1
|
Sharma R, Sarkar S, Chattopadhayay S, Mondal J, Talukdar P. A Halogen-Bond-Driven Artificial Chloride-Selective Channel Constructed from 5-Iodoisophthalamide-based Molecules. Angew Chem Int Ed Engl 2024; 63:e202319919. [PMID: 38299773 DOI: 10.1002/anie.202319919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 02/02/2024]
Abstract
Despite considerable emphasis on advancing artificial ion channels, progress is constrained by the limited availability of small molecules with the necessary attributes of self-assembly and ion selectivity. In this study, a library of small molecules based on 5-haloisophthalamide and a non-halogenated isophthalamide were examined for their ion transport properties across the lipid bilayer membranes, and the finding demonstrates that the di-hexyl-substituted 5-iodoisophthalamide derivative exhibits the highest level of activity. Furthermore, it was established that the highest active compound facilitates the selective chloride transport that occurs via an antiport-mediated mechanism. The crystal structure of the compound unveils a distinctive self-assembly of molecules, forming a zig-zag channel pore that is well-suited for the permeation of anions. Planar bilayer conductance measurements proved the formation of chloride selective channels. A molecular dynamics simulation study, relying on the self-assembled component derived from the crystal structure, affirmed the paramount significance of intermolecular hydrogen bonding in the formation of supramolecular barrel-rosette structures that span the bilayer. Furthermore, it was demonstrated that the transport of chloride across the lipid bilayer membrane is facilitated by the synergistic effects of halogen bonding and hydrogen bonding within the channel.
Collapse
Affiliation(s)
- Rashmi Sharma
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Susmita Sarkar
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, 500046 Telangana, India
| | - Sandip Chattopadhayay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Jagannath Mondal
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, 500046 Telangana, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| |
Collapse
|
2
|
Mondal A, Siwach M, Ahmad M, Radhakrishnan SK, Talukdar P. Pyridyl-Linked Hetero Hydrazones: Transmembrane H +/Cl - Symporters with Efficient Antibacterial Activity. ACS Infect Dis 2024; 10:371-376. [PMID: 38262044 DOI: 10.1021/acsinfecdis.3c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
The development of potent antibacterial agents has become increasingly difficult as bacteria continue to evolve and develop resistance to antibiotics. It is therefore imperative to find effective antimicrobial agents that can address the evolving challenges posed by infectious diseases and antimicrobial resistance. Using artificial transmembrane ion transporters is an emerging and promising avenue to address this issue. We report pyridyl-linked hetero hydrazones as highly efficient transmembrane HCl symporters. These compounds offer an appropriate HCl binding site through cooperative protonation, followed by recognition of chloride ions. HCl transport by these compounds inhibits the growth of different Gram-negative bacterial strains with high efficacy by affecting the cell envelope homeostasis. This specific class of compounds holds substantial promise in the ongoing pursuit of developing highly efficient antibacterial agents.
Collapse
|
3
|
Chattopadhayay S, Ghosh A, Kumar Mukhopadhyay T, Sharma R, Datta A, Talukdar P. Supramolecular Barrel-Rosette Ion Channel Based on 3,5-Diaminobenzoic Acid for Cation-Anion Symport. Angew Chem Int Ed Engl 2023; 62:e202313712. [PMID: 37732556 DOI: 10.1002/anie.202313712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/22/2023]
Abstract
The structural tropology and functions of natural cation-anion symporting channels have been continuously investigated due to their crucial role in regulating various physiological functions. To understand the physiological functions of the natural symporter channels, it is vital to develop small-molecule-based biomimicking systems that can provide mechanistic insights into the ion-binding sites and the ion-translocation pathways. Herein, we report a series of bis((R)-(-)-mandelic acid)-linked 3,5-diaminobenzoic acid based self-assembled ion channels with distinctive ion transport ability. Ion transport experiment across the lipid bilayer membrane revealed that compound 1 b exhibits the highest transport activity among the series, and it has interesting selective co-transporting functions, i.e., facilitates K+ /ClO4 - symport. Electrophysiology experiments confirmed the formation of supramolecular ion channels with an average diameter of 6.2±1 Å and single channel conductance of 57.3±1.9 pS. Selectivity studies of channel 1 b in a bilayer lipid membrane demonstrated a permeability ratio ofP C l - / P K + = 0 . 053 ± 0 . 02 ${{P}_{{Cl}^{-}}/{P}_{{K}^{+}}=0.053\pm 0.02}$ ,P C l O 4 - / P C l - = 2 . 1 ± 0 . 5 ${{P}_{{ClO}_{4}^{-}}/{P}_{{Cl}^{-}}=2.1\pm 0.5}$ , andP K + / P N a + = 1 . 5 ± 1 , ${{P}_{{K}^{+}}/{P}_{{Na}^{+}}=1.5\pm 1,}$ indicating the higher selectivity of the channel towards KClO4 over KCl salt. A hexameric assembly of a trimeric rosette of 1 b was subjected to molecular dynamics simulations with different salts to understand the supramolecular channel formation and ion selectivity pattern.
Collapse
Affiliation(s)
- Sandip Chattopadhayay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008, Pune, Maharashtra, India
| | - Anupam Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Raja Subodh Chandra Mallick Road, Jadavpur, 700032, Kolkata, West Bengal, India
| | - Titas Kumar Mukhopadhyay
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Raja Subodh Chandra Mallick Road, Jadavpur, 700032, Kolkata, West Bengal, India
| | - Rashmi Sharma
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008, Pune, Maharashtra, India
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Raja Subodh Chandra Mallick Road, Jadavpur, 700032, Kolkata, West Bengal, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008, Pune, Maharashtra, India
| |
Collapse
|
4
|
Yousf S, Malla JA, Sardesai DM, Sharma S, Talukdar P, Chugh J. Mapping metabolic perturbations induced by glutathione activatable synthetic ion channels in human breast cancer cells. J Pharm Biomed Anal 2023; 235:115605. [PMID: 37531734 DOI: 10.1016/j.jpba.2023.115605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/04/2023]
Abstract
Ion channels and transporters play key roles in various biological processes, including cell proliferation and programmed cell death. Recently, we reported that 2,4-dinitrobenzene-sulfonyl-protected N1,N3-dihexy-2-hydroxyisophthalamide (1) forms ion channels upon activation by glutathione (GSH) and results in the induction of apoptosis by depleting the intracellular GSH reservoir in cancer cells. However, the detailed molecular events leading to the induction of apoptosis by these synthetic transport systems in cancer cells still need to be uncovered. Along these lines, we investigated the alterations in cellular metabolites and the associated metabolic pathways by performing untargeted global metabolic profiling of breast cancer cells - MCF-7 - using 1H NMR-based metabolomics. The evaluation of spectral profiles from MCF-7 cells exposed to 1 and their comparison with those corresponding to untreated (control) cells identified 14 significantly perturbed signature metabolites. These metabolites belonged mostly to antioxidant defence, energy metabolism, amino acid biosynthesis, and lipid metabolism pathways and included GSH, o-phosphocholine, malate, and aspartate, to name a few. These results would help us gain deeper insights into the molecular mechanism underlying 1-mediated cytotoxicity of MCF-7 cells and eventually help identify potential novel therapeutic targets for more effective cancer management.
