Evidence map›Paper›PMID 17922077›Full record

ArticleInvestigational new drugs2008

The novel alkylating prodrug J1: diagnosis directed activity profile ex vivo and combination analyses in vitro.

Malin Wickström, Caroline Haglund, Henrik Lindman, Peter Nygren, Rolf Larsson, Joachim Gullbo

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Article in Investigational new drugs, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–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

17 citing papers in PubMed.

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  2. Melflufen and Dexamethasone in Heavily Pretreated Relapsed and Refractory Multiple Myeloma.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2021
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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

6 authors.

Malin WickströmDivision of Clinical Pharmacology, Department of Medical Sciences, Uppsala University Hospital, Entrance 61, 4th floor, 75185 Uppsala, Sweden. Malin.Wickstrom@medsci.uu.se
Caroline Haglund
Henrik Lindman
Peter Nygren
Rolf Larsson
Joachim Gullbo

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe dipeptide J1 acts as a prodrug of melphalan with a significant increased potency in vitro resulting from activation by cellular aminopeptidases. The current study was performed to evaluate the ex vivo profile of J1 using 176 primary tumor cell cultures from patients. In addition, the activity of J1 in combination with eight standard drugs, representing different mechanistic classes, was studied in nine different human tumor cell lines of different histopathological origin.

methodsEx vivo evaluation of tumor type selectivity, was performed using the established fluorometric microculture cytotoxicity assay (FMCA). Combinations between J1 and eight standard chemotherapeutic drugs were analyzed using the median-effect method.

resultsThe prodrug J1 expressed approximately 50- to 100-fold higher potency but similar activity profile as that of its metabolite, melphalan. The difference was greater in some diagnoses (e.g. breast cancer, NHL and AML), and exceptionally high in some breast cancer samples with aggressive phenotypes. Combination analysis of J1 and standard chemotherapeutics yielded several potentially additive and synergistic interactions, most striking for etoposide with significant synergism in all studied cell lines.

conclusionsIn conclusion, the ex vivo profile suggests that further evaluation of J1 as the alkylating agent in for example aggressive breast cancer might be of particular interest, preferentially in combination with DNA-topoisomerase II inhibitors like etoposide.

Indexed as

Antineoplastic Combined Chemotherapy ProtocolsCell Line, TumorDipeptidesDrug Screening Assays, AntitumorDrug SynergismFluorometryHumansMelphalanNeoplasmsProdrugsDipeptidesL-melphalanyl-p-L-fluorophenylalanine ethyl esterMelphalanProdrugs

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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.