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Bertolini M, Mendive-Tapia L, Ghashghaei O, Reese A, Lochenie C, Schoepf AM, Sintes M, Tokarczyk K, Nare Z, Scott AD, Knight SR, Aithal AR, Sachdeva A, Lavilla R, Vendrell M. Nonperturbative Fluorogenic Labeling of Immunophilins Enables the Wash-free Detection of Immunosuppressants. ACS CENTRAL SCIENCE 2024; 10:969-977. [PMID: 38799658 PMCID: PMC11117681 DOI: 10.1021/acscentsci.3c01590] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 05/29/2024]
Abstract
Immunosuppressants are clinically approved drugs to treat the potential rejection of transplanted organs and require frequent monitoring due to their narrow therapeutic window. Immunophilins are small proteins that bind immunosuppressants with high affinity, yet there are no examples of fluorogenic immunophilins and their potential application as optical biosensors for immunosuppressive drugs in clinical biosamples. In the present work, we designed novel diazonium BODIPY salts for the site-specific labeling of tyrosine residues in peptides via solid-phase synthesis as well as for late-stage functionalization of whole recombinant proteins. After the optimization of a straightforward one-step labeling procedure for immunophilins PPIA and FKBP12, we demonstrated the application of a fluorogenic analogue of FKBP12 for the selective detection of the immunosuppressant drug tacrolimus, including experiments in urine samples from patients with functioning renal transplants. This chemical methodology opens new avenues to rationally design wash-free immunophilin-based biosensors for rapid therapeutic drug monitoring.
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Affiliation(s)
- Marco Bertolini
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Lorena Mendive-Tapia
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Ouldouz Ghashghaei
- Laboratory
of Medicinal Chemistry, Faculty of Pharmacy and Food Sciences and
Institute of Biomedicine UB (IBUB), University
of Barcelona, Catalunya, Spain 08007
| | - Abigail Reese
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Charles Lochenie
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Anna M. Schoepf
- Laboratory
of Medicinal Chemistry, Faculty of Pharmacy and Food Sciences and
Institute of Biomedicine UB (IBUB), University
of Barcelona, Catalunya, Spain 08007
| | - Miquel Sintes
- Laboratory
of Medicinal Chemistry, Faculty of Pharmacy and Food Sciences and
Institute of Biomedicine UB (IBUB), University
of Barcelona, Catalunya, Spain 08007
| | - Karolina Tokarczyk
- Concept
Life Sciences Ltd, Edinburgh Bioquarter, Edinburgh EH16 4UX, U.K.
| | - Zandile Nare
- Concept
Life Sciences Ltd, Edinburgh Bioquarter, Edinburgh EH16 4UX, U.K.
| | - Andrew D. Scott
- Concept
Life Sciences Ltd, Edinburgh Bioquarter, Edinburgh EH16 4UX, U.K.
| | - Stephen R. Knight
- Renal
Transplant Unit, Queen Elizabeth Hospital, 1345 Govan Road, Glasgow G51 4TF, U.K.
| | - Advait R. Aithal
- School of
Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K.
| | - Amit Sachdeva
- School of
Chemistry, University of East Anglia, Norwich NR4 7TJ, U.K.
| | - Rodolfo Lavilla
- Laboratory
of Medicinal Chemistry, Faculty of Pharmacy and Food Sciences and
Institute of Biomedicine UB (IBUB), University
of Barcelona, Catalunya, Spain 08007
| | - Marc Vendrell
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
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2
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Khan S, Ansari B, Ansari NK, Naeem A. Protective role of chlorogenic acid in preserving cytochrome-c stability against HFIP-induced molten globule state at physiological pH. Int J Biol Macromol 2024; 261:129845. [PMID: 38302016 DOI: 10.1016/j.ijbiomac.2024.129845] [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: 08/31/2023] [Revised: 01/26/2024] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
Numerous neurodegenerative disorders are characterized by protein misfolding and aggregation. The mechanism of protein aggregation is intricate, and it is very challenging to study at cellular level. Inhibition of protein aggregation by interfering with its pathway is one of the ways to prevent neurodegenerative diseases. In the present work, we have evaluated the protective effect of a polyphenol compound chlorogenic acid (CGA) on the native and molten globule state of horse heart cytochrome c (cyt c). A molten globule state of this heme protein was achieved in the presence of fluorinated alcohol 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) at physiological pH, as studied by UV-Vis absorption, circular dichroism, intrinsic and ANS fluorescence. We found that at 50 % (v/v) HFIP, the native cyt c transformed into a molten globule state. The same techniques were also used to analyze the protective effect of CGA on the molten globule state of cyt c, and the results show that the CGA prevented the molten globular state and retained the protein close to the native state at 1:1 protein:CGA sub molar ratio. Molecular dynamics study also revealed that CGA retains the stability of cyt c in HFIP medium by preserving it in an intermediate state close to native conformation.
