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Piao Z, Park JK, Patel M, Lee HJ, Jeong B. Poly(l-Ala- co-l-Lys) Exhibits Excellent Ice Recrystallization Inhibition Activity. ACS Macro Lett 2021; 10:1436-1442. [PMID: 35549012 DOI: 10.1021/acsmacrolett.1c00584] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The control of ice recrystallization is very important in cryo-technological fields such as the food industry, biopharmaceuticals, and cell storage. Ice recrystallization inhibition (IRI) compounds are therefore designed to limit the growth of ice crystals, decrease the crystal size, and control the crystal shape. To improve the IRI activity of cryo-systems, various synthetic polymers such as biomimetic polypeptides from polar fish, facially amphiphilic polymers, polyampholytes, poly(vinyl alcohol) derivatives, and block copolymers with hydrophilic-hydrophobic balance have been developed. Except for graphene oxide, poly(vinyl alcohol) has thus far exhibited the best performance among these polymers. Herein, poly(l-alanine-co-l-lysine) (PAK) was shown to exhibit a similar IRI activity to that of poly(vinyl alcohol). Moreover, in contrast to the needle-shaped ice crystals generated by the aqueous PVA solution, the PAK solution was shown to generate cubic-to-spherical shaped ice crystals. Furthermore, neither poly(l-alanine-co-l-aspartic acid) (PAD) nor poly(ethylene glycol) (PEG) with a similar molecular weight provided any significant IRI activity. Examination by FTIR and circular dichroism spectroscopies indicated that the PAK forms α-helices, whereas the PAD forms random coils in water. Further, a dynamic ice shaping study suggested that PAK strongly interacts with ice crystals, whereas PAD and PEG only weakly interact. These results suggest that PAK is an important compound with superior IRI activity and that this activity is dependent upon the functional groups and secondary structure of the polypeptides.
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Affiliation(s)
- Zhengyu Piao
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea
| | - Jin Kyung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea
| | - Madhumita Patel
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea
| | - Hyun Jung Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea
| | - Byeongmoon Jeong
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Korea
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Wang X, Song Z, Wei S, Ji G, Zheng X, Fu Z, Cheng J. Polypeptide-based drug delivery systems for programmed release. Biomaterials 2021; 275:120913. [PMID: 34217020 DOI: 10.1016/j.biomaterials.2021.120913] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 01/01/2023]
Abstract
Recent years have seen increasing interests in the use of ring-opening polymerization of α-amino acid N-carboxyanhydrides (NCAs) to prepare synthetic polypeptides, a class of biocompatible and versatile materials, for various biomedical applications. Because of their rich side-chain functionalities, diverse hydrophilicity/hydrophobicity profiles, and the capability of forming stable secondary structures, polypeptides can assemble into a variety of well-organized nano-structures that have unique advantages in drug delivery and controlled release. Herein, we review the design and use of polypeptide-based drug delivery system derived from NCA chemistry, and discuss the future perspectives of this exciting and important biomaterial area that may potentially change the landscape of next-generation therapeutics and diagnosis. Given the high significance of precise control over release for polypeptide-based systems, we specifically focus on the versatile designs of drug delivery systems capable of programmed release, through the changes in the chemical and physical properties controlled by the built-in molecular structures of polypeptides.
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Affiliation(s)
- Xu Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin, 300070, PR China; Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States
| | - Ziyuan Song
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China.
| | - Shiqi Wei
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States
| | - Guonan Ji
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Xuetao Zheng
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States
| | - Zihuan Fu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States
| | - Jianjun Cheng
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States; Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, United States.
