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Elnaggar MS, Ibrahim N, Elissawy AM, Anwar A, Ibrahim MAA, Ebada SS. Cytotoxic and antimicrobial mycophenolic acid derivatives from an endophytic fungus Penicillium sp. MNP-HS-2 associated with Macrozamia communis. PHYTOCHEMISTRY 2024; 217:113901. [PMID: 37884257 DOI: 10.1016/j.phytochem.2023.113901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023]
Abstract
Macrozamia communis and its associated endophytic fungi are untapped sources of bioactive metabolites with great potential for medicinal exploitation. Chemical investigation of the mycelial extract derived from an endophytic fungus Penicillium sp. MNP-HS-2 associated with M. communis fruit afforded four mycophenolic acid derivatives recognized as previously undescribed natural products (1-4), together with nine known metabolites (5-13). Chemical structures of isolated compounds were determined based on extensive spectroscopic analyses, including 1D/2D NMR and HRESIMS. The absolute stereochemistry of alternatain E (1) was unambiguously established by comparing its experimental and calculated time-dependent density functional theory electronic circular dichroism spectra (TDDFT-ECD). All isolated compounds were assessed for their antimicrobial and cytotoxic activities, where mycophenolic acid methyl ester (7), displayed significant cytotoxic activity against seven different cell lines with IC50 values in the low micromolar to nanomolar range. Mycophenolene A (3) exhibited significant antibacterial activity against Staphylococcus aureus (MIC = 2.1 μg/mL).
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Affiliation(s)
- Mohamed S Elnaggar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
| | - Nehal Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
| | - Ahmed M Elissawy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Alaa Anwar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Mahmoud A A Ibrahim
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt; School of Health Sciences, University of KwaZulu-Natal, Westville, Durban 4000, South Africa
| | - Sherif S Ebada
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt.
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2
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Walczak J, Iwaszkiewicz-Grześ D, Cholewiński G. Approaches Towards Better Immunosuppressive Agents. Curr Top Med Chem 2024; 24:1230-1263. [PMID: 38561615 DOI: 10.2174/0115680266292661240322072908] [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: 11/13/2023] [Revised: 03/12/2024] [Accepted: 03/12/2024] [Indexed: 04/04/2024]
Abstract
Several classes of compounds are applied in clinics due to their immunosuppressive properties in transplantology and the treatment of autoimmune diseases. Derivatives of mycophenolic acid, corticosteroids and chemotherapeutics bearing heterocyclic moieties like methotrexate, azathioprine, mizoribine, and ruxolitinib are active substances with investigated mechanisms of action. However, improved synthetic approaches of known drugs and novel derivatives are still being reported to attempt better accessibility and therapeutic properties. In this review article, we present the synthesis of the designed chemical structures based on recent literature reports concerning novel compounds as promising immunosuppressive drugs. Moreover, some of the discussed derivers revealed also other types of activities with prospective medicinal potential.
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Affiliation(s)
- Juliusz Walczak
- Department of Organic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Dorota Iwaszkiewicz-Grześ
- Department of Medical Immunology, Faculty of Medicine, Medical University of Gdansk, ul. Dębinki 7, 80-210, Gdańsk, Poland
| | - Grzegorz Cholewiński
- Department of Organic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233, Gdańsk, Poland
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3
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Walczak JM, Iwaszkiewicz-Grześ D, Ziomkowska M, Śliwka-Kaszyńska M, Daśko M, Trzonkowski P, Cholewiński G. Novel amides of mycophenolic acid and some heterocyclic derivatives as immunosuppressive agents. J Enzyme Inhib Med Chem 2022; 37:2725-2741. [PMID: 36189734 PMCID: PMC9542285 DOI: 10.1080/14756366.2022.2127701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The group of 18 new amide derivatives of mycophenolic acid (MPA) and selected heterocyclic amines was synthesised as potential immunosuppressive agents functioning as inosine-5′-monophosphate dehydrogenase (IMPDH) uncompetitive inhibitors. The synthesis of 14 of them employed uronium-type activating system (TBTU/HOBt/DIPEA) while 4 of them concerned phosphonic acid anhydride method (T3P/Py) facilitating amides to be obtained in moderate to excellent yields without the need of phenolic group protection. Most of optimised protocols did not require complicated reaction work-ups, including chromatographic, solvent-consuming methods. The biological activity assay was performed on the T-Jurkat cell line and peripheral mononuclear blood cells (PBMCs) which are both dedicated for antiproliferative activity determination. Each of designed derivatives was characterised by reduced cytotoxicity and benzoxazole analogue (A2) revealed the most promising activity. Subsequently, an observed structure-activity relationship was discussed.
