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Hou Y, Chen M, Bian Y, Hu Y, Chuan J, Zhong L, Zhu Y, Tong R. Insights into vaccines for elderly individuals: from the impacts of immunosenescence to delivery strategies. NPJ Vaccines 2024; 9:77. [PMID: 38600250 PMCID: PMC11006855 DOI: 10.1038/s41541-024-00874-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/28/2024] [Indexed: 04/12/2024] Open
Abstract
Immunosenescence increases the risk and severity of diseases in elderly individuals and leads to impaired vaccine-induced immunity. With aging of the global population and the emerging risk of epidemics, developing adjuvants and vaccines for elderly individuals to improve their immune protection is pivotal for healthy aging worldwide. Deepening our understanding of the role of immunosenescence in vaccine efficacy could accelerate research focused on optimizing vaccine delivery for elderly individuals. In this review, we analyzed the characteristics of immunosenescence at the cellular and molecular levels. Strategies to improve vaccination potency in elderly individuals are summarized, including increasing the antigen dose, preparing multivalent antigen vaccines, adding appropriate adjuvants, inhibiting chronic inflammation, and inhibiting immunosenescence. We hope that this review can provide a review of new findings with regards to the impacts of immunosenescence on vaccine-mediated protection and inspire the development of individualized vaccines for elderly individuals.
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Affiliation(s)
- Yingying Hou
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Min Chen
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Yuan Bian
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Yuan Hu
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Junlan Chuan
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Lei Zhong
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
| | - Yuxuan Zhu
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
| | - Rongsheng Tong
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
- Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
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Li Y, Zhang M, Li Y, Shen Y, Wang X, Li X, Wang Y, Yu T, Lv J, Qin Y. Flagellar hook protein FlgE promotes macrophage activation and atherosclerosis by targeting ATP5B. Atherosclerosis 2024; 390:117429. [PMID: 38278062 DOI: 10.1016/j.atherosclerosis.2023.117429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND AND AIMS Pseudomonas aeruginosa (P. aeruginosa) infections are strongly linked to the development of cardiovascular disease and atherosclerosis; however, the underlying mechanisms remain unclear. We previously confirmed that the flagellar hook protein FlgE in P. aeruginosa has immunostimulatory effects. This study investigated the effects and mechanisms of action of FlgE on atherogenesis. METHODS ApoE-/- mice were intravenously challenged with FlgE or FlgEM recombinant proteins for eight weeks. A murine model of chronic lung colonization was established using beads containing either mutable- or wild-type bacteria. Aortic sinus sections were stained to assess atherosclerosis progression. THP-1 macrophages exposed to FlgE or FlgEM were evaluated for their effects on lipid uptake and inflammation in vitro. Western blotting and pull-down assays were used to identify the binding proteins and signaling pathways involved, and specific blocking experiments were performed to confirm these effects. RESULTS FlgE accelerated atherosclerosis progression by triggering lipid deposition and inflammatory responses in high-fat diet (HFD)-fed ApoE-/- mice. In comparison to infection with wild-type PAO1, infection with PAO1/flgEΔBmF resulted in reduced atherosclerosis. Mechanistic analysis indicated that FlgE exacerbated lipoprotein uptake and foam cell formation by upregulating SR-A1 expression. Moreover, FlgE activated NF-κB and MAPK signaling, which subsequently led to inflammatory responses in THP-1-derived macrophages. Pull-down assays revealed that FlgE directly interacted with ATP5B, whereas blocking ATP5B attenuated FlgE-induced responses in macrophages. CONCLUSIONS FlgE induces macrophage lipid uptake and pro-inflammatory responses mediated by ATP5B/NF-kB/AP-1 signaling, which eventually results in atherosclerosis. These findings support the development of therapeutic strategies for P. aeruginosa infection-induced atherosclerosis.
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Affiliation(s)
- Yuanyuan Li
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Min Zhang
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Yanmeng Li
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Ying Shen
- National Clinical Research Center for Hematologic Disease, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou Medical College, Suchow University, Suzhou, 215006, China
| | - Xiaoping Wang
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China
| | - Xiaolu Li
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, 266000, China
| | - Yiqiang Wang
- Wisdom Lake Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266000, China.
| | - Jie Lv
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China.
| | - Yan Qin
- Department of Laboratory Examination, People's Hospital of Rizhao City, The Affiliated Hospital of Jining Medical College, Rizhao, China.
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Lim JS, Jeon EJ, Go HS, Kim HJ, Kim KY, Nguyen TQT, Lee DY, Kim KS, Pietrocola F, Hong SH, Lee SE, Kim KS, Park TS, Choi DH, Jeong YJ, Park JH, Kim HS, Min JJ, Kim YS, Park JT, Cho JH, Lee GW, Lee JH, Choy HE, Park SC, Lee CH, Rhee JH, Serrano M, Cho KA. Mucosal TLR5 activation controls healthspan and longevity. Nat Commun 2024; 15:46. [PMID: 38167804 PMCID: PMC10761998 DOI: 10.1038/s41467-023-44263-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 12/06/2023] [Indexed: 01/05/2024] Open
Abstract
Addressing age-related immunological defects through therapeutic interventions is essential for healthy aging, as the immune system plays a crucial role in controlling infections, malignancies, and in supporting tissue homeostasis and repair. In our study, we show that stimulating toll-like receptor 5 (TLR5) via mucosal delivery of a flagellin-containing fusion protein effectively extends the lifespan and enhances the healthspan of mice of both sexes. This enhancement in healthspan is evidenced by diminished hair loss and ocular lens opacity, increased bone mineral density, improved stem cell activity, delayed thymic involution, heightened cognitive capacity, and the prevention of pulmonary lung fibrosis. Additionally, this fusion protein boosts intestinal mucosal integrity by augmenting the surface expression of TLR5 in a certain subset of dendritic cells and increasing interleukin-22 (IL-22) secretion. In this work, we present observations that underscore the benefits of TLR5-dependent stimulation in the mucosal compartment, suggesting a viable strategy for enhancing longevity and healthspan.
