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De K, Tanbir SKE, Sinha S, Mukhopadhyay S. Lipid-Based Nanocarrier by Targeting with LHRH Peptide: A Promising Approach for Prostate Cancer Radio-Imaging and Therapy. Mol Pharm 2024; 21:4128-4146. [PMID: 38920398 DOI: 10.1021/acs.molpharmaceut.4c00528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Prostate cancer is a prevalently detected malignancy with a dismal prognosis. Luteinizing-hormone-releasing-hormone (LHRH) receptors are overexpressed in such cancer cells, to which the LHRH-decapeptide can specifically bind. A lipid-polyethylene glycol-conjugated new LHRH-decapeptide analogue (D-P-HLH) was synthesized and characterized. D-P-HLH-coated and anticancer drug doxorubicin (DX)-loaded solid lipid nanoparticles (F-DX-SLN) were formulated by the cold homogenization technique and characterized by Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, differential scanning calorimetry, dynamic light scattering, electron microscopy, entrapment efficiency, and drug-release profile studies. F-DX-SLN allows site-specific DX delivery by reducing the side effects of chemotherapy. Cancer cells could precisely take up F-DX-SLN by targeting specific receptors, boosting the cytotoxicity at the tumor site. The efficacy of F-DX-SLN on PC3/SKBR3 cells by the MTT assay revealed that F-DX-SLN was more cytotoxic than DX and/or DX-SLN. Flow cytometry and confocal microscopic studies further support F-DX-SLNs' increased intracellular absorption capability in targeting LHRH overexpressed cancer cells. F-DX-SLN ensured high apoptotic potential, noticeably larger mitochondrial transmembrane depolarization action, as well as the activation of caspases, a longer half-life, and greater plasma concentration. F-DX-SLN/DX-SLN was radiolabeled with technetium-99m; scintigraphic imaging studies established its tumor selectivity in PC3 tumor-bearing nude mice. The efficacy of the formulations in cancer treatment, in vivo therapeutic efficacy tests, and histopathological studies were also conducted. Results clearly indicate that F-DX-SLN exhibits sustained and superior targeted administration of anticancer drugs, thus opening up the possibility of a drug delivery system with precise control and targeting effects. F-DX-SLN could also provide a nanotheranostic approach with improved efficacy for prostate cancer therapy.
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Affiliation(s)
- Kakali De
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - S K Eashayan Tanbir
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Samarendu Sinha
- Netaji Subhas Chandra Bose Cancer Hospital, 3081 Nayabad, Kolkata 700094, India
| | - Soma Mukhopadhyay
- Netaji Subhas Chandra Bose Cancer Hospital, 3081 Nayabad, Kolkata 700094, India
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2
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De K, Prasad P, Sinha S, Mukhopadhyay S, Roy SS. Synthesis, Characterization, and Biological Evaluation of Radiolabeled Glutamine Conjugated Polymeric Nanoparticles: A Simple Approach for Tumor Imaging. ACS APPLIED BIO MATERIALS 2023. [PMID: 37248067 DOI: 10.1021/acsabm.3c00048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Application of nanoradiopharmaceuticals for molecular imaging has gained worldwide importance for their multifaceted potentials focusing on providing a safe and cost-effective approach. Biodistribution studies on such species are capable of bringing nanomedicine to patients. Current therapeutically available labeling strategies suffer from different limitations, including off-target cytotoxicity and radiolabel release over time. Poly(lactic-co-glycolic acid)(PLGA) nanoparticles are biodegradable carriers for a variety of contrast agents that can be employed in medicine with high loading capacity for multimodal imaging agents. Here, glutamine-conjugated PLGA polymers were used to construct polymeric nanoparticles (G-PNP) similar to unconjugated PLGA nanoparticles (PNP)s formulated for ex vivo cell labeling and in vivo tumor scintigraphy studies. G-PNP/PNP, characterized by Fourier-transform infrared, atomic-force-microscopy, particle-size, and zeta-potential studies, were biocompatible as evaluated by MTT assay. G-PNPs were radiolabeled with 99mtechnetium (99mTc) by borohydrite reduction. G-PNPs demonstrated higher cellular uptake than PNPs, with no major cytotoxicity. Radiochemical purity indicated that 99mTc labeled G-PNP (99mTc-G-PNP) can form a stable complex with substantial stability in serum with respect to time. Imaging studies showed that 99mTc-G-PNP significantly accumulated at the C6 glioma cell induced tumor-site in rats. Thus, 99mTc-G-PNP demonstrated favorable characteristics and imaging potential which may make it a promising tumor imaging nanoprobe as a nanoradiopharmaceutical.
