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Mechanical Unloading of Engineered Human Meniscus Models Under Simulated Microgravity: A Transcriptomic Study.

Zhiyao Ma¹, David Xinzheyang Li^1,2, Ryan K W Chee¹

¹Department of Surgery, Division of Orthopaedic Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, T6G 2E1, Canada.

Scientific Data

|November 30, 2022

Summary

This summary is machine-generated.

This study explored how simulated microgravity affects knee osteoarthritis (KOA) development in engineered meniscus tissues. Findings may reveal mechanisms behind sex differences in KOA, particularly in response to mechanical unloading.

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Published on: January 7, 2019

Area of Science:

Biomedical Engineering
Orthopedics
Genomics

Background:

Knee osteoarthritis (KOA) disproportionately affects females, but hormonal factors alone don't explain this disparity.
Mechanical unloading, such as in microgravity, is linked to osteoarthritis (OA) development in cartilage.
Mechanisms and sex-based differences in OA development under unloading remain underexplored.

Purpose of the Study:

To investigate OA-like changes in engineered human meniscus tissues under simulated microgravity.
To analyze whole-genome sequences and phenotypic characteristics of these tissues.
To explore sex-dependent differences in response to mechanical unloading.

Main Methods:

Engineered meniscus constructs were created using human meniscus fibrochondrocytes (MFC) on collagen scaffolds.
Constructs were cultured under normal gravity and simulated microgravity conditions.
Whole-genome sequencing and phenotypic evaluations were performed on tissues from male and female donors.

Main Results:

Whole-genome sequences and phenotypic data were obtained from engineered meniscus constructs.
Data were collected from both normal gravity and simulated microgravity conditions.
The study included samples from both male and female donors.

Conclusions:

The generated data provide a resource for understanding KOA mechanisms under mechanical unloading.
This research can help elucidate the molecular basis for sex differences in KOA.
Further investigation into microgravity's role in cartilage degeneration and sex disparities is warranted.