Evidence map›Paper›PMID 28251404›Full record

ArticleCytotechnology2017

The enhancement of antibody concentration and achievement of high cell density CHO cell cultivation by adding nucleoside.

Yasuhiro Takagi, Takuya Kikuchi, Ryuta Wada, Takeshi Omasa

Abstract read
In one paragraph

Article in Cytotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 47 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

4 authors at 2 institutions in 1 country.

Yasuhiro TakagiInstitute of Bioscience and Bioindustry, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima, 770-8506, Japan.
Takuya KikuchiBiotechnology Laboratories, Astellas Pharma Inc., 5-2-3 Tokodai, Tsukuba, Ibaraki, 300-2698, Japan.
Ryuta WadaBiotechnology Laboratories, Astellas Pharma Inc., 5-2-3 Tokodai, Tsukuba, Ibaraki, 300-2698, Japan.
Takeshi OmasaInstitute of Bioscience and Bioindustry, Tokushima University, 2-1 Minamijosanjima-cho, Tokushima, 770-8506, Japan. omasa@bio.eng.osaka-u.ac.jp.ORCID http://orcid.org/0000-0003-0635-3862
Astellas Pharma (Japan) · JPTokushima University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recently, with the dramatic increase in demand for therapeutic antibodies, Chinese hamster ovary (CHO) cell culture systems have made significant progress in recombinant antibody production. Over the past two decades, recombinant antibody productivity has been improved by more than 100-fold. Medium optimization has been identified as an important key approach for increasing product concentrations. In this study, we evaluated the effects of deoxyuridine addition to fed-batch cultures of antibody-expressing CHO cell lines. Furthermore, we investigated the effects of combined addition of deoxyuridine, thymidine, and deoxycytidine. Our results suggest that addition of these pyrimidine nucleosides can increase CHO cell growth, with no significant change in the specific production rate. As a result of the increased cell growth, the antibody concentration was elevated and we were able to achieve more than 9 g/L during 16 days of culture. Similar effects of nucleoside addition were observed in fed-batch cultures of a Fab fragment-expressing CHO cell line, and the final Fab fragment concentration was more than 4 g/L. This nucleoside addition strategy could be a powerful platform for efficient antibody production.

Indexed as

Cell culture mediumChinese hamster ovary (CHO) cellNucleosideTherapeutic antibody

Identifiers

PMID28251404
PMCPMC5461242
OpenAlexW2591980198

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.