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Gao Y, Liu ZZ, Zhang JB, Zhou CK, Zhang JG, Lin XQ, Yin Q, Chen W, Yang YJ. Dihydroartemisinin is an inhibitor of trained immunity through Akt/mTOR/HIF1α signaling pathway. Exp Cell Res 2024; 438:114052. [PMID: 38636651 DOI: 10.1016/j.yexcr.2024.114052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 04/08/2024] [Accepted: 04/14/2024] [Indexed: 04/20/2024]
Abstract
Trained immunity is mechanistically defined as the metabolically and epigenetically mediated long-term functional adaptation of the innate immune system, characterized by a heightened response to a secondary stimulation. Given appropriate activation, trained immunity represents an attractive anti-infective therapeutic target. Nevertheless, excessive immune response and subsequent inflammatory cascades may contribute to pathological tissue damage, indicating that the negative impacts of trained immunity appear to be significant. In this study, we show that innate immune responses such as the production of extracellular traps, pro-inflammatory cytokines, and autophagy-related proteins were markedly augmented in trained BMDMs. Furthermore, heat-killed C. albicans priming promotes the activation of the AIM2 inflammasome, and AIM2-/- mice exhibit impaired memory response induced by heat-killed C. albicans. Therefore, we establish that the AIM2 inflammasome is involved in trained immunity and emerges as a promising therapeutic target for potentially deleterious effects. Dihydroartemisinin can inhibit the memory response induced by heat-killed C. albicans through modulation of mTOR signaling and the AIM2 inflammasome. The findings suggest that dihydroartemisinin can reduce the induction of trained immunity by heat-killed C. albicans in C57BL/6 mice. Dihydroartemisinin is one such therapeutic intervention that has the potential to treat of diseases characterized by excessive trained immunity.
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Affiliation(s)
- Yu Gao
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhen-Zhen Liu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jia-Bao Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Cheng-Kai Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jian-Gang Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiao-Qi Lin
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Qi Yin
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Wei Chen
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China.
| | - Yong-Jun Yang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, China.
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Goli VVN, Tatineni S, Hani U, Ghazwani M, Talath S, Sridhar SB, Alhamhoom Y, Fatima F, Osmani RAM, Shivaswamy U, Chandrasekaran V, Gurupadayya B. Pharmacokinetics and Pharmacodynamics of a Nanostructured Lipid Carrier Co-Encapsulating Artemether and miRNA for Mitigating Cerebral Malaria. Pharmaceuticals (Basel) 2024; 17:466. [PMID: 38675426 PMCID: PMC11053970 DOI: 10.3390/ph17040466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 03/27/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Cerebral malaria (CM), a severe neurological pathology caused by Plasmodium falciparum infection, poses a significant global health threat and has a high mortality rate. Conventional therapeutics cannot cross the blood-brain barrier (BBB) efficiently. Therefore, finding effective treatments remains challenging. The novelty of the treatment proposed in this study lies in the feasibility of intranasal (IN) delivery of the nanostructured lipid carrier system (NLC) combining microRNA (miRNA) and artemether (ARM) to enhance bioavailability and brain targeting. The rational use of NLCs and RNA-targeted therapeutics could revolutionize the treatment strategies for CM management. This study can potentially address the challenges in treating CM, allowing drugs to pass through the BBB. The NLC formulation was developed by a hot-melt homogenization process utilizing 3% (w/w) precirol and 1.5% (w/v) labrasol, resulting in particles with a size of 94.39 nm. This indicates an effective delivery to the brain via IN administration. The results further suggest the effective intracellular delivery of encapsulated miRNAs in the NLCs. Investigations with an experimental cerebral malaria mouse model showed a reduction in parasitaemia, preservation of BBB integrity, and reduced cerebral haemorrhages with the ARM+ miRNA-NLC treatment. Additionally, molecular discoveries revealed that nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX2) and Interleukin-6 (IL-6) levels were reduced in the treated groups in comparison to the CM group. These results support the use of nanocarriers for IN administration, offering a viable method for mitigating CM through the increased bioavailability of therapeutics. Our findings have far-reaching implications for future research and personalized therapy.
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Affiliation(s)
- Veera Venkata Nishanth Goli
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Shivarathreeshwara Nagara, Mysuru 570015, India; (V.V.N.G.); (S.T.)
| | - Spandana Tatineni
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Shivarathreeshwara Nagara, Mysuru 570015, India; (V.V.N.G.); (S.T.)
