Evidence map›Paper›PMID 27965457›Full record

ArticleOncotarget2017

Induction of hypoxia and necrosis in multicellular tumor spheroids is associated with resistance to chemotherapy treatment.

Silvio Däster, Nunzia Amatruda, Diego Calabrese, Robert Ivanek, Eleonora Turrini, Raoul A Droeser, Paul Zajac, Carmela Fimognari, Giulio C Spagnoli, Giandomenica Iezzi and 2 more

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 142 papers.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

142 citing papers in PubMed, 267 citations in OpenAlex.

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  13. Tumor organoids modeling reveals timed responses and interplay of radiotherapy and chemotherapy in pancreatic cancer.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2026
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82 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

12 authors at 3 institutions in 2 countries.

Silvio DästerDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Nunzia AmatrudaDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Diego CalabreseDepartment of Biomedicine, University of Basel, Basel, Switzerland.
Robert IvanekDepartment of Biomedicine, University of Basel, Basel, Switzerland.
Eleonora TurriniDepartment for Life Quality Studies, University of Bologna, Rimini, Italy.
Raoul A DroeserDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Paul ZajacDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Carmela FimognariDepartment for Life Quality Studies, University of Bologna, Rimini, Italy.
Giulio C SpagnoliDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Giandomenica IezziDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Valentina MeleDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
Manuele G MuraroDepartment of Surgery, University Hospital Basel, Basel, Switzerland.
University of Basel · CHUniversity Hospital of Basel · CHUniversity of Bologna · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Culture of cancerous cells in standard monolayer conditions poorly mirrors growth in three-dimensional architectures typically observed in a wide majority of cancers of different histological origin. Multicellular tumor spheroid (MCTS) culture models were developed to mimic these features. However, in vivo tumor growth is also characterized by the presence of ischemic and necrotic areas generated by oxygenation gradients and differential access to nutrients. Hypoxia and necrosis play key roles in tumor progression and resistance to treatment. To provide in vitro models recapitulating these events in highly controlled and standardized conditions, we have generated colorectal cancer (CRC) cell spheroids of different sizes and analyzed their gene expression profiles and sensitivity to treatment with 5FU, currently used in therapeutic protocols. Here we identify three MCTS stages, corresponding to defined spheroid sizes, characterized by normoxia, hypoxia, and hypoxia plus necrosis, respectively. Importantly, we show that MCTS including both hypoxic and necrotic areas most closely mimic gene expression profiles of in vivo-developing tumors and display the highest resistance to 5FU. Taken together, our data indicate that MCTS may mimic in vitro generation of ischemic and necrotic areas in highly standardized and controlled conditions, thereby qualifying as relevant models for drug screening purposes.

Indexed as

AnimalsAntimetabolites, AntineoplasticCell HypoxiaColorectal NeoplasmsDrug Resistance, NeoplasmFluorouracilGene Expression ProfilingHCT116 CellsHT29 CellsHumansMiceMice, Inbred NODMice, SCIDNecrosisOxygenSpheroids, CellularAntimetabolites, AntineoplasticFluorouracilOxygenhypoxiamulticellular tumor spheroidsnecrosisthree-dimensional culturetumor model

Identifiers

PMID27965457
PMCPMC5352092
OpenAlexW2560447818

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.