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Suriyaamporn P, Dechsri K, Charoenying T, Ngawhirunpat T, Rojanarata T, Patrojanasophon P, Opanasopit P, Pamornpathomkul B. Multiple strategies approach: A novel crosslinked hydrogel forming chitosan-based microneedles chemowrap patch loaded with 5-fluorouracil liposomes for chronic wound cancer treatment. Int J Biol Macromol 2024:134973. [PMID: 39182897 DOI: 10.1016/j.ijbiomac.2024.134973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 07/27/2024] [Accepted: 08/20/2024] [Indexed: 08/27/2024]
Abstract
Untreated or poorly managed chronic wounds can progress to skin cancer. Topically applied 5-fluorouracil (5-FU), a nonspecific cytostatic agent, can cause various side effects. Its high polarity also results in low cell membrane affinity and bioavailability. Hydrogel, used for its occlusive effect, is one platform for treating chronic wounds combined with PEGylated liposomes (LPs), developed to increase drug-skin affinity. This research aimed to develop a novel hydrogel forming chitosan-based microneedles (HFM) chemowrap patch containing 5-FU PEGylated LPs, improving 5-FU efficiency for pre-carcinogenic and carcinogenic skin lesions. The results indicated that the 5-FU-PEGylated LPs-loaded HFM chemowrap patch exhibited desirable physical and mechanical characteristics with complete penetration ability. Furthermore, in vivo skin permeation studies demonstrated the highest percentage of 5-FU permeated the skin (42.06 ± 11.82 %) and skin deposition (75.90 ± 1.13 %) compared to the other treatments, with demonstrated superior percentages of complete wound healing in in vivo (47.00 ± 5.77 % wound healing at day 7) and in NHF cells (92.79 ± 7.15 % at 48 h). Furthermore, 5-FU-PEGylated LPs-loaded HFM chemowrap patches exhibit efficient anticancer activity while maintaining safety for normal cells. The results also show that the developed formulation of a 5-FU-PEGylated LPs-loaded HFM chemowrap patch could enhance apoptosis higher than that of the 5-FU solution. Consequently, 5-FU PEGylated LPs-loaded HFM chemowrap patch represented a promising drug delivery approach for treating pre-carcinogenic and carcinogenic skin lesions.
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Affiliation(s)
- Phuvamin Suriyaamporn
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Koranat Dechsri
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Thapakorn Charoenying
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Tanasait Ngawhirunpat
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Theerasak Rojanarata
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Prasopchai Patrojanasophon
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Praneet Opanasopit
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Boonnada Pamornpathomkul
- Pharmaceutical Development of Green Innovations Group (PDGIG), Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand.
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2
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Li S, Li X, Yang X, Lei Y, He M, Xiang X, Wu Q, Liu H, Wang J, Wang Q. Corilagin enhances the anti-tumor activity of 5-FU by downregulating the expression of GRP 78. Sci Rep 2023; 13:22661. [PMID: 38114593 PMCID: PMC10730900 DOI: 10.1038/s41598-023-49604-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 12/10/2023] [Indexed: 12/21/2023] Open
Abstract
Colorectal cancer is one of the most common malignancies worldwide. Although initially effective, patients who receive chemotherapy ultimately experience various complications and develop chemo-resistance, leading to cancer recurrence. Therefore, we aimed to find a drug with good efficacy and low toxicity that could enhance the treatment with 5-Fluorouracil (a commonly used clinical drug) and reduce its dosing. Corilagin, an anti-tumor natural product, has received widespread attention. Glucose regulated protein 78 (GRP78) is overexpressed in colorectal cancer cells and plays a key role in the proliferation, migration and drug resistance of cancer cells. Importantly, GRP78 can affect the apoptosis induced by 5-fluorouracil in CRC cells. In the present study, we determined the synergistic anti-tumor activity of the combination treatment by cell proliferation assay, apoptosis assay, fluorescent staining, cell cycle analysis, WB and PCR assays. This synergistic effect was associated with S-phase blockade, intracellular reactive oxygen species production and downregulation of GRP78. Taken together, our results indicate that Corilagin acts as a potentiator of 5-fluorouracil and may have therapeutic potential for patients with CRC.
