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Louie JD, Barrios-Camacho CM, Bromberg BH, Hintschich CA, Schwob JE. Spatiotemporal dynamics exhibited by horizontal basal cells reveal a pro-neurogenic pathway during injury-induced olfactory epithelium regeneration. iScience 2024; 27:109600. [PMID: 38650985 PMCID: PMC11033173 DOI: 10.1016/j.isci.2024.109600] [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] [Received: 05/22/2022] [Revised: 12/21/2023] [Accepted: 03/25/2024] [Indexed: 04/25/2024] Open
Abstract
Horizontal basal cells (HBCs) mediate olfactory epithelium (OE) regeneration following severe tissue injury. The dynamism of the post-injury environment is well illustrated by in silico modeling of RNA sequencing data that demonstrate an evolving HBC transcriptome. Unfortunately, spatiotemporally dynamic processes occurring within HBCs in situ remain poorly understood. Here, we show that HBCs at 24 h post-OE injury spatially redistribute a constellation of proteins, which, in turn, helped to nominate Rac1 as a regulator of HBC differentiation during OE regeneration. Using our primary culture model to activate HBCs pharmacologically, we demonstrate that concurrent Rac1 inhibition attenuates HBC differentiation potential. This in vitro functional impairment manifested in vivo as decreased HBC differentiation into olfactory sensory neurons following HBC-specific Rac1 conditional knockout. Taken together, our data potentiate the design of hyposmia-alleviating therapies and highlight aspects of in situ HBC spatiotemporal dynamics that deserve further investigation.
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Affiliation(s)
- Jonathan D. Louie
- Medical Scientist Training Program, Tufts University School of Medicine, Boston, MA 02111, USA
- Neuroscience Graduate Program, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
- Department of Developmental, Molecular & Chemical Biology, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
| | - Camila M. Barrios-Camacho
- Neuroscience Graduate Program, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
- Department of Developmental, Molecular & Chemical Biology, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
| | - Benjamin H. Bromberg
- Department of Developmental, Molecular & Chemical Biology, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
| | - Constantin A. Hintschich
- Department of Developmental, Molecular & Chemical Biology, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
- Department of Otorhinolaryngology, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA
| | - James E. Schwob
- Department of Developmental, Molecular & Chemical Biology, Tufts University Graduate School of Biomedical Sciences, Boston, MA 02111, USA
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CD19嵌合抗原受体T细胞制备条件优化及其体内外杀伤作用研究. Zhonghua Xue Ye Xue Za Zhi 2022; 43. [PMID: 35968595 DOI: 10.3760/cma.j.issn.0253-2727.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Objective: To optimize the stimulation and activation system of mouse CD3(+) T cells in vitro and explore the optimal infection time of CD3(+) T cells to establish mouse CD19 chimeric antigen receptor T cells (mCD19 CAR-T) , and to also verify its killing effect in vivo and in vitro. Method: Splenic CD3(+)T cells were isolated and purified using magnetic beads, and the cells were cultured in Soluble anti-CD3/CD28, PMA+Ionomycin, and Plated anti-CD3/CD28. Cell activation and apoptosis were assessed by flow cytometry after 8, 24, 48, and 72 hours. ScFv plasmid of mouse CD19 antibody was transfected to plat-E cells to package retrovirus. Activated CD3(+) T cells were infected to construct mouse-specific CD19 chimeric antigen receptor T cells (mCD19 CAR-T) , and mCD19 CAR-T cells were co-cultured with B-cell lymphoma cell line A20 in vitro. The specific toxicity of A20 was detected by flow cytometry, and mCD19 CAR-T cells were infused into the lymphoma mouse model to detect its killing effect and distribution. Results: The activation effect of Plated anti-CD3/CD28 on CD3(+) T cells was superior, with the cells exhibiting good viability 24-48 hours after stimulation. Established mCD19 CAR-T cells with stable efficiency[ (32.27±7.56) % ] were specifically able to kill A20 tumor cells (The apoptosis rate was 24.3% at 48 h) . In vivo detection showed a non-significant decrease in the percentage[ (1.83±0.58) % ] of splenic CD19(+) cells 6 days after mCD19 CAR-T cell infusion. A marked clearance in bone marrow and spleen appeared on day 12 compared with the A20 group, and this difference was statistically significant[spleen: (0.36±0.04) % vs (47.00±13.46) % , P<0.001; bone marrow: (1.82±0.29) % vs (37.30±1.44) % , P<0.0001]. Moreover, mCD19 CAR-T cells were distributed in high proportions in the peripheral blood, spleen, and bone marrow[ (2.90±1.12) % , (4.96±0.80) % , (13.55±1.56) % ]. Conclusion: This study demonstrated an optimized activation system and the optimal infection time of CD3(+) T cells. Furthermore, stable constructed mCD19 CAR-T cells showed a remarkable killing ability in vitro and in vivo.
