1
|
Tandon A, Harioudh MK, Verma NK, Saroj J, Gupta A, Pant G, Tripathi JK, Kumar A, Kumari T, Tripathi AK, Mitra K, Ghosh JK. Characterization of a Myeloid Differentiation Factor 2-Derived Peptide that Facilitates THP-1 Macrophage-Mediated Phagocytosis of Gram-Negative Bacteria. ACS Infect Dis 2024; 10:845-857. [PMID: 38363869 DOI: 10.1021/acsinfecdis.3c00274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
Myeloid differentiation factor 2 (MD2), the TLR4 coreceptor, has been shown to possess opsonic activity and has been implicated in phagocytosis and intracellular killing of Gram-negative bacteria. However, any MD2 protein segment involved in phagocytosis of Gram-negative bacteria is not yet known. A short synthetic MD2 segment, MD54 (amino acid regions 54 to 69), was shown to interact with a Gram-negative bacterial outer membrane component, LPS, earlier. Furthermore, the MD54 peptide induced aggregation of LPS and facilitated its internalization in THP-1 cells. Currently, it has been investigated if MD2-derived MD54 possesses any opsonic property and role in phagocytosis of Gram-negative bacteria. Remarkably, we observed that MD54 facilitated agglutination of Gram-negative bacteria, Escherichia coli (ATCC 25922) and Pseudomonas aeruginosa (ATCC BAA-427), but not of Gram-positive bacteria, Bacillus subtilis (ATCC 6633) and Staphylococcus aureus (ATCC 25923). The MD54-opsonized Gram-negative bacteria internalized within PMA-treated THP-1 cells and were killed over a longer incubation period. However, both internalization and intracellular killing of the MD54-opsonized Gram-negative bacteria within THP-1 phagocytes were appreciably inhibited in the presence of a phagocytosis inhibitor, cytochalasin D. Furthermore, MD54 facilitated the clearance of Gram-negative bacteria E. coli (ATCC 25922) and P. aeruginosa (ATCC BAA-427) from the infected BALB/c mice whereas an MD54 analog, MMD54, was inactive. Overall, for the first time, the results revealed that a short MD2-derived peptide can specifically agglutinate Gram-negative bacteria, act as an opsonin for these bacteria, and facilitate their phagocytosis by THP-1 phagocytes. The results suggest that the MD54 segment could have a crucial role in MD2-mediated host-pathogen interaction involving the Gram-negative bacteria.
Collapse
Affiliation(s)
- Anshika Tandon
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Munesh Kumar Harioudh
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Neeraj Kumar Verma
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Jyotshana Saroj
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| | - Arvind Gupta
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| | - Garima Pant
- Electron Microscopy Unit, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Jitendra Kumar Tripathi
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Amit Kumar
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Tripti Kumari
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Amit Kumar Tripathi
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Kalyan Mitra
- Electron Microscopy Unit, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
| | - Jimut Kanti Ghosh
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226 031, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| |
Collapse
|
2
|
Ali M, Kumari T, Gupta A, Akhtar S, Verma RD, Ghosh JK. Identification of a 10-mer peptide from the death domain of MyD88 which attenuates inflammation and insulin resistance and improves glucose metabolism. Biochem J 2024; 481:191-218. [PMID: 38224573 DOI: 10.1042/bcj20230369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
Insulin resistance (IR) is the key pathophysiological cause of type 2 diabetes, and inflammation has been implicated in it. The death domain (DD) of the adaptor protein, MyD88 plays a crucial role in the transduction of TLR4-associated inflammatory signal. Herein, we have identified a 10-residue peptide (M10), from the DD of MyD88 which seems to be involved in Myddosome formation. We hypothesized that M10 could inhibit MyD88-dependent TLR4-signaling and might have effects on inflammation-associated IR. Intriguingly, 10-mer M10 showed oligomeric nature and reversible self-assembly property indicating the peptide's ability to recognize its own amino acid sequence. M10 inhibited LPS-induced nuclear