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Li A, Wei X, Xie Y, Ren Y, Zhu X, Liu M, Liu S. Light exposure and its applications in human health. JOURNAL OF BIOPHOTONICS 2024; 17:e202400023. [PMID: 38576140 DOI: 10.1002/jbio.202400023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
Light exposure has been proven to have a significant impact on human health. As a result, researchers are increasingly exploring its potential benefits and drawbacks. With advancements in understanding light and the manufacturing of light sources, modern health lighting has become widely utilized in daily life and plays a critical role in the prevention and treatment of various illnesses. The use of light in healthcare is a global trend, with many countries actively promoting the development and application of relevant scientific research and medical technology. This field has gained worldwide attention and support from scientists and doctors alike. In this review, we examine the application of lighting in human health and recent breakthroughs in light exposure related to pathology, therapeutic strategies, molecular changes, and more. Finally, we also discuss potential future developments and areas of application.
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Affiliation(s)
- Angze Li
- School of Information Science and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, Guangdong Province, China
| | - Xiaoling Wei
- Department of Endodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Yajia Xie
- Department of Endodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
| | - Yi Ren
- School of Information Science and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, Guangdong Province, China
| | - Xi Zhu
- Zhongshan Fudan Joint Innovation Center, Zhongshan, Guangdong Province, China
| | - Muqing Liu
- School of Information Science and Technology, Fudan University, Shanghai, China
- Zhongshan Fudan Joint Innovation Center, Zhongshan, Guangdong Province, China
| | - Shangfeng Liu
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, China
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Gowripriya T, Yashwanth R, James Prabhanand B, Suresh R, Balamurugan K. Klebsiella aerogenes ingestion elicits behavioral changes and innate immunity in the host, Caenorhabditis elegans. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 154:105138. [PMID: 38286197 DOI: 10.1016/j.dci.2024.105138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 01/31/2024]
Abstract
Klebsiella aerogenes (previously known as Enterobacter aerogenes) is a common opportunistic pathogen that infect the respiratory tract and central nervous system. However, how it interferes the host regulatory mechanism has not been previously described. When C. elegans were exposed to K. aerogenes, they exhibited a shorter lifespan compared to those fed with E. coli OP50. The time required for 50 % of L4 hermaphrodite nematodes to die when exposed to K. aerogenes was approximately 9 days, whereas it was about 18 days when fed with E. coli OP50. The interaction with K. aerogenes also affected the physical activity of C. elegans. Parameters like pharyngeal pumping, head thrashing, body bending, and swimming showed a gradual decline during infection. The expression of serotonin-mediated axon regeneration K. aerogenes infection led to increased levels of reactive oxygen species (ROS) in C. elegans compared to E. coli OP50-fed worms. The nematodes activated antioxidant mechanisms, including the expression of SODs, to counteract elevated ROS levels. The interaction with K. aerogenes activated immune regulatory pathways in C. elegans, including the mTOR signaling pathway downstream player SGK-1. Lifespan regulatory pathways, such as pha-4 and pmk-1, were also affected, likely contributing to the nematode ability to survive in a pathogenic environment. K. aerogenes infection has a detrimental impact on the healthspan and lifespan of C. elegans, affecting physical activity, intestinal health, serotonin regulation, ROS levels, and immune responses. These findings provide insights into the complex interactions between K. aerogenes and host organisms.
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Affiliation(s)
- Thirumugam Gowripriya
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, 630 003, India.
| | - Radhakrishnan Yashwanth
- ITC Life Sciences and Technology Centre, Peenya Industrial Area, Bangalore, 560 058, Karnataka, India.
| | - Bhaskar James Prabhanand
- ITC Life Sciences and Technology Centre, Peenya Industrial Area, Bangalore, 560 058, Karnataka, India.
| | - Ramamurthi Suresh
- ITC Life Sciences and Technology Centre, Peenya Industrial Area, Bangalore, 560 058, Karnataka, India.
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Jee Lee H, Vallier J, Lu H. Microfluidic Localized Hydrogel Polymerization Enables Simultaneous Recording of Neural Activity and Behavior in C. elegans. REACT CHEM ENG 2024; 9:666-676. [PMID: 38680986 PMCID: PMC11046317 DOI: 10.1039/d3re00516j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Monitoring an animal's brain activity during motion provides a means to interpret the brain activity in the context of movement. However, it is challenging to obtain information about the animal's movement during neural imaging in the popular model organism C. elegans due to its small size. Here, we present a microfluidic tool to immobilize only the head region of C. elegans for simultaneous recording of neuronal activity and tail movement. We combine hydrogel photopolymerization and microfluidics to realize controlled head immobilization in a semi-continuous fashion. To optimize the immobilization process, we characterize the hydrogel polymerization under different experimental conditions, including under the effect of fluid flow. We show that the Damköhler number specifically defined for our reactive transport phenomena can predict the success of such photopolymerized hydrogels used for sample immobilization. In addition to simultaneous recording of neural activity and behavior in C. elegans, we demonstrate our method's capability to temporarily reconfigure fluid flow and deliver chemical stimuli to the animal's nose to examine the animal's responses. We envision this approach to be useful for similar recordings for other small motile organisms, as well as scenarios where microfluidics and polymerization are used to control flow and rection.
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Affiliation(s)
- Hyun Jee Lee
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, USA
| | - Julia Vallier
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, USA
| | - Hang Lu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, USA
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VenkataKrishna LM, Balasubramaniam B, Sushmitha TJ, Ravichandiran V, Balamurugan K. Cronobacter sakazakii infection implicates multifaceted neuro-immune regulatory pathways of Caenorhabditis elegans. Mol Omics 2024; 20:48-63. [PMID: 37818754 DOI: 10.1039/d3mo00167a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The neural pathways of Caenorhabditis elegans play a crucial role in regulating host immunity and inflammation during pathogenic infections. To understand the major neuro-immune signaling pathways, this study aimed to identify the key regulatory proteins in the host C. elegans during C. sakazakii infection. We used high-throughput label-free quantitative proteomics and identified 69 differentially expressed proteins. KEGG analysis revealed that C. sakazakii elicited host immune signaling cascades primarily including mTOR signaling, axon regeneration, metabolic pathways (let-363 and acox-1.4), calcium signaling (mlck-1), and longevity regulating pathways (ddl-2), respectively. The abrogation in functional loss of mTOR-associated players deciphered that C. sakazakii infection negatively regulated the lifespan of mutant worms (akt-1, let-363 and dlk-1), including physiological aberrations, such as reduced pharyngeal pumping and egg production. Additionally, the candidate pathway proteins were validated by transcriptional profiling of their corresponding genes. Furthermore, immunoblotting showed the downregulation of mTORC2/SGK-1 during the later hours of pathogen exposure. Overall, our findings profoundly provide an understanding of the specificity of proteome imbalance in affecting neuro-immune regulations during C. sakazakii infection.
