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Xiao XY, Zhang NN, Long YZ, Huang GL. Repair mechanism of radiation-induced salivary gland injury by hypoxia-pretreated human urine-derived stem cell exosomes. Oral Dis 2022. [PMID: 36546840 DOI: 10.1111/odi.14476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 12/07/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To explore the protective effect of human urine-derived stem cell exosomes (hUSC-Exos) on radiation-induced salivary gland (SG) injuries in Sprague Dawley rats. METHODS Fresh adult urine was collected, and primary hUSCs were isolated and identified. The hUSCs were hypoxia-pretreated with 1% oxygen for 24 h and then transferred to a normoxic culture environment for 24 h. The hUSC-Exos were collected and identified for exosomes. A radiation-induced injury model was established in the rats, and exosomes were introduced by local injection in the SG and tail vein. The submandibular gland was excised for morphological observation 1 week later. Immunohistochemical detection of the glandular tissue was conducted by α-smooth muscle actin (a-SMA), stem cell growth factor receptor (c-Kit) staining, and periodic acid-Schiff staining. Qualitative polymerase chain reaction and western blot analysis were adopted to detect the gene and protein expression of Wnt3a, GSK3β, and Axin. RESULTS In both the normoxic and hypoxic hUSC-Exo groups, microvesicular structures with bilayer membranes of approximately 80 nm in diameter were detected, and the expressions of CD9 and CD63 were detected by nanoflow cytometry. Compared with the control group, in the radiation-induced injury model group, the expression of a-SMA was significantly higher, the expression of c-Kit was significantly lower, and the expressions of Wnt3a, GSK3β, and Axin were significantly upregulated; the differences were statistically significant (p < 0.05). Compared with the model group, in the normoxic and hypoxic hUSC-Exo groups, the expression of a-SMA was significantly decreased, the expression of c-Kit was significantly increased, and the expressions of Wnt3a, GSK3β, and Axin were significantly upregulated; the differences were statistically significant (p < 0.05). CONCLUSION Hypoxia-pretreated hUSC-Exos could repair radiation-induced SG injuries by activating the Wnt3a/GSK3β pathway to suppress the expressions of a-SMA and c-Kit.
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Affiliation(s)
| | - Ni-Ni Zhang
- Department of Dentofacial Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
| | - Yuan-Zhu Long
- School Stomatol, Key Lab Oral Disease Research, Zunyi Medical University, Zunyi, China
| | - Gui-Lin Huang
- Department of Dentofacial Surgery, Affiliated Stomatological Hospital of Zunyi Medical University, Zunyi, China
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Tu M, Wang R, Zhu P, Wang Q, Sun B, Lu K, Zhang J, Xie W, Guo H, Li S, Wu Y, Wang X. Human Urine-Derived Stem Cells Improve Partial Bladder Outlet Obstruction in Rats: Preliminary Data and microRNA-mRNA Expression Profile. Stem Cell Rev Rep 2022; 18:2403-2413. [PMID: 35230645 PMCID: PMC9489579 DOI: 10.1007/s12015-022-10340-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2022] [Indexed: 11/29/2022]
Abstract
Partial bladder outlet obstruction (pBOO) often results in bladder tissue inflammation and remodeling. As human urine-derived stem cells (USCs) have demonstrated therapeutic benefits, we used a rat model to investigate the effect of USCs on bladder function and explore the miRNA and gene expression profiles in bladder tissue using RNA sequencing. Eighteen rats were assigned to a sham surgery group, pBOO group, and pBOO+USC group (six biweekly treatments). Routine urodynamic monitoring, analysis of detrusor muscle strips, and pathophysiology assessments were conducted. Finally, altered miRNA and mRNA expression profiles of bladder tissue were examined using RNA sequencing and bioinformatics analysis. After USC treatment, elevated bladder compliance and maximal voiding pressure, declined end filling pressure and voided volume, and improved detrusor muscle contractility and carbachol sensitivity were found. Histology and TUNEL assay revealed reduced collagen deposition and muscle cell apoptosis in bladder tissue. The differential expression of eight miRNAs was reversed by USC treatment. Two large nodes (miR-142 and miR-9a) were identified in the miRNA-gene interaction network in the USC-treated group. The Kyoto Encyclopedia of Genes and Genomes analysis revealed enrichment of multiple significant pathways, including those involved in necroptosis and cytokine-cytokine receptor interactions. This is the first study to demonstrate the protective effect of USCs on bladder function and remodeling in pBOO rats. The miRNA and mRNA expression levels differed in the bladder of pBOO rats with and without USC treatment. Although the mechanism underlying these effects has not been fully elucidated, necroptosis and cytokine-cytokine receptor interaction-related pathways may be involved.
