1
|
Gunasekaran P, Hwang YS, Lee GH, Park J, Kim JG, La YK, Park NY, Kothandaraman R, Yim MS, Choi J, Kim HN, Park IY, Lee SJ, Kim MH, Cha-Molstad H, Shin SY, Ryu EK, Bang JK. Degradation of Polo-like Kinase 1 by the Novel Poly-Arginine N-Degron Pathway PROTAC Regulates Tumor Growth in Nonsmall Cell Lung Cancer. J Med Chem 2024; 67:3307-3320. [PMID: 38105611 DOI: 10.1021/acs.jmedchem.3c01493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/19/2023]
Abstract
Polo-like kinase 1 (PLK1), which is crucial in cell cycle regulation, is considered a promising anticancer drug target. Herein, we present the N-degron pathway-based proteolysis targeting chimera (PROTAC) for PLK1 degradation, targeting the Polo-box domain (PBD). We identified DD-2 as the most potent PROTAC that selectively induces PLK1 degradation in cancer cells, including HeLa and nonsmall cell lung cancer (NSCLC), through the N-degron pathway. DD-2 exhibited significant in vitro anticancer effects, inducing G2/M arrest and apoptosis in HeLa and NSCLC cell lines. DD-2 showed significant tumor growth inhibition in a xenograft mouse model using HeLa and NSCLC cell lines, highlighting its potential in cancer treatment. Furthermore, the combination of DD-2 with tyrosine kinase inhibitor (TKI), osimertinib, effectively suppressed tumor growth in double-mutated H1975 cell lines, emphasizing DD-2's potential in combination cancer therapies. Collectively, this study demonstrates the potential of the N-degron pathway, especially using DD-2, for targeted cancer therapies.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
- Dandicure Inc, Ochang, Chungbuk 28119, Republic of Korea
| | - Yeon Sil Hwang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
- Dandicure Inc, Ochang, Chungbuk 28119, Republic of Korea
| | - Gong-Hyeon Lee
- Dandicure Inc, Ochang, Chungbuk 28119, Republic of Korea
| | - Jaehui Park
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jung Gi Kim
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Yeo Kyung La
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
| | - Nam Yeong Park
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
| | | | - Min Su Yim
- Division of Vaccine Development Coordination, Center for Vaccine Research, National Institute of Infectious Diseases, National Institute of Health, Korea Disease Control and Prevention Agency, Cheongju 28159, Republic of Korea
| | - Joonhyeok Choi
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
| | - Il Yeong Park
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28160, Republic of Korea
| | - Soo Jae Lee
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28160, Republic of Korea
| | - Mi-Hyun Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| | - Hyunjoo Cha-Molstad
- Nucleic Acid Therapeutics Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Song Yub Shin
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chungbuk 28119, Republic of Korea
- Dandicure Inc, Ochang, Chungbuk 28119, Republic of Korea
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| |
Collapse
|
2
|
Gunasekaran P, Lee GH, Hwang YS, Koo BC, Han EH, Bang G, La YK, Park S, Kim HN, Kim MH, Bang JK, Ryu EK. An investigation of Plk1 PBD inhibitor KBJK557 as a tumor growth suppressor in non-small cell lung cancer. J Anal Sci Technol 2022. [DOI: 10.1186/s40543-022-00345-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
AbstractLung cancer is the second most commonly reported type of cancer worldwide. Approximately 80–85% of lung cancer occurrences are accounted by non-small cell lung cancer (NSCLC). Polo-like kinase-1 (Plk1) plays multiple roles in cell cycle progression and its overexpression is observed in majority of malignancies, including NSCLC. A combination of frontline drugs and inhibitors targeting the Plk kinase domain (KD) has been used to overcome drug resistance in NSCLC. Plk1 KD inhibitors are highly prone to cross-reactivity with similar kinases, eventually leading to undesirable side effects. Moreover, there have been no reports of Plk1 PBD inhibitors showing antitumorigenic effects on NSCLC cells or animal models so far. To address this issue herein, for the first time, our recently reported Plk1 PBD inhibitor KBJK557 was evaluated for the anticancer potential against NSCLC cells. KBJK557 displayed notable cytotoxic effects in A549, PC9, and H1975 cells. Mechanistic investigations revealed that KBJK557-treated cells underwent G2/M cell cycle arrest, triggering subsequent apoptosis. In vivo antitumorigenic activity in xenograft mice model demonstrates that KBJK557-treated mice showed a considerable decrease in tumor size, proving the significances of Plk1 in lung cancer. Collectively, this study demonstrates that KBJK557 can serve as a promising drug candidate for treating the lung cancer through Plk1 PBD inhibition.
Collapse
|
3
|
Chakraborty B, Kumar RS, Almansour AI, Gunasekaran P, Nayaka S. Bioprospection and secondary metabolites profiling of marine Streptomyces levis strain KS46. Saudi J Biol Sci 2022; 29:667-679. [PMID: 35197732 PMCID: PMC8847965 DOI: 10.1016/j.sjbs.2021.11.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/09/2021] [Accepted: 11/24/2021] [Indexed: 11/25/2022] Open
Abstract
The quest for novel broad spectrum bioactive compounds is needed continuously because of the rapid advent of pathogenic multi drug resistant organisms. Actinomycetes, isolated from unexplored habitats can be a solution of this problem. The motive of this research work was isolation of actinomycetes having potential antimicrobial activities from unexplored regions of Devbag and Tilmati beach. The isolated actinomycetes were screened against pathogenic microbes for antimicrobial activities through cross streak method. Enzyme production activity was checked for these actinomycetes for amylase, protease, cellulase and lipase enzymes. Further antimicrobial activity of ethyl acetate extract of the potent strain KS46 was performed. The strain KS46 was identified with 16S rRNA gene sequencing and secondary structure was analysed. Gas chromatography–Mass spectrometry (GC–MS) profiling was conducted to ascertain the presence of bioactive metabolites in the ethyl acetate extract. The collected samples were pre-treated and 70 actinomycetes were isolated. The Streptomyces sp. strain KS46 showed the best antimicrobial activity in primary screening. Ethyl acetate extract of the strain KS46 revealed antimicrobial activity against S. aureus, B. subtilis, B. cereus, E. faecalis, K. pneumoniae, E. coli, S. flexneri, C. albicans and C. glabrata. The 16S rRNA gene sequencing identified the strain KS46 as Streptomyces levis strain KS46. The GC–MS metabolite profiling of the ethyl acetate extract revealed the availability of 42 compounds including fatty acid esters, fatty acid anhydrides, alkanes, steroids, esters, alcohols, carboxylic ester, etc. having antibacterial, antifungal, antiproliferative, antioxidant activities. This study indicated that Devbag and Tilmati beaches being untapped habitats have enormous diversity of promising antimicrobial metabolite producing actinomycetes. Therefore, further exploration should be carried out to characterize the potential actinomycetes, which can be optimistic candidates for generation of novel antimicrobial drugs.
Collapse
|
4
|
Gunasekaran P, Han HJ, Choi JH, Ryu EK, Park NY, Bang G, La YK, Park S, Hwang K, Kim HN, Kim MH, Jeon YH, Soung NK, Bang JK. Amphipathic Small Molecule AZT Compound Displays Potent Inhibitory Effects in Cancer Cell Proliferation. Pharmaceutics 2021; 13:pharmaceutics13122071. [PMID: 34959352 PMCID: PMC8704889 DOI: 10.3390/pharmaceutics13122071] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/26/2021] [Accepted: 12/01/2021] [Indexed: 11/24/2022] Open
Abstract
Cancer has been identified as a leading cause of death worldwide, and the increasing number of cancer cases threatens to shorten the average life expectancy of people. Recently, we reported a 3-azido-3-deoxythymidine (AZT)-based amphipathic small molecule, ADG-2e that revealed a notable potency against tumor metastasis. To evaluate the anticancer potential of ADG-2e, we assessed its anticancer potency in vitro and in vivo. Anticancer screening of ADG-2e against cervical cancer cells, HeLa CCL2, and BT549 mammary gland ductal carcinoma showed significant inhibition of cancer cell proliferation. Furthermore, mechanistic investigations revealed that cancer cell death presumably proceeded through an oncosis mechanistic pathway because ADG-2e treated cells showed severe damage on the plasma membrane, a loss of membrane integrity, and leakage of α-tubulin and β-actin. Finally, evaluation of the antitumorigenic potential of ADG-2e in mouse xenograft models revealed that this compound potentially inhibits cancer cell proliferation. Collectively, these findings suggest that ADG-2e can evolve as an anticancer agent, which may represent a model for nucleoside-based small molecule anticancer drug discovery.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
- Dandicure Inc., Ochang, Cheongju 28119, Korea
| | - Ho Jin Han
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju 28116, Korea;
| | - Jung hoon Choi
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Cheongju 28119, Korea; (J.h.C.); (G.B.)
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon 34113, Korea
| | - Nam Yeong Park
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon 34113, Korea
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Cheongju 28119, Korea; (J.h.C.); (G.B.)
| | - Yeo Kyung La
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
| | - Sunghyun Park
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
| | - Kyubin Hwang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
| | - Mi-Hyun Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Korea;
| | - Young Ho Jeon
- College of Pharmacy, Korea University, 2511 Sejong-ro, Sejong 30019, Korea
- Correspondence: (Y.H.J.); (N.-K.S.); (J.K.B.)
| | - Nak-Kyun Soung
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju 28116, Korea;
- Correspondence: (Y.H.J.); (N.-K.S.); (J.K.B.)
