Evidence map›Paper›PMID 21387310›Full record

ArticleInternational journal of cancer2012

HtrA1 sensitizes ovarian cancer cells to cisplatin-induced cytotoxicity by targeting XIAP for degradation.

Xiaoping He, Ashwani Khurana, Jacie L Maguire, Jeremy Chien, Viji Shridhar

Open access · bronzeAbstract read
In one paragraph

Article in International journal of cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Xiaoping HeDepartment of Laboratory Medicine and Experimental Pathology, Mayo Clinic College of Medicine, Rochester, MN, USA.
Ashwani Khurana
Jacie L Maguire
Jeremy Chien
Viji Shridhar
Mayo Clinic · US

Funding

Use of microfluidic tumor cultures to enable clinical trials of therapies for ovarian cancerP50CA136393 · NCI · MAYO CLINIC ROCHESTER · PI Zhenkun Lou · 2009 to 2026
$37.0M
Regulation of Serine Protease HtrA1 and ChemoresponseR01CA123249 · NCI · MAYO CLINIC ROCHESTER · PI SHRIDHAR, VIJI · 2008 to 2012
$1.5M
NCI NIH HHS P50 CA136393NCI NIH HHS R01 CA123249
6 · The paper itself

Abstract

HtrA1, a member of serine protease family, has been previously found to be involved in resistance to chemotherapy in ovarian cancer although the underlying mechanism is not clear. Using mixture-based oriented peptide library approach, previously we identified X-linked inhibitor of apoptosis protein (XIAP), a member of the inhibitor of apoptosis proteins family, as a potential substrate of HtrA1. The aim of our work is to investigate the link between HtrA1 and XIAP proteins and their relationships with chemoresistance in ovarian cancer. Our results showed that recombinant XIAP was degraded by purified wild-type HtrA1 but not mutant HtrA1 in vitro. Consistent with the in vitro data, coimmunoprecipitation assays showed that HtrA1 and XIAP formed a protein complex in vivo. Ectopic expression of HtrA1 led to decreased level of XIAP in OV167 and OV202 ovarian cancer cells, while knockdown of HtrA1 resulted in increased level of XIAP in SKOV3 ovarian cancer cells. Furthermore, overexpression of HtrA1 in OV202 cells promoted cell sensitivity to cisplatin-induced apoptosis that could be reversed by increased expression of XIAP. The cleavage of XIAP induced by HtrA1 was enhanced by cisplatin treatment. Taken together, our experiments have identified XIAP as a novel substrate of HtrA1 and the degradation of XIAP by HtrA1 contributes to cell response to chemotherapy, suggesting that restoring the expression of HtrA1 may be a promising treatment strategy for ovarian cancer.

Indexed as

Antineoplastic AgentsCisplatinDrug Resistance, NeoplasmFemaleGene Knockdown TechniquesHigh-Temperature Requirement A Serine Peptidase 1HumansOvarian NeoplasmsRecombinant ProteinsSerine EndopeptidasesTumor Cells, CulturedX-Linked Inhibitor of Apoptosis ProteinAntineoplastic AgentsCisplatinHigh-Temperature Requirement A Serine Peptidase 1HTRA1 protein, humanRecombinant ProteinsSerine EndopeptidasesX-Linked Inhibitor of Apoptosis Protein

Identifiers

PMID21387310
PMCPMC3206182
OpenAlexW2060900304

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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.