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Affiliation(s)
- Menjiang Tu
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Rui Wang
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Pei Zhu
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Qingqing Wang
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Bishao Sun
- Department of Urology, Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Keshi Lu
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Jiawei Zhang
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Weijie Xie
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Huan Guo
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Shulin Li
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China
| | - Yuqi Wu
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China.
| | - Xiangwei Wang
- Department of Urology, Southern University of Science and Technology Hospital, Liuxian Street, Nanshan District, Shenzhen, NO.6019, China.
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Liu G, Sun J, Gong M, Xing F, Wu S, Xiang Z. Urine-derived stem cells loaded onto a chitosan-optimized biphasic calcium-phosphate scaffold for repairing large segmental bone defects in rabbits. J Biomed Mater Res B Appl Biomater 2021; 109:2014-2029. [PMID: 33979024 DOI: 10.1002/jbm.b.34850] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 03/28/2021] [Accepted: 03/31/2021] [Indexed: 02/05/2023]
Abstract
The treatment of large segmental bone defects can be challenging for orthopedic surgeons. The development of bone tissue engineering technology, including the selection of seeding cells and the construction of scaffolds, provides a promising solution. In this study, we investigated osteogenic differentiation of human urine-derived stem cells (hUSCs, a newly identified class of stem cells), and developed a novel porous hybrid scaffold using biphasic calcium phosphate (BCP) bioceramic ornamented with chitosan sponges (CS). We combined hUSCs with a CS/BCP hybrid scaffold to construct tissue-engineered bone and evaluated whether the combination promotes bone regeneration in large segmental bone defects in rabbits. The study showed that hUSCs can differentiate into osteoblasts, and the hUSCs adhered, proliferated, and differentiated on CS/BCP hybrid scaffolds. Micro-computed tomography measurements, biomechanical detection, and histological analyses revealed that the combination of hUSCs and the CS/BCP hybrid scaffold enhanced bone regeneration more effectively compared with conventional pure BCP scaffolds, indicating that hUSCs can be used as a cell source for bone tissue engineering and that cell-scaffold-based biomimetic bone may be a promising approach to the repair of bone defects.
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Affiliation(s)
- Guoming Liu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China.,Department of Orthopedics, Affiliated Hospital of Qingdao University, Qingdao, PR China
| | - Jiachen Sun
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China
| | - Min Gong
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China
| | - Fei Xing
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China
| | - Shuang Wu
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China
| | - Zhou Xiang
- Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, PR China.,Division of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, PR China
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Zhang Y, Wang J, Yang B, Qiao R, Li A, Guo H, Ding J, Li H, Ye H, Wu D, Cui L, Yang S. Transfer of MicroRNA-216a-5p From Exosomes Secreted by Human Urine-Derived Stem Cells Reduces Renal Ischemia/Reperfusion Injury. Front Cell Dev Biol 2020; 8:610587. [PMID: 33415108 PMCID: PMC7783217 DOI: 10.3389/fcell.2020.610587] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 11/23/2020] [Indexed: 12/19/2022] Open
Abstract
Human urine-derived stem cells (USCs) protect rats against kidney ischemia/reperfusion (I/R) injury. Here we investigated the role of USCs exosomes (USCs-Exos) in protecting tubular endothelial cells and miRNA transfer in the kidney. Human USCs and USCs-Exos were isolated and verified by morphology and specific biomarkers. USC-Exos played a protective role in human proximal tubular epithelial cells (HK-2) exposed to hypoxia/reoxygenation (H/R). USCs-Exos were rich in miR-216a-5p, which targeted phosphatase and tensin homolog (PTEN) and regulated cell apoptosis through the Akt pathway. In HK-2 cells exposed to H/R, incubation with USC-Exos increased miR-216-5p, decreased PTEN levels, and stimulated Akt phosphorylation. Exposure of hypoxic HK-2 cells to USCs-Exos pretreated with anti-miR-216a-5p can prevent the increase of miR-216-5p and Akt phosphorylation levels, restore PTEN expression, and promote apoptosis. The dual-luciferase reported gene assay in HK-2 cells confirmed that miR-216a-5p targeted PTEN. In rats with I/R injury, intravenous infusion of USCs-Exos can effectively induce apoptosis suppression and functional protection, which is associated with decreased PTEN. Infusion of exosomes from anti-miR-216a-5p-transfected USCs weakened the protective effect in the I/R model. Therefore, USCs-Exos can reduce renal I/R injury by transferring miR-216a-5p targeting PTEN. Potentially, USCs-Exos rich in miR-216a-5p can serve as a promising therapeutic option for AKI.