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Cheongju 28119, Korea; (P.G.); (E.K.R.); (N.Y.P.); (Y.K.L.); (S.P.); (K.H.); (H.N.K.)
- Dandicure Inc., Ochang, Cheongju 28119, Korea
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon 34113, Korea
- Correspondence: (Y.H.J.); (N.-K.S.); (J.K.B.)
| |
Collapse
|
5
|
Gunasekaran P, Yim MS, Ahn M, Soung NK, Park JE, Kim J, Bang G, Shin SC, Choi J, Kim M, Kim HN, Lee YH, Chung YH, Lee K, EunKyeong Kim E, Jeon YH, Kim MJ, Lee KR, Kim BY, Lee KS, Ryu EK, Bang JK. Development of a Polo-like Kinase-1 Polo-Box Domain Inhibitor as a Tumor Growth Suppressor in Mice Models. J Med Chem 2020; 63:14905-14920. [PMID: 33142063 PMCID: PMC8919061 DOI: 10.1021/acs.jmedchem.0c01451] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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] [Indexed: 01/07/2023]
Abstract
Polo-like kinase-1 (Plk1) plays a key role in mitosis and has been identified as an attractive anticancer drug target. Plk1 consists of two drug-targeting sites, namely, N-terminal kinase domain (KD) and C-terminal polo-box domain (PBD). As KD-targeting inhibitors are associated with severe side effects, here we report on the pyrazole-based Plk1 PBD inhibitor, KBJK557, which showed a remarkable in vitro anticancer effect by inducing Plk1 delocalization, mitotic arrest, and apoptosis in HeLa cells. Further, in vivo optical imaging analysis and antitumorigenic activities in mouse xenograft models demonstrate that KBJK557 preferentially accumulates in cancer cells and selectively inhibits cancer cell proliferation. Pharmacokinetic profiles and partition coefficients suggest that KBJK557 was exposed in the blood and circulated through the organs with an intermediate level of clearance (t1/2, 7.73 h). The present investigation offers a strategy for specifically targeting cancer using a newly identified small-molecule inhibitor that targets the Plk1 PBD.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Min Su Yim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Nak-Kyun Soung
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Jung-Eun Park
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Jaehi Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Chung-Buk 363-883, Republic of Korea
| | - Sang Chul Shin
- Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Joonhyeok Choi
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Minkyoung Kim
- College of Pharmacy, Dongguk University, 52 Dongguk-ro, Ilsandong-gu, Goyang 10320, Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Young-Ho Lee
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Young-Ho Chung
- Drug & Disease Target Research Team, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
| | - Kyeong Lee
- College of Pharmacy, Dongguk University, 52 Dongguk-ro, Ilsandong-gu, Goyang 10320, Republic of Korea
| | - Eunice EunKyeong Kim
- Biomedical Research Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Young-Ho Jeon
- Laboratory of Biochemistry and Structural Biology, College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Min Ju Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Kyeong-Ryoon Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Bo-Yeon Kim
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeongudanji-ro, Ochang, Cheongwon, Chungbuk 28116, Republic of Korea
| | - Kyung S Lee
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk 28119, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Republic of Korea
| |
Collapse
|
6
|
Gunasekaran P, Kim EY, Lee J, Ryu EK, Shin SY, Bang JK. Synthesis of Fmoc-Triazine Amino Acids and Its Application in the Synthesis of Short Antibacterial Peptidomimetics. Int J Mol Sci 2020; 21:ijms21103602. [PMID: 32443730 PMCID: PMC7279249 DOI: 10.3390/ijms21103602] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 12/13/2022] Open
Abstract
To combat the escalating rise of antibacterial resistance, the development of antimicrobial peptides (AMPs) with a unique mode of action is considered an attractive strategy. However, proteolytic degradation of AMPs remains the greatest challenge in their transformation into therapeutics. Herein, we synthesized Fmoc-triazine amino acids that differ from each other by anchoring either cationic or hydrophobic residues. These unnatural amino acids were adopted for solid-phase peptide synthesis (SPPS) to synthesize a series of amphipathic antimicrobial peptidomimetics. From the antimicrobial screening, we found that the trimer, BJK-4 is the most potent short antimicrobial peptidomimetic without showing hemolytic activity and it displayed enhanced proteolytic stability. Moreover, the mechanism of action to kill bacteria was found to be an intracellular targeting.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (P.G.); (J.L.); (E.K.R.)
| | - Eun Young Kim
- Department of Medical Science, Graduate School, Chosun University, Gwangju 61452, Korea; (E.Y.K.); (S.Y.S.)
| | - Jian Lee
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (P.G.); (J.L.); (E.K.R.)
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (P.G.); (J.L.); (E.K.R.)
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Korea
| | - Song Yub Shin
- Department of Medical Science, Graduate School, Chosun University, Gwangju 61452, Korea; (E.Y.K.); (S.Y.S.)
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju 61452, Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang 28119, Korea; (P.G.); (J.L.); (E.K.R.)
- Department of Bio-analytical Science, University of Science & Technology, Daejeon 34113, Korea
- Correspondence: ; Tel.: +82-43-240-5023
| |
Collapse
|
7
|
Gunasekaran P, Fan M, Kim EY, Shin JH, Lee JE, Son EJ, Kim J, Hwang E, Yim MS, Kim EH, Choi YJ, Lee YH, Chung YH, Kim HN, Ryu EK, Shin SY, Kim EK, Bang JK. Amphiphilic Triazine Polymer Derivatives as Antibacterial And Anti-atopic Agents in Mice Model. Sci Rep 2019; 9:15161. [PMID: 31641232 PMCID: PMC6805867 DOI: 10.1038/s41598-019-51561-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 10/01/2019] [Indexed: 01/06/2023] Open
Abstract
Considering the emergence of bacterial resistance and low proteolytic stability of antimicrobial peptides (AMPs), herein we developed a series of ultra-short triazine based amphipathic polymers (TZP) that are connected with ethylene diamine linkers instead of protease sensitive amide bond. The most potent oligomers, TZP3 and TZP5 not only displayed potent antibacterial action on various drug-resistant pathogens but also exhibited a strong synergic antibacterial activity in combination with chloramphenicol against multidrug-resistant Pseudomonas aeruginosa (MDRPA). Since most of atopic dermatitis (AD) infections are caused by bacterial colonization, we evaluated the potency of TZP3 and TZP5 on AD in vitro and in vivo. In vitro AD analysis of these two polymers showed significant inhibition against the release of β-hexosaminidase and tumor necrosis factor (TNF-α) from RBL-2H3 cells. In AD-like skin lesions in BALB/c mice model, these two polymers displayed significant potency in suppressing dermal and epidermal thickness, mast cell infiltration and pro-inflammatory cytokines expression. Moreover, these polymers exhibited remarkable efficacy over the allergies caused by the imbalance of Th1/Th2 by regulating total IgE and IgG2a. Finally, the impact of treatment effects of these polymers was examined through analyzing the weights and sizes of spleen and lymph node of AD-induced mice.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Meiqi Fan
- Division of Food Bioscience, Konkuk University, Chungju, 27478, Republic of Korea
| | - Eun Young Kim
- Department of Medical Science, Graduate School, and Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, 61452, Republic of Korea
| | - Jun Ho Shin
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Ji Eun Lee
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea.,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Eun Ju Son
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Jaehi Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Eunha Hwang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Min Su Yim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea.,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Eun-Hee Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Young-Jin Choi
- Division of Food Bioscience, Konkuk University, Chungju, 27478, Republic of Korea
| | - Young-Ho Lee
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea.,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Young-Ho Chung
- Drug & Disease Target Research Team, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea.,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Song Yub Shin
- Department of Medical Science, Graduate School, and Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju, 61452, Republic of Korea.
| | - Eun-Kyung Kim
- Division of Food Bioscience, Konkuk University, Chungju, 27478, Republic of Korea.
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea. .,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea.
| |
Collapse
|
8
|
Kiruba R, Suresh Babu BV, Sheriff AK, Gunasekaran P, Anupama CP, Saran N, Kumar VS, Padmapriya P, Chakravarthy NN, Kaveri K. Dynamics of the occurrence of influenza in relation to seasonal variation in Chennai, Tamil Nadu: A 7 -year cumulative study. Indian J Med Microbiol 2019; 37:401-405. [PMID: 32003340 DOI: 10.4103/ijmm.ijmm_19_226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/04/2022]
Abstract
Background Influenza viruses have emerged as virulent pathogens causing considerable burden across the world. A thorough understanding of the pattern in occurrence of influenza globally is the need of hour. The present study deals with analysis of the dynamics of Influenza virus, especially the influence of seasonal change on viral circulation and causation of epidemics/pandemics in the context of subtropical region. Methods During the 7 year (2009-2015) study, 36670 specimens were subjected to influenza analysis. Nasopharyngeal swabs collected from suspected patients from Chennai, Tamil Nadu, were tested and typed by real-time polymerase chain reaction assay. Results During 2009 pandemic, among influenza A positives 95.16% were Apdm09, indicating that there was a predominant circulation of Apdm09. During postpandemic period, there were waves in the occurrence of Apdm09 which indicates fall in immunity with buildup in the susceptible population. Conclusion In Chennai, Tamil Nadu, influenza positivity started with the onset of monsoon and peaks during the postmonsoon months throughout the study period. The assessment of meteorological factors compounding influenza activity can help in raising alerts to the public health officials of impending disaster which suggests that Influenza vaccination can be initiated before monsoon months in South India.
