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Ivarsson J, Bennett A, Ferrara F, Strauch R, Vallase A, Iorizzo M, Pecorelli A, Lila MA, Valacchi G. Gut-derived wild blueberry phenolic acid metabolites modulate extrinsic cutaneous damage. Food Funct 2024. [PMID: 38962816 DOI: 10.1039/d4fo01874e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
As the first line of defense, the skin is equipped with various physiological mechanisms positioned to prevent incoming oxidative damage from numerous environmental insults. With persistent exposure to the environment, understanding ways to augment the skin defenses is paramount in protecting from premature aging. In this study, we investigated the ability of five dietary phenolic metabolites, typically found in the bloodstream after wild blueberry consumption, to successfully defend the skin from UV light exposure in a novel ex vivo co-culture model of human skin explants and primary endothelial cells. Skin explants, placed in transwell inserts, were exposed to UV, and subsequently co-cultured with endothelial cells. When the endothelial cells had been pretreated with the bioactive metabolites at physiological concentrations (hippuric acid 3000 nM, isoferulic acid 1000 nM, salicylic acid 130 nM, benzoic acid 900 nM, α-hydroxyhippuric acid 400 nM) cutaneous damage was prevented on the co-cultured with UV-challenged skin explants. Co-culture with non-pretreated endothelial cells did not protect skin explants. Specifically, the pretreatment was able to reduce skin lipid peroxidation (measured as 4-hydroxynonenal protein adducts), and pro-inflammatory enzymes such as cyclooxygenase 2 (COX-2) and NADPH oxidase 4 (NOX-4). Furthermore, pretreatment with the metabolites prevented UV-induced release of inflammatory cytokines such as IL-1β and IL-8 as well as nitric oxides (NO) levels. In addition, the metabolites showed an impressive ability to prevent the loss of cutaneous structural proteins including involucrin and collagen type 1. Of note, endothelial cells cultured with UV exposed skin explants exhibited increased oxidative stress demonstrated by heme oxygenase-1 (HO-1) up-regulation which was significantly prevented in the metabolite treated models. These findings highlight the ability of dietary polyphenolic metabolites to improve cutaneous defenses against extrinsic stressors.
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Affiliation(s)
- John Ivarsson
- Department of Animal Science, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA.
- Department of Food Bioprocessing & Nutrition Sciences, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
| | - Abby Bennett
- Department of Food Bioprocessing & Nutrition Sciences, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
| | - Francesca Ferrara
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Renee Strauch
- Department of Food Bioprocessing & Nutrition Sciences, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
| | - Andrea Vallase
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Massimo Iorizzo
- Department of Horticultural Science, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
| | - Alessandra Pecorelli
- Department of Food Bioprocessing & Nutrition Sciences, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Mary Ann Lila
- Department of Food Bioprocessing & Nutrition Sciences, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA
| | - Giuseppe Valacchi
- Department of Animal Science, Plants for Human Health Institute, NC Research Campus, NC State University, Kannapolis, NC 28081, USA.
