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Wan Y, Lin Y, Tan X, Gong L, Lei F, Wang C, Sun X, Du X, Zhang Z, Jiang J, Liu Z, Wang J, Zhou X, Wang S, Zhou X, Jing P, Zhong Z. Injectable Hydrogel To Deliver Bone Mesenchymal Stem Cells Preloaded with Azithromycin To Promote Spinal Cord Repair. ACS NANO 2024; 18:8934-8951. [PMID: 38483284 DOI: 10.1021/acsnano.3c12402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Spinal cord injury is a disease that causes severe damage to the central nervous system. Currently, there is no cure for spinal cord injury. Azithromycin is commonly used as an antibiotic, but it can also exert anti-inflammatory effects by down-regulating M1-type macrophage genes and up-regulating M2-type macrophage genes, which may make it effective for treating spinal cord injury. Bone mesenchymal stem cells possess tissue regenerative capabilities that may help promote the repair of the injured spinal cord. In this study, our objective was to explore the potential of promoting repair in the injured spinal cord by delivering bone mesenchymal stem cells that had internalized nanoparticles preloaded with azithromycin. To achieve this objective, we formulated azithromycin into nanoparticles along with a trans-activating transcriptional activator, which should enhance nanoparticle uptake by bone mesenchymal stem cells. These stem cells were then incorporated into an injectable hydrogel. The therapeutic effects of this formulation were analyzed in vitro using a mouse microglial cell line and a human neuroblastoma cell line, as well as in vivo using a rat model of spinal cord injury. The results showed that the formulation exhibited anti-inflammatory and neuroprotective effects in vitro as well as therapeutic effects in vivo. These results highlight the potential of a hydrogel containing bone mesenchymal stem cells preloaded with azithromycin and trans-activating transcriptional activator to mitigate spinal cord injury and promote tissue repair.
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Affiliation(s)
- Yujie Wan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
- Ultrasound Medicine Department, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - Yan Lin
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xie Tan
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Lingyi Gong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Fei Lei
- Department of Spine Surgery, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Changguang Wang
- DataRevive USA, LLC, 30 W Gude Drive, Rockville, Maryland 20850, United States
| | - Xiaoduan Sun
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xingjie Du
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhang
- West China School of Pharmacy, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jun Jiang
- Department of Thyroid and Vascular Surgery, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhongbing Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Jingxuan Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiaoling Zhou
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Shuzao Wang
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Xiangyu Zhou
- Department of Thyroid and Vascular Surgery, the Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Pei Jing
- Department of Pharmacy, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Zhirong Zhong
- Key Laboratory of Medical Electrophysiology, Ministry of Education, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
- Central Nervous System Drug Key Laboratory of Sichuan Province, Luzhou, Sichuan 646000, China
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Sun X, Li M, Huang S, Zhang H, Li K. Protective effect of bone morphogenetic protein-7 induced differentiation of bone marrow mesenchymal stem cells in rat with acute spinal cord injury. Funct Integr Genomics 2023; 23:68. [PMID: 36849554 DOI: 10.1007/s10142-023-00994-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 02/08/2023] [Accepted: 02/17/2023] [Indexed: 03/01/2023]
Abstract
The principal aim of present study was to assess the therapeutic efficacy of bone morphogenetic protein-7 (BMP-7) induced differentiation of bone marrow mesenchymal stem cells (BMSCs) in a rat acute spinal cord injury (SCI) model. BMSCs were isolated from rats, and then divided into a control and a BMP-7 induction groups. The proliferation ability of BMSCs and glial cell markers were determined. Forty Sprague-Dawley (SD) rats were randomly divided into sham, SCI, BMSC, and BMP7 + BMSC groups (n = 10). Among these rats, the recovery of hind limb motor function, the pathological related markers, and motor evoked potentials (MEP) were identified. BMSCs differentiated into neuron-like cells after the introduction of exogenous BMP-7. Interestingly, the expression levels of MAP-2 and Nestin increased, whereas the expression level of GFAP decreased after the treatment with exogenous BMP-7. Furthermore, the Basso, Beattie, and Bresnahan (BBB) score reached 19.33 ± 0.58 in the BMP-7 + BMSC group at day 42. Nissl bodies in the model group were reduced compared to the sham group. After 42 days, in both the BMSC and BMP-7 + BMSC groups, the number of Nissl bodies increased. This is especially so for the number of Nissl bodies in the BMP-7 + BMSC group, which was more than that in the BMSC group. The expression of Tuj-1 and MBP in BMP-7 + BMSC group increased, whereas the expression of GFAP decreased. Moreover, the MEP waveform decreased significantly after surgery. Furthermore, the waveform was wider and the amplitude was higher in BMP-7 + BMSC group than that in BMSC group. BMP-7 promotes BMSC proliferation, induces the differentiation of BMSCsinto neuron-like cells, and inhibits the formation of glial scar. BMP-7 plays a confident role in the recovery of SCI rats.
