1
|
Amobonye A, Singh S, Mukherjee K, Jobichen C, Qureshi IA, Pillai S. Structural and functional insights into fungal glutaminase using a computational approach. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
2
|
Devi P, Kukkar D, Kaur M, Thakur A, Kim KH, Kukkar P, Kaur K, Kaur H. Conjugate of graphene quantum dots and glutaminase for the sensing of L-glutamine: Electrochemical vs. fluorescent sensing approaches. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
3
|
Mostafa YS, Alamri SA, Alfaifi MY, Alrumman SA, Elbehairi SEI, Taha TH, Hashem M. L-Glutaminase Synthesis by Marine Halomonas meridiana Isolated from the Red Sea and Its Efficiency against Colorectal Cancer Cell Lines. Molecules 2021; 26:molecules26071963. [PMID: 33807313 PMCID: PMC8037810 DOI: 10.3390/molecules26071963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/27/2021] [Accepted: 03/28/2021] [Indexed: 12/14/2022] Open
Abstract
L-glutaminase is an important anticancer agent that is used extensively worldwide by depriving cancer cells of L-glutamine. The marine bacterium, Halomonas meridian was isolated from the Red Sea and selected as the more active L-glutaminase-producing bacteria. L-glutaminase fermentation was optimized at 36 h, pH 8.0, 37 °C, and 3.0% NaCl, using glucose at 1.5% and soybean meal at 2%. The purified enzyme showed a specific activity of 36.08 U/mg, and the molecular weight was found to be 57 kDa by the SDS-PAGE analysis. The enzyme was highly active at pH 8.0 and 37 °C. The kinetics’ parameters of Km and Vmax were 12.2 × 10−6 M and 121.95 μmol/mL/min, respectively, which reflects a higher affinity for its substrate. The anticancer efficiency of the enzyme showed significant toxic activity toward colorectal adenocarcinoma cells; LS 174 T (IC50 7.0 μg/mL) and HCT 116 (IC50 13.2 μg/mL). A higher incidence of cell death was observed with early apoptosis in HCT 116 than in LS 174 T, whereas late apoptosis was observed in LS 174 T more than in HCT 116. Also, the L-glutaminase induction nuclear fragmentation in HCT 116 was more than that in the LS 174T cells. This is the first report on Halomonas meridiana as an L-glutaminase producer that is used as an anti-colorectal cancer agent.
Collapse
Affiliation(s)
- Yasser S. Mostafa
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
- Correspondence:
| | - Saad A. Alamri
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
- Prince Sultan Bin Abdulaziz Center for Environmental and Tourism Research and Studies, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Mohammad Y. Alfaifi
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
| | - Sulaiman A. Alrumman
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
| | - Serag Eldin I. Elbehairi
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
- Cell Culture Lab, Egyptian Organization for Biological Products and Vaccines, P.O. Box 12311, Giza, Egypt
| | - Tarek H. Taha
- Environmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research & Technological Applications, P.O. Box 21934, Alexandria, Egypt;
| | - Mohamed Hashem
- Department of Biology, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; (S.A.A.); (M.Y.A.); (S.A.A.); (S.E.I.E.); (M.H.)
- Department of Botany and Microbiology, Faculty of Science, Assiut University, P.O. Box 61413, Assiut, Egypt
| |
Collapse
|
4
|
Munir S, Hussain S, Park SY. Patterned Photonic Array Based on an Intertwined Polymer Network Functionalized with a Nonenzymatic Moiety for the Visual Detection of Glucose. ACS APPLIED MATERIALS & INTERFACES 2019; 11:37434-37441. [PMID: 31544450 DOI: 10.1021/acsami.9b10316] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A patterned photonic array chip based on an intertwined polymer network (IPN) is proposed for the visual detection of glucose. The IPN networks are composed of photonic and poly(acrylic acid) (PAA) networks. Aminophenylboronic acid, as a nonenzymatic glucose-responsive moiety that can covalently bond to glucose at alkaline pH, forming tetragonal complexes, is immobilized in the PAA network; in hydrogels, this bonding generates Donnan osmotic pressure, resulting in a volumetric increase of the photonic IPN and reflected color change. The photonic band gap wavelength linearly increases with the glucose concentration (in the 1-12 mM range), with a limit of detection of 0.35 mM. The dots of the photonic IPN array respond independently, with high sensitivity and stability, to glucose via color changes; different glucose levels, from hypo- to hyperglycemia, can be visually detected in this way. Serum samples spiked with different glucose concentrations were tested for practical evaluation of the chip. The proposed chip could be utilized as a new biosensor platform for cost-effective and easy visual detection in remote areas, without the need of advanced instruments or technology.
Collapse
Affiliation(s)
- Sundas Munir
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory , Kyungpook National University , Daegu 41566 , Republic of Korea
| | - Saddam Hussain
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory , Kyungpook National University , Daegu 41566 , Republic of Korea
| | - Soo-Young Park
- School of Applied Chemical Engineering, Polymeric Nano Materials Laboratory , Kyungpook National University , Daegu 41566 , Republic of Korea
| |
Collapse
|
5
|
Amobonye A, Singh S, Pillai S. Recent advances in microbial glutaminase production and applications-a concise review. Crit Rev Biotechnol 2019; 39:944-963. [PMID: 31327254 DOI: 10.1080/07388551.2019.1640659] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This article focuses on significant advances in the production and applications of microbial glutaminases and provides insight into the structures of different glutaminases. Glutaminases catalyze the deamidation of glutamine to glutamic acid, and this unique ability forms the basis of their applications in various industries such as pharmaceutical and food organizations. Microbial glutaminases from bacteria, actinomycetes, yeast, and fungi are of greater significance than animal glutaminases because of their stability, affordability, and ease of production. Owing to these notable benefits, they are considered to possess considerable potential in anticancer and antiviral therapy, flavor enhancers in oriental foods, biosensors and in the production of a nutraceutical theanine. This review also aims to fully explore the potential of microbial glutaminases and to set the pace for future prospects.
Collapse
Affiliation(s)
- Ayodeji Amobonye
- a Department of Biotechnology and Food Technology, Faculty of Applied Sciences , Durban University of Technology , Durban , South Africa
| | - Suren Singh
- a Department of Biotechnology and Food Technology, Faculty of Applied Sciences , Durban University of Technology , Durban , South Africa
| | - Santhosh Pillai
- a Department of Biotechnology and Food Technology, Faculty of Applied Sciences , Durban University of Technology , Durban , South Africa
| |
Collapse
|