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy
- Kyung Hee University, Department of Food and Nutrition, Seoul, South Korea
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Ying M, Zeng Z, Li Q, Chen X, Xiong Y, Wu B, Peng L, Zhang Q, Wang L, Dai Z, Li S, Chen H, Yang X. Water-soluble intracellular extract of Desmodesmus sp. YT enhanced the antioxidant capacity of human skin fibroblast to protect the skin from UV damage. J Cosmet Dermatol 2024; 23:1850-1861. [PMID: 38327116 DOI: 10.1111/jocd.16184] [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: 07/28/2023] [Revised: 12/28/2023] [Accepted: 01/04/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND The oxidative stress induced by ultraviolet (UV) radiation is a pivotal factor in skin aging and can even contribute to the development of skin cancer. AIM This study explored the antioxidant effect and mechanism of water-soluble intracellular extract (WIE) of Desmodesmus sp.YT (YT), aiming to develop a natural antioxidant suitable for incorporation into cosmetics. METHODS The study evaluated the scavenging capacity of YT-WIE against free radicals and assessed its impact on human skin fibroblasts (HSF) cell viability and UV resistance using Cell Counting Kit-8 (CCK-8). Transcriptome sequencing was employed to elucidate the mechanism of action, while RT-qPCR and western blot were used to validate the expression of key genes. RESULTS YT-WIE displayed robust antioxidant activity, demonstrating potent scavenging abilities against 2,2-diphenyl-1-picrylhydrazyl (DPPH; IC50 = 0.55 mg mL-1), 2,2'-Azino-bis (3 ethylbenzothiazoline-6-sulfonic acid; ABTS; IC50 = 3.11 mg mL-1), Hydroxyl (·OH; IC50 = 2.21 mg mL-1), and Superoxide anion (O2 •-; IC50 = 0.98 mg mL-1). Furthermore, compared to the control group, the YT-WIE group exhibited an 89.30% enhancement in HSF viability and a 44.63% increase in survival rate post-UV irradiation. Significant upregulation of antioxidant genes (GCLC, GCLM, TXNRD1, HMOX1, NQO1) was observed with YT-WIE treatment at 400 μg mL-1, with fold increases ranging from 1.13 to 5.85 times. CONCLUSION YT-WIE demonstrated considerable potential as an antioxidant, shielding human cells from undue oxidative stress triggered by external stimuli such as UV radiation. This suggests its promising application in cosmetics antioxidants.
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Affiliation(s)
- Ming Ying
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
- Innova Bay (Shenzhen) Technology Co. Ltd, Shenzhen, China
- Pingshan Translational Medicine Center, Shenzhen Bay Laboratory, Shenzhen, China
| | - Zuye Zeng
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Qin Li
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Xianglan Chen
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Ying Xiong
- Department of Dermatology, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Bo Wu
- Department of Dermatology, Affiliated Shenzhen Maternity and Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Liang Peng
- Shenzhen Mental Health Center, Shenzhen Kangning Hospital, Shenzhen, China
| | - Qian Zhang
- The Sixth Affiliated Hospital of Shenzhen University and Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, China
| | - Li Wang
- Department of Dermatology, Shenzhen University General Hospital, Shenzhen, China
| | - Zhongming Dai
- Shenzhen University General Hospital, Shenzhen, China
| | - Shuangfei Li
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Huirong Chen
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Xuewei Yang
- Guangdong Key Laboratory of Plant Epigenetics, Guangdong Technology Research Center for Marine Algal Bioengineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
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3
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Du F, Yang LH, Liu J, Wang J, Fan L, Duangmano S, Liu H, Liu M, Wang J, Zhong X, Zhang Z, Wang F. The role of mitochondria in the resistance of melanoma to PD-1 inhibitors. J Transl Med 2023; 21:345. [PMID: 37221594 DOI: 10.1186/s12967-023-04200-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 05/14/2023] [Indexed: 05/25/2023] Open
Abstract
Malignant melanoma is one of the most common tumours and has the highest mortality rate of all types of skin cancers worldwide. Traditional and novel therapeutic approaches, including surgery, targeted therapy and immunotherapy, have shown good efficacy in the treatment of melanoma. At present, the mainstay of treatment for melanoma is immunotherapy combined with other treatment strategies. However, immune checkpoint inhibitors, such as PD-1 inhibitors, are not particularly effective in the clinical treatment of patients with melanoma. Changes in mitochondrial function may affect the development of melanoma and the efficacy of PD-1 inhibitors. To elucidate the role of mitochondria in the resistance of melanoma to PD-1 inhibitors, this review comprehensively summarises the role of mitochondria in the occurrence and development of melanoma, targets related to the function of mitochondria in melanoma cells and changes in mitochondrial function in different cells in melanoma resistant to PD-1 inhibitors. This review may help to develop therapeutic strategies for improving the clinical response rate of PD-1 inhibitors and prolonging the survival of patients by activating mitochondrial function in tumour and T cells.