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Affiliation(s)
- Jae Sung Lim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Eun Jae Jeon
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Hye Sun Go
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Hyung-Jin Kim
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Kye Young Kim
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Thi Quynh Trang Nguyen
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Da Young Lee
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Kyu Suk Kim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Federico Pietrocola
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Seol Hee Hong
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Shee Eun Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Tae-Shin Park
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Dong-Hee Choi
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Yu-Jin Jeong
- Department of Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jong-Hwan Park
- Department of Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hyeon Sik Kim
- Medical Photonic Research Center, Korea Photonics Technology Institute, Gwangju, 61007, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Yong Sook Kim
- Biomedical Research Institute, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Joon Tae Park
- Department of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jae-Ho Cho
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Gil-Woo Lee
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Ji Hyeon Lee
- Department of Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | - Hyon E Choy
- Department of Microbiology, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Sang Chul Park
- Future Life and Society Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
| | - Joon Haeng Rhee
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Department of Microbiology, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain.
- Altos Labs, Cambridge Institute of Science, Cambridge, UK.
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea.
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Future Life and Society Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
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D’Alessio A. Unraveling the Cave: A Seventy-Year Journey into the Caveolar Network, Cellular Signaling, and Human Disease. Cells 2023; 12:2680. [PMID: 38067108 PMCID: PMC10705299 DOI: 10.3390/cells12232680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
In the mid-1950s, a groundbreaking discovery revealed the fascinating presence of caveolae, referred to as flask-shaped invaginations of the plasma membrane, sparking renewed excitement in the field of cell biology. Caveolae are small, flask-shaped invaginations in the cell membrane that play crucial roles in diverse cellular processes, including endocytosis, lipid homeostasis, and signal transduction. The structural stability and functionality of these specialized membrane microdomains are attributed to the coordinated activity of scaffolding proteins, including caveolins and cavins. While caveolae and caveolins have been long appreciated for their integral roles in cellular physiology, the accumulating scientific evidence throughout the years reaffirms their association with a broad spectrum of human disorders. This review article aims to offer a thorough account of the historical advancements in caveolae research, spanning from their initial discovery to the recognition of caveolin family proteins and their intricate contributions to cellular functions. Furthermore, it will examine the consequences of a dysfunctional caveolar network in the development of human diseases.
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Affiliation(s)
- Alessio D’Alessio
- Sezione di Istologia ed Embriologia, Dipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, 00168 Roma, Italy;
- Fondazione Policlinico Universitario “Agostino Gemelli”, IRCCS, 00168 Rome, Italy
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Wang X, Qiu W, Liu H, He M, He W, Li Z, Wu Z, Xu X, Chen P. The inducible secreting TLR5 agonist, CBLB502, enhances the anti-tumor activity of CAR133-NK92 cells in colorectal cancer. Cancer Biol Med 2023; 20:j.issn.2095-3941.2023.0033. [PMID: 37731205 PMCID: PMC10546094 DOI: 10.20892/j.issn.2095-3941.2023.0033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 07/17/2023] [Indexed: 09/22/2023] Open
Abstract
OBJECTIVE CAR-T/NK cells have had limited success in the treatment of solid tumors, such as colorectal cancer (CRC), in part because of the heterogeneous nature of tumor-associated antigens that lead to antigen-negative relapse after the initial response. This barrier might be overcome by enhancing the recruitment and durability of endogenous immune cells. METHODS Immunohistochemistry and flow cytometry were used to assess the expression of CD133 antigen in tissue microarrays and cell lines, respectively. Retroviral vector transduction was used to generate CBLB502-secreting CAR133-NK92 cells (CAR133-i502-NK92). The tumor killing capacity of CAR133-NK92 cells in vitro and in vivo were quantified via LDH release, the RTCA assay, and the degranulation test, as well as measuring tumor bioluminescence signal intensity in mice xenografts. RESULTS We engineered CAR133-i502-NK92 cells and demonstrated that those cells displayed enhanced proliferation (9.0 × 104 cells vs. 7.0 × 104 cells) and specific anti-tumor activities in vitro and in a xenogeneic mouse model, and were well-tolerated. Notably, CBLB502 secreted by CAR133-i502-NK92 cells effectively activated endogenous immune cells. Furthermore, in hCD133+/hCD133- mixed cancer xenograft models, CAR133-i502-NK92 cells suppressed cancer growth better than the counterparts (n = 5, P = 0.0297). Greater T-cell infiltration was associated with greater anti-tumor potency (P < 0.0001). CONCLUSIONS Armed with a CBLB502 TLR5 agonist, CAR133-NK92 cells were shown to be capable of specifically eliminating CD133-positive colon cancer cells in a CAR133-dependent manner and indirectly eradicating CD133-negative colon cancer cells in a CBLB502-specific endogenous immune response manner. This study describes a novel technique for optimizing CAR-T/NK cells for the treatment of antigenically-diverse solid tumors.
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Affiliation(s)
- Xiaohui Wang
- College of Biotechnology, Southwest University, Chongqing 400715, China
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Wei Qiu
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325035, China
| | - Haoyu Liu
- College of Biotechnology, Southwest University, Chongqing 400715, China
| | - Min He
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Wei He
- College of Biotechnology, Southwest University, Chongqing 400715, China
| | - Zhan Li
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Zhiqiang Wu
- Department of Biotherapeutics, The First Medical Center, Chinese PLA General Hospital, Beijing 100038, China
| | - Xiang Xu
- Department of Stem Cell & Regenerative Medicine, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Ping Chen
- College of Biotechnology, Southwest University, Chongqing 400715, China
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Zhang Y, Zhou J, Hua L, Li P, Wu J, Shang S, Deng F, Luo J, Liao M, Wang N, Pan X, Yuan Y, Zheng Y, Lu Y, Huang Y, Zheng J, Liu X, Li X, Zhou H. Vitamin D receptor (VDR) on the cell membrane of mouse macrophages participates in the formation of lipopolysaccharide tolerance: mVDR is related to the effect of artesunate to reverse LPS tolerance. Cell Commun Signal 2023; 21:124. [PMID: 37248534 DOI: 10.1186/s12964-023-01137-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 04/22/2023] [Indexed: 05/31/2023] Open
Abstract
It is unclear whether membrane vitamin D receptor (mVDR) exists on the macrophage membrane or whether mVDR is associated with lipopolysaccharide (LPS) tolerance. Herein, we report that interfering with caveolae and caveolae-dependent lipid rafts inhibited the formation of LPS tolerance. VDR was detected as co-localized with membrane molecular markers. VDR was detected on the cell membrane and its level was higher in LPS-tolerant cells than that in only LPS treatment cells. Anti-VDR antibodies could abolish the effect of artesunate (AS) to reverse LPS tolerance, and the wild-type peptides (H397 and H305) of VDR, but not the mutant peptide (H397D and H305A), led to the loss of AS's effect. AS decreased the mVDR level in LPS-tolerant cells. In vivo, AS significantly reduced VDR level in the lung tissue of LPS-tolerant mice. In summary, mVDR exists on the cell membrane of macrophages and is closely associated with the formation of LPS tolerance and the effects of AS. Video Abstract.
