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Zhang Q, Tombline G, Ablaeva J, Zhang L, Zhou X, Smith Z, Zhao Y, Xiaoli AM, Wang Z, Lin JR, Jabalameli MR, Mitra J, Nguyen N, Vijg J, Seluanov A, Gladyshev VN, Gorbunova V, Zhang ZD. Genomic expansion of Aldh1a1 protects beavers against high metabolic aldehydes from lipid oxidation. Cell Rep 2021; 37:109965. [PMID: 34758328 PMCID: PMC8656434 DOI: 10.1016/j.celrep.2021.109965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 06/07/2021] [Accepted: 10/19/2021] [Indexed: 12/24/2022] Open
Abstract
The North American beaver is an exceptionally long-lived and cancer-resistant rodent species. Here, we report the evolutionary changes in its gene coding sequences, copy numbers, and expression. We identify changes that likely increase its ability to detoxify aldehydes, enhance tumor suppression and DNA repair, and alter lipid metabolism, potentially contributing to its longevity and cancer resistance. Hpgd, a tumor suppressor gene, is uniquely duplicated in beavers among rodents, and several genes associated with tumor suppression and longevity are under positive selection in beavers. Lipid metabolism genes show positive selection signals, changes in copy numbers, or altered gene expression in beavers. Aldh1a1, encoding an enzyme for aldehydes detoxification, is particularly notable due to its massive expansion in beavers, which enhances their cellular resistance to ethanol and capacity to metabolize diverse aldehyde substrates from lipid oxidation and their woody diet. We hypothesize that the amplification of Aldh1a1 may contribute to the longevity of beavers. Zhang et al. examine the genome of North American beavers and find evolutionary changes that could contribute to beavers’ longevity. In particular, Aldh1a1, encoding an enzyme for aldehyde detoxification, is massively expanded in the beaver genome, protecting them against exposure to aldehydes from lipid oxidation and their woody diet.
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Affiliation(s)
- Quanwei Zhang
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Gregory Tombline
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Julia Ablaeva
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Lei Zhang
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Xuming Zhou
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Zachary Smith
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Yang Zhao
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Alus M Xiaoli
- Departments of Medicine and Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Zhen Wang
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jhih-Rong Lin
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - M Reza Jabalameli
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Joydeep Mitra
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Nha Nguyen
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jan Vijg
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Andrei Seluanov
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Vadim N Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Vera Gorbunova
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - Zhengdong D Zhang
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY, USA.
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2
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Galletti JG, de Paiva CS. The ocular surface immune system through the eyes of aging. Ocul Surf 2021; 20:139-162. [PMID: 33621658 PMCID: PMC8113112 DOI: 10.1016/j.jtos.2021.02.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 02/04/2021] [Accepted: 02/16/2021] [Indexed: 02/06/2023]
Abstract
Since the last century, advances in healthcare, housing, and education have led to an increase in life expectancy. Longevity is accompanied by a higher prevalence of age-related diseases, such as cancer, autoimmunity, diabetes, and infection, and part of this increase in disease incidence relates to the significant changes that aging brings about in the immune system. The eye is not spared by aging either, presenting with age-related disorders of its own, and interestingly, many of these diseases have immune pathophysiology. Being delicate organs that must be exposed to the environment in order to capture light, the eyes are endowed with a mucosal environment that protects them, the so-called ocular surface. As in other mucosal sites, immune responses at the ocular surface need to be swift and potent to eliminate threats but are at the same time tightly controlled to prevent excessive inflammation and bystander damage. This review will detail how aging affects the mucosal immune response of the ocular surface as a whole and how this process relates to the higher incidence of ocular surface disease in the elderly.
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Affiliation(s)
- Jeremias G Galletti
- Innate Immunity Laboratory, Institute of Experimental Medicine (IMEX), CONICET-National Academy of Medicine, Buenos Aires, Argentina.
| | - Cintia S de Paiva
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, 77030, USA.
