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Zhao Y, Li P, Wang X, Wu Y, Liu L, Zhao R. A novel pectin polysaccharide from vinegar-baked Radix Bupleuri absorbed by microfold cells in the form of nanoparticles. Int J Biol Macromol 2024; 266:131096. [PMID: 38522695 DOI: 10.1016/j.ijbiomac.2024.131096] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 02/08/2024] [Accepted: 03/20/2024] [Indexed: 03/26/2024]
Abstract
Polysaccharides of vinegar-baked Radix Bupleuri (VBCP) have been reported to exhibit liver-targeting and immunomodulatory activities through oral administration, but the absorption behavior and mechanism of VBCPs have not been extensively studied. In this study, a novel HG type pectin polysaccharide, VBCP1-4, with a high molecular weight of 2.94 × 106 Da, was separated from VBCP. VBCP1-4 backbone was contained 1,4-α-D-GalpA, 1,4-α-D-GalpA6OMe, 1,3,4-α-D-GalpA and 1,2,4-α-D-Rhap. The branches were mainly contained 1,5-α-L-Araf, 1,3,5-α-L-Araf, t-α-L-Araf and t-α-D-Galp, which linked to the 3 position of 1,3,4-α-D-GalpA and the 4 position of 1,2,4-α-D-Rhap. VBCP1-4 could self-assemble to nanoparticles in water, with CMC values of 106.41 μg/mL, particle sizes of 178.20 ± 2.82 nm and zeta potentials of -23.19 ± 1.44 mV. The pharmacokinetic study of VBCP1-4, which detected by marking with FITC, revealed that it could be partially absorbed into the body through Peyer's patches of the ileum. In vitro absorption study demonstrated that VBCP1-4 was difficult to be absorbed by Caco-2 cell monolayer, but could be absorbed by M cells in a time and concentration dependent manner. The absorption mechanism was elucidated that VBCP1-4 entered M cells through clathrin-mediated endocytosis in the form of nanoparticles. These findings provide valuable insights into the absorption behavior of VBCP and contribute to its further development.
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Affiliation(s)
- Ya Zhao
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Ping Li
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Xiaoshuang Wang
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yayun Wu
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Neihuan Xilu, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Lijuan Liu
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Ruizhi Zhao
- State Key Laboratory of Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China; State Key Laboratory of Dampaness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Neihuan Xilu, Guangzhou Higher Education Mega Center, Guangzhou 510006, China.
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Zeinali S, Sutton K, Zefreh MG, Mabbott N, Vervelde L. Discrimination of distinct chicken M cell subsets based on CSF1R expression. Sci Rep 2024; 14:8795. [PMID: 38627516 PMCID: PMC11021470 DOI: 10.1038/s41598-024-59368-x] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
In mammals, a subset of follicle-associated epithelial (FAE) cells, known as M cells, conduct the transcytosis of antigens across the epithelium into the underlying lymphoid tissues. We previously revealed that M cells in the FAE of the chicken lung, bursa of Fabricius (bursa), and caecum based on the expression of CSF1R. Here, we applied RNA-seq analysis on highly enriched CSF1R-expressing bursal M cells to investigate their transcriptome and identify novel chicken M cell-associated genes. Our data show that, like mammalian M cells, those in the FAE of the chicken bursa also express SOX8, MARCKSL1, TNFAIP2 and PRNP. Immunohistochemical analysis also confirmed the expression of SOX8 in CSF1R-expressing cells in the lung, bursa, and caecum. However, we found that many other mammalian M cell-associated genes such as SPIB and GP2 were not expressed by chicken M cells or represented in the chicken genome. Instead, we show bursal M cells express high levels of related genes such as SPI1. Whereas our data show that bursal M cells expressed CSF1R-highly, the M cells in the small intestine lacked CSF1R and both expressed SOX8. This study offers insights into the transcriptome of chicken M cells, revealing the expression of CSF1R in M cells is tissue-specific.
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Affiliation(s)
- Safieh Zeinali
- Division of Immunology, The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, EH25 9RG, UK
| | - Kate Sutton
- Division of Immunology, The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, EH25 9RG, UK.
| | - Masoud Ghaderi Zefreh
- Division of Genetics and Genomics, The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, EH25 9RG, UK
| | - Neil Mabbott
- Division of Immunology, The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, EH25 9RG, UK
| | - Lonneke Vervelde
- Division of Immunology, The Roslin Institute & Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, EH25 9RG, UK.