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Affiliation(s)
- Kakali De
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Parash Prasad
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Samarendu Sinha
- Netaji Subhas Chandra Bose Cancer Hospital, Kolkata 700 094, West Bengal, India
| | - Soma Mukhopadhyay
- Netaji Subhas Chandra Bose Cancer Hospital, Kolkata 700 094, West Bengal, India
| | - Sib Sankar Roy
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700032, India
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3
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De K. Decapeptide Modified Doxorubicin Loaded Solid Lipid Nanoparticles as Targeted Drug Delivery System against Prostate Cancer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13194-13207. [PMID: 34723562 DOI: 10.1021/acs.langmuir.1c01370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Growing instances of prostate cancer with poor prognosis have become a challenging task in cancer therapy. Luteinizing-hormone-releasing-hormone (LHRH) receptors are overexpressed in prostate cancer cells. Polyethylene glycol (PEG) conjugated lipids exhibit superiority in terms of retention/circulation in biological systems. PEGylated dipalmitoylphosphatedylethanolamine (DPPE-PEG), covalently linked with 6-hydrazinopyridine-3-carboxylic-acid, was conjugated with new LHRH-receptor positive peptide analog (DPPE-PEG-HYNIC-d-Glu-His-Trp-Ser-Tyr-d-Asn-Leu-d-Gln-Pro-Gly-NH2). Surface modified doxorubicin (DOX) loaded solid lipid nanoparticle (SLN) was prepared using soylecithin, stearic acid and Poloxamer-188 by solvent emulsification/evaporation method for targeted delivery of DOX into prostate cancer cells. SLN, DOX loaded SLN (DSLN) and surface modified DSLN (M-DSLN) were characterized by means of their size, zeta potential, morphology, storage time, drug payload, and subsequent release kinetics studies. Homogeneity of surface morphology, upon modification of SLN, was revealed from the dynamic light scattering, atomic force microscopy, and scanning electron microscopic studies. Homogeneous adsolubilization of DOX throughout the hydrophobic moiety of SLN was established by the differential scanning calorimetric studies. Release of DOX were sustained in DSLN and M-DSLN. Cellular uptake and in vitro activities of formulations against LHRH positive PC3/SKBR3 cancer cell lines revealed higher cellular internalization, cytotoxicity that followed the sequence DOX < DSLN < M-DSLN. Dye staining and flow cytometry studies revealed higher apoptosis in cancer cells. Such receptor specific drug delivery systems are considered to have substantial potential in prostate cancer therapy.
