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Yadav P, Rana K, Nardini V, Khan A, Pani T, Kar A, Jain D, Chakraborty R, Singh R, Jha SK, Mehta D, Sharma H, Sharma RD, Deo SVS, Sengupta S, Patil VS, Faccioli LH, Dasgupta U, Bajaj A. Engineered nanomicelles inhibit the tumour progression via abrogating the prostaglandin-mediated immunosuppression. J Control Release 2024; 368:548-565. [PMID: 38462044 DOI: 10.1016/j.jconrel.2024.03.009] [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: 07/30/2023] [Revised: 03/05/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
Cancer treatment is challenged due to immunosuppressive inflammatory tumour microenvironment (TME) caused by infiltration of tumour-promoting and inhibition of tumour-inhibiting immune cells. Here, we report the engineering of chimeric nanomicelles (NMs) targeting the cell proliferation using docetaxel (DTX) and inflammation using dexamethasone (DEX) that alters the immunosuppressive TME. We show that a combination of phospholipid-DTX conjugate and PEGylated-lipid-DEX conjugate can self-assemble to form sub-100 nm chimeric NMs (DTX-DEX NMs). Anti-cancer activities against syngeneic and xenograft mouse models showed that the DTX-DEX NMs are more effective in tumour regression, enhance the survival of mice over other treatment modes, and alter the tumour stroma. DTX-DEX NMs cause a significant reduction in myeloid-derived suppressor cells, alter the polarization of macrophages, and enhance the accumulation of cytotoxic CD4+ and CD8+ T cells in tumour tissues, along with alterations in cytokine expression. We further demonstrated that these DTX-DEX NMs inhibit the synthesis of prostaglandins, especially PGE2, by targeting the cyclooxygenase 2 that is partly responsible for immunosuppressive TME. Therefore, this study presents, for the first time, the engineering of lithocholic acid-derived chimeric NMs that affect the prostaglandin pathway, alter the TME, and mitigate tumour progression with enhanced mice survival.
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Affiliation(s)
- Poonam Yadav
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Kajal Rana
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Viviani Nardini
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av do Café, s.n, Ribeirão Preto 14040-903, SP, Brazil
| | - Ali Khan
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - Trishna Pani
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - Animesh Kar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Dolly Jain
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Ruchira Chakraborty
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Ragini Singh
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Somesh K Jha
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India
| | - Devashish Mehta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - Harsh Sharma
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - Ravi Datta Sharma
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - S V S Deo
- Department of Surgical Oncology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Sagar Sengupta
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India; National Institute of Biomedical Genomics, Post office- Netaji Subhas Sanatorium, Kalyani 741251, India
| | - Veena S Patil
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Lúcia Helena Faccioli
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av do Café, s.n, Ribeirão Preto 14040-903, SP, Brazil
| | - Ujjaini Dasgupta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Manesar, Gurgaon 122413, Haryana, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, 3(rd) Milestone Faridabad-Gurgaon Expressway, NCR Biotech Cluster, Faridabad 121001, Haryana, India.
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Kar R, Chattopadhyay S, Sharma A, Sharma K, Sinha S, Arimbasseri GA, Patil VS. Single-cell transcriptomic and T cell antigen receptor analysis of human cytomegalovirus (hCMV)-specific memory T cells reveals effectors and pre-effectors of CD8 + - and CD4 + -cytotoxic T cells. Immunology 2024. [PMID: 38501302 DOI: 10.1111/imm.13783] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 03/11/2024] [Indexed: 03/20/2024] Open
Abstract
Latent human cytomegalovirus (hCMV) infection can pose a serious threat of reactivation and disease occurrence in immune-compromised individuals. Although T cells are at the core of the protective immune response to hCMV infection, a detailed characterization of different T cell subsets involved in hCMV immunity is lacking. Here, in an unbiased manner, we characterized over 8000 hCMV-reactive peripheral memory T cells isolated from seropositive human donors, at a single-cell resolution by analysing their single-cell transcriptomes paired with the T cell antigen receptor (TCR) repertoires. The hCMV-reactive T cells were highly heterogeneous and consisted of different developmental and functional memory T cell subsets such as, long-term memory precursors and effectors, T helper-17, T regulatory cells (TREGs ) and cytotoxic T lymphocytes (CTLs) of both CD4 and CD8 origin. The hCMV-specific TREGs , in addition to being enriched for molecules known for their suppressive functions, showed enrichment for the interferon response signature gene sets. The hCMV-specific CTLs were of two types, the pre-effector- and effector-like. The co-clustering of hCMV-specific CD4-CTLs and CD8-CTLs in both pre-effector as well as effector clusters suggest shared transcriptomic signatures between them. The huge TCR clonal expansion of cytotoxic clusters suggests a dominant role in the protective immune response to CMV. The study uncovers the heterogeneity in the hCMV-specific memory T cells revealing many functional subsets with potential implications in better understanding of hCMV-specific T cell immunity. The data presented can serve as a knowledge base for designing vaccines and therapeutics.
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Affiliation(s)
- Raunak Kar
- Immunogenomics Lab, National Institute of Immunology, New Delhi, Delhi, India
| | | | - Anjali Sharma
- Department of Transfusion Medicine and Blood Bank, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, Delhi, India
| | - Kirti Sharma
- Immunogenomics Lab, National Institute of Immunology, New Delhi, Delhi, India
| | - Shreya Sinha
- Immunogenomics Lab, National Institute of Immunology, New Delhi, Delhi, India
| | | | - Veena S Patil
- Immunogenomics Lab, National Institute of Immunology, New Delhi, Delhi, India
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3
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Mannopantar SR, Patil VS, Prabhala P, Lalasangi AS, Kalasad MN, Kulkarni VK. Systematic Photophysical Interaction Studies Between Newly Synthesised Oxazole Derivatives and Silver Nanoparticles: Experimental and DFT Approach. J Fluoresc 2023:10.1007/s10895-023-03369-y. [PMID: 37589935 DOI: 10.1007/s10895-023-03369-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/24/2023] [Indexed: 08/18/2023]
Abstract
In this study, the photophysical properties of oxazole derivatives such as 5-(furan-2-yl) -4-tosyloxazole (OX-1) and 5-(2-bromothiazol-4-yl)-4-tosyloxazoles (OX-2) were investigated using theoretical and experimental techniques. The ground and excited state dipole moments were empirically obtained utilising the solvatochromic shift technique and several solvatochromic correlations such as Lippert's, Bakhshiev's, KawskiChamma- Viallet's, and solvent polarity equations. The ground state dipole moments, HOMO-LUMO and molecule electrostatic potential map were also computed using ab initio calculations and evaluated using Gaussian 09 W software. Furthermore, spectroscopic interactions between newly synthesised dyes (OX-1 and OX-2) and freshly synthesised silver nanoparticles (size 40 nm) were studied. Increased absorbance and widening of absorption spectra for both dyes in the presence of varied quantities of silver nanoparticles show the potential of dye-nanoparticle interactions. Fluorescence quenching has been detected for both dyes in the presence of colloidal silver nanoparticles, indicating dynamic quenching, and a significant overlap between the absorption and emission spectra of the silver nanoparticle reveals that fluorescence quenching is also due to energy transfer.
