1
|
Yang J, Zhang J, Liu Y, Shi Z, Han H, Li Q. Phenylboronic acid-modified polyamidoamine-mediated delivery of short GC rich DNA for hepatocarcinoma gene therapy. Biomater Sci 2019; 7:3348-3358. [DOI: 10.1039/c9bm00394k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phenylboronic acid was introduced on the surface of polyamidoamine to construct a derivative PP, which was further used as a tumor-targeting carrier for realizing the delivery of short GC rich DNA (GCD).
Collapse
Affiliation(s)
- Jiebing Yang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Jiayuan Zhang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Yong Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Zhiyuan Shi
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Haobo Han
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| | - Quanshun Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- School of Life Sciences
- Jilin University
- Changchun 130012
- China
| |
Collapse
|
2
|
Wonder E, Simón-Gracia L, Scodeller P, Majzoub RN, Kotamraju VR, Ewert KK, Teesalu T, Safinya CR. Competition of charge-mediated and specific binding by peptide-tagged cationic liposome-DNA nanoparticles in vitro and in vivo. Biomaterials 2018; 166:52-63. [PMID: 29544111 PMCID: PMC5944340 DOI: 10.1016/j.biomaterials.2018.02.052] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/14/2018] [Accepted: 02/27/2018] [Indexed: 12/31/2022]
Abstract
Cationic liposome-nucleic acid (CL-NA) complexes, which form spontaneously, are a highly modular gene delivery system. These complexes can be sterically stabilized via PEGylation [PEG: poly (ethylene glycol)] into nanoparticles (NPs) and targeted to specific tissues and cell types via the conjugation of an affinity ligand. However, there are currently no guidelines on how to effectively navigate the large space of compositional parameters that modulate the specific and nonspecific binding interactions of peptide-targeted NPs with cells. Such guidelines are desirable to accelerate the optimization of formulations with novel peptides. Using PEG-lipids functionalized with a library of prototypical tumor-homing peptides, we varied the peptide density and other parameters (binding motif, peptide charge, CL/DNA charge ratio) to study their effect on the binding and uptake of the corresponding NPs. We used flow cytometry to quantitatively assess binding as well as internalization of NPs by cultured cancer cells. Surprisingly, full peptide coverage resulted in less binding and internalization than intermediate coverage, with the optimum coverage varying between cell lines. In, addition, our data revealed that great care must be taken to prevent nonspecific electrostatic interactions from interfering with the desired specific binding and internalization. Importantly, such considerations must take into account the charge of the peptide ligand as well as the membrane charge density and the CL/DNA charge ratio. To test our guidelines, we evaluated the in vivo tumor selectivity of selected NP formulations in a mouse model of peritoneally disseminated human gastric cancer. Intraperitoneally administered peptide-tagged CL-DNA NPs showed tumor binding, minimal accumulation in healthy control tissues, and preferential penetration of smaller tumor nodules, a highly clinically relevant target known to drive recurrence of the peritoneal cancer.
Collapse
Affiliation(s)
- Emily Wonder
- Materials, Physics, and Molecular, Cellular, & Developmental Biology Departments, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
| | - Lorena Simón-Gracia
- Laboratory of Cancer Biology, Institute of Biomedicine and Translational Medicine, Centre of Excellence for Translational Medicine, University of Tartu, Ravila 14b, 50411 Tartu, Estonia
| | - Pablo Scodeller
- Laboratory of Cancer Biology, Institute of Biomedicine and Translational Medicine, Centre of Excellence for Translational Medicine, University of Tartu, Ravila 14b, 50411 Tartu, Estonia; Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Ramsey N Majzoub
- Materials, Physics, and Molecular, Cellular, & Developmental Biology Departments, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
| | - Venkata Ramana Kotamraju
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - Kai K Ewert
- Materials, Physics, and Molecular, Cellular, & Developmental Biology Departments, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
| | - Tambet Teesalu
- Materials, Physics, and Molecular, Cellular, & Developmental Biology Departments, University of California at Santa Barbara, Santa Barbara, CA 93106, USA; Laboratory of Cancer Biology, Institute of Biomedicine and Translational Medicine, Centre of Excellence for Translational Medicine, University of Tartu, Ravila 14b, 50411 Tartu, Estonia; Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.
