Evidence map›Paper›PMID 30544191›Full record

ArticleNucleic acids research2019

Diverse lipid conjugates for functional extra-hepatic siRNA delivery in vivo.

Annabelle Biscans, Andrew Coles, Reka Haraszti, Dimas Echeverria, Matthew Hassler, Maire Osborn, Anastasia Khvorova

Abstract read
In one paragraph

Article in Nucleic acids research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 128 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
128citing 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

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

  1. Pooled it
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  5. Investigating theBioconjugate chemistry · 2026
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  8. Therapeutic delivery of albumin-binding siRNA targeting IRS2 to diverse cell types reduces mammary tumor growth.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
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68 more citing papers are in PubMed but not listed here.

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

7 authors.

Annabelle BiscansRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Andrew ColesRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Reka HarasztiRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Dimas EcheverriaRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Matthew HasslerRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Maire OsbornRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.
Anastasia KhvorovaRNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01604, USA.

Funding

Development of RNAi based sFLT1-targeting therapeutics for treatment of PreeclampsiaR01HD086111 · NICHD · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI KHVOROVA, ANASTASIA · 2016 to 2020
$3.4M
Inter and intra-cellular trafficking pathways for natural and therapeutic RNAsR01GM108803 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI KHVOROVA, ANASTASIA · 2014 to 2018
$2.0M
Mid-Scale RNA Synthesis, Purification and Quality Control SystemS10OD020012 · OD · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI KHVOROVA, ANASTASIA · 2015 to 2015
$563k
NICHD NIH HHS R01 HD086111NIGMS NIH HHS R01 GM108803NIH HHS S10 OD020012
6 · The paper itself

Abstract

Small interfering RNA (siRNA)-based therapies are proving to be efficient for treating liver-associated disorders. However, extra-hepatic delivery remains challenging, limiting therapeutic siRNA utility. We synthesized a panel of fifteen lipid-conjugated siRNAs and systematically evaluated the impact of conjugate on siRNA tissue distribution and efficacy. Generally, conjugate hydrophobicity defines the degree of clearance and the liver-to-kidney distribution profile. In addition to primary clearance tissues, several conjugates achieve significant siRNA accumulation in muscle, lung, heart, adrenal glands and fat. Oligonucleotide distribution to extra-hepatic tissues with some conjugates was significantly higher than with cholesterol, a well studied conjugate, suggesting that altering conjugate structure can enhance extra-hepatic delivery. These conjugated siRNAs enable functional gene silencing in lung, muscle, fat, heart and adrenal gland. Required levels for productive silencing vary (5-200 μg/g) per tissue, suggesting that the chemical nature of conjugates impacts tissue-dependent cellular/intracellular trafficking mechanisms. The collection of conjugated siRNA described here enables functional gene modulation in vivo in several extra-hepatic tissues opening these tissues for gene expression modulation. A systemic evaluation of a panel of conjugated siRNA, as reported here, has not previously been investigated and shows that chemical engineering of lipid siRNAs is essential to advance the RNA therapeutic field.

Indexed as

AnimalsCarbocyaninesCholesterolFatty AcidsFemaleFluorescent DyesKidneyLipidsLiverMicePhosphorylcholineRNA InterferenceRNA, Small InterferingTissue Distributionbehenic acidCarbocyaninesCholesterolcyanine dye 3Fatty AcidsFluorescent DyesLipidsPhosphorylcholineRNA, Small Interfering

Identifiers

PMID30544191
PMCPMC6379722

What OpenQuestion holds

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Registered trials

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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.