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Affiliation(s)
| | - V S Patil
- Department of Studies in Physics, Davangere University, Karnataka, India
| | - Pavankumar Prabhala
- Department of Chemistry, Karnatak University's Karnatak Science College, Dharwad, Karnataka, 580001, India
| | - A S Lalasangi
- Department of Physics, Smt. I.S Yadawad GFGC, Ramadurg, Karnataka, India
| | - M N Kalasad
- Department of Studies in Physics, Davangere University, Karnataka, India
| | - Vijay K Kulkarni
- Department of Physics, Angadi Institute of Technology and Management, Belagavi, Karnataka, India.
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Kar A, Jain D, Kumar S, Rajput K, Pal S, Rana K, Kar R, Jha SK, Medatwal N, Yavvari PS, Pandey N, Mehta D, Sharma H, Bhattacharya D, Pradhan MK, Sharma RD, Srivastava A, Agrawal U, Mukhopadhyay A, Sengupta S, Patil VS, Bajaj A, Dasgupta U. A localized hydrogel-mediated chemotherapy causes immunogenic cell death via activation of ceramide-mediated unfolded protein response. Sci Adv 2023; 9:eadf2746. [PMID: 37390205 PMCID: PMC10313169 DOI: 10.1126/sciadv.adf2746] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 05/25/2023] [Indexed: 07/02/2023]
Abstract
Treatment of triple-negative breast cancer (TNBC) is challenging because of its "COLD" tumor immunosuppressive microenvironment (TIME). Here, we present a hydrogel-mediated localized delivery of a combination of docetaxel (DTX) and carboplatin (CPT) (called DTX-CPT-Gel therapy) that ensured enhanced anticancer effect and tumor regression on multiple murine syngeneic and xenograft tumor models. DTX-CPT-Gel therapy modulated the TIME by an increase of antitumorigenic M1 macrophages, attenuation of myeloid-derived suppressor cells, and increase of granzyme B+CD8+ T cells. DTX-CPT-Gel therapy elevated ceramide levels in tumor tissues that activated the protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK)-mediated unfolded protein response (UPR). This UPR-mediated activation of apoptotic cell death led to release of damage-associated molecular patterns, thereby activating the immunogenic cell death that could even clear the metastatic tumors. This study provides a promising hydrogel-mediated platform for DTX-CPT therapy that induces tumor regression and effective immune modulation and, therefore, can be explored further for treatment of TNBC.
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Affiliation(s)
- Animesh Kar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Dolly Jain
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Kajal Rajput
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
| | - Sanjay Pal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Kajal Rana
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Raunak Kar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Somesh K. Jha
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Nihal Medatwal
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
| | - Prabhu Srinivas Yavvari
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, 462066, Madhya Pradesh, India
| | - Nishant Pandey
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Devashish Mehta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
| | - Harsh Sharma
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
| | - Debanjan Bhattacharya
- National Institute of Pathology, Safdarjung Hospital Campus, Ansari Nagar West, New Delhi, 110029, India
| | - Manas K. Pradhan
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, 462066, Madhya Pradesh, India
| | - Ravi Datta Sharma
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, 462066, Madhya Pradesh, India
| | - Usha Agrawal
- National Institute of Pathology, Safdarjung Hospital Campus, Ansari Nagar West, New Delhi, 110029, India
| | - Arnab Mukhopadhyay
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Sagar Sengupta
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
- National Institute of Biomedical Genomics, Kalyani, 741251, West Bengal, India
| | - Veena S. Patil
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Ujjaini Dasgupta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon, 122413, Haryana, India
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Verma P, Arora A, Rana K, Mehta D, Kar R, Verma V, Srikanth CV, Patil VS, Bajaj A. Gemini lipid nanoparticle (GLNP)-mediated oral delivery of TNF-α siRNA mitigates gut inflammation via inhibiting the differentiation of CD4 + T cells. Nanoscale 2022; 14:14717-14731. [PMID: 36169577 DOI: 10.1039/d1nr05644a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Proinflammatory cytokines such as Tumor Necrosis Factor-α (TNF-α) are critical mediators of inflammatory bowel disease pathogenesis, and are important targets to restore intestinal homeostasis. Herein, we present the engineering and screening of gemini lipid nanoparticles (GLNPs) for siRNA delivery to colon epithelial cells, macrophages and dendritic cells, and their ability to deliver siRNA therapeutics to the inflamed gastrointestinal tract. We synthesized eight gemini cationic lipids by tethering two lithocholic acid molecules through 3'-hydroxyl- and 24'-carboxyl-derived ammonium groups using different polyalkylene spacers. Screening of GLNPs, composed of gemini cationic lipid and dioleoylphosphatidylethanolamine lipid, showed that GLNPs derived from gemini lipid G1 are the most effective in the delivery of siRNA across mammalian cell membranes with reduced toxicity. Gemini lipid G1-derived siRNA-GLNP complexes (siGLNPs) can effectively reduce gene expression, and are stable in simulated gastric fluid. The delivery of TNF-α siRNA using siGLNPs can mitigate gut inflammation in a dextran sodium sulfate-induced murine inflammation model. As CD4+ T cells, especially Th17 cells, are key mediators of gut inflammation, we further showed that these siGLNPs inhibit infiltration and differentiation of CD4+ T cells to Th17 and Treg cells. Therefore, this study highlights the potential of GLNPs derived from lithocholic acid-derived gemini cationic lipids for the development of next-generation nucleic acid delivery vehicles.