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Barr J, Xu L, Li R, Verheyden J, Sun X. Airway Microfold Cells Emerge in the Post-Influenza Lung. Am J Respir Cell Mol Biol 2024; 70:322-325. [PMID: 38127584 DOI: 10.1165/rcmb.2023-0351le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023] Open
Affiliation(s)
- Justinn Barr
- University of California, San Diego La Jolla, California
| | - Le Xu
- University of California, San Diego La Jolla, California
| | - Rongbo Li
- University of California, San Diego La Jolla, California
| | | | - Xin Sun
- University of California, San Diego La Jolla, California
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Han S. Unveiling an Important New Cell Type in the Lung: Microfold Cells. Am J Respir Cell Mol Biol 2024; 70:235-236. [PMID: 38301262 DOI: 10.1165/rcmb.2024-0002ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/01/2024] [Indexed: 02/03/2024] Open
Affiliation(s)
- SeungHye Han
- Department of Medicine Northwestern University Chicago, Illinois
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5
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Xie L, Zhang Y, Chen L, Wang T, Zhang S, Li X. Structural changes of layer-by-layer self-assembled starch-based nanocapsules in the gastrointestinal tract: Implications for their M cell-targeting delivery and transport efficiency. Int J Biol Macromol 2024; 261:129786. [PMID: 38286362 DOI: 10.1016/j.ijbiomac.2024.129786] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/13/2024] [Accepted: 01/24/2024] [Indexed: 01/31/2024]
Abstract
Characterizing the structural changes of cell-targeting delivery carriers in gastrointestinal tract (GIT) is crucial for understanding their effectiveness in cell targeting and transport. Herein, RGD peptide-grafted carboxymethyl starch (CMS) and cationic quaternary ammonium starch (QAS) were utilized to fabricate quintet-layered nanocapsules loaded with ovalbumin (OVA). The aim was to improve delivery and transportation efficiency, specifically targeting M cells. The research analyzed the impact of pH and enzyme variations in GIT on the structure of nanocapsules, interactions between carriers and the release behavior of OVA. Results showed that the size of nanocapsules increased from 229.2 to 479.8 nm and the zeta potential decreased from -1.08 to -33.33 mV during oral delivery. This was evident in TEM images, showing a more relaxed core-shell structure. Isothermal titration calorimetry and molecular dynamic simulation indicated that pH changes primarily affected the electrostatic interaction between carriers. Increasing pH led to reduced affinity constants, and around 84.42 % of OVA was successfully delivered to M cells. Moreover, the transport efficiency of nanocapsules to M cells was five times greater than that of Caco-2 cells. This suggests the feasibility of developing a nanocapsules delivery system capable of adapting to pH changes in GIT by regulating electrostatic interactions between carriers.
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Affiliation(s)
- Lei Xie
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yiping Zhang
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Ling Chen
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Tianxing Wang
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Shuo Zhang
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaoxi Li
- Ministry of Education Engineering Research Center of Starch and Protein Processing, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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Zhang F, Shi T, Zhang Z, Wang S, Liu J, Li Y, Wang X, Liu K, Guo L. An M cell-targeting recombinant L. lactis vaccine against four H. pylori adhesins. Appl Microbiol Biotechnol 2024; 108:231. [PMID: 38396242 PMCID: PMC10891252 DOI: 10.1007/s00253-024-13070-0] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/23/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The acidic environment and enzyme degradation lead to oral vaccines often having little immune effect. Therefore, it is an attractive strategy to study an effective and safe oral vaccine delivery system that can promote gastrointestinal mucosal immune responses and inhibit antigen degradation. Moreover, the antigens uptake by microfold cells (M cells) is the determining step in initiating efficient immune responses. Therefore, M cell-targeting is one promising approach for enhancing oral vaccine potency. In the present study, an M cell-targeting L. lactis surface display system (plSAM) was built to favor the multivalent epitope vaccine antigen (FAdE) to achieve effective gastrointestinal mucosal immunity against Helicobacter pylori. Therefore, a recombinant Lactococcus lactic acid vaccine (LL-plSAM-FAdE) was successfully prepared, and its immunological properties and protective efficacy were analyzed. The results showed that LL-plSAM-FAdE can secretively express the recombinant proteins SAM-FAdE and display the SAM-FAdE on the bacterial cell surface. More importantly, LL-plSAM-FAdE effectively promoted the phagocytosis and transport of vaccine antigen by M cells in the gastrointestinal tract of mice, and simulated high levels of cellular and humoral immune responses against four key H. pylori adhesins (Urease, CagL, HpaA, and Lpp20) in the gastrointestinal tract, thus enabling effective prevention of H. pylori infection and to some extent eliminating H. pylori already present in the gastrointestinal tract. KEY POINTS: • M-cell-targeting L. lactis surface display system LL- plSAM was designed • This system displays H. pylori vaccine-promoted phagocytosis and transport of M cell • A promising vaccine candidate for controlling H. pylori infection was verified.