Collapse
Affiliation(s)
- Saleem Yousf
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Javid A Malla
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Devika M Sardesai
- Department of Biotechnology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University (SPPU), Ganeshkhind, Pune 411007, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Jeetender Chugh
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| |
Collapse
|
5
|
Roy NJ, Save SN, Sharma VK, Abraham B, Kuttanamkuzhi A, Sharma S, Lahiri M, Talukdar P. NAD(P)H:Quinone Acceptor Oxidoreductase 1 (NQO1) Activatable Salicylamide H + /Cl - Transporters. Chemistry 2023; 29:e202301412. [PMID: 37345998 DOI: 10.1002/chem.202301412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/10/2023] [Accepted: 06/22/2023] [Indexed: 06/23/2023]
Abstract
NAD(P)H:quinone acceptor oxidoreductase 1 (NQO1), a detoxifying enzyme overexpressed in tumors, plays a key role in protecting cancer cells against oxidative stress and thus has been considered an attractive candidate for activating prodrug(s). Herein, we report the first use of NQO1 for the selective activation of 'protransporter' systems in cancer cells leading to the induction of apoptosis. Salicylamides, easily synthesizable small molecules, have been effectively used for efficient H+ /Cl- symport across lipid membranes. The ion transport activity of salicylamides was efficiently abated by caging the OH group with NQO1 activatable quinones via either ether or ester linkage. The release of active transporters, following the reduction of quinone caged 'protransporters' by NQO1, was verified. Both the transporters and protransporters exhibited significant toxicity towards the MCF-7 breast cancer line, mediated via the induction of oxidative stress, mitochondrial membrane depolarization, and lysosomal deacidification. Induction of cell death via intrinsic apoptotic pathway was verified by monitoring PARP1 cleavage.
Collapse
Affiliation(s)
- Naveen J Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shreyada N Save
- Department of Biotechnology, Savitribai Phule Pune University (Formerly University of Pune), Pune, 411007, Maharashtra, India
| | - Virender Kumar Sharma
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Benchamin Abraham
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Abhijith Kuttanamkuzhi
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University (Formerly University of Pune), Pune, 411007, Maharashtra, India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| |
Collapse
|
6
|
Ahmad M, Roy NJ, Singh A, Mondal D, Mondal A, Vijayakanth T, Lahiri M, Talukdar P. Photocontrolled activation of doubly o-nitrobenzyl-protected small molecule benzimidazoles leads to cancer cell death. Chem Sci 2023; 14:8897-8904. [PMID: 37621434 PMCID: PMC10445434 DOI: 10.1039/d3sc01786a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
Artificial biomimetic chloride anionophores have shown promising applications as anticancer scaffolds. Importantly, stimuli-responsive chloride transporters that can be selectively activated inside the cancer cells to avoid undesired toxicity to normal, healthy cells are very rare. Particularly, light-responsive systems promise better applicability for photodynamic therapy because of their spatiotemporal controllability, low toxicity, and high tunability. Here, in this work, we report o-nitrobenzyl-linked, benzimidazole-based singly and doubly protected photocaged protransporters 2a, 2b, 3a, and 3b, respectively, and benzimidazole-2-amine-based active transporters 1a-1d. Among the active compounds, trifluoromethyl-based anionophore 1a showed efficient ion transport activity (EC50 = 1.2 ± 0.2 μM). Detailed mechanistic studies revealed Cl-/NO3- antiport as the main ion transport process. Interestingly, double protection with photocages was found to be necessary to achieve the complete "OFF-state" that could be activated by external light. The procarriers were eventually activated inside the MCF-7 cancer cells to induce phototoxic cell death.
Collapse
Affiliation(s)
- Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Naveen J Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Anurag Singh
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Thangavel Vijayakanth
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 6997801 Israel
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
7
|
Mondal A, Save SN, Sarkar S, Mondal D, Mondal J, Sharma S, Talukdar P. A Benzohydrazide-Based Artificial Ion Channel that Modulates Chloride Ion Concentration in Cancer Cells and Induces Apoptosis by Disruption of Autophagy. J Am Chem Soc 2023; 145:9737-9745. [PMID: 37021819 DOI: 10.1021/jacs.3c01451] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Fluctuations in the intracellular chloride ion concentration, mediated by synthetic ion transporters, have been known to induce cytotoxicity in cells by disrupting ionic homeostasis. However, the activity of these transporters in modulating autophagy remains largely unexplored. Here, we report a benzoylbenzohydrazide (1c) that self-assembles to form a supramolecular nanochannel lumen that allows selective and efficient transport of chloride ions across the cell membranes, disrupts ion homeostasis, and thus leads to the induction of apoptosis in cancer cells. It is important to note that the transporter was relatively nontoxic to cells of noncancerous origin. 1c was also shown to induce the deacidification of lysosomes, thereby disrupting autophagy in cancer cells. Taken together, these findings provide a rare example of an artificial ion channel that specifically targets cancer cells by induction of apoptosis via disruption of autophagy.
Collapse
Affiliation(s)
- Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Shreyada N Save
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
| | - Susmita Sarkar
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad 500046, Telangana, India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Jagannath Mondal
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad 500046, Telangana, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| |
Collapse
|
8
|
Roy NJ, Pujari PL, Talukdar P. Bimodal structural tuning of pyrrole-2-carboxamide-based transmembrane ion transport systems. Org Biomol Chem 2023; 21:3323-3329. [PMID: 37009856 DOI: 10.1039/d3ob00269a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
The pyrrole-2-carboxamide moiety is well known for its presence in various natural products and its use in anion receptor systems. Here we assess the transmembrane anion transport activity of a series of substituted pyrrole-2-carboxamides and show them to be highly tuneable, versatile systems for anion transport by simple variations of pyrrole ring and amide substituents.