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Affiliation(s)
- Priyanka Verma
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, India.
| | - Amit Arora
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar-125001, India
| | - Kajal Rana
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, India.
| | - Devashish Mehta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, India.
| | - Raunak Kar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi,-110067, India
| | - Vikas Verma
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar-125001, India
| | - C V Srikanth
- Laboratory of Gut Inflammation and Infection Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, India
| | - Veena S Patil
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi,-110067, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad-121001, India.
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Rana K, Pani T, Jha SK, Mehta D, Yadav P, Jain D, Pradhan MK, Mishra S, Kar R, G BR, Srivastava A, Dasgupta U, Patil VS, Bajaj A. Hydrogel-mediated topical delivery of steroids can effectively alleviate psoriasis via attenuating the autoimmune responses. Nanoscale 2022; 14:3834-3848. [PMID: 35195120 DOI: 10.1039/d1nr06001e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Psoriasis is a systemic, relapsing, and chronic autoimmune inflammatory disease of the skin. Topical use of betamethasone, a glucocorticoid, in the form of creams is a common treatment for psoriasis. However, topical use of these creams is challenging due to the ineffective entrapment of steroids, burst release of the entrapped drugs, poor skin permeability, and high toxicity. Herein, we present the engineering of a betamethasone-loaded topical hydrogel (B-Gel) that can efficiently entrap steroids with high spreadability, and can also maintain the sustained release of drugs. We used an imiquimod (IMQ) induced ear psoriasis model, and demonstrated that topical application of B-Gel can mitigate the autoimmune inflammation reactions, and leads to a reduction in erythema, induration, scaling, and ear thickness. As interleukin 17 (IL-17) secreting T helper 17 (Th17) cells and γδ+ T cells are responsible for psoriasis, B-Gel treatment witnessed a reduction in the infiltration of leukocytes, CD4+ T cells, Th17 T cells, and dermal γδ+ T cells. We further demonstrated that B-Gel mediated reduction of IL-1β, IL-17, and K16 (marker for keratinocyte proliferation) is responsible for alleviation of psoriasis. Therefore, the non-greasy nature of the hydrogel with a cooling effect provides an alternative for topical application of steroids.
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Affiliation(s)
- Kajal Rana
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
| | - Trishna Pani
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon-122413, Haryana, India
| | - Somesh Kumar Jha
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
| | - Devashish Mehta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon-122413, Haryana, India
| | - Poonam Yadav
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
| | - Dolly Jain
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
| | - Manas Kumar Pradhan
- Department of Chemistry, Indian Institute of Science Education and Research, Bhauri, Bhopal By-pass Road, Bhopal-462066, India
| | - Sarita Mishra
- CSIR-Institute of Genomics and Integrative Biology, South Campus, Mathura Road, Near to Sukhdev Vihar, New Delhi, Delhi 110025, India
| | - Raunak Kar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi-110067, India.
| | - Betsy Reshma G
- CSIR-Institute of Genomics and Integrative Biology, South Campus, Mathura Road, Near to Sukhdev Vihar, New Delhi, Delhi 110025, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research, Bhauri, Bhopal By-pass Road, Bhopal-462066, India
| | - Ujjaini Dasgupta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon-122413, Haryana, India
| | - Veena S Patil
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi-110067, India.
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
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7
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Kumar S, Pal S, Thakur J, Rani P, Rana K, Kar A, Kar R, Mehta D, Jha SK, Pradhan MK, Jain D, Rajput K, Mishra S, Ganguli M, Srivastava A, Dasgupta U, Patil VS, Bajaj A. Nonimmunogenic Hydrogel-Mediated Delivery of Antibiotics Outperforms Clinically Used Formulations in Mitigating Wound Infections. ACS Appl Mater Interfaces 2021; 13:44041-44053. [PMID: 34491724 DOI: 10.1021/acsami.1c12265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Treatment of chronic wound infections caused by Gram-positive bacteria such as Staphylococcus aureus is highly challenging due to the low efficacy of existing formulations, thereby leading to drug resistance. Herein, we present the synthesis of a nonimmunogenic cholic acid-glycine-glycine conjugate (A6) that self-assembles into a supramolecular viscoelastic hydrogel (A6 gel) suitable for topical applications. The A6 hydrogel can entrap different antibiotics with high efficacy without compromising its viscoelastic behavior. Activities against different bacterial species using a disc diffusion assay demonstrated the antimicrobial effect of the ciprofloxacin-loaded A6 hydrogel (CPF-Gel). Immune profiling and gene expression studies after the application of the A6 gel to mice confirmed its nonimmunogenic nature to host tissues. We further demonstrated that topical application of CPF-Gel clears S. aureus-mediated wound infections more effectively than clinically used formulations. Therefore, cholic acid-derived hydrogels are an efficacious matrix for topical delivery of antibiotics and should be explored further.
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Affiliation(s)
- Sandeep Kumar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Sanjay Pal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Jyoti Thakur
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-pass Road, Bhauri, Bhopal 462030, India
| | - Parul Rani
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Kajal Rana
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Animesh Kar
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Raunak Kar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Devashish Mehta
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Somesh Kumar Jha
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Manas Kumar Pradhan
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-pass Road, Bhauri, Bhopal 462030, India
| | - Dolly Jain
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
| | - Kajal Rajput
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon 122413, Haryana, India
| | - Sarita Mishra
- CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Munia Ganguli
- CSIR-Institute of Genomics and Integrative Biology, New Delhi 110025, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Aasheesh Srivastava
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon 122413, Haryana, India
| | - Ujjaini Dasgupta
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Panchgaon, Manesar, Gurgaon 122413, Haryana, India
| | - Veena S Patil
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Avinash Bajaj
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India
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8
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Pal S, Soni V, Kumar S, Jha SK, Medatwal N, Rana K, Yadav P, Mehta D, Jain D, Sharma P, Kar R, Srivastava A, Patil VS, Dasgupta U, Nandicoori VK, Bajaj A. A hydrogel-based implantable multidrug antitubercular formulation outperforms oral delivery. Nanoscale 2021; 13:13225-13230. [PMID: 34477730 DOI: 10.1039/d0nr08806d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present a non-immunogenic, injectable, low molecular weight, amphiphilic hydrogel-based drug delivery system (TB-Gel) that can entrap a cocktail of four front-line antitubercular drugs, isoniazid, rifampicin, pyrazinamide, and ethambutol. We showed that TB-Gel is more effective than oral delivery of the combination of four drugs in reducing the mycobacterial infection in mice. Results show that half the dose of chemotherapeutic drugs is sufficient to achieve a comparable therapeutic effect to that of oral delivery.