| | - Cyrus R Safinya
- Materials, Physics, and Molecular, Cellular, & Developmental Biology Departments, University of California at Santa Barbara, Santa Barbara, CA 93106, USA.
| |
Collapse
|
3
|
Mohapatra S, Saha A, Mondal P, Jana B, Ghosh S, Biswas A, Ghosh S. Synergistic Anticancer Effect of Peptide-Docetaxel Nanoassembly Targeted to Tubulin: Toward Development of Dual Warhead Containing Nanomedicine. Adv Healthc Mater 2017; 6. [PMID: 27782376 DOI: 10.1002/adhm.201600718] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/12/2016] [Indexed: 01/09/2023]
Abstract
Microtubule dynamics play a crucial role in cancer cell division. Various drugs are developed to target microtubule. Although a few of them show potential in treatment of cancer, but success rate is limited due to their poor bioavailability and lack of specificity. Thus, development of highly bioavailable and target specific anticancer drug is extremely necessary. To address these key issues, here, a combination of approaches such as development of a dodecapeptide-docetaxel nanoassembly targeted to tubulin and MUC1 (mucin 1, cell surface associated glycoprotein) targeting oligonucleotide aptamer conjugated liposome for delivering peptide-docetaxel nanoassembly into the breast cancer cell have been demonstrated. These studies reveal that the peptide forms nanoassembly and entraps docetaxel drug. Further, the liposomal formulation of peptide-docetaxel exerts synergistic anticancer effect, activates key mitotic check point proteins, and inhibits bipolar spindle formation, metastatic cancer cell migration, and growth of tumor mimicking 3D multicellular spheroid.
Collapse
Affiliation(s)
- Saswat Mohapatra
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Indian Institute of Chemical Biology Campus; 4, Raja S. C. Mullick Road Kolkata 700 032 West Bengal India
| | - Abhijit Saha
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
| | - Prasenjit Mondal
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Indian Institute of Chemical Biology Campus; 4, Raja S. C. Mullick Road Kolkata 700 032 West Bengal India
| | - Batakrishna Jana
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
| | - Subhajit Ghosh
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
| | - Atanu Biswas
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
| | - Surajit Ghosh
- Organic and Medicinal Chemistry Division; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB); 4, Raja S. C. Mullick Road, Jadavpur Kolkata 700032 West Bengal India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-Indian Institute of Chemical Biology Campus; 4, Raja S. C. Mullick Road Kolkata 700 032 West Bengal India
| |
Collapse
|
4
|
Majzoub RN, Wonder E, Ewert KK, Kotamraju VR, Teesalu T, Safinya CR. Rab11 and Lysotracker Markers Reveal Correlation between Endosomal Pathways and Transfection Efficiency of Surface-Functionalized Cationic Liposome-DNA Nanoparticles. J Phys Chem B 2016; 120:6439-53. [PMID: 27203598 PMCID: PMC4936928 DOI: 10.1021/acs.jpcb.6b04441] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cationic liposomes (CLs) are widely studied as carriers of DNA and short-interfering RNA for gene delivery and silencing, and related clinical trials are ongoing. Optimization of transfection efficiency (TE) requires understanding of CL-nucleic acid nanoparticle (NP) interactions with cells, NP endosomal pathways, endosomal escape, and events leading to release of active nucleic acid from the lipid carrier. Here, we studied endosomal pathways and TE of surface-functionalized CL-DNA NPs in PC-3 prostate cancer cells displaying overexpressed integrin and neuropilin-1 receptors. The NPs contained RGD-PEG-lipid or RPARPAR-PEG-lipid, targeting integrin, and neuropilin-1 receptors, respectively, or control PEG-lipid. Fluorescence colocalization using Rab11-GFP and Lysotracker enabled simultaneous colocalization of NPs with recycling endosome (Rab11) and late endosome/lysosome (Rab7/Lysotracker) pathways at increasing mole fractions of pentavalent MVL5 (+5 e) at low (10 mol %), high (50 mol %), and very high (70 mol %) membrane charge density (σM). For these cationic NPs (lipid/DNA molar charge ratio, ρchg = 5), the influence of membrane