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Affiliation(s)
- Fei Du
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Lu-Han Yang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Jiao Liu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
- Department of Pharmacy, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Jian Wang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Lianpeng Fan
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Suwit Duangmano
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Hao Liu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Minghua Liu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Jun Wang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
| | - Xiaolin Zhong
- Department of Pharmacy, Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Zhuo Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China.
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Fang Wang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China.
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand.
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Mokhtarpour N, Sterling A, Garcia JJ, Gutierrez-Rivera L, Senevirathne P, Luisa Kadekaro A, Merino EJ. Identification of a Noxo1 inhibitor by addition of a polyethylene glycol chain. Bioorg Med Chem 2023; 85:117274. [PMID: 37031566 DOI: 10.1016/j.bmc.2023.117274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 04/11/2023]
Abstract
Reactive oxygen species (ROS) are a heterogeneous group of highly reactive ions and molecules derived from molecular oxygen (O2) which can cause DNA damage and lead to skin cancer. NADPH oxidase 1 (Nox1) is a major producer of ROS in the skin upon exposure to ultraviolet light. Functionally, Nox1 forms a holoenzyme complex that generates two superoxide molecules and reduces NADPH. The signaling activation occurs when the organizer subunit Noxo1 translocates to the plasma membrane bringing a cytochrome p450, through interaction with Cyba. We propose to design inhibitors that prevent Cyba-Noxo1 binding as a topical application to reduce UV-generated ROS in human skin cells. Design started from an apocynin backbone structure to generate a small molecule to serve as an anchor point. The initial compound was then modified by addition of a polyethylene glycol linked biotin. Both inhibitors were found to be non-toxic in human keratinocyte cells. Further in vitro experiments using isothermal calorimetric binding quantification showed the modified biotinylated compound bound Noxo1 peptide with a KD of 2 nM. Both using isothermal calorimetric binding and MALDI (TOF) MS showed that binding of a Cyba peptide to Noxo1 was blocked. In vivo experiments were performed using donated skin explants with topical application of the two inhibitors. Experiments show that ultraviolet light exposure of with the lead compound was able to reduce the amount of cyclobutene pyrimidine dimers in DNA, a molecule known to lead to carcinogenesis. Further synthesis showed that the polyethylene glycol but not the biotin was essential for inhibition.
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Affiliation(s)
- Nazanin Mokhtarpour
- Department of Chemistry and Biochemistry, University of Cincinnati, Cincinnati, OH, United States
| | - Alyssa Sterling
- Department of Chemistry and Biochemistry, University of Cincinnati, Cincinnati, OH, United States
| | - Joshua J Garcia
- Department of Biomedical Education, California Health Science University, Clovis, CA, United States
| | - Laura Gutierrez-Rivera
- Department of Biomedical Education, California Health Science University, Clovis, CA, United States
| | - Prasadini Senevirathne
- Department of Chemistry and Biochemistry, University of Cincinnati, Cincinnati, OH, United States
| | - Ana Luisa Kadekaro
- Department of Dermatology, University of Cincinnati, Cincinnati, OH, United States
| | - Edward J Merino
- Department of Biomedical Education, California Health Science University, Clovis, CA, United States
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Ruan S, Erwin N, He M. Light-induced high-efficient cellular production of immune functional extracellular vesicles. J Extracell Vesicles 2022; 11:e12194. [PMID: 35230743 PMCID: PMC8886920 DOI: 10.1002/jev2.12194] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 12/24/2021] [Accepted: 01/31/2022] [Indexed: 12/13/2022] Open
Abstract
Extracellular vesicle (EV)‐based therapies and vaccines are emerging. However, employment at the scale for population‐based dose development is always a huge bottleneck. In order to overcome such a roadblock, we introduce a simple and straightforward approach for promoting cellular production of dendritic cell derived EVs (DEVs) by leveraging phototherapy based light induction. Under the optimization of light wavelengths, intensities, and exposure times, we achieved more than 13‐fold enhancement in DEV production rate, while maintaining good integral quality and immune function from produced EVs. The LED light at 365 nm is optimal to reliably trigger enhanced cellular production of EVs no matter cell line types. Our observation and other reported studies support longer near UV wavelength does not impair cell growth. We conducted a series of investigations in terms of size, zeta potential, morphology, immune surface markers and cytokines, biocompatibility, cellular uptake behaviour, and immune‐modulation ability on eliciting cellular responses in vitro. We also validated the biodistribution, immunogenicity, and administration safety using light‐promoted DEVs in mice models from both male and female genders. Overall data supports that light promoted DEVs are highly immune functional with great biocompatibility for serving as good therapeutic platforms. The in vivo animal study also demonstrated light‐promoted DEVs are as well tolerated as native DEVs, with no safety concerns. Taken together, the data supports that light promoted DEVs are in excellent quality, high biocompatibility, in vivo tolerant, and viable for serving as an ideal therapeutic platform in scalable production.