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Affiliation(s)
- Sanjay Pal
- Laboratory of Nanotechnology and Chemical Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad-121001, Haryana, India.
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9
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Zhang Q, Chao TC, Patil VS, Qin Y, Tiwari SK, Chiou J, Dobin A, Tsai CM, Li Z, Dang J, Gupta S, Urdahl KB, Nizet V, Gingeras TR, Gaulton KJ, Rana TM. Genome-wide analysis identifies pairs of cis-acting lncRNAs and protein-coding genes involved in innate immunity. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.185.1] [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] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Long noncoding RNAs (lncRNAs) can regulate target gene expression by acting in cis (locally) or in trans (non-locally). Here, we performed genome-wide expression analysis of Toll-like receptor (TLR)-stimulated human macrophages to identify pairs of cis-acting lncRNAs and protein-coding genes involved in innate immunity. A total of 229 gene pairs were identified, many of which were commonly regulated by signaling through multiple TLRs and were involved in the cytokine responses to infection by group B Streptococcus. We focused on elucidating the function of one lncRNA, named lnc-MARCKS or ROCKI (Regulator of Cytokines and Inflammation), which was induced by multiple TLR stimuli and acted as a master regulator of inflammatory responses. ROCKI interacted with APEX1 (apurinic/apyrimidinic endodeoxyribonuclease 1) to form a ribonucleoprotein complex at the MARCKS promoter. In turn, ROCKI–APEX1 recruited the histone deacetylase HDAC1, which removed the H3K27ac modification from the promoter, thus reducing MARCKS transcription and subsequent Ca2+ signaling and inflammatory gene expression. Finally, genetic variants affecting ROCKI expression were linked to a reduced risk of certain inflammatory and infectious disease in humans, including inflammatory bowel disease and tuberculosis. Collectively, these data highlight the importance of cis-acting lncRNAs in TLR signaling, innate immunity, and pathophysiological inflammation.
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Affiliation(s)
- Qiong Zhang
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Ti-chun Chao
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Veena S. Patil
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Yue Qin
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Shashi Kant Tiwari
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Joshua Chiou
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Alexander Dobin
- 2Cold Spring Harbor Laboratory, Cold Spring Harbor, New York, USA
| | - Chih-Ming Tsai
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Zhonghan Li
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Jason Dang
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Shagun Gupta
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Kevin B Urdahl
- 3Center for Infectious Disease Research (CIDR), Seattle, WA 98109; Department of Immunology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Victor Nizet
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
- 4Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0760, La Jolla, California 92093, US
| | | | - Kyle J Gaulton
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
| | - Tariq M. Rana
- 1Department of Pediatrics, University of California San Diego School of Medicine, 9500 Gilman Drive MC 0762, La Jolla, California 92093, USA
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10
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Zhang Q, Chao TC, Patil VS, Qin Y, Tiwari SK, Chiou J, Dobin A, Tsai CM, Li Z, Dang J, Gupta S, Urdahl K, Nizet V, Gingeras TR, Gaulton KJ, Rana TM. The long noncoding RNA ROCKI regulates inflammatory gene expression. EMBO J 2019; 38:embj.2018100041. [PMID: 30918008 PMCID: PMC6463213 DOI: 10.15252/embj.2018100041] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [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: 06/13/2018] [Revised: 02/12/2019] [Accepted: 02/14/2019] [Indexed: 12/15/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) can regulate target gene expression by acting in cis (locally) or in trans (non-locally). Here, we performed genome-wide expression analysis of Toll-like receptor (TLR)-stimulated human macrophages to identify pairs of cis-acting lncRNAs and protein-coding genes involved in innate immunity. A total of 229 gene pairs were identified, many of which were commonly regulated by signaling through multiple TLRs and were involved in the cytokine responses to infection by group B Streptococcus We focused on elucidating the function of one lncRNA, named lnc-MARCKS or ROCKI (Regulator of Cytokines and Inflammation), which was induced by multiple TLR stimuli and acted as a master regulator of inflammatory responses. ROCKI interacted with APEX1 (apurinic/apyrimidinic endodeoxyribonuclease 1) to form a ribonucleoprotein complex at the MARCKS promoter. In turn, ROCKI-APEX1 recruited the histone deacetylase HDAC1, which removed the H3K27ac modification from the promoter, thus reducing MARCKS transcription and subsequent Ca2+ signaling and inflammatory gene expression. Finally, genetic variants affecting ROCKI expression were linked to a reduced risk of certain inflammatory and infectious disease in humans, including inflammatory bowel disease and tuberculosis. Collectively, these data highlight the importance of cis-acting lncRNAs in TLR signaling, innate immunity, and pathophysiological inflammation.
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Affiliation(s)
- Qiong Zhang
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Ti-Chun Chao
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Veena S Patil
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Yue Qin
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Shashi Kant Tiwari
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Joshua Chiou
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | | | - Chih-Ming Tsai
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Zhonghan Li
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Jason Dang
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Shagun Gupta
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Kevin Urdahl
- Center for Infectious Disease Research (CIDR), Seattle, WA, USA.,Department of Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - Victor Nizet
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA.,Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego School of Medicine, La Jolla, CA, USA
| | | | - Kyle J Gaulton
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Tariq M Rana
- Department of Pediatrics, University of California San Diego School of Medicine, La Jolla, CA, USA
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11
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Patil VS, Madrigal A, Schmiedel BJ, Clarke J, O'Rourke P, de Silva AD, Harris E, Peters B, Seumois G, Weiskopf D, Sette A, Vijayanand P. Precursors of human CD4 + cytotoxic T lymphocytes identified by single-cell transcriptome analysis. Sci Immunol 2018; 3:eaan8664. [PMID: 29352091 PMCID: PMC5931334 DOI: 10.1126/sciimmunol.aan8664] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/27/2017] [Accepted: 11/30/2017] [Indexed: 01/03/2023]
Abstract
CD4+ cytotoxic T lymphocytes (CD4-CTLs) have been reported to play a protective role in several viral infections. However, little is known in humans about the biology of CD4-CTL generation, their functional properties, and heterogeneity, especially in relation to other well-described CD4+ memory T cell subsets. We performed single-cell RNA sequencing in more than 9000 cells to unravel CD4-CTL heterogeneity, transcriptional profile, and clonality in humans. Single-cell differential gene expression analysis revealed a spectrum of known transcripts, including several linked to cytotoxic and costimulatory function that are expressed at higher levels in the TEMRA (effector memory T cells expressing CD45RA) subset, which is highly enriched for CD4-CTLs, compared with CD4+ T cells in the central memory (TCM) and effector memory (TEM) subsets. Simultaneous T cell antigen receptor (TCR) analysis in single cells and bulk subsets revealed that CD4-TEMRA cells show marked clonal expansion compared with TCM and TEM cells and that most of CD4-TEMRA were dengue virus (DENV)-specific in donors with previous DENV infection. The profile of CD4-TEMRA was highly heterogeneous across donors, with four distinct clusters identified by the single-cell analysis. We identified distinct clusters of CD4-CTL effector and precursor cells in the TEMRA subset; the precursor cells shared TCR clonotypes with CD4-CTL effectors and were distinguished by high expression of the interleukin-7 receptor. Our identification of a CD4-CTL precursor population may allow further investigation of how CD4-CTLs arise in humans and, thus, could provide insights into the mechanisms that may be used to generate durable and effective CD4-CTL immunity.