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Affiliation(s)
- Yu Zhang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Jun Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Ling Hua
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Pan Li
- Department of Pharmacology, College of Pharmacy, Army Medical University (Third Military Medical University), Chongqing, 400038, PR China
| | - Jiaqi Wu
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China
| | - Shenglan Shang
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China
| | - Fei Deng
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Jing Luo
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Mengling Liao
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Nuoyan Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Xichun Pan
- Department of Pharmacology, College of Pharmacy, Army Medical University (Third Military Medical University), Chongqing, 400038, PR China
| | - Yue Yuan
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Yue Zheng
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China
| | - Yonglin Lu
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China
| | - Yasi Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China
| | - Jiang Zheng
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China
| | - Xin Liu
- Medical Research Centre, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, PR China.
| | - Xiaoli Li
- Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China.
- Chongqing Key Laboratory of Drug Metabolism, Chongqing, 400016, China.
| | - Hong Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
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7
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Papa V, Li Pomi F, Borgia F, Vaccaro M, Pioggia G, Gangemi S. Immunosenescence and Skin: A State of Art of Its Etiopathogenetic Role and Crucial Watershed for Systemic Implications. Int J Mol Sci 2023; 24:ijms24097956. [PMID: 37175661 PMCID: PMC10178319 DOI: 10.3390/ijms24097956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Immunosenescence is a complex multifactorial phenomenon consisting of wide-ranging remodeling of the immune system during the life span, resulting in an age-related qualitative-quantitative decline of immune cells and cytokines. A growing body of evidence in the international literature is highlighting the etiopathogenetic role of skin immunosenescence in the onset of various dermatologic conditions. Skin immunosenescence also serves as an interesting watershed for the onset of system-wide conditions in the context of allergic inflammation. Moreover, in recent years, an increasingly emerging and fascinating etiopathogenetic parallelism has been observed between some mechanisms of immunosenescence, both at cutaneous and systemic sites. This would help to explain the occurrence of apparently unconnected comorbidities. Throughout our review, we aim to shed light on emerging immunosenescent mechanisms shared between dermatologic disorders and other organ-specific diseases in the context of a more extensive discussion on the etiopathogenetic role of skin immunosenescence. A promising future perspective would be to focus on better understanding the mutual influence between skin and host immunity, as well as the influence of high inter-individual variability on immunosenescence/inflammaging. This can lead to a more comprehensive "immunobiographic" definition of each individual.
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Affiliation(s)
- Vincenzo Papa
- Department of Clinical and Experimental Medicine, School and Operative Unit of Allergy and Clinical Immunology, University of Messina, 98125 Messina, Italy
| | - Federica Li Pomi
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Francesco Borgia
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Mario Vaccaro
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), 98164 Messina, Italy
| | - Sebastiano Gangemi
- Department of Clinical and Experimental Medicine, School and Operative Unit of Allergy and Clinical Immunology, University of Messina, 98125 Messina, Italy
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Takamura N, Yamaguchi Y. Involvement of caveolin-1 in skin diseases. Front Immunol 2022; 13:1035451. [PMID: 36532050 PMCID: PMC9748611 DOI: 10.3389/fimmu.2022.1035451] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/17/2022] [Indexed: 12/02/2022] Open
Abstract
The skin is the outermost layer and largest organ in the human body. Since the skin interfaces with the environment, it has a variety of roles, including providing a protective barrier against external factors, regulating body temperature, and retaining water in the body. It is also involved in the immune system, interacting with immune cells residing in the dermis. Caveolin-1 (CAV-1) is essential for caveolae formation and has multiple functions including endocytosis, lipid homeostasis, and signal transduction. CAV-1 is known to interact with a variety of signaling molecules and receptors and may influence cell proliferation and migration. Several skin-related disorders, especially those of the inflammatory or hyperproliferative type such as skin cancers, psoriasis, fibrosis, and wound healing, are reported to be associated with aberrant CAV-1 expression. In this review, we have explored CAV-1 involvement in skin physiology and skin diseases.
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9
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Goutas A, Outskouni Z, Papathanasiou I, Satra M, Koliakos G, Trachana V. Dysregulation of Caveolin-1 Phosphorylation and Nuclear Translocation Is Associated with Senescence Onset. Cells 2021; 10:cells10112939. [PMID: 34831162 PMCID: PMC8616550 DOI: 10.3390/cells10112939] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 11/30/2022] Open
Abstract
We recently reported that the inability of osteoarthritic (OA) chondrocytes to repair oxidative stress (OS) induced DNA damage is linked to Cav-1 overexpression/improper localization. We speculated that the senescent status of OA cells was responsible for this Cav-1 dysregulation. Here, to further investigate this hypothesis, we used Wharton Jelly derived mesenchymal stem cells (WJ-MSCs) and investigated Cav-1 function as cells reached replicative senescence or upon stress induced senescence (SIPS). We showed that Cav-1 is upregulated, phosphorylated and translocated to the nucleus in young WJ-MSCs upon acute exogenous OS, and that it returns back to basal/nonphosphorylated levels and exports the nucleus in the recovery phase. However, as cells reach senescence, this regulation is lost. OS did not induce any Cav-1-mediated response, which is concomitant with the inability of older cells to restore DNA damage. Furthermore, downregulation of Cav-1 resulted in persistent OS-induced DNA damage and subsequent onset of senescence. We also report that the establishment of senescence is mediated by autophagy stimulation, since downregulation of autophagy key molecule Atg5, simultaneously with Cav-1 downregulation, was found to inhibit SIPS. Basically, we propose that Cav-1 involvement in DNA damage response can lead to senescence, either because the damage is extensive or because Cav-1 is absent/unable to perform its homeostatic role.
