Evidence map›Paper›PMID 26270237›Full record

ArticleACS chemical biology2015

Genome-Directed Lead Discovery: Biosynthesis, Structure Elucidation, and Biological Evaluation of Two Families of Polyene Macrolactams against Trypanosoma brucei.

Christopher J Schulze, Mohamed S Donia, Jair L Siqueira-Neto, Debalina Ray, Jevgenij A Raskatov, Richard E Green, James H McKerrow, Michael A Fischbach, Roger G Linington

Abstract read
In one paragraph

Article in ACS chemical biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Marine Natural Products as Novel Treatments for Parasitic Diseases.Handbook of experimental pharmacology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Christopher J SchulzeDepartment of Chemistry and Biochemistry, University of California Santa Cruz , Santa Cruz, California 95064, United States.
Mohamed S DoniaDepartment of Bioengineering and Therapeutic Sciences and the California Institute for Quantitative Biosciences, University of California San Francisco , San Francisco, California 94158, United States.
Jair L Siqueira-NetoSkaggs School of Pharmacy, University of California San Diego , San Diego, California 92093, United States.
Debalina RayDepartment of Pathology, University of California San Francisco , San Francisco, California 94158, United States.
Jevgenij A RaskatovDepartment of Chemistry and Biochemistry, University of California Santa Cruz , Santa Cruz, California 95064, United States.
Richard E GreenDepartment of Biomolecular Engineering, University of California Santa Cruz , Santa Cruz, California 95064, United States.
James H McKerrowSkaggs School of Pharmacy, University of California San Diego , San Diego, California 92093, United States.
Michael A FischbachDepartment of Bioengineering and Therapeutic Sciences and the California Institute for Quantitative Biosciences, University of California San Francisco , San Francisco, California 94158, United States.
Roger G LiningtonDepartment of Chemistry and Biochemistry, University of California Santa Cruz , Santa Cruz, California 95064, United States.

Funding

Identifying and characterizing small molecules from the human microbiomeDP2OD007290 · OD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI FISCHBACH, MICHAEL ANDREW · 2010 to 2010
$2.3M
NIH HHS DP2 OD007290
6 · The paper itself

Abstract

Marine natural products are an important source of lead compounds against many pathogenic targets. Herein, we report the discovery of lobosamides A-C from a marine actinobacterium, Micromonospora sp., representing three new members of a small but growing family of bacterially produced polyene macrolactams. The lobosamides display growth inhibitory activity against the protozoan parasite Trypanosoma brucei (lobosamide A IC50 = 0.8 μM), the causative agent of human African trypanosomiasis (HAT). The biosynthetic gene cluster of the lobosamides was sequenced and suggests a conserved cluster organization among the 26-membered macrolactams. While determination of the relative and absolute configurations of many members of this family is lacking, the absolute configurations of the lobosamides were deduced using a combination of chemical modification, detailed spectroscopic analysis, and bioinformatics. We implemented a "molecules-to-genes-to-molecules" approach to determine the prevalence of similar clusters in other bacteria, which led to the discovery of two additional macrolactams, mirilactams A and B from Actinosynnema mirum. These additional analogs have allowed us to identify specific structure-activity relationships that contribute to the antitrypanosomal activity of this class. This approach illustrates the power of combining chemical analysis and genomics in the discovery and characterization of natural products as new lead compounds for neglected disease targets.

Indexed as

Drug DiscoveryAnimalsAntiprotozoal AgentsDrug Evaluation, PreclinicalHumansInhibitory Concentration 50LactamsMolecular StructureMultigene FamilyPolyenesTrypanosoma brucei bruceiAntiprotozoal AgentsLactamsPolyenes

Identifiers

PMID26270237
PMCPMC7505085

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.