Evidence map›Paper›PMID 34179558›Full record

ArticleSpine surgery and related research2021

The Effect of Megakaryocytes and Platelets Derived from Human-Induced Pluripotent Stem Cells on Bone Formation.

Masashi Sato, Yasuhiro Shiga, Naoya Takayama, Masamitsu Sone, Kentaro Kosaka, Itsuro Motegi, Norichika Mizuki, Kazuhide Inage, Yawara Eguchi, Miyako Narita and 3 more

Open access · diamondAbstract read
In one paragraph

Article in Spine surgery and related research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.4field-weighted citation impact, top 40% 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

1 citing paper in PubMed, 3 citations in OpenAlex.

  1. Article
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

13 authors at 2 institutions in 1 country.

Masashi SatoDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Yasuhiro ShigaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Naoya TakayamaDepartment of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Masamitsu SoneDepartment of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Kentaro KosakaDepartment of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Itsuro MotegiDepartment of Clinical Application, Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Norichika MizukiDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Kazuhide InageDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Yawara EguchiDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Miyako NaritaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Sumihisa OritaDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Koji EtoDepartment of Regenerative Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Seiji OhtoriDepartment of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, Japan.
Chiba University · JPKyoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPlatelet-rich plasma (PRP) is drawing attention as a substance that can promote bone formation. The growth factors present in PRP are stable for a long time after freeze-drying. However, the effects of PRP are inconsistent, and its effects on bone union in spinal surgery remain controversial. The immortalized megakaryocyte cell lines (imMKCLs) derived from human-induced pluripotent stem cells (hiPSCs) have been developed to produce numerous stable and clinically functional platelets. In this study, growth factors present in freeze-dried hiPSC-derived imMKCLs and platelets (iPS-MK/Plts) were evaluated, and their ability to promote bone formation was examined using a rat lumbar artificial bone grafting model.

methodsWe prepared freeze-dried iPS-MK/Plts and quantified their growth factors by enzyme-linked immunosorbent assays. Surgical grafting of artificial bone to the lumbar transverse processes was performed in 8-week-old female rats, which were divided into two groups: artificial bone graft (control) and artificial bone graft plus freeze-dried iPS-MK/Plts (iPS group). Transplantation was performed only on the left side. Eight weeks after the surgery, we captured computed tomography images and compared bilateral differences in the bone volume of the graft site in each rat. We also compared the left side/right side bone volume ratio between the two groups.

resultsThe freeze-dried iPS-MK/Plts contained numerous growth factors. While there was no significant increase in bone volume on the transplanted side than that on the non-grafted side in the control group, bone volume significantly increased on the transplanted side in the iPS group, as evidenced by augmented mean left/right bone volume ratio of the iPS group compared with that of the control group. But the new bone observed in the iPS group was histologically normal.

conclusionsFreeze-dried hiPSC-derived MKCLs and platelets contain several stable growth factors and have the potential for promoting new bone formation.

Indexed as

bonefreeze-drygrowth factorsimmortalized megakaryocyte cell linesinduced pluripotent stem cellsplatelet-rich plasma

Identifiers

PMID34179558
PMCPMC8208956
OpenAlexW3130141506

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.