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Affiliation(s)
- Andreas Goutas
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Zozo Outskouni
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Ioanna Papathanasiou
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - Maria Satra
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
| | - George Koliakos
- Biohellenika, Biotechnology Company, 57001 Thessaloniki, Greece;
- Department of Biological Chemistry, Medical School, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Varvara Trachana
- Department of Biology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Biopolis, 41500 Larissa, Greece; (A.G.); (Z.O.); (I.P.); (M.S.)
- Correspondence: ; Tel.: +30-2410-685624
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10
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Chen X, Wang L, Wu Y, Zhang H, Dong W, Yu X, Huang C, Li Y, Wang S, Zhang J. Caveolin-1 knockout mice have altered serum N-glycan profile and sialyltransferase tissue expression. J Physiol Biochem 2021; 78:73-83. [PMID: 34462883 DOI: 10.1007/s13105-021-00840-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 08/19/2021] [Indexed: 10/20/2022]
Abstract
Caveolin-1 (Cav-1) is a constitutive protein within caveolar membranes. Previous studies from our group and others indicated that Cav-1 could mediate N-glycosylation, α2,6-sialylation, and fucosylation in mouse hepatocarcinoma cells in vitro. However, little is known about the effect of Cav-1 expression on glycosylation modifications in vivo. In this study, the N-glycan profiles in serum from Cav-1-/- mice were investigated by lectin microarray and mass spectrometric analysis approaches. The results showed that levels of multi-antennary branched, α2,6-sialylated, and galactosylated N-glycans increased, while high-mannose typed and fucosylated N-glycans decreased in the serum of Cav-1-/- mice, compared with that of wild-type mice. Furthermore, the real-time quantitative PCR analysis indicated that α2,6-sialyltransferase gene expression decreased significantly in Cav-1-/- mouse organ tissues, but α2,3- and α2,8-sialyltransferase did not. Of them, both mRNA and protein expression levels of the β-galactoside α2,6-sialyltransferase 1 (ST6Gal-I) had dramatically reduced in Cav-1-/- mice organ tissues, which was consistent with the α2,6-sialyl Gal/GalNAc level reduced significantly in tissues instead of serum from Cav-1-/- mice. These results provide for the first time the N-glycans profile of Cav-1-/- mice serum, which will facilitate understanding the function of Cav-1 from the perspective of glycosylation.
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Affiliation(s)
- Xixi Chen
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 124221, Liaoning, China
| | - Liping Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 124221, Liaoning, China
| | - Yinshuang Wu
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Hongshuo Zhang
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Weijie Dong
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Xiao Yu
- Department of Pathology, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Chuncui Huang
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yan Li
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.,University of The Chinese Academy of Sciences, Beijing, 100049, China
| | - Shujing Wang
- Department of Biochemistry and Molecular Biology, Institute of Glycobiology, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Jianing Zhang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, 124221, Liaoning, China.
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11
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Uthaman S, Pillarisetti S, Hwang HS, Mathew AP, Huh KM, Rhee JH, Park IK. Tumor Microenvironment-Regulating Immunosenescence-Independent Nanostimulant Synergizing with Near-Infrared Light Irradiation for Antitumor Immunity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:4844-4852. [PMID: 33486952 DOI: 10.1021/acsami.0c20063] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The combination of photothermal therapy (PTT) and toll-like receptor (TLR)-mediated immunotherapy can elicit antitumor immunity and modulate the immunosuppressive tumor microenvironment (TME). Unlike other TLRs, TLR-5 is a promising target for immune activation, as its expression is well-maintained even during immunosenescence. Here, we developed a unique tumor microenvironment-regulating immunosenescence-independent nanostimulant consisting of TLR-5 adjuvant Vibrio vulnificus flagellin B (FlaB) conjugated onto the surface to an IR 780-loaded hyaluronic acid-stearylamine (HIF) micelles. These HIF micelles induced immune-mediated cell death via PTT when irradiated with a near-infrared laser. In comparison with PTT alone, the combination of in situ-generated tumor-associated antigens produced during PTT and the immune adjuvant FlaB demonstrated enhanced vaccine-like properties and modulated the TME by suppressing immune-suppressive regulatory cells (Tregs) and increasing the fraction of CD103+ migratory dendritic cells, which are responsible for trafficking tumor antigens to draining lymph nodes (DLNs). This combinatorial strategy (i.e., applying a TLR-5 adjuvant targeted to immunosenescence-independent TLR-5 and the in situ photothermal generation of tumor-associated antigens) is a robust system for next-generation immunotherapy and could even be applied in elderly patients, thus broadening the clinical scope of immunotherapy strategies.
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Affiliation(s)
- Saji Uthaman
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Shameer Pillarisetti
- Department of Biomedical Sciences, Chonnam National University Medical School, 160 Baekseo-ro, Gwangju 58128, Republic of Korea
| | - Hye Suk Hwang
- Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam 58128, Republic of Korea
| | - Ansuja Pulickal Mathew
- Department of Biomedical Sciences, Chonnam National University Medical School, 160 Baekseo-ro, Gwangju 58128, Republic of Korea
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Joon Haeng Rhee
- Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam 58128, Republic of Korea
- Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun-gun, Jeonnam 58128, Republic of Korea
| | - In-Kyu Park
- Department of Biomedical Sciences, Chonnam National University Medical School, 160 Baekseo-ro, Gwangju 58128, Republic of Korea
- Combinatorial Tumor Immunotherapy MRC, Chonnam National University Medical School, Hwasun-gun, Jeonnam 58128, Republic of Korea
- Immunotherapy Innovation Center, Chonnam National University, Hwasun-gun, Jeonnam 58128, Republic of Korea
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12
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Abstract
Cellular senescence is a feature of most somatic cells. It is characterized by an irreversible cell cycle arrest and by the ability to secrete a plethora of mediators of inflammation and growth factors, which can alter the senescent cell's microenvironment. Senescent cells accumulate in tissues over time and contribute to both aging and the development of age-associated diseases. Senescent cells have antagonistic pleiotropic roles in cancer. Given the inability of senescent cells to proliferate, cellular senescence is a powerful tumor suppressor mechanism in young individuals. However, accumulation of senescent stromal cells during aging can fuel cancer cell growth in virtue of their capacity to release factors that stimulate cell proliferation. Caveolin-1 is a structural protein component of caveolae, invaginations of the plasma membrane involved in a variety of cellular processes, including signal transduction. Mounting evidence over the last 10-15 years has demonstrated a central role of caveolin-1 in the development of a senescent phenotype and the regulation of both the anti-tumorigenic and pro-tumorigenic properties of cellular senescence. In this review, we discuss the cellular mechanisms and functions of caveolin-1 in the context of cellular senescence and their relevance to the biology of cancer.