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Affiliation(s)
- Yinmei Zhang
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Junxiong Wang
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Boxin Yang
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Rui Qiao
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Aiwei Li
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Han Guo
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Jie Ding
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Hui Li
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Hong Ye
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Di Wu
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Liyan Cui
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
| | - Shuo Yang
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, China
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Pan C, Zheng X, Wang L, Chen Q, Lin Q. Pretreatment with human urine-derived stem cells protects neurological function in rats following cardiopulmonary resuscitation after cardiac arrest. Exp Ther Med 2020; 20:112. [PMID: 32989390 PMCID: PMC7517276 DOI: 10.3892/etm.2020.9240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 07/10/2020] [Indexed: 12/21/2022] Open
Abstract
Cardiopulmonary resuscitation (CPR) after cardiac arrest (CA) often leads to neurological deficits in the absence of effective treatment. The aim of the present basic research study was to investigate the effects of human urine-derived stem cells (hUSCs) on the recovery of neurological function in rats after CA/CPR. hUSCs were isolated in vitro and identified using flow cytometry. A rat model of CA was established, and CPR was performed. Animals were scored for neurofunctional deficits following hUSC transplantation. The expression levels of brain-derived neurotrophic factor (BDNF) and vascular endothelial growth factor (VEGF) in the hippocampus and temporal cortex were detected via immunofluorescence. Moreover, brain water content and serum S100 calcium binding protein B (S100B) levels were measured 7 days following hUSC transplantation. The results demonstrated that hUSCs had upregulated expression levels of CD29, CD90, CD44, CD105, CD73, CD224 and CD146, and expressed low levels of CD34 and human leukocyte antigen-DR isotype. In addition, hUSCs were able to differentiate into neuronal cells in vitro. The SPSS 19.0 statistical package was used for statistical analysis, and it was found that the neurological function of the rats after CA/CPR was significantly improved following hUSC transplantation. Furthermore, hUSCs aggregated in the hippocampus and temporal cortex, and secreted large amounts of BDNF and VEGF. hUSC transplantation also effectively inhibited brain edema and serum S100B levels after CPR. Therefore, the results suggested that hUSC transplantation significantly improved the neurological function of rats after CA/CPR, possibly by promoting the expression levels of BDNF and VEGF, as well as inhibiting brain edema.
