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Title: Structural basis for selective targeting of leishmanial ribosomes: Aminoglycoside derivatives as promising therapeutics

Journal Article · · Nucleic Acids Research
DOI:https://doi.org/10.1093/nar/gkv821· OSTI ID:1223387
 [1];  [2];  [3];  [4];  [4];  [3];  [5];  [5];  [4];  [3];  [3]
  1. Israel Institute of Technology, Haifa (Israel); Weizmann Institute of Science, Rehovot (Israel)
  2. Weizmann Institute of Science, Rehovot (Israel)
  3. Israel Institute of Technology, Haifa (Israel)
  4. Hebrew Univ.-Hadassah Medical School, Jerusalem (Israel)
  5. Univ. of Michigan Medical School, Ann Arbor, MI (United States)

Leishmaniasis comprises an array of diseases caused by pathogenic species of Leishmania, resulting in a spectrum of mild to life-threatening pathologies. Currently available therapies for leishmaniasis include a limited selection of drugs. This coupled with the rather fast emergence of parasite resistance, presents a dire public health concern. Paromomycin (PAR), a broad-spectrum aminoglycoside antibiotic, has been shown in recent years to be highly efficient in treating visceral leishmaniasis (VL)—the life-threatening form of the disease. While much focus has been given to exploration of PAR activities in bacteria, its mechanism of action in Leishmania has received relatively little scrutiny and has yet to be fully deciphered. In the present study we present an X-ray structure of PAR bound to rRNA model mimicking its leishmanial binding target, the ribosomal A-site. We evaluate PAR inhibitory actions on leishmanial growth and ribosome function, as well as effects on auditory sensory cells, by comparing several structurally related natural and synthetic aminoglycoside derivatives. The results provide insights into the structural elements important for aminoglycoside inhibitory activities and selectivity for leishmanial cytosolic ribosomes, highlighting a novel synthetic derivative, compound 3, as a prospective therapeutic candidate for the treatment of VL.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1223387
Journal Information:
Nucleic Acids Research, Vol. 43, Issue 17; ISSN 0305-1048
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (11)

Structure-Based Design of a Eukaryote-Selective Antiprotozoal Fluorinated Aminoglycoside journal July 2018
Leishmaniasis and various immunotherapeutic approaches journal December 2016
Comprehensive review of chemical strategies for the preparation of new aminoglycosides and their biological activities journal January 2018
Exploring eukaryotic versus prokaryotic ribosomal RNA recognition with aminoglycoside derivatives journal January 2018
Minor components of aminoglycosides: recent advances in their biosynthesis and therapeutic potential journal January 2020
Drug target identification in protozoan parasites journal June 2016
Ribosome‐bound Pub1 modulates stop codon decoding during translation termination in yeast journal May 2017
Enhanced paromomycin efficacy by solid lipid nanoparticle formulation against Leishmania in mice model journal June 2016
Genomic and transcriptomic alterations in Leishmania donovani lines experimentally resistant to antileishmanial drugs journal August 2018
Structures and stabilization of kinetoplastid-specific split rRNAs revealed by comparing leishmanial and human ribosomes journal October 2016
Atomic resolution snapshot of Leishmania ribosome inhibition by the aminoglycoside paromomycin journal November 2017