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Affiliation(s)
| | | | | | | | - Mateusz Daśko
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Piotr Trzonkowski
- Department of Medical Immunology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Grzegorz Cholewiński
- Department of Organic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
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4
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Efficacy of natural antimicrobial peptides versus peptidomimetic analogues: a systematic review. Future Med Chem 2022; 14:1899-1921. [PMID: 36421051 DOI: 10.4155/fmc-2022-0160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Aims: This systematic review was carried out to determine whether synthetic peptidomimetics exhibit significant advantages over antimicrobial peptides in terms of in vitro potency. Structural features - molecular weight, charge and length - were examined for correlations with activity. Methods: Original research articles reporting minimum inhibitory concentration values against Escherichia coli, indexed until 31 December 2020, were searched in PubMed/ScienceDirect/Google Scholar and evaluated using mixed-effects models. Results: In vitro antimicrobial activity of peptidomimetics resembled that of antimicrobial peptides. Net charge significantly affected minimum inhibitory concentration values (p < 0.001) with a trend of 4.6% decrease for increments in charge by +1. Conclusion: AMPs and antibacterial peptidomimetics exhibit similar potencies, providing an opportunity to exploit the advantageous stability and bioavailability typically associated with peptidomimetics.
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Egbujor MC, Okoro UC, Okafor SN, Egu SA, Amasiatu IS, Egwuatu PI, Umeh OR, Ibo EM. Design, synthesis, and molecular docking of cysteine-based sulphonamide derivatives as antimicrobial agents. Res Pharm Sci 2021; 17:99-110. [PMID: 34909048 PMCID: PMC8621839 DOI: 10.4103/1735-5362.329930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 04/14/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022] Open
Abstract
Background and purpose: The preponderance of microbial infections remains a global challenge. In the present study, synthesis of novel cysteine-based antimicrobial agents and their biological evaluation is reported. Experimental approach: The reaction of p-toluenesulphonyl chloride with cysteine afforded 2-{[(4-methylphenyl)sulphonyl]amino}-3-sulphanylpropanoic acid (3) which was acetylated based on Lumiere-Barbier method using acetic anhydride. The ammonolysis of the acetylated compound (4) gave the carboxamide derivative (5) which reacted with aniline, aminopyridine and diaminopyrimidine via nickel catalyzed Buchwald-Hartwig amidation reaction to afford compounds 6a, 6b, and 6c, respectively. The compounds were characterized using FTIR, 1H-NMR, 13C-NMR, and elemental analysis. The in vitro antimicrobial activities were determined. Their physicochemical properties were generated in silico and the molecular docking studied bacterial and fungal infections. Findings/Results: Compounds 4, 6b, and 6c exhibited excellent in vitro antibacterial activities while compound 4 had the best antifungal activities. From the in silico antimicrobial results, compound 3 had a better binding affinity (-10.95 kcal/mol) than penicillin (-10.89 kcal/mol) while compounds 3 and 4 had binding affinities (-10.07 and -10.62kcal/mol) comparable to ketoconazole (-10.85 kcal/mol). Conclusion and implication: All the synthesized compounds exhibited significant antibacterial and antifungal activities and were confirmed to be potential antimicrobial agents.