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Takano T, Kotaki R, Park J, Yoshida T, Wakatsuki Y, Tanokura M, Miyakawa T, Takahashi K, Nakajima-Adachi H, Hachimura S. Age-Dependent Decrease in the Induction of Regulatory T Cells Is Associated With Decreased Expression of RALDH2 in Mesenteric Lymph Node Dendritic Cells. Front Immunol 2020; 11:1555. [PMID: 32849526 PMCID: PMC7432217 DOI: 10.3389/fimmu.2020.01555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/12/2020] [Indexed: 12/27/2022] Open
Abstract
A decline in immune function with aging has been reported. Regulatory T cell (Treg) induction is known to decrease with age, and elucidating the underlying mechanism is important for preventing age-related diseases due to age-related chronic inflammation. In the intestine, dendritic cells (DCs) play an important role in inducing Tregs specific to oral antigens, and they efficiently induce Tregs via production of retinoic acid (RA), a vitamin A metabolite, catalyzed by the enzyme retinaldehyde dehydrogenase 2 (RALDH2). We have previously reported that in the mesenteric lymph node (MLN), a secondary lymphoid tissue in which immune responses to oral antigens are induced, four DC subsets express different levels of CD11b, CD103, and PD-L1, and we have reported that the CD11b–CD103+PD-L1high subset expresses the highest levels of the RALDH2 gene and induces Tregs in vitro. We examined Treg induction in young and aged mice using a Treg induction model by administering a food antigen, and we found that antigen-specific Treg induction was decreased in aged mice. We further investigated the MLN DCs, and a significant decrease in RALDH2 gene expression was observed in MLN DCs from aged mice. As factors, we found that the proportion of the CD11b–CD103+PD-L1high subset was decreased in aged mice compared with that in young mice and that RALDH enzyme activity was decreased in the CD11b–CD103+PD-L1high and CD11b+CD103+PD-L1high subsets. Furthermore, analysis of the methylation of the RALDH2 gene promoter region revealed that CpG motifs were more methylated in the MLN DCs of aged mice, suggesting that RALDH2 expression was suppressed by epigenetic changes. Finally, we found that RA treatment tended to increase Treg induction. These results suggest that the regulation of RA production may be involved in the age-related decrease in antigen-specific Treg induction.
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Affiliation(s)
- Tomohiro Takano
- Research Center for Food Safety, The University of Tokyo, Tokyo, Japan
| | - Ryutaro Kotaki
- Research Center for Food Safety, The University of Tokyo, Tokyo, Japan
| | - Jihyun Park
- Research Center for Food Safety, The University of Tokyo, Tokyo, Japan.,Department of Applied Biological Chemistry, The University of Tokyo, Tokyo, Japan
| | - Tadashi Yoshida
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yoshio Wakatsuki
- Department of Clinical Bio-Regulatory Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masaru Tanokura
- Research Center for Food Safety, The University of Tokyo, Tokyo, Japan.,Department of Applied Biological Chemistry, The University of Tokyo, Tokyo, Japan
| | - Takuya Miyakawa
- Department of Applied Biological Chemistry, The University of Tokyo, Tokyo, Japan
| | - Kyoko Takahashi
- Department of Applied Biological Science, College of Bioresource Sciences, Nihon University, Kanagawa, Japan
| | | | - Satoshi Hachimura
- Research Center for Food Safety, The University of Tokyo, Tokyo, Japan
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4
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Perfilyeva YV, Ostapchuk YO, Abdolla N, Tleulieva R, Krasnoshtanov VC, Belyaev NN. Exogenous Melatonin Up-Regulates Expression of CD62L by Lymphocytes in Aged Mice under Inflammatory and Non-Inflammatory Conditions. Immunol Invest 2019; 48:632-643. [PMID: 30887869 DOI: 10.1080/08820139.2019.1586918] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
It is well documented that age-related impaired functioning of immunocompetent cells is associated with an increase in the rates of chronic inflammatory diseases. Recently, an ability of melatonin to modulate inflammatory processes by regulating leucocyte recruitment has been demonstrated. However, to date, no studies have attempted to determine the impact of melatonin on the expression of CD62L by lymphocytes. CD62L, also known as L-selectin, is required for the entry of lymphocytes into secondary lymphoid organs, sites of tumor growth and chronic inflammation through high endothelial venules. Here, we investigated the effect of melatonin at physiological concentrations on the expression of CD62L by T and NK cells in vivo and in vitro. We demonstrated that NK and CD3+ T cells obtained from the spleen of aged mice were characterized by decreased expression of CD62L compared to young mice. Melatonin administration up-regulated the levels of surface CD62L on NK and T cell populations in aged mice under non-inflammatory conditions and on CD8+ T cells in aged mice with chronic inflammation. Pre-incubation with melatonin prevented the reduction in CD62L expression by CD8+ T cells induced by the co-cultivation of peripheral blood mononuclear cells with human pancreatic adenocarcinoma cell line (MiaPaCa-2). The obtained results suggest that melatonin can modulate lymphocyte homing into lymph nodes and sites of chronic inflammation and, therefore, can stimulate immune responses in chronic inflammatory conditions associated with aging.
