Evidence map›Paper›PMID 31687424›Full record

ArticleRegenerative therapy2019

Proliferation medium in three-dimensional culture of auricular chondrocytes promotes effective cartilage regeneration

Ryuji Okubo, Yukiyo Asawa, Makoto Watanabe, Satoru Nagata, Masaki Nio, Tsuyoshi Takato, Atsuhiko Hikita, Kazuto Hoshi

Open access · goldAbstract read
In one paragraph

Article in Regenerative therapy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

19 citing papers in PubMed, 29 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

8 authors at 3 institutions in 1 country.

Ryuji OkuboDepartment of Pediatric Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Aoba-ku, Sendai 980-8574, Japan.
Yukiyo AsawaDepartment of Cell & Tissue Engineering (Fujisoft), Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan.
Makoto WatanabeDepartment of Cell & Tissue Engineering (Fujisoft), Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan.
Satoru NagataNagata Microtia and Reconstructive Plastic Surgery Clinic, Sasameminamicho 22-1, Toda, Saitama 335-0035, Japan.
Masaki NioDepartment of Pediatric Surgery, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Aoba-ku, Sendai 980-8574, Japan.
Tsuyoshi TakatoJR Tokyo General Hospital, Yoyogi 2-1-3, Shibuya-ku, Tokyo 151-8528, Japan.
Atsuhiko HikitaDepartment of Cell & Tissue Engineering (Fujisoft), Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan.
Kazuto HoshiDepartment of Oral and Maxillofacial Surgery, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8655, Japan.
The University of Tokyo · JPTohoku University · JPJR Tokyo General Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionCartilage regeneration have been attracted attentions because of the poor ability of cartilage tissues to regenerate. Three-dimensional (3D) culture of chondrocytes is considered to be advantageous for cartilage regeneration. Although it is plausible that maturation of the constructs before transplantation positively affects the chondrogenesis, matured constructs after cultures for longer periods do not necessarily result in effective cartilage regeneration. In this study, we compared different types of culture media including growth factors which are clinically available. We prepared differentiation medium containing insulin-like growth factor-1 (IGF-1), proliferation medium containing fibroblast growth factor-2 (FGF-2) and insulin, and combination of them, and compared their efficacies on chondrogenesis when used in 3D culture of engineered cartilage constructs.

methodsCartilage constructs were fabricated by auricular chondrocytes and atelocollagen, and they were 3D-cultured with four types of media: control medium, differentiation medium, proliferation medium, and combination medium. After 3 weeks of culture, the constructs were analyzed for cell number, gene and protein expressions and mechanical properties. The constructs were also transplanted into nude mice. After 8 weeks, the degree of cartilage regeneration was evaluated. Constructs manufactured with canine auricular chondrocytes were subjected to autologous transplantation into beagles and examined for cartilage regeneration.

resultsDuring 3D culture, remarkably high gene expression of type II collagen was detected in the construct cultured with the differentiation medium whereas cell apoptosis were suppressed in the proliferation medium. When transplanted into nude mice, the constructs 3D-cultured in the proliferation medium produced abundant cartilage matrices. In autologous implantation model, the construct cultured in the proliferation medium again showed better chondrogenesis than those in other media.

conclusionsThe present study indicates that 3D culture with the proliferation medium maintains the cell viability to potentiate the subsequent cartilage regeneration

Indexed as

Cartilage regenerationCulture mediumThree-dimensional culture

Identifiers

PMID31687424
PMCPMC6818372
OpenAlexW2980675898

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.