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Affiliation(s)
| | | | - T J Sushmitha
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, Tamil Nadu, India.
| | - V Ravichandiran
- National Institute of Pharmaceutical Education and Research, Kolkata, West Bengal, India
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Cui H, Feng C, Guo C, Bu X, Li X, Zhang T, Cheng S, Duan Z. Research on the anti-aging efficacy of fermented lysate VHProbi® MixA as the functional skincare ingredient. J Appl Microbiol 2024; 135:lxad274. [PMID: 37977853 DOI: 10.1093/jambio/lxad274] [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: 07/31/2023] [Revised: 09/25/2023] [Accepted: 11/16/2023] [Indexed: 11/19/2023]
Abstract
AIMS This study aimed to investigate the efficacy of a cream containing VHProbi® MixA for improving skin aging. METHODS AND RESULTS In vitro studies demonstrated that the lysate produced from Lacticaseibacillus paracasei E12 (E12) exhibited immunoregulatory effects in a 3D skin model, with significant reductions in levels of interleukin (IL)-1α, IL-1β, and IL-8 (P < 0.05) compared with the control group. In addition, the lysate of E12 mitigated the hydrogen peroxide-induced mortality of 3D skin cells and enhanced the transepithelial electrical resistance to show significant differences in comparison with control (P < 0.05), suggesting favorable antioxidant effects. The antioxidant capacity of the lysate of E12 was also confirmed using the Caenorhabditis elegans N2 model. C. elegans N2 fed the E12 strain showed a significantly higher % survival than those fed Escherichia coli OP50 (P < 0.05). Subsequently, VHProbi® MixA was formulated using the fermented lysates of E12, Lactiplantibacillus plantarum E15, and Limosilactobacillus reuteri E18. In a clinical study to ascertain if a cream containing VHProbi® MixA could improve the skin aging trends, participants were asked to use the investigational products for 60 days, and six indicators, transepidermal water loss (TEWL), hydration, elasticity, wrinkles, skin texture (roughness), and pores were measured at baseline and the endpoint of the study. A self-evaluation questionnaire analysis was also provided. TEWL, wrinkles, skin texture, and thickness of pores decreased significantly after treatment with the cream for 60 days (P < 0.01), whereas hydration and elasticity increased significantly (P < 0.01), in comparison to the baseline measurements. CONCLUSIONS We hypothesize that the use of the cream containing VHProbi® MixA could be favorable for skin anti-aging management.
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Affiliation(s)
- Hongchang Cui
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Congrui Feng
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Chaoqun Guo
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Xinping Bu
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Xinping Li
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Tao Zhang
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Sidao Cheng
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
| | - Zhi Duan
- Qingdao Vland Biotech Group Co., Ltd., Laoshan District, Qingdao 266102, China
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Smith JJ, Kenny IW, Wolff C, Cray R, Kumar A, Sherwood DR, Matus DQ. A light sheet fluorescence microscopy protocol for Caenorhabditis elegans larvae and adults. Front Cell Dev Biol 2022; 10:1012820. [PMID: 36274853 PMCID: PMC9586288 DOI: 10.3389/fcell.2022.1012820] [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: 08/05/2022] [Accepted: 09/20/2022] [Indexed: 01/07/2023] Open
Abstract
Light sheet fluorescence microscopy (LSFM) has become a method of choice for live imaging because of its fast acquisition and reduced photobleaching and phototoxicity. Despite the strengths and growing availability of LSFM systems, no generalized LSFM mounting protocol has been adapted for live imaging of post-embryonic stages of C. elegans. A major challenge has been to develop methods to limit animal movement using a mounting media that matches the refractive index of the optical system. Here, we describe a simple mounting and immobilization protocol using a refractive-index matched UV-curable hydrogel within fluorinated ethylene propylene (FEP) tubes for efficient and reliable imaging of larval and adult C. elegans stages.
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Affiliation(s)
- Jayson J. Smith
- Department of Neurobiology, University of Chicago, Chicago, IL, United States,University of Chicago Neuroscience Institute, Chicago, IL, United States,Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States
| | - Isabel W. Kenny
- Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States,Department of Biology, Duke University, Durham, NC, United States
| | - Carsten Wolff
- Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States,Marine Biological Laboratory, Woods Hole, MA, United States
| | - Rachel Cray
- Marine Biological Laboratory, Woods Hole, MA, United States
| | - Abhishek Kumar
- Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States,Marine Biological Laboratory, Woods Hole, MA, United States
| | - David R. Sherwood
- Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States,Department of Biology, Duke University, Durham, NC, United States,*Correspondence: David R. Sherwood, ; David Q. Matus,
| | - David Q. Matus
- Embryology: Modern Concepts and Techniques, Marine Biological Laboratory, Woods Hole, MA, United States,Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, NY, United States,*Correspondence: David R. Sherwood, ; David Q. Matus,
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HydroZitLa inhibits calcium oxalate stone formation in nephrolithic rats and promotes longevity in nematode Caenorhabditis elegans. Sci Rep 2022; 12:5102. [PMID: 35332173 PMCID: PMC8948263 DOI: 10.1038/s41598-022-08316-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 02/22/2022] [Indexed: 11/24/2022] Open
Abstract
Low fluid intake, low urinary citrate excretion, and high oxidative stress are main causative factors of calcium oxalate (CaOx) nephrolithiasis. HydroZitLa contains citrate and natural antioxidants and is developed to correct these three factors simultaneously. Antioxidants theoretically can prolong the lifespan of organisms. In this study, we preclinically investigated the antilithogenic, lifespan-extending and anti-aging effects of HydroZitLa in HK-2 cells, male Wistar rats, and Caenorhabditis elegans. HydroZitLa significantly inhibited CaOx crystal aggregation in vitro and reduced oxidative stress in HK-2 cells challenged with lithogenic factors. For experimental nephrolithiasis, rats were divided into four groups: ethylene glycol (EG), EG + HydroZitLa, EG + Uralyt-U, and untreated control. CaOx deposits in kidneys of EG + HydroZitLa and EG + Uralyt-U rats were significantly lower than those of EG rats. Intrarenal expression of 4-hydroxynonenal in EG + HydroZitLa rats was significantly lower than that of EG rats. The urinary oxalate levels of EG + HydroZitLa and EG + Uralyt-U rats were significantly lower than those of EG rats. The urinary citrate levels of EG + HydroZitLa and EG + Uralyt-U rats were restored to the level in normal control rats. In C. elegans, HydroZitLa supplementation significantly extended the median lifespan of nematodes up to 34% without altering feeding ability. Lipofuscin accumulation in HydroZitLa-supplemented nematodes was significantly lower than that of non-supplemented control. Additionally, HydroZitLa inhibited telomere shortening, p16 upregulation, and premature senescence in HK-2 cells exposed to lithogenic stressors. Conclusions, HydroZitLa inhibited oxidative stress and CaOx formation both in vitro and in vivo. HydroZitLa extended the lifespan and delayed the onset of aging in C. elegans and human kidney cells. This preclinical evidence suggests that HydroZitLa is beneficial for inhibiting CaOx stone formation, promoting longevity, and slowing down aging.