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Affiliation(s)
- Yuliya V Perfilyeva
- a Laboratory of Molecular Immunology and Immunobiotechnology , M.A.Aitkhozhin's Institute of Molecular Biology and Biochemistry , Almaty , Kazakhstan
| | - Yekaterina O Ostapchuk
- a Laboratory of Molecular Immunology and Immunobiotechnology , M.A.Aitkhozhin's Institute of Molecular Biology and Biochemistry , Almaty , Kazakhstan
| | - Nurshat Abdolla
- a Laboratory of Molecular Immunology and Immunobiotechnology , M.A.Aitkhozhin's Institute of Molecular Biology and Biochemistry , Almaty , Kazakhstan
- b Department of Biophysics and Biomedicine , Al-Farabi Kazakh National University , Almaty , Kazakhstan
| | - Raikhan Tleulieva
- a Laboratory of Molecular Immunology and Immunobiotechnology , M.A.Aitkhozhin's Institute of Molecular Biology and Biochemistry , Almaty , Kazakhstan
| | | | - Nikolai N Belyaev
- d Department of New Technologies , Saint-Petersburg Pasteur Institute , Saint-Petersburg , Russia
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Masters AR, Jellison ER, Puddington L, Khanna KM, Haynes L. Attrition of T Cell Zone Fibroblastic Reticular Cell Number and Function in Aged Spleens. Immunohorizons 2018; 2:155-163. [PMID: 30706058 PMCID: PMC6350919 DOI: 10.4049/immunohorizons.1700062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Aging has a profound impact on multiple facets of the immune system, culminating in aberrant functionality. The architectural disorganization of splenic white pulp is a hallmark of the aging spleen, yet the factors underlying these structural changes are unclear. Fibroblastic reticular cells comprise one stromal cell subset in the spleen that is important for maintenance of architectural organization, yet it remains to be determined how aging impacts these cells. In this study, we sought to determine how aging impacts splenic T cell zone reticular cell (TRC) numbers, morphology, and function. Using a mouse model of aging, we found that aged naive spleens have fewer TRCs than young spleens. This reduction in TRC number correlated with reduced CCL19 and CCL21 concentrations in aged spleens, which may contribute to impaired homing of T cells. CCL21 in both young and aged spleens localized with TRCs. Aged TRCs extended marginally into B cell follicles and may contribute to the blending of the T cell zone and B cell follicles in aged spleens. The described age-related changes in TRCs number and function may be an underlying factor contributing to impaired immune system function with age.