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Reichheld SE, Muiznieks LD, Stahl R, Simonetti K, Sharpe S, Keeley FW. Conformational transitions of the cross-linking domains of elastin during self-assembly. J Biol Chem 2014; 289:10057-68. [PMID: 24550393 DOI: 10.1074/jbc.m113.533893] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Elastin is the intrinsically disordered polymeric protein imparting the exceptional properties of extension and elastic recoil to the extracellular matrix of most vertebrates. The monomeric precursor of elastin, tropoelastin, as well as polypeptides containing smaller subsets of the tropoelastin sequence, can self-assemble through a colloidal phase separation process called coacervation. Present understanding suggests that self-assembly is promoted by association of hydrophobic domains contained within the tropoelastin sequence, whereas polymerization is achieved by covalent joining of lysine side chains within distinct alanine-rich, α-helical cross-linking domains. In this study, model elastin polypeptides were used to determine the structure of cross-linking domains during the assembly process and the effect of sequence alterations in these domains on assembly and structure. CD temperature melts indicated that partial α-helical structure in cross-linking domains at lower temperatures was absent at physiological temperature. Solid-state NMR demonstrated that β-strand structure of the cross-linking domains dominated in the coacervate state, although α-helix was predominant after subsequent cross-linking of lysine side chains with genipin. Mutation of lysine residues to hydrophobic amino acids, tyrosine or alanine, leads to increased propensity for β-structure and the formation of amyloid-like fibrils, characterized by thioflavin-T binding and transmission electron microscopy. These findings indicate that cross-linking domains are structurally labile during assembly, adapting to changes in their environment and aggregated state. Furthermore, the sequence of cross-linking domains has a dramatic effect on self-assembly properties of elastin-like polypeptides, and the presence of lysine residues in these domains may serve to prevent inappropriate ordered aggregation.
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Affiliation(s)
- Sean E Reichheld
- From the Molecular Structure and Function Program, Research Institute, The Hospital for Sick Children, Toronto, Ontario M5G 1X8 and
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Habraken GJM, Peeters M, Thornton PD, Koning CE, Heise A. Selective Enzymatic Degradation of Self-Assembled Particles from Amphiphilic Block Copolymers Obtained by the Combination of N-Carboxyanhydride and Nitroxide-Mediated Polymerization. Biomacromolecules 2011; 12:3761-9. [DOI: 10.1021/bm2010033] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gijs J. M. Habraken
- Laboratory
of Polymer Chemistry, Eindhoven University of Technology, Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Marloes Peeters
- Laboratory
of Polymer Chemistry, Eindhoven University of Technology, Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Paul D. Thornton
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Cor E. Koning
- Laboratory
of Polymer Chemistry, Eindhoven University of Technology, Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Andreas Heise
- Laboratory
of Polymer Chemistry, Eindhoven University of Technology, Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
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Kim W, Yamato I, Ando T. Alanine-based peptides containing polar residues presumably favour α-helical structure entropically. MOLECULAR SIMULATION 2011. [DOI: 10.1080/08927022.2010.543975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Wankee Kim
- a Quantum Bio-Informatics Center, Tokyo University of Science , 2641 Yamazaki, Noda-Shi, Chiba, 278-8510, Japan
| | - Ichiro Yamato
- b Department of Biological Science and Technology , Tokyo University of Science , 2641 Yamazaki, Noda-Shi, Chiba, 278-8510, Japan
| | - Tadashi Ando
- b Department of Biological Science and Technology , Tokyo University of Science , 2641 Yamazaki, Noda-Shi, Chiba, 278-8510, Japan
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Finkelstein AV, Badretdinov AY, Ptitsyn OB. Physical reasons for secondary structure stability: alpha-helices in short peptides. Proteins 1991; 10:287-99. [PMID: 1946339 DOI: 10.1002/prot.340100403] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
It was recently found that some short peptides (including C- and S-peptide fragments of RNase A) can have considerable helicity in solution, which was considered to be surprising. Does the observed helicity require a new explanation, or is it consistent with previous understanding? In this work we show that this helicity is consistent with the physical theory of secondary structure based on an extension of the conventional Zimm-Bragg model. Without any special modifications, this theory explains reasonably well almost all the experimentally observed dependencies of helicity on pH, temperature, and amino acid replacements. We conclude that the observed "general level" of helicity of C- and S-peptides (5-30% at room temperature and 10-50% near 0 degrees C) is "normal" for short peptides consisting mainly of helix-forming and helix-indifferent residues. The helicity is modified by a multitude of weak specific side chain interactions, many of which are taken into account by the present theory; some discrepancies between the theory and experiment can be explained by weak side-chain-side chain interactions that were neglected. A reasonable coincidence of the theory with experiment suggests that it had been used to investigate the role of local interactions in the formation of alpha-helical "embryos" in unfolded protein chains.
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Affiliation(s)
- A V Finkelstein
- Institute of Protein Research, Academy of Sciences of the USSR, Moscow Region
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8
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Untersuchungen der Konformation von alternierenden Copolymeren ausL-Leucin undL-Ornithin in w��rigen L�sungen. Colloid Polym Sci 1982. [DOI: 10.1007/bf01465432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Finkelstein AV, Ptitsyn OB, Kozitsyn SA. Theory of protein molecule self-organization. II. A comparison of calculated thermodynamic parameters of local secondary structures with experiments. Biopolymers 1977; 16:497-524. [PMID: 843599 DOI: 10.1002/bip.1977.360160303] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Finkelstein AV, Ptitsyn OB. Theory of protein molecule self-organization. I. Thermodynamic parameters of local secondary structures in the unfolded protein chain. Biopolymers 1977; 16:469-95. [PMID: 843598 DOI: 10.1002/bip.1977.360160302] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Walter B, Fasman GD. The random coil goes to beta transition of copolymers of L-lysine and L-isoleucine: potentiometric titration and circular dischroism studies. Biopolymers 1977; 16:17-32. [PMID: 843591 DOI: 10.1002/bip.1977.360160103] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Estevez J, Loucheux-Lefebvre MH. Conformational studies in aqueous solution on random copolymers of L-glutamic acid and ortho-nitrobenzyl-L-glutamate. Circular dichroism and potentiometric titration studies. Biopolymers 1976; 15:2101-9. [PMID: 990397 DOI: 10.1002/bip.1976.360151102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Finkelstein AV, Ptitsyn OB. A theory of protein molecule self-organization. IV. Helical and irregular local structures of unfolded protein chains. J Mol Biol 1976; 103:15-24. [PMID: 957423 DOI: 10.1016/0022-2836(76)90049-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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14
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Mandel R, Fasman GD. The random coil leads to beta transition of copolymers of L-lysine and L-valine: potentiometric titration and circular dichroism studies. Biopolymers 1975; 14:1633-49. [PMID: 239771 DOI: 10.1002/bip.1975.360140808] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Bychkova VE, Gudkov AT, Miller WG, Mitin YV, Ptitsyn OB, Shpungin IL. Thermodynamic parameters of the helix-coil transition in polypeptide chains. III. Random copolymers of L-leucine and L-glutamic acid. Biopolymers 1975; 14:1739-53. [PMID: 239773 DOI: 10.1002/bip.1975.360140814] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Stokrová S, Sponar J, Havránek M, Sedlácek B, Bláha K. Basic polypeptides as histone models. Synthesis, conformation, and interaction with DNA of statistical copolymers (Lys x,Ala y)n. Biopolymers 1975; 14:1231-44. [PMID: 240464 DOI: 10.1002/bip.1975.360140612] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Yamamoto H, Yang JT. Syntheses and conformational studies of poly(N-epsilon-methyl-L-lysine), poly(N-delta-methyl-L-ornithine), poly(N-delta-ethyl-L-ornithine), and their carbobenzoxy derivatives. Biopolymers 1974; 13:1093-107. [PMID: 4854563 DOI: 10.1002/bip.1974.360130603] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Chou PY, Fasman GD. Conformational parameters for amino acids in helical, beta-sheet, and random coil regions calculated from proteins. Biochemistry 1974; 13:211-22. [PMID: 4358939 DOI: 10.1021/bi00699a001] [Citation(s) in RCA: 1637] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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20
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Yaron A, Tal N, Berger A. Synthesis and conformation of poly(L-lysyl-L-alanyl-L-alanyl), a sequence-ordered water-soluble copolymer. Biopolymers 1972; 11:2461-81. [PMID: 4649728 DOI: 10.1002/bip.1972.360111207] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Sequence peptide polymers: Part 2. Poly(leucyl-leucyl-aspartic acid)—Conformational aspects in water solution. POLYMER 1972. [DOI: 10.1016/0032-3861(72)90068-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Snell CR, Fasman GD. Conformational studies on copolymers of L-lysine and L-leucine: circular dichroism and potentiometric titration studies. Biopolymers 1972; 11:1723-44. [PMID: 5056090 DOI: 10.1002/bip.1972.360110817] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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23
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Barskaya TV, Ptitsyn OB. Thermodynamic parameters of helix-coil transition in polypeptide chains. II. Poly-L-lysine. Biopolymers 1971; 10:2181-97. [PMID: 5118650 DOI: 10.1002/bip.360101112] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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