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia; (U.H.); (M.G.); (Y.A.)
| | - Mohammed Ghazwani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia; (U.H.); (M.G.); (Y.A.)
| | - Sirajunisa Talath
- Department of Pharmaceutical Chemistry, RAK College of Pharmacy, RAK Medical and Health Sciences University, Ras Al Khaimah 11172, United Arab Emirates;
| | - Sathvik Belagodu Sridhar
- Department of Clinical Pharmacy & Pharmacology, RAK College of Pharmaceutical Sciences, RAK Medical and Health Sciences University, Ras Al Khaimah 11172, United Arab Emirates;
| | - Yahya Alhamhoom
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia; (U.H.); (M.G.); (Y.A.)
| | - Farhat Fatima
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Riyaz Ali M. Osmani
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Shivarathreeshwara Nagara, Mysuru 570015, India;
| | | | - Vichitra Chandrasekaran
- Department of Pharmacology, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Shivarathreeshwara Nagara, Mysuru 570015, India;
| | - Bannimath Gurupadayya
- Department of Pharmaceutical Chemistry, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Shivarathreeshwara Nagara, Mysuru 570015, India; (V.V.N.G.); (S.T.)
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Rathi K, Shukla M, Hassam M, Shrivastava R, Rawat V, Prakash Verma V. Recent advances in the synthesis and antimalarial activity of 1,2,4-trioxanes. Bioorg Chem 2024; 143:107043. [PMID: 38134523 DOI: 10.1016/j.bioorg.2023.107043] [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: 09/20/2023] [Revised: 11/29/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
The increasing resistance of various malarial parasite strains to drugs has made the production of a new, rapid-acting, and efficient antimalarial drug more necessary, as the demand for such drugs is growing rapidly. As a major global health concern, various methods have been implemented to address the problem of drug resistance, including the hybrid drug concept, combination therapy, the development of analogues of existing medicines, and the use of drug resistance reversal agents. Artemisinin and its derivatives are currently used against multidrug- resistant P. falciparum species. However, due to its natural origin, its use has been limited by its scarcity in natural resources. As a result, finding a substitute becomes more crucial, and the peroxide group in artemisinin, responsible for the drugs biological action in the form of 1,2,4-trioxane, may hold the key to resolving this issue. The literature suggests that 1,2,4-trioxanes have the potential to become an alternative to current malaria drugs, as highlighted in this review. This is why 1,2,4-trioxanes and their derivatives have been synthesized on a large scale worldwide, as they have shown promising antimalarial activity in vivo and in vitro against Plasmodium species. Consequently, the search for a more convenient, environment friendly, sustainable, efficient, and effective synthetic pathway for the synthesis of 1,2,4-trioxanes continues. The aim of this work is to provide a comprehensive analysis of the synthesis and mechanism of action of 1,2,4-trioxanes. This systematic review highlights the most recent summaries of derivatives of 1,2,4-trioxane compounds and dimers with potential antimalarial activity from January 1988 to 2023.
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Affiliation(s)
- Komal Rathi
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | - Monika Shukla
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India
| | | | - Rahul Shrivastava
- Department of Chemistry, Manipal University Jaipur, Jaipur (Rajasthan), VPO- Dehmi-Kalan, Off Jaipur-Ajmer Express Way, Jaipur, Rajasthan 30300, India
| | - Varun Rawat
- School of Chemistry, Tel Aviv University, Tel Aviv 6997801, Israel.
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Banasthali Newai 304022, Rajasthan, India.
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Plasticity towards Rigidity: A Macrophage Conundrum in Pulmonary Fibrosis. Int J Mol Sci 2022; 23:ijms231911443. [PMID: 36232756 PMCID: PMC9570276 DOI: 10.3390/ijms231911443] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive, chronic, and ultimately fatal diffuse parenchymal lung disease. The molecular mechanisms of fibrosis in IPF patients are not fully understood and there is a lack of effective treatments. For decades, different types of drugs such as immunosuppressants and antioxidants have been tested, usually with unsuccessful results. Although two antifibrotic drugs (Nintedanib and Pirfenidone) are approved and used for the treatment of IPF, side effects are common, and they only slow down disease progression without improving patients’ survival. Macrophages are central to lung homeostasis, wound healing, and injury. Depending on the stimulus in the microenvironment, macrophages may contribute to fibrosis, but also, they may play a role in the amelioration of fibrosis. In this review, we explore the role of macrophages in IPF in relation to the fibrotic processes, epithelial–mesenchymal transition (EMT), and their crosstalk with resident and recruited cells and we emphasized the importance of macrophages in finding new treatments.
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