Collapse
Affiliation(s)
- Naveen J Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India.
| | - Parappa L Pujari
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India.
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India.
| |
Collapse
|
9
|
Sharma R, Vijay A, Chattopadhayay S, Mukherjee A, Talukdar P. Self-assembled anion channel formation by bis(1,3-propanediol)-linked meta-dipropynylbenzene-based small molecules. Chem Commun (Camb) 2023; 59:3602-3605. [PMID: 36883913 DOI: 10.1039/d2cc05155a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
Two self-assembled barrel-rosette ion channels have been developed using bis(1,3-propanediol)-linked m-dipropynylbenzene-based molecules. The system with an additional amide arm acted as a better channel compared to that having an ester arm. The amide-linked channel displayed substantial channel activity and excellent chloride selectivity in the lipid bilayer membranes. Molecular dynamics simulation studies confirmed efficient hydrogen-bonded self-assembly of the amide-linked bis(1,3-propanediol)-based molecules in the lipid bilayer membrane and the detection of chloride recognition in the cavity.
Collapse
Affiliation(s)
- Rashmi Sharma
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Amal Vijay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Sandip Chattopadhayay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Arnab Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| |
Collapse
|
10
|
Mondal A, Barik GK, Sarkar S, Mondal D, Ahmad M, Vijayakanth T, Mondal J, Santra MK, Talukdar P. Nontoxic Artificial Chloride Channel Formation in Epithelial Cells by Isophthalic Acid-Based Small Molecules. Chemistry 2023; 29:e202202887. [PMID: 36399427 DOI: 10.1002/chem.202202887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/19/2022]
Abstract
Artificial channels capable of facilitating the transport of Cl- ions across cell membranes while being nontoxic to the cells are rare. Such synthetic ion channels can mimic the functions of membrane transport proteins and, therefore, have the potential to treat channelopathies by replacing defective ion channels. Here we report isophthalic acid-based structurally simple molecules 1 a and 2 a, which self-assemble to render supramolecular nanochannels that allow selective transport of Cl- ions. As evident from the single-crystal X-ray diffraction analysis, the self-assembly is governed by intermolecular hydrogen bonding and π-π stacking interactions. The MD simulation studies for both 1 a and 2 a confirmed the formation of stable Cl- channel assembly in the lipid membrane and Cl- transport through them. The MQAE assay showed the efficacy of the compounds in delivering Cl- ions into cells, and the MTT assays proved that the compounds are nontoxic to cells even at a concentration of 100 μM.
Collapse
Affiliation(s)
- Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | | | - Susmita Sarkar
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, 500046, Telangana, India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Thangavel Vijayakanth
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel
| | - Jagannath Mondal
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research, Hyderabad, 500046, Telangana, India
| | | | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| |
Collapse
|
11
|
Abstract
The majority of cellular physiological processes depend on natural ion channels, which are pore-forming membrane-embedded proteins that let ions flow across the cell membranes selectively. This selective movement of ions across the membranes balances the osmolality within and outside the cell. However, mutations in the genes that encode essential membrane transport proteins or structural reorganisation of these proteins can cause life-threatening diseases like cystic fibrosis. Artificial ion transport systems have opened up a way to replace dysfunctional natural ion channels to cure such diseases through channel replacement therapy. Moreover, recent research has also demonstrated the ability of these systems to kill cancer cells, reigniting interest in the field among scientists. Our contributions to the recent progress in the design and development of artificial chloride ion transporters and their effect on biological systems have been discussed in this review. This review would provide current vistas and future directions toward the development of novel ion transporters with improved biocompatibility and desired anti-cancer properties. Additionally, it strongly emphasises stimuli-responsive ion transport systems, which are crucial for obtaining target-specificity and may speed up the application of these systems in clinical therapeutics.
Collapse
Affiliation(s)
- Abhishek Mondal
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Manzoor Ahmad
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India. .,Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Debashis Mondal
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India. .,Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirkii Wigury 101, Warsaw 02-089, Poland
| | - Pinaki Talukdar
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| |
Collapse
|
12
|
Uddin A, Malla JA, Kumar H, Kumari M, Sinha S, Sharma VK, Kumar Y, Talukdar P, Lahiri M, Maiti TK, Hazra P. Development of a Systematic Strategy toward Promotion of α-Synuclein Aggregation Using 2-Hydroxyisophthalamide-Based Systems. Biochemistry 2022; 61:2267-2279. [PMID: 36219819 DOI: 10.1021/acs.biochem.2c00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Establishing a potent scheme against α-synuclein aggregation involved in Parkinson's disease has been evaluated as a promising route to identify compounds that either inhibit or promote the aggregation process of α-synuclein. In the last two decades, this perspective has guided a dramatic increase in the efforts, focused on developing potent drugs either for retardation or promotion of the self-assembly process of α-synuclein. To address this issue, using a chemical kinetics platform, we developed a strategy that enabled a progressively detailed analysis of the molecular events leading to protein aggregation at the microscopic level in the presence of a recently synthesized 2-hydroxyisophthalamide class of small organic molecules based on their binding affinity. Furthermore, qualitatively, we have developed a strategy of disintegration of α-synuclein fibrils in the presence of these organic molecules. Finally, we have shown that these organic molecules effectively suppress the toxicity of α-synuclein oligomers in neuron cells.
Collapse
Affiliation(s)
- Aslam Uddin
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| | - Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| | - Harish Kumar
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru560065, India
| | - Manisha Kumari
- Functional Proteomics Laboratory, Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, Faridabad121001, India
| | - Suman Sinha
- Institute of Pharmaceutical Research, GLA University, Mathura281406, India
| | - Virender Kumar Sharma
- Department of Biology, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| | - Yashwant Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India.,National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bengaluru560065, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| | - Tushar Kanti Maiti
- Functional Proteomics Laboratory, Regional Centre for Biotechnology (RCB), NCR Biotech Science Cluster, Faridabad121001, India
| | - Partha Hazra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune411008, Maharashtra, India
| |
Collapse
|
13
|
Mondal D, Dandekar BR, Ahmad M, Mondal A, Mondal J, Talukdar P. Selective and rapid water transportation across a self-assembled peptide-diol channel via the formation of a dual water array. Chem Sci 2022; 13:9614-9623. [PMID: 36091906 PMCID: PMC9400608 DOI: 10.1039/d2sc01737g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022] Open
Abstract
Achieving superfast water transport by using synthetically designed molecular artifacts, which exclude salts and protons, is a challenging task in separation science today, as it requires the concomitant presence of a proper water-binding site and necessary selectivity filter for transporting water. Here, we demonstrate the water channel behavior of two configurationally different peptide diol isomers that mimic the natural water channel system, i.e., aquaporins. The solid-state morphology studies showed the formation of a self-assembled aggregated structure, and X-ray crystal structure analysis confirmed the formation of a nanotubular assembly that comprises two distinct water channels. The water permeabilities of all six compounds were evaluated and are found to transport water by excluding salts and protons with a water permeability rate of 5.05 × 108 water molecules per s per channel, which is around one order of magnitude less than the water permeability rate of aquaporins. MD simulation studies showed that the system forms a stable water channel inside the bilayer membrane under ambient conditions, with a 2 × 8 layered assembly, and efficiently transports water molecules by forming two distinct water arrays within the channel.
