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Mbara KC, Fotsing MC, Ndinteh DT, Mbeb CN, Nwagwu CS, Khan R, Mokhetho KC, Baijnath H, Nlooto M, Mokhele S, Leonard CM, Tembu VJ, Tarirai C. Endoplasmic reticulum stress in pancreatic β-cell dysfunction: The potential therapeutic role of dietary flavonoids. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2024; 6:100184. [PMID: 38846008 PMCID: PMC11153890 DOI: 10.1016/j.crphar.2024.100184] [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: 02/01/2024] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
Diabetes mellitus (DM) is a global health burden that is characterized by the loss or dysfunction of pancreatic β-cells. In pancreatic β-cells, endoplasmic reticulum (ER) stress is a fact of life that contributes to β-cell loss or dysfunction. Despite recent advances in research, the existing treatment approaches such as lifestyle modification and use of conventional therapeutics could not prevent the loss or dysfunction of pancreatic β-cells to abrogate the disease progression. Therefore, targeting ER stress and the consequent unfolded protein response (UPR) in pancreatic β-cells may be a potential therapeutic strategy for diabetes treatment. Dietary phytochemicals have therapeutic applications in human health owing to their broad spectrum of biochemical and pharmacological activities. Flavonoids, which are commonly obtained from fruits and vegetables worldwide, have shown promising prospects in alleviating ER stress. Dietary flavonoids including quercetin, kaempferol, myricetin, isorhamnetin, fisetin, icariin, apigenin, apigetrin, vitexin, baicalein, baicalin, nobiletin hesperidin, naringenin, epigallocatechin 3-O-gallate hesperidin (EGCG), tectorigenin, liquiritigenin, and acacetin have shown inhibitory effects on ER stress in pancreatic β-cells. Dietary flavonoids modulate ER stress signaling components, chaperone proteins, transcription factors, oxidative stress, autophagy, apoptosis, and inflammatory responses to exert their pharmacological effects on pancreatic β-cells ER stress. This review focuses on the role of dietary flavonoids as potential therapeutic adjuvants in preserving pancreatic β-cells from ER stress. Highlights of the underlying mechanisms of action are also presented as well as possible strategies for clinical translation in the management of DM.
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Affiliation(s)
- Kingsley C. Mbara
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Marthe C.D. Fotsing
- Drug Discovery and Smart Molecules Research Laboratory, Centre for Natural Products Research (CNPR), Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa
| | - Derek T. Ndinteh
- Drug Discovery and Smart Molecules Research Laboratory, Centre for Natural Products Research (CNPR), Department of Chemical Sciences, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa
| | - Claudine N. Mbeb
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Chinekwu S. Nwagwu
- Drug Delivery and Nanomedicines Research Laboratory, Department of Pharmaceutics, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Rene Khan
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban, South Africa
| | - Kopang C. Mokhetho
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Himansu Baijnath
- Ward Herbarium, School of Life Sciences, University of KwaZulu-Natal, Durban, 4000, KwaZulu-Natal, South Africa
| | - Manimbulu Nlooto
- Department of Pharmaceutical Sciences, Healthcare Sciences, University of Limpopo, South Africa
| | - Shoeshoe Mokhele
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria, 0208, South Africa
| | - Carmen M. Leonard
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Vuyelwa J. Tembu
- Natural Products Chemistry Research Laboratory, Department of Chemistry, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Clemence Tarirai
- Nanomedicines Manufacturing, Biopharmaceutics and Diagnostics Research Laboratory, Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
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Xu H, Yang H, Wang Z, Tang Q, Cao X, Chen C, Dong Y, Xu Z, Lv D, Rong Y, Chen M, Tang B, Deng W, Zhu J, Hu Z. Epidermal Stem Cell Derived Exosomes Alleviate Excessive Autophagy Induced Endothelial Cell Apoptosis by Delivering miR200b-3p to Diabetic Wounds. J Invest Dermatol 2024; 144:1134-1147.e2. [PMID: 37838331 DOI: 10.1016/j.jid.2023.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 08/03/2023] [Accepted: 08/30/2023] [Indexed: 10/16/2023]
Abstract
The dysfunction of endothelial cells caused by hyperglycemia is observed as a decrease in neovascularization in diabetic wound healing. Studies have found that epidermal stem cells (EpiSCs) can promote the angiogenesis of full-thickness wounds. To further explain the therapeutic effect of EpiSCs, EpiSC-derived exosomes (EpiSC-EXOs) are considered the main substance contributing to stem cell effectivity. In our study, EpiSCs and EpiSC-EXOs were supplied to the dorsal wounds of db/db mice. Results showed that EpiSCs could colonize in the wound area and both EpiSCs and EpiSC-EXOs could accelerate diabetic wound healing by promoting angiogenesis. In vitro, persistent high glucose led to the malfunction and apoptosis of endothelial cells. The apoptosis induced by high glucose is due to excessive autophagy and was alleviated by EpiSC-EXOs. RNA sequencing of EpiSC-EXOs showed that miR200b-3p was enriched in EpiSC-EXOs and alleviated the apoptosis of endothelial cells. Synapse defective rho GTPase homolog 1 was identified the target of miR200b-3p and affected the phosphorylation of ERK to regulate intracellular autophagy and apoptosis. Furthermore, animal experiments validated the angiogenic effect of miR200b-3p. Collectively, our results verified the effect of EpiSC-EXOs on apoptosis caused by hyperglycemia in endothelial cells through the miR200b-3p/synapse defective rho GTPase homolog 1 /RAS/ERK/autophagy pathway, providing a theoretical basis for EpiSC in treating diabetic wounds.