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Affiliation(s)
- Melford C Egbujor
- Department of Industrial Chemistry, Renaissance University, Ugbawka, Enugu State, Nigeria
| | - Uchechukwu C Okoro
- Synthetic Organic Chemistry Division, Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Sunday N Okafor
- Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Samuel A Egu
- Department of Pure and Industrial Chemistry, Kogi State University, Anyigba, Kogi State, Nigeria
| | - Ifeanyi S Amasiatu
- Department of Biochemistry, Renaissance University, Ugbawka, Enugu State, Nigeria
| | - Pius I Egwuatu
- Department of Microbiology, Renaissance University, Ugbawka, Enugu State, Nigeria
| | - Odera R Umeh
- Department of Applied Microbiology and Brewing, Nnamdi Azikiwe University, P.M.B 5025 Awka, Anambra State, Nigeria
| | - Eziafakaego M Ibo
- Department of Applied Microbiology and Brewing, Nnamdi Azikiwe University, P.M.B 5025 Awka, Anambra State, Nigeria
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Shang FF, Wang MY, Ai JP, Shen QK, Guo HY, Jin CM, Chen FE, Quan ZS, Jin L, Zhang C. Synthesis and evaluation of mycophenolic acid derivatives as potential anti-Toxoplasma gondii agents. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02803-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Xu Q, Deng H, Li X, Quan ZS. Application of Amino Acids in the Structural Modification of Natural Products: A Review. Front Chem 2021; 9:650569. [PMID: 33996749 PMCID: PMC8118163 DOI: 10.3389/fchem.2021.650569] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/02/2021] [Indexed: 01/11/2023] Open
Abstract
Natural products and their derivatives are important sources for drug discovery; however, they usually have poor solubility and low activity and require structural modification. Amino acids are highly soluble in water and have a wide range of activities. The introduction of amino acids into natural products is expected to improve the performance of these products and minimize their adverse effects. Therefore, this review summarizes the application of amino acids in the structural modification of natural products and provides a theoretical basis for the structural modification of natural products in the future. The articles were divided into six types based on the backbone structures of the natural products, and the related applications of amino acids in the structural modification of natural products were discussed in detail.
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Affiliation(s)
- Qian Xu
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Hao Deng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
| | - Xiaoting Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
- Department of Pharmaceutical Analysis, Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, China
| | - Zhe-Shan Quan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Affiliated Ministry of Education, College of Pharmacy, Yanbian University, Jilin, China
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Siebert A, Deptuła M, Cichorek M, Ronowska A, Cholewiński G, Rachon J. Anticancer Properties of Amino Acid and Peptide Derivatives of Mycophenolic Acid. Anticancer Agents Med Chem 2021; 21:462-467. [PMID: 32416705 DOI: 10.2174/1871520620666200516151456] [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: 01/28/2020] [Revised: 03/26/2020] [Accepted: 04/13/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Although Mycophenolic Acid (MPA) is applied as prodrugs in clinic as an immunosuppressant, it also possesses anticancer activity. MPA acts as Inosine-5'-Monophosphate Dehydrogenase (IMPDH) inhibitor, where the carboxylic group at the end of the side chain interacts with Ser 276 of the enzyme via hydrogen bonds. Therefore, MPA derivatives with other polar groups indicated high inhibition too. On the other hand, potent anticancer agents like dacarbazine and cisplatin give numerous side-effects. OBJECTIVE Based on the literature data, MPA derivatives should be explored towards anticancer properties. Conversion of the carboxylic group of MPA to amide could maintain antiproliferative activity. Therefore, we decided to investigate several amino acid and peptide derivatives of MPA against chosen cancer cell lines in vitro. METHODS Amides of MPA hold threonine and arginine amino acid unit. These amino acid derivatives were tested as L and D enantiomers and both in free acid and methyl esters forms. Additionally, MPA was modified with tuftsin or retro-tuftsin as biologically active peptides, which could act as a drug carrier. RESULTS Amino acid and peptide derivatives of MPA were investigated in vitro as potential anticancer agents on cell lines: Ab melanoma, A375 melanoma and SHSY5Y neuroblastoma. The activity of the tested compounds was compared to parent MPA and known chemotherapeutics: dacarbazine and cisplatin. CONCLUSION Amino acid moiety and the sequence of amino acids in the peptide part influenced observed activity. The most active amino acid MPA analogues occurred to be D and L-threonine derivatives as methyl esters, probably due to better cell membrane penetration.
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Affiliation(s)
- Agnieszka Siebert
- Department of Organic Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
| | - Milena Deptuła
- Department of Embryology, Medical University of Gdansk, Debinki 1, 80-211, Gdansk, Poland
| | - Mirosława Cichorek
- Department of Embryology, Medical University of Gdansk, Debinki 1, 80-211, Gdansk, Poland
| | - Anna Ronowska
- Department of Laboratory Medicine, Medical University of Gdansk, Debinki 1, 80-211, Gdansk, Poland
| | - Grzegorz Cholewiński
- Department of Organic Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
| | - Janusz Rachon
- Department of Organic Chemistry, Gdansk University of Technology, G. Narutowicza 11/12, 80-233 Gdansk, Poland
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9
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Chourasia R, Abedin MM, Chiring Phukon L, Sahoo D, Singh SP, Rai AK. Biotechnological approaches for the production of designer cheese with improved functionality. Compr Rev Food Sci Food Saf 2020; 20:960-979. [PMID: 33325160 DOI: 10.1111/1541-4337.12680] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 10/27/2020] [Accepted: 11/12/2020] [Indexed: 12/19/2022]
Abstract
Cheese is a product of ancient biotechnological practices, which has been revolutionized as a functional food product in many parts of the world. Bioactive compounds, such as peptides, polysaccharides, and fatty acids, have been identified in traditional cheese products, which demonstrate functional properties such as antihypertensive, antioxidant, immunomodulation, antidiabetic, and anticancer activities. Besides, cheese-making probiotic lactic acid bacteria (LAB) exert a positive impact on gut health, aiding in digestion, and improved nutrient absorption. Advancement in biotechnological research revealed the potential of metabolite production with prebiotics and bioactive functions in several strains of LAB, yeast, and filamentous fungi. The application of specific biocatalyst producing microbial strains enhances nutraceutical value, resulting in designer cheese products with multifarious health beneficial effects. This review summarizes the biotechnological approaches applied in designing cheese products with improved functional properties.
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Affiliation(s)
- Rounak Chourasia
- Institute of Bioresources and Sustainable Development, Regional Centre, Tadong, Sikkim, India
| | - Md Minhajul Abedin
- Institute of Bioresources and Sustainable Development, Regional Centre, Tadong, Sikkim, India
| | - Loreni Chiring Phukon
- Institute of Bioresources and Sustainable Development, Regional Centre, Tadong, Sikkim, India
| | - Dinabandhu Sahoo
- Institute of Bioresources and Sustainable Development, Regional Centre, Tadong, Sikkim, India.,Department of Botany, University of Delhi, New Delhi, India
| | - Sudhir P Singh
- Center of Innovative and Applied Bioprocessing, SAS Nagar, Mohali, India
| | - Amit Kumar Rai
- Institute of Bioresources and Sustainable Development, Regional Centre, Tadong, Sikkim, India
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Meghwanshi GK, Kaur N, Verma S, Dabi NK, Vashishtha A, Charan PD, Purohit P, Bhandari HS, Bhojak N, Kumar R. Enzymes for pharmaceutical and therapeutic applications. Biotechnol Appl Biochem 2020; 67:586-601. [PMID: 32248597 DOI: 10.1002/bab.1919] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Indexed: 01/03/2023]
Abstract
Enzymes are highly efficient and selective biocatalysts, present in the living beings. They exist in enormous varieties in terms of the types of reactions catalyzed by them for instance oxidation-reduction, group transfers within the molecules or between the molecules, hydrolysis, isomerization, ligation, bond cleavage, and bond formation. Besides, enzyme based catalyses are performed with much higher fidelity, under mild reaction conditions and are highly efficient in terms of number of steps, giving them an edge over their chemical counter parts. The unique characteristics of enzymes makes them highly applicable fora number of chemical transformation reactions in pharmaceutical industries, such as group protection and deprotection, selective acylation and deacylation, selective hydrolysis, deracemization, kinetic resolution of racemic mixtures, esterification, transesterification, and many others. In this review, an overview of the enzymes, their production and their applications in pharmaceutical syntheses and enzyme therapies are presented with diagrams, reaction schemes and table for easy understanding of the readers.
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Affiliation(s)
| | - Navpreet Kaur
- Department of Microbiology, M.G.S. University, Bikaner, India
| | - Swati Verma
- Department of Microbiology, M.G.S. University, Bikaner, India
| | | | | | - P D Charan
- Department of Environmental Science, M.G.S. University, Bikaner, India
| | - Praveen Purohit
- Department of Chemistry, Engineering College, Bikaner, India
| | - H S Bhandari
- Department of Chemistry, GCRC Govt. Dungar College, Bikaner, India
| | - N Bhojak
- Department of Chemistry, GCRC Govt. Dungar College, Bikaner, India
| | - Rajender Kumar
- Department of Clinical Microbiology, Umeå University, Umeå, Sweden
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11
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Yulizal OK, Lelo A, Ilyas S, Kusumawati RL. The effect of snakehead fish extract supplementation to first-line eradication regimen on macrophage migration inhibitory factor (MIF) expression in rats induced by Helicobacter pylori infection. J Adv Vet Anim Res 2020; 7:209-217. [PMID: 32607351 PMCID: PMC7320804 DOI: 10.5455/javar.2020.g411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/16/2020] [Accepted: 04/19/2020] [Indexed: 12/21/2022] Open
Abstract
Objective: This work was organized to assess macrophage migration inhibitory factor (MIF) expression in snakehead fish extract supplementation to first-line eradication regimen in rats induced by Helicobacter pylori infection. Materials and methods: A total of 28 manly rats were haphazardly isolated equally into four groups. Group-1 was the control negative, and groups-2–4 were H. pylori-infected groups. Group-2 was the control positive. Groups-3 and 4 were treated with first-line eradication regimen and first-line eradication regimen supplemented with snakehead fish extract, respectively. Immunoreactive scores (IRS) of MIF expression and eradication testing procedure were carried out. The comparison and difference between groups were analyzed by Kruskal–Wallis and post hoc Mann–Whitney U-test. A value of p < 0.05 was considered to be a limit of significance. Results: The average IRS of MIF expression in group-2 was the highest among other groups (p < 0.05). Group-4 (supplemented by snakehead fish extract) had a lower median value IRS of MIF expression compared to group-3 [1.0 (0.0–2.0) vs. 3.5 (2.0–6.0), p = 0.004]. Conclusion: MIF expression was higher in rats induced by H. pylori infection. Snakehead fish extract supplementation to first-line eradication regimen significantly reduces more MIF expression compared to a single administration of first-line eradication regimen in rats induced by H. pylori infection.
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Affiliation(s)
- O K Yulizal
- Faculty of Medicine, Universitas Sumatera Utara, Medan, Indonesia
| | - Aznan Lelo
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Universitas Sumatera Utara, Medan, Indonesia
| | - Syafruddin Ilyas
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, Indonesia
| | - Raden Lia Kusumawati
- Department of Microbiology, Faculty of Medicine, H. Adam Malik General Hospital, Universitas Sumatera Utara, Medan, Indonesia
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12
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Immunosuppressive properties of amino acid and peptide derivatives of mycophenolic acid. Eur J Med Chem 2020; 189:112091. [PMID: 32007665 DOI: 10.1016/j.ejmech.2020.112091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 11/23/2022]
Abstract
Mycophenolic acid (MPA) was coupled with amino acids and biologically active peptides including derivatives of tuftsin to modify its immunosuppressive properties. Both amino acid unit in the case of simple MPA amides and modifications within peptide moiety of MPA - tuftsin conjugates influenced the observed activity. Antiproliferative potential of the obtained conjugates was investigated in vitro and MPA amides with threonine methyl ester and conjugate of MPA with retro-tuftisin occurred to be more selective against PBMC in comparison to parent MPA. Both amino acid and peptide derivatives of MPA acted as inosine-5'-monophosphate dehydrogenaze (IMPDH) inhibitors.
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13
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Jin X, Geng X, Jia L, Xu Z, Ye L, Gu Y, Zhang AY, Feng ZG. Preparation of Small-Diameter Tissue-Engineered Vascular Grafts Electrospun from Heparin End-Capped PCL and Evaluation in a Rabbit Carotid Artery Replacement Model. Macromol Biosci 2019; 19:e1900114. [PMID: 31222914 DOI: 10.1002/mabi.201900114] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/23/2019] [Indexed: 12/14/2022]
Abstract
Aiming to construct small diameter (ID <6 mm) off-the-shelf tissue-engineered vascular grafts, the end-group heparinizd poly(ε-caprolactone) (PCL) is synthesized by a three-step process and then electrospun into an inner layer of double-layer vascular scaffolds (DLVSs) showing a hierarchical double distribution of nano- and microfibers. Afterward, PCL without the end-group heparinization is electrospun into an outer layer. A steady release of grafted heparin and the existence of a glycocalyx structure give the grafts anticoagulation activity and the conjugation of heparin also improves hydrophilicity and accelerates degradation of the scaffolds. The DLVSs are evaluated in six rabbits via a carotid artery interpositional model for a period of three months. All the grafts are patent until explantation, and meanwhile smooth endothelialization and fine revascularization are observed in the grafts. The composition of the outer layer of scaffolds exhibits a significant effect on the aneurysm dilation after implantation. Only one aneurysm dilation is detected at two months and no calcification is formed in the follow-up term. How to prevent aneurysms remains a challenging topic.
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Affiliation(s)
- Xin Jin
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xue Geng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Liujun Jia
- Beijing Key Laboratory of Pre-clinic Research and Evaluation for Cardiovascular Implant Materials, Fuwai Hospital National Cardiovascular Center, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100037, China
| | - Zeqin Xu
- Department of Vascular Surgery, Xuanwu Hospital and Institute of Vascular Surgery, Capital Medical University, Beijing, 100053, China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yongquan Gu
- Department of Vascular Surgery, Xuanwu Hospital and Institute of Vascular Surgery, Capital Medical University, Beijing, 100053, China
| | - Ai-Ying Zhang
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Zeng-Guo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China
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14
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Athanázio-Heliodoro JC, Okino-Delgado CH, Fernandes CJDC, Zanutto MR, Prado DZD, da Silva RA, Facanali R, Zambuzzi WF, Marques MOM, Fleuri LF. Improvement of lipase obtaining system by orange waste-based solid-state fermentation: production, characterization and application. Prep Biochem Biotechnol 2018; 48:565-573. [DOI: 10.1080/10826068.2018.1476879] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
| | - Clarissa Hamaio Okino-Delgado
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | | | - Mirella Rossitto Zanutto
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Débora Zanoni do Prado
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | - Rodrigo Augusto da Silva
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | | | - Willian Fernando Zambuzzi
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
| | | | - Luciana Francisco Fleuri
- Chemistry and Biochemistry Department, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, SP, Brazil
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