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Mukherjee MD, Kumar A, Solanki PR, Verma D, Yadav AK, Chaudhary N, Kumar P. Recent Advances in Understanding SARS-CoV-2 Infection and Updates on
Potential Diagnostic and Therapeutics for COVID-19. CORONAVIRUSES 2022; 3. [DOI: 10.2174/2666796703666220302143102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 11/09/2021] [Accepted: 12/13/2021] [Indexed: 09/25/2023]
Abstract
Abstract:
A more focused approach is needed to understand the SARS-CoV-2 virulence, structure, and
genomics to devise more effective diagnostic and treatment interventions as this virus can evade the immune
attack and causes life-threatening complications such as cytokine storm. The spread of the virus is
still amplifying and causing thousands of new cases worldwide. It is essential to review current diagnostics
and treatment approaches to pave the way to correct or modify our current practices to make more
effective interventions against COVID-19. COVID-19 vaccine development has moved at a breakneck
pace since the outbreak began, utilizing practically all possible platforms or tactics to ensure the success
of vaccines. A total of 42 vaccine candidates have already entered clinical trials, including promising
results from numerous vaccine candidates in phase 1 or phase 2 trials. Further, many existing drugs are
being explored on broad-spectrum antiviral medications for their use in clinical recovery against COVID-
19. The present review attempts to re-examine the SARS-CoV-2 structure, its viral life cycle, clinical
symptoms and pathogenesis, mode of transmission, diagnostics, and treatment strategies that may be useful
for resorting to more effective approaches for controlling COVID-19. Various antiviral drugs and
vaccination strategies with their strengths and weaknesses are also discussed in the paper to augment our
understanding of COVID-19 management.
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Affiliation(s)
- Maumita D. Mukherjee
- Amity Institute of Applied Sciences, Amity University, Noida, Uttar Pradesh-201313, India
| | - Anil Kumar
- National Institute of Immunology, New Delhi-110067, India
| | - Pratima R. Solanki
- Nano-Bio Laboratory, Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi-110067, India
| | - Damini Verma
- Nano-Bio Laboratory, Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi-110067, India
- Amity Institute of Applied Sciences, Amity University, Noida, Uttar Pradesh-201313, India
| | - Amit K. Yadav
- Nano-Bio Laboratory, Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi-110067, India
| | - Navneet Chaudhary
- Department of Biotechnology,
Delhi Technological University, Delhi-110042, India
| | - Pramod Kumar
- Sri Aurobindo College, Delhi University, New Delhi-110017,
India
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Du J, Chen D, Yu B, He J, Yu J, Mao X, Luo Y, Zheng P, Luo J. L-Leucine Promotes STAT1 and ISGs Expression in TGEV-Infected IPEC-J2 Cells via mTOR Activation. Front Immunol 2021; 12:656573. [PMID: 34367129 PMCID: PMC8339710 DOI: 10.3389/fimmu.2021.656573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/30/2021] [Indexed: 12/18/2022] Open
Abstract
L-leucine (Leu), as one of the effective amino acids to activate the mTOR signaling pathway, can alleviate transmissible gastroenteritis virus (TGEV) infection. However, the underlying mechanism by which Leu alleviates the virus infection has not been fully characterized. In particular, how Leu impacts TGEV replication through mTOR signaling has yet to be elucidated. In the present study, we found that TGEV proliferated efficiently in intestinal porcine epithelial cells (IPEC-J2 cells) as evidenced by the increase in viral contents by flow cytometry, the inhibition of cell proliferation by CCK-8 assay as well as the reduction of PCNA level by western blot. Besides, western blot analysis showed that STAT1 expression was markedly reduced in TGEV-infected cells. The results of ELISA revealed the inhibition of ISGs (ISG56, MxA, and PKR) expressions by TGEV infection. TGEV-induced mTOR and its downstream p70 S6K and 4E-BP1, STAT1 and ISGs downregulation were blocked by an mTOR activator-MHY1485 but not by an mTOR inhibitor-RAPA. Concurrently, mTOR activation by MHY1485 reduced the contents of TGEV and vice versa. Furthermore, Leu reversed the inhibition of STAT1 and ISGs by activating mTOR and its downstream p70 S6K and 4E-BP1 in TEGV-infected cells. Our findings demonstrated that Leu promoted the expressions of STAT1 and ISGs via activating mTOR signaling in IPEC-J2 cells, aiming to prevent TGEV infection.