Collapse
Affiliation(s)
- Ramesh Kiruba
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - B V Suresh Babu
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - A K Sheriff
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - P Gunasekaran
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - C P Anupama
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - N Saran
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - V Senthil Kumar
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - P Padmapriya
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - N Nivas Chakravarthy
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| | - Krishnasamy Kaveri
- Department of Virology, King Institute of Preventive Medicine and Research, Chennai, Tamil Nadu, India
| |
Collapse
|
9
|
Gunasekaran P, Rajasekaran G, Han EH, Chung YH, Choi YJ, Yang YJ, Lee JE, Kim HN, Lee K, Kim JS, Lee HJ, Choi EJ, Kim EK, Shin SY, Bang JK. Cationic Amphipathic Triazines with Potent Anti-bacterial, Anti-inflammatory and Anti-atopic Dermatitis Properties. Sci Rep 2019; 9:1292. [PMID: 30718691 PMCID: PMC6361992 DOI: 10.1038/s41598-018-37785-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 12/12/2018] [Indexed: 12/26/2022] Open
Abstract
The emergence of multi-drug resistant bacteria forces the therapeutic world into a position, where the development of new and alternative kind of antibiotics is highly important. Herein, we report the development of triazine-based amphiphilic small molecular antibacterial agents as mimics of lysine- and arginine-based cationic peptide antibiotics (CPAs). These compounds were screened against a panel of both Gram-positive and Gram-negative bacterial strains. Further, anti-inflammatory evaluation of these compounds led to the identification of four efficient compounds, DG-5, DG-6, DL-5, and DL-6. These compounds displayed significant potency against drug-resistant bacteria, including methicillin-resistant S. aureus (MRSA), multidrug-resistant P. aeruginosa (MDRPA), and vancomycin-resistant E. faecium (VREF). Mechanistic studies, including cytoplasmic membrane depolarization, confocal imaging and flow cytometry suggest that DG-5, DG-6, and DL-5 kill bacteria by targeting bacterial membrane, while DL-6 follows intracellular targeting mechanism. We also demonstrate that these molecules have therapeutic potential by showing the efficiency of DG-5 in preventing the lung inflammation of lipopolysaccharide (LPS)-induced acute lung injury (ALI) mouse model. More interestingly, DL-6 exhibited impressive potency on atopic dermatitis (AD)-like skin lesions in BALB/c mice model by suppressing pro-inflammatory cytokines. Collectively, these results suggest that they can serve a new class of antimicrobial, anti-inflammatory and anti-atopic agents with promising therapeutic potential.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Ganesan Rajasekaran
- Department of Cellular and Molecular Medicine, Chosun University, Gwangju, 501-759, Republic of Korea
| | - Eun Hee Han
- Drug & Disease Target Research Team, Korea Basic Science Institute (KBSI), Cheongju, 28119, Republic of Korea
| | - Young-Ho Chung
- Drug & Disease Target Research Team, Korea Basic Science Institute (KBSI), Cheongju, 28119, Republic of Korea
| | - Young-Jin Choi
- Division of Food Bioscience, Konkuk University, Chungju, 27478, Republic of Korea
| | - Yu Jin Yang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Ji Eun Lee
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea.,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea
| | - Kiram Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup, Chungcheongbuk-do, 28116, Republic of Korea
| | - Jin-Seok Kim
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup, Chungcheongbuk-do, 28116, Republic of Korea
| | - Hyun-Jun Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang-eup, Chungcheongbuk-do, 28116, Republic of Korea
| | - Eun-Ju Choi
- Department of Physical Education, Daegu Catholic University, Gyeongsan, 38430, Republic of Korea
| | - Eun-Kyung Kim
- Division of Food Bioscience, Konkuk University, Chungju, 27478, Republic of Korea.
| | - Song Yub Shin
- Department of Cellular and Molecular Medicine, Chosun University, Gwangju, 501-759, Republic of Korea.
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute (KBSI), Ochang, Chung Buk, 28119, Republic of Korea. .,Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea.
| |
Collapse
|
10
|
Padmapriya P, Gracy Fathima S, Ramanathan G, V Y, A KS, Kaveri K, Gunasekaran P, Tirichurapalli Sivagnanam U, Thennarasu S. Development of antiviral inhibitor against dengue 2 targeting Ns3 protein: In vitro and in silico significant studies. Acta Trop 2018; 188:1-8. [PMID: 30145258 DOI: 10.1016/j.actatropica.2018.08.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 06/01/2018] [Revised: 07/09/2018] [Accepted: 08/17/2018] [Indexed: 02/08/2023]
Abstract
Dengue fever is a severe, widespread disease with more than 2 million diagnosed infections per year. The Dengue virus protease represents a cardinal target for prudent drug design. Among the four serotypes Dengue 2 is known for the occurrence of its frequent epidemics. The new compound inhibited the Dengue-2 in the low-micromolar range in cells. At the moment, protease inhibitors are not actively tried against dengue virus as therapeutic option. We have identified thiosemicarbazones derived phenyl-acetyl ketones as candidate for a novel class of protease inhibitors. Here, we report the selective and non-competitive inhibition of the Dengue virus serotype 2 in vitro and in silico. Molecular docking suggests binding at a specific active site. In addition to the docking assays, few techniques were developed to interpret these molecules's antiviral profile in vitro.
Collapse
Affiliation(s)
- P Padmapriya
- Biological Material Lab, CSIR-Central Leather Research Institute, Adyar, Chennai, India
| | - S Gracy Fathima
- Department of Virology, King Institute of Preventive Medicine and Research, Guindy, Chennai, 600032, Tamilnadu, India
| | | | - Yuvaraj V
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, Tamilnadu, India
| | - Khaleefathullah Sheriff A
- Department of Virology, King Institute of Preventive Medicine and Research, Guindy, Chennai, 600032, Tamilnadu, India
| | - K Kaveri
- Department of Virology, King Institute of Preventive Medicine and Research, Guindy, Chennai, 600032, Tamilnadu, India
| | - P Gunasekaran
- Department of Virology, King Institute of Preventive Medicine and Research, Guindy, Chennai, 600032, Tamilnadu, India
| | | | - Sathiah Thennarasu
- Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai, 600020, Tamilnadu, India.
| |
Collapse
|
11
|
Fanari Z, Gunasekaran P, Shaukat A, Thapa J, Persad P, Hammamo S, Dawn B, Wiley M, Weintraub W, Doorey A, Tadros P. P1636Utility and safety of pressure wires use in hemodynamic assessment of paradoxical low flow low gradient aortic stenosis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
12
|
Gunasekaran P, Bickel T, Nadella S, Parashara D, Dawn B. P6031Impact of symptomatic peripheral arterial disease on adverse outcomes, poor graft survival and length of hospital stay following heart transplantation: insights from the UNOS database (1988-2014). Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
13
|
Fanari Z, Gunasekaran P, Shaukat A, Wiley M, Dawn B, Weintraub W, Tadros P, Marshall E. P1646Paradoxical low flow low gradient severe aortic stenosis with preserved left ventricular ejection fraction. impact of medical, transcatheter and surgical management. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
14
|
Gunasekaran P, Lee SR, Jeong SM, Kwon JW, Takei T, Asahina Y, Bang G, Kim S, Ahn M, Ryu EK, Kim HN, Nam KY, Shin SY, Hojo H, Namgoong S, Kim NH, Bang JK. Cover Picture: Pyrrole-Based Macrocyclic Small-Molecule Inhibitors That Target Oocyte Maturation (ChemMedChem 8/2017). ChemMedChem 2017. [DOI: 10.1002/cmdc.201700205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pethaiah Gunasekaran
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - So-Rim Lee
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - Seung-Min Jeong
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - Jeong-Woo Kwon
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - Toshiki Takei
- Institute for Protein Research; Osaka University; 3-2 Yamadaoka Suita Osaka 565-0871 Japan
| | - Yuya Asahina
- Institute for Protein Research; Osaka University; 3-2 Yamadaoka Suita Osaka 565-0871 Japan
| | - Geul Bang
- Biomedical Omics Group; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
| | - Seongnyeon Kim
- Biomedical Omics Group; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
| | - Eun Kyung Ryu
- Division of Magnetic Resonance; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
- Department of Bio-analytical Science; University of Science & Technology; Daejeon 34113 Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
| | - Ki-Yub Nam
- Pharos I&BT Co. Ltd.; Gyeonggi-do 14059 Republic of Korea
| | - Song Yub Shin
- Department of Medical Science, Graduate School and Department of Cellular & Molecular Medicine; School of Medicine, Chosun University; Gwangju 501-759 Republic of Korea
| | - Hironobu Hojo
- Institute for Protein Research; Osaka University; 3-2 Yamadaoka Suita Osaka 565-0871 Japan
| | - Suk Namgoong
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - Nam-Hyung Kim
- Molecular Embryology Laboratory, Department of Animal Sciences; Chungbuk National University; Chung-Buk 361-763 Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance; Korea Basic Science Institute; Ochang Chung-Buk 363-883 Republic of Korea
- Department of Bio-analytical Science; University of Science & Technology; Daejeon 34113 Republic of Korea
| |
Collapse
|
15
|
Gunasekaran P, Lee SR, Jeong SM, Kwon JW, Takei T, Asahina Y, Bang G, Kim S, Ahn M, Ryu EK, Kim HN, Nam KY, Shin SY, Hojo H, Namgoong S, Kim NH, Bang JK. Pyrrole-Based Macrocyclic Small-Molecule Inhibitors That Target Oocyte Maturation. ChemMedChem 2017; 12:580-589. [PMID: 28296169 DOI: 10.1002/cmdc.201700048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 01/24/2017] [Revised: 03/13/2017] [Indexed: 11/08/2022]
Abstract
Polo-like kinase 1 (PLK1) plays crucial roles in various stages of oocyte maturation. Recently, we reported that the peptidomimetic compound AB103-8, which targets the polo box domain (PBD) of PLK1, affects oocyte meiotic maturation and the resumption of meiosis. However, to overcome the drawbacks of peptidic compounds, we designed and synthesized a series of pyrrole-based small-molecule inhibitors and tested them for their effects on the rates of porcine oocyte maturation. Among them, the macrocyclic compound (E/Z)-3-(2,16-dioxo-19-(4-phenylbutyl)-3,19-diazabicyclo[15.2.1]icosa-1(20),6,17-trien-3-yl)propyl dihydrogen phosphate (4) showed the highest inhibitory activity with enhanced inhibition against embryonic blastocyst formation. Furthermore, the addition of this compound to culture media efficiently blocked the maturation of porcine and mouse oocytes, indicating its ability to penetrate the zona pellucida and cell membrane. We investigated mouse oocytes treated with compound 4, and the resulting impairment of spindle formation confirmed PLK1 inhibition. Finally, molecular modeling studies with PLK1 PBD also confirmed the presence of significant interactions between compound 4 and PLK1 PBD binding pocket residues, including those in the phosphate, tyrosine-rich, and pyrrolidine binding pockets. Collectively, these results suggest that the macrocyclic compound 4 may serve as a promising template for the development of novel contraceptive agents.