translocation of NF-κB in L6 myotubes and also reduced LPS-induced IL-6 and TNF-α production in peritoneal macrophages of BALB/c mice. Remarkably, M10 inhibited IL-6 and TNF-α secretion in diabetic, db/db mice. Notably, M10 abrogated IR in insulin-resistant L6 myotubes, which was associated with an increase in glucose uptake and a decrease in Ser307-phosphorylation of IRS1, TNF-α-induced JNK activation and nuclear translocation of NF-κB in these cells. Alternate day dosing with M10 (10 and 20 mg/kg) for 30 days in db/db mice significantly lowered blood glucose and improved glucose intolerance after loading, 3.0 g/kg glucose orally. Furthermore, M10 increased insulin and adiponectin secretion in db/db mice. M10-induced glucose uptake in L6 myotubes involved the activation of PI3K/AKT/GLUT4 pathways. A scrambled M10-analog was mostly inactive. Overall, the results show the identification of a 10-mer peptide from the DD of MyD88 with anti-inflammatory and anti-diabetic properties, suggesting that targeting of TLR4-inflammatory pathway, could lead to the discovery of molecules against IR and diabetes.
Collapse
Affiliation(s)
- Mehmood Ali
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002 India
| | - Tripti Kumari
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
| | - Arvind Gupta
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002 India
| | - Sariyah Akhtar
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
| | - Rahul Dev Verma
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002 India
| | - Jimut Kanti Ghosh
- Biochemistry and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226 031 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002 India
| |
Collapse
|
3
|
Jha V, Xiong B, Kumari T, Brown G, Wang J, Kim K, Lee J, Asquith N, Gallagher J, Asherman L, Lambert T, Bai Y, Du X, Min JK, Sah R, Javaheri A, Razani B, Lee JM, Italiano JE, Cho J. A Critical Role for ERO1α in Arterial Thrombosis and Ischemic Stroke. Circ Res 2023; 132:e206-e222. [PMID: 37132383 PMCID: PMC10213138 DOI: 10.1161/circresaha.122.322473] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 04/12/2023] [Indexed: 05/04/2023]
Abstract
BACKGROUND Platelet adhesion and aggregation play a crucial role in arterial thrombosis and ischemic stroke. Here, we identify platelet ERO1α (endoplasmic reticulum oxidoreductase 1α) as a novel regulator of Ca2+ signaling and a potential pharmacological target for treating thrombotic diseases. METHODS Intravital microscopy, animal disease models, and a wide range of cell biological studies were utilized to demonstrate the pathophysiological role of ERO1α in arteriolar and arterial thrombosis and to prove the importance of platelet ERO1α in platelet activation and aggregation. Mass spectrometry, electron microscopy, and biochemical studies were used to investigate the molecular mechanism. We used novel blocking antibodies and small-molecule inhibitors to study whether ERO1α can be targeted to attenuate thrombotic conditions. RESULTS Megakaryocyte-specific or global deletion of Ero1α in mice similarly reduced platelet thrombus formation in arteriolar and arterial thrombosis without affecting tail bleeding times and blood loss following vascular injury. We observed that platelet ERO1α localized exclusively in the dense tubular system and promoted Ca2+ mobilization, platelet activation, and aggregation. Platelet ERO1α directly interacted with STIM1 (stromal interaction molecule 1) and SERCA2 (sarco/endoplasmic reticulum Ca2+-ATPase 2) and regulated their functions. Such interactions were impaired in mutant STIM1-Cys49/56Ser and mutant SERCA2-Cys875/887Ser. We found that ERO1α modified an allosteric Cys49-Cys56 disulfide bond in STIM1 and a Cys875-Cys887 disulfide bond in SERCA2, contributing to Ca2+ store content and increasing cytosolic Ca2+ levels during platelet activation. Inhibition of Ero1α with small-molecule inhibitors but not blocking antibodies attenuated arteriolar and arterial thrombosis and reduced infarct volume following focal brain ischemia in mice. CONCLUSIONS Our results suggest that ERO1α acts as a thiol oxidase for Ca2+ signaling molecules, STIM1 and SERCA2, and enhances cytosolic Ca2+ levels, promoting platelet activation and aggregation. Our study provides evidence that ERO1α may be a potential target to reduce thrombotic events.