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Affiliation(s)
- Furui Zhang
- School of Laboratory, Ningxia Medical University, Yinchuan, 750004, China
| | - Tianyi Shi
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China
| | - Zhen Zhang
- Department of Geriatrics and Special Needs Medicine, General Hospital of Ningxia Medical University, Yinchuan, 750004, China
| | - Shue Wang
- School of Laboratory, Ningxia Medical University, Yinchuan, 750004, China
| | - Jing Liu
- School of Laboratory, Ningxia Medical University, Yinchuan, 750004, China
| | - Yonghong Li
- School of Public Health and Management, Ningxia Medical University, Yinchuan, 750004, China
| | - Xuequan Wang
- Key Laboratory of Radiation Oncology of Taizhou, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, China.
| | - Kunmei Liu
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.
- Ningxia Key Laboratory of Cerebrocranial Diseases, Ningxia Medical University, Yinchuan, 750004, China.
| | - Le Guo
- School of Laboratory, Ningxia Medical University, Yinchuan, 750004, China.
- Key Laboratory of Radiation Oncology of Taizhou, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, 317000, China.
- Ningxia Key Laboratory of Clinical and Pathogenic Microbiology, General Hospital of Ningxia Medical University, Yinchuan, 750004, China.
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Surve MV, Lin B, Reedy JL, Crossen AJ, Xu A, Klein BS, Vyas JM, Rajagopal J. Single-Cell Transcriptomes, Lineage, and Differentiation of Functional Airway Microfold Cells. Am J Respir Cell Mol Biol 2023; 69:698-701. [PMID: 38038398 PMCID: PMC10704116 DOI: 10.1165/rcmb.2023-0292le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023] Open
Affiliation(s)
- Manalee V. Surve
- Massachusetts General HospitalBoston, Massachusetts
- Harvard Stem Cell InstituteCambridge, Massachusetts
- Broad Institute of MIT and HarvardCambridge, Massachusetts
| | - Brian Lin
- Massachusetts General HospitalBoston, Massachusetts
- Harvard Stem Cell InstituteCambridge, Massachusetts
- Broad Institute of MIT and HarvardCambridge, Massachusetts
- Tufts University School of MedicineBoston, Massachusetts
| | - Jennifer L. Reedy
- Massachusetts General HospitalBoston, Massachusetts
- Harvard Medical SchoolBoston, Massachusetts
| | | | - Anthony Xu
- Massachusetts General HospitalBoston, Massachusetts
- Harvard UniversityCambridge, Massachusetts
| | - Bruce S. Klein
- University of Wisconsin School of Medicine and Public HealthMadison, Wisconsin
| | - Jatin M. Vyas
- Massachusetts General HospitalBoston, Massachusetts
- Harvard Medical SchoolBoston, Massachusetts
| | - Jayaraj Rajagopal
- Massachusetts General HospitalBoston, Massachusetts
- Harvard Stem Cell InstituteCambridge, Massachusetts
- Broad Institute of MIT and HarvardCambridge, Massachusetts
- Harvard Medical SchoolBoston, Massachusetts
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Yue Z, Lin J, Lu X, Gao Q, Pan M, Zhang Y, Shen S, Zhu WG, Paus R. Keratin 17 Impacts Global Gene Expression and Controls G2/M Cell Cycle Transition in Ionizing Radiation-Induced Skin Damage. J Invest Dermatol 2023; 143:2436-2446.e13. [PMID: 37414246 DOI: 10.1016/j.jid.2023.02.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 07/08/2023]
Abstract
Keratin 17 (K17) is a cytoskeletal protein that is part of the intermediate filaments in epidermal keratinocytes. In K17-/- mice, ionizing radiation induced more severe hair follicle damage, whereas the epidermal inflammatory response was attenuated compared with that in wild-type mice. Both p53 and K17 have a major impact on global gene expression because over 70% of the differentially expressed genes in the skin of wild-type mice showed no expression change in p53-/- or K17-/- skin after ionizing radiation. K17 does not interfere with the dynamics of p53 activation; rather, global p53 binding in the genome is altered in K17-/- mice. The absence of K17 leads to aberrant cell cycle progression and mitotic catastrophe in epidermal keratinocytes, which is due to nuclear retention, thus reducing the degradation of B-Myb, a key regulator of the G2/M cell cycle transition. These results expand our understanding of the role of K17 in regulating global gene expression and ionizing radiation-induced skin damage.
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Affiliation(s)
- ZhiCao Yue
- Department of Cell Biology & Medical Genetics, Shenzhen University Medical School, Shenzhen, China; International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China.