Collapse
Affiliation(s)
- Pethaiah Gunasekaran
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - So-Rim Lee
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Seung-Min Jeong
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Jeong-Woo Kwon
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Toshiki Takei
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yuya Asahina
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Seongnyeon Kim
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Eun Kyung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Hak Nam Kim
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Ki-Yub Nam
- Pharos I&BT Co. Ltd., Gyeonggi-do, 14059, Republic of Korea
| | - Song Yub Shin
- Department of Medical Science, Graduate School and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, 501-759, Republic of Korea
| | - Hironobu Hojo
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Suk Namgoong
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Nam-Hyung Kim
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
- Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| |
Collapse
|
16
|
Ahn M, Gunasekaran P, Rajasekaran G, Kim EY, Lee SJ, Bang G, Cho K, Hyun JK, Lee HJ, Jeon YH, Kim NH, Ryu EK, Shin SY, Bang JK. Pyrazole derived ultra-short antimicrobial peptidomimetics with potent anti-biofilm activity. Eur J Med Chem 2016; 125:551-564. [PMID: 27718471 DOI: 10.1016/j.ejmech.2016.09.071] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [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: 08/02/2016] [Revised: 09/20/2016] [Accepted: 09/21/2016] [Indexed: 12/18/2022]
Abstract
In this study, we report on the first chemical synthesis of ultra-short pyrazole-arginine based antimicrobial peptidomimetics derived from the newly synthesized N-alkyl/aryl pyrazole amino acids. Through the systematic tuning of hydrophobicity, charge, and peptide length, we identified the shortest peptide Py11 with the most potent antimicrobial activity. Py11 displayed greater antimicrobial activity against antibiotic-resistant bacteria, including MRSA, MDRPA, and VREF, which was approximately 2-4 times higher than that of melittin. Besides its higher selectivity (therapeutic index) toward bacterial cells than LL-37, Py11 showed highly increased proteolytic stability against trypsin digestion and maintained its antimicrobial activity in the presence of physiological salts. Interestingly, Py11 exhibited higher anti-biofilm activity against MDRPA compared to LL-37. The results from fluorescence spectroscopy and transmission electron microscopy (TEM) suggested that Py11 kills bacterial cells possibly by integrity disruption damaging the cell membrane, leading to the cytosol leakage and eventual cell lysis. Furthermore, Py11 displayed significant anti-inflammatory (endotoxin-neutralizing) activity by inhibiting LPS-induced production of nitric oxide (NO) and TNF-α. Collectively, our results suggest that Py11 may serve as a model compound for the design of antimicrobial and antisepsis agents.
Collapse
Affiliation(s)
- Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Pethaiah Gunasekaran
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Ganesan Rajasekaran
- Department of Medical Science, Graduate School and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, 501-759, Republic of Korea
| | - Eun Young Kim
- Department of Medical Science, Graduate School and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, 501-759, Republic of Korea
| | - Soo-Jae Lee
- College of Pharmacy, Chungbuk National University, Chungbuk, 361-763, Republic of Korea
| | - Geul Bang
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Kun Cho
- Biomedical Omics Group, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Jae-Kyung Hyun
- Division of Electron Microscopic Research, Korea Basic Science Institute, 113 Gwahakro, Daejeon, 305-333, Republic of Korea
| | - Hyun-Ju Lee
- Division of Electron Microscopic Research, Korea Basic Science Institute, 113 Gwahakro, Daejeon, 305-333, Republic of Korea; Department of Chemistry, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Young Ho Jeon
- College of Pharmacy, Korea University, 2511 Sejong-Ro, Sejong, 30019, Republic of Korea
| | - Nam-Hyung Kim
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Chung-Buk, 361-763, Republic of Korea
| | - Eun Kyoung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea; Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea
| | - Song Yub Shin
- Department of Medical Science, Graduate School and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, 501-759, Republic of Korea.
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea; Department of Bio-analytical Science, University of Science & Technology, Daejeon, 34113, Republic of Korea.
| |
Collapse
|
17
|
Babu BS, Gunasekaran P, Venkataraman P, Mohana S, Kiruba R, Ruban K, Magesh S, Indhumathi CP, Anupama CP, Sheriff AK, Arunagiri K, Kaveri K. Prevalence and Molecular Characterization of Circulating Respiratory Syncytial Virus (RSV) in Chennai, South India during 2011-2014. ACTA ACUST UNITED AC 2016. [DOI: 10.13005/bbra/2132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
18
|
Jia JL, Han YH, Kim HC, Ahn M, Kwon JW, Luo Y, Gunasekaran P, Lee SJ, Lee KS, Kyu Bang J, Kim NH, Namgoong S. Structural basis for recognition of Emi2 by Polo-like kinase 1 and development of peptidomimetics blocking oocyte maturation and fertilization. Sci Rep 2015; 5:14626. [PMID: 26459104 PMCID: PMC4602232 DOI: 10.1038/srep14626] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 09/01/2015] [Indexed: 11/08/2022] Open
Abstract
In a mammalian oocyte, completion of meiosis is suspended until fertilization by a sperm, and the cell cycle is arrested by a biochemical activity called cytostatic factor (CSF). Emi2 is one of the CSFs, and it maintains the protein level of maturation promoting factor (MPF) by inhibiting ubiquitin ligase anaphase promoting complex/cyclosome (APC/C). Degradation of Emi2 via ubiquitin-mediated proteolysis after fertilization requires phosphorylation by Polo-like kinase 1 (Plk1). Therefore, recognition and phosphorylation of Emi2 by Plk1 are crucial steps for cell cycle resumption, but the binding mode of Emi2 and Plk1 is poorly understood. Using biochemical assays and X-ray crystallography, we found that two phosphorylated threonines (Thr(152) and Thr(176)) in Emi2 are each responsible for the recruitment of one Plk1 molecule by binding to its C-terminal polo box domain (PBD). We also found that meiotic maturation and meiosis resumption via parthenogenetic activation were impaired when Emi2 interaction with Plk1-PBD was blocked by a peptidomimetic called 103-8. Because of the inherent promiscuity of kinase inhibitors, our results suggest that targeting PBD of Plk1 may be an effective strategy for the development of novel and specific contraceptive agents that block oocyte maturation and/or fertilization.
Collapse
Affiliation(s)
- Jia-Lin Jia
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | - Young-Hyun Han
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | - Hak-Cheol Kim
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Korea
| | - Jeong-Woo Kwon
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | - Yibo Luo
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | | | - Soo-Jae Lee
- College of Pharmacy, Chungbuk National University, Republic of Korea
| | - Kyung S. Lee
- National Cancer Institute, National Institute of Health, Rockville, Maryland, United States
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Korea
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| | - Suk Namgoong
- Department of Animal Sciences, Chungbuk National University, Republic of Korea
| |
Collapse
|
19
|
Nagarajan N, Gunasekaran P, Rajendran P. Reply to comment by Ho on "genetic characterization, nickel tolerance, biosorption, kinetics, and uptake mechanism of a bacterium isolated from electroplating industrial effluent". Can J Microbiol 2015; 61:883. [PMID: 26418949 DOI: 10.1139/cjm-2015-0495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- N Nagarajan
- a Department of Zoology, Vivekananda College, Tiruvedakam, Madurai - 625 234, Tamil Nadu, India
| | - P Gunasekaran
- b Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai - 625 021, Tamil Nadu, India
| | - P Rajendran
- a Department of Zoology, Vivekananda College, Tiruvedakam, Madurai - 625 234, Tamil Nadu, India
| |
Collapse
|
20
|
Arun G, Eyini M, Gunasekaran P. Characterization and biological activities of extracellular melanin produced by Schizophyllum commune (Fries). Indian J Exp Biol 2015; 53:380-387. [PMID: 26155678] [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
Melanins are enigmatic pigments produced by a wide variety of microorganisms including bacteria and fungi. Here, we have isolated and characterized extracellular melanin from mushroom fungus, Schizophyllum commune. The extracellular dark pigment produced by the broth culture of S. commune, after 21 days of incubation was recovered by hot acid-alkali treatment. The melanin nature of the pigment was characterized by biochemical tests and further, confirmed by UV, IR, EPR, NMR and MALDI-TOF Mass Spectra. Extracellular melanin, at 100 μg/ml, showed significant antibacterial activity against Escherichia coli, Bacillus subtilis, Klebsiella pneumoniae and Pseudomonas fluorescens and antifungal activity against Trichophyton simii and T. rubrum. At a concentration of 50 μg/ml, melanin showed high free radical scavenging activity of DPPH (2,2-diphenyl-1-picrylhydrazyl) indicating its antioxidant potential. It showed concentration dependent inhibition of cell proliferation of Human Epidermoid Larynx Carcinoma Cell Line (HEP-2). This study has demonstrated characterization of melanin from basidiomycetes mushroom fungus, Schizophyllum commune and its applications.