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Affiliation(s)
- Xudong Sun
- The First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, No.280, Changhuai Road, Longzihu Distract, Bengbu, 233044, Anhui Province, China
| | - Maoyong Li
- The First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, No.280, Changhuai Road, Longzihu Distract, Bengbu, 233044, Anhui Province, China
| | - Shiyuan Huang
- The First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, No.280, Changhuai Road, Longzihu Distract, Bengbu, 233044, Anhui Province, China
| | - Heng Zhang
- The First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, No.280, Changhuai Road, Longzihu Distract, Bengbu, 233044, Anhui Province, China.
| | - Kuanxin Li
- The First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, No.280, Changhuai Road, Longzihu Distract, Bengbu, 233044, Anhui Province, China.
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Wang M, Li X, Xie W, Zhong L, Leng Y, Chen X, Yang M, Qi L, Zhang Z, Liu L, Tang D. Inhibitory Effect of Lentivirus-Mediated Gag-Caspase-8 on the Growth of HER-2-Overexpressing Primary Human Breast Cancer Cells. Cancer Biother Radiopharm 2021; 37:720-728. [PMID: 34388026 DOI: 10.1089/cbr.2021.0124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background: Apoptosis plays an essential role in the development and treatment of tumors, and caspase-8 (CASP8) plays an important role in the enzyme cascade reaction that leads to apoptosis. Human epidermal growth factor receptor 2 (HER-2)-overexpressing breast cancer is highly aggressive and has a high recurrence rate and poor prognosis. This study investigated whether lentivirus-mediated Gag-CASP8 can effectively deliver activated CASP8 into primary human breast cancer cells overexpressing HER-2 to induce apoptosis and explore the underlying mechanism. Materials and Methods: HER-2-overexpressing primary human breast cancer cells were infected with lentivirus-like particles carrying Gag-CASP8. Results: After a 48-h infection of primary human breast cancer cells with HER-2 by lentivirus-mediated Gag-CASP8, significant differences were observed in the survival rate, migration ability, S-phase number of cells, apoptosis rate, and intracellular activated CASP8 and caspase-3 levels in tumor cells compared with those in the control group (p < 0.05). Conclusions: Lentivirus-mediated Gag-CASP8 can deliver activated CASP8 into HER-2-overexpressing primary human breast cancer cells and induce apoptosis by activating caspase-3, a downstream apoptotic executive molecule. By blocking the S-phase to inhibit cell proliferation and migration, lentivirus-mediated Gag-CASP8 provides a reference for tumor gene therapy.