Collapse
Affiliation(s)
- Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Bhupendra R Dandekar
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad 500046 Telangana India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Jagannath Mondal
- Center for Interdisciplinary Sciences, Tata Institute of Fundamental Research Hyderabad 500046 Telangana India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
14
|
Malla JA, Upadhyay A, Ghosh P, Mondal D, Mondal A, Sharma S, Talukdar P. Chloride Transport across Liposomes and Cells by Nontoxic 3-(1 H-1,2,3-Triazol-1-yl)benzamides. Org Lett 2022; 24:4124-4128. [PMID: 35657329 DOI: 10.1021/acs.orglett.2c01219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic anion transmembrane transporters are adding new aspirations for treating channelopathies by replacing defective ion channels. The availability of such suitable candidates is still infrequent due to the associated toxicity. Here, we report 3-(1H-1,2,3-triazol-1-yl)benzamides as transmembrane anion carriers, nontoxic to cells. The selective and electrogenic chloride transport activity was established by fluorescence and ion selective electrode-based assays. MQAE assay confirmed the chloride uptake into the cells by the nontoxic compounds.
Collapse
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| | - Avisikta Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| | - Pulak Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| | - Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University, 411007 Pune, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India
| |
Collapse
|
15
|
Ahmad M, Mondal D, Roy NJ, Vijayakanth T, Talukdar P. Reversible Stimuli‐Responsive Transmembrane Ion Transport using Phenylhydrazone‐Based Photoswitches. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Manzoor Ahmad
- Indian Institute of Science Education and Research Pune Chemistry Department INDIA
| | - Debashis Mondal
- Indian Institute of Science Education and Research Pune Chemistry Department INDIA
| | - Naveen J. Roy
- Indian Institute of Science Education and Research Pune Chemistry Department INDIA
| | | | - Pinaki Talukdar
- Indian Institute of Science Education and Research Pune Department of Chemistry Main BuildingDr. Homi Bhabha Road, Pashan 411008 Pune INDIA
| |
Collapse
|
16
|
Ren C, Talukdar P, Zeng H. Editorial: Artificial Membrane Transporters. Front Chem 2022; 10:841159. [PMID: 35186887 PMCID: PMC8847604 DOI: 10.3389/fchem.2022.841159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/06/2022] [Indexed: 12/05/2022] Open
Affiliation(s)
- Changliang Ren
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, China
- Shenzhen Research Institute of Xiamen University, Shenzhen, China
- *Correspondence: Changliang Ren, ; Pinaki Talukdar, ; Huaqiang Zeng,
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, India
- *Correspondence: Changliang Ren, ; Pinaki Talukdar, ; Huaqiang Zeng,
| | - Huaqiang Zeng
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, China
- *Correspondence: Changliang Ren, ; Pinaki Talukdar, ; Huaqiang Zeng,
| |
Collapse
|
17
|
Sharma R, Vijay A, Mukherjee A, Talukdar P. Bis(cholyl)-based chloride channels with oxalamide and hydrazide selectivity filters. Org Biomol Chem 2022; 20:2054-2058. [DOI: 10.1039/d1ob02028e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the development of supramolecular bis(cholyl) ion channels by using oxalamide and hydrazide as selectivity filters. The hydrazide system displayed superior chloride transport activity than oxalamide via the formation...
Collapse
|
18
|
Mondal D, Ahmad M, Panwaria P, Upadhyay A, Talukdar P. Anion Recognition through Multivalent C-H Hydrogen Bonds: Anion-Induced Foldamer Formation and Transport across Phospholipid Membranes. J Org Chem 2021; 87:10-17. [PMID: 34908424 DOI: 10.1021/acs.joc.1c01408] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of triazole-cyanostilbene receptors were designed and synthesized. The receptor binds with the anions through various CH···anion hydrogen bonding interactions, where strong binding was observed for SO42- anions followed by Cl-, Br-, NO3-, and I-, calculated from the 1H NMR titration experiment. The NOESY NMR experiment of the receptor confirmed the formation of anion-induced folded conformation. The CH···anion hydrogen bonding interaction-mediated anion recognition and foldamer formation were further confirmed from geometry optimization studies of the anion-bound complex. The receptor transports Cl- anions efficiently compared to SO42- anions across the lipid bilayer membrane via a mobile carrier mechanism.
Collapse
Affiliation(s)
- Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Prakash Panwaria
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Avisikta Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| |
Collapse
|
19
|
Malla JA, Ahmad M, Talukdar P. Molecular Self-Assembly as a Tool to Construct Transmembrane Supramolecular Ion Channels. CHEM REC 2021; 22:e202100225. [PMID: 34766703 DOI: 10.1002/tcr.202100225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 12/12/2022]
Abstract
Self-assembly has become a powerful tool for building various supramolecular architectures with applications in material science, environmental science, and chemical biology. One such area is the development of artificial transmembrane ion channels that mimic naturally occurring channel-forming proteins to unveil various structural and functional aspects of these complex biological systems, hoping to replace the defective protein channels with these synthetically accessible moieties. This account describes our recent approaches to construct supramolecular ion channels using synthetic molecules and their applications in medicinal chemistry.
Collapse
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| |
Collapse
|
20
|
Yudina ON, Gening ML, Talukdar P, Gerbst AG, Tsvetkov YE, Nifantiev NE. Synthesis of a cyclic tetramer of 3-amino-3-deoxyallose with axially oriented amino groups. Carbohydr Res 2021; 511:108476. [PMID: 34800752 DOI: 10.1016/j.carres.2021.108476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 12/01/2022]
Abstract
A linear tetramer of β-(1 → 6)-linked 3-azido-3-deoxy-d-allose containing glycosyl donor and glycosyl acceptor functions in the terminal monosaccharide units was prepared starting from 3-azido-3-deoxy-1,2:5,6-di-O-isopropylidene-α-d-allofuranose. Cyclization of the linear tetramer under glycosylation conditions afforded the corresponding cyclic tetrasaccharide in 77% yield; its deprotection and reduction of the azido groups resulted in the formation of the cyclic tetramer of 3-amino-3-deoxy-d-allose with axial amino groups, a potential scaffold for the synthesis of tetravalent functional clusters.