Collapse
|
21
|
Nagarajan N, Gunasekaran P, Rajendran P. Genetic characterization, nickel tolerance, biosorption, kinetics, and uptake mechanism of a bacterium isolated from electroplating industrial effluent. Can J Microbiol 2015; 61:297-306. [PMID: 25768053 DOI: 10.1139/cjm-2014-0504] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 11/22/2022]
Abstract
Electroplating industries in Madurai city produce approximately 49,000 L of wastewater and 1200 L of sludge every day revealing 687-5569 ppm of nickel (Ni) with other contaminants. Seventeen Ni-tolerant bacterial strains were isolated from nutrient-enriched effluents. Among them one hyper Ni accumulating strain was scored and identified as Bacillus cereus VP17 on the basis of morphology, biochemical tests, 16S rDNA gene sequencing, and phylogenetic analysis. Equilibrium data of Ni(II) ions using the bacterium as sorbent at isothermal conditions (37 °C) and pH 6 were best adjusted by Langmuir (R(2) = 0.6268) and Freundlich models (R(2) = 0.9505). Experimental validation reveals Ni sorption takes place on a heterogeneous surface of the biosorbent, and predicted metal sorption capacity is 434 ppm. The pseudo-second-order kinetic model fitted the biosorption kinetic data better than the pseudo-first-order kinetic model (R(2) = 0.9963 and 0.3625). Scanning electron microscopy, energy dispersive X-ray, and Fourier transform infrared spectroscopy studies of the bacterial strain with and without Ni(II) ion reveals the biosorption mechanism. The results conclude possibilities of using B. cereus VP17 for Ni bioremediation.
Collapse
Affiliation(s)
- N Nagarajan
- Department of Zoology, Vivekananda College, Tiruvedakam, Madurai - 625 234, Tamil Nadu, India
| | | | | |
Collapse
|
22
|
Ahn M, Han YH, Park JE, Kim S, Lee WC, Lee SJ, Gunasekaran P, Cheong C, Shin SY, Kim HY, Ryu EK, Murugan RN, Kim NH, Bang JK. A new class of peptidomimetics targeting the polo-box domain of Polo-like kinase 1. J Med Chem 2015; 58:294-304. [PMID: 25347203 DOI: 10.1021/jm501147g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 01/16/2023]
Abstract
Recent progress in the development of peptide-derived Polo-like kinase (Plk1) polo-box domain (PBD) inhibitors has led to the synthesis of multiple peptide ligands with high binding affinity and selectivity. However, few systematic analyses have been conducted to identify key Plk1 residues and characterize their interactions with potent Plk1 peptide inhibitors. We performed systematic deletion analysis using the most potent 4j peptide and studied N-terminal capping of the minimal peptide with diverse organic moieties, leading to the identification of the peptidomimetic 8 (AB-103) series with high binding affinity and selectivity. To evaluate the bioavailability of short peptidomimetic ligands, PEGylated 8 series were synthesized and incubated with HeLa cells to test for cellular uptake, antiproliferative activity, and Plk1 kinase inhibition. Finally, crystallographic studies of the Plk1 PBD in complex with peptidomimetics 8 and 22 (AB-103-5) revealed the presence of two hydrogen bond interactions responsible for their high binding affinity and selectivity.
Collapse
Affiliation(s)
- Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute , 804-1, Yangcheong Ri, Ochang, Chungbuk, Cheongwon 363-883, Republic of Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Nisha KD, Navaneethan M, Dhanalakshmi B, Saravana Murali K, Hayakawa Y, Ponnusamy S, Muthamizhchelvan C, Gunasekaran P. Effect of organic-ligands on the toxicity profiles of CdS nanoparticles and functional properties. Colloids Surf B Biointerfaces 2015; 126:407-13. [PMID: 25601096 DOI: 10.1016/j.colsurfb.2014.12.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 03/07/2014] [Revised: 12/17/2014] [Accepted: 12/23/2014] [Indexed: 01/08/2023]
Abstract
CdS nanoparticles are one among the most promising agents for fluorescent imaging. Hence, it is essential to develop new strategies to overcome the cytotoxicity of these nanoparticles. Surface modification is one of the simplest and effective techniques. This paper assesses the effect of surface modification on toxicity of the CdS nanoparticles. Unmodified CdS and surface-modified CdS nanoparticles were synthesized in an aqueous medium using a wet chemical route at room temperature. The surface modification of the CdS nanoparticles with polyvinylpyrrolidone (PVP) and cysteine was confirmed using infrared absorption studies. The diameters of unmodified CdS, PVP-modified CdS, and cysteine-modified CdS nanoparticles were determined using HRTEM. They exhibited luminescence in the range from 500 to 800 nm. The cytotoxic effects of these CdS nanoparticles were investigated in cultures of Vero cells. The results indicated that Vero cell viability was higher for the surface-modified CdS nanoparticles than for the unmodified CdS nanoparticles. The reduction in the toxicity was related to the nature of the capping agents used for the surface modification, and the particle size.
Collapse
Affiliation(s)
- K D Nisha
- Asan Memorial College of Engineering and Technology, Chengalpattu 603 105, Tamil Nadu, India
| | - M Navaneethan
- Research Institute of Electronics, Shizuoka University, 3-5-1, Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan.
| | - B Dhanalakshmi
- Asan Memorial College of Engineering and Technology, Chengalpattu 603 105, Tamil Nadu, India
| | - K Saravana Murali
- King Institute of Preventive Medicine and Research, Guindy, Tamil Nadu, India
| | - Y Hayakawa
- Research Institute of Electronics, Shizuoka University, 3-5-1, Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - S Ponnusamy
- Center for Materials Science and Nanodevices, Department of Physics, SRM University, Kattankulathur 603 203, Tamil Nadu, India.
| | - C Muthamizhchelvan
- Center for Materials Science and Nanodevices, Department of Physics, SRM University, Kattankulathur 603 203, Tamil Nadu, India
| | - P Gunasekaran
- King Institute of Preventive Medicine and Research, Guindy, Tamil Nadu, India
| |
Collapse
|
24
|
Gunasekaran P, Perumal S, Menéndez JC, Mancinelli M, Ranieri S, Mazzanti A. Axial Chirality of 4-Arylpyrazolo[3,4-b]pyridines. Conformational Analysis and Absolute Configuration. J Org Chem 2014; 79:11039-50. [DOI: 10.1021/jo502047n] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Pethaiah Gunasekaran
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Subbu Perumal
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - J. Carlos Menéndez
- Departamento
de Química Orgánica y Farmacéutica, Facultad
de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| | - Michele Mancinelli
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Silvia Ranieri
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department
of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| |
Collapse
|
25
|
Boutselakis C, Forbes SA, Gunasekaran P, Jia M, Beare D, Bindal N, Kok CY, Leung K, Minjie D, Shepherd R, Bamford S, Ward S, Cole C, Teague JW, Stratton M, Campbell P, McDermott U. Abstract 5326: COSMIC: Enhancing the world's knowledge of somatic mutations in human cancer. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-5326] [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: 11/16/2022]
Abstract
Abstract
COSMIC, the Catalogue Of Somatic Mutations In Cancer (http://cancer.sanger.ac.uk) is the world's largest and most comprehensive online resource for exploring the impact of somatic mutations in human cancer. Now running for over 10 years, the 67th release (Oct 2013) describes 1592109 mutations in 947213 tumour samples across 25606 genes. This information is curated manually from the scientific literature, and automatically from genome resequencing consortium data portals. Full curation of the scientific literature provides in-depth understanding of the impact that each gene has in human cancer, and this has been achieved for 127 point-mutated cancer genes, and 185 fusion gene pairs. Curated genes are selected from the Cancer Gene Census (http://cancer.sanger.ac.uk/census), a listing of all genes with substantial evidence implicating them in cancer promotion, currently numbering 513 and updated frequently.