| | - JianQiong Lin
- Department of Cell Biology & Medical Genetics, Shenzhen University Medical School, Shenzhen, China; International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China
| | - XiaoPeng Lu
- International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China; Department of Biochemistry & Molecular Biology, Shenzhen University Medical School, Shenzhen, China
| | - QingXiang Gao
- Institute of Life Sciences, Fuzhou University, Fuzhou, China
| | - MeiPing Pan
- Institute of Life Sciences, Fuzhou University, Fuzhou, China
| | - YaFei Zhang
- Department of Cell Biology & Medical Genetics, Shenzhen University Medical School, Shenzhen, China; International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China
| | - SiTing Shen
- Department of Cell Biology & Medical Genetics, Shenzhen University Medical School, Shenzhen, China; International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China
| | - Wei-Guo Zhu
- International Cancer Center, Shenzhen University Medical School, Shenzhen, China; Guangdong Key Laboratory of Genome Instability and Human Disease Prevention, Shenzhen University Medical School, Shenzhen, China; Department of Biochemistry & Molecular Biology, Shenzhen University Medical School, Shenzhen, China
| | - Ralf Paus
- Dr. Philip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA; Center for Dermatology Research, School of Biological Sciences, The University of Manchester and NIHR Biomedical Research Center, Manchester, United Kingdom
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Kim N, Ju IG, Jeon SH, Lee Y, Jung MJ, Gee MS, Cho JS, Inn KS, Garrett-Sinha LA, Oh MS, Lee JK. Inhibition of microfold cells ameliorates early pathological phenotypes by modulating microglial functions in Alzheimer's disease mouse model. J Neuroinflammation 2023; 20:282. [PMID: 38012646 PMCID: PMC10680211 DOI: 10.1186/s12974-023-02966-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND The gut microbiota has recently attracted attention as a pathogenic factor in Alzheimer's disease (AD). Microfold (M) cells, which play a crucial role in the gut immune response against external antigens, are also exploited for the entry of pathogenic bacteria and proteins into the body. However, whether changes in M cells can affect the gut environments and consequently change brain pathologies in AD remains unknown. METHODS Five familial AD (5xFAD) and 5xFAD-derived fecal microbiota transplanted (5xFAD-FMT) naïve mice were used to investigate the changes of M cells in the AD environment. Next, to establish the effect of M cell depletion on AD environments, 5xFAD mice and Spib knockout mice were bred, and behavioral and histological analyses were performed when M cell-depleted 5xFAD mice were six or nine months of age. RESULTS In this study, we found that M cell numbers were increased in the colons of 5xFAD and 5xFAD-FMT mice compared to those of wild-type (WT) and WT-FMT mice. Moreover, the level of total bacteria infiltrating the colons increased in the AD-mimicked mice. The levels of M cell-related genes and that of infiltrating bacteria showed a significant correlation. The genetic inhibition of M cells (Spib knockout) in 5xFAD mice changed the composition of the gut microbiota, along with decreasing proinflammatory cytokine levels in the colons. M cell depletion ameliorated AD symptoms including amyloid-β accumulation, microglial dysfunction, neuroinflammation, and memory impairment. Similarly, 5xFAD-FMT did not induce AD-like pathologies, such as memory impairment and excessive neuroinflammation in Spib-/- mice. CONCLUSION Therefore, our findings provide evidence that the inhibiting M cells can prevent AD progression, with therapeutic implications.
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Affiliation(s)
- Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - In Gyoung Ju
- Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, Seoul, Republic of Korea
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Seung Ho Jeon
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Yeongae Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Min-Ji Jung
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Min Sung Gee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Jae Seok Cho
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Kyung-Soo Inn
- Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Lee Ann Garrett-Sinha
- Department of Biochemistry, State University of New York at Buffalo, Buffalo, NY, USA
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, Republic of Korea.
- Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, Seoul, Republic of Korea.
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea.
| | - Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea.
- Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, Seoul, Republic of Korea.
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Saini J, Deere TM, Lessner DJ. The minimal SUF system is not required for Fe-S cluster biogenesis in the methanogenic archaeon Methanosarcina acetivorans. Sci Rep 2023; 13:15120. [PMID: 37704679 PMCID: PMC10500019 DOI: 10.1038/s41598-023-42400-x] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023] Open
Abstract
Iron-sulfur (Fe-S) proteins are essential for the ability of methanogens to carry out methanogenesis and biological nitrogen fixation (diazotrophy). Nonetheless, the factors involved in Fe-S cluster biogenesis in methanogens remain largely unknown. The minimal SUF Fe-S cluster biogenesis system (i.e., SufBC) is postulated to serve as the primary system in methanogens. Here, the role of SufBC in Methanosarcina acetivorans, which contains two sufCB gene clusters, was investigated. The CRISPRi-dCas9 and CRISPR-Cas9 systems were utilized to repress or delete sufC1B1 and sufC2B2, respectively. Neither the dual repression of sufC1B1 and sufC2B2 nor the deletion of both sufC1B1 and sufC2B2 affected the growth of M. acetivorans under any conditions tested, including diazotrophy. Interestingly, deletion of only sufC1B1 led to a delayed-growth phenotype under all growth conditions, suggesting that the deletion of sufC2B2 acts as a suppressor mutation in the absence of sufC1B1. In addition, the deletion of sufC1B1 and/or sufC2B2 did not affect the total Fe-S cluster content in M. acetivorans cells. Overall, these results reveal that the minimal SUF system is not required for Fe-S cluster biogenesis in M. acetivorans and challenge the universal role of SufBC in Fe-S cluster biogenesis in methanogens.
