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Brambilla S, Guiotto M, Torretta E, Armenia I, Moretti M, Gelfi C, Palombella S, di Summa PG. Human platelet lysate stimulates neurotrophic properties of human adipose-derived stem cells better than Schwann cell-like cells. Stem Cell Res Ther 2023; 14:179. [PMID: 37480149 PMCID: PMC10362751 DOI: 10.1186/s13287-023-03407-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 07/06/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Trauma-associated peripheral nerve injury is a widespread clinical problem causing sensory and motor disabilities. Schwann cells (SCs) contribute to nerve regeneration, mainly by secreting nerve growth factor (NGF) and brain-derived neurotrophic factor. In the last years, adipose-derived stem cells (ASCs) differentiated into SCs (SC-ASCs) were considered as promising cell therapy. However, the cell trans-differentiation process has not been effectively showed and presents several drawbacks, thus an alternative approach for increasing ASCs neurotrophic properties is highly demanded. In the context of human cell-based therapies, Good Manufacturing Practice directions indicate that FBS should be substituted with a xenogeneic-free supplement, such as Human Platelet Lysate (HPL). Previously, we demonstrated that neurotrophic properties of HPL-cultured ASCs were superior compared to undifferentiated FBS-cultured ASCs. Therefore, as following step, here we compared the neurotrophic properties of differentiated SC-like ASCs and HPL-cultured ASCs. METHODS Both cell groups were investigated for gene expression level of neurotrophic factors, their receptors and neuronal markers. Moreover, the expression of nestin was quantitatively evaluated by flow cytometry. The commitment toward the SC phenotype was assessed with immunofluorescence pictures. Proteomics analysis was performed on both cells and their conditioned media to compare the differential protein profile. Finally, neurotrophic abilities of both groups were evaluated with a functional co-culture assay, assessing dorsal root ganglia survival and neurite outgrowth. RESULTS HPL-cultured ASCs demonstrated higher gene expression of NGF and lower expression of S100B. Moreover, nestin was present in almost all HPL-cultured ASCs and only in one quarter of SC-ASCs. Immunofluorescence confirmed that S100B was not present in HPL-cultured ASCs. Proteomics analysis validated the higher expression of nestin and the increase in cytoskeletal and ECM proteins involved in neural regeneration processes. The co-culture assay highlighted that neurite outgrowth was higher in the presence of HPL-ASCs or their conditioned medium compared to SC-ASCs. CONCLUSIONS All together, our results show that HPL-ASCs were more neurotrophic than SC-ASCs. We highlighted that the HPL triggers an immature neuro-induction state of ASCs, while keeping their stem properties, paving the way for innovative therapies for nerve regeneration.
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Affiliation(s)
- Stefania Brambilla
- Cell and Tissue Engineering Laboratory, IRCCS Istituto Ortopedico Galeazzi, Via C. Belgioioso 173, 20157, Milan, Italy
| | - Martino Guiotto
- Department of Plastic and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
| | - Enrica Torretta
- Laboratory of Proteomics and Lipidomics, IRCCS Istituto Ortopedico Galeazzi, Via C. Belgioioso 173, 20157, Milan, Italy
| | - Ilaria Armenia
- Instituto de Nanociencia y Materiales de Aragón, CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Matteo Moretti
- Cell and Tissue Engineering Laboratory, IRCCS Istituto Ortopedico Galeazzi, Via C. Belgioioso 173, 20157, Milan, Italy
- Regenerative Medicine Technologies Laboratory, Laboratories for Translational Research (LRT), Ente Ospedaliero Cantonale (EOC), Via F. Chiesa 5, 6500, Bellinzona, Switzerland
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Euler Institute, Faculty of Biomedical Sciences, USI, Lugano, Switzerland
| | - Cecilia Gelfi
- Laboratory of Proteomics and Lipidomics, IRCCS Istituto Ortopedico Galeazzi, Via C. Belgioioso 173, 20157, Milan, Italy
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Silvia Palombella
- Cell and Tissue Engineering Laboratory, IRCCS Istituto Ortopedico Galeazzi, Via C. Belgioioso 173, 20157, Milan, Italy.
| | - Pietro G di Summa
- Department of Plastic and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne (UNIL), Lausanne, Switzerland
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Yusufujiang A, Zeng S, Yang C, Jing S, Yang L, Li H. PCBP-1 Regulates the Transcription and Alternative Splicing of Inflammation and Ubiquitination-Related Genes in PC12 Cell. Front Aging Neurosci 2022; 14:884837. [PMID: 35795237 PMCID: PMC9251440 DOI: 10.3389/fnagi.2022.884837] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
PCBP-1, a multifunctional RNA binding protein, is expressed in various human cell/tissue types and involved in post-transcriptional gene regulation. PCBP-1 has important roles in cellular Iron homeostasis, mitochondrial stability, and other cellular activities involved in the pathophysiological process of neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS) and Huntington's disease (HD). However, it remains enigmatic whether PCPB-1 is associated with the pathogenesis of PD. In this study, we cloned and constitutively overexpressed PCBP-1 in rat PC12 cells (PC12 cell is the common cell line studying neurodegenerative disease include PD). RNA-seq was performed to analyze PCBP-1-regulated differentially expressed genes (DEGs) and alternative splicing events (ASEs) between control and PCBP1-overexpressed cells. GO and KEGG pathway analyses were performed to identify functional DEGs and alternatively spliced genes. Consequently, we validated PCBP-1-regulated genes using RT-qPCR. Finally, we downloaded CLIP-seq data from GEO (GSE84700) to analyze the mechanisms of PCBP-1's regulation of gene expression and ASEs by revealing the binding profile of PCBP-1 on its target pre-mRNAs. Overexpression of PCBP-1 partially regulated the ASE and expression of genes enriched in neuroinflammation and protein ubiquitination, which were also associated with PD pathogenesis. Moreover, RT-qPCR assay verified the PCBP-1-modulated expression of neuroinflammatory genes, like LCN-2, and alternative splicing (AS) of ubiquitination-related gene WWP-2. Finally, CLIP-seq data analysis indicated that the first UC motif was the critical site for PCBP-1 binding to its targets. In this study, we provided evidence that PCBP-1 could regulate the expression of LCN-2 gene expression associated with neuroinflammation and AS of WWP-2 in relation to protein ubiquitination. These findings thus provided novel insights into the potential application of PCBP-1 as the disease pathophysiological or therapeutic target for neurodegenerative disease.
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Affiliation(s)
- Aishanjiang Yusufujiang
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
| | - Shan Zeng
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
| | - Chen Yang
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
| | - Sha Jing
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
| | - Lijuan Yang
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
| | - Hongyan Li
- Department of Neurology, People’s Hospital of Xinjiang Uygur Autonomous Region, Ürümqi, China
- Xinjiang Clinical Research Center for Stroke and Neurological Rare Disease, Ürümqi, China
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