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Affiliation(s)
- Chun Pan
- Emergency Department, Suzhou Emergency Center, Suzhou, Jiangsu 215008, P.R. China
| | - Xu Zheng
- Department of Anesthesiology, The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University, Suzhou, Jiangsu 215008, P.R. China
| | - Liang Wang
- Emergency Department, Suzhou Emergency Center, Suzhou, Jiangsu 215008, P.R. China
| | - Qian Chen
- Laboratory Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu 215008, P.R. China
| | - Qi Lin
- Dispatch Department, Suzhou Emergency Center, Suzhou, Jiangsu 215000, P.R. China
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Sun X, Zheng W, Qian C, Wu Q, Hao Y, Lu G. Focal adhesion kinase promotes BMP2-induced osteogenic differentiation of human urinary stem cells via AMPK and Wnt signaling pathways. J Cell Physiol 2019; 235:4954-4964. [PMID: 31663128 DOI: 10.1002/jcp.29374] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/27/2019] [Indexed: 12/18/2022]
Abstract
Human urine-derived stem cells (hUSCs) serve as favorable candidates for bone transplants due to their efficient proliferative and multipotent differentiation abilities, as well as the capacity to secrete a variety of vasoactive agents to facilitate tissue engineering. The present study aimed to explore the role of focal adhesion kinase (FAK) in bone morphogenetic protein 2 (BMP2)-induced osteogenic differentiation of hUSCs and to investigate the underlying mechanism. The degree of osteogenic differentiation and the correlated signals, following BMP2 overexpression and siRNA-mediated silencing of FAK, were determined in vitro. Moreover, hUSCs induced bone formation in a rat model with cranial defects, in vivo. Our findings revealed that alkaline phosphatase production, calcium deposits, osteocalcin and osteopontin expression, and bone formation were upregulated in vitro and in vivo following BMP2-induced osteogenic differentiation, and AMPK and Wnt signaling pathway activation by FAK could effectively regulate BMP2-enhanced osteogenic differentiation of hUSCs. Taken together, these findings indicated that FAK could mediate BMP2-enhanced osteogenic differentiation of hUSCs through activating adenosine 5'-monophosphate-activated protein kinase and Wnt signaling pathways.
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Affiliation(s)
- Xingwei Sun
- Department of Intervention, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Weiwei Zheng
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Chen Qian
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Qin Wu
- Department of Ultrasound, The Affiliated Suzhou Science & Technology Town Hospital of Nanjing Medical University, Suzhou, China
| | - Yuefeng Hao
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Guohai Lu
- Department of Orthopaedics, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
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Duan YR, Chen BP, Chen F, Yang SX, Zhu CY, Ma YL, Li Y, Shi J. Exosomal microRNA-16-5p from human urine-derived stem cells ameliorates diabetic nephropathy through protection of podocyte. J Cell Mol Med 2019; 25:10798-10813. [PMID: 31568645 PMCID: PMC8642687 DOI: 10.1111/jcmm.14558] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 05/30/2019] [Accepted: 07/05/2019] [Indexed: 01/19/2023] Open
Abstract
Diabetic nephropathy (DN) remains one of the severe complications associated with diabetes mellitus. It is worthwhile to uncover the underlying mechanisms of clinical benefits of human urine‐derived stem cells (hUSCs) in the treatment of DN. At present, the clinical benefits associated with hUSCs in the treatment of DN remains unclear. Hence, our study aims to investigate protective effect of hUSC exosome along with microRNA‐16‐5p (miR‐16‐5p) on podocytes in DN via vascular endothelial growth factor A (VEGFA). Initially, miR‐16‐5p was predicated to target VEGFA based on data retrieved from several bioinformatics databases. Notably, dual‐luciferase report gene assay provided further verification confirming the prediction. Moreover, our results demonstrated that high glucose (HG) stimulation could inhibit miR‐16‐5p and promote VEGFA in human podocytes (HPDCs). miR‐16‐5p in hUSCs was transferred through the exosome pathway to HG‐treated HPDCs. The viability and apoptosis rate of podocytes after HG treatment together with expression of the related factors were subsequently determined. The results indicated that miR‐16‐5p secreted by hUSCs could improve podocyte injury induced by HG. In addition, VEGA silencing could also ameliorate HG‐induced podocyte injury. Finally, hUSC exosomes containing overexpressed miR‐16‐5p were injected into diabetic rats via tail vein, followed by qualification of miR‐16‐5p and observation on the changes of podocytes, which revealed that overexpressed miR‐16‐5p in hUSCs conferred protective effects on HPDCs in diabetic rats. Taken together, the present study revealed that overexpressed miR‐16‐5p in hUSC exosomes could protect HPDCs induced by HG and suppress VEGFA expression and podocytic apoptosis, providing fresh insights for novel treatment of DN.