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Affiliation(s)
- Jasleen Saini
- Department of Biological Sciences, University of Arkansas-Fayetteville, Fayetteville, AR, USA
| | - Thomas M Deere
- Department of Biological Sciences, University of Arkansas-Fayetteville, Fayetteville, AR, USA
| | - Daniel J Lessner
- Department of Biological Sciences, University of Arkansas-Fayetteville, Fayetteville, AR, USA.
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Pirog JT, Tuten WS. Poster Session: Towards Understanding Retinal Processing of Single-Cone Scale Stimulation. J Vis 2023; 23:64. [PMID: 37733514 DOI: 10.1167/jov.23.11.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023] Open
Abstract
The magnocellular (M) visual pathway can be distinguished from its finer-grained parvocellular (P) counterpart by its stronger response gain to contrasts near human detection threshold. This distinction is found when stimulus size is matched to the relatively large receptive field size of M cells, but it is less clear if preserved at smaller spatial scales. We examined foveal detection thresholds in tandem with a masking paradigm known to desensitize the M pathway. We used a custom DLP display in Maxwellian view to present either 3 or 23 arcmin spots for 100 ms against a uniform gray disk (1° VA) surrounded by a 0.5 cpd, 100% contrast, square wave grating flickered at 7 frequencies ranging from 0 to 30 Hz. Detection data were fit with psychometric functions to estimate threshold and thresholds were normalized to the static (0 Hz) condition. Relative sensitivity was fit with a modified impulse response function and compared to a constant model with ANOVA. With masking we found a significant reduction in sensitivity for large (23arcmin) increments (mean=0.39 log units; n=4; p<0.01) and decrements (0.31 log units; n=4; p=0.02)at 8.3Hz. By contrast, no significant masking effect was observed for small spot increments or decrements (p>0.05). These data suggest that the M pathway is not the primary determinant of small spot thresholds under the conditions studied. Further investigation with adaptive optics may be necessary to fully elaborate single-cone processing in the fovea.
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Affiliation(s)
- J T Pirog
- Herbert Wertheim School of Optometry & Vision Science, University of California, Berkeley, Berkeley, CA USA
| | - William S Tuten
- Herbert Wertheim School of Optometry & Vision Science, University of California, Berkeley, Berkeley, CA USA
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Torow N, Li R, Hitch TCA, Mingels C, Al Bounny S, van Best N, Stange EL, Simons B, Maié T, Rüttger L, Gubbi NMKP, Abbott DA, Benabid A, Gadermayr M, Runge S, Treichel N, Merhof D, Rosshart SP, Jehmlich N, Hand TW, von Bergen M, Heymann F, Pabst O, Clavel T, Tacke F, Lelouard H, Costa IG, Hornef MW. M cell maturation and cDC activation determine the onset of adaptive immune priming in the neonatal Peyer's patch. Immunity 2023; 56:1220-1238.e7. [PMID: 37130522 PMCID: PMC10262694 DOI: 10.1016/j.immuni.2023.04.002] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/03/2023] [Accepted: 04/06/2023] [Indexed: 05/04/2023]
Abstract
Early-life immune development is critical to long-term host health. However, the mechanisms that determine the pace of postnatal immune maturation are not fully resolved. Here, we analyzed mononuclear phagocytes (MNPs) in small intestinal Peyer's patches (PPs), the primary inductive site of intestinal immunity. Conventional type 1 and 2 dendritic cells (cDC1 and cDC2) and RORgt+ antigen-presenting cells (RORgt+ APC) exhibited significant age-dependent changes in subset composition, tissue distribution, and reduced cell maturation, subsequently resulting in a lack in CD4+ T cell priming during the postnatal period. Microbial cues contributed but could not fully explain the discrepancies in MNP maturation. Type I interferon (IFN) accelerated MNP maturation but IFN signaling did not represent the physiological stimulus. Instead, follicle-associated epithelium (FAE) M cell differentiation was required and sufficient to drive postweaning PP MNP maturation. Together, our results highlight the role of FAE M cell differentiation and MNP maturation in postnatal immune development.
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Affiliation(s)
- Natalia Torow
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany.