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Affiliation(s)
- Shaobo Ruan
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, Florida, USA
| | - Nina Erwin
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, Florida, USA
| | - Mei He
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, Florida, USA
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6
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Maya-Cano DA, Arango-Varela S, Santa-Gonzalez GA. Phenolic compounds of blueberries ( Vaccinium spp) as a protective strategy against skin cell damage induced by ROS: A review of antioxidant potential and antiproliferative capacity. Heliyon 2021; 7:e06297. [PMID: 33665449 PMCID: PMC7903303 DOI: 10.1016/j.heliyon.2021.e06297] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/05/2021] [Accepted: 02/11/2021] [Indexed: 02/07/2023] Open
Abstract
The skin is a tissue with a high metabolic activity that acts as a protective layer for the internal organs of the body. This tissue is exposed to a variety of damaging agents, including reactive oxygen species (ROS), which can lead to oxidative damage to various macromolecules, disrupting vital cellular processes and increasing mutations. A situation referred to as oxidative stress occurs when a large amount of oxidants exceeds the capacity of the antioxidant defense system. Oxidative stress is considered a contributory factor to the aging process and the pathogenesis of various skin diseases, including cancer. Several current studies seek to identify new natural compounds with properties that mitigate the harmful effects of ROS, thereby acting as blockers or suppressors of the carcinogenesis process. This review briefly presents the relationship between ultraviolet radiation, ROS, and skin damage; and summarizes the in vitro and in vivo experimental evidence of the chemopreventive effect on skin cancer of phenolic compounds from blueberries (Vaccinium spp). Although several studies addressed the topic of bioactive compounds and their activities as possible anticancer agents, none have focused on the antioxidative action and antiproliferative effects on skin cancer of phenolic compounds derived from blueberries.