Collapse
Affiliation(s)
- Vishwanath Jha
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Bei Xiong
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, P.R. China
| | - Tripti Kumari
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Gavriel Brown
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jinzhi Wang
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Kyungho Kim
- Korean Medicine-Application Center, Korea Institute of Oriental Medicine, Daegu, Republic of Korea
| | - Jingu Lee
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nathan Asquith
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA 02115, USA
| | - John Gallagher
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lillian Asherman
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Taylor Lambert
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Yanyan Bai
- Department of Pharmacology and Regenerative Medicine, The University of Illinois at Chicago College of Medicine, IL 60612, USA
| | - Xiaoping Du
- Department of Pharmacology and Regenerative Medicine, The University of Illinois at Chicago College of Medicine, IL 60612, USA
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Rajan Sah
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- John Cochran VA Medical Center, St. Louis, MO 63106, USA
| | - Ali Javaheri
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Babak Razani
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- John Cochran VA Medical Center, St. Louis, MO 63106, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jin-Moo Lee
- Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, MO 63110, USA
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Biomedical Engineering, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Joseph E. Italiano
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
- Vascular Biology Program, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Jaehyung Cho
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| |
Collapse
|
4
|
Sinha D, Datta S, Mishra R, Agarwal P, Kumari T, Adeyemi SB, Kumar Maurya A, Ganguly S, Atique U, Seal S, Kumari Gupta L, Chowdhury S, Chen JT. Negative Impacts of Arsenic on Plants and Mitigation Strategies. Plants (Basel) 2023; 12:plants12091815. [PMID: 37176873 PMCID: PMC10181087 DOI: 10.3390/plants12091815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Arsenic (As) is a metalloid prevalent mainly in soil and water. The presence of As above permissible levels becomes toxic and detrimental to living organisms, therefore, making it a significant global concern. Humans can absorb As through drinking polluted water and consuming As-contaminated food material grown in soil having As problems. Since human beings are mobile organisms, they can use clean uncontaminated water and food found through various channels or switch from an As-contaminated area to a clean area; but plants are sessile and obtain As along with essential minerals and water through roots that make them more susceptible to arsenic poisoning and consequent stress. Arsenic and phosphorus have many similarities in terms of their physical and chemical characteristics, and they commonly compete to cause physiological anomalies in biological systems that contribute to further stress. Initial indicators of arsenic's propensity to induce toxicity in plants are a decrease in yield and a loss in plant biomass. This is accompanied by considerable physiological alterations; including instant oxidative surge; followed by essential biomolecule oxidation. These variables ultimately result in cell permeability and an electrolyte imbalance. In addition, arsenic disturbs the nucleic acids, the transcription process, and the essential enzymes engaged with the plant system's primary metabolic pathways. To lessen As absorption by plants, a variety of mitigation strategies have been proposed which include agronomic practices, plant breeding, genetic manipulation, computer-aided modeling, biochemical techniques, and the altering of human approaches regarding consumption and pollution, and in these ways, increased awareness may be generated. These mitigation strategies will further help in ensuring good health, food security, and environmental sustainability. This article summarises the nature of the impact of arsenic on plants, the physio-biochemical mechanisms evolved to cope with As stress, and the mitigation measures that can be employed to eliminate the negative effects of As.