Collapse
Affiliation(s)
- Olga N Yudina
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, 119991, Moscow, Russian Federation
| | - Marina L Gening
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, 119991, Moscow, Russian Federation
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Alexey G Gerbst
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, 119991, Moscow, Russian Federation
| | - Yury E Tsvetkov
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, 119991, Moscow, Russian Federation
| | - Nikolay E Nifantiev
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp, 119991, Moscow, Russian Federation.
| |
Collapse
|
21
|
Abstract
Several life-threatening diseases, also known as 'Channelopathies' are linked to irregularities in ion transport proteins. Significant research efforts have fostered the development of artificial transport systems that facilitates to restore the functions of impaired natural transport proteins. Indeed, a few of these artificial ionophores demonstrate the rare combination of transmembrane ion transport and important biological activity, offering early promises of suitability in 'channel replacement therapy'. In this review, structural facets and functions of both cationophores and anionophores are discussed. Ionophores that are toxic to various bacteria and yeast, could be exploited as antimicrobial agent. Nevertheless, few non-toxic ionophores offer the likelihood of treating a wide range of genetic diseases caused by the gene mutations. In addition, their ability to disrupt cellular homeostasis and to alter lysosomal pH endow ionophores as promising candidates for cancer treatment. Overall, critically outlining the advances in artificial ionophores in terms of in vitro ion transport, possible modes of action and biological activities enables us to propose possible future roadmaps in this research area.
Collapse
Affiliation(s)
- Arundhati Roy
- Department of Pharmacy, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
| |
Collapse
|
22
|
Ahmad M, Chattopadhayay S, Mondal D, Vijayakanth T, Talukdar P. Stimuli-Responsive Anion Transport through Acylhydrazone-Based Synthetic Anionophores. Org Lett 2021; 23:7319-7324. [PMID: 34519509 DOI: 10.1021/acs.orglett.1c02249] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photoswitchable acylhydrazone-based synthetic anionophores are reported. Single-crystal X-ray structure and 1H NMR titration studies confirmed the chloride binding in solid and solution states. The ion transport activity of 1a was greatly attenuated through a phototriggered E to Z photoisomerization process, and the photoisomerized deactivated state showed high kinetic stability due to an intramolecular hydrogen bond. Switchable "OFF-ON" transport activity was achieved by the application of light and acid-catalyzed reactivation process.
Collapse
Affiliation(s)
- Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Sandip Chattopadhayay
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| | - Thangavel Vijayakanth
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India
| |
Collapse
|
23
|
Mondal A, Malla JA, Paithankar H, Sharma S, Chugh J, Talukdar P. A Pyridyl-Linked Benzimidazolyl Tautomer Facilitates Prodigious H +/Cl - Symport through a Cooperative Protonation and Chloride Ion Recognition. Org Lett 2021; 23:6131-6136. [PMID: 34319120 DOI: 10.1021/acs.orglett.1c02235] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report two pyridyl-linked benzimidazolyl hydrazones as HCl cotransporters that are 5 and 2 times superior to prodigiosin, a natural product whose transport efficiency has never been routed by synthetic molecules. These hydrazones provide a suitable HCl binding site through a cooperative protonation and chloride ion recognition. HCl transport by the most active compound induces lysosome deacidification. Viability assays confirmed that the compounds induce cytotoxicity toward human breast cancer MCF-7 cells but are relatively nontoxic toward noncancerous HEK293T cells.
Collapse
Affiliation(s)
- Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India
| | - Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India
| | - Harshad Paithankar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University, Pune, 411007 Maharashtra, India
| | - Jeetender Chugh
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India.,Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India
| |
Collapse
|
24
|
Malla JA, Sharma VK, Lahiri M, Talukdar P. Cover Feature: Esterase‐Activatable Synthetic M
+
/Cl
−
Channel Induces Apoptosis and Disrupts Autophagy in Cancer Cells (Chem. Eur. J. 52/2020). Chemistry 2020. [DOI: 10.1002/chem.202003881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Javid Ahmad Malla
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
| | - Virender Kumar Sharma
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Mayurika Lahiri
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
| |
Collapse
|
25
|
Malla JA, Sharma VK, Lahiri M, Talukdar P. Esterase‐Activatable Synthetic M
+
/Cl
−
Channel Induces Apoptosis and Disrupts Autophagy in Cancer Cells. Chemistry 2020; 26:11946-11949. [DOI: 10.1002/chem.202002964] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Indexed: 01/25/2023]
Affiliation(s)
- Javid Ahmad Malla
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
| | - Virender Kumar Sharma
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Mayurika Lahiri
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
| |
Collapse
|
26
|
Abstract
There has been a tremendous evolution for artificial ion transport systems, especially gated synthetic systems, which closely mimic their natural congeners. Herein, we demonstrate a trans-azobenzene-based photoregulatory anionophoric system that transports chloride by forming a sandwich dimeric complex. Further studies confirmed a carrier-mediated chloride-anion antiport mechanism, and the supramolecular interactions involved in chloride recognition within the sandwich complex were revealed from theoretical studies. Reversible trans-cis photoisomerization of the azobenzene was achieved without any significant contribution from the thermal cis→trans isomerization at room temperature. Photoregulatory transport activity across the lipid bilayer membrane inferred an outstanding off-on response of the azobenzene photoswitch.