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Muthubharathi BC, Balasubramaniam B, Mir DA, Ravichandiran V, Balamurugan K. Physiological and Metabolite Alterations Associated with Neuronal Signals of Caenorhabditis elegans during Cronobacter sakazakii Infections. ACS Chem Neurosci 2021; 12:4336-4349. [PMID: 34704733 DOI: 10.1021/acschemneuro.1c00559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Metabolomic reprogramming plays a crucial role in the activation of several regulatory mechanisms including neuronal responses of the host. In the present study, alterations at physiological and biochemical levels were initially assessed to monitor the impact of the candidate pathogen Cronobacter sakazakii on the nematode host Caenorhabditis elegans. The abnormal behavioral responses were observed in infected worms in terms of hyperosmolarity and high viscous chemicals. The microscopic observations indicated reduction in egg laying and internal hatching of larvae in the host. An increased level of total reactive oxygen species and reduction in antioxidant agents such as glutathione and catalase were observed. These observations suggested the severe effect of C. sakazakii infection on C. elegans. To understand the small molecules which likely mediated neurotransmission, the whole metabolome of C. elegans during the infection of C. sakazakii was analyzed using liquid chromatography-mass spectrometry. A decrease in the quantity of methyl dopamine and palmitoyl dopamine and an increase in hydroxyl dopamine suggested that reduction in dopamine reuptake and dopamine neuronal stress. The disordered dopaminergic transmission during infection was confirmed using transgenic C. elegans by microscopic observation of Dat-1 protein expression. In addition, reduction in arachidonic acid and short-chain fatty acids revealed their effect on lipid droplet formation as well as neuronal damage. An increase in the quantity of stearoyl CoA underpinned the higher accumulation of lipid droplets in the host. On the other hand, an increased level of metabolites such as palmitoyl serotonin, citalopram N-oxide, and N-acyl palmitoyl serotonin revealed serotonin-mediated potential response for neuroprotection, cytotoxicity, and cellular damage. Based on the metabolomic data, the genes correspond to small molecules involved in biosynthesis and transportation of candidate neurotransmitters were validated through relative gene expression.
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Affiliation(s)
| | | | - Dilawar Ahmad Mir
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, India
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Tonsomboon A, Prasanth MI, Plaingam W, Tencomnao T. Kaempferia parviflora Rhizome Extract Inhibits Glutamate-Induced Toxicity in HT-22 Mouse Hippocampal Neuronal Cells and Extends Longevity in Caenorhabditis elegans. BIOLOGY 2021; 10:264. [PMID: 33810282 PMCID: PMC8066628 DOI: 10.3390/biology10040264] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 12/26/2022]
Abstract
Kaempferia parviflora Wall. ex Baker (KP) or "Kra-chai-dam" has been shown to exhibit several pharmacological effects including anti-inflammation, antimicrobial, and sexual-enhancing activity. The objectives of this study included an investigation of the effect of KP rhizome extract against glutamate-induced toxicity in mouse hippocampal HT-22 neuronal cells, determination of the underlying mechanism of neuroprotection, and an evaluation of the effect of KP extract on the longevity of Caenorhabditis elegans. HT-22 cells were co-treated with glutamate (5 mM) and KP extract (25, 50, and 75 μg/mL) for 14 h. Cell viability, intracellular reactive oxygen species (ROS) assay, fluorescence-activated cell sorting (FACS) analysis, and Western blotting were performed. The longevity effect of KP extract on C. elegans was studied by lifespan measurement. In HT-22 cells, co-treatment of glutamate with KP extract significantly inhibited glutamate-mediated cytotoxicity and decreased intracellular ROS production. Additionally, the glutamate-induced apoptosis and apoptotic-inducing factor (AIF) translocation were blocked by KP extract co-treatment. Western blot analysis also demonstrated that KP extract significantly diminished extracellular signal-regulated kinase (ERK) phosphorylation induced by glutamate, and brain-derived neurotrophic factor (BDNF) was recovered to the control. Moreover, this KP extract treatment prolonged the lifespan of C. elegans. Altogether, this study suggested that KP extract possesses both neuroprotective and longevity-inducing properties, thus serving as a promising candidate for development of innovative health products.
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Affiliation(s)
- Aunchalee Tonsomboon
- Interdisciplinary Program of Biomedical Sciences, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Mani Iyer Prasanth
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand;
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Waluga Plaingam
- College of Oriental Medicine, Rangsit University, 52/347 Muang Ake, Paholyothin Road, Lakhok, Pathum Thani 12000, Thailand;
| | - Tewin Tencomnao
- Natural Products for Neuroprotection and Anti-Ageing Research Unit, Chulalongkorn University, Bangkok 10330, Thailand;
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Lee HJ, Lee SH, Lee JH, Kim Y, Seong KM, Jin YW, Min KJ. Role of Commensal Microbes in the γ-Ray Irradiation-Induced Physiological Changes in Drosophila melanogaster. Microorganisms 2020; 9:microorganisms9010031. [PMID: 33374132 PMCID: PMC7824294 DOI: 10.3390/microorganisms9010031] [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: 11/05/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 12/29/2022] Open
Abstract
Ionizing radiation induces biological/physiological changes and affects commensal microbes, but few studies have examined the relationship between the physiological changes induced by irradiation and commensal microbes. This study investigated the role of commensal microbes in the γ-ray irradiation-induced physiological changes in Drosophila melanogaster. The bacterial load was increased in 5 Gy irradiated flies, but irradiation decreased the number of operational taxonomic units. The mean lifespan of conventional flies showed no significant change by irradiation, whereas that of axenic flies was negatively correlated with the radiation dose. γ-Ray irradiation did not change the average number of eggs in both conventional and axenic flies. Locomotion of conventional flies was decreased after 5 Gy radiation exposure, whereas no significant change in locomotion activity was detected in axenic flies after irradiation. γ-Ray irradiation increased the generation of reactive oxygen species in both conventional and axenic flies, but the increase was higher in axenic flies. Similarly, the amounts of mitochondria were increased in irradiated axenic flies but not in conventional flies. These results suggest that axenic flies are more sensitive in their mitochondrial responses to radiation than conventional flies, and increased sensitivity leads to a reduced lifespan and other physiological changes in axenic flies.
