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  1. Article ; Online: Tailoring of Peptide Vesicles: A Bottom-Up Chemical Approach.

    Haridas, V

    Accounts of chemical research

    2021  Volume 54, Issue 8, Page(s) 1934–1949

    Abstract: Spherical ordering from small molecules is a subject of intense interest to chemists. The inherent capability of amphiphiles to assemble spontaneously is the unique feature of the evolutionary process of life. Self-assembly is prevalent in biology and ... ...

    Abstract Spherical ordering from small molecules is a subject of intense interest to chemists. The inherent capability of amphiphiles to assemble spontaneously is the unique feature of the evolutionary process of life. Self-assembly is prevalent in biology and has attracted the interest of scientists across several disciplines. This is because scientists have realized that nature has extensively used this inherent organizational power contained in the molecules. Judicious use of the self-assembly principle is the cornerstone of nature's exotic assemblies. These exotic assemblies lead to unimaginable functions in biology that might not have been predicted from the monomer building blocks alone. Recently, a number of chemical systems that self-assemble in aqueous or organic solvents to form vesicles were reported. This account provides advances made from our laboratory toward designing and understanding the mechanism of formation of spherical vesicular assembly. A bottom-up approach for the
    MeSH term(s) Dendrimers/chemistry ; Hydrophobic and Hydrophilic Interactions ; Liposomes/chemistry ; Molecular Dynamics Simulation ; Peptides/chemistry ; Polyethylene Glycols/chemistry
    Chemical Substances Dendrimers ; Liposomes ; Peptides ; Polyethylene Glycols (3WJQ0SDW1A)
    Language English
    Publishing date 2021-04-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1483291-4
    ISSN 1520-4898 ; 0001-4842
    ISSN (online) 1520-4898
    ISSN 0001-4842
    DOI 10.1021/acs.accounts.0c00690
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  2. Article ; Online: Inhibitors to degraders: Changing paradigm in drug discovery.

    Haridas, V / Dutta, Souvik / Munjal, Akshay / Singh, Shailja

    iScience

    2024  Volume 27, Issue 5, Page(s) 109574

    Abstract: The chemical understanding of biological processes provides not only a deeper insight but also a solution to abnormal biological functioning. Protein degradation, a natural biological process for debris removal in the cell, has been studied for years. ... ...

    Abstract The chemical understanding of biological processes provides not only a deeper insight but also a solution to abnormal biological functioning. Protein degradation, a natural biological process for debris removal in the cell, has been studied for years. The recent finding that natural degradation pathways can be utilized for therapeutic purposes is a paradigm shift in the drug discovery approach. Methods such as Proteolysis Targeting Chimera (PROTAC), lysosomal targeting chimera, hydrophobic tagging, AUtophagy TArgeting Chimera, AUTOphagy TArgeting Chimera and several other variants of these methods have made a considerable impact on the way of drug design. Few selected examples testify that a huge wave of change is on the way. The drug design based on the targeted protein degradation is a powerful tool in our arsenal. More molecules will be invented that will uncover the hidden secrets of biological functioning and provide enduring solutions to several unmet medical needs.
    Language English
    Publishing date 2024-03-26
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 2589-0042
    ISSN (online) 2589-0042
    DOI 10.1016/j.isci.2024.109574
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Pseudopeptosomes: non-lipidated vesicular assemblies from bispidine-appended pseudopeptides.

    Singh, Hanuman / Pragya, Pragya / Mittal, Aditya / Haridas, V

    Organic & biomolecular chemistry

    2023  Volume 21, Issue 17, Page(s) 3557–3566

    Abstract: We report a novel molecular topology-based approach for creating reproducible vesicular assemblies in different solvent environments (including aqueous) using specifically designed pseudopeptides. Deviating from the classical "polar head group and ... ...

    Abstract We report a novel molecular topology-based approach for creating reproducible vesicular assemblies in different solvent environments (including aqueous) using specifically designed pseudopeptides. Deviating from the classical "polar head group and hydrophobic tail" model of amphiphiles, we showed (reversible) self-assembly of synthesized pseudopeptides into vesicles. Naming these new type/class of vesicles "pseudopetosomes", we characterized them by high-resolution microscopy (scanning electron, transmission electron, atomic force, epifluorescence and confocal) along with dynamic light scattering. While accounting for hydropathy index of the constituent amino acids (side chains) of pseudopeptides, we probed molecular interactions, resulting in assembly of pseudopeptosomes by spectroscopy (fourier-transform infrared and fluorescence). Molecular characterization by X-ray crystallography and circular dichroism revealed "tryptophan (Trp)-Zip" arrangements and/or hydrogen-bonded one-dimensional assembly depending on specific pseudopeptides and solvent environments. Our data indicated that pseudopeptosomes are formed in solutions by self-assembly of bispidine pseudopeptides (of Trp, leucine and alanine amino-acid constituents) into sheets that transform into vesicular structures. Thus, we showed that assembly of pseudopeptosomes utilizes the full spectrum of all four weak interactions essential in biological systems. Our findings have direct implications in chemical and synthetic biology, but may also provide a new avenue of investigations on origins of life
    MeSH term(s) Amino Acids/chemistry ; Peptides/chemistry ; Bridged Bicyclo Compounds, Heterocyclic ; Solvents/chemistry ; Tryptophan
    Chemical Substances bispidine ; Amino Acids ; Peptides ; Bridged Bicyclo Compounds, Heterocyclic ; Solvents ; Tryptophan (8DUH1N11BX)
    Language English
    Publishing date 2023-05-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d3ob00201b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Highly Efficient Intramolecular Excimer Formation in a Disulfide-Linked Dipyrenyl Compound: Proton Recognition and Fluidity Assessment.