Collapse
Affiliation(s)
- Manzoor Ahmad
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Surajit Metya
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Aloke Das
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Pinaki Talukdar
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| |
Collapse
|
27
|
Malla JA, Umesh RM, Yousf S, Mane S, Sharma S, Lahiri M, Talukdar P. A Glutathione Activatable Ion Channel Induces Apoptosis in Cancer Cells by Depleting Intracellular Glutathione Levels. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000961] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Rintu M. Umesh
- Department of Biology Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Saleem Yousf
- Department of Chemistry Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Shrunal Mane
- Department of Biology Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Shilpy Sharma
- Department of Biotechnology Savitribai Phule Pune University (Formerly University of Pune) Pune Maharashtra 411007 India
| | - Mayurika Lahiri
- Department of Biology Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry Indian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
28
|
Malla JA, Umesh RM, Yousf S, Mane S, Sharma S, Lahiri M, Talukdar P. A Glutathione Activatable Ion Channel Induces Apoptosis in Cancer Cells by Depleting Intracellular Glutathione Levels. Angew Chem Int Ed Engl 2020; 59:7944-7952. [PMID: 32048775 DOI: 10.1002/anie.202000961] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/11/2020] [Indexed: 01/30/2023]
Abstract
Cancer cells use elevated glutathione (GSH) levels as an inner line of defense to evade apoptosis and develop drug resistance. In this study, we describe a novel 2,4-nitrobenzenesulfonyl (DNS) protected 2-hydroxyisophthalamide system that exploits GSH for its activation into free 2-hydroxyisophthalamide forming supramolecular M+ /Cl- channels. Better permeation of the DNS protected compound into MCF-7 cells compared to the free 2-hydroxyisophthalamide and GSH-activatable ion transport resulted in higher cytotoxicity, which was associated with increased oxidative stress that further reduced the intracellular GSH levels and altered mitochondrial membrane permeability leading to the induction of the intrinsic apoptosis pathway. The GSH-activatable transport-mediated cell death was further validated in rat insulinoma cells (INS-1E); wherein the intracellular GSH levels showed a direct correlation to the resulting cytotoxicity. Lastly, the active compound was found to restrict the growth and proliferation of 3D spheroids of MCF-7 cells with efficiency similar to that of the anticancer drug doxorubicin.
Collapse
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Rintu M Umesh
- Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Saleem Yousf
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shrunal Mane
- Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University (Formerly University of Pune), Pune, Maharashtra, 411007, India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| |
Collapse
|
29
|
Malla JA, Umesh RM, Vijay A, Mukherjee A, Lahiri M, Talukdar P. Apoptosis-inducing activity of a fluorescent barrel-rosette M +/Cl - channel. Chem Sci 2020; 11:2420-2428. [PMID: 34084406 PMCID: PMC8157539 DOI: 10.1039/c9sc06520b] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 01/16/2020] [Indexed: 01/03/2023] Open
Abstract
Synthetic transmembrane ion transport systems are emerging as new tools for anticancer therapy. Here, a series of 2-hydroxy-N 1,N 3-diarylisophthalamide-based fluorescent ion channel-forming compounds are reported. Ion transport studies across large unilamellar vesicles confirmed that the compound with two 3,5-bis(trifluoromethyl)phenyl arms is the most efficient transporter among the series and it facilitates M+/Cl- symport. The compound formed supramolecular ion channels with a single-channel conductance of 100 ± 2 pS, a diameter of 5.06 ± 0.16 Å and a permeability ratio, P Cl- /P K+ , of 8.29 ± 1. The molecular dynamics simulations of the proposed M2.11 channel (i.e. 11 coaxial layers of a dimeric rosette) with K+ and Cl- in the preequilibrated POPC lipid bilayer with water molecules illustrated various aspects of channel formation and ion permeation. Cell viability assay with the designed compounds indicated that cell death is being induced by the individual compounds which follow the order of their ion transport activity and chloride and cations play roles in cell death. The inherent fluorescence of the most active transporter was helpful to monitor its permeation in cells by confocal microscopy. The apoptosis-inducing activity upon perturbation of intracellular ionic homeostasis was established by monitoring mitochondrial membrane depolarization, generation of reactive oxygen species, cytochrome c release, activation of the caspase 9 pathway, and finally the uptake of the propidium iodide dye in the treated MCF7 cells.
Collapse
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Rintu M Umesh
- Department of Biology, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Amal Vijay
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Arnab Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
30
|
Burade SS, Pawar SV, Saha T, Kumbhar N, Kotmale AS, Ahmad M, Talukdar P, Dhavale DD. Sugar-derived oxazolone pseudotetrapeptide as γ-turn inducer and anion-selective transporter. Beilstein J Org Chem 2019; 15:2419-2427. [PMID: 31666876 PMCID: PMC6808195 DOI: 10.3762/bjoc.15.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 09/23/2019] [Indexed: 12/02/2022] Open
Abstract
The intramolecular cyclization of a C-3-tetrasubstituted furanoid sugar amino acid-derived linear tetrapeptide afforded an oxazolone pseudo-peptide with the formation of an oxazole ring at the C-terminus. A conformational study of the oxazolone pseudo-peptide showed intramolecular C=O···HN(II) hydrogen bonding in a seven-membered ring leading to a γ-turn conformation. This fact was supported by a solution-state NMR and molecular modeling studies. The oxazolone pseudotetrapeptide was found to be a better Cl−-selective transporter for which an anion–anion antiport mechanism was established.
Collapse
Affiliation(s)
- Sachin S Burade
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly University of Pune), Pune 411007, India
| | - Sushil V Pawar
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly University of Pune), Pune 411007, India
| | - Tanmoy Saha
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Navanath Kumbhar
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly University of Pune), Pune 411007, India
| | - Amol S Kotmale
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly University of Pune), Pune 411007, India
| | - Manzoor Ahmad
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Pinaki Talukdar
- Indian Institute of Science Education and Research, Pune, Pune 411008, India
| | - Dilip D Dhavale
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly University of Pune), Pune 411007, India
| |
Collapse
|
31
|
Salunke SB, Malla JA, Talukdar P. Phototriggered Release of a Transmembrane Chloride Carrier from an
o
‐Nitrobenzyl‐Linked Procarrier. Angew Chem Int Ed Engl 2019; 58:5354-5358. [DOI: 10.1002/anie.201900869] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Swati Bansi Salunke
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Javid Ahmad Malla
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
32
|
Salunke SB, Malla JA, Talukdar P. Phototriggered Release of a Transmembrane Chloride Carrier from an
o
‐Nitrobenzyl‐Linked Procarrier. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900869] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Swati Bansi Salunke
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Javid Ahmad Malla
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
33
|
Abstract
Bis(amide) appended imidazole having a sickle-shaped trivalent hydrogen-bonding structure reported as a transmembrane H+/Cl− symporter.
Collapse
Affiliation(s)
- Sopan Valiba Shinde
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
34
|
Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| | - Arundhati Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, 411008, India
| |
Collapse
|
35
|
Roy A, Gautam A, Malla JA, Sarkar S, Mukherjee A, Talukdar P. Self-assembly of small-molecule fumaramides allows transmembrane chloride channel formation. Chem Commun (Camb) 2018; 54:2024-2027. [DOI: 10.1039/c7cc08693h] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intermolecular hydrogen bonding of N1,N4-dicyclohexylfumaramide favors the formation of self-assembled ion channels, which facilitates selective Cl− transport across a lipid bilayer membrane.