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Grants
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 2022KYCX1-A04 the Scientific Research and Innovation Fund of Wuhan Asia General Hospital
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20YJA880053 2020 General Planning Fund Project for Humanities and Social Sciences of the Ministry of Education, China
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- 20D026 Key research project of philosophy and social sciences of Hubei Provincial Department of Education in 2020
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
- OHIC2022G05 Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology
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Affiliation(s)
- Simin Li
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xinquan Li
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiliang Yang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Yumeng Lei
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Mingxin He
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiaochen Xiang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Qingming Wu
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Hongyun Liu
- School of Basic Medicine, Hubei University of Science and Technology, Wuhan, 437100, China.
| | - Jiadun Wang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China.
| | - Qiang Wang
- Institute of Infection, Immunology and Tumor Microenvironment, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Medical College, Wuhan Asia General Hospital, Wuhan University of Science and Technology, Wuhan, 430065, China.
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3
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Pettersen CHH, Samdal H, Sætrom P, Wibe A, Hermansen E, Schønberg SA. The Salmon Oil OmeGo Reduces Viability of Colorectal Cancer Cells and Potentiates the Anti-Cancer Effect of 5-FU. Mar Drugs 2023; 21:636. [PMID: 38132957 PMCID: PMC10744414 DOI: 10.3390/md21120636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/08/2023] [Accepted: 12/09/2023] [Indexed: 12/23/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common cancer types worldwide. Chemotherapy is toxic to normal cells, and combinatory treatment with natural well-tolerated products is being explored. Some omega-3 polyunsaturated fatty acids (n-3 PUFAs) and marine fish oils have anti-cancer effects on CRC cells. The salmon oil OmeGo (Hofseth BioCare) contains a spectrum of fatty acids, including the n-3 PUFAs docosahexaenoic acid (DHA) and eicosahexaenoic acid (EPA). We explored a potential anti-cancer effect of OmeGo on the four CRC cell lines DLD-1, HCT-8, LS411N, and LS513, alone and in combination with the chemotherapeutic agent 5-Fluorouracil (5-FU). Screening indicated a time- and dose-dependent effect of OmeGo on the viability of the DLD-1 and LS513 CRC cell lines. Treatment with 5-FU and OmeGo (IC20-IC30) alone indicated a significant reduction in viability. A combinatory treatment with OmeGo and 5-FU resulted in a further reduction in viability in DLD-1 and LS513 cells. Treatment of CRC cells with DHA + EPA in a concentration corresponding to the content in OmeGo alone or combined with 5-FU significantly reduced viability of all four CRC cell lines tested. The lowest concentration of OmeGo reduced viability to a higher degree both alone and in combination with 5-FU compared to the corresponding concentrations of DHA + EPA in three of the cell lines. Results suggest that a combination of OmeGo and 5-FU could have a potential as an alternative anti-cancer therapy for patients with CRC.
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Affiliation(s)
- Caroline H. H. Pettersen
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (H.S.); (P.S.); (A.W.); (S.A.S.)
- Department of Surgery, St. Olav’s University Hospital, 7006 Trondheim, Norway
- Hofseth BioCare, Kipervikgata 13, 6003 Ålesund, Norway;
| | - Helle Samdal
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (H.S.); (P.S.); (A.W.); (S.A.S.)
- Department of Surgery, St. Olav’s University Hospital, 7006 Trondheim, Norway
| | - Pål Sætrom
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (H.S.); (P.S.); (A.W.); (S.A.S.)
- Department of Computer Science, Faculty of Information Technology and Electrical Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
- Bioinformatics Core Facility—BioCore, Norwegian University of Science and Technology (NTNU), 7006 Trondheim, Norway
- K.G. Jebsen Center for Genetic Epidemiology, Norwegian University of Science and Technology (NTNU), 7006 Trondheim, Norway
| | - Arne Wibe
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (H.S.); (P.S.); (A.W.); (S.A.S.)