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Affiliation(s)
- Daniela A Maya-Cano
- Biomedical Innovation and Research Group, Faculty of Applied and Exact Sciences, Instituto Tecnológico Metropolitano, Medellín, Colombia
| | - Sandra Arango-Varela
- Biomedical Innovation and Research Group, Faculty of Applied and Exact Sciences, Instituto Tecnológico Metropolitano, Medellín, Colombia
| | - Gloria A Santa-Gonzalez
- Biomedical Innovation and Research Group, Faculty of Applied and Exact Sciences, Instituto Tecnológico Metropolitano, Medellín, Colombia
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7
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Gao X, Xu D, Zhang X, Zhao H. Protective Effect of Lemon Peel Polyphenols on Oxidative Stress-Induced Damage to Human Keratinocyte HaCaT Cells Through Activation of the Nrf2/HO-1 Signaling Pathway. Front Nutr 2021; 7:606776. [PMID: 33585534 PMCID: PMC7874231 DOI: 10.3389/fnut.2020.606776] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 12/21/2020] [Indexed: 12/11/2022] Open
Abstract
Lemon peel can be used as traditional Chinese medicine. Flavonoids are the most important components in lemon peel, which can be developed as natural medicine without side effects. This study investigated the protective effect of lemon peel polyphenols (LPP) on human keratinocyte HaCaT cells under oxidative stress. The active components of LPP were determined by high performance liquid chromatography. The abilities of LPP to scavenge DPPH and ABTS+ free radicals were studied for detection of antioxidation in vitro. Cell survival rates were determined by MTT assay. The antioxidant enzyme activity and antioxidant index of cells were determined using kit. The mRNA and protein expression of cells were determined by qPCR and western blot. The ability of LPP to scavenge DPPH and ABTS+ free radicals were stronger than those of vitamin C (Vc) at the same concentration. As expected, compared with the normal group of cells, the model group had decreased cell survival, increased lactate dehydrogenase (LDH), decreased levels of superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH), and increased malondialdehyde (MDA) content. qPCR and western blot results indicated that the expression of Bcl-2-related X protein (Bax), caspases-3, erythroid-derived nuclear factor 2-related factor 2 (Nrf2), and heme oxygenase-1 (HO-1) were decreased and the expression of B-cell lymphoma-2 (Bcl-2) was increased in the model group, compared with the normal group. LPP treatment improved cell survival rate, reduced intracellular LDH and MDA levels, increased intracellular SOD, CAT, GSH levels, down-regulated Bax, caspases-3, Nrf2, HO-1 expression, and up-regulated Bcl-2 expression. Component analyses found that LPP contains gallic acid, neochlorogenic acid, (+)-catechin, caffeic acid, (-)-Catechin gallate, isochlorogenic acid A, rosmarinic acid, and protocatechuic acid. LPP was found to regulate the Nrf2/HO-1 signaling pathway through 8 active substances to protect HaCaT cells against oxidative stress in vitro.
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Affiliation(s)
| | | | | | - Hengguang Zhao
- Department of Dermato-Venereology, University-Town Hospital of Chongqing Medical University, Chongqing, China
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8
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Zhu H, Mishra R, Yuan L, Abdul Salam SF, Liu J, Gray G, Sterling AD, Wunderlich M, Landero-Figueroa J, Garrett JT, Merino EJ. Oxidative Cyclization-Induced Activation of a Phosphoinositide 3-Kinase Inhibitor for Enhanced Selectivity of Cancer Chemotherapeutics. ChemMedChem 2019; 14:1933-1939. [PMID: 31696673 DOI: 10.1002/cmdc.201900481] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/03/2019] [Indexed: 12/18/2022]
Abstract
In this work, we designed a prodrug that reacts with cellular oxidative equivalents leading to ether cleavage and cyclization to release an active phosphatidylinositol 3-kinase (PI3K) inhibitor. We show that the compound reduces affinity for PI3KA relative to the PI3K inhibitor, is slow to intercellularly oxidize, and is resistant to liver microsomes. We observed modest activity in untreated acute myeloid leukemia cells and 14-fold selectivity relative to non-cancerous cells. The cellular activity of the compound can be modulated by the addition of antioxidants or oxidants, indicating the compound activity is sensitive to cellular reactive oxygen species (ROS) state. Co-treatment with cytosine arabinoside or doxorubicin was used to activate the compound inside cells. We observed strong synergistic activity specifically in acute myeloid leukemia (AML) cancer cells with an increase in selective anticancer activity of up to 90-fold. Thus, these new self-cyclizing compounds can be used to increase the selectivity of anticancer agents.