charge density on pathway selection and transfection efficiency is similar for both peptide-PEG NPs, although, quantitatively, the effect is larger for RGD-PEG compared to RPARPAR-PEG NPs. At low σM, peptide-PEG NPs show preference for the recycling endosome over the late endosome/lysosome pathway. Increases in σM, from low to high, lead to decreases in colocalization with recycling endosomes and simultaneous increases in colocalization with the late endosome/lysosome pathway. Combining colocalization and functional TE data at low and high σM shows that higher TE correlates with a larger fraction of NPs colocalized with the late endosome/lysosome pathway while lower TE correlates with a larger fraction of NPs colocalized with the Rab11 recycling pathway. The findings lead to a hypothesis that increases in σM, leading to enhanced late endosome/lysosome pathway selection and higher TE, result from increased nonspecific electrostatic attractions between NPs and endosome luminal membranes, and conversely, enhanced recycling pathway for NPs and lower TE are due to weaker attractions. Surprisingly, at very high σM, the inverse relation between the two pathways observed at low and high σM breaks down, pointing to a more complex NP pathway behavior.
Collapse
Affiliation(s)
- Ramsey N. Majzoub
- Physics Department, Materials Department, and Molecular, Cellular and Developmental Biology Department, University of California, Santa Barbara, California 93106, United States of America
| | - Emily Wonder
- Physics Department, Materials Department, and Molecular, Cellular and Developmental Biology Department, University of California, Santa Barbara, California 93106, United States of America
| | - Kai K. Ewert
- Physics Department, Materials Department, and Molecular, Cellular and Developmental Biology Department, University of California, Santa Barbara, California 93106, United States of America
| | - Venkata Ramana Kotamraju
- Cancer Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States of America
| | - Tambet Teesalu
- Cancer Research Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California 92037, United States of America
- Center for Nanomedicine and Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, California 93106, United States of America
- Laboratory of Cancer Biology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia
| | - Cyrus R. Safinya
- Physics Department, Materials Department, and Molecular, Cellular and Developmental Biology Department, University of California, Santa Barbara, California 93106, United States of America
| |
Collapse
|
5
|
Jana B, Mohapatra S, Mondal P, Barman S, Pradhan K, Saha A, Ghosh S. α-Cyclodextrin Interacts Close to Vinblastine Site of Tubulin and Delivers Curcumin Preferentially to the Tubulin Surface of Cancer Cell. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13793-13803. [PMID: 27228201 DOI: 10.1021/acsami.6b03474] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tubulin is the key cytoskeleton component, which plays a crucial role in eukaryotic cell division. Many anticancer drugs have been developed targeting the tubulin surface. Recently, it has been shown that few polyhydroxy carbohydrates perturb tubulin polymerization. Cyclodextrin (CD), a polyhydroxy carbohydrate, has been extensively used as the delivery vehicle for delivery of hydrophobic drugs to the cancer cell. However, interaction of CD with intracellular components has not been addressed before. In this Article, we have shown for the first time that α-CD interacts with tubulin close to the vinblastine site using molecular docking and Förster resonance energy transfer (FRET) experiment. In addition, we have shown that α-CD binds with intracellular tubulin/microtubule. It delivers a high amount of curcumin onto the cancer cell, which causes severe disruption of intracellular microtubules. Finally, we have shown that the inclusion complex of α-CD and curcumin (CCC) preferentially enters into the human lung cancer cell (A549) as compared to the normal lung fibroblast cell (WI38), causes apoptotic death, activates tumor suppressor protein (p53) and cyclin-dependent kinase inhibitor 1 (p21), and inhibits 3D spheroid growth of cancer cell.