    Juneja, Shreya / Mishra, Siddharth / Maurya, Govind / Haridas, V / Pandey, Siddharth

    The journal of physical chemistry. A

    2023  Volume 127, Issue 48, Page(s) 10197–10209

    Abstract: Intramolecular excimer formation has been utilized extensively in chemical sciences, especially to probe solvation within complex media as well as to assess physicochemical properties of the solubilizing milieu. Pyrene has been employed extensively as a ... ...

    Abstract Intramolecular excimer formation has been utilized extensively in chemical sciences, especially to probe solvation within complex media as well as to assess physicochemical properties of the solubilizing milieu. Pyrene has been employed extensively as a fluorescence probe for this purpose due to its favorable multidimensional fluorescence properties. Termini-capped dipyrenyl scaffolds possessing various functionalities comprise the majority of such compounds. A new both end-tagged dipyrenyl compound
    Language English
    Publishing date 2023-11-22
    Publishing country United States
    Document type Journal Article
    ISSN 1520-5215
    ISSN (online) 1520-5215
    DOI 10.1021/acs.jpca.3c06576
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  5. Article ; Online: Ratiometric Recognition of Protons by a Multiple Tagged Designer Fluorescent Chemosensor.

    Khokhar, Vaishali / Singh, Hanuman / Haridas, V / Pandey, Siddharth

    Journal of fluorescence

    2022  Volume 32, Issue 5, Page(s) 1851–1856

    Abstract: Molecular architecture with different fluorophoric units can offer improved and effective recognition of biologically important analytes. We present here a new strategy for the design of ratiometric chemosensors that operate by photoinduced electron ... ...

    Abstract Molecular architecture with different fluorophoric units can offer improved and effective recognition of biologically important analytes. We present here a new strategy for the design of ratiometric chemosensors that operate by photoinduced electron transfer (PET). This ratiometric sensor endowed with tryptophan and anthracene exhibits high sensitivity, excellent selectivity and remarkable reversibility towards recognition of H
    MeSH term(s) Amines ; Anthracenes ; Fluorescent Dyes ; Protons ; Spectrometry, Fluorescence/methods
    Chemical Substances Amines ; Anthracenes ; Fluorescent Dyes ; Protons
    Language English
    Publishing date 2022-06-22
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2016892-5
    ISSN 1573-4994 ; 1053-0509
    ISSN (online) 1573-4994
    ISSN 1053-0509
    DOI 10.1007/s10895-022-02999-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Designer peptides as versatile building blocks for functional materials.

    Dhawan, Sameer / Singh, Hanuman / Dutta, Souvik / Haridas, V

    Bioorganic & medicinal chemistry letters

    2022  Volume 68, Page(s) 128733

    Abstract: Peptides and pseudopeptides show distinct self-assembled nanostructures such as fibers, nanotubes, vesicles, micelles, toroids, helices and rods. The formation of such molecular communities through the collective behavior of molecules is not fully ... ...

    Abstract Peptides and pseudopeptides show distinct self-assembled nanostructures such as fibers, nanotubes, vesicles, micelles, toroids, helices and rods. The formation of such molecular communities through the collective behavior of molecules is not fully understood at a molecular level. All these self-assembled nanostructured materials have a wide range of applications such as drug delivery, gene delivery, biosensing, bioimaging, catalysis, tissue engineering, nano-electronics and sensing. Self-assembly is one of the most efficient and a simple strategy to generate complex functional materials. Owing to its significance, the last few decades witnessed a remarkable advancement in the field of self-assembling peptides with a plethora of new designer synthetic systems being discovered. These systems range from amphiphilic, cyclic, linear and polymeric peptides. This article presents only selected examples of such self-assembling peptides and pseudopeptides.
    MeSH term(s) Nanostructures/chemistry ; Peptides/chemistry ; Polymers ; Protein Structure, Secondary ; Tissue Engineering
    Chemical Substances Peptides ; Polymers
    Language English
    Publishing date 2022-04-12
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2022.128733
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  7. Article ; Online: Designer Peptide-PVDF Composite Films for High-Performance Energy Harvesting.