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Lee HK, Kim HS, Pyo M, Park EJ, Jang S, Jun HW, Lee TY, Kim KS, Bae SC, Kim Y, Hong JT, Yun J, Han SB. Phorbol ester activates human mesenchymal stem cells to inhibit B cells and ameliorate lupus symptoms in MRL. Fas lpr mice. Am J Cancer Res 2020; 10:10186-10199. [PMID: 32929342 PMCID: PMC7481409 DOI: 10.7150/thno.46835] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023] Open
Abstract
Rationale: Systemic lupus erythematosus (SLE) is a multi-organ autoimmune disease characterized by autoantibody production by hyper-activated B cells. Although mesenchymal stem cells (MSCs) ameliorate lupus symptoms by inhibiting T cells, whether they inhibit B cells has been controversial. Here we address this issue and reveal how to prime MSCs to inhibit B cells and improve the efficacy of MSCs in SLE. Methods: We examined the effect of MSCs on purified B cells in vitro and the therapeutic efficacy of MSCs in lupus-prone MRL.Faslpr mice. We screened chemicals for their ability to activate MSCs to inhibit B cells. Results: Mouse bone marrow-derived MSCs inhibited mouse B cells in a CXCL12-dependent manner, whereas human bone marrow-derived MSCs (hMSCs) did not inhibit human B (hB) cells. We used a chemical approach to overcome this hurdle and found that phorbol myristate acetate (PMA), phorbol 12,13-dibutyrate, and ingenol-3-angelate rendered hMSCs capable of inhibiting IgM production by hB cells. As to the mechanism, PMA-primed hMSCs attracted hB cells in a CXCL10-dependent manner and induced hB cell apoptosis in a PD-L1-dependent manner. Finally, we showed that PMA-primed hMSCs were better than naïve hMSCs at ameliorating SLE progression in MRL.Faslpr mice. Conclusion: Taken together, our data demonstrate that phorbol esters might be good tool compounds to activate MSCs to inhibit B cells and suggest that our chemical approach might allow for improvements in the therapeutic efficacy of hMSCs in SLE.
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Yang Y, Li S, Jin ZR, Jing HB, Zhao HY, Liu BH, Liang YJ, Liu LY, Cai J, Wan Y, Xing GG. Decreased abundance of TRESK two-pore domain potassium channels in sensory neurons underlies the pain associated with bone metastasis. Sci Signal 2018; 11. [DOI: 10.1126/scisignal.aao5150] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Bone metastasis–associated VEGF suppresses neuronal K
+
channels and increases pain in rats.
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Affiliation(s)
- Yue Yang
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Song Li
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Zi-Run Jin
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Hong-Bo Jing
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Hong-Yan Zhao
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Bo-Heng Liu
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Ya-Jing Liang
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Ling-Yu Liu
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Jie Cai
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - You Wan
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
| | - Guo-Gang Xing
- Department of Neurobiology, School of Basic Medical Sciences and Neuroscience Research Institute, Peking University, Beijing 100083, China
- Key Laboratory for Neuroscience, Ministry of Education of China and National Committee of Health and Family Planning of China, Peking University, Beijing 100083, China
- Second Affiliated Hospital of Xinxiang Medical University, Henan, China
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Joshi J, Mahajan G, Kothapalli CR. Three-dimensional collagenous niche and azacytidine selectively promote time-dependent cardiomyogenesis from human bone marrow-derived MSC spheroids. Biotechnol Bioeng 2018; 115:2013-2026. [PMID: 29665002 DOI: 10.1002/bit.26714] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 12/15/2017] [Revised: 03/16/2018] [Accepted: 04/09/2018] [Indexed: 12/22/2022]
Abstract
Endogenous adult cardiac regenerative machinery is not capable of replacing the lost cells following myocardial infarction, often leading to permanent alterations in structure-function-mechanical properties. Regenerative therapies based on delivering autologous stem cells within an appropriate 3D milieu could meet such demand, by enabling homing and directed differentiation of the transplanted cells into lost specialized cell populations. Since type I collagen is the predominant cardiac tissue matrix protein, we here optimized the 3D niche which could promote time-dependent evolution of cardiomyogenesis from human bone marrow-derived mesenchymal stem cells (BM-MSC). 3D collagen gel physical and mechanical characteristics were assessed using SEM and AFM, respectively, while the standalone and combined effects of collagen concentration, culture duration, and 5-azacytidine (aza) dose on the phenotype and genotype of MSC spheroids were quantified using immunofluorescence labeling and RT-PCR analysis. Increasing collagen concentration led to a significant increase in Young's modulus (p < 0.01) but simultaneous decrease in the mean pore size, resulting in stiffer gels. Spheroid formation significantly modulated MSC differentiation and genotype, mostly due to better cell-cell interactions. Among the aza dosages tested, 10 μM appears to be optimal, while 3 mg/ml gels resulted in significantly lower cell viability compared to 1 or 2 mg/ml gels. Stiffer gels (2 and 3 mg/ml) and exposure to 10 μM aza upregulated early and late cardiac marker expressions in a time-dependent fashion. On the other hand, cell-cell signaling within the MSC spheroids seem to have a strong role in influencing mature cardiac markers expression, since neither aza nor gel stiffness seem to significantly improve their expression. Western blot analysis suggested that canonical Wnt/β-catenin signaling pathway might be primarily mediating the observed benefits of aza on cardiac differentiation of MSC spheroids. In conclusion, 2 mg/ml collagen and 10 μM aza appears to offer optimal 3D microenvironment in terms of cell viability and time-dependent evolution of cardiomyogenesis from human BM-MSCs, with significant applications in cardiac tissue engineering and stem cell transplantation for regenerating lost cardiac tissue.
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Affiliation(s)
- Jyotsna Joshi
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio
| | - Gautam Mahajan
- Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, Ohio
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