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Affiliation(s)
- Veena S Patil
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Ariel Madrigal
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Benjamin J Schmiedel
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - James Clarke
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
- Cancer Sciences Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Patrick O'Rourke
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Aruna D de Silva
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
- Genetech Research Institute, Colombo, Sri Lanka
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Bjoern Peters
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
- Department of Medicine, University of California San Diego, 9500 Gilman Drive #0656, La Jolla, CA 92093, USA
| | - Gregory Seumois
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Daniela Weiskopf
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
| | - Alessandro Sette
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA
- Department of Medicine, University of California San Diego, 9500 Gilman Drive #0656, La Jolla, CA 92093, USA
| | - Pandurangan Vijayanand
- Division of Vaccine Discovery, La Jolla Institute for Allergy and Immunology, La Jolla, CA 92037, USA.
- Department of Medicine, University of California San Diego, 9500 Gilman Drive #0656, La Jolla, CA 92093, USA
- Clinical and Experimental Sciences, Sir Henry Wellcome Laboratories, Faculty of Medicine University of Southampton, Southampton, UK
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12
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Jolhe PD, Bhanvase BA, Patil VS, Sonawane SH, Potoroko I. Ultrasound assisted synthesis of performic acid in a continuous flow microstructured reactor. Ultrason Sonochem 2017; 39:153-159. [PMID: 28732932 DOI: 10.1016/j.ultsonch.2017.03.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/23/2017] [Accepted: 03/23/2017] [Indexed: 06/07/2023]
Abstract
The present work establishes in depth study of ultrasound assisted preparation of performic acid (PFA) in a continuous flow microstructured reactor. The influence of various parameters viz. formic acid: hydrogen peroxide molar ratio, flow rate, temperature and catalyst loading on the PFA formation were studied in a continuous flow microstructured reactor. In a continuous microstructured reactor in the presence of ultrasonic irradiation, the formation of PFA was found to be dependent on the molar ratio of formic acid: hydrogen peroxide, flow rate of reactants, temperature and catalyst loading (Amberlite IR-120H). The optimized parameter values are 1:1M ratio, 50mL/h, 40°C and 471mg/cm3 respectively. Further, the performance of Amberlite IR-120H catalyst was evaluated for three successive cycles in continuous microstructured reactor. The performance of catalyst was found to be decreased with the usage of the catalyst and is attributed to neutralization of the sulfonic acid groups, catalyst shrinkage, or loss in pore sites. The experimental results revealed that, for an ultrasound assisted synthesis of PFA in continuous microstructured reactor the observed reaction time was even less than 10min. The observed intensification in the PFA synthesis process can be attributed to the intense collapse of the cavities formed at low temperature during ultrasonic irradiations, which further improved the heat and mass transfer rates with the formation of H2O2 during the reaction. The combined use of ultrasound and a continuous flow microstructured reactor has proved beneficial process of performic acid synthesis.
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Affiliation(s)
- P D Jolhe
- University Institute of Chemical Technology, North Maharashtra University, Jalgaon 425001, MS, India
| | - B A Bhanvase
- Department of Chemical Engineering, Laxminarayan Institute of Technology, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440033, MS, India
| | - V S Patil
- University Institute of Chemical Technology, North Maharashtra University, Jalgaon 425001, MS, India
| | - S H Sonawane
- Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana State, India.
| | - I Potoroko
- Graduate School of Medical and Biological Head, The Department of Food and Biotechnology FGAOU VO "South Ural State University" (NIU), Russia
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13
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Dang J, Tiwari SK, Lichinchi G, Qin Y, Patil VS, Eroshkin AM, Rana TM. Zika Virus Depletes Neural Progenitors in Human Cerebral Organoids through Activation of the Innate Immune Receptor TLR3. Cell Stem Cell 2016; 19:258-265. [PMID: 27162029 DOI: 10.1016/j.stem.2016.04.014] [Citation(s) in RCA: 504] [Impact Index Per Article: 63.0] [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: 04/06/2016] [Revised: 04/18/2016] [Accepted: 04/27/2016] [Indexed: 01/17/2023]
Abstract
Emerging evidence from the current outbreak of Zika virus (ZIKV) indicates a strong causal link between Zika and microcephaly. To investigate how ZIKV infection leads to microcephaly, we used human embryonic stem cell-derived cerebral organoids to recapitulate early stage, first trimester fetal brain development. Here we show that a prototype strain of ZIKV, MR766, efficiently infects organoids and causes a decrease in overall organoid size that correlates with the kinetics of viral copy number. The innate immune receptor Toll-like-Receptor 3 (TLR3) was upregulated after ZIKV infection of human organoids and mouse neurospheres and TLR3 inhibition reduced the phenotypic effects of ZIKV infection. Pathway analysis of gene expression changes during TLR3 activation highlighted 41 genes also related to neuronal development, suggesting a mechanistic connection to disrupted neurogenesis. Together, therefore, our findings identify a link between ZIKV-mediated TLR3 activation, perturbed cell fate, and a reduction in organoid volume reminiscent of microcephaly.
