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Richness of cultivable endophytic fungi along an altitudinal gradient in wet forests of Costa Rica
(2016-04)
We collected various plant species along an altitudinal gradient ranging from 400 to 2900 m in tropical wet forests of Costa Rica, isolated the associated endophytic fungi, and performed bioinformatic analyses to determine ...
Discovery of cahuitamycins as biofilm inhibitors derived from a convergent biosynthetic pathway
(2016-02-16)
Pathogenic microorganisms often have the ability to attach to a surface, building a complex matrix where they colonize to form a biofilm. This cellular superstructure can display increased resistance to antibiotics and ...
Streptomyces sp. M54: an actinobacteria associated with a neotropical social wasp with high potential for antibiotic production
(2021-01-17)
Abstract Streptomyces symbionts in insects have shown to be a valuable source of new antibiotics. Here,
we report the genome sequence and the potential for antibiotic production of ‘‘Streptomyces sp. M54’’, an Actinobacteria ...
Fungal Endophytes and Their Bioactive Compounds in Tropical Forests of Costa Rica
(2021-04-15)
We present a glimpse of the diversity of endophytic fungi in the tropical forests of Costa Rica and some examples of bioactive compounds obtained from them. We include the characterization of isolates carried out mainly ...
Novel Lobophorins Inhibit Oral Cancer Cell Growth and Induce Atf4- and Chop-Dependent Cell Death in Murine Fibroblasts
(2015-07-06)
As part of the International Cooperative Biodiversity Groups (ICBG) Program, we were interested in identifying biologically active unfolded protein response (UPR) inducing compounds from marine microorganisms isolated from ...
Discovery of nicoyamycin A, an inhibitor of uropathogenic Escherichia coli growth in low iron environments
(2017)
High-throughput screening and activity-guided purification identified nicoyamycin A, a natural product comprised of an uncommon 3-methyl-1,4-dioxane ring incorporated into a desferrioxamine-like backbone via a spiroaminal ...
Actinoramide A Identified as a Potent Antimalarial from Titration-Based Screening of Marine Natural Product Extracts
(2015)
Methods to identify the bioactive diversity within natural product extracts (NPEs) continue to evolve. NPEs constitute complex mixtures of chemical substances varying in structure, composition, and abundance. NPEs can ...
Borrelidin Induces the Unfolded Protein Response in Oral Cancer Cells and Chop-Dependent Apoptosis
(2015)
Oral squamous cell carcinoma (OSCC) is the most common cancer affecting the oral cavity, and US clinics will register about 30,000 new patients in 2015. Current treatment modalities include chemotherapy, surgery, and ...
Diketopiperazines from Costa Rican endolichenic fungus Colpoma sp. CR1465A
(2016-05-15)
Three new diketopiperazines (1–3), cyclo(l-Pro-d-trans-Hyp) (1), cyclo(l-Pro-d-Glu) (2), and cyclo(d-Pro-d-Glu) (3) and five known diketopiperazines (4–8) were isolated from the endolichenic fungus Colpoma sp. CR1465A ...