Evidence map›Paper›PMID 20439495›Full record

ArticleMolecular and cellular biology2010

Heat shock protein 27 is required for sex steroid receptor trafficking to and functioning at the plasma membrane.

Mahnaz Razandi, Ali Pedram, Ellis R Levin

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

43 citing papers in PubMed, 78 citations in OpenAlex.

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  12. 17Cancers · 2019
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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

3 authors at 1 institution in 1 country.

Mahnaz RazandiDivision of Endocrinology, Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, USA.
Ali Pedram
Ellis R Levin
Long Beach Medical Center · US

Funding

Non-genomic actions of estrogen in breast cancerR01CA100366 · NCI · SOUTHERN CALIFORNIA INST FOR RES/EDUC · PI LEVIN, ELLIS R · 2004 to 2014
$2.3M
NCI NIH HHS CA-10036NCI NIH HHS R01 CA100366
6 · The paper itself

Abstract

Classical sex steroid receptors (SRs) localize at the plasma membranes (PMs) of cells, initiating signal transduction through kinase cascades that contribute to steroid hormone action. Palmitoylation of the SRs is required for membrane localization and function, but the proteins that facilitate this modification and subsequent receptor trafficking are unknown. Initially using a proteomic approach, we identified that heat shock protein 27 (Hsp27) binds to a motif in estrogen receptor alpha (ERalpha) and promotes palmitoylation of the SR. Hsp27-induced acylation occurred on the ERalpha monomer and augmented caveolin-1 interactions with ERalpha, resulting in membrane localization, kinase activation, and DNA synthesis in breast cancer cells. Oligomerization of Hsp27 was required, and similar results were found for the trafficking of endogenous progesterone and androgen receptors to the PMs of breast and prostate cancer cells, respectively. Small interfering RNA (siRNA) knockdown of Hsp27 prevented sex SR trafficking to and signaling from the membrane. These results identify a conserved and novel function for Hsp27 with potential as a target for interrupting signaling from membrane sex SRs to tumor biology in hormone-responsive cancers.

Indexed as

AnimalsBreast NeoplasmsCaveolin 1Cell Line, TumorCell MembraneEstrogen Receptor alphaFemaleHSP27 Heat-Shock ProteinsHumansLipoylationMalePeptidesProstatic NeoplasmsReceptors, AndrogenRNA, Small InterferingSignal TransductionCaveolin 1Estrogen Receptor alphaHSP27 Heat-Shock ProteinsPeptidesReceptors, AndrogenRNA, Small Interfering

Identifiers

PMID20439495
PMCPMC2897588
OpenAlexW2102614641

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.