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Affiliation(s)
- Jason Dang
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Shashi Kant Tiwari
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Gianluigi Lichinchi
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Yue Qin
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Veena S Patil
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Alexey M Eroshkin
- Bioinformatics core, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Tariq M Rana
- Department of Pediatrics, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA; Institute for Genomic Medicine, University of California San Diego, La Jolla, CA 92093, USA.
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14
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Sakurai K, Talukdar I, Patil VS, Dang J, Li Z, Chang KY, Lu CC, Delorme-Walker V, Dermardirossian C, Anderson K, Hanein D, Yang CS, Wu D, Liu Y, Rana TM. Kinome-wide functional analysis highlights the role of cytoskeletal remodeling in somatic cell reprogramming. Cell Stem Cell 2014; 14:523-34. [PMID: 24702998 DOI: 10.1016/j.stem.2014.03.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 12/02/2013] [Accepted: 03/04/2014] [Indexed: 01/31/2023]
Abstract
The creation of induced pluripotent stem cells (iPSCs) from somatic cells by ectopic expression of transcription factors has galvanized the fields of regenerative medicine and developmental biology. Here, we report a kinome-wide RNAi-based analysis to identify kinases that regulate somatic cell reprogramming to iPSCs. We prepared 3,686 small hairpin RNA (shRNA) lentiviruses targeting 734 kinase genes covering the entire mouse kinome and individually examined their effects on iPSC generation. We identified 59 kinases as barriers to iPSC generation and characterized seven of them further. We found that shRNA-mediated knockdown of the serine/threonine kinases TESK1 or LIMK2 promoted mesenchymal-to-epithelial transition, decreased COFILIN phosphorylation, and disrupted Actin filament structures during reprogramming of mouse embryonic fibroblasts. Similarly, knockdown of TESK1 in human fibroblasts also promoted reprogramming to iPSCs. Our study reveals the breadth of kinase networks regulating pluripotency and identifies a role for cytoskeletal remodeling in modulating the somatic cell reprogramming process.
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Affiliation(s)
- Kumi Sakurai
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Indrani Talukdar
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Veena S Patil
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Jason Dang
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA; Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Zhonghan Li
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Kung-Yen Chang
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Chih-Chung Lu
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Violaine Delorme-Walker
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Celine Dermardirossian
- Department of Immunology and Microbial Science, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Karen Anderson
- Bioinformatics and Systems Biology Program, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Dorit Hanein
- Bioinformatics and Systems Biology Program, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Chao-Shun Yang
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
| | - Dongmei Wu
- CIRM Stem Cell and iPSC Core Facility, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Yang Liu
- CIRM Stem Cell and iPSC Core Facility, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Tariq M Rana
- Program for RNA Biology, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA; Department of Pediatrics, Rady Children's Hospital San Diego and University of California San Diego, La Jolla, CA 92093, USA; Biomedical Sciences Graduate Program, University of California San Diego, La Jolla, CA 92093, USA.
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15
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Patil VS, Anand A, Chakrabarti A, Kai T. The Tudor domain protein Tapas, a homolog of the vertebrate Tdrd7, functions in the piRNA pathway to regulate retrotransposons in germline of Drosophila melanogaster. BMC Biol 2014; 12:61. [PMID: 25287931 PMCID: PMC4210518 DOI: 10.1186/s12915-014-0061-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 07/25/2014] [Indexed: 01/21/2023] Open
Abstract
Background Piwi-interacting RNAs (piRNAs) are a special class of small RNAs that provide defense against transposable elements in animal germline cells. In Drosophila, germline piRNAs are thought to be processed at a unique perinuclear structure, the nuage, that houses piRNA pathway proteins including the Piwi clade of Argonaute family proteins, along with several Tudor domain proteins, RNA helicases and nucleases. We previously demonstrated that Tudor domain protein Tejas (Tej), an ortholog of vertebrate Tdrd5, is an important component of the piRNA pathway. Results In the current study, we identified the paralog of the Drosophila tej gene, tapas (tap), which is an ortholog of vertebrate Tdrd7. Like Tej, Tap is localized at the nuage. Alone, tap loss leads to a mild increase in transposon expression and decrease in piRNAs targeting transposons expressed in the germline. The tap gene genetically interacts with other piRNA pathway genes and we also show that Tap physically interacts with piRNA pathway components, such as Piwi family proteins Aubergine and Argonaute3 and the RNA helicases Spindle-E and Vasa. Together with tej, tap is required for survival of germline cells during early stages and for polarity formation. We further observed that loss of tej and tap together results in more severe defects in the piRNA pathway in germline cells compared to single mutants: the double-mutant ovaries exhibit mis-localization of piRNA pathway components and significantly greater reduction of piRNAs against transposons predominantly expressed in germline compared to single mutants. The single or double mutants did not have any reduction in piRNAs mapping to transposons predominantly expressed in gonadal somatic cells or those derived from unidirectional clusters such as flamenco. Consistently, the loss of both tej and tap function resulted in mis-localization of Piwi in germline cells, whereas Piwi remained localized to the nucleus in somatic cells. Conclusions Our observations suggest that tej and tap work together for germline maintenance. tej and tap also function in a synergistic manner to maintain examined piRNA components at the perinuclear nuage and for piRNA production in Drosophila germline cells. Electronic supplementary material The online version of this article (doi:10.1186/s12915-014-0061-9) contains supplementary material, which is available to authorized users.
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Patil VS, Anand A, Chakrabarti A, Kai T. The Tudor domain protein Tapas, a homolog of the vertebrate Tdrd7, functions in piRNA pathway to regulate retrotransposons in germline of Drosophila melanogaster. BMC Biol 2014. [DOI: 10.1186/preaccept-1173020653133578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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Abstract
The accurate transfer of genetic material in germline cells during the formation of gametes is important for the continuity of the species. However, animal germline cells face challenges from transposons, which seek to spread themselves in the genome. This review focuses on studies in Drosophila melanogaster on how the genome protects itself from such a mutational burden via a class of gonad-specific small interfering RNAs, known as piRNAs (Piwi-interacting RNAs). In addition to silencing transposons, piRNAs also regulate other processes, such as chromosome segregation, mRNA degradation and germline differentiation. Recent studies revealed two modes of piRNA processing – primary processing and secondary processing (also known as ping-pong amplification). The primary processing pathway functions in both germline and somatic cells in the Drosophila ovaries by processing precursor piRNAs into 23–29 nt piRNAs. In contrast, the secondary processing pathway functions only in the germline cells where piRNAs are amplified in a feed-forward loop and require the Piwi-family proteins Aubergine and Argonaute3. Aubergine and Argonaute3 localize to a unique structure found in animal germline cells, the nuage, which has been proposed to function as a compartmentalized site for the ping-pong cycle. The nuage and the localized proteins are well-conserved, implying the importance of the piRNA amplification loop in animal germline cells. Nuage components include various types of proteins that are known to interact both physically and genetically, and therefore appear to be assembled in a sequential order to exert their function, resulting in a macromolecular RNA-protein complex dedicated to the silencing of transposons.
