Dataset Information

Differential Proteomic Analysis of Fetal and Geriatric Lumbar Nucleus Pulposus

ABSTRACT: Intervertebral disc degeneration (IVDD) is a main cause of degenerative disc disease, which results in substantial pain among patients. However, the mechanism of degeneration remains unclear. Thus far, basic research on human IVDD has focused on only a limited number of proteins and has not been conducted from a holistic perspective. In this study, we used tandem mass tag (TMT) labeling combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) to perform differential proteomic analysis on fetal and geriatric lumbar disc nucleus pulposus tissue. These data indicate that differential proteomics analysis may be an important method for elucidation of the pathophysiological process and molecular biological mechanism of human IVDD from a holistic perspective. The findings in this study will aid in screening of new biomarkers for early diagnosis and targeted treatment of IVDD.

ORGANISM(S): Homo Sapiens

SUBMITTER: Bohua Chen

PROVIDER: PXD015000 | iProX | Sat May 02 00:00:00 BST 2020

REPOSITORIES: iProX

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Publications

Differential proteomic analysis of fetal and geriatric lumbar nucleus pulposus: immunoinflammation and age-related intervertebral disc degeneration.

Qiu Chensheng C Wu Xiaolin X Bian Jiang J Ma Xuexiao X Zhang Guoqing G Guo Zhu Z Wang Yan Y Ci Yandong Y Wang Qizun Q Xiang Hongfei H Chen Bohua B

BMC musculoskeletal disorders 20200602 1

<h4>Background</h4>Intervertebral disc degeneration (IVDD) is a major cause of low back pain. Although the mechanism of degeneration remains unclear, aging has been recognized as a key risk factor for IVDD. Most studies seeking to identify IVDD-associated molecular alterations in the context of human age-related IVDD have focused only on a limited number of proteins. Differential proteomic analysis is an ideal method for comprehensively screening altered protein profiles and identifying the pote ...[more]

PMID: 32487144

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Project description:Fetal cartilage fully regenerates following injury while in adult mammals cartilage injury leads to osteoarthritis (OA). OA is characterized by cartilage breakdown and joint inflammation and associated with significant pain and socioeconomic costs. As no clinically satisfactory treatment is available to date, disease-modifying therapies aimed to achieve cartilage regeneration are urgently required. The inherent regeneration potential of fetal individuals may hold answers to this unmet need. Therefore, to characterize the differences in fetal and adult response to cartilage injury, we carried out histology and comprehensive proteome analyses on fetal (day 80/150-day gestation) and adult cartilage samples one (fetal samples) and three (adult and fetal samples) days after surgical induction of a full-thickness cartilage lesion. In addition, proteins secreted by inflamed fetal MSCs in vitro were compared with the in vivo response to injury to evaluate their therapeutic potential. Histology of synovial samples revealed the presence of neutrophils one day post injury (p.i.) and an influx of macrophages into the subsynovial tissue on day 3 p.i. in fetal samples. In contrast, adult synovial samples showed invasion of neutrophils on day 3 p.i. Activation and migration of Iba1+- macrophages of the synovial lining was observed both in fetal and adult animals. Comparative mass spectrometry revealed 57 proteins significantly up-regulated (> 2FC, FDR<0.05), and 67 proteins significantly down-regulated (<-2 FC) upon injury in adults. Neutrophil-related proteins and acute phase proteins were the two major upregulated protein groups in adult cartilage following injury compared to fetal sheep. In contrast, several immunomodulating proteins and growth factors were significantly higher expressed in the fetus than the adult. Comparison of the in vitro MSCs with the in vivo fetal proteome revealed shared upregulation of 17 proteins, which were considered to be of potential therapeutic interest. The results of this study support our molecular understanding of successful fetal cartilage healing and new therapeutic strategies to induce regeneration in adult articular cartilage by modulating the inflammatory environment. The shared protein upregulation in fetal cartilage in vivo and in fetal MSCS during in vitro inflammation supports the possible therapeutic potential of these factors in specific and fetal MSCs in general.

Dataset Information

Differential Proteomic Analysis of Fetal and Geriatric Lumbar Nucleus Pulposus

Publications

Differential proteomic analysis of fetal and geriatric lumbar nucleus pulposus: immunoinflammation and age-related intervertebral disc degeneration.

Similar Datasets

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