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13
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Lipocalin2 Induced by Bacterial Flagellin Protects Mice against Cyclophosphamide Mediated Neutropenic Sepsis. Microorganisms 2020; 8:microorganisms8050646. [PMID: 32365611 PMCID: PMC7284693 DOI: 10.3390/microorganisms8050646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 12/12/2022] Open
Abstract
Neutropenic sepsis is a fatal consequence of chemotherapy, and septic complications are the principal cause of mortality. Chemotherapy-induced neutropenia leads to the formation of microscopic ulcers in the gastrointestinal epithelium that function as a portal of entry for intraluminal bacteria, which translocate across the intestinal mucosal barrier and gain access to systemic sites, causing septicemia. A cyclophosphamide-induced mouse model was developed to mimic the pathophysiologic sequence of events that occurs in patients with neutropenic sepsis. The TLR5 agonist bacterial flagellin derived from Vibrio vulnificus extended the survival of cyclophosphamide-treated mice by reducing the bacterial load in internal organs. The protective effect of flagellin was mediated by the antimicrobial protein lipocalin 2 (Lcn2), which is induced by TLR5-NF-κB activation in hepatocytes. Lcn2 sequestered iron from infecting bacteria, particularly siderophore enterobactin-dependent members of the Enterobacteriaceae family, thereby limiting their proliferation. Lcn2 should be considered for the treatment of neutropenic sepsis and gastrointestinal damage during chemotherapy to prevent or minimize the adverse effects of cancer chemotherapy.
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14
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Altered miRNA and mRNA Expression in Sika Deer Skeletal Muscle with Age. Genes (Basel) 2020; 11:genes11020172. [PMID: 32041309 PMCID: PMC7073773 DOI: 10.3390/genes11020172] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 12/18/2022] Open
Abstract
Studies of the gene and miRNA expression profiles associated with the postnatal late growth, development, and aging of skeletal muscle are lacking in sika deer. To understand the molecular mechanisms of the growth and development of sika deer skeletal muscle, we used de novo RNA sequencing (RNA-seq) and microRNA sequencing (miRNA-seq) analyses to determine the differentially expressed (DE) unigenes and miRNAs from skeletal muscle tissues at 1, 3, 5, and 10 years in sika deer. A total of 51,716 unigenes, 171 known miRNAs, and 60 novel miRNAs were identified based on four mRNA and small RNA libraries. A total of 2,044 unigenes and 11 miRNAs were differentially expressed between adolescence and juvenile sika deer, 1,946 unigenes and 4 miRNAs were differentially expressed between adult and adolescent sika deer, and 2,209 unigenes and 1 miRNAs were differentially expressed between aged and adult sika deer. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses showed that DE unigenes and miRNA were mainly related to energy and substance metabolism, processes that are closely associate with the growth, development, and aging of skeletal muscle. We also constructed mRNA–mRNA and miRNA–mRNA interaction networks related to the growth, development, and aging of skeletal muscle. The results show that mRNA (Myh1, Myh2, Myh7, ACTN3, etc.) and miRNAs (miR-133a, miR-133c, miR-192, miR-151-3p, etc.) may play important roles in muscle growth and development, and mRNA (WWP1, DEK, UCP3, FUS, etc.) and miRNAs (miR-17-5p, miR-378b, miR-199a-5p, miR-7, etc.) may have key roles in muscle aging. In this study, we determined the dynamic miRNA and unigenes transcriptome in muscle tissue for the first time in sika deer. The age-dependent miRNAs and unigenes identified will offer insights into the molecular mechanism underlying muscle development, growth, and maintenance and will also provide valuable information for sika deer genetic breeding.
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15
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Lee DY, Lim JS, Cho KA. Differential Activation of Macrophages Based on Their Environment in Advanced Age. Chonnam Med J 2020; 56:12-19. [PMID: 32021837 PMCID: PMC6976772 DOI: 10.4068/cmj.2020.56.1.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/10/2019] [Accepted: 12/13/2019] [Indexed: 11/29/2022] Open
Abstract
The macrophage displays functional and phenotypic diversity, which appears, in no small part, to stem from the ability of macrophages to adapt functionally to changes in their tissue microenvironment. Here, we describe the differential activity of peritoneal macrophages with or without the presence of thioglycollate (TG), an inflammatory drug that encouraged the recruitment of macrophages, during aging. The peritoneal-resident macrophages dramatically reduced in phagocytosis and pro-inflammatory cytokines secretion with aging, whereas the functions of macrophages recruited by TG were not significantly changed with aging. These results suggest that macrophages may be changed by their environment in advanced age, and could provide possible explanations for the controversial results regarding differential changes in macrophages in other papers.