Collapse
Affiliation(s)
- Arundhati Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Amitosh Gautam
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Sohini Sarkar
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Arnab Mukherjee
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
36
|
Abstract
Tris-carboxyamide and tris-sulfonamide-based anion receptors with cyanuric acid core are developed for transmembrane chloride transport.
Collapse
Affiliation(s)
- Debashis Mondal
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Anjana Sathyan
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Sopan V. Shinde
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Kamal K. Mishra
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
37
|
Shinde SV, Talukdar P. An anion receptor that facilitates transmembrane proton–anion symport by deprotonating its sulfonamide N–H proton. Chem Commun (Camb) 2018; 54:10351-10354. [DOI: 10.1039/c8cc04044c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Indole-based amide-sulfonamide derivatives were synthesized. The X-ray crystal structure and chloride binding studies in solution showed a 1 : 1 stoichiometry. The ion transport study indicated the proton–anion symport across the lipid bilayer membrane.
Collapse
Affiliation(s)
- Sopan Valiba Shinde
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
38
|
Burade SS, Saha T, Bhuma N, Kumbhar N, Kotmale A, Rajamohanan PR, Gonnade RG, Talukdar P, Dhavale DD. Self-Assembly of Fluorinated Sugar Amino Acid Derived α,γ-Cyclic Peptides into Transmembrane Anion Transport. Org Lett 2017; 19:5948-5951. [DOI: 10.1021/acs.orglett.7b02942] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sachin S. Burade
- Garware
Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University), Pune 411007, India
| | - Tanmoy Saha
- Indian Institute of Science Education and Research (IISER), Pune 411008, India
| | - Naresh Bhuma
- Garware
Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University), Pune 411007, India
| | - Navanath Kumbhar
- Garware
Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University), Pune 411007, India
| | | | | | | | - Pinaki Talukdar
- Indian Institute of Science Education and Research (IISER), Pune 411008, India
| | - Dilip D. Dhavale
- Garware
Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University), Pune 411007, India
| |
Collapse
|
39
|
Burade SS, Shinde SV, Bhuma N, Kumbhar N, Kotmale A, Rajamohanan PR, Gonnade RG, Talukdar P, Dhavale DD. Acyclic αγα-Tripeptides with Fluorinated- and Nonfluorinated-Furanoid Sugar Framework: Importance of Fluoro Substituent in Reverse-Turn Induced Self-Assembly and Transmembrane Ion-Transport Activity. J Org Chem 2017; 82:5826-5834. [PMID: 28485150 DOI: 10.1021/acs.joc.7b00661] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Acyclic αγα-tripeptides derived from fluorinated-furanoid sugar amino acid frameworks act as reverse-turn inducers with a U-shaped conformation, whereas the corresponding nonfluorinated αγα-tripeptides show random peptide conformations. The NMR studies showed the presence of bifurcated weak intramolecular hydrogen bonding (F···HN) and N+···Fδ- charge-dipole attraction compel the amide carbonyl groups to orient antiperiplanar to the C-F bond, thus, demonstrating the role of the fluorine substituent in stabilizing the U-shaped conformation. The NOESY data indicate that the U-shaped tripeptides self-assembly formation is stabilized by the intermolecular hydrogen bonding between C═O···HN with antiparallel orientation. This fact is supported by ESI-MS data, which showed mass peaks up to the pentameric self-assembly, even in the gas phase. The morphological analysis by FE-SEM, on solid samples, showed arrangement of fibers into nanorods. The antiparallel self-assembled pore of the fluorinated tripeptides illustrates the selective ion-transport activity. The experimental findings were supported by DFT studies.
Collapse
Affiliation(s)
- Sachin S Burade
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | - Sopan Valiba Shinde
- Indian Institute of Science Education and Research (IISER) , Pune 411008, India
| | - Naresh Bhuma
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | - Navanath Kumbhar
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| | | | | | | | - Pinaki Talukdar
- Indian Institute of Science Education and Research (IISER) , Pune 411008, India
| | - Dilip D Dhavale
- Garware Research Center, Department of Chemistry, Savitribai Phule Pune University (formerly Pune University) , Pune 411007, India
| |
Collapse
|
40
|
Affiliation(s)
- Sopan Valiba Shinde
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
41
|
Shinde SV, Talukdar P. A Dimeric Bis(melamine)-Substituted Bispidine for Efficient Transmembrane H+/Cl−Cotransport. Angew Chem Int Ed Engl 2017; 56:4238-4242. [DOI: 10.1002/anie.201700803] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Sopan Valiba Shinde
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| |
Collapse
|
42
|
Chauhan DP, Varma SJ, Gudem M, Panigrahi N, Singh K, Hazra A, Talukdar P. Intramolecular cascade rearrangements of enynamine derived ketenimines: access to acyclic and cyclic amidines. Org Biomol Chem 2017; 15:4822-4830. [DOI: 10.1039/c7ob00499k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Copper-catalyzed reaction of enynamine with sulfonylazide generates a ketenimine intermediate which further undergoes rearrangements to form acyclic and cyclic amidines.
Collapse
Affiliation(s)
| | - Sreejith J. Varma
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Mahesh Gudem
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Nihar Panigrahi
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Khushboo Singh
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Anirban Hazra
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
43
|
Abstract
Bis(sulfonamide) based synthetic carriers are reported for inversion of ion selectivity upon deviation of pH within a narrow window. A liposomal membrane potential is also generated when potassium ions are passively transported by these carriers.