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Affiliation(s)
- Haizhou Zhu
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Rosalin Mishra
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Long Yuan
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Safnas F Abdul Salam
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Jing Liu
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - George Gray
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Alyssa D Sterling
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Mark Wunderlich
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45221, USA
| | - Julio Landero-Figueroa
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Joan T Garrett
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Edward J Merino
- Figueroa, Prof. Dr. Edward. J. Merino* Department of Chemistry, McMicken College of Arts and Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
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9
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Chen L, Karisma VW, Liu H, Zhong L. MicroRNA-300: A Transcellular Mediator in Exosome Regulates Melanoma Progression. Front Oncol 2019; 9:1005. [PMID: 31681565 PMCID: PMC6803498 DOI: 10.3389/fonc.2019.01005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/18/2019] [Indexed: 01/11/2023] Open
Abstract
Melanoma is a common and high-mortality skin cancer. Oxidative stress and DNA damage caused by ultraviolet light (UV) are major causative factors of melanoma formation. However, the specific molecular mechanism is still unclear. In this study, 218 dysregulated genes and 104 dysregulated miRNAs in response to UV were screened by analyzing sequencing datasets. Among them, 29 up-regulated miRNAs and 28 down-regulated miRNAs were involved in the melanoma pathway. As the only differential gene in the melanoma pathway, GADD45B severely affects the prognosis of melanoma patients. MiR-300 is the only differentially expressed miRNA that regulates GADD45B. In addition, compared to normal melanocytes, miR-300 was significantly down-regulated in melanoma cells (log FC = −1.63) and exosomes (log FC = −1.34). Among the transcription factors predicted to regulate miR-300, MYC, PPARG, and ZIC2 were significantly up-regulated in melanoma cells, and TP53, JUN, JUNB, FOS, and FOSB interacted with GADD45B. We attempted to reveal the pathogenesis of melanoma and screen new biomarkers by constructing a TF-mRNA-miRNA axis in turn to provide a view for further research.
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Affiliation(s)
- Long Chen
- Bioengineering Institute of Chongqing University, Chongqing, China
| | | | - Huawen Liu
- Three Gorges Central Hospital, Chongqing, China
| | - Li Zhong
- Bioengineering Institute of Chongqing University, Chongqing, China
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10
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Liu F, Lin C, Hong J, Cai C, Zhang W, Zhang J, Guo L. Apocynin protects retina cells from ultraviolet radiation damage via inducing sirtuin 1. J Drug Target 2019; 28:330-338. [PMID: 31479288 DOI: 10.1080/1061186x.2019.1663527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Direct exposure to Ultraviolet (UV) radiation causes progressive damages in retinal cells, which is one of the hypothetical mechanisms underlying age-related retinopathy or macular degeneration. The protective effects of Apocynin against UV damages were firstly tested in retinal pigment epithelium cells (RPEs) and retinal ganglion cells (RGCs). Subsequently the beneficial effect of Apocynin on mouse retinas against light damage were examined. Next, microarray profiling was used to identify the genes regulated by Apocynin in both RPEs and RGCs. A candidate gene was isolated for functional characterisation by knock-down study. Apocynin was shown to inhibit cell death, reduce oxidative stress and deoxyribonucleic acid damages in both RPEs and RGCs challenged with UV. Intravitreal application of Apocynin also improved retinal dysfunction caused by light damage. Sirtuin 1 (SIRT1) was identified as induced by Apocynin by microarray study. The induction was confirmed by realtime-PCR and western blotting. Knocking down SIRT1 antagonised the protective effect of Apocynin against UV damages in both RPEs and RGCs. Apocynin is a novel agent that shows both in vitro and in vivo efficacies against UV radiation induced retina damages. SIRT1 pathway is implicated in UV radiation protection of Apocynin in retinal cells.
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Affiliation(s)
- Feng Liu
- Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Chen Lin
- Department of Ophthalmology, Shenzhen Aier Eye Hospital, Shenzhen, China
| | - Jinsheng Hong
- Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Chuanshu Cai
- Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Weijian Zhang
- Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Jianrong Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Lihong Guo
- Department of Radiation Oncology, The First Affiliated Hospital of Fujian Medical University, Fujian, China
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