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Affiliation(s)
- Da Young Lee
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Korea.,Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun, Korea
| | - Jae Sung Lim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Korea.,Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun, Korea
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Hwasun, Korea.,Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun, Korea
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16
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Puth S, Hong SH, Na HS, Lee HH, Lee YS, Kim SY, Tan W, Hwang HS, Sivasamy S, Jeong K, Kook JK, Ahn SJ, Kang IC, Ryu JH, Koh JT, Rhee JH, Lee SE. A built-in adjuvant-engineered mucosal vaccine against dysbiotic periodontal diseases. Mucosal Immunol 2019; 12:565-579. [PMID: 30487648 DOI: 10.1038/s41385-018-0104-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 09/27/2018] [Accepted: 10/15/2018] [Indexed: 02/04/2023]
Abstract
Periodontitis is associated with a dysbiotic shift in the oral microbiome. Vaccine approaches to prevent microbial shifts from healthy to diseased state in oral biofilms would provide a fundamental therapeutic strategy against periodontitis. Since dental plaque formation is a polymicrobial and multilayered process, vaccines targeting single bacterial species would have limited efficacy in clinical applications. In this study, we developed a divalent mucosal vaccine consisting of a mixture of FlaB-tFomA and Hgp44-FlaB fusion proteins targeting virulence factors of inflammophilic bacteria Fusobacterium nucleatum and Porphyromonas gingivalis, respectively. Introduction of peptide linkers between FlaB and antigen improved the stability and immunogenicity of engineered vaccine antigens. The intranasal immunization of divalent vaccine induced protective immune responses inhibiting alveolar bone loss elicited by F. nucleatum and P. gingivalis infection. The built-in flagellin adjuvant fused to protective antigens enhanced antigen-specific antibody responses and class switch recombination. The divalent vaccine antisera recognized natural forms of surface antigens and reacted with diverse clinical isolates of Fusobacterium subspecies and P. gingivalis. The antisera inhibited F. nucleatum-mediated biofilm formation, co-aggregation of P. gingivalis and Treponema denticola, and P. gingivalis-host cell interactions. Taken together, the built-in adjuvant-engineered mucosal vaccine provides a technological platform for multivalent periodontitis vaccines targeting dysbiotic microbiome.
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Affiliation(s)
- Sao Puth
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Seol Hee Hong
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hee Sam Na
- Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, 50612, Republic of Korea
| | - Hye Hwa Lee
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Youn Suhk Lee
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Soo Young Kim
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Wenzhi Tan
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Hye Suk Hwang
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sethupathy Sivasamy
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Kwangjoon Jeong
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea.,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Joong-Ki Kook
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, 61452, Republic of Korea
| | - Sug-Joon Ahn
- Dental Research Institute and Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, 03080, Republic of Korea
| | - In-Chol Kang
- Department of Oral Microbiology, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Je-Hwang Ryu
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jeong Tae Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Joon Haeng Rhee
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea. .,Department of Microbiology, Chonnam National University Medical School, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| | - Shee Eun Lee
- Clinical Vaccine R&D Center, Chonnam National University, Hwasun-gun, Jeonnam, 58128, Republic of Korea. .,Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea.
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17
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Recombinant flagellins with deletions in domains D1, D2, and D3: Characterization as novel immunoadjuvants. Vaccine 2018; 37:652-663. [PMID: 30583910 DOI: 10.1016/j.vaccine.2018.12.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/29/2018] [Accepted: 12/02/2018] [Indexed: 12/17/2022]
Abstract
Bacterial flagellin activates the innate immune system and ultimately the adaptive immune system through a Toll-like receptor 5 (TLR5)-dependent signaling mechanism. Given that TLR5 is widely distributed in epithelia, flagellin is currently being developed as a mucosal adjuvant. Flagellin FliC from Salmonella enterica has four domains: the conserved D0 and D1 domains and the hypervariable D2 and D3 domains. The deletion of D3 and partial deletion of D2 in the recombinant FliCΔ174-400 strongly impairs flagellin's intrinsic antigenicity but does not affect the TLR5-dependent immunostimulation activity, i.e., the capacity to promote innate responses and adaptive responses to co-administered antigens. Here, we describe the development of novel recombinant flagellins with various deletions encompassing all of D2 and D3, and part of D1. Most of the recombinant molecules conserved an α-helical secondary structure that was as resistant to heat denaturation as the native protein. Whereas the recombinant flagellins' ability to trigger TLR5 varied markedly in vitro, most gave equivalent in vivo TLR5-dependent innate immune responses following intranasal administration of 2 μg of flagellin to mice. Concordantly, the recombinant flagellins were also valuable respiratory adjuvants for eliciting antibody responses to the foreign antigen ovalbumin, although their intrinsic antigenicity was decreased compared to the native flagellin and not increased compared to FliCΔ174-400. Our results show that the additional deletions of D2 and the distal part of D1 of FliCΔ174-400 does not impact on antigenicity and does not significantly modify the immunostimulatory adjuvant activity. Altogether, this study generated a novel set of recombinant flagellin that constitutes a portfolio of TLR5-dependent candidate adjuvants for vaccination.
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18
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Weinberger B. Adjuvant strategies to improve vaccination of the elderly population. Curr Opin Pharmacol 2018; 41:34-41. [PMID: 29677646 DOI: 10.1016/j.coph.2018.03.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 03/30/2018] [Indexed: 10/17/2022]
Abstract
Immunosenescence contributes to increased incidence and severity of many infections in old age and is responsible for impaired immunogenicity and efficacy of vaccines. Adjuvants are one strategy to enhance immunogenicity of vaccines. The oil-in-water emulsions MF59TM and AS03, as well as a virosomal vaccine have been licensed in seasonal or pandemic influenza vaccines and are/were used successfully in the elderly. AS01, a liposome-based adjuvant comprising two immunostimulants has recently been approved in a recombinant protein vaccine for older adults, which showed very high efficacy against herpes zoster in clinical trials. Several adjuvants for use in the older population are in clinical and preclinical development and will hopefully improve vaccines for this age group in the future.
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Affiliation(s)
- Birgit Weinberger
- Institute for Biomedical Aging Research, Universität Innsbruck, Innsbruck, Austria.
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19
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de Almeida CJG. Caveolin-1 and Caveolin-2 Can Be Antagonistic Partners in Inflammation and Beyond. Front Immunol 2017; 8:1530. [PMID: 29250058 PMCID: PMC5715436 DOI: 10.3389/fimmu.2017.01530] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/27/2017] [Indexed: 12/26/2022] Open
Abstract
Caveolins, encoded by the CAV gene family, are the main protein components of caveolae. In most tissues, caveolin-1 (Cav-1) and caveolin-2 (Cav-2) are co-expressed, and Cav-2 targeting to caveolae depends on the formation of heterooligomers with Cav-1. Notwithstanding, Cav-2 has unpredictable activities, opposing Cav-1 in the regulation of some cellular processes. While the major roles of Cav-1 as a modulator of cell signaling in inflammatory processes and in immune responses have been extensively discussed elsewhere, the aim of this review is to focus on data revealing the distinct activity of Cav-1 and Cav-2, which suggest that these proteins act antagonistically to fine-tune a variety of cellular processes relevant to inflammation.