Collapse
Affiliation(s)
- Dwaipayan Sinha
- Department of Botany, Government General Degree College, Mohanpur 721436, Paschim Medinipur, West Bengal, India
| | - Soumi Datta
- Bioactive Natural Product Laboratory, School of Interdisciplinary Sciences and Technology, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
| | - Reema Mishra
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Preeti Agarwal
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Tripti Kumari
- Department of Chemistry, Gargi College, University of Delhi, New Delhi 110049, India
| | - Sherif Babatunde Adeyemi
- Ethnobotany/Phytomedicine Laboratory, Department of Plant Biology, Faculty of Life Sciences, University of Ilorin, Ilorin PMB 1515, Kwara State, Nigeria
| | - Arun Kumar Maurya
- Department of Botany, Multanimal Modi College, Modinagar, Ghaziabad 201204, Uttar Pradesh, India
| | - Sharmistha Ganguly
- University Department of Botany, Ranchi University, Ranchi 834008, Jharkhand, India
| | - Usman Atique
- Department of Bioscience and Biotechnology, College of Biological Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sanchita Seal
- Department of Botany, Polba Mahavidyalaya, Polba 712148, West Bengal, India
| | - Laxmi Kumari Gupta
- Bioprocess Development Laboratory, Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India
| | - Shahana Chowdhury
- Department of Biotechnology, Faculty of Engineering Sciences, German University Bangladesh, TNT Road, Telipara, Chandona Chowrasta, Gazipur 1702, Bangladesh
| | - Jen-Tsung Chen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811, Taiwan
| |
Collapse
|
5
|
Kumari T, Verma DP, Kuldeep J, Dhanabal VB, Verma NK, Sahai R, Tripathi AK, Saroj J, Ali M, Mitra K, Siddiqi MI, Bhattacharjya S, Ghosh JK. 10-Residue MyD88-Peptide Adopts β-Sheet Structure, Self-Assembles, Binds to Lipopolysaccharides, and Rescues Mice from Endotoxin-Mediated Lung-Infection and Death. ACS Chem Biol 2022; 17:3420-3434. [PMID: 36367958 DOI: 10.1021/acschembio.2c00569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Naturally occurring cationic antimicrobial peptides (AMPs) mostly adopt α-helical structures in bacterial membrane mimetic environments. To explore the design of novel β-sheet AMPs, we identified two short cationic amphipathic β-strand segments from the crystal structure of the innate immune protein, MyD88. Interestingly, of these, the 10-residue arginine-valine-rich synthetic MyD88-segment, KRCRRMVVVV (M3), exhibited β-sheet structure when bound to the outer membrane Gram-negative bacterial component, LPS. Isothermal titration calorimetric data showed that M3 bound to LPS with high affinity, and the interaction was hydrophobic in nature. Supporting these observations, computational studies indicated strong interactions of multiple and consecutive valine residues of M3 with the acyl chain of LPS. Moreover, M3 adopted nanosheet and nanofibrillar structure in 25% acetonitrile/water and isopropanol, respectively. M3 showed substantial antibacterial activities against both Gram-positive and Gram-negative bacteria which it appreciably retained in the presence of human serum and physiological salts. M3 was non-hemolytic against human red blood cells and non-cytotoxic to 3T3 cells up to 200 μM and to mice in vivo at a dose of 40 mg/kg. Furthermore, M3 neutralized LPS-induced pro-inflammatory responses in THP-1 cells and rat bone marrow-derived macrophages. Consequently, M3 attenuated LPS-mediated lung inflammation in mice and rescued them (80% survival at 10 mg/kg dose) against a lethal dose of LPS. The results demonstrate the identification of a 10-mer LPS-interacting, β-sheet peptide from MyD88 with the ability to form nanostructures and in vivo activity against LPS challenge in mice. The identified M3-template provides scope for designing novel bioactive peptides with β-sheet structures and self-assembling properties.