The mutations discovered in the re-sequencing of over 8000 tumour genomes are now present in COSMIC (viewable in isolation from the genic curations, http://cancer.sanger.ac.uk/wgs). In addition, the Sanger has now fully exome sequenced 1015 common cancer cell lines, identifying 1146874 coding mutations annotated for functional significance, and this is available exclusively in COSMIC at (http://cancer.sanger.ac.uk/cell_lines). While COSMIC has focused on point mutations and gene fusions, many other mutation mechanisms cause oncogenesis and these are now being integrated. The 67th COSMIC release includes copy number mutations integrated into the database and major web page views. To allow easy graphical examination of this data, copy number information was reduced to ‘gain’ and ‘loss’ annotations for inclusion in histograms and tables, with much more precise detail available with a further click. Copy number data is available in detail for every gene in COSMIC, and also for every tissue. Exploring cancer via COSMIC’s Cancer Browser (http://cancer.sanger.ac.uk/cosmic/browse/tissue), results not just in a plot of the most mutated genes, but now also a circular genome plot summarizing the copy number gains and losses across all the samples from that tumour type, all explorable in more detail via clicks on the pictures.
As the genomic data increases in COSMIC, it is becoming more important to qualitatively annotate the information, indicating which is more important or significant to oncogenesis. We are now building systems to better highlight known or putative functional mutations, improving the signal-to-noise ratio of cancer genome resequencing.
Citation Format: C Boutselakis, S A. Forbes, P Gunasekaran, M Jia, D Beare, N Bindal, C Y. Kok, K Leung, D Minjie, R Shepherd, S Bamford, S Ward, C Cole, J W. Teague, M Stratton, P Campbell, U McDermott. COSMIC: Enhancing the world's knowledge of somatic mutations in human cancer. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 5326. doi:10.1158/1538-7445.AM2014-5326
Collapse
Affiliation(s)
- C Boutselakis
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - S A. Forbes
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - P Gunasekaran
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - M Jia
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - D Beare
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - N Bindal
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - C Y. Kok
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - K Leung
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - D Minjie
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - R Shepherd
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - S Bamford
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - S Ward
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - C Cole
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - J W. Teague
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - M Stratton
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - P Campbell
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - U McDermott
- The Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| |
Collapse
|
26
|
Ahn M, Rajasekaran G, Gunasekaran P, Ryu EK, Lee GH, Hyun JK, Cheong C, Kim NH, Shin SY, Bang JK. Enhancement of Antibacterial Activity of Short Tryptophan-rich Antimicrobial Peptide Pac-525 by Replacing Trp with His(chx). B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.9.2818] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
27
|
Srinivasrao G, Park JE, Kim S, Ahn M, Cheong C, Nam KY, Gunasekaran P, Hwang E, Kim NH, Shin SY, Lee KS, Ryu E, Bang JK. Design and synthesis of a cell-permeable, drug-like small molecule inhibitor targeting the polo-box domain of polo-like kinase 1. PLoS One 2014; 9:e107432. [PMID: 25211362 PMCID: PMC4161390 DOI: 10.1371/journal.pone.0107432] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 08/09/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Polo-like kinase-1 (Plk1) plays a crucial role in cell proliferation and the inhibition of Plk1 has been considered as a potential target for specific inhibitory drugs in anti-cancer therapy. Several research groups have identified peptide-based inhibitors that target the polo-box domain (PBD) of Plk1 and bind to the protein with high affinity in in vitro assays. However, inadequate proteolytic resistance and cell permeability of the peptides hinder the development of these peptide-based inhibitors into novel therapeutic compounds. METHODOLOGY/PRINCIPAL FINDINGS In order to overcome the shortcomings of peptide-based inhibitors, we designed and synthesized small molecule inhibitors. Among these molecules, bg-34 exhibited a high binding affinity for Plk1-PBD and it could cross the cell membrane in its unmodified form. Furthermore, bg-34-dependent inhibition of Plk1-PBD was sufficient for inducing apoptosis in HeLa cells. Moreover, modeling studies performed on Plk1-PBD in complex with bg-34 revealed that bg-34 can interact effectively with Plk1-PBD. CONCLUSION/SIGNIFICANCE We demonstrated that the molecule bg-34 is a potential drug candidate that exhibits anti-Plk1-PBD activity and possesses the favorable characteristics of high cell permeability and stability. We also determined that bg-34 induced apoptotic cell death by inhibiting Plk1-PBD in HeLa cells at the same concentration as PEGylated 4j peptide, which can inhibit Plk1-PBD activity 1000 times more effectively than bg-34 can in in vitro assays. This study may help to design and develop drug-like small molecule as Plk1-PBD inhibitor for better therapeutic activity.
Collapse
Affiliation(s)
- Ganipisetti Srinivasrao
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Jung-Eun Park
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Sungmin Kim
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Mija Ahn
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Chaejoon Cheong
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Ky-Youb Nam
- Institute for Innovative Cancer Research and Department of Convergence Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Pethaiah Gunasekaran
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Cheongju, Chung-Buk, Republic of Korea
| | - Eunha Hwang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Nam-Hyung Kim
- Molecular Embryology Laboratory, Department of Animal Sciences, Chungbuk National University, Cheongju, Chung-Buk, Republic of Korea
| | - Song Yub Shin
- Department of Bio-Materials, Graduate School and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Kyung S. Lee
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Eunkyung Ryu
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, Republic of Korea
| |
Collapse
|
28
|
Rajni Swamy V, Gunasekaran P, Krishnakumar RV, Srinivasan N, Müller P. Crystal structure of [4-(2-meth-oxy-phen-yl)-3-methyl-1-phenyl-6-tri-fluoro-methyl-1H-pyrazolo-[3,4-b]pyridin-5-yl](thio-phen-2-yl)methanone. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o974-5. [PMID: 25309288 PMCID: PMC4186079 DOI: 10.1107/s1600536814017437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 07/07/2014] [Accepted: 07/29/2014] [Indexed: 11/11/2022]
Abstract
The title compound, C26H18F3N3O2S, a 2-meth-oxy-substituted derivative, is closely related to its 4-methyl- and 4-chloro-substituted analogues and yet displays no structural relationships with them. The thio-phene ring is disorder free and the -CF3 group exhibits disorder, respectively, in contrast and similar to that observed in the 4-methyl- and 4-chloro-substituted derivatives. The torsion angle which defines the twist of the thio-phene ring is -69.6 (2)° (gauche) in the title compound, whereas it is anti-clinal in the 4-methyl- and 4-chloro-substituted derivatives, with respective values of 99.9 (2) and 99.3 (2)°. The absence of disorder in the thio-phene ring facilitates one of its ring C atoms to participate in the lone inter-molecular C-H⋯O hydrogen bond present in the crystal, leading to a characteristic C(5) chain graph-set motif linking mol-ecules related through glides along [010]. An intra-moleculr C-H⋯N hydrogen bond also occurs.
Collapse
Affiliation(s)
- V. Rajni Swamy
- Department of Physics, Thiagarajar College, Madurai 625 009, India
| | - P. Gunasekaran
- School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | | | - N. Srinivasan
- Department of Physics, Thiagarajar College, Madurai 625 009, India
| | - P. Müller
- X-Ray Diffraction Facility, MIT Department of Chemistry, 77 Massachusetts Avenue, Building 2, Room 325, Cambridge, MA, 02139-4307, USA
| |
Collapse
|
29
|
Vishnupriya R, Suresh J, Gunasekaran P, Perumal S, Lakshman PLN. Crystal structure of 2-(4-chloro-phen-yl)-4-(1H-indol-3-yl)-6-phenyl-pyridine-3-carbo-nitrile. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o978. [PMID: 25309290 PMCID: PMC4186124 DOI: 10.1107/s1600536814017693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 11/10/2022]
Abstract
In the title compound, C26H16ClN3, the dihedral angles between the central pyridine ring and the pendant phenyl, chlorobenzene and indole rings are 18.52 (12), 48.97 (11) and 21.20 (10)°, respectively. An intramolecular C—H⋯Nc (c = cyanide) hydrogen bond occurs. In the crystal, inversion dimers linked by pairs of N—H⋯Nc hydrogen bonds generate R22(16) loops.
Collapse
Affiliation(s)
- R Vishnupriya
- Department of Physics, The Madura College, Madurai 625 011, India
| | - J Suresh
- Department of Physics, The Madura College, Madurai 625 011, India
| | - Pethaiah Gunasekaran
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Subbu Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - P L Nilantha Lakshman
- Department of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
| |
Collapse
|
30
|
Sathyavathi S, Manjula A, Rajendhran J, Gunasekaran P. Extracellular synthesis and characterization of nickel oxide nanoparticles from Microbacterium sp. MRS-1 towards bioremediation of nickel electroplating industrial effluent. Bioresour Technol 2014; 165:270-3. [PMID: 24685513 DOI: 10.1016/j.biortech.2014.03.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/04/2014] [Accepted: 03/06/2014] [Indexed: 05/27/2023]
Abstract
In the present study, a nickel resistant bacterium MRS-1 was isolated from nickel electroplating industrial effluent, capable of converting soluble NiSO4 into insoluble NiO nanoparticles and identified as Microbacterium sp. The formation of NiO nanoparticles in the form of pale green powder was observed on the bottom of the flask upon prolonged incubation of liquid nutrient medium containing high concentration of 2000ppm NiSO4. The properties of the produced NiO nanoparticles were characterized. NiO nanoparticles exhibited a maximum absorbance at 400nm. The NiO nanoparticles were 100-500nm in size with unique flower like structure. The elemental composition of the NiO nanoparticles was 44:39. The cells of MRS-1 were utilized for the treatment of nickel electroplating industrial effluent and showed nickel removal efficiency of 95%. Application of Microbacterium sp. MRS-1 would be a potential bacterium for bioremediation of nickel electroplating industrial waste water and simultaneous synthesis of NiO nanoparticles.