- Department of Surgery, St. Olav’s University Hospital, 7006 Trondheim, Norway
| | | | - Svanhild A. Schønberg
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway; (H.S.); (P.S.); (A.W.); (S.A.S.)
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4
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Ndemazie NB, Bulusu R, Zhu XY, Frimpong EK, Inkoom A, Okoro J, Ebesoh D, Rogers S, Han B, Agyare E. Evaluation of Anticancer Activity of Zhubech, a New 5-FU Analog Liposomal Formulation, against Pancreatic Cancer. Int J Mol Sci 2023; 24:4288. [PMID: 36901721 PMCID: PMC10002367 DOI: 10.3390/ijms24054288] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/10/2023] [Accepted: 02/18/2023] [Indexed: 02/24/2023] Open
Abstract
Pancreatic cancer is projected to be the second leading cause of cancer-related death by 2030 in the US. The benefits of the most common systemic therapy for various pancreatic cancers have been masked by high drug toxicities, adverse reactions, and resistance. The use of nanocarriers such as liposomes to overcome these unwanted effects has become very popular. This study aims to formulate 1,3-bistertrahydrofuran-2yl-5FU (MFU)-loaded liposomal nanoparticles (Zhubech) and to evaluate itsstability, release kinetics, in vitro and in vivo anticancer activities, and biodistribution in different tissues. Particle size and zeta potential were determined using a particle size analyzer, while cellular uptake of rhodamine-entrapped liposomal nanoparticles (Rho-LnPs) was determined by confocal microscopy. Gadolinium hexanoate (Gd-Hex) was synthesized and entrapped into the liposomal nanoparticle (LnP) (Gd-Hex-LnP), as a model contrast agent, to evaluate gadolinium biodistribution and accumulation by LnPs in vivo using inductively coupled plasma mass spectrometry (ICP-MS). The mean hydrodynamic diameters of blank LnPs and Zhubech were 90.0 ± 0.65 nm and 124.9 ± 3.2 nm, respectively. The hydrodynamic diameter of Zhubech was found to be highly stable at 4 °C and 25 °C for 30 days in solution. In vitro drug release of MFU from Zhubech formulation exhibited the Higuchi model (R2 value = 0.95). Both Miapaca-2 and Panc-1 treated with Zhubech showed reduced viability, two- or four-fold lower than that of MFU-treated cells in 3D spheroid (IC50Zhubech = 3.4 ± 1.0 μM vs. IC50MFU = 6.8 ± 1.1 μM) and organoid (IC50Zhubech = 9.8 ± 1.4 μM vs. IC50MFU = 42.3 ± 1.0 μM) culture models. Confocal imaging confirmed a high uptake of rhodamine-entrapped LnP by Panc-1 cells in a time-dependent manner. Tumor-efficacy studies in a PDX bearing mouse model revealed a more than 9-fold decrease in mean tumor volumes in Zhubech-treated (108 ± 13.5 mm3) compared to 5-FU-treated (1107 ± 116.2 mm3) animals, respectively. This study demonstrates that Zhubech may be a potential candidate for delivering drugs for pancreatic cancer treatment.