Collapse
Affiliation(s)
- Tripti Kumari
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India
| | | | - Jitendra Kuldeep
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India
| | | | - Neeraj Kumar Verma
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India
| | - Rohit Sahai
- Electron Microscopy Unit, CDRI, Lucknow 226031, India
| | | | - Jyotshana Saroj
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Mehmood Ali
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Kalyan Mitra
- Electron Microscopy Unit, CDRI, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Mohammad Imran Siddiqi
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Surajit Bhattacharjya
- School of Biological Sciences, Nanyang Technological University, Singapore 639798, Singapore
| | - Jimut Kanti Ghosh
- Biochemistry and Structural Biology Division, CDRI, Lucknow 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| |
Collapse
|
6
|
Kumari S, Dash PK, Kumari T, Guo ML, Ghosh JK, Buch SJ, Tripathi RK. HIV-1 Nef hijacks both exocytic and endocytic pathways of host intracellular trafficking through differential regulation of Rab GTPases. Biol Cell 2022; 114:276-292. [PMID: 35713972 DOI: 10.1111/boc.202100027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 12/01/2022]
Abstract
HIV-1 Nef regulates several cellular functions in an infected cell which results in viral persistence and AIDS pathogenesis. The currently understood molecular mechanism(s) underlying Nef-dependent cellular function(s) are unable to explain how events are coordinately regulated in the host cell. Intracellular membranous trafficking maintains cellular homeostasis and is regulated by Rab GTPases - a member of the Ras superfamily. In the current study, we tried to decipher the role of Nef on the Rab GTPases-dependent complex and vesicular trafficking. Expression profiling of Rabs in Nef-expressing cells showed that Nef differentially regulates the expression of individual Rabs in a cell-specific manner. Further analysis of Rabs in HIV-1NL4-3 or ΔNef infected cells demonstrated that the Nef protein is responsible for variation in Rabs expression. Using a panel of competitive peptide inhibitors against Nef, we identified the critical domain of HIV-1 Nef involved in modulation of Rabs expression. The molecular function of Nef-mediated upregulation of Rab5 and Rab7 and downregulation of Rab11 increased the transport of SERINC5 from the cell surface to the lysosomal compartment. Moreover, the Nef-dependent increase in Rab27 expression assists exosome release. Reversal of Rabs expression using competitive inhibitors against Nef and manipulation of Rabs expression reduced viral release and infectivity of progeny virions. Overall, this study demonstrates that Nef differentially regulates the expression of Rab proteins in HIV-1 infected cells to hijack the host intracellular trafficking, which augments viral replication and HIV-1 pathogenesis. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Sushila Kumari
- Virus Research and Therapeutics Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Prasanta K Dash
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Tripti Kumari
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Ming-Lei Guo
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| | - Shilpa J Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, USA
| | - Raj Kamal Tripathi
- Virus Research and Therapeutics Division, CSIR-Central Drug Research Institute, Sector-10, Janakipuram Extension, Sitapur Road, Lucknow, U.P., 226031, India
| |
Collapse
|
7
|
Li J, Kumari T, Barazia A, Jha V, Jeong SY, Olson A, Kim M, Lee BK, Manickam V, Song Z, Clemens R, Razani B, Kim J, Dinauer MC, Cho J. Neutrophil DREAM promotes neutrophil recruitment in vascular inflammation. J Exp Med 2022; 219:e20211083. [PMID: 34751735 PMCID: PMC8719643 DOI: 10.1084/jem.20211083] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/21/2021] [Accepted: 10/19/2021] [Indexed: 01/02/2023] Open
Abstract
The interaction between neutrophils and endothelial cells is critical for the pathogenesis of vascular inflammation. However, the regulation of neutrophil adhesive function remains not fully understood. Intravital microscopy demonstrates that neutrophil DREAM promotes neutrophil recruitment to sites of inflammation induced by TNF-α but not MIP-2 or fMLP. We observe that neutrophil DREAM represses expression of A20, a negative regulator of NF-κB activity, and enhances expression of pro-inflammatory molecules and phosphorylation of IκB kinase (IKK) after TNF-α stimulation. Studies using genetic and pharmacologic approaches reveal that DREAM deficiency and IKKβ inhibition significantly diminish the ligand-binding activity of β2 integrins in TNF-α-stimulated neutrophils or neutrophil-like HL-60 cells. Neutrophil DREAM promotes degranulation through IKKβ-mediated SNAP-23 phosphorylation. Using sickle cell disease mice lacking DREAM, we show that hematopoietic DREAM promotes vaso-occlusive events in microvessels following TNF-α challenge. Our study provides evidence that targeting DREAM might be a novel therapeutic strategy to reduce excessive neutrophil recruitment in inflammatory diseases.