Collapse
Affiliation(s)
- S Sathyavathi
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - A Manjula
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - J Rajendhran
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - P Gunasekaran
- Department of Genetics, School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India.
| |
Collapse
|
31
|
Ambardar S, Sangwan N, Manjula A, Rajendhran J, Gunasekaran P, Lal R, Vakhlu J. Identification of bacteria associated with underground parts of Crocus sativus by 16S rRNA gene targeted metagenomic approach. World J Microbiol Biotechnol 2014; 30:2701-9. [PMID: 24989343 DOI: 10.1007/s11274-014-1694-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 06/21/2014] [Indexed: 11/28/2022]
Abstract
Saffron (Crocus sativus L), an autumn-flowering perennial sterile plant, reproduces vegetatively by underground corms. Saffron has biannual corm-root cycle that makes it an interesting candidate to study microbial dynamics in its rhizosphere and cormosphere (area under influence of corm). Culture independent 16S rRNA gene metagenomic study of rhizosphere and cormosphere of Saffron during flowering stage revealed presence of 22 genera but none of the genus was common in all the three samples. Bulk soil bacterial community was represented by 13 genera with Acidobacteria being dominant. In rhizosphere, out of eight different genera identified, Pseudomonas was the most dominant genus. Cormosphere bacteria comprised of six different genera, dominated by the genus Pantoea. This study revealed that the bacterial composition of all the three samples is significantly different (P < 0.05) from each other. This is the first report on the identification of bacteria associated with rhizosphere, cormosphere and bulk soil of Saffron, using cultivation independent 16S rRNA gene targeted metagenomic approach.
Collapse
|
32
|
Ahn M, Jacob B, Gunasekaran P, Murugan RN, Ryu EK, Lee GH, Hyun JK, Cheong C, Kim NH, Shin SY, Bang JK. Poly-lysine peptidomimetics having potent antimicrobial activity without hemolytic activity. Amino Acids 2014; 46:2259-69. [DOI: 10.1007/s00726-014-1778-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 06/04/2014] [Indexed: 12/14/2022]
|
33
|
Sridhar R, Ravanan S, Venugopal JR, Sundarrajan S, Pliszka D, Sivasubramanian S, Gunasekaran P, Prabhakaran M, Madhaiyan K, Sahayaraj A, Lim KHC, Ramakrishna S. Curcumin- and natural extract-loaded nanofibres for potential treatment of lung and breast cancer:in vitroefficacy evaluation. Journal of Biomaterials Science, Polymer Edition 2014; 25:985-98. [DOI: 10.1080/09205063.2014.917039] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
34
|
Anitha C, Kabilan S, Rajinish N, Kumar AS, Krishnan P, Rasikan I, Senthilkumar S, Vincent S, Senthamarai S, Sivasankari S, Gunasekaran P, Sikhamani R, Pushkala M. Molecular characterization of Pseudomonas sp. isolated from lower respiratory tract infection in HIV and non-HIV population by 16S rDNA and ARDRA. BMC Infect Dis 2014. [PMCID: PMC4080358 DOI: 10.1186/1471-2334-14-s3-p17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
35
|
Prasanna P, Gunasekaran P, Perumal S, Menéndez JC. A catalyst-free multicomponent domino sequence for the diastereoselective synthesis of (E)-3-[2-arylcarbonyl-3-(arylamino)allyl]chromen-4-ones. Beilstein J Org Chem 2014; 10:459-65. [PMID: 24611080 PMCID: PMC3944430 DOI: 10.3762/bjoc.10.43] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 10/29/2013] [Accepted: 01/21/2014] [Indexed: 12/19/2022] Open
Abstract
The three-component domino reactions of (E)-3-(dimethylamino)-1-arylprop-2-en-1-ones, 3-formylchromone and anilines under catalyst-free conditions afforded a library of novel (E)-3-(2-arylcarbonyl-3-(arylamino)allyl)-4H-chromen-4-ones in good to excellent yields and in a diastereoselective transformation. This transformation generates one C–C and one C–N bond and presumably proceeds via a reaction sequence comprising a Michael-type addition–elimination reaction, a nucleophilic attack of an enamine to a carbonyl reminiscent of one of the steps of the Bayllis–Hilman condensation, and a final deoxygenation. The deoxygenation is assumed to be induced by carbon monoxide resulting from the thermal decomposition of the dimethylformamide solvent.
Collapse
Affiliation(s)
- Pitchaimani Prasanna
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625 021, Tamilnadu, India
| | - Pethaiah Gunasekaran
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625 021, Tamilnadu, India
| | - Subbu Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625 021, Tamilnadu, India
| | - J Carlos Menéndez
- Departamento de Química Orgánica and Farmacéutica, Facultad de Farmacia, Universidad Complutense, 28040 Madrid, Spain
| |
Collapse
|
36
|
Vanitha P, Uma C, Suganya N, Bhakkiyalakshmi E, Suriyanarayanan S, Gunasekaran P, Sivasubramanian S, Ramkumar KM. Modulatory effects of morin on hyperglycemia by attenuating the hepatic key enzymes of carbohydrate metabolism and β-cell function in streptozotocin-induced diabetic rats. Environ Toxicol Pharmacol 2014; 37:326-335. [PMID: 24384280 DOI: 10.1016/j.etap.2013.11.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 11/18/2013] [Accepted: 11/19/2013] [Indexed: 06/03/2023]
Abstract
The present study was aimed to evaluate the effect of morin on blood glucose, insulin level, hepatic glucose regulating enzyme activities and glycogen level in experimental diabetes. Diabetes mellitus was induced by a single intraperitoneal injection of streptozotocin (STZ) (50 mg/kg b.w.). Five days after STZ injection, diabetic rats received morin (25 and 50 mg/kg b.w.) orally for 30 days. Glibenclamide was used as reference drug. Morin treatment significantly reduced the blood glucose and improved the serum insulin levels. Further, a dose-dependent reduction in glucose-6-phosphatase and fructose-1,6-bisphosphatase was observed along with the increase in liver hexokinase and glucose-6-phosphate dehydrogenase activities. Morin supplement were found to be effective in preserving the normal histological appearance of pancreatic islets as well as to preserve insulin-positive β-cells in STZ-rats. Therefore, these findings suggest that morin displays beneficial effects in the treatment of diabetes, mediated through the regulation of carbohydrate metabolic enzyme activities.
Collapse
Affiliation(s)
- P Vanitha
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur 603 203, Tamilnadu, India
| | - C Uma
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur 603 203, Tamilnadu, India
| | - N Suganya
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur 603 203, Tamilnadu, India
| | - E Bhakkiyalakshmi
- Department of Biotechnology, School of Bioengineering, SRM University, Kattankulathur 603 203, Tamilnadu, India
| | - S Suriyanarayanan
- Department of Water and Health, JSS University, Mysore 570 015, Karnataka, India
| | - P Gunasekaran
- The King Institute of Preventive Medicine and Research, Guindy, Chennai 600 032, Tamilnadu, India
| | - S Sivasubramanian
- The King Institute of Preventive Medicine and Research, Guindy, Chennai 600 032, Tamilnadu, India
| | - K M Ramkumar
- SRM Research Institute, SRM University, Kattankulathur 603 203, Tamilnadu, India.
| |
Collapse
|
37
|
Gunasekaran P, Prasanna P, Perumal S. l-Proline-catalyzed three-component domino reactions for the synthesis of highly functionalized pyrazolo[3,4-b]pyridines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
38
|
Ramkumar KM, Vijayakumar RS, Vanitha P, Suganya N, Manjula C, Rajaguru P, Sivasubramanian S, Gunasekaran P. Protective effect of gallic acid on alloxan-induced oxidative stress and osmotic fragility in rats. Hum Exp Toxicol 2013; 33:638-49. [PMID: 24064907 DOI: 10.1177/0960327113504792] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [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: 11/16/2022]
Abstract
In the present study, we investigated the antioxidant effect of gallic acid (GA) on membrane lipid peroxidation and osmotic fragility in alloxan-induced diabetic Wistar rats. GA was administered orally at doses of 5, 10, and 20 mg/kg body weight for 45 days, after which liver and kidney tissues were analyzed for the degree of lipid peroxidation, reduced glutathione, and the activities of antioxidants such as catalase, superoxide dismutase, and glutathione peroxidase. Administration of GA to alloxan-induced diabetic rats reduced the blood glucose level with an increase in the level of insulin. Liver and kidney tissues from diabetic animals exhibited disturbances in antioxidant defense compared with normal rats. GA at a dose of 20 mg/kg b.w. showed a significant effect than that of the other doses. In addition, the results revealed that GA protected the integrity of erythrocyte membrane in diabetic rats as demonstrated by lower percentage of hemolysis and resistance to hydrogen peroxide-induced peroxidation. The anti-hyperglycemic activity of GA in alloxan-induced diabetic rats was also comparable with glibenclamide, a reference drug. These results suggest that GA could provide a beneficial effect on diabetes by decreasing oxidative stress-related diabetic complications.