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Affiliation(s)
- April R Masters
- Department of Immunology, UConn Health, Farmington, CT 06030.,Center on Aging, UConn Health, Farmington, CT 06030
| | - Evan R Jellison
- Department of Immunology, UConn Health, Farmington, CT 06030
| | - Lynn Puddington
- Department of Immunology, UConn Health, Farmington, CT 06030
| | - Kamal M Khanna
- Department of Immunology, UConn Health, Farmington, CT 06030.,Department of Microbiology, New York University, New York, NY 10003
| | - Laura Haynes
- Department of Immunology, UConn Health, Farmington, CT 06030.,Center on Aging, UConn Health, Farmington, CT 06030
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Bouamama S, Merzouk H, Medjdoub A, Merzouk-Saidi A, Merzouk SA. Effects of exogenous vitamins A, C, and E and NADH supplementation on proliferation, cytokines release, and cell redox status of lymphocytes from healthy aged subjects. Appl Physiol Nutr Metab 2017; 42:579-587. [PMID: 28177713 DOI: 10.1139/apnm-2016-0201] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Aging is an inevitable biological event that is associated with immune alterations. These alterations are related to increased cellular oxidative stress and micronutrient deficiency. Antioxidant supplementation could improve these age-related abnormalities. The aim of this study was to determine in vitro effects of vitamin A, vitamin C, vitamin E, and nicotinamide adenine dinucleotide (NADH) on T cell proliferation, cytokine release, and cell redox status in the elderly compared with young adults. Peripheral blood lymphocytes were isolated using a density gradient of Histopaque. They were cultured in vitro and stimulated with concanavalin A in the presence or absence of vitamins. Cell proliferation was determined by conducting MTT assays, and based on interleukin-2 and interleukin-4 secretions. Cell oxidant/antioxidant balance was assessed by assaying reduced glutathione (GSH), malondialdehyde, carbonyl protein levels, and catalase activity. The present study demonstrated that T-lymphocyte proliferation was decreased with aging and was associated with cytokine secretion alterations, GSH depletion, and intracellular oxidative stress. In the elderly, vitamin C, vitamin E, and NADH significantly improved lymphocyte proliferation and mitigated cellular oxidative stress, whereas vitamin A did not affect cell proliferation or cell redox status. In conclusion, vitamin C, vitamin E, and NADH supplementation improved T-lymphocytes response in the elderly, and could contribute to the prevention of age-related immune alterations. Consumption of food items containing these vitamins is recommended, and further investigation is necessary to evaluate the effect of vitamin supplementation in vivo.
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Affiliation(s)
- Samia Bouamama
- a Laboratory of Physiology, Physiopathology, and Biochemistry of Nutrition, Department of Biology, Faculty of Natural and Life Sciences, Earth and Universe, Abou-Bekr Belkaïd University, Tlemcen 13000, Algeria
| | - Hafida Merzouk
- a Laboratory of Physiology, Physiopathology, and Biochemistry of Nutrition, Department of Biology, Faculty of Natural and Life Sciences, Earth and Universe, Abou-Bekr Belkaïd University, Tlemcen 13000, Algeria
| | - Amel Medjdoub
- a Laboratory of Physiology, Physiopathology, and Biochemistry of Nutrition, Department of Biology, Faculty of Natural and Life Sciences, Earth and Universe, Abou-Bekr Belkaïd University, Tlemcen 13000, Algeria
| | - Amel Merzouk-Saidi
- a Laboratory of Physiology, Physiopathology, and Biochemistry of Nutrition, Department of Biology, Faculty of Natural and Life Sciences, Earth and Universe, Abou-Bekr Belkaïd University, Tlemcen 13000, Algeria
| | - Sid Ahmed Merzouk
- b Department of Technical Sciences, Faculty of Engineering, Abou-Bekr Belkaïd University, Tlemcen 13000, Algeria
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Immunosenescence in renal transplantation: a changing balance of innate and adaptive immunity. Curr Opin Organ Transplant 2015; 20:417-23. [PMID: 26154914 DOI: 10.1097/mot.0000000000000210] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW With global demographic changes and an overall improved healthcare, more older end-stage renal disease (ESRD) patients receive kidney transplants. At the same time, organs from older donors are utilized more frequently. Those developments have and will continue to impact allocation, immunosuppression and efforts improving organ quality. RECENT FINDINGS Findings mainly outside the field of transplantation have provided insights into mechanisms that drive immunosenescence and immunogenicity, thus providing a rationale for an age-adapted immunosuppression and relevant clinical trials in the elderly. With fewer rejections in the elderly, alloimmune responses appear to be characterized by a decline in effectiveness and an augmented unspecific immune response. SUMMARY Immunosenescence displays broad and ambivalent effects in elderly transplant recipients. Those changes appear to compensate a decline in allospecific effectiveness by a shift towards an augmented unspecific immune response. Immunosuppression needs to target those age-specific changes to optimize outcomes in elderly transplant recipients.
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