Collapse
Affiliation(s)
- Batakrishna Jana
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Saswat Mohapatra
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Prasenjit Mondal
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Surajit Barman
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Krishnangsu Pradhan
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Abhijit Saha
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, and ‡Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology , 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| |
Collapse
|
6
|
Shi H, Xiao L, Duan W, He H, Ma L, Da M, Duan Y, Wang Q, Wu H, Song X, Hou Y. ANXA2 enhances the progression of hepatocellular carcinoma via remodeling the cell motility associated structures. Micron 2016; 85:26-33. [PMID: 27060670 DOI: 10.1016/j.micron.2016.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 12/22/2022]
Abstract
Hepatocellular carcinoma (HCC) ranks as the fifth most common malignancy worldwide. The detailed mechanism of signal regulation for HCC progression is still not known, and the high motility of cancer cells is known as a core property for cancer progression maintenance. Annexin A2 (ANXA2), a calcium-dependent phospholipids binding protein is highly expressed in HCC. To study the roles the excessively expressed ANXA2 during the progression of HCC, we inhibited the ANXA2 expression in SMMC-7721 cells using RNAi, followed by the analysis of cell growth, apoptosis and cell motility. To explore the relationship between the cell behaviors and its structures, the microstructure changes were observed under fluorescence microscopy, laser scanning confocal microscopy and electron microscopy. Our findings demonstrated that down-regulation of ANXA2 results in decreased the cell proliferation and motility, enhanced apoptosis, suppressed cell pseudopodia/filopodia, inhibited expression of F-actin and β-tubulin, and inhibited or depolymerized Lamin B. The cell contact inhibition was also analyzed in the paper. Take together, our results indicate that ANXA2 plays an important role to enhance the malignant behaviors of HCC cells, and the enhancement is closely based on its remodeling to cell structures.
Collapse
Affiliation(s)
- Hongyan Shi
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Li Xiao
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Wei Duan
- School of Medicine, Deakin University, Waurn Ponds, VIC 3216, Australia
| | - Huimin He
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Lele Ma
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Miaomiao Da
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Yan Duan
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Qian Wang
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Huayi Wu
- The High School Affiliated to Shaanxi Normal University, Xi'an, Shaanxi 710061, China
| | - Xigui Song
- The High School Affiliated to Shaanxi Normal University, Xi'an, Shaanxi 710061, China
| | - Yingchun Hou
- Co-Innovation Center for Qinba Region's Sustainable Development, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
| |
Collapse
|
7
|
Adak A, Mohapatra S, Mondal P, Jana B, Ghosh S. Design of a novel microtubule targeted peptide vesicle for delivering different anticancer drugs. Chem Commun (Camb) 2016; 52:7549-52. [DOI: 10.1039/c6cc01769j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel microtubule targeted peptide vesicle has been designed and developed for delivering both hydrophilic and hydrophobic drugs. It delivers both the drugs close to their intracellular targets, shows significant anticancer effect in both 2D monolayer and 3D spheroid cells.
Collapse
Affiliation(s)
- Anindyasundar Adak
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Saswat Mohapatra
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Prasenjit Mondal
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Batakrishna Jana
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
- Academy of Scientific and Innovative Research (AcSIR)
| |
Collapse
|
8
|
Chattoraj S, Amin A, Jana B, Mohapatra S, Ghosh S, Bhattacharyya K. Selective Killing of Breast Cancer Cells by Doxorubicin-Loaded Fluorescent Gold Nanoclusters: Confocal Microscopy and FRET. Chemphyschem 2015; 17:253-9. [PMID: 26615975 DOI: 10.1002/cphc.201500982] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 11/26/2015] [Indexed: 12/22/2022]
Abstract
Fluorescent gold nanoclusters (AuNCs) capped with lysozymes are used to deliver the anticancer drug doxorubicin to cancer and noncancer cells. Doxorubicin-loaded AuNCs cause the highly selective and efficient killing (90 %) of breast cancer cells (MCF7) (IC50 =155 nm). In contrast, the killing of the noncancer breast cells (MCF10A) by doxorubicin-loaded AuNCs is only 40 % (IC50 =4500 nm). By using a confocal microscope, the fluorescence spectrum and decay of the AuNCs were recorded inside the cell. The fluorescence maxima (at ≈490-515 nm) and lifetime (≈2 ns), of the AuNCs inside the cells correspond to Au10-13 . The intracellular release of doxorubicin from AuNCs is monitored by Förster resonance energy transfer (FRET) imaging.