Collapse
Affiliation(s)
- K M Ramkumar
- SRM Research Institute, SRM University, Kattankulathur, Chennai, Tamil Nadu, India
| | - R S Vijayakumar
- Institute of Biotechnology and Pharmaceutical Research, The National Health Research Institutes, Zhunan, Miaoli County, Taiwan
| | - P Vanitha
- SRM Research Institute, SRM University, Kattankulathur, Chennai, Tamil Nadu, India
| | - N Suganya
- SRM Research Institute, SRM University, Kattankulathur, Chennai, Tamil Nadu, India
| | - C Manjula
- Department of Biotechnology, Anna University-BIT Campus, Tiruchirappalli, Tamil Nadu, India
| | - P Rajaguru
- Department of Biotechnology, Anna University-BIT Campus, Tiruchirappalli, Tamil Nadu, India
| | - S Sivasubramanian
- King Institute of Preventive Medicine and Research, Guindy, Chennai, Tamil Nadu, India
| | - P Gunasekaran
- King Institute of Preventive Medicine and Research, Guindy, Chennai, Tamil Nadu, India
| |
Collapse
|
39
|
Thangam R, Suresh V, Asenath Princy W, Rajkumar M, SenthilKumar N, Gunasekaran P, Rengasamy R, Anbazhagan C, Kaveri K, Kannan S. C-Phycocyanin from Oscillatoria tenuis exhibited an antioxidant and in vitro antiproliferative activity through induction of apoptosis and G0/G1 cell cycle arrest. Food Chem 2013; 140:262-72. [DOI: 10.1016/j.foodchem.2013.02.060] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 02/07/2013] [Accepted: 02/14/2013] [Indexed: 12/21/2022]
|
40
|
Prasanna P, Kumar SV, Gunasekaran P, Perumal S. Facile three-component domino reactions for the synthesis of 2-arylimidazo[1,2-a]pyridines and 2-arylimidazo[2,1-a]isoquinolines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.126] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
41
|
Gunasekaran P, Prasanna P, Perumal S, Almansour AI. ZnCl2-catalyzed three-component domino reactions for the synthesis of pyrano[3,2-c]quinolin-5(6H)-ones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
42
|
Babu VN, Thangam R, Kannan S, Gunasekaran P. Synthesis, Characterization and in Vitro Anticancer Activity of DOX-Loaded Copper Oxide Nanoparticles Targeting Breast Cancer. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt081.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
43
|
Asraf SS, Rajnish K, Gunasekaran P. Genomics Perspectives of Bioethanol Producing Zymomonas Mobilis. Bioinformatics 2013. [DOI: 10.4018/978-1-4666-3604-0.ch070] [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: 11/09/2022] Open
Abstract
In recent years, there has been continuous increase in demand for fossil fuels that has led to the need for new potential fuel sources. Biofuels, in particular ethanol, are of high interest because of dwindling fossil fuels. Among the ethanol producers, Zymomonas mobilis has acquired greater interest because it is a renewable source of bioethanol. Zymomonas mobilis is an aerotolerant, gram-negative, ethanol producing bacterium that shows high ethanol yield, tolerance, and greater productivity. This chapter focuses on recent efforts made to engineer Z. mobilis, transcriptomic, genome-based metabolomic studies, and bioinformatics exploitation of the available genomic data for the production of bioethanol. Recently, several bioinformatics tools have been used to predict the functional properties of the carbohydrate active ethanologenic enzymes in Z. mobilis. A number of processes were used to study the functional properties of the ethanologenic enzymes of Z. mobilis. Thus, functional genomics seeks to apply technologies that would help to improve the production of bioethanol by Z. mobilis.
Collapse
|
44
|
Mangayarkarasi V, Prema A, Gunasekaran P, Babu BVS, Kaveri K. A unique human rotavirus (non vaccine) G9P4 genotype infection in a child with gastroenteritis. Indian Pediatr 2013; 49:569-71. [PMID: 22885438 DOI: 10.1007/s13312-012-0118-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Group A Rotaviruses with serotypes G1-G4 and G9 are the common Rotavirus types of clinical importance. This study aimed at determining the different Rotavirus genotypes in stool sample of children below 5 years. A total of 300 children with acute gastroenteritis were tested for group specific VP6 antigen of group A Rotaviruses by Enzyme Linked Immunosorbent Assay. 47 of these samples were positive for Rotavirus antigen. Out of these, 20 positive samples were subjected to Reverse Transcriptase Polymerase Chain Reaction for genotyping. The identified genotypes were G9P8, G1P8, G2P4, G9P4 (non-vaccine genotype), G1P6, and G1 (P types not identified in 5 samples).
Collapse
Affiliation(s)
- V Mangayarkarasi
- Department of Pediatrics, SRM MCH and RC, Chennai, Tamil Nadu, India.
| | | | | | | | | |
Collapse
|
45
|
Gunasekaran P, Indumathi S, Perumal S. l-Proline-catalyzed three-component domino reactions in the regioselective synthesis of novel densely functionalized pyrazolo[3,4-b]pyridines. RSC Adv 2013. [DOI: 10.1039/c3ra00136a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
46
|
Rajni Swamy V, Krishnakumar RV, Srinivasan N, Gunasekaran P, Perumal S. 5-Benzoyl-2-(1 H-indol-3-yl)-4-[4-(propan-2-yl)phenyl]-4,5-dihydrofuran-3-carbonitrile. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o3441. [PMID: 23476257 PMCID: PMC3589021 DOI: 10.1107/s1600536812046764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 11/13/2012] [Indexed: 11/10/2022]
Abstract
In the title compound, C29H24N2O2, the hydrofuran ring is twisted with puckering parameters Q = 0.1553 (16) Å and ϕ = 305.0 (6)°. In the crystal, the graph-set motifs of the interaction pattern are an R22(16) motif involving dimers through N—H⋯N hydrogen bonds across centres of inversion and a C(6) motif through C—H⋯O hydrogen-bond between glide-related molecules. Together, these generate [101] ladder-like chains.
Collapse
|
47
|
Viji VT, Babu MM, Velmurugan S, Kumaran T, Anand SB, Gunasekaran P, Citarasu T. Virulence Factors and Molecular cloning of Outer Membrane Protein (OMP) gene from virulent Aeromonas hyrophila isolated from infected gold fish Carassius auratus. ACTA ACUST UNITED AC 2012. [DOI: 10.3329/bjm.v28i2.11819] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aeromonas hyrophila strains AHV1, AHV2 and AH3 were isolated and identified from Muscle tissue, intestine, body fluid and gills of infected gold fish Carassius auratus. In order to study their virulence, LD50 tests against normal gold fish, proteolytic, haemolytic and challenge studies were performed. The virulence studies revealed that, both AHV1 and AHV2 strains are highly positive for proteolytic and haemolytic properties. The LD50 data showed that, the fish C. auratus are highly susceptible to A. hyrophila strains AHV1 and AHV2 at cent percent lethal rate. The survival of C. auratus significantly (P<0.05) decreased when challenged with virulent strains of A. hydrophila AHV1 and AHV2. The outer membrane protein (OMP-TS) gene was successfully amplified generating an the amplicon size of 1008 bp. The amplified product from the genomic DNA of AHV1 strain was cloned in to pTZ57R/T vector, transformed into DH5? cells and sequenced. The sequenced clone is resembling to various A. hydrophila isolates and submitted to NCBI GenBank database (accession no:HQ331525). DOI: http://dx.doi.org/10.3329/bjm.v28i2.11819 Bangladesh J Microbiol, Volume 28, Number 2, December 2011, pp 70-75
Collapse
|
48
|
Suresh J, Vishnupriya R, Gunasekaran P, Perumal S, Lakshman PLN. (±)- trans-5-Benzoyl-4-(3-bromophenyl)-2-(1 H-indol-3-yl)-4,5-dihydrofuran-3-carbonitrile. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2397. [PMID: 22904854 PMCID: PMC3414321 DOI: 10.1107/s1600536812030073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Accepted: 07/02/2012] [Indexed: 11/10/2022]
Abstract
The furan ring in the title compound, C26H17BrN2O2, adopts a twisted envelope conformation. The molecular structure is stabilized by an intramolecular C—H⋯O interaction which generates an S(6) ring motif. The crystal packing is stabilized by N—H⋯O and C—H⋯Br interactions, generating an R22(16) ring motif and a C(12) linear chain motif, respectively. Weak C—H⋯π bonding is also observed.
Collapse
|
49
|
Gunasekaran P, Krishnasamy K, Arunagiri K, Sambasivam M, Lakshmipathy M, Arunpon, Fathima SG. Genetic analysis of HA gene of pandemic H1N1 2009 influenza viruses circulating in India. Indian J Med Microbiol 2012; 30:346-9. [DOI: 10.4103/0255-0857.99500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
50
|
Suresh J, Vishnupriya R, Gunasekaran P, Perumal S, Lakshman PLN. (±)-trans-5-Benzoyl-2-(1H-indol-3-yl)-4-phenyl-4,5-dihydro-furan-3-carbonitrile. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1576. [PMID: 22590433 PMCID: PMC3344671 DOI: 10.1107/s1600536812018430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2012] [Accepted: 04/25/2012] [Indexed: 05/31/2023]
Abstract
The furan ring in the title compound, C(26)H(18)N(2)O(2), is twisted about the C(H)-C(H) bond. The mol-ecular structure is stabilized by an intra-molecular C-H⋯O inter-action, which generates an S(6) ring motif. The presence of N-H⋯N hydrogen bonds leads to inversion dimers, which are stabilized in the crystal packing by C-H⋯O and C-H⋯π inter-actions, forming layers that stack along the a axis.
Collapse
Affiliation(s)
- J. Suresh
- Department of Physics, The Madura College, Madurai 625 011, India
| | - R. Vishnupriya
- Department of Physics, The Madura College, Madurai 625 011, India
| | - P. Gunasekaran
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - S. Perumal
- Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - P. L. Nilantha Lakshman
- Department of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka
| |
Collapse
|