Collapse
Affiliation(s)
- Arundhati Roy
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Oindrila Biswas
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- Pune 411008
- India
| |
Collapse
|
44
|
Roy A, Saha D, Mandal PS, Mukherjee A, Talukdar P. pH-Gated Chloride Transport by a Triazine-Based Tripodal Semicage. Chemistry 2016; 23:1241-1247. [DOI: 10.1002/chem.201605033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Arundhati Roy
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008, Maharashtra India
| | - Debasis Saha
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008, Maharashtra India
| | - Prashant Sahebrao Mandal
- Department of Chemistry; Institute of Chemical Technology, Matunga; Mumbai- 400019, Maharashtra India
| | - Arnab Mukherjee
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008, Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry; Indian Institute of Science Education and Research Pune; Dr. Homi Bhabha Road, Pashan Pune 411008, Maharashtra India
| |
Collapse
|
45
|
Deka DJ, Choudhury B, Talukdar P, Lo TQ, Das B, Nair SA, Moonan PK, Kumar AMV. What a difference a day makes: same-day vs. 2-day sputum smear microscopy for diagnosing tuberculosis. Public Health Action 2016; 6:232-236. [PMID: 28123959 DOI: 10.5588/pha.16.0062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 09/30/2016] [Indexed: 11/10/2022] Open
Abstract
Setting: Nine district-level microscopy centres in Assam and Tripura, India. Objective: Same-day sputum microscopy is now recommended for tuberculosis (TB) diagnosis. We compared this method against the conventional 2-day approach in routine programmatic settings. Methods: During October-December 2012, all adult presumptive TB patients were requested to provide three sputum samples (one at the initial visit, the second 1 h after the first sample, and the third the next morning) for examination by Ziehl-Neelsen smear microscopy. Detection of acid-fast bacilli with any sample was diagnostic. The first and second spot sample comprised the same-day approach, and the first spot sample and next-day sample comprised the 2-day approach. Results: Of 2168 presumptive TB patients, 403 (18.6%) were smear-positive according to the same-day method compared to 427 (19.7%) by the 2-day method (McNemar's test, P < 0.001). Of the total 429 TB patients, 26 (6.1%) were missed by the same-day method and 2 (0.5%) by the 2-day method. Conclusion: Same-day specimen collection for microscopy missed more TB than 2-day collection. In India, missing cases by using same-day microscopy would translate into a considerable absolute number, hindering TB control efforts. We question the indiscriminate switch to same-day diagnosis in settings where patients reliably return for testing the next day.
Collapse
Affiliation(s)
- D J Deka
- World Health Organization Country Office for India, New Delhi, India
| | - B Choudhury
- Department of Health, Government of Assam, Guwahati, Assam, India
| | - P Talukdar
- World Health Organization Country Office for India, New Delhi, India
| | - T Q Lo
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - B Das
- Department of Health, Government of Tripura, Agartala, Tripura, India
| | - S A Nair
- World Health Organization Country Office for India, New Delhi, India
| | - P K Moonan
- Division of Global HIV and Tuberculosis, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - A M V Kumar
- International Union Against Tuberculosis and Lung Disease (The Union), Paris, France ; The Union, South-East Asia Office, New Delhi, India
| |
Collapse
|
46
|
Saha T, Gautam A, Mukherjee A, Lahiri M, Talukdar P. Chloride Transport through Supramolecular Barrel-Rosette Ion Channels: Lipophilic Control and Apoptosis-Inducing Activity. J Am Chem Soc 2016; 138:16443-16451. [DOI: 10.1021/jacs.6b10379] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tanmoy Saha
- Department
of Chemistry and ‡Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| | - Amitosh Gautam
- Department
of Chemistry and ‡Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| | - Arnab Mukherjee
- Department
of Chemistry and ‡Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| | - Mayurika Lahiri
- Department
of Chemistry and ‡Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| | - Pinaki Talukdar
- Department
of Chemistry and ‡Department of Biology, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India
| |
Collapse
|
47
|
Roy A, Saha D, Mukherjee A, Talukdar P. One-Pot Synthesis and Transmembrane Chloride Transport Properties of C3-Symmetric Benzoxazine Urea. Org Lett 2016; 18:5864-5867. [DOI: 10.1021/acs.orglett.6b02940] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Arundhati Roy
- Department
of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha
Road, Pashan, Pune, 411008 Maharashtra, India
| | - Debasis Saha
- Department
of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha
Road, Pashan, Pune, 411008 Maharashtra, India
| | - Arnab Mukherjee
- Department
of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha
Road, Pashan, Pune, 411008 Maharashtra, India
| | - Pinaki Talukdar
- Department
of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha
Road, Pashan, Pune, 411008 Maharashtra, India
| |
Collapse
|
48
|
Deshmukh S, Rana S, Shinde SV, Dhara B, Ballav N, Talukdar P. Selective Sensing of Metal Ions and Nitro Explosives by Efficient Switching of Excimer-to-Monomer Emission of an Amphiphilic Pyrene Derivative. ACS Omega 2016; 1:371-377. [PMID: 30023481 PMCID: PMC6044616 DOI: 10.1021/acsomega.6b00136] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 08/31/2016] [Indexed: 05/09/2023]
Abstract
An amphiphilic pyrene derivative exhibiting unusually stable excimer emission due to strong aggregation is presented. The aggregated system served as an intelligent sensor for metal ions and nitro explosives in aqueous media. The excimer displayed excellent selectivity toward Cu2+ among the tested cations. The observation was interpreted on the basis of chelation of metal ions involving the hydroxyl and amino groups of two molecules, leading to the ligand-to-metal charge-transfer (CT) process. The excimer was further applied for the cell imaging of Cu2+ ions. Also, while treating the excimer with various nitro explosives, it displayed efficient 2,4,6-trinitrophenol sensing, corroborating mainly the CT process from pyrene to the analyte due to intercalation of the analyte within pyrene.
Collapse
|
49
|
Saha T, Hossain MS, Saha D, Lahiri M, Talukdar P. Chloride-Mediated Apoptosis-Inducing Activity of Bis(sulfonamide) Anionophores. J Am Chem Soc 2016; 138:7558-67. [DOI: 10.1021/jacs.6b01723] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tanmoy Saha
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, Maharashtra 411008, India
| | - Munshi Sahid Hossain
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, Maharashtra 411008, India
| | - Debasis Saha
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, Maharashtra 411008, India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research Pune, Pune, Maharashtra 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Pune, Maharashtra 411008, India
| |
Collapse
|
50
|
Shinde SV, Kulkarni M, Talukdar P. Helical supramolecular organization of a 1,2-diol appended naphthalene diimide organogelator via an extended intermolecular H-bonding network. RSC Adv 2016. [DOI: 10.1039/c6ra02729f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hydrogen bonded self-assembly of a 1,2-diol linked naphthalene diimide derivative features M-helical and J-type aggregation. In MCH/CHCl3, the compound exhibits intense yellow excimer and thermoreversible “sol–gel” behavior.
Collapse
Affiliation(s)
- Sopan Valiba Shinde
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- India
| | - Mandar Kulkarni
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- India
| | - Pinaki Talukdar
- Department of Chemistry
- Indian Institute of Science Education and Research Pune
- India
| |
Collapse
|