| | - Ronghui Li
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Thomas Charles Adrian Hitch
- Functional Microbiome Research Group, Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Clemens Mingels
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Shahed Al Bounny
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Niels van Best
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany; Department of Medical Microbiology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht 6200, the Netherlands
| | - Eva-Lena Stange
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Britta Simons
- Institute of Molecular Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Tiago Maié
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Lennart Rüttger
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | | | - Darryl Adelaide Abbott
- Pediatrics Department, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
| | - Adam Benabid
- Institute for Cell and Tumor Biology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Michael Gadermayr
- Institute of Imaging & Computer Vision, RWTH Aachen University, Aachen 52056, Germany
| | - Solveig Runge
- Department of Microbiome Research, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91054, Germany; Faculty of Biology, University of Freiburg, Freiburg im Breisgau, Germany
| | - Nicole Treichel
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Dorit Merhof
- Institute of Imaging & Computer Vision, RWTH Aachen University, Aachen 52056, Germany
| | - Stephan Patrick Rosshart
- Department of Microbiome Research, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen 91054, Germany; Department of Medicine II, University of Freiburg, Freiburg im Breisgau, Germany
| | - Nico Jehmlich
- Helmholtz-Centre for Environmental Research GmbH - UFZ, Department of Molecular Systems Biology, Leipzig 04318, Germany
| | - Timothy Wesley Hand
- Pediatrics Department, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA
| | - Martin von Bergen
- Helmholtz-Centre for Environmental Research GmbH - UFZ, Department of Molecular Systems Biology, Leipzig 04318, Germany; German Centre for Integrative Biodiversity Research (iDiv), Leipzig 04103, Germany; University of Leipzig, Faculty of Life Sciences, Institute of Biochemistry, Leipzig 04103, Germany
| | - Felix Heymann
- Department of Hepatology & Gastroenterology, Charité University Hospital, Berlin 13353, Germany
| | - Oliver Pabst
- Institute of Molecular Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Thomas Clavel
- Functional Microbiome Research Group, Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Frank Tacke
- Department of Hepatology & Gastroenterology, Charité University Hospital, Berlin 13353, Germany
| | - Hugues Lelouard
- Aix Marseille University, CNRS, INSERM, CIML, Marseille 13288, France
| | - Ivan Gesteira Costa
- Institute for Computational Genomics, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Mathias Walter Hornef
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany.
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13
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Hsu NY, Nayar S, Gettler K, Talware S, Giri M, Alter I, Argmann C, Sabic K, Thin TH, Ko HBM, Werner R, Tastad C, Stappenbeck T, Azabdaftari A, Uhlig HH, Chuang LS, Cho JH. NOX1 is essential for TNFα-induced intestinal epithelial ROS secretion and inhibits M cell signatures. Gut 2023; 72:654-662. [PMID: 36191961 PMCID: PMC9998338 DOI: 10.1136/gutjnl-2021-326305] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 08/20/2022] [Indexed: 12/08/2022]
Abstract
OBJECTIVE Loss-of-function mutations in genes generating reactive oxygen species (ROS), such as NOX1, are associated with IBD. Mechanisms whereby loss of ROS drive IBD are incompletely defined. DESIGN ROS measurements and single-cell transcriptomics were performed on colonoids stratified by NOX1 genotype and TNFα stimulation. Clustering of epithelial cells from human UC (inflamed and uninflamed) scRNASeq was performed. Validation of M cell induction was performed by immunohistochemistry using UEA1 (ulex europaeus agglutin-1 lectin) and in vivo with DSS injury. RESULTS TNFα induces ROS production more in NOX1-WT versus NOX1-deficient murine colonoids under a range of Wnt-mediated and Notch-mediated conditions. scRNASeq from inflamed and uninflamed human colitis versus TNFα stimulated, in vitro colonoids defines substantially shared, induced transcription factors; NOX1-deficient colonoids express substantially lower levels of STAT3 (signal transducer and activator of transcription 3), CEBPD (CCAAT enhancer-binding protein delta), DNMT1 (DNA methyltransferase) and HIF1A (hypoxia-inducible factor) baseline. Subclustering unexpectedly showed marked TNFα-mediated induction of M cells (sentinel cells overlying lymphoid aggregates) in NOX1-deficient colonoids. M cell induction by UEA1 staining is rescued with H2O2 and paraquat, defining extra- and intracellular ROS roles in maintenance of LGR5+ stem cells. DSS injury demonstrated GP2 (glycoprotein-2), basal lymphoplasmacytosis and UEA1 induction in NOX1-deficiency. Principal components analyses of M cell genes and decreased DNMT1 RNA velocity correlate with UC inflammation. CONCLUSIONS NOX1 deficiency plus TNFα stimulation contribute to colitis through dysregulation of the stem cell niche and altered cell differentiation, enhancing basal lymphoplasmacytosis. Our findings prioritise ROS modulation for future therapies.