Collapse
Affiliation(s)
- Jing Li
- Department of Pharmacology, University of Illinois at Chicago College of Medicine, Chicago, IL
| | - Tripti Kumari
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Andrew Barazia
- Department of Pharmacology, University of Illinois at Chicago College of Medicine, Chicago, IL
| | - Vishwanath Jha
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Si-Yeon Jeong
- Department of Pharmacology, University of Illinois at Chicago College of Medicine, Chicago, IL
| | - Amber Olson
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Mijeong Kim
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX
| | - Bum-Kyu Lee
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX
| | - Vijayprakash Manickam
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
| | - Zhimin Song
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Regina Clemens
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Babak Razani
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO
- John Cochran VA Medical Center, St. Louis, MO
| | - Jonghwan Kim
- Department of Molecular Biosciences, University of Texas at Austin, Austin, TX
| | - Mary C. Dinauer
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| | - Jaehyung Cho
- Department of Pharmacology, University of Illinois at Chicago College of Medicine, Chicago, IL
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, MO
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO
| |
Collapse
|
8
|
Abstract
Significance: Protein disulfide isomerase (PDI) and endoplasmic reticulum oxidoreductase 1 (ERO1) are crucial for oxidative protein folding in the endoplasmic reticulum (ER). These enzymes are frequently overexpressed and secreted, and they contribute to the pathology of neurodegenerative, cardiovascular, and metabolic diseases. Recent Advances: Tissue-specific knockout mouse models and pharmacologic inhibitors have been developed to advance our understanding of the cell-specific functions of PDI and ERO1. In addition to their roles in protecting cells from the unfolded protein response and oxidative stress, recent studies have revealed that PDI and ERO1 also function outside of the cells. Critical Issues: Despite the well-known contributions of PDI and ERO1 to specific disease pathology, the detailed molecular and cellular mechanisms underlying these activities remain to be elucidated. Further, although PDI and ERO1 inhibitors have been identified, the results from previous studies require careful evaluation, as many of these agents are not selective and may have significant cytotoxicity. Future Directions: The functions of PDI and ERO1 in the ER have been extensively studied. Additional studies will be required to define their functions outside the ER.