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Affiliation(s)
- Jian Du
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Jie Yu
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Xiangbing Mao
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
| | - Junqiu Luo
- Key Laboratory for Animal Disease-Resistance Nutrition, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, China
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Patra U, Mukhopadhyay U, Mukherjee A, Dutta S, Chawla-Sarkar M. Treading a HOSTile path: Mapping the dynamic landscape of host cell-rotavirus interactions to explore novel host-directed curative dimensions. Virulence 2021; 12:1022-1062. [PMID: 33818275 PMCID: PMC8023246 DOI: 10.1080/21505594.2021.1903198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Viruses are intracellular pathogens and are dependent on host cellular resources to carry out their cycles of perpetuation. Obtaining an integrative view of host-virus interaction is of utmost importance to understand the complex and dynamic interplay between viral components and host machineries. Besides its obvious scholarly significance, a comprehensive host-virus interaction profile also provides a platform where from host determinants of pro-viral and antiviral importance can be identified and further be subjected to therapeutic intervention. Therefore, adjunct to conventional methods of prophylactic vaccination and virus-directed antivirals, this host-targeted antiviral approach holds promising therapeutic potential. In this review, we present a comprehensive landscape of host cellular reprogramming in response to infection with rotavirus (RV) which causes profuse watery diarrhea in neonates and infants. In addition, an emphasis is given on how host determinants are either usurped or subverted by RV in course of infection and how therapeutic manipulation of specific host factors can effectively modulate the RV life cycle.
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Affiliation(s)
- Upayan Patra
- Division of Virology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Urbi Mukhopadhyay
- Division of Virology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Arpita Mukherjee
- Division of Virology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Shanta Dutta
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | - Mamta Chawla-Sarkar
- Division of Virology, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
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Ramezani A, Nikravesh H, Faghihloo E. The roles of FOX proteins in virus-associated cancers. J Cell Physiol 2018; 234:3347-3361. [PMID: 30362516 DOI: 10.1002/jcp.27295] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/31/2018] [Indexed: 12/22/2022]
Abstract
Forkhead box (FOX) proteins play a crucial role in regulating the expression of genes involved in multiple biological processes, such as metabolism, development, differentiation, proliferation, apoptosis, migration, invasion, and longevity. Deregulation of FOX proteins is commonly associated with cancer initiation, progression, and chemotherapeutic drug resistance in many human tumors. FOX proteins deregulate through genetic events and the perturbation of posttranslational modification. The purpose of the present review is to describe the deregulation of FOX proteins by oncoviruses. Oncoviruses utilize various mechanisms to deregulate FOX proteins, including alterations in posttranslational modifications, cellular localization independently of posttranslational modifications, virus-encoded miRNAs, activation or suppression of a series of cell signaling pathways. This deregulation can affect proliferation, metastasis, chemotherapy resistance, and immunosuppression in virus-induced cancers and help to chronic viral infection, development of gluconeogenic responses, and inflammation. Since the PI3K/Akt/mTOR signaling pathway is the upstream FOXO, suppressing it can cause FOXO function to return, and this can be one of the reasons for patients to recover from the infection of the viruses used to treat these inhibitors. Hence, FOX proteins could serve as prognosis markers and target therapy specifically in cancers caused by oncoviruses.
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Affiliation(s)
- Ali Ramezani
- Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hojatolla Nikravesh
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ebrahim Faghihloo
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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