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20
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Puth S, Hong SH, Park MJ, Lee HH, Lee YS, Jeong K, Kang IC, Koh JT, Moon B, Park SC, Rhee JH, Lee SE. Mucosal immunization with a flagellin-adjuvanted Hgp44 vaccine enhances protective immune responses in a murine Porphyromonas gingivalis infection model. Hum Vaccin Immunother 2017; 13:2794-2803. [PMID: 28604268 PMCID: PMC5718812 DOI: 10.1080/21645515.2017.1327109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Chronic periodontitis is caused by interactions between the oral polymicrobial community and host factors. Periodontal diseases are associated with dysbiotic shift in oral microbiota. Vaccination against periodontopathic bacteria could be a fundamental therapeutic to modulate polymicrobial biofilms. Because oral cavity is the site of periodontopathic bacterial colonization, mucosal vaccines should provide better protection than vaccines administered systemically. We previously reported that bacterial flagellin is an excellent mucosal adjuvant. In this study, we investigated whether mucosal immunization with a flagellin-adjuvanted polypeptide vaccine induces protective immune responses using a Porphyromonas gingivalis infection model. We used the Hgp44 domain polypeptide of Arg-gingipain A (RgpA) as a mucosal antigen. Intranasal (IN) immunization induced a significantly higher Hgp44-specific IgG titer in the serum of mice than sublingual (SL) administration. The co-administration of flagellin potentiated serum IgG responses for both the IN and SL vaccinations. On the other hand, the anti-Hgp44-specific IgA titer in the saliva was comparable between IN and SL vaccinations, suggesting SL administration as more compliant vaccination route for periodontal vaccines. The co-administration of flagellin significantly potentiated the secretory IgA response in saliva also. Furthermore, mice administered a mixture of Hgp44 and flagellin via the IN and SL routes exhibited significant reductions in alveolar bone loss induced by live P. gingivalis infections. An intranasally administered Hgp44-flagellin fusion protein induced a comparable level of Hgp44-specific antibody responses to the mixture of Hgp44 and flagellin. Overall, a flagellin-adjuvanted Hgp44 antigen would serve an important component for a multivalent mucosal vaccine against polymicrobial periodontitis.
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Affiliation(s)
- Sao Puth
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,b Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Seol Hee Hong
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,b Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Mi Jin Park
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,b Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Hye Hwa Lee
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,c Department of Pharmacology and Dental Therapeutics, School of Dentistry , Chonnam National University , Gwangju , Republic of Korea ; Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Youn Suhk Lee
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,c Department of Pharmacology and Dental Therapeutics, School of Dentistry , Chonnam National University , Gwangju , Republic of Korea ; Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Kwangjoon Jeong
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,b Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - In-Chol Kang
- d Department of Oral Microbiology, School of Dentistry , Chonnam National University , Gwangju , Republic of Korea
| | - Jeong Tae Koh
- c Department of Pharmacology and Dental Therapeutics, School of Dentistry , Chonnam National University , Gwangju , Republic of Korea ; Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Byounggon Moon
- e Well Aging Research Center, Samsung Adv. Inst. of Technology (SAIT) , Samsung Electronics Co., Ltd. Suwon-si , Gyeonggi-do , Republic of Korea
| | - Sang Chul Park
- e Well Aging Research Center, Samsung Adv. Inst. of Technology (SAIT) , Samsung Electronics Co., Ltd. Suwon-si , Gyeonggi-do , Republic of Korea
| | - Joon Haeng Rhee
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,b Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
| | - Shee Eun Lee
- a Clinical Vaccine R&D Center , Chonnam National University , Hwasun-gun , Jeonnam , Republic of Korea.,c Department of Pharmacology and Dental Therapeutics, School of Dentistry , Chonnam National University , Gwangju , Republic of Korea ; Department of Microbiology , Chonnam National University Medical School , Hwasun-gun , Jeonnam , Republic of Korea
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Boule LA, Kovacs EJ. Alcohol, aging, and innate immunity. J Leukoc Biol 2017; 102:41-55. [PMID: 28522597 DOI: 10.1189/jlb.4ru1016-450r] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/24/2017] [Accepted: 04/13/2017] [Indexed: 12/15/2022] Open
Abstract
The global population is aging: in 2010, 8% of the population was older than 65 y, and that is expected to double to 16% by 2050. With advanced age comes a heightened prevalence of chronic diseases. Moreover, elderly humans fair worse after acute diseases, namely infection, leading to higher rates of infection-mediated mortality. Advanced age alters many aspects of both the innate and adaptive immune systems, leading to impaired responses to primary infection and poor development of immunologic memory. An often overlooked, yet increasingly common, behavior in older individuals is alcohol consumption. In fact, it has been estimated that >40% of older adults consume alcohol, and evidence reveals that >10% of this group is drinking more than the recommended limit by the National Institute on Alcohol Abuse and Alcoholism. Alcohol consumption, at any level, alters host immune responses, including changes in the number, phenotype, and function of innate and adaptive immune cells. Thus, understanding the effect of alcohol ingestion on the immune system of older individuals, who are already less capable of combating infection, merits further study. However, there is currently almost nothing known about how drinking alters innate immunity in older subjects, despite innate immune cells being critical for host defense, resolution of inflammation, and maintenance of immune homeostasis. Here, we review the effects of aging and alcohol consumption on innate immune cells independently and highlight the few studies that have examined the effects of alcohol ingestion in aged individuals.