Collapse
Affiliation(s)
- Vishwanath Jha
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Tripti Kumari
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Vijayprakash Manickam
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Zahra Assar
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Kirk L Olson
- Cayman Chemical Company, Inc., Ann Arbor, Michigan, USA
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Jaehyung Cho
- Division of Hematology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA
| |
Collapse
|
9
|
Singh AK, Bhakat C, Kumari T, Mandal DK, Chatterjee A, Karunakaran M, Dutta TK. Influence of pre and postpartum alpha-tocopherol supplementation on milk yield, milk quality, and udder health of Jersey crossbred cows at tropical lower Gangetic region. Vet World 2020; 13:2006-2011. [PMID: 33132618 PMCID: PMC7566249 DOI: 10.14202/vetworld.2020.2006-2011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/28/2020] [Indexed: 12/04/2022] Open
Abstract
Background and Aim: Alpha-tocopherol supplementation influences milk yield, milk quality, and udder health of dairy cows, which needs to be investigated for Jersey crossbred cows at hot-humid climate. Therefore, the present study was framed with an objective to study the effect of pre and postpartum Alpha-tocopherol supplementation on milk yield, milk quality, and udder health status of Jersey crossbred cows at tropical climate. Materials and Methods: For this study, 19 similar parity, body condition score, and production level dairy animals were separated randomly into three groups, namely, Control, T1 and T2. Control group (no supplementation) was compared with two treatment groups, namely, T1 and T2. Supplementation of Alpha-tocopherol was done in concentrate fed to the animals (at 1 g/cow/day) 30 days prepartum to 30 days postpartum in T1 and 30 days prepartum to 60 days postpartum in T2 groups. Observations were taken for different parameters up to 5 months of lactation. Results: Statistically analyzed data revealed that overall significantly (p<0.01) more milk production was found in T2, followed by T1 than the control group. Overall significantly (p<0.01) lower somatic cell counts and modified California mastitis tests were recorded in T2, followed by T1 than the control group. Overall significantly (p<0.01), better milk quality in terms of methylene blue reduction test was found in T2, followed by T1 than control groups. Differences in the milk composition of all three groups were non-significant (p>0.05). Conclusion: Supplementation of Alpha-tocopherol during prepartum to initial lactation period may enhance milk yield, milk quality, and udder health status of Jersey crossbred cows at the tropical lower Gangetic region.
Collapse
Affiliation(s)
- Amit Kumar Singh
- Livestock Production Management Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Champak Bhakat
- Livestock Production Management Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Tripti Kumari
- Livestock Production Management Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Dilip Kumar Mandal
- Livestock Production Management Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Anupam Chatterjee
- Animal Nutrition Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Muthupalani Karunakaran
- Animal Reproduction Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| | - Tapas Kumar Dutta
- Animal Nutrition Section, ICAR-National Dairy Research Institute, Eastern Regional Station, Kalyani, West Bengal, India
| |
Collapse
|
10
|
Kumari T, Verma DP, Afshan T, Verma NK, Pant G, Ali M, Shukla PK, Mitra K, Ghosh JK. A Noncytotoxic Temporin L Analogue with In Vivo Antibacterial and Antiendotoxin Activities and a Nonmembrane-Lytic Mode of Action. ACS Infect Dis 2020; 6:2369-2385. [PMID: 32786286 DOI: 10.1021/acsinfecdis.0c00022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cytotoxic frog antimicrobial peptide Temporin L (TempL) is an attractive molecule for the design of lead antimicrobial agents due to its short size and versatile biological activities. However, noncytotoxic TempL variants with desirable biological activities have rarely been reported. TempL analogue Q3K,TempL is water-soluble and possesses a significant antiendotoxin property along with comparable cytotoxicity to TempL. A phenylalanine residue, located at the hydrophobic face of Q3K,TempL and the "d" position of its phenylalanine zipper sequence, was replaced with a cationic lysine residue. This analogue, Q3K,F8K,TempL, showed reduced hydrophobic moment and was noncytotoxic with lower antimicrobial activity. Interestingly, swapping between tryptophan at the fourth and serine at the sixth positions turned Q3K,F8K,TempL totally amphipathic as reflected by its helical wheel projection with clusters of hydrophobic and hydrophilic residues and the highest hydrophobic moment among these peptides. Surprisingly, this analogue, SW,Q3K,F8K,TempL, was as noncytotoxic as Q3K,F8K,TempL but showed augmented antimicrobial and antiendotoxin properties, comparable to that of TempL and Q3K,TempL. SW,Q3K,F8K,TempL exhibited appreciable survival of mice against P. aeruginosa infection and a lipopolysaccharide (LPS) challenge. Unlike TempL and Q3K,TempL, SW,Q3K,F8K,TempL adopted an unordered secondary structure in bacterial membrane mimetic lipid vesicles and did not permeabilize them or depolarize the bacterial membrane. Overall, the results demonstrate the design of a nontoxic TempL analogue that possesses clusters of hydrophobic and hydrophilic residues with impaired secondary structure and shows a nonmembrane-lytic mechanism and in vivo antiendotoxin and antimicrobial activities. This paradigm of design of antimicrobial peptide with clusters of hydrophobic and hydrophilic residues and high hydrophobic moment but low secondary structure could be attempted further.
