Evidence map›Paper›PMID 34800469›Full record

ArticleBiophysical journal2022

Dedifferentiation alters chondrocyte nuclear mechanics during in vitro culture and expansion.

Soham Ghosh, Adrienne K Scott, Benjamin Seelbinder, Jeanne E Barthold, Brittany M St Martin, Samantha Kaonis, Stephanie E Schneider, Jonathan T Henderson, Corey P Neu

Open access · greenAbstract read
In one paragraph

Article in Biophysical journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
5.3field-weighted citation impact, top 4% 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

33 citing papers in PubMed, 41 citations in OpenAlex.

  1. Nascent Extracellular Matrix Converts Biomaterial Cues into Cell Fate Decisions.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 1 country.

Soham GhoshDepartment of Mechanical Engineering, Colorado State University, Fort Collins, CO; School of Biomedical Engineering, Colorado State University, Fort Collins, CO; Translational Medicine Institute, Colorado State University, Fort Collins, CO. Electronic address: soham.ghosh@colostate.edu.
Adrienne K ScottPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO.
Benjamin SeelbinderPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO.
Jeanne E BartholdPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO.
Brittany M St MartinPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO.
Samantha KaonisSchool of Biomedical Engineering, Colorado State University, Fort Collins, CO; Translational Medicine Institute, Colorado State University, Fort Collins, CO.
Stephanie E SchneiderPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO.
Jonathan T HendersonWeldon School of Biomedical Engineering, Purdue University, West Lafayette, IN.
Corey P NeuPaul M. Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO; Biomedical Engineering Program, University of Colorado Boulder, Boulder, CO; BioFrontiers Institute, University of Colorado Boulder, Boulder, CO.
University of Colorado Boulder · USColorado State University · USPurdue University West Lafayette · US

Funding

Probing Osteoarthritis Pathogenesis by Noninvasive Imaging of Cartilage StrainR01AR063712 · NIAMS · UNIVERSITY OF COLORADO · PI NEU, COREY P · 2013 to 2023
$4.7M
Predoctoral Training Molecular BiophysicsT32GM065103 · NIGMS · UNIVERSITY OF COLORADO AT BOULDER · PI FALKE, JOSEPH J · 2002 to 2021
$4.3M
Combined Biophysical and Biochemical Study of Single CellsR21AR064178 · NIAMS · PURDUE UNIVERSITY · PI NEU, COREY P · 2012 to 2013
$405k
Biomechanics of Human Articular Cartilage Measured In VivoR21AR066230 · NIAMS · PURDUE UNIVERSITY · PI NEU, COREY P · 2014 to 2015
$357k
NIAMS NIH HHS R01 AR063712NIAMS NIH HHS R21 AR064178NIAMS NIH HHS R21 AR066230NIGMS NIH HHS T32 GM065103
6 · The paper itself

Abstract

The biophysical features of a cell can provide global insights into diverse molecular changes, especially in processes like the dedifferentiation of chondrocytes. Key biophysical markers of chondrocyte dedifferentiation include flattened cellular morphology and increased stress-fiber formation. During cartilage regeneration procedures, dedifferentiation of chondrocytes during in vitro expansion presents a critical limitation to the successful repair of cartilage tissue. Our study investigates how biophysical changes of chondrocytes during dedifferentiation influence the nuclear mechanics and gene expression of structural proteins located at the nuclear envelope. Through an experimental model of cell stretching and a detailed spatial intranuclear strain quantification, we identified that strain is amplified and the distribution of strain within the chromatin is altered under tensile loading in the dedifferentiated state. Further, using a confocal microscopy image-based finite element model and simulation of cell stretching, we found that the cell shape is the primary determinant of the strain amplification inside the chondrocyte nucleus in the dedifferentiated state. Additionally, we found that nuclear envelope proteins have lower gene expression in the dedifferentiated state. This study highlights the role of cell shape in nuclear mechanics and lays the groundwork to design biophysical strategies for the maintenance and enhancement of the chondrocyte phenotype during cell expansion with a goal of successful cartilage tissue engineering.

Indexed as

Cartilage, ArticularChondrocytesCell NucleusCell ProliferationTissue Engineering

Identifiers

PMID34800469
PMCPMC8758405
OpenAlexW3211601280

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.