.

More Related Videos

A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms
16:03

A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms

Published on: January 11, 2015

A Method for Extracting Pigments from Squid Doryteuthis pealeii
11:03

A Method for Extracting Pigments from Squid Doryteuthis pealeii

Published on: November 9, 2016

Related Experiment Videos

Last Updated: May 30, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
07:59

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms
16:03

A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms

Published on: January 11, 2015

A Method for Extracting Pigments from Squid Doryteuthis pealeii
11:03

A Method for Extracting Pigments from Squid Doryteuthis pealeii

Published on: November 9, 2016

Area of Science:

  • Marine Natural Products Chemistry
  • Organic Chemistry
  • Pharmacology

Background:

  • Marine sponges are a rich source of structurally diverse secondary metabolites.
  • Sesterterpenes, a class of C20 terpenoids, are known for their broad range of biological activities.
  • The sponge genus Coscinoderma has previously yielded bioactive compounds.

Purpose of the Study:

  • To isolate and characterize new sesterterpenes from the marine sponge Coscinoderma sp.
  • To evaluate the biological activities of the isolated compounds.
  • To investigate structure-activity relationships.

Main Methods:

  • Isolation of compounds using chromatographic techniques.
  • Structure elucidation using comprehensive spectroscopic analyses (NMR, MS).
  • Evaluation of cytotoxicity against K562 cell line.
  • Enzyme inhibition assays (isocitrate lyase, sortase A, Na+/K+-ATPase).

Main Results:

  • Eight new sesterterpenes, including pentaprenyl hydroquinones, were isolated.
  • Seven known sesterterpenes of related structural classes were identified.
  • New compounds are derivatives of halisulfates and suvanine.
  • Compounds exhibited moderate cytotoxicity and inhibitory activities against key enzymes.
  • Significant structure-activity relationships were observed.

Conclusions:

  • Coscinoderma sp. from Micronesia is a source of novel sesterterpenes.
  • The isolated compounds possess cytotoxic and enzyme inhibitory properties.
  • Further investigation into these sesterterpenes may lead to the development of new therapeutic agents.