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Affiliation(s)
- Lisbeth A Boule
- Department of Surgery, Division of GI, Trauma, and Endocrine Surgery (GITES), University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA; .,The Mucosal Inflammation Program (MIP), University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA.,The Investigations in Metabolism, Aging, Gender and Exercise (IMAGE) Research Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA; and
| | - Elizabeth J Kovacs
- Department of Surgery, Division of GI, Trauma, and Endocrine Surgery (GITES), University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA; .,The Mucosal Inflammation Program (MIP), University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA.,The Investigations in Metabolism, Aging, Gender and Exercise (IMAGE) Research Group, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA; and.,The Immunology Graduate Program, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado, USA
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MicroRNAs miR-203-3p, miR-664-3p and miR-708-5p are associated with median strain lifespan in mice. Sci Rep 2017; 7:44620. [PMID: 28304372 PMCID: PMC5356331 DOI: 10.1038/srep44620] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 02/10/2017] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNA species that have been shown to have roles in multiple processes that occur in higher eukaryotes. They act by binding to specific sequences in the 3’ untranslated region of their target genes and causing the transcripts to be degraded by the RNA-induced silencing complex (RISC). MicroRNAs have previously been reported to demonstrate altered expression in several aging phenotypes such as cellular senescence and age itself. Here, we have measured the expression levels of 521 small regulatory microRNAs (miRNAs) in spleen tissue from young and old animals of 6 mouse strains with different median strain lifespans by quantitative real-time PCR. Expression levels of 3 microRNAs were robustly associated with strain lifespan, after correction for multiple statistical testing (miR-203-3p [β-coefficient = −0.6447, p = 4.8 × 10−11], miR-664-3p [β-coefficient = 0.5552, p = 5.1 × 10−8] and miR-708-5p [β-coefficient = 0.4986, p = 1.6 × 10−6]). Pathway analysis of binding sites for these three microRNAs revealed enrichment of target genes involved in key aging and longevity pathways including mTOR, FOXO and MAPK, most of which also demonstrated associations with longevity. Our results suggests that miR-203-3p, miR-664-3p and miR-708-5p may be implicated in pathways determining lifespan in mammals.
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Nguyen KCT, Cho KA. Versatile Functions of Caveolin-1 in Aging-related Diseases. Chonnam Med J 2017; 53:28-36. [PMID: 28184336 PMCID: PMC5299127 DOI: 10.4068/cmj.2017.53.1.28] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/10/2016] [Accepted: 10/11/2016] [Indexed: 12/24/2022] Open
Abstract
Caveolin-1 (Cav-1) is a trans-membrane protein that is a major component of the caveolae structure on the plasma membrane. Cav-1 is involved in the regulation of various cellular processes, including cell growth, differentiation, endocytosis, and in particular it has been implied in cellular senescence. Here we review current knowledge about Cav-1 in cellular signaling and discuss the role of Cav-1 in aging-related diseases.
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Affiliation(s)
- Kim Cuc Thi Nguyen
- Deparment of Life Science, ThaiNguyen University of Science, TanThinh Ward, ThaiNguyen, VietNam
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
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Abstract
Human immune system aging results in impaired responses to pathogens or vaccines. In the innate immune system, which mediates the earliest pro-inflammatory responses to immunologic challenge, processes ranging from Toll-like Receptor function to Neutrophil Extracellular Trap formation are generally diminished in older adults. Dysregulated, enhanced basal inflammation with age reflecting activation by endogenous damage-associated ligands contributes to impaired innate immune responses. In the adaptive immune system, T and B cell subsets and function alter with age. The control of cytomegalovirus infection, particularly in the T lineage, plays a dominant role in the differentiation and diversity of the T cell compartment.
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Affiliation(s)
- Thilinie Bandaranayake
- Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - Albert C Shaw
- Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06520, USA.
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Lim JS, Nguyen KCT, Han JM, Jang IS, Fabian C, Cho KA. Direct Regulation of TLR5 Expression by Caveolin-1. Mol Cells 2015; 38:1111-7. [PMID: 26615831 PMCID: PMC4697003 DOI: 10.14348/molcells.2015.0213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/24/2015] [Accepted: 09/25/2015] [Indexed: 02/02/2023] Open
Abstract
Toll-like receptor 5 (TLR5) is a specific receptor for microbial flagellin and is one of the most well-known receptors in the TLR family. We reported previously that TLR5 signaling is well maintained during aging and that caveolin-1 may be involved in TLR5 signaling in aged macrophages through direct interactions. Therefore, it is important to clarify whether caveolin-1/TLR5 interactions affect TLR5 expression during aging. To assess the effect of caveolin-1 on TLR5, we analyzed TLR5 expression in senescent fibroblasts and aged tissues expressing high levels of caveolin-1. As expected, TLR5 mRNA and protein expression was well maintained in senescent fibroblasts and aged tissues, whereas TLR4 mRNA and protein were diminished in those cells and tissues. To determine the mechanism of caveolin-1-dependent TLR5 expression, we examined TLR5 expression in caveolin-1 deficient mice. Interestingly, TLR5 mRNA and protein levels were decreased dramatically in tissues from caveolin-1 knockout mice. Moreover, overexpressed caveolin-1 in vitro enhanced TLR5 mRNA through the MAPK pathway and prolonged TLR5 protein half-life through direct interaction. These results suggest that caveolin-1 may play a crucial role in maintaining of TLR5 by regulating transcription systems and increasing protein half-life.
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Affiliation(s)
- Jae Sung Lim
- Department of Biochemistry, Chonnam National University Medical School, Gwangju 501-746,
Korea
- Clinical Vaccine R&D Center, Chonnam National University Hwasun Hospital, Hwasun 519-809,
Korea
| | - Kim Cuc Thi Nguyen
- Department of Biochemistry, Chonnam National University Medical School, Gwangju 501-746,
Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Gwangju 501-746,
Korea
| | - Jung Min Han
- Department of Integrated OMICS for Biomedical Science, Yonsei University, Seoul 120-749,
Korea
- College of Pharmacy, Yonsei University, Incheon 406-840,
Korea
| | - Ik-Soon Jang
- Division of life Science, Korea Basic Science Institute, Daejeon 305-333,
Korea
| | - Claire Fabian
- Department of Immunology, Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig,
Germany
- Translational Center for Regenerative Medicine (TRM), University of Leipzig, 04103 Leipzig,
Germany
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Gwangju 501-746,
Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Gwangju 501-746,
Korea
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-746,
Korea
- Clinical Vaccine R&D Center, Chonnam National University Hwasun Hospital, Hwasun 519-809,
Korea
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