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Affiliation(s)
- Kakali De
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, West Bengal India
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Sen R, Ganguly S, Ganguly S, Debnath MC, Chakraborty S, Mukherjee B, Chattopadhyay D. Apigenin-Loaded PLGA-DMSA Nanoparticles: A Novel Strategy to Treat Melanoma Lung Metastasis. Mol Pharm 2021; 18:1920-1938. [PMID: 33780261 DOI: 10.1021/acs.molpharmaceut.0c00977] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The flavone apigenin (APG), alone as well as in combination with other chemotherapeutic agents, is known to exhibit potential anticancer effects in various tumors and inhibit growth and metastasis of melanoma. However, the potential of apigenin nanoparticles (APG-NPs) to prevent lung colonization of malignant melanoma has not been well investigated. APG-loaded PLGA-NPs were surface-functionalized with meso-2,3-dimercaptosuccinic acid (DMSA) for the treatment of melanoma lung metastasis. DMSA-conjugated APG-loaded NPs (DMSA-APG-NPs) administered by an oral route exhibited sustained APG release and showed considerable enhancement of plasma half-life, Cmax value, and bioavailability compared to APG-NPs both in plasma and the lungs. DMSA-conjugated APG-NPs showed comparably higher cellular internalization in B16F10 and A549 cell lines compared to that of plain NPs. Increased cytotoxicity was observed for DMSA-APG-NPs compared to APG-NPs in A549 cells. This difference between the two formulations was lower in B16F10 cells. Significant depolarization of mitochondrial transmembrane potential and an enhanced level of caspase activity were observed in B16F10 cells treated with DMSA-APG-NPs compared to APG-NPs as well. Western blot analysis of various proteins was performed to understand the mechanism of apoptosis as well as prevention of melanoma cell migration and invasion. DMSA conjugation substantially increased accumulation of DMSA-APG-NPs given by an intravenous route in the lungs compared to APG-NPs at 6 and 8 h. This was also corroborated by scintigraphic imaging studies with radiolabeled formulations administered by an intravenous route. Conjugation also allowed comparatively higher penetration as evident from an in vitro three-dimensional tumor spheroid model study. Finally, the potential therapeutic efficacy of the formulation was established in experimental B16F10 lung metastases, which suggested an improved bioavailability with enhanced antitumor and antimetastasis efficacy of DMSA-conjugated APG-NPs following oral administration.
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Affiliation(s)
- Ramkrishna Sen
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India.,Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Soumya Ganguly
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Shantanu Ganguly
- Regional Radiation Medicine Center, Thakurpukur Cancer Center and Welfare Home Campus, Kolkata 700063, India
| | - Mita Chatterjee Debnath
- Infectious Diseases and Immunology Division, CSIR-Indian Institute of Chemical Biology, Kolkata 700032, India
| | - Subrata Chakraborty
- Department of Pathology, Mata Gujri Memorial Medical College, Kishanganj 855107, India
| | - Biswajit Mukherjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Dipankar Chattopadhyay
- Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, Kolkata 700009, India
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Kaihani S, Sadeghzadeh N. Study of the 99m Tc-labeling conditions of 6-hydrazinonicotinamide-conjugated peptides from a new perspective: Introduction to the term radio-stoichiometry. J Labelled Comp Radiopharm 2020; 63:582-596. [PMID: 32997359 DOI: 10.1002/jlcr.3883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/27/2020] [Accepted: 09/20/2020] [Indexed: 11/07/2022]
Abstract
Specific tumor uptake of peptide radiopharmaceuticals depends on tumor binding affinity and their radiochemical purity. Several important parameters that influence the 99m Tc-labeling and consequently the radiochemical purity of 6-hydrazinonicotinamide (HYNIC)-conjugated peptide are radionuclide activity, the amount of peptide, the amount of coligands, and the amount of reducing agents (stannous ion). In this review article, we have attempted studying these parameters in the HYNIC-conjugated peptides (somatostatin, cholecystokinin/gastrin, bombesin, and RGD analogs) from a new perspective to obtain most used and optimized radio-stoichiometric relationships. One of the most important results in this review is that for 99m Tc-labeling of HYNIC-conjugated peptides, it is better to consider the most calculated mole ratio between technetium-99m and the peptide (mole ratio of technetium-99m to the peptide 1:200-400). The statistical results also show that among these 99m Tc-labeled peptides, the most used and favorable coligand is tricine/EDDA with two to one (2:1) mole ratio. These optimized radio-stoichiometric relationships, favorable coligand mole ratio, and applicable radiolabeling points can greatly improve the labeling process of the HYNIC-conjugated peptides, by reducing trial and error, increasing specific activity, and saving materials.
