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Deng B, Deng W, Zheng H, Wei Y, Zhang J, Zeng N, He Y, Guo R. Non-adherent culture method affects the proliferation and apoptosis of mesenchymal stem cells through inhibiting LINC00707 to promote RNF6-mediated QKI ubiquitination. Exp Cell Res 2024; 434:113877. [PMID: 38072302 DOI: 10.1016/j.yexcr.2023.113877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/15/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Exploration of the molecular mechanisms of mesenchymal stem cell (MSC) growth has significant clinical benefits. Long non-coding RNAs (lncRNAs) have been reported to play vital roles in the regulation of the osteogenic differentiation of MSCs. However, the mechanism by which lncRNA affects the proliferation and apoptosis of MSCs is unclear. In this study, sequencing analysis revealed that LINC00707 was significantly decreased in non-adherent human MSCs (non-AC-hMSCs) compared to adherent human MSCs. Moreover, LINC00707 overexpression promoted non-AChMSC proliferation, cell cycle progression from the G0/G1 phase to the S phase and inhibited apoptosis, whereas LINC00707 silencing had the opposite effect. Furthermore, LINC00707 interacted directly with the quaking (QKI) protein and enhanced the E3 ubiquitin-protein ligase ring finger protein 6 (RNF6)-mediated ubiquitination of the QKI protein. Additionally, the overexpression of QKI rescued the promotive effects on proliferation and inhibitory effects on apoptosis in non-AC-hMSCs induced by the ectopic expression of LINC00707. Thus, LINC00707 contributes to the proliferation and apoptosis in non-AChMSCs by regulating the ubiquitination and degradation of the QKI protein.
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Affiliation(s)
- Baoping Deng
- Department of Interventional Vascular Surgery, The Fifth Affiliated Hospital, Southern Medical University, 566# Congcheng Road, Conghua District, Guangzhou, Guangdong Province, PR China; Department of Vascular Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, PR China
| | - Weiping Deng
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, 187# Guan Lan Road, Longhua District, Shenzhen, 518110, Guangdong, PR China
| | - Hongmei Zheng
- Department of Gastroenterology, Shenzhen Longhua District Central Hospital, 187# Guan Lan Road, Longhua District, Shenzhen, 518110, Guangdong, PR China
| | - Yue Wei
- Maternal and Child Research Institute, Shunde Women and Children's Hospital of Guangdong Medical University, No. 3 Baojian Road, Shunde district, Foshan 528300, PR China
| | - Jinfeng Zhang
- Maternal and Child Research Institute, Shunde Women and Children's Hospital of Guangdong Medical University, No. 3 Baojian Road, Shunde district, Foshan 528300, PR China
| | - Na Zeng
- Maternal and Child Research Institute, Shunde Women and Children's Hospital of Guangdong Medical University, No. 3 Baojian Road, Shunde district, Foshan 528300, PR China
| | - Yulan He
- Maternal and Child Research Institute, Shunde Women and Children's Hospital of Guangdong Medical University, No. 3 Baojian Road, Shunde district, Foshan 528300, PR China
| | - Runmin Guo
- Maternal and Child Research Institute, Shunde Women and Children's Hospital of Guangdong Medical University, No. 3 Baojian Road, Shunde district, Foshan 528300, PR China.
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Wang Q, Shi W, Lin S, Wang H. FOXO1 regulates osteogenic differentiation of periodontal ligament stem cells through the METTL3 signaling pathway. J Orthop Surg Res 2023; 18:637. [PMID: 37644500 PMCID: PMC10463830 DOI: 10.1186/s13018-023-04120-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Periodontitis is a chronic inflammation that occurs in periodontal tissue and has a high incidence rate. Periodontal ligament stem cells (PDLSCs) are ideal candidates for periodontal tissue and bone regeneration in patients with periodontitis. The purpose of this work was to analyze the molecular mechanisms that affect the osteogenic differentiation of PDLSCs. METHODS In this work, qRT‒PCR was used to detect the mRNA expression level of FOXO1 in clinical tissues and PDLSCs. Alkaline phosphatase (ALP) staining and Alizarin red S (ARS) staining were used to detect the degree of osteogenic differentiation of PDLSCs. qRT‒PCR and western blotting were used to measure the levels of the early osteogenic markers COL1A1 and RUNX2. The JASPAR online database was used to predict FOXO1-regulated genes. RESULTS FOXO1 was generally expressed at low levels in clinical samples from patients with periodontitis. We provided evidence that overexpression of FOXO1 promoted osteogenic differentiation in PDLSCs. In addition, both in vitro and rescue experiments showed that FOXO1 regulated METTL3. FOXO1 affected osteogenic differentiation mainly by regulating METTL3 modification of the PI3K/AKT pathway. CONCLUSIONS FOXO1 activated the PI3K/AKT signaling pathway by transcriptionally activating METTL3. This effect promoted the osteogenic differentiation of PDLSCs.
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Affiliation(s)
- Qi Wang
- Foshan Dengte Dental Clinic, Fenjiang Middle Road, Chancheng District, Foshan, 528000, China.
| | - Wei Shi
- MeiQi Dental Clinic, Wuhan Mengya Dentistry, Wuhan, 430000, China
| | - Shaozhan Lin
- Foshan Dengte Dental Clinic, Fenjiang Middle Road, Chancheng District, Foshan, 528000, China
| | - Hanxue Wang
- Foshan Dengte Dental Clinic, Fenjiang Middle Road, Chancheng District, Foshan, 528000, China
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