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Affiliation(s)
- Jun Wei Pek
- Department of Biological Sciences and Temasek Life Sciences Laboratory, 1 Research Link, The National University of Singapore, Singapore 117604, Singapore
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Abstract
The past two decades have seen an explosion in research on non-coding RNAs and their physiological and pathological functions. Several classes of small (20-30 nucleotides) and long (>200 nucleotides) non-coding RNAs have been firmly established as key regulators of gene expression in myriad processes ranging from embryonic development to innate immunity. In this review, we focus on our current understanding of the molecular mechanisms underlying the biogenesis and function of small interfering RNAs (siRNAs), microRNAs (miRNAs) and Piwi-interacting RNAs (piRNAs). In addition, we briefly review the relevance of small and long non-coding RNAs to human physiology and pathology and their potential to be exploited as therapeutic agents.
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Affiliation(s)
- Veena S Patil
- Program for RNA Biology, Sanford-Burnham Medical Research Institute , La Jolla, CA , USA
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Ghare NY, Wani KS, Patil VS. A review on methods of recovery of acid(s) from spent pickle liquor of steel industry. J Environ Sci Eng 2013; 55:253-266. [PMID: 25464702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Pickling is the process of removal of oxide layer and rust formed on metal surface. It also removes sand and corrosion products from the surface of metal. Acids such as sulfuric acid, hydrochloric acid are used for pickling. Hydrofluoric acid-Nitric acid mixture is used for stainless steel pickling. Pickling solutions are spent when acid concentration in pickling solutions decreases by 75-85%, which also has metal content up to 150-250 g/ dm3. Spent pickling liquor (SPL) should be dumped because the efficiency of pickling decreases with increasing content of dissolved metal in the bath. The SPL content depends on the plant of origin and the pickling method applied there. SPL from steel pickling in hot-dip galvanizing plants contains zinc(II), iron, traces of lead, chromium. and other heavy metals (max. 500 mg/dm3) and hydrochloric acid. Zinc(II) passes tothe spent solution after dissolution of this metal from zinc(II)-covered racks, chains and baskets used for transportation of galvanized elements. Unevenly covered zinc layers are usually removed in another pickling bath. Due to this, zinc(II) concentration increases even up to 110 g/dm3, while iron content may reach or exceed even 80 g/dm3 in the same solution. This review presents an overview on different aspects of generation and treatment of SPL with recourse to recovery of acid for recycling. Different processes are described in this review and higher weightage is given to membrane processes.
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Abstract
A case of lipofibromatous hamartoma of the median nerve in an adult is described in this article. A 33-year-old male presented with tingling, numbness and swelling in the palm of the left non dominant hand that had been present for a few months. Examination revealed that there was fullness in the volar aspect of the wrist and in the inter-thenar area. Another mass was present at the base of the index finger, which appeared to be involving subcutaneous tissues. The clinical diagnosis was carpal tunnel syndrome due to a space occupying tumor mass in the carpal tunnel. On exploration of the carpal tunnel, a large median nerve was seen 4 cm proximal to the wrist crease line and extending distally until it divided into its branches. Another mass was present at the base of the index finger, which was adherent to the skin. The radial digital nerve of the index finger was normal in size. For the enlarged nerve, an epineurotomy was performed and a biopsy was taken. Another biopsy was taken from the distal mass. His postoperative period was uneventful. In July 2004, at the end of 5 years, the patient had no symptoms and the size of the tumor had not increased.
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Affiliation(s)
- V S Patil
- Chief Hand Surgeon-Hand Clinic, India
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Patil VS, Kai T. Repression of Retroelements in Drosophila Germline via piRNA Pathway by the Tudor Domain Protein Tejas. Curr Biol 2010; 20:724-30. [PMID: 20362446 DOI: 10.1016/j.cub.2010.02.046] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 02/10/2010] [Accepted: 02/12/2010] [Indexed: 01/12/2023]
Affiliation(s)
- Veena S Patil
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Singapore
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Gokul S, Patil VS, Jailkhani R, Hallikeri K, Kattappagari KK. Oxidant-antioxidant status in blood and tumor tissue of oral squamous cell carcinoma patients. Oral Dis 2009; 16:29-33. [PMID: 19656315 DOI: 10.1111/j.1601-0825.2009.01598.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Increased oxidative and nitrosative stress associated with disturbances in antioxidant defense system have been implicated in the pathogenesis of several diseases, most notably oral cancer. The aim of this study was to evaluate the oxidant-antioxidant status in blood samples and tumor tissue in oral squamous cell carcinoma (OSCC) patients in comparison with the healthy controls. METHODS Blood and tumor tissue samples from the diseased individuals and the normal controls were analyzed for malondialdehyde (MDA) and nitric oxide (NO) as indicators of oxidative stress and nitrosative stress respectively; superoxide dismutase (SOD) and catalase enzymes as indicators of antioxidant defense by UV visible spectrophotometer. RESULTS Malondialdehyde and NO levels were significantly elevated in the blood and tissue samples of OSCC patients as compared with the healthy controls. The antioxidant enzymes SOD and catalase were significantly reduced in tissue samples of OSCC group than in the control group while in the erythrocytes, catalase levels were significantly reduced and the SOD levels were higher in OSCC group in comparison with the healthy controls. INTERPRETATION AND CONCLUSION Increased levels of MDA and NO indicate an increase in the oxidative stress in OSCC patients associated with a deficient antioxidant defense mechanism. This oxidant-antioxidant imbalance may be considered as one of the factors responsible for pathogenesis of cancer. Future studies regarding assessment of oxidant-antioxidant status in OSCC patients in view of selecting appropriate mode of therapy and the effectiveness of such therapy in limiting the tumor progression and recurrence is to be carried out.