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Affiliation(s)
- Hwa-Jin Lee
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (H.-J.L.); (S.-H.L.); (J.-H.L.)
| | - Shin-Hae Lee
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (H.-J.L.); (S.-H.L.); (J.-H.L.)
| | - Ji-Hyeon Lee
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (H.-J.L.); (S.-H.L.); (J.-H.L.)
| | - Yongjoong Kim
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Korea; (Y.K.); (K.M.S.); (Y.W.J.)
| | - Ki Moon Seong
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Korea; (Y.K.); (K.M.S.); (Y.W.J.)
| | - Young Woo Jin
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul 01812, Korea; (Y.K.); (K.M.S.); (Y.W.J.)
| | - Kyung-Jin Min
- Department of Biological Sciences, Inha University, Incheon 22212, Korea; (H.-J.L.); (S.-H.L.); (J.-H.L.)
- Correspondence:
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Rivard RS, Morris JM, Youngman MJ. The PP2A/4/6 subfamily of phosphoprotein phosphatases regulates DAF-16 and confers resistance to environmental stress in postreproductive adult C. elegans. PLoS One 2020; 15:e0229812. [PMID: 33315870 PMCID: PMC7735605 DOI: 10.1371/journal.pone.0229812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 11/13/2020] [Indexed: 11/28/2022] Open
Abstract
Insulin and insulin-like growth factors are longevity determinants that negatively regulate Forkhead box class O (FoxO) transcription factors. In C. elegans mutations that constitutively activate DAF-16, the ortholog of mammalian FoxO3a, extend lifespan by two-fold. While environmental insults induce DAF-16 activity in younger animals, it also becomes activated in an age-dependent manner in the absence of stress, modulating gene expression well into late adulthood. The mechanism by which DAF-16 activity is regulated during aging has not been defined. Since phosphorylation of DAF-16 generally leads to its inhibition, we asked whether phosphatases might be necessary for its increased transcriptional activity in adult C. elegans. We focused on the PP2A/4/6 subfamily of phosphoprotein phosphatases, members of which had been implicated to regulate DAF-16 under low insulin signaling conditions but had not been investigated during aging in wildtype animals. Using reverse genetics, we functionally characterized all C. elegans orthologs of human catalytic, regulatory, and scaffolding subunits of PP2A/4/6 holoenzymes in postreproductive adults. We found that PP2A complex constituents PAA-1 and PPTR-1 regulate DAF-16 transcriptional activity during aging and that they cooperate with the catalytic subunit LET-92 to protect adult animals from ultraviolet radiation. PP4 complex members PPH-4.1/4.2, and SMK-1 also appear to regulate DAF-16 in an age-dependent manner, and together with PPFR-2 they contribute to innate immunity. Interestingly, SUR-6 but no other subunit of the PP2A complex was necessary for the survival of pathogen-infected animals. Finally, we found that PP6 complex constituents PPH-6 and SAPS-1 contribute to host defense during aging, apparently without affecting DAF-16 transcriptional activity. Our studies indicate that a set of PP2A/4/6 complexes protect adult C. elegans from environmental stress, thus preserving healthspan. Therefore, along with their functions in cell division and development, the PP2A/4/6 phosphatases also appear to play critical roles later in life.
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Affiliation(s)
- Rebecca S. Rivard
- Department of Biology, Villanova University, Villanova, PA, United States of America
| | - Julia M. Morris
- Department of Biology, Villanova University, Villanova, PA, United States of America
| | - Matthew J. Youngman
- Department of Biology, Villanova University, Villanova, PA, United States of America
- * E-mail:
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Pandurangan S, Murugesan P, Ramudu KN, Krishnaswamy B, Ayyadurai N. Enhanced Cellular Uptake and Sustained Transdermal Delivery of Collagen for Skin Regeneration. ACS APPLIED BIO MATERIALS 2020; 3:7540-7549. [PMID: 35019495 DOI: 10.1021/acsabm.0c00755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The present study reports a method for transporting high molecular weight collagen for skin regeneration. An independent engineered enzymatic vehicle that has the ability for efficient transdermal delivery of regenerative biomaterial was developed for tissue regeneration. Collagen has been well recognized as a skin regeneration molecule due to its interaction with the extracellular matrix to stimulate skin cell growth, proliferation, and differentiation. However, the transdermal delivery of collagen poses a significant challenge due to its high molecular weight as well as a lack of efficient approaches. Here, to improve the transdermal delivery efficiency, α-1,4-glycosidic hydrolase was engineered with genetically encoded 3,4-dihydroxy-L-phenylalanine, which enhanced its biological activity as revealed by microscale thermophoresis. The remodeled catalytic pocket resulted in enhanced substrate binding activity of the enzyme with a predominant glycosaminoglycan (chondroitin sulfate) present in the extracellular matrix of the skin. The engineered enzyme rapidly opened up the skin extracellular matrix fiber (15 min) to ferry collagen across the wall, without disturbing the cellular bundle architecture. Confocal microscopy indicated that macromolecules had diffused three times deeper into the engineered enzyme-treated skin than the native enzyme-treated skin. Gene expression, histopathology, and hematology analysis also supported the penetration of macromolecules. Cytotoxicity (mammalian cell culture) and in vivo (Caenorhabditis elegans and Rattus noryegicus) studies revealed that the congener enzyme could potentially be used as a penetration enhancer, which is of paramount importance for the multimillion cosmetic industries. Hence, it offers promise as a pharmaceutical enzyme for transdermal delivery bioenhancement and dermatological applications.