Collapse
Affiliation(s)
- Shyamtanu Chattoraj
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India), Fax
| | - Asif Amin
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India), Fax
| | - Batakrishna Jana
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India
| | - Saswat Mohapatra
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India.
| | - Kankan Bhattacharyya
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India), Fax.
| |
Collapse
|
9
|
Chattoraj S, Amin MA, Mohapatra S, Ghosh S, Bhattacharyya K. Cancer Cell Imaging Using in Situ Generated Gold Nanoclusters. Chemphyschem 2015; 17:61-8. [PMID: 26437799 DOI: 10.1002/cphc.201500731] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 12/26/2022]
Abstract
In situ generated fluorescent gold nanoclusters (Au-NCs) are used for bio-imaging of three human cancer cells, namely, lung (A549), breast (MCF7), and colon (HCT116), by confocal microscopy. The amount of Au-NCs in non-cancer cells (WI38 and MCF10A) is 20-40 times less than those in the corresponding cancer cells. The presence of a larger amount of glutathione (GSH) capped Au-NCs in the cancer cell is ascribed to a higher glutathione level in cancer cells. The Au-NCs exhibit fluorescence maxima at 490-530 nm inside the cancer cells. The fluorescence maxima and matrix-assisted laser desorption ionization (MALDI) mass spectrometry suggest that the fluorescent Au-NCs consist of GSH capped clusters with a core structure (Au8-13). Time-resolved confocal microscopy indicates a nanosecond (1-3 ns) lifetime of the Au-NCs inside the cells. This rules out the formation of aggregated Au-thiolate complexes, which typically exhibit microsecond (≈1000 ns) lifetimes. Fluorescence correlation spectroscopy (FCS) in live cells indicates that the size of the Au-NCs is ≈1-2 nm. For in situ generation, we used a conjugate consisting of a room-temperature ionic liquid (RTIL, [pmim][Br]) and HAuCl4. Cytotoxicity studies indicate that the conjugate, [pmim][AuCl4], is non-toxic for both cancer and non-cancer cells.
Collapse
Affiliation(s)
- Shyamtanu Chattoraj
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India
| | - Md Asif Amin
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India
| | - Saswat Mohapatra
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India
| | - Surajit Ghosh
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, 700 032, India.
| | - Kankan Bhattacharyya
- Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700 032, India.
| |
Collapse
|
10
|
Biswas A, Kurkute P, Saleem S, Jana B, Mohapatra S, Mondal P, Adak A, Ghosh S, Saha A, Bhunia D, Biswas SC, Ghosh S. Novel hexapeptide interacts with tubulin and microtubules, inhibits Aβ fibrillation, and shows significant neuroprotection. ACS Chem Neurosci 2015; 6:1309-16. [PMID: 26147391 DOI: 10.1021/acschemneuro.5b00149] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Herein, we report a novel hexapeptide, derived from activity dependent neuroprotective protein (ADNP), that spontaneously self-assembles to form antiparallel β-sheet structure and produces nanovesicles under physiological conditions. This peptide not only strongly binds with β-tubulin in the taxol binding site but also binds with the microtubule lattice in vitro as well as in intracellular microtubule networks. Interestingly, it shows inhibition of amyloid fibril formation upon co-incubation with Aβ peptide following an interesting mechanistic pathway and excellent neuroprotection in PC12 cells treated with anti-nerve growth factor (NGF). The potential of this hexapeptide opens up a new paradigm in design and development of novel therapeutics for AD.
Collapse
Affiliation(s)
- Atanu Biswas
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Prashant Kurkute
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Suraiya Saleem
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, West Bengal India
| | - Batakrishna Jana
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Saswat Mohapatra
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Prasenjit Mondal
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Anindyasundar Adak
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Subhajit Ghosh
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Abhijit Saha
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Debmalya Bhunia
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Subhash Chandra Biswas
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700 032, West Bengal India
| | - Surajit Ghosh
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Biology Campus, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| |
Collapse
|