Evidence map›Paper›PMID 12936978›Full record

ArticleAntimicrobial agents and chemotherapy2003

Shikonin, a component of chinese herbal medicine, inhibits chemokine receptor function and suppresses human immunodeficiency virus type 1.

Xin Chen, Lu Yang, Ning Zhang, Jim A Turpin, Robert W Buckheit, Clay Osterling, Joost J Oppenheim, O M Zack Howard

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
2.5field-weighted citation impact, top 12% of its field
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

69 citing papers in PubMed, 227 citations in OpenAlex.

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  11. AnFrontiers in pharmacology · 2024
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  13. Genome-Wide Comparison and Functional Characterization ofInternational journal of molecular sciences · 2023
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  15. Antiallergic Effects of N,N-dicoumaroylspermidine Isolated fromInternational journal of molecular sciences · 2022
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9 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

8 authors at 3 institutions in 1 country.

Xin ChenBasic Research Program, SAIC-Frederick, Inc, National Cancer Institute-Frederick, Frederick, Maryland 21702-1201, USA.
Lu Yang
Ning Zhang
Jim A Turpin
Robert W Buckheit
Clay Osterling
Joost J Oppenheim
O M Zack Howard
National Cancer Institute · USScience Applications International Corporation (United States) · USSouthern Research Institute · US

Funding

Studies of Chemokine-Receptor Interactions with Chemokines and alarminsZ01BC009369 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI OPPENHEIM, JOOST J · 1996 to 2008
$1.8M
NCI NIH HHS N01 CO012400PHS HHS N01-C0-12400
6 · The paper itself

Abstract

Shikonin is a major component of zicao (purple gromwell, the dried root of Lithospermum erythrorhizon), a Chinese herbal medicine with various biological activities, including inhibition of human immunodeficiency virus (HIV) type 1 (HIV-1). G protein-coupled chemokine receptors are used by HIV-1 as coreceptors to enter the host cells. In this study, we assessed the effects of shikonin on chemokine receptor function and HIV-1 replication. The results showed that, at nanomolar concentrations, shikonin inhibited monocyte chemotaxis and calcium flux in response to a variety of CC chemokines (CCL2 [monocyte chemoattractant protein 1], CCL3 [macrophage inflammatory protein 1alpha], and CCL5 [regulated upon activation, normal T-cell expressed and secreted protein]), the CXC chemokine (CXCL12 [stromal cell-derived factor 1alpha]), and classic chemoattractants (formylmethionyl-leucine-phenylalanine and complement fraction C5a). Shikonin down-regulated surface expression of CCR5, a primary HIV-1 coreceptor, on macrophages to a greater degree than the other receptors (CCR1, CCR2, CXCR4, and the formyl peptide receptor) did. CCR5 mRNA expression was also down-regulated by the compound. Additionally, shikonin inhibited the replication of a multidrug-resistant strain and pediatric clinical isolates of HIV in human peripheral blood mononuclear cells, with 50% inhibitory concentrations (IC(50)s) ranging from 96 to 366 nM. Shikonin also effectively inhibited the replication of the HIV Ba-L isolate in monocytes/macrophages, with an IC(50) of 470 nM. Our results suggest that the anti-HIV and anti-inflammatory activities of shikonin may be related to its interference with chemokine receptor expression and function. Therefore, shikonin, as a naturally occurring, low-molecular-weight pan-chemokine receptor inhibitor, constitutes a basis for the development of novel anti-HIV therapeutic agents.

Indexed as

Anti-HIV AgentsAnti-Inflammatory AgentsCalcium SignalingCells, CulturedCell SurvivalChemotaxis, LeukocyteDown-RegulationDrugs, Chinese HerbalFlow CytometryHumansNaphthoquinonesReceptors, CCR5Receptors, ChemokineReverse Transcriptase Polymerase Chain ReactionRNA, ViralSignal TransductionAnti-HIV AgentsAnti-Inflammatory AgentsDrugs, Chinese HerbalNaphthoquinonesReceptors, CCR5Receptors, ChemokineRNA, Viralshikonin

Identifiers

PMID12936978
PMCPMC182643
OpenAlexW2143089914

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.