Abstract:
BACKGROUND:Dulanermin (rhApo2L/TRAIL) induces apoptosis by binding to death receptors DR4 and DR5, leading to caspase activation and subsequent cell death. A Phase1a trial evaluated the safety and tolerability of dulanermin in patients with advanced tumours. One aim was to develop and validate pharmacodynamic biomarkers to monitor dulanermin activity in patient serum. METHODS:We optimised assays to measure the cell-death markers caspase 3/7, cytokeratin 18 and genomic DNA in serum. Mice bearing Colo205 xenografts were treated with dulanermin and sera were collected and assayed for apoptotic markers. Upon validating these assays, we monitored apoptotic markers in patients who received dulanermin. RESULTS:We detected transient increases in apoptotic markers in mouse sera 8-24 h after dulanermin treatment. This increase was dose-dependent and correlated with active caspase 3 detected by IHC in Colo205 tumours. A statistically significant increase in serum caspase 3/7 was detected in cohorts of colorectal and sarcoma patients 24 h after receiving dulanermin dosed above 4 mg kg(-1). CONCLUSION:Owing to limited responses in the Phase 1a study, the changes in circulating cell-death markers were not evaluable. Future studies with dulanermin are needed to determine the utility of these assays with respect to providing evidence of activity or predicting overall response.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Pan Y,Xu R,Peach M,Huang CP,Branstetter D,Novotny W,Herbst RS,Eckhardt SG,Holland PMdoi
10.1038/bjc.2011.456subject
Has Abstractpub_date
2011-12-06 00:00:00pages
1830-8issue
12eissn
0007-0920issn
1532-1827pii
bjc2011456journal_volume
105pub_type
杂志文章abstract::The structural characteristics of mesoionic compounds, which contain distinct regions of positive and negative charges associated with a poly-heteroatomic system, enable them to cross cellular membranes and interact strongly with biomolecules. Potential biological applications have been described for mesoionic compoun...
journal_title:British journal of cancer
pub_type: 杂志文章
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journal_title:British journal of cancer
pub_type: 杂志文章
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journal_title:British journal of cancer
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pub_type: 杂志文章
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journal_title:British journal of cancer
pub_type: 杂志文章
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pub_type: 杂志文章
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doi:10.1038/sj.bjc.6600086
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pub_type: 临床试验,杂志文章,多中心研究
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pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章,随机对照试验
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更新日期:2017-02-28 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1038/bjc.1994.80
更新日期:1994-03-01 00:00:00
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abstract:BACKGROUND:Novel prognostic biomarkers and therapeutic strategies are urgently required for malignant melanoma. Ecto-5-prime-nucleotidase (NT5E; CD73) overexpression has been reported in several human cancers. The mechanism(s) underlying deregulated expression and the clinical consequences of changes in expression are ...
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pub_type: 杂志文章
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更新日期:2012-04-10 00:00:00
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pub_type: 杂志文章
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