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Affiliation(s)
- Suryalakshmi Pandurangan
- Division of Biochemistry and Biotechnology Council of Scientific and Industrial Research, Central Leather Research Institute, Chennai 600 020, India.,Academy of Scientific and Innovative Research Central Leather Research Institute Campus, Chennai 600 020, India
| | | | - Kamini Numbi Ramudu
- Division of Biochemistry and Biotechnology Council of Scientific and Industrial Research, Central Leather Research Institute, Chennai 600 020, India.,Academy of Scientific and Innovative Research Central Leather Research Institute Campus, Chennai 600 020, India
| | | | - Niraikulam Ayyadurai
- Division of Biochemistry and Biotechnology Council of Scientific and Industrial Research, Central Leather Research Institute, Chennai 600 020, India.,Academy of Scientific and Innovative Research Central Leather Research Institute Campus, Chennai 600 020, India
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Malar DS, Prasanth MI, Jeyakumar M, Balamurugan K, Devi KP. Vitexin prevents Aβ proteotoxicity in transgenic Caenorhabditis elegans model of Alzheimer's disease by modulating unfolded protein response. J Biochem Mol Toxicol 2020; 35:e22632. [PMID: 32926499 DOI: 10.1002/jbt.22632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 07/17/2020] [Accepted: 09/02/2020] [Indexed: 01/01/2023]
Abstract
Alzheimer's disease (AD) accounts for an estimated 60% to 80% of all dementia cases. The present study is aimed at evaluating the neuroprotective efficacy of vitexin, an apigenin flavone glycoside using transgenic Caenorhabditis elegans strain (CL2006) of AD. The neuroprotective effect of vitexin was determined using physiological assays, quantitative polymerase chain reaction, and Western blotting. The results of survival and paralysis assay indicate that vitexin (200 μM) significantly extended the lifespan of the nematodes. Vitexin-treated nematodes showed a significant reduction in the expression of Aβ, ace-1, and ace-2 genes when compared to control. Further, vitexin significantly upregulated the expression of acr-8 and dnj-14, and increased the lifespan of the nematodes. Vitexin was also found to modulate the unfolded protein response genes (hsp-4, pek-1, ire-1, and xbp-1) and suppress the expression of Aβ. Overall, the results show that vitexin acts as a neuroprotective agent and protects transgenic C. elegans strains from Aβ proteotoxicity.
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Affiliation(s)
- Dicson Sheeja Malar
- Department of Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, India
| | - Mani Iyer Prasanth
- Department of Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, India
| | | | | | - Kasi Pandima Devi
- Department of Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, India
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Kavita S, Pooranachithra M, Singh N, Prasanth MI, Balamurugan K, Goel G. Lactobacillus gastricus BTM 7 prevents intestinal colonization by biofilm forming Cronobacter sakazakii in Caenorhabditis elegans model host. Antonie van Leeuwenhoek 2020; 113:1587-1600. [PMID: 32918643 DOI: 10.1007/s10482-020-01466-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 08/19/2020] [Indexed: 12/20/2022]
Abstract
The study reports protective role of potential probiotic cultures against infection by biofilm forming Cronobacter sakazakii in Caenorhabditis elegans model system. Among the fifteen indigenous potential probiotics, the cell free supernatant of Lactobacillus gastricus BTM7 possessed highest antimicrobial action and biofilm inhibition against C. sakazakii. The competitive exclusion assays revealed that preconditioning with probiotics resulted in increased mean life span of the nematode to 12-13 days as compared to 5-6 days when the pathogen was administered alone. Enhanced expression of the marker genes (pmk-1, daf-16 and skn-1) was observed during the administration of probiotic cultures. The highest expression of pmk-1 (2.5 folds) was observed with administration of L. gastricus BTM7. The principal component analysis on selected variables revealed that L. gastricus BTM7 has the potential to limit the infection of C. sakazakii in C. elegans and enhance the expression of key genes involved in extending life span of the worm.
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Affiliation(s)
- Sharma Kavita
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, 173234, India
| | | | - Niharika Singh
- Department of Biotechnology, Faculty of Engineering and Technology, Rama University, Mandhana, Kanpur, 209217, India
| | - Mani Iyer Prasanth
- Department of Biotechnology, Alagappa University, Karaikudi, 630004, India.,Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand
| | | | - Gunjan Goel
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, 173234, India. .,Department of Microbiology, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh, 123031, India.
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Noiphung J, Prasanth MI, Tencomnao T, Laiwattanapaisal W. Paper-Based Analytical Device for Real-Time Monitoring of Egg Hatching in the Model Nematode Caenorhabditis elegans. ACS Sens 2020; 5:1750-1757. [PMID: 32452668 DOI: 10.1021/acssensors.0c00412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Caenorhabditis elegans is an in vivo model known for its easy handling and maintenance and lack of associated ethical issues. The release of chitinase can be used to monitor the egg-laying stage in C. elegans. The aim of this study was to develop a simple and cost-effective device to monitor the activity of chitinase in embryos of C. elegans. Colloid chitin azure (CCA), a substrate for chitinase, was preimmobilized on the detection area of paper, forming a purple region, to generate a CCA paper-based analytical device (CCA-PAD). The degradation of CCA by chitinase could be observed as the purple color became faint and the filter paper eventually became colorless. Under the optimum conditions, the proposed device quantified the chitinase enzyme in the range of 15.625-125 mU/mL within 48 h (R2 = 0.993). In this work, 10 young adult-staged wild-type C. elegans (Bristol N2) worms were analyzed on the CCA-PAD, which was supplemented with the laboratory food source E. coli OP50 on a gauze layer. The same strain treated with 5-fluoro-2'-deoxyuridine was used to prevent egg production in C. elegans. A significant difference in the color intensity was observed between these two groups at the end of the experiment (P = <0.001, independent t-test, n = 3). We successfully developed a simple and effective method for monitoring chitinase activity. The device may have potential applications in drug-screening studies as it efficiently distinguishes drugs that can impact egg laying.
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Affiliation(s)
- Julaluk Noiphung
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Biosensors and Bioanalytical Technology for Cells and Innovative Testing Device Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Mani Iyer Prasanth
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Wanida Laiwattanapaisal
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Biosensors and Bioanalytical Technology for Cells and Innovative Testing Device Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Understanding the role of p38 and JNK mediated MAPK pathway in response to UV-A induced photoaging in Caenorhabditis elegans. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111844. [PMID: 32172136 DOI: 10.1016/j.jphotobiol.2020.111844] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 02/09/2020] [Accepted: 03/02/2020] [Indexed: 11/20/2022]
Abstract
Premature aging of the skin, principally induced by the UV radiations is called as photoaging, characterized by an increase in the level of ROS and the damage of the collagen layer leading to the damage of the cells. Mitogen activated Protein kinase (MAPK) pathway is known to mediate photoaging by controlling the level of ROS and initiating detoxification. Caenorhabditis elegans, a known model to analyze photoaging was used to understand the role of MAPK pathway (p38 and JNK) during UV-A mediated photoaging. Gene specific mutants of p38 MAPK pathway showed reduced survival when exposed to UV-A suggesting that UV-A mediated photoaging was dependent on this pathway. Also, the role of SKN-1 in eliciting response against UV-A was analyzed with the help of GFP tagged strains and qPCR analysis. Further, UV-A did not have any impact on the lifespan of JNK pathway mutants suggesting the importance of the pathway in eliciting a response against UV-A exposure, which was further validated by Western blot analysis. Overall, this study suggests that MAPK pathway could play an important part in initiating and eliciting a response by the host against UV-A exposure, by which it could be used as a marker to analyze the effects of photoaging.