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Affiliation(s)
- S Gokul
- Department of Oral and Maxillofacial Pathology, S.D.M. College of Dental Sciences and Hospital, Sattur, Dharwad 580009, Karnataka, India.
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Patil VS, Chopra A. Watch out for ‘pins and needles’ in hands—it may be a case of gout. Clin Rheumatol 2007; 26:2185-2187. [PMID: 17628740 DOI: 10.1007/s10067-007-0672-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Revised: 05/31/2007] [Accepted: 06/05/2007] [Indexed: 10/23/2022]
Abstract
We encountered only three patients of carpal tunnel syndrome (CTS) due to tophaceous gout during 25 years of practice in a 'hand clinic' situated in a large metropolis in West India. In two patients, the CTS was bilateral, a rare occurrence in gout. There was an unwarranted delay (up to 9 years) in the diagnosis of both the ailments. In each case, the site of offending tophus was uniquely different.
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Affiliation(s)
| | - Arvind Chopra
- Center for Rheumatic Diseases, Hermes Elegance, Convent St., Camp, Pune, 411 001, India.
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Patil VS, Sachdeva G, Modi DN, Katkam RR, Manjramkar DD, Hinduja I, Puri CP. Rab coupling protein (RCP): a novel target of progesterone action in primate endometrium. J Mol Endocrinol 2005; 35:357-72. [PMID: 16216915 DOI: 10.1677/jme.1.01807] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Acquisition of functional receptivity by the endometrium is assumed to be effected by progesterone-dependent expression and repression of several genes during the implantation window in a menstrual cycle. In the present study, we employed differential display (DD) reverse transcription-polymerase chain reaction (RT-PCR) to identify progesterone-dependent gene/gene fragments that are differentially expressed during the peri-implantation phase in receptive and nonreceptive endometria, obtained from fertile and infertile bonnet monkeys respectively. Receptive endometria were obtained from regularly cycling (n=5) fertile female bonnet monkeys. Endometrial nonreceptivity was induced by treating bonnet monkeys with either 2.5 mg (n=5) or 5.0 mg (n=5) onapristone (ZK 98.299), an antiprogestin, on every third day for one cycle. Ovulation, levels of circulatory hormones (estradiol and progesterone) and menstrual cycle length did not change in treated animals; however, endometrial growth was retarded. DD2, one of the differentially expressed cDNA fragments, showed higher representation in nonreceptive endometria than in receptive endometria. The DD2 sequence was found to be homologous to the sequence of the carboxyl terminal region of Rab coupling protein (RCP), a recently discovered protein involved in intracellular vesicular trafficking. To confirm the identity of DD2 as RCP, RT-PCR studies were carried out with a forward primer deduced from the RCP sequence and a reverse primer from the DD2 sequence. The product (DDRCP) obtained, when sequenced, revealed 95% homology with the nucleotide number 1196-1757 of human RCP cDNA. Furthermore, the pattern of DDRCP expression at transcript level was found to be similar to that shown by DD2; that is, it was higher in nonreceptive endometrium. Northern analysis using labeled DD2 or DDRCP cDNA fragments identified two transcripts of 6.0 and 4.0 kb in human endometrium. In situ hybridization studies using digoxigenin-labeled DD2 revealed significantly higher (P < 0.05) localization of endometrial RCP transcripts in the proliferative phase than in the peri-implantation phase in control animals. The localization was also significantly (P < 0.01) higher in peri-implantation-phase endometria from antiprogestin-treated animals than in control animals. These antiprogestin-treated animals, however, did not demonstrate any concomitant increase in the levels of immunoreactive endometrial Rab4 and Rab11 during the peri-implantation phase. A similar pattern of cycle-dependent RCP expression was observed in human endometrial biopsies. Furthermore, significantly higher (P < 0.05) levels of RCP transcripts were detected during the peri-implantation phase in women with unexplained infertility (n=3) than in fertile women (n=3). This is the first report indicating the endometrial expression of RCP and its hormonal regulation.
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Affiliation(s)
- V S Patil
- Primate Biology Department, National Institute for Research in Reproductive Health, Indian Council of Medical Research, Parel, Mumbai 400 012, India
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Aravind KL, Patil VS, Devegowda G, Umakantha B, Ganpule SP. Efficacy of esterified glucomannan to counteract mycotoxicosis in naturally contaminated feed on performance and serum biochemical and hematological parameters in broilers. Poult Sci 2003; 82:571-6. [PMID: 12710475 DOI: 10.1093/ps/82.4.571] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A study was conducted to determine the efficacy of esterified glucomannan in counteracting the toxic effects of mycotoxins in naturally contaminated diet (aflatoxin 168 ppb, ochratoxin 8.4 ppb, zearalenone 54 ppb, and T-2 toxin 32 ppb) fed to commercial broilers. One-day-old broiler chicks were randomly assigned to one of the four dietary treatments with five replicates of 14 chicks each. Four dietary treatments were 1) control; 2) esterified glucomannan, an adsorbent, tested at 0.05% of diet; 3) naturally contaminated diet; and 4) esterified glucomannan (0.05%) plus naturally contaminated diet. Body weight, feed consumption, feed efficiency, hematology, and serum biochemical and enzyme activities were evaluated. Compared with the control, the naturally contaminated diet significantly decreased body weight and feed consumption and resulted in poor feed efficiency. Esterified glucomannan effectively alleviated the growth depression caused by the naturally contaminated diet. Increased relative weights of liver and gizzard were observed in chicks fed the naturally contaminated diet. Further, feeding a naturally contaminated diet was associated with significant decreases in urea nitrogen and hematocrit values along with altered gamma-glutamyl transferase activity; however, urea nitrogen concentration was improved with addition of esterified glucomannan. These findings suggest that addition of dietary esterified glucomannan is effective in counteracting the toxic effects of naturally contaminated feed with mycotoxins.
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Affiliation(s)
- K L Aravind
- Department of Poultry Science, University of Agricultural Sciences, Hebbal, Bangalore-560 024, India
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Patil VS, Hansen AE. Effect of Diets with and without Fat at Low and High Caloric Levels on Fatty Acids in Blood Cells and Plasma of Dogs. J Nutr 1962; 78:167-72. [PMID: 13941842 DOI: 10.1093/jn/78.2.167] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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