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Affiliation(s)
- Sajad Kaihani
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
- Student Research Committee, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Nourollah Sadeghzadeh
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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Ahmadpour S, Hosseinimehr SJ. Recent developments in peptide-based SPECT radiopharmaceuticals for breast tumor targeting. Life Sci 2019; 239:116870. [DOI: 10.1016/j.lfs.2019.116870] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 12/31/2022]
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7
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Banerjee I, De M, Dey G, Bharti R, Chattopadhyay S, Ali N, Chakrabarti P, Reis RL, Kundu SC, Mandal M. A peptide-modified solid lipid nanoparticle formulation of paclitaxel modulates immunity and outperforms dacarbazine in a murine melanoma model. Biomater Sci 2019; 7:1161-1178. [PMID: 30652182 DOI: 10.1039/c8bm01403e] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Melanoma is a highly aggressive skin cancer. A paclitaxel formulation of solid lipid nanoparticles modified with Tyr-3-octreotide (PSM) is employed to treat melanoma that highly expresses somatostatin receptors (SSTRs). PSM exerts more apoptotic and anti-invasive effects in B16F10 mice melanoma cells as compared to dacarbazine (DTIC), an approved chemotherapeutic drug for treating aggressive melanoma. Besides, PSM induces one of the biomarkers of immunogenic cell death in vitro and in vivo as confirmed by calreticulin exposure on the B16F10 cell surface. We observed a significant number of CD8 positive T cells in the tumor bed of the PSM treated group. As a result, PSM effectively reduces tumor volume in vivo as compared to DTIC. PSM also induces a favorable systemic immune response as determined in the spleen and sera of the treated animals. Importantly, PSM can reduce the number of nodule formations in the experimental lung metastasis model. Our experimentations indicate that the metronomic PSM exhibits remarkable anti-melanoma activities without any observable toxicity. This immune modulation behavior of PSM can be exploited for the therapy of melanoma and probably for other malignancies.
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Affiliation(s)
- Indranil Banerjee
- Division of Infectious Diseases and Immunology, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S C Mullick Road, Kolkata - 700032, West Bengal, India.
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8
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De K, Mukherjee D, Sinha S, Ganguly S. HYNIC and DOMA conjugated radiolabeled bombesin analogs as receptor-targeted probes for scintigraphic detection of breast tumor. EJNMMI Res 2019; 9:25. [PMID: 30887136 PMCID: PMC6423188 DOI: 10.1186/s13550-019-0493-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 02/21/2019] [Indexed: 12/21/2022] Open
Abstract
Background Among the many peptide receptor systems, gastrin-releasing-peptide (GRP) receptors, the mammalian equivalent of bombesin (BN) receptors, are potential targets for diagnosis and therapy of breast tumors due to their overexpression in various frequently occurring human cancers. The aim of this study was to synthesize and comparative evaluation of 99mTc-labeled new BN peptide analogs. Four new BN analogs, HYNIC-Asp[PheNle]BN(7-14)NH2, BN1; HYNIC-Pro-Asp[TyrMet]BN(7-14)NH2, BN2; HYNIC-Asp-Asn[Lys-CHAla-Nle]BN(7-14)NH2, BN3; and DOMA-GABA[Pro-Tyr-Nle]BN(7-14)NH2, BN4 were synthesized and biologically evaluated for targeted imaging of GRP receptor-positive breast-tumors. Methods Solid-phase synthesis using Fmoc-chemistry was adopted for the synthesis of peptides. BN1–BN4 analogs were better over the standard Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2 (BNS). Lipophilicity, serum stability, internalization, and binding affinity studies were carried out using 99mTc-labeled analogs. Biodistribution and imaging analyses were performed on MDA-MB-231 cell-induced tumor-bearing mice. BN-analogs induced angiogenesis; tumor formation and GRP-receptor-expression were confirmed by histology and immunohistochemistry analyses of tumor sections and important tissue sections. Results All the analogs displayed ≥ 97% purity after the HPLC purification. BN-peptide-conjugates exhibited high serum stability and significant binding affinity to GRP-positive tumor; rapid internalization/externalization in/from MDA-MB-231 cells were noticed for the BN analogs. BN