    Patranabish, Sourav / Dhawan, Sameer / Haridas, V / Sinha, Aloka

    Macromolecular rapid communications

    2022  Volume 43, Issue 23, Page(s) e2200493

    Abstract: Polymers and peptides have recently been considered as promising materials for piezoelectric energy harvesting because of their biocompatibility and enormous design possibility. However, achieving significant output voltages while meeting environmental ... ...

    Abstract Polymers and peptides have recently been considered as promising materials for piezoelectric energy harvesting because of their biocompatibility and enormous design possibility. However, achieving significant output voltages while meeting environmental safety requirements, low cost, and easy fabrication remains a major challenge. Herein, lipidated pseudopeptide incorporated poly(vinylidene fluoride) (PVDF) composite films are fabricated. Adding lipidated pseudopeptide (BLHA) increases the electroactive phase content, reaching the maximum for the 2 wt% composite film. The composite film containing 2 wt% BLHA manifests the highest dielectric constant and remnant polarization (P
    Language English
    Publishing date 2022-08-02
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1475027-2
    ISSN 1521-3927 ; 1022-1336
    ISSN (online) 1521-3927
    ISSN 1022-1336
    DOI 10.1002/marc.202200493
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  8. Article ; Online: Expanded triazolophanes: a topological analysis of vesicular assembly.

    Sapala, Appa Rao / Maurya, Govind P / Singh, Hanuman / Mehta, Neha / Karmakar, Tarak / Haridas, V

    Organic & biomolecular chemistry

    2023  Volume 21, Issue 26, Page(s) 5372–5376

    Abstract: Triazolophanes with larger ring sizes such as 40- and 42- were designed and synthesized. Ultramicroscopic studies on a variety of expanded triazolophanes and larger acyclic systems revealed vesicular self-assembly. The role of molecular topology on ... ...

    Abstract Triazolophanes with larger ring sizes such as 40- and 42- were designed and synthesized. Ultramicroscopic studies on a variety of expanded triazolophanes and larger acyclic systems revealed vesicular self-assembly. The role of molecular topology on vesicular assembly was systematically investigated by studying a series of molecules with increasing curvature.
    Language English
    Publishing date 2023-07-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/d3ob00868a
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  9. Article ; Online: Molecular Insights into the Inhibition of Dialysis-Related β2m Amyloidosis Orchestrated by a Bispidine Peptidomimetic Analogue.

    Mehta, Devanshu / Singh, Hanuman / Haridas, V / Chaudhuri, Tapan K

    Biochemistry

    2022  Volume 61, Issue 14, Page(s) 1473–1484

    Abstract: Dialysis-related amyloidosis (DRA) is considered an inescapable consequence of renal failure. Upon prolonged hemodialysis, it involves accumulation of toxic β2-microglobulin (β2m) amyloids in bones and joints. Current treatment methods are plagued with ... ...

    Abstract Dialysis-related amyloidosis (DRA) is considered an inescapable consequence of renal failure. Upon prolonged hemodialysis, it involves accumulation of toxic β2-microglobulin (β2m) amyloids in bones and joints. Current treatment methods are plagued with high cost, low specificity, and low capacity. Through our
    MeSH term(s) Amyloid ; Amyloidogenic Proteins ; Amyloidosis/drug therapy ; Bridged Bicyclo Compounds, Heterocyclic ; Humans ; Peptidomimetics/pharmacology ; Renal Dialysis ; beta 2-Microglobulin
    Chemical Substances Amyloid ; Amyloidogenic Proteins ; Bridged Bicyclo Compounds, Heterocyclic ; Peptidomimetics ; beta 2-Microglobulin ; bispidine
    Language English
    Publishing date 2022-06-24
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1108-3
    ISSN 1520-4995 ; 0006-2960
    ISSN (online) 1520-4995
    ISSN 0006-2960
    DOI 10.1021/acs.biochem.2c00205
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  10. Article ; Online: Fluorescence by self-assembly: autofluorescent peptide vesicles and fibers.

    Sapra, Rachit / Gupta, Monika / Khare, Kedar / Chowdhury, Pramit K / Haridas, V

    The Analyst

    2023  Volume 148, Issue 5, Page(s) 973–984

    Abstract: A series of oxidized cysteinyl peptides ([P-Cys-X-OMe] ...

    Abstract A series of oxidized cysteinyl peptides ([P-Cys-X-OMe]
    MeSH term(s) Peptides/chemistry ; Dipeptides ; Microscopy, Fluorescence ; Tryptophan/chemistry ; Water ; Fluorescent Dyes
    Chemical Substances Peptides ; Dipeptides ; Tryptophan (8DUH1N11BX) ; Water (059QF0KO0R) ; Fluorescent Dyes
    Language English
    Publishing date 2023-02-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 210747-8
    ISSN 1364-5528 ; 0003-2654
    ISSN (online) 1364-5528
    ISSN 0003-2654
    DOI 10.1039/d3an00124e
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