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Affiliation(s)
- Nai-Yun Hsu
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Shikha Nayar
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Kyle Gettler
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Sayali Talware
- Division of Gastroenterology, Icahn School of Medicine at Mount Sinai Department of Medicine, New York, New York, USA
- The Icahn Genomic Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mamta Giri
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Isaac Alter
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Carmen Argmann
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Ksenija Sabic
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Tin Htwe Thin
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Huai-Bin Mabel Ko
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York, USA
| | - Robert Werner
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Christopher Tastad
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Thaddeus Stappenbeck
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland, Ohio, USA
| | - Aline Azabdaftari
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
| | - Holm H Uhlig
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
| | - Ling-Shiang Chuang
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Judy H Cho
- Department of Pathology, Molecular and Cell Based Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Liu H, Zhang W, Jin L, Liu S, Liang L, Wei Y. Plumbagin Exhibits Genotoxicity and Induces G2/M Cell Cycle Arrest via ROS-Mediated Oxidative Stress and Activation of ATM-p53 Signaling Pathway in Hepatocellular Cells. Int J Mol Sci 2023; 24:ijms24076279. [PMID: 37047251 PMCID: PMC10094147 DOI: 10.3390/ijms24076279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Plumbagin (5-hydroxy-2-methyl-1,4-naphthoquinone, PLB), a naturally occurring naphthoquinone mainly isolated from the plant Plumbago zeylanica L., has been proven to possess anticancer activities towards multiple types of cancer. Although there has been an increasing amount of research regarding its anticancer effects, the association between oxidative stress, genotoxicity and the cell cycle arrest induced by PLB still remains unclear. Therefore, it is important to investigate their potential connections and the involvement of DNA damage and the ataxia telangiectasia mutated protein (ATM)-p53 signaling pathway in PLB’s anticancer mechanism. The present study showed that PLB exposure significantly reduced HCC cell viability and colony formation. In addition, PLB-induced G2/M cell cycle arrest, oxidative stress, and DNA damage was detected, which could be almost blocked by NAC pretreatment. PLB could trigger a DNA damage response by activating cell cycle checkpoints such as ATM, checkpoint kinase 1 (Chk1), checkpoint kinase 2 (Chk2) and p53. Meanwhile, the key modulator of the G2/M transition factor, Cell Division Cycle 25C (cdc25C), was significantly downregulated in an ROS-dependent manner. Furthermore, pretreatment with ATM and p53 inhibitors (KU55933 and Pifithrin-α) could reduce the occurrence of G2/M cell cycle arrest by inhibiting the activation of the ATM-p53 pathway. Taken together, these results indicate that ROS-mediated oxidative stress plays a key role in PLB-induced G2/M cell cycle arrest mediated by the ATM-p53 pathway.
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Affiliation(s)
- Huan Liu
- Laboratory of Medical Molecular Biology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530024, China; (H.L.)
- Guangxi Key Laboratory of Molecular Biology of Preventive Medicine of Traditional Chinese Medicine, Nanning 530024, China
| | - Wenchao Zhang
- Research Center for Non-Food Biorefinery, Guangxi Academy of Science, Nanning 530001, China
| | - Lijie Jin
- Guangxi Key Laboratory of Molecular Biology of Preventive Medicine of Traditional Chinese Medicine, Nanning 530024, China
- Department of Physiology, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Shasha Liu
- Guangxi Key Laboratory of Molecular Biology of Preventive Medicine of Traditional Chinese Medicine, Nanning 530024, China
- Department of Physiology, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Liying Liang
- Laboratory of Medical Molecular Biology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530024, China; (H.L.)
- Guangxi Key Laboratory of Molecular Biology of Preventive Medicine of Traditional Chinese Medicine, Nanning 530024, China
| | - Yanfei Wei
- Guangxi Key Laboratory of Molecular Biology of Preventive Medicine of Traditional Chinese Medicine, Nanning 530024, China
- Department of Physiology, Guangxi University of Chinese Medicine, Nanning 530200, China
- Correspondence:
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Luna Velez M, Neikes HK, Snabel RR, Quint Y, Qian C, Martens A, Veenstra G, Freeman MR, van Heeringen S, Vermeulen M. ONECUT2 regulates RANKL-dependent enterocyte and microfold cell differentiation in the small intestine; a multi-omics study. Nucleic Acids Res 2023; 51:1277-1296. [PMID: 36625255 PMCID: PMC9943655 DOI: 10.1093/nar/gkac1236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/02/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
Microfold (M) cells reside in the intestinal epithelium of Peyer's patches (PP). Their unique ability to take up and transport antigens from the intestinal lumen to the underlying lymphoid tissue is key in the regulation of the gut-associated immune response. Here, we applied a multi-omics approach to investigate the molecular mechanisms that drive M cell differentiation in mouse small intestinal organoids. We generated a comprehensive profile of chromatin accessibility changes and transcription factor dynamics during in vitro M cell differentiation, allowing us to uncover numerous cell type-specific regulatory elements and associated transcription factors. By using single-cell RNA sequencing, we identified an enterocyte and M cell precursor population. We used our newly developed computational tool SCEPIA to link precursor cell-specific gene expression to transcription factor motif activity in cis-regulatory elements, uncovering high expression of and motif activity for the transcription factor ONECUT2. Subsequent in vitro and in vivo perturbation experiments revealed that ONECUT2 acts downstream of the RANK/RANKL signalling axis to support enterocyte differentiation, thereby restricting M cell lineage specification. This study sheds new light on the mechanism regulating cell fate balance in the PP, and it provides a powerful blueprint for investigation of cell fate switches in the intestinal epithelium.