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Affiliation(s)
- Nkafu Bechem Ndemazie
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Raviteja Bulusu
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Xue You Zhu
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Esther Kesewaah Frimpong
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Andriana Inkoom
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Joy Okoro
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Dexter Ebesoh
- Faculty of Health Sciences, University of Buea, Buea P.O. Box 63, Cameroon
| | - Sherise Rogers
- Department of Medicine, University of Florida, Gainesville, FL 32608, USA
| | - Bo Han
- Department of Surgery, Keck School of Medicine University of South California, Los Angeles, CA 90033, USA
| | - Edward Agyare
- College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
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Darwish NM, Elshaer MMA, Almutairi SM, Chen TW, Mohamed MO, Ghaly WBA, Rasheed RA. Omega-3 Polyunsaturated Fatty Acids Provoke Apoptosis in Hepatocellular Carcinoma through Knocking Down the STAT3 Activated Signaling Pathway: In Vivo and In Vitro Study. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27093032. [PMID: 35566382 PMCID: PMC9103886 DOI: 10.3390/molecules27093032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 11/28/2022]
Abstract
Hepatocellular carcinoma (HCC) is a common type of liver cancer and is a leading cause of death worldwide. Signal transducer and activator of transcription 3 (STAT3) is involved in HCC progression, migration, and suppression of apoptosis. This study investigates the apoptotic effect of the dietary antioxidant (n-3 PUFAs) on HepG2 cells and analyzes the underlying molecular mechanisms of this effect both in vivo and in vitro. In vivo study: Seventy-five adult male albino rats were divided into three groups (n = 25): Group I (control): 0.9% normal saline, intraperitoneal. Group II: N-Nitrosodiethylamine (200 mg/kg b.wt) intraperitoneal, followed by phenobarbital 0.05% in drinking water. Group III: as group II followed by n-3 PUFAs intubation (400 mg/kg/day). In vivo study: liver specimens for biochemical, histopathological, and immunohistochemical examination. In vitro study: MTT assay, cell morphology, PCR, Western blot, and immunohistochemical analysis. n-3 PUFAs significantly improved the histopathologic features of HCC and decreased the expression of anti-apoptotic proteins. Further, HepG2 cells proliferation was suppressed through inhibition of the STAT3 signaling pathway, cyclin D1, and Bcl-2 activity. Here we report that n-3 PUFAs may be an ideal cancer chemo-preventive candidate by targeting STAT3 signaling, which is involved in cell proliferation and apoptosis.
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Affiliation(s)
- Noura M. Darwish
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
- Ministry of Health Laboratories, Tanta 16335, Egypt
- Correspondence: (N.M.D.); (R.A.R.); Tel.: +20-1096264335 (N.M.D.); +20-1001022257 (R.A.R.)
| | - Mohamed M. A. Elshaer
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt;
- Department of Clinical Pharmacology, Faculty of Medicine, King Salman International University, South Sinai 46511, Egypt
| | - Saeedah Musaed Almutairi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Tse-Wei Chen
- Department of Materials, Imperial College London, London SW7 2AZ, UK;
| | - Mohamed Othman Mohamed
- Anatomy Department, Faculty of Medicine, King Salman International University, South Sinai 46511, Egypt;
| | - Wael B. A. Ghaly
- Physiology Department, Faculty of Medicine, Fayoum University, Fayoum 63511, Egypt;
- Physiology Department, Faculty of Medicine, King Salman International University, South Sinai 46511, Egypt
| | - Rabab Ahmed Rasheed
- Histology & Cell Biology Department, Faculty of Medicine, King Salman International University, South Sinai 46511, Egypt
- Correspondence: (N.M.D.); (R.A.R.); Tel.: +20-1096264335 (N.M.D.); +20-1001022257 (R.A.R.)
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Effects of Structural and Compositional Changes of Nanochloropsis oceania after Enzyme Treatment on EPA-Rich Lipids Extraction. Mar Drugs 2022; 20:md20030160. [PMID: 35323459 PMCID: PMC8955213 DOI: 10.3390/md20030160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/14/2022] [Accepted: 02/20/2022] [Indexed: 12/03/2022] Open
Abstract
Improved methods for the extraction of eicosapentaenoic acid (EPA), an essential and economically important polyunsaturated fatty acid, are urgently required. However, lipid extraction rates using food-grade solvents such as ethanol are usually low. To improve the ethanol-based extraction rate, and to elucidate the relevant mechanisms, we used cellulase and laccase to treat powdered Nannochloropsis, one of the most promising microalgal sources of EPA. Cellulase and laccase synergistically increased lipid yields by 69.31% and lipid EPA content by 42.63%, by degrading the amorphous hemicellulose and cellulose, improving crystallinity, and promoting the release and extraction of lysodiacylglyceryltrimethylhomoserine. Scanning electron microscopy showed that cell morphology was substantially altered, with cell-wall rupture, loss of cell boundaries, and the release of intracellular substances. In conclusion, Nannochloropsis lipid yields may be directly linked to cell-wall hemicellulose structure, and enzymatic treatment to alter this may improve lipid yields.
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