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Affiliation(s)
- Hailin Xu
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Hao Yang
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Zhiyong Wang
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Qizhi Tang
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Nanhai Hospital of Traditional Chinese Medicine of Jinan University, Foshan, China
| | - Xiaoling Cao
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Chufen Chen
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Yunxian Dong
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Zhongye Xu
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Dongming Lv
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Yanchao Rong
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Miao Chen
- Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Nanhai Hospital of Traditional Chinese Medicine of Jinan University, Foshan, China
| | - Bing Tang
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Wuguo Deng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, China
| | - Jiayuan Zhu
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China
| | - Zhicheng Hu
- First Affiliated Hospital of Sun Yat-sen University, Burn department, Guangzhou, China.
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Salar FJ, Sánchez-Bravo P, Mena P, Cámara M, García-Viguera C. Comparison of vitamin C and flavanones between freshly squeezed orange juices and commercial 100% orange juices from four European countries. Int J Food Sci Nutr 2024; 75:255-263. [PMID: 38230429 DOI: 10.1080/09637486.2024.2303034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 01/03/2024] [Indexed: 01/18/2024]
Abstract
Knowing the true levels of nutrients and dietary bioactives in fruit juices at the point of consumption is key to properly understand their potential health benefits. The objective was to characterise the vitamin C and flavanone content in commercial orange juices consumed in Europe, compared with fresh-squeezed juices. Commercial juices were a rich source of vitamin C (>30% of the Nutrient Reference Value). Vitamin C in fresh-squeezed juices, at the end of their shelf-life, remained 33% higher than the levels found in the commercial juices. Flavanones had similar values from both commercial and fresh juices, except for fresh samples stored for 48 h, where fresh juices had higher values (22.36 mg/100 mL). Thus, orange juices preserve their bioactive compounds during storage, with very little influence of the brand, country, industrial process or storage conditions. Main bioactive compounds in commercial juices are present at nutritionally significant levels to the freshly-squeezed ones.
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Affiliation(s)
- Francisco J Salar
- Lab. Fitoquímica y Alimentos Saludables (LabFAS), CSIC, CEBAS, Murcia, Spain
| | - Paola Sánchez-Bravo
- Lab. Fitoquímica y Alimentos Saludables (LabFAS), CSIC, CEBAS, Murcia, Spain
- Centro de Investigación e Innovación Agroalimentaria y Agroambiental (CIAGRO), Universidad Miguel Hernández de Elche (UMH), Orihuela, Spain
| | - Pedro Mena
- Human Nutrition Unit, Department of Food and Drug, University of Parma, Parma, Italy
| | - Montaña Cámara
- Nutrition and Food Science Department. Pharmacy Faculty, Complutense University of Madrid, Madrid, Spain
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Tobaruela EDC, Brasili E, Zeraik L, Milenkovic D, Hassimotto NMA, Lajolo FM. Plasma proteome profiling reveals molecular mechanisms underlying the effects of daily consumption of 'Bahia' and 'Cara Cara' orange juices. Food Funct 2024; 15:1031-1049. [PMID: 38193367 DOI: 10.1039/d3fo04091g] [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: 01/10/2024]
Abstract
Orange juice is an important food source of bioactive compounds, mainly the flavanones hesperidin and narirutin. This study aimed to investigate the underlying molecular mechanisms of action of orange juice's health properties by analyzing changes in the plasma proteome of healthy Brazilian volunteers after consuming juices made from 'Bahia' (BOJ-source of flavanones) and 'Cara Cara' (CCOJ-source of flavanones and carotenoids) oranges cultivated in Brazil. We used an untargeted proteomic approach, with a particular emphasis on the juices' effects on blood coagulant activity. We identified 247 differentially expressed proteins, of which 170 significantly increased or decreased after BOJ consumption and 145 after CCOJ. These proteins are involved in 105 processes that can significantly regulate cell adhesion, cell signaling, cell metabolism, inflammation, or others. Bioinformatic analysis evidenced proteins with major cellular regulatory capacity (e.g., FN1 and GAPDH) and predicted transcription factors (TFs) (e.g., SP1 and CEBPA) and miRNAs (e.g., miR-1-3p and miR-615-3p) that could be involved in the regulation of differentially expressed proteins. In-silico docking analyses between flavanone metabolites and TFs evidenced the higher binding capacity of narirutin phase II metabolites with akt1 and p38, interactions that suggest how the expression of genes of differentially expressed proteins were activated or inhibited. Moreover, the study shed light on proteins of coagulation cascade that presented expression modulated by both juices, proposing the modulation of blood coagulant activity as a potential benefit of OJ (mainly CCOJ) consumption. Taken together, this study revealed that BOJ and CCOJ consumption affected plasma proteome in healthy individuals, suggesting potential molecular targets and mechanisms of OJ bioactive compounds in humans.
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Affiliation(s)
- Eric de Castro Tobaruela
- Food Research Center (FoRC), Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil.
| | - Elisa Brasili
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Laila Zeraik
- Food Research Center (FoRC), Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil.
| | - Dragan Milenkovic
- Department of Nutrition, University of California Davis, 95616 Davis, CA, USA
| | - Neuza Mariko Aymoto Hassimotto
- Food Research Center (FoRC), Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil.
| | - Franco Maria Lajolo
- Food Research Center (FoRC), Department of Food and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil.
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