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Affiliation(s)
- Maria V Luna Velez
- Department of Molecular Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Oncode Institute, Nijmegen 6525 AJ, The Netherlands
| | - Hannah K Neikes
- Department of Molecular Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Oncode Institute, Nijmegen 6525 AJ, The Netherlands
| | - Rebecca R Snabel
- Department of Molecular Developmental Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Nijmegen 6525 AJ, The Netherlands
| | - Yarah Quint
- Department of Molecular Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Oncode Institute, Nijmegen 6525 AJ, The Netherlands
| | - Chen Qian
- Department of Surgery, Division of Cancer Biology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Aniek Martens
- Department of Molecular Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Oncode Institute, Nijmegen 6525 AJ, The Netherlands
| | - Gert Jan C Veenstra
- Department of Molecular Developmental Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Nijmegen 6525 AJ, The Netherlands
| | - Michael R Freeman
- Department of Surgery, Division of Cancer Biology, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Simon J van Heeringen
- Department of Molecular Developmental Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Nijmegen 6525 AJ, The Netherlands
| | - Michiel Vermeulen
- Department of Molecular Biology, Radboud University Nijmegen, Faculty of Science, Radboud Institute for Molecular Life Sciences, Oncode Institute, Nijmegen 6525 AJ, The Netherlands
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16
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Chuang TC, Shao WS, Hsu SC, Lee SL, Kao MC, Wang V. Baicalein Induces G 2/M Cell Cycle Arrest Associated with ROS Generation and CHK2 Activation in Highly Invasive Human Ovarian Cancer Cells. Molecules 2023; 28:molecules28031039. [PMID: 36770705 PMCID: PMC9919047 DOI: 10.3390/molecules28031039] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/13/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023] Open
Abstract
Ovarian cancer is a lethal gynecological cancer because drug resistance often results in treatment failure. The CHK2, a tumor suppressor, is considered to be an important molecular target in ovarian cancer due to its role in DNA repair. Dysfunctional CHK2 impairs DNA damage-induced checkpoints, reduces apoptosis, and confers resistance to chemotherapeutic drugs and radiation therapy in ovarian cancer cells. This provides a basis for finding new effective agents targeting CHK2 upregulation or activation to treat or prevent the progression of advanced ovarian cancer. Here, the results show that baicalein (5,6,7-trihydroxyflavone) treatment inhibits the growth of highly invasive ovarian cancer cells, and that baicalein-induced growth inhibition is mediated by the cell cycle arrest in the G2/M phase. Baicalein-induced G2/M phase arrest is associated with an increased reactive oxygen species (ROS) production, DNA damage, and CHK2 upregulation and activation. Thus, baicalein modulates the expression of DNA damage response proteins and G2/M phase regulatory molecules. Blockade of CHK2 activation by CHK2 inhibitors protects cells from baicalein-mediated G2/M cell cycle arrest. All the results suggest that baicalein has another novel growth inhibitory effect on highly invasive ovarian cancer cells, which is partly related to G2/M cell cycle arrest through the ROS-mediated DNA breakage damage and CHK2 activation. Collectively, our findings provide a molecular basis for the potential of baicalein as an adjuvant therapeutic agent in the treatment of metastatic ovarian cancer.
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Affiliation(s)
- Tzu-Chao Chuang
- Department of Chemistry, Tamkang University, New Taipei 251301, Taiwan
- Correspondence:
| | - Wei-Syun Shao
- Department of Chemistry, Tamkang University, New Taipei 251301, Taiwan
| | - Shih-Chung Hsu
- Department of Early Childhood Care and Education, University of Kang Ning, Taipei 114311, Taiwan
| | - Shou-Lun Lee
- Department of Biological Science and Technology, China Medical University, Taichung 406040, Taiwan
| | - Ming-Ching Kao
- Department of Biological Science and Technology, China Medical University, Taichung 406040, Taiwan
| | - Vinchi Wang
- Department of Neurology, Cardinal Tien Hospital, New Taipei 231009, Taiwan
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei 242062, Taiwan
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17
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Chen YY, Ren CF, Wen SY. Polyphyllin D induces G2/M Cell Cycle Arrest via Dysfunction of Cholesterol Biosynthesis in Liver Cancer Cells. Biomed Environ Sci 2023; 36:94-98. [PMID: 36650685 DOI: 10.3967/bes2023.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/04/2022] [Indexed: 06/17/2023]
Affiliation(s)
- Yan Yan Chen
- School of Medicine, Jiangsu University, Zhenjiang 212003, Jiangsu, China
| | - Cai Fang Ren
- School of Medicine, Jiangsu University, Zhenjiang 212003, Jiangsu, China
| | - Shi Yuan Wen
- College of Basic Medical Sciences, Shanxi Medical University, Taiyuan 030000, Shanxi, China
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