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Affiliation(s)
- Sadaf Khan
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
| | - Bushra Ansari
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India
| | - Neha Kausar Ansari
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
| | - Aabgeena Naeem
- Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, U.P., India.
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Samui S, Biswas S, Muniyappa K, Naskar J. Nano‐Assemblies of a Synthetic Peptide: Illuminating Aggregation Potential, Amyloidogenicity and Cytotoxicity. ChemistrySelect 2021. [DOI: 10.1002/slct.202102570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Satyabrata Samui
- Department of Biochemistry and Biophysics University of Kalyani Nadia WB 741235 India
| | - Soumi Biswas
- Department of Biochemistry and Biophysics University of Kalyani Nadia WB 741235 India
| | - K. Muniyappa
- Department of Biochemistry Indian Institute of Science Bangalore Karnataka 560 012 India
| | - Jishu Naskar
- Department of Biochemistry and Biophysics University of Kalyani Nadia WB 741235 India
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Volatile Anesthetic Sevoflurane Precursor 1,1,1,3,3,3-Hexafluoro-2-Propanol (HFIP) Exerts an Anti-Prion Activity in Prion-Infected Culture Cells. Neurochem Res 2021; 46:2056-2065. [PMID: 34043140 PMCID: PMC8254714 DOI: 10.1007/s11064-021-03344-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/20/2021] [Accepted: 05/12/2021] [Indexed: 12/22/2022]
Abstract
Prion disease is a neurodegenerative disorder with progressive neurologic symptoms and accelerated cognitive decline. The causative protein of prion disease is the prion protein (PrP), and structural transition of PrP from the normal helix rich form (PrPC) to the abnormal β-sheet rich form (PrPSc) occurs in prion disease. While so far numerous therapeutic agents for prion diseases have been developed, none of them are still useful. A fluorinated alcohol, hexafluoro isopropanol (HFIP), is a precursor to the inhalational anesthetic sevoflurane and its metabolites. HFIP is also known as a robust α-helix inducer and is widely used as a solvent for highly aggregated peptides. Here we show that the α-helix-inducing activity of HFIP caused the conformational transformation of the fibrous structure of PrP into amorphous aggregates in vitro. HFIP added to the ScN2a cell medium, which continuously expresses PrPSc, reduced PrPSc protease resistance after 24-h incubation. It was also clarified that ScN2a cells are more susceptible to HFIP than any of the cells being compared. Based on these findings, HFIP is expected to develop as a therapeutic agent for prion disease.
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5
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Chen AB, Shao Q, Hall CK. Molecular simulation study of 3,4-dihydroxyphenylalanine in the context of underwater adhesive design. J Chem Phys 2021; 154:144702. [PMID: 33858170 DOI: 10.1063/5.0044173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Adhesives that can stick to multiple surface types in underwater and high moisture conditions are critical for various applications such as marine coatings, sealants, and medical devices. The analysis of natural underwater adhesives shows that L-3,4-dihydroxyphenylalanine (DOPA) and functional amyloid nanostructures are key components that contribute to the adhesive powers of these natural glues. The combination of DOPA and amyloid-forming peptides into DOPA-amyloid(-forming peptide) conjugates provides a new approach to design generic underwater adhesives. However, it remains unclear how the DOPA monomers may interact with amyloid-forming peptides and how these interactions may influence the adhesive ability of the conjugates. In this paper, we investigate the behavior of DOPA monomers, (glycine-DOPA)3 chains, and a KLVFFAE and DOPA-glycine chain conjugate in aqueous environments using molecular simulations. The DOPA monomers do not aggregate significantly at concentrations lower than 1.0M. Simulations of (glycine-DOPA)3 chains in water were done to examine the intra-molecular interactions of the chain, wherein we found that there were unlikely to be interactions detrimental to the adhesion process. After combining the alternating DOPA-glycine chain with the amyloid-forming peptide KLVFFAE into a single chain conjugate, we then simulated the conjugate in water and saw the possibility of both intra-chain folding and no chain folding in the conjugate.