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Antiaging, Stress Resistance, and Neuroprotective Efficacies of Cleistocalyx nervosum var. paniala Fruit Extracts Using Caenorhabditis elegans Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7024785. [PMID: 31871554 PMCID: PMC6906846 DOI: 10.1155/2019/7024785] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 09/02/2019] [Accepted: 09/10/2019] [Indexed: 12/11/2022]
Abstract
Plant parts and their bioactive compounds are widely used by mankind for their health benefits. Cleistocalyx nervosum var. paniala is one berry fruit, native to Thailand, known to exhibit various health benefits in vitro. The present study was focused on analyzing the antiaging, stress resistance, and neuroprotective effects of C. nervosum in model system Caenorhabditis elegans using physiological assays, fluorescent imaging, and qPCR analysis. The results suggest that the fruit extract was able to significantly extend the median and maximum lifespan of the nematode. It could also extend the healthspan by reducing the accumulation of the “age pigment” lipofuscin, inside the nematode along with regulating the expression of col-19, egl-8, egl-30, dgk-1, and goa-1 genes. Further, the extracts upregulated the expression of daf-16 while downregulating the expression of daf-2 and age-1 in wild-type nematodes. Interestingly, it could extend the lifespan in DAF-16 mutants suggesting that the extension of lifespan and healthspan was dependent and independent of DAF-16-mediated pathway. The fruit extract was also observed to reduce the level of Reactive Oxygen Species (ROS) inside the nematode during oxidative stress. The qPCR analysis suggests the involvement of skn-1 and sir-2.1 in initiating stress resistance by activating the antioxidant mechanism. Additionally, the fruit could also elicit neuroprotection as it could extend the median and maximum lifespan of transgenic strain integrated with Aβ. SKN-1 could play a pivotal role in establishing the antiaging, stress resistance, and neuroprotective effect of C. nervosum. Overall, C. nervosum can be used as a nutraceutical in the food industry which could offer potential health benefits.
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Alexpandi R, Prasanth MI, Ravi AV, Balamurugan K, Durgadevi R, Srinivasan R, De Mesquita JF, Pandian SK. Protective effect of neglected plant Diplocyclos palmatus on quorum sensing mediated infection of Serratia marcescens and UV-A induced photoaging in model Caenorhabditis elegans. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 201:111637. [PMID: 31706086 DOI: 10.1016/j.jphotobiol.2019.111637] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 08/22/2019] [Accepted: 09/22/2019] [Indexed: 02/07/2023]
Abstract
Plants are considered to be a leading source for possible human therapeutic agents. This holistic study has investigated the anti-quorum sensing (anti-QS), anti-infection, antioxidant and anti-photoaging properties of neglected plant Diplocyclos palmatus. The results showed that D. palmatus methanolic leaf extract (DPME) effectively inhibited the quorum sensing (QS) regulated virulence factor production as well as biofilm formation in Serratia marcescens. The transcriptomic analysis revealed that DPME significantly downed the expression of QS-regulated genes such as fimA, fimC, flhC, bsmB, pigP and shlA in S. marcescens, which supports the outcome of in vitro bioassays. Further, the docking study revealed that the presence of active compounds, namely tocopherols and phytol, DPME exhibited its anti-QS activity against S. marcescens. In addition, DPME treatment extended the lifespan of S. marcescens infected C. elegans by the action of dropping the internal accumulation. Further, qPCR analysis clearly revealed that DPME treatment significantly up-regulated the expression of the lifespan-related gene (daf-16) and immune-related genes (clec-60, clec-87, lys-7 and bec-1) in S. marcescens infected C.elegans. On the other hand, DPME extensively reduced the UV-A induced ROS stress, thereby, extended the lifespan in UV-A photoaged C. elegans. Further, the qPCR analysis also confirmed the up-regulation of daf-16, clec-60, clec-87 and col-19 genes which advocated the improvement of the lifespan, healthspan and collagen production in UV-A photoaged C. elegans. Further bioassays evidenced that that the lifespan extension of photoaged C. elegans was accomplished by the actions of antioxidants such as tocopherols and phytol in DPME.
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Affiliation(s)
- Rajaiah Alexpandi
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India
| | - Mani Iyer Prasanth
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India; Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Arumugam Veera Ravi
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India.
| | - Krishnaswamy Balamurugan
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India
| | - Ravindran Durgadevi
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India
| | - Ramanathan Srinivasan
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India; Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350 002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Province University, Fuzhou 350 002, PR China
| | - Joelma Freire De Mesquita
- Department of Genetics and Molecular Biology, Federal University of Rio de Janeiro State (UNIRIO), Rio de Janeiro, Brazil
| | - Shunmugiah Karutha Pandian
- Department of Biotechnology, School of Biological Sciences, Science Campus, Alagappa University, Karaikudi 630 003, India
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Prasanth MI, Gayathri S, Bhaskar JP, Krishnan V, Balamurugan K. Analyzing the Synergistic Effects of Antioxidants in Combating Photoaging Using Model Nematode, Caenorhabditis elegans. Photochem Photobiol 2019; 96:139-147. [PMID: 31556119 DOI: 10.1111/php.13167] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/12/2019] [Indexed: 12/13/2022]
Abstract
Aging, a universal and unique process, occurs both intrinsically (chronological) and extrinsically (photoaging). Ultraviolet-A (UV-A)-mediated stress is a growing health hazard to mankind as it is the major cause of photoaging, which could lead to much damage of skin cells and tissues ranging from tan, burn, or even cancer. The present study focuses on the role of antioxidants and other natural compounds which have been widely used in oral/topical applications to combat and delay the effects of photoaging using model nematode Caenorhabditis elegans. Compounds like green tea extract, naringenin, and naringin, which are known for their antioxidant properties, were able to extend life span and healthspan of the nematode in normal as well as under UV-A-mediated stress conditions. Regulation of both the stress-responsive genes (skn-1 and sir-2.1) and the aging-regulating genes (daf-2 and age-1) was attributable for these conditions. Interestingly, it was observed that these compounds when combined in equal ratios by weight worked synergistically to combat the aging process. Pronounced synergistic effects were observed during UV-A-mediated stress conditions, suggesting that these could be used as potential antiphotoaging compounds which will be of greater significance for health-based research.
