Evidence map›Paper›PMID 23679574›Full record

ArticleCancer science2013

Conditionally replicative adenoviral vectors for imaging the effect of chemotherapy on pancreatic cancer cells.

Jun Kimura, Hidetaka A Ono, Takashi Kosaka, Yoji Nagashima, Shuichi Hirai, Shigeo Ohno, Kazunori Aoki, Davydova Julia, Masato Yamamoto, Chikara Kunisaki and 1 more

Open access · greenAbstract read
In one paragraph

Article in Cancer science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.7field-weighted citation impact, top 24% 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

4 citing papers in PubMed, 4 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

11 authors at 2 institutions in 2 countries.

Jun KimuraDepartment of Gastroenterological Surgery, Graduate School of Medicine, Yokohama-city University, Yokohama, Japan.
Hidetaka A Ono
Takashi Kosaka
Yoji Nagashima
Shuichi Hirai
Shigeo Ohno
Kazunori Aoki
Davydova Julia
Masato Yamamoto
Chikara Kunisaki
Itaru Endo
Yokohama City University · JPUniversity of Minnesota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pancreatic cancer has a poor prognosis after complete macroscopic resection combined with chemotherapy. Even after neoadjuvant chemotherapy, R0 resection is often not possible. Moreover, current imaging techniques cannot reliably distinguish viable cancer cells from scar tissue at the resectional margin. We investigated the use of a conditionally replicative adenovirus (CRAd), Ad5/3Cox2CRAd-ΔE3ADP-Luc, for imaging the effects of chemotherapy. The CRAd infectivity of pancreatic cancer cells was enhanced by a chimeric Ad5/3 fiber, E1A expression was under the control of the Cox2 promoter, and the luciferase gene was inserted adjacent to the adenovirus death protein (ADP) gene. Subcutaneous xenografts of the pancreatic cancer cell line MiaPaCa-2 were established in 24 BALB/c nu/nu mice. When xenografts reached a diameter of 4-6 mm (day 1), the mice were injected i.p. with either PBS (group A; n = 12) or 1000 mg/kg gemcitabine (group B; n = 12), weekly. On days 19, 26, 33, and 40, CRAd were injected intratumorally into three mice in groups A and B. Bioluminescence was imaged 72 h after CRAd injection, and gross tumor volumes were measured then tumors were removed for ex vivo histopathology using H&E and Ki-67 staining. Correlations between gross tumor volume, pathological evaluation of the percentage of viable tumor area, and CRAd bioluminescence were analyzed. Bioluminescence correlated closely with the percentage of viable tumor area (R = 0.96), but not with gross tumor volume (R = 0.31). Therefore, CRAds might be reliable imaging tools for monitoring chemotherapy in pancreatic cancer, and could improve our ability to distinguish viable tumor cells from scar tissue.

Indexed as

AdenoviridaeAdenovirus E1A ProteinsAdenovirus E3 ProteinsAnimalsCell Line, TumorCyclooxygenase 2Diagnostic ImagingFemaleGenes, ReporterGenetic VectorsHumansMiceMice, Inbred BALB CMice, NudePancreatic NeoplasmsPromoter Regions, Geneticadenovirus death protein, AdenovirusAdenovirus E1A ProteinsAdenovirus E3 ProteinsCyclooxygenase 2PTGS2 protein, human

Identifiers

PMID23679574
PMCPMC7657248
OpenAlexW2120441575

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.