Collapse
Affiliation(s)
- Tripti Kumari
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Devesh Pratap Verma
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Tayyaba Afshan
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Neeraj Kumar Verma
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Garima Pant
- Electron Microscopy Unit, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Mehmood Ali
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - P. K. Shukla
- Microbiology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Kalyan Mitra
- Electron Microscopy Unit, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow, Uttar Pradesh 226 031, India
| |
Collapse
|
11
|
Sayeed M, Gautam S, Verma DP, Afshan T, Kumari T, Srivastava AK, Ghosh JK. A collagen domain-derived short adiponectin peptide activates APPL1 and AMPK signaling pathways and improves glucose and fatty acid metabolisms. J Biol Chem 2018; 293:13509-13523. [PMID: 29991592 DOI: 10.1074/jbc.ra118.001801] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 07/02/2018] [Indexed: 12/13/2022] Open
Abstract
Adiponectin is a fat tissue-derived adipokine with beneficial effects against diabetes, cardiovascular diseases, and cancer. Accordingly, adiponectin-mimetic molecules possess significant pharmacological potential. Oligomeric states of adiponectin appear to determine its biological activity. We identified a highly conserved, 13-residue segment (ADP-1) from adiponectin's collagen domain, which comprises GXXG motifs and has one asparagine and two histidine residues that assist in oligomeric protein assembly. We therefore hypothesized that ADP-1 promotes oligomeric assembly and thereby mediates potential metabolic effects. We observed here that ADP-1 is stable in human serum and oligomerizes in aqueous environments. We also found that ADP-1 activates AMP-activated protein kinase (AMPK) in an adaptor protein, phosphotyrosine interacting with PH domain and leucine zipper 1 (APPL1)-dependent pathway and stimulates glucose uptake in rat skeletal muscle cells (L6 myotubes). ADP-1-induced glucose transport coincided with ADP-1-induced biosynthesis of glucose transporter 4 and its translocation to the plasma membrane. ADP-1 induced an interaction between APPL1 and the small GTPase Rab5, resulting in AMPK phosphorylation, in turn leading to phosphorylation of p38 mitogen-activated protein kinase (MAPK), acetyl-CoA carboxylase, and peroxisome proliferator-activated receptor α. Similar to adiponectin, ADP-1 increased the expression of the adiponectin receptor 1 (AdipoR1) gene. Of note, ADP-1 decreased blood glucose levels and enhanced insulin production in pancreatic β cells in db/db mice. Further, ADP-1 beneficially affected lipid metabolism by enhancing lipid globule formation in mouse 3T3-L1 adipocytes. To our knowledge, this is the first report on identification of a short peptide from adiponectin with positive effects on glucose or fatty acid metabolism.
Collapse
Affiliation(s)
- Mohd Sayeed
- From the Molecular and Structural Biology Division and
| | - Sudeep Gautam
- the Biochemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow-226 031, India
| | | | | | - Tripti Kumari
- From the Molecular and Structural Biology Division and
| | - Arvind Kumar Srivastava
- the Biochemistry Division, CSIR-Central Drug Research Institute, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow-226 031, India
| | | |
Collapse
|
12
|
Issar U, Kumari T, Arora R, Kakkar R. Conformational properties of DNA minor groove binder Hoechst 33258 in gas phase and in aqueous solution. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
13
|
Kumari T, Issar U, Kakkar R. Docking Modes of BB-3497 into the PDF Active Site – A Comparison of the Pure MM and QM/MM Based Docking Strategies. Curr Comput Aided Drug Des 2015; 10:315-26. [DOI: 10.2174/157340991004150518145522] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/23/2014] [Accepted: 07/15/2014] [Indexed: 11/22/2022]
|