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Affiliation(s)
- Mani Iyer Prasanth
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi, Tamil Nadu, India
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Brimson JM, Prasanth MI, Plaingam W, Tencomnao T. Bacopa monnieri (L.) wettst. Extract protects against glutamate toxicity and increases the longevity of Caenorhabditis elegans. J Tradit Complement Med 2019; 10:460-470. [PMID: 32953562 PMCID: PMC7484969 DOI: 10.1016/j.jtcme.2019.10.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 01/22/2023] Open
Abstract
Background Neurodegenerative diseases, such as Alzheimer’s disease, cause a great deal of suffering for both patients and carers. Bacopa monnieri (L.) wettst. Is known for its memory-enhancing properties, and is of great interest in treating neurodegenerative disease. Aims This study aimed to evaluate B.monnieri against glutamate toxicity, and identify whether B.monnieri reduces mitochondrial and ER stress, as well as to measure B.monnieri’s effect on the life span and aging of Caenorhabditis elegans. We hypothesized that B.monnieri would prevent cellular oxidative stress, prevent mitochondrial/ER stress, and increase the life span while reducing signs of aging in C.elegans. Experimental procedures Glutamate toxicity was measured using viable cell staining assays and the MTT assay. ROS and mitochondrial stress were assessed by H2DCFDA and Rodamine123 staining, with fluorescence/confocal microscopy. C.elegans’ median and maximum life span were measured, in response to B.monnieri treatment, along with lipofuscin imaging to measure the health of the C.elegans population. Results B.monnieri hexane extract (but not ethanol extract) prevented the toxicity of 5 mM glutamate in HT-22 cells. We found that the mechanism involves the reduction of ROS production and the prevention of mitochondrial and ER stress. Furthermore, we showed that B.monnieri could increase the median and maximal lifespan of wild type C.elegans, maintain a younger appearing phenotype in the aged C.elegans. Conclusions In conclusion, B.monnieri prevents mitochondrial, and oxidative stress in the cultured cells. Furthermore, it can prolong the healthy lifespan of C.elegans, indicating that B.monnieri the potential for therapeutic and preventative use in neurodegenerative disease. First B.monnieri study to investigate the HT-22 cell glutamate toxicity model. B.monnieri protects HT-22 cells from oxidative stress caused by glutamate toxicity. B.monnieri prevents ER stress, changing the expression s of ER Stress proteins CHOP and ERP57. B.monnieri prevents mitochondrial stress, preventing mitochondrial leakage. B.monnieri increases the median and maximal life span, and reduces aging in wild type C.elegans.
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Affiliation(s)
- James Michael Brimson
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Rama 1 Road, Pathumwan, Bangkok, 10330, Thailand
| | - Mani Iyer Prasanth
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Rama 1 Road, Pathumwan, Bangkok, 10330, Thailand
| | - Waluga Plaingam
- College of Oriental Medicine, Rangsit University, 52/347 Muang Ake, Paholyothin Road, Lakhok, Pathumthani, 12000, Thailand
| | - Tewin Tencomnao
- Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, 154 Rama 1 Road, Pathumwan, Bangkok, 10330, Thailand
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Pooranachithra M, Bhaskar JP, Murali D, Das SS, JebaMercy G, Krishnan V, Balamurugan K. Unravelling the wound healing ability and mode of action of pyridine carboxamide oxime using Caenorhabditis elegans as potential prescreen wound model. Life Sci 2019; 235:116859. [DOI: 10.1016/j.lfs.2019.116859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/23/2019] [Accepted: 09/08/2019] [Indexed: 12/18/2022]
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UVA Photoprotective Activity of Brown Macroalgae Sargassum cristafolium. Biomedicines 2019; 7:biomedicines7040077. [PMID: 31569807 PMCID: PMC6966596 DOI: 10.3390/biomedicines7040077] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/15/2019] [Accepted: 09/25/2019] [Indexed: 12/31/2022] Open
Abstract
Sunscreens today contain several synthetic UV (Ultraviolet) filter molecules to protect the skin epidermis from UV radiation damage. However, these molecules may create several negative effects on human skin. Due to this condition, there is an increase in the development of natural products to replace uses of these synthetic chemicals. Brown macroalgae Sargassum has been recently studied for its photoprotective activities. The purpose of this study is to investigate photoprotective activity of one of most abundant Sargassum species in Lombok coast; Sargassum cristaefolium. Spectrophotometry analysis with UV-VIS revealed the UV spectra absorbing capability of Sargassum cristaefolium (SC) in the UVA spectrum range (314–400 nm). Furthermore, spectrometry analyses with LC-MS revealed the existence of UV absorbing compound MAA-palythene. In correlation, SC ethanol extracts also demonstrate that it could protect DNA from UVA irradiation as analyzed in vitro in HeLa cell model. The effects of SC on UVA exposed-dorsal mice skin have also shown interesting results, as mice pretreated with SC before UVA exposure showed protective activity on the epidermal integrity similar as positive control. Whereas, UV exposed mice without SC or commercial products resulted in increased epidermal thickness, which is the common parameter of skin photoaging. In addition, pretreated mice with SC also show protective effects in the formation of collagen connective tissues. Overall, current results show promising photoprotective activity of SC against UV radiation. More advanced investigations of SC as a potential photoprotective agent would be reasonable for development of macroalgae-based natural skin protection products.