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Affiliation(s)
- Min Wang
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiping Li
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Wei Xie
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Li Zhong
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yu Leng
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Xiaoqiong Chen
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Mei Yang
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Ling Qi
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Zhenda Zhang
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Linjian Liu
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Dongxin Tang
- First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
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Li T, Xu Y, Wang Y, Jiang Y. Differential expression profiles of long noncoding RNAs and mRNAs in human bone marrow mesenchymal stem cells after exposure to a high dosage of dexamethasone. Stem Cell Res Ther 2021; 12:9. [PMID: 33407832 PMCID: PMC7788840 DOI: 10.1186/s13287-020-02040-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 11/19/2020] [Indexed: 12/28/2022] Open
Abstract
Background Abnormalities in apoptosis, cell cycle, proliferation, and differentiation of human bone marrow mesenchymal stem cells (hBMSCs) significantly impact bone metabolism and remodeling, resulting in various skeletal disorders. Long-term exposure to a high dosage of dexamethasone (Dex) induces apoptosis and inhibits the proliferation of mesenchymal stromal cells (MSCs), which are probable primary causes of various skeletal disorders. However, to date, the exact mechanisms of action of Dex on hBMSCs have not been fully elucidated. Methods To explore the effects of Dex on apoptosis, cell cycle, proliferation, senescence, osteogenic and adipogenic differentiation of hBMSCs at the various exposure times and concentrations, Hoechst 33342/PI staining, flow cytometry, crystal violet assay, β-galactosidase (β-GAL) activity assay, alizarin red S (ARS) staining assay, and Oil Red O (ORO) staining assay were performed. A microarray assay was used to identify differentially expressed lncRNAs and mRNAs in 10− 6 mol/L Dex-treated hBMSCs, and a bioinformatics analysis was conducted to further explore the role of these differentially expressed lncRNAs and mRNAs in the coding and noncoding (CNC) network. Furthermore, the microarray results were validated using quantitative real-time PCR (qRT-PCR) analysis. Results Over the range of 10−8, 10−7, and 10−6 mol/L, Dex induced apoptosis, arrest of the cell cycle, inhibition of osteogenic differentiation, and promotion adipogenic differentiation of the hBMSCs in a dose-dependent manner. In addition, 10−6 mol/L Dex significantly induced apoptosis, suppressed proliferation, and increased the senescence of hBMSCs in a time-dependent manner. Interestingly, this time-dependent effect of Dex on the apoptosis of hBMSCs plateaued at the 7th day and decreased from the 8th day to the 10th day, while Dex treatment increased senescence of the hBMSCs on the 6th day. Furthermore, the microarray analysis identified a total of 137 differentially expressed mRNAs (90 upregulated and 47 downregulated) and 90 differentially expressed lncRNAs (61 upregulated and 29 downregulated) in hBMSCs after exposure to 10−6 mol/L Dex. The differentially expressed mRNAs and lncRNAs were associated with the regulation of cell apoptosis, proliferation, and cell cycle. Meanwhile, several signaling pathways involved in these processes, including the mTOR signaling pathway, Ras signaling pathway, HIF-1 signaling pathway, NF-kappa B signaling pathway, and TGF-beta signaling pathway, also were identified through the interaction net in the significant pathways (Path-Net) analysis. Furthermore, the CNC network further identified 78 core regulatory genes involved in the regulation of apoptosis. Additionally, qRT-PCR was used to confirm the identity of the key differentially expressed mRNAs and lncRNAs found to be closely associated with cell apoptosis to confirm the reliability of the microarray dataset. Conclusions In summary, the effect of Dex on apoptosis, cell cycle, proliferation, and osteogenic differentiation and adipogenic differentiation of the hBMSCs depended on exposure time and concentration. Continuous exposure to 10−6 mol/L of Dex for 7 days may be a suitable protocol for inducing the apoptosis of hBMSCs. Under this protocol, differentially expressed lncRNAs and mRNAs associated with apoptosis, cell cycle, and proliferation were identified, providing a new research direction for further studies. Supplementary information The online version contains supplementary material available at 10.1186/s13287-020-02040-8.
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Affiliation(s)
- Tao Li
- Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Yingxing Xu
- Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.,Qingdao University, Qingdao, 266071, Shandong, China.,Medical Department of Qingdao University, Qingdao, 266071, Shandong, China
| | - Yingzhen Wang
- Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Yaping Jiang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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