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Affiliation(s)
- Amelia B Chen
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, USA
| | - Qing Shao
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506, USA
| | - Carol K Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, USA
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6
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Sloand JN, Miller MA, Medina SH. Fluorinated peptide biomaterials. Pept Sci (Hoboken) 2021; 113:e24184. [PMID: 34541446 PMCID: PMC8448251 DOI: 10.1002/pep2.24184] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 06/30/2020] [Indexed: 12/20/2022]
Abstract
Fluorinated compounds, while rarely used by nature, are emerging as fundamental ingredients in biomedical research, with applications in drug discovery, metabolomics, biospectroscopy, and, as the focus of this review, peptide/protein engineering. Leveraging the fluorous effect to direct peptide assembly has evolved an entirely new class of organofluorine building blocks from which unique and bioactive materials can be constructed. Here, we discuss three distinct peptide fluorination strategies used to design and induce peptide assembly into nano-, micro-, and macrosupramolecular states that potentiate high-ordered organization into material scaffolds. These fluorine-tailored peptide assemblies employ the unique fluorous environment to boost biofunctionality for a broad range of applications, from drug delivery to antibacterial coatings. This review provides foundational tactics for peptide fluorination and discusses the utility of these fluorous-directed hierarchical structures as material platforms in diverse biomedical applications.
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Affiliation(s)
- Janna N Sloand
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
| | - Michael A Miller
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
| | - Scott H Medina
- Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
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7
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Samantray S, Yin F, Kav B, Strodel B. Different Force Fields Give Rise to Different Amyloid Aggregation Pathways in Molecular Dynamics Simulations. J Chem Inf Model 2020; 60:6462-6475. [DOI: 10.1021/acs.jcim.0c01063] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suman Samantray
- Institute of Biological Information Processing: Structural Biochemistry (IBI-7), Forschungszentrum Jülch, 52428 Jülich, Germany
- AICES Graduate School, RWTH Aachen University, Schinkelstraße 2, 52062 Aachen, Germany
| | - Feng Yin
- Institute of Biological Information Processing: Structural Biochemistry (IBI-7), Forschungszentrum Jülch, 52428 Jülich, Germany
| | - Batuhan Kav
- Institute of Biological Information Processing: Structural Biochemistry (IBI-7), Forschungszentrum Jülch, 52428 Jülich, Germany
| | - Birgit Strodel
- Institute of Biological Information Processing: Structural Biochemistry (IBI-7), Forschungszentrum Jülch, 52428 Jülich, Germany
- Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
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Abstract
Living systems contain remarkable functional capability built within sophisticated self-organizing frameworks. Defining the assembly codes that coordinate these systems could greatly extend nanobiotechnology. To that end, we have highlighted the self-assembling architecture of the chlorosome antenna arrays and report the emulation and extension of their features for the development of cell-compatible photoredox materials. We specifically review work on amyloid peptide scaffolds able to (1) organize light-harvesting chromophores, (2) break peptide bilayer symmetry for directional energy and electron transfer, and (3) incorporate redox active metal ions at high density for energy storage.
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Affiliation(s)
- Rolando F Rengifo
- Emory University, Departments of Biology and Chemistry, 1515 Dickey Dr. NE, Atlanta, GA 30322, USA.
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9
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Pachahara SK, Adicherla H, Nagaraj R. Self-Assembly of Aβ40, Aβ42 and Aβ43 Peptides in Aqueous Mixtures of Fluorinated Alcohols. PLoS One 2015; 10:e0136567. [PMID: 26308214 PMCID: PMC4550328 DOI: 10.1371/journal.pone.0136567] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 08/04/2015] [Indexed: 12/02/2022] Open
Abstract
Fluorinated alcohols such as hexafluoroisopropanol (HFIP) and trifluoroethanol (TFE) have the ability to promote α-helix and β-hairpin structure in proteins and peptides. HFIP has been used extensively to dissolve various amyloidogenic proteins and peptides including Aβ, in order to ensure their monomeric status. In this paper, we have investigated the self-assembly of Aβ40, Aβ42, and Aβ43 in aqueous mixtures of fluorinated alcohols from freshly dissolved stock solutions in HFIP. We have observed that formation of fibrillar and non-fibrillar structures are dependent on the solvent composition. Peptides form fibrils with ease when reconstituted in deionized water from freshly dissolved HFIP stocks. In aqueous mixtures of fluorinated alcohols, either predominant fibrillar structures or clustered aggregates were observed. Aqueous mixtures of 20% HFIP are more favourable for Aβ fibril formation as compared to 20% TFE. When Aβ40, Aβ42, and Aβ43 stocks in HFIP are diluted in 50% aqueous mixtures in phosphate buffer or deionized water followed by slow evaporation of HFIP, Aβ peptides form fibrils in phosphate buffer and deionized water. The clustered structures could be off-pathway aggregates. Aβ40, Aβ42, and Aβ43 showed significant α-helical content in freshly dissolved HFIP stocks. The α-helical conformational intermediate in Aβ40, Aβ42, and Aβ43 could favour the formation of both fibrillar and non-fibrillar aggregates depending on solvent conditions and rate of α-helical to β-sheet transition.
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Affiliation(s)
| | - Harikrishna Adicherla
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500 007, India
| | - Ramakrishnan Nagaraj
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, 500 007, India
- * E-mail:
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