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Affiliation(s)
- Yu-Rui Duan
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Bao-Ping Chen
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Fang Chen
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Su-Xia Yang
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Chao-Yang Zhu
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Ya-Li Ma
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Yang Li
- Department of Urology, Huaihe Hospital of Henan University, Kaifeng, China
| | - Jun Shi
- Department of Nephrology, Huaihe Hospital of Henan University, Kaifeng, China
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Zhou M, Shen L, Qiao Y, Sun Z. Inducing differentiation of human urine-derived stem cells into hepatocyte-like cells by coculturing with human hepatocyte L02 cells. J Cell Biochem 2019; 121:566-573. [PMID: 31407401 DOI: 10.1002/jcb.29301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 06/27/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To investigate the possibility of inducing differentiation of human urine-derived stem cells (hUSCs) into hepatocyte-like cells by coculturing with human hepatocyte L02 cells in vitro. METHODS HUSCs were isolated from fresh urine samples collected from healthy adult volunteers by centrifugation. Cells were observed under an inverted phase contrast microscope, and proliferative activity was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Stem cell surface markers were detected by flow cytometry. HUSCs were induced to differentiate into hepatocyte-like cells by coculturing with human hepatocyte L02 cells, which were confirmed by cellular morphology, messenger RNA expression of albumin (ALB), α-fetoprotein (AFP) and hepatocyte cytochrome P450 (CYP450) analyzed with quantitative reverse transcription polymerase chain reaction and the expression of glycogen detected by glycogen staining kits at 5, 10, and 15 days after coculturing. RESULTS HUSCs from urine were successfully isolated and cultured in vitro. At passages 3, the growth curve of hUSCs was S-shaped with good proliferation activity. Mesenchymal stem cell surface markers CD44 and CD90 were detected positive by flow cytometry. CD31 for endothelial cells and CD34 for hematopoietic stem cell markers were not detected. HUSCs gained the cellular morphology and function of hepatocyte cells including higher expression of several hepatocyte-specific genes such as ALB and some CYP450, lower expression of AFP and positive glycogen expression (P < .05) in coculturing with human hepatocyte L02 cells for 10-15d. CONCLUSIONS HUSCs can be induced to differentiate into hepatocyte-like cells by coculturing with human hepatocyte L02 cells for a certain number of days.
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Affiliation(s)
- Ming Zhou
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Liangliang Shen
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Yinggu Qiao
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Zhenxiao Sun
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
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Wang Q, Zhao J, Wu C, Yang Z, Dong X, Liu Q, Sun B, Wei C, Hu X, Li L. Large conductance voltage and Ca 2+-activated K + channels affect the physiological characteristics of human urine-derived stem cells. Am J Transl Res 2017; 9:1876-1885. [PMID: 28469792 PMCID: PMC5411935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 01/31/2017] [Indexed: 06/07/2023]
Abstract
We investigated the current characteristics of large conductance voltage and Ca2+-activated K+ (BK) channels in human urine-derived stem cells (hUSCs) and the effect of BK channels on proliferation and differentiation of hUSCs. Fresh human urine (n=6) was collected from healthy donors to isolate hUSCs. Human KCNMA1 gene silencing U6 shRNA was used to down regulate the expression of BK in hUSCs. IBTX (BK channel antagonist) and NS1619 (BK channel agonist) were used to examine the effect of BK channels on hUSCs. Whole cell patch-clamping was employed to detect the current of BK channels. Flow cytometry, immunofluorescence, and western blotting were used to analyze the cell cycle and related protein levels. The results showed that the activities of BK channels were significantly decreased in P5, P7 and induced hUSCs (endothelial, urothelial and smooth muscle cells) compared with P3 hUSCs when normalized to the cell capacitance. In addition, the average BK channel current density of hUSCs was significantly decreased upon silencing BK channel expression by hnRNA. Apoptosis rates of hUSCs in iberiotoxin (IBTX) and hnRNA treatment groups were significantly increased compared with the control group, whereas treatment with BK agonist NS1619 decreased apoptosis rates. Compared with the control group, hUSCs in S phase were significantly decreased in IBTX and hnRNA treatment groups. In conclusion, BK channels play an important role in maintaining the proliferation and differentiation of hUSCs. Overexpression of BK channels in hUSCs be provide a basis for future clinical application to an overactive bladder.
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Affiliation(s)
- Qingqing Wang
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Jiang Zhao
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Chao Wu
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Zhenxing Yang
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Xingyou Dong
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Qian Liu
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Bishao Sun
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Chen Wei
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Xiaoyan Hu
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
| | - Longkun Li
- Department of Urology, Second Affiliated Hospital, Third Military Medical UniversityChongqing 400037, China
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