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Prasanth MI, Venkatesh D, Murali D, Bhaskar JP, Krishnan V, Balamurugan K. Understanding the role of DAF-16 mediated pathway in Caenorhabditis elegans during UV-A mediated photoaging process. Arch Gerontol Geriatr 2019; 82:279-285. [DOI: 10.1016/j.archger.2019.03.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 03/04/2019] [Accepted: 03/11/2019] [Indexed: 01/08/2023]
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Prasanth MI, Sivamaruthi BS, Chaiyasut C, Tencomnao T. A Review of the Role of Green Tea ( Camellia sinensis) in Antiphotoaging, Stress Resistance, Neuroprotection, and Autophagy. Nutrients 2019; 11:nu11020474. [PMID: 30813433 PMCID: PMC6412948 DOI: 10.3390/nu11020474] [Citation(s) in RCA: 185] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 12/26/2022] Open
Abstract
Tea is one of the most widely consumed beverages worldwide, and is available in various forms. Green tea is richer in antioxidants compared to other forms of tea. Tea is composed of polyphenols, caffeine, minerals, and trace amounts of vitamins, amino acids, and carbohydrates. The composition of the tea varies depending on the fermentation process employed to produce it. The phytochemicals present in green tea are known to stimulate the central nervous system and maintain overall health in humans. Skin aging is a complex process mediated by intrinsic factors such as senescence, along with extrinsic damage induced by external factors such as chronic exposure to ultraviolet (UV) irradiation—A process known as photoaging—Which can lead to erythema, edema, sunburn, hyperplasia, premature aging, and the development of non-melanoma and melanoma skin cancers. UV can cause skin damage either directly, through absorption of energy by biomolecules, or indirectly, by increased production of reactive oxygen species (ROS) and reactive nitrogen species (RNS). Green tea phytochemicals are a potent source of exogenous antioxidant candidates that could nullify excess endogenous ROS and RNS inside the body, and thereby diminish the impact of photoaging. Several in vivo and in vitro studies suggest that green tea supplementation increases the collagen and elastin fiber content, and suppresses collagen degrading enzyme MMP-3 production in the skin, conferring an anti-wrinkle effect. The precise mechanism behind the anti-photoaging effect of green tea has not been explored yet. Studies using the worm model have suggested that green tea mediated lifespan extension depends on the DAF-16 pathway. Apart from this, green tea has been reported to have stress resistance and neuroprotective properties. Its ROS scavenging activity makes it a potent stress mediator, as it can also regulate the stress induced by metal ions. It is known that tea polyphenols can induce the expression of different antioxidant enzymes and hinder the DNA oxidative damage. Growing evidence suggests that green tea can also be used as a potential agent to mediate neurodegenerative diseases, including Alzheimer’s disease. EGCG, an abundant catechin in tea, was found to suppress the neurotoxicity induced by Aβ as it activates glycogen synthase kinase-3β (GSK-3β), along with inhibiting c-Abl/FE65—the cytoplasmic nonreceptor tyrosine kinase which is involved in the development of the nervous system and in nuclear translocation. Additionally, green tea polyphenols induce autophagy, thereby revitalizing the overall health of the organism consuming it. Green tea was able to activate autophagy in HL-60 xenographs by increasing the activity of PI3 kinase and BECLIN-1. This manuscript describes the reported anti-photoaging, stress resistance, and neuroprotective and autophagy properties of one of the most widely known functional foods—green tea.
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Affiliation(s)
- Mani Iyer Prasanth
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Bhagavathi Sundaram Sivamaruthi
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Chaiyavat Chaiyasut
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Tewin Tencomnao
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
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Cui F, Ma N, Han X, Chen N, Xi Y, Yuan W, Xu Y, Han J, Xu X, Tu Y. Effects of 60Co γ Irradiation on the Reproductive Function of Caenorhabditis elegans. Dose Response 2019; 17:1559325818820981. [PMID: 30733651 PMCID: PMC6343448 DOI: 10.1177/1559325818820981] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/07/2018] [Accepted: 11/18/2018] [Indexed: 12/15/2022] Open
Abstract
The effects of ionizing radiation on the reproductive system have always been a matter of great interest. Both artificial and naturally occurring ionizing radiation can directly or indirectly affect the reproductive system via the introduction of DNA single-strand and double-strand breaks, the excitation of water molecules, and the generation of free radicals. In order to quantitatively investigate the effects of ionizing radiation on reproductive function, 60Co γ irradiation was applied on a model organism, Caenorhabditis elegans (C. elegans). The egg-laying and embryo-hatching activities were observed for the parent (F0) and the first 2 progeny (F1 and F2) generations. The incidence rate of ovipositor malformation was also recorded. Acridine orange was used to detect the number of apoptotic germ cells. With the above metrics, the effects of 60Co γ irradiation on the reproductive function of C. elegans were systematically evaluated. The results showed that the postirradiation egg-laying and embryo-hatching activities of the F0 generation were increasingly suppressed by increasing doses of 60Co γ irradiation. Those of the F1 generation showed a trend toward recovery although also suppressed by the radiation to the F0 generation compared with the control. Those activities were restored to normal or near-normal levels for the F2 generation. The incidence rate of ovipositor malformation was greatly increased by 60Co γ irradiation according to radiation doses. Gamma irradiation by 60Co also substantially induced germ cell apoptosis, and the apoptosis rate increased with increasing radiation doses. Therefore, 60Co γ irradiation affects the reproductive function of C. elegans. The suppression on its reproductive function increases with increasing radiation doses. The reproductive functions of progeny generations are also affected and weakened.
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Affiliation(s)
- Fengmei Cui
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Nan Ma
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Xiaojing Han
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Department of Hematology and Oncology, The First Affiliated Hospital of Suzhou University, Suzhou, China
| | - Na Chen
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Yue Xi
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Weiye Yuan
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Yufan Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Jianfang Han
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Xiaoyan Xu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
| | - Yu Tu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Suzhou, China
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Killed Bifidobacterium longum enhanced stress tolerance and prolonged life span of Caenorhabditis elegans via DAF-16. Br J Nutr 2018; 120:872-880. [PMID: 30178731 DOI: 10.1017/s0007114518001563] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Probiotics are bacteria among the intestinal flora that are beneficial for human health. Bifidobacterium longum (BL) is a prototypical probiotic that is widely used in yogurt making, supplements and others. Although various physiological effects of BL have been reported, those associated with longevity and anti-ageing still remain elusive. Here we aimed to elucidate the physiological effects of killed BL (BR-108) on stress tolerance and longevity of Caenorhabditis elegans and their mechanisms. Worms fed killed BL in addition to Escherichia coli (OP50) displayed reduced body length in a BL dose-dependent manner. When compared with those fed E. coli alone, these worms had a higher survival rate following heat stress at 35°C and hydrogen peroxide-induced oxidative stress. A general decrease in motility was observed over time in all worms; however, killed BL-fed ageing worms displayed increased movement and longer life span than those fed E. coli alone. However, the longevity effect was suppressed in sir-2.1, daf-16 and skn-1-deficient worms. Killed BL induced DAF-16 nuclear localisation and increased the expression of the DAF-16 target gene hsp-12.6. These results revealed that the physiological effects of killed BL in C. elegans were mediated by DAF-16 activation. These findings contradict previous observations with different Bifidobacterium and Lactobacillus strains, which showed the role for SKN-1 independently of DAF-16.
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Studies on reproductive stress caused by candidate Gram positive and Gram negative bacteria using model organism, Caenorhabditis elegans. Gene 2018; 649:113-126. [DOI: 10.1016/j.gene.2018.01.088] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/09/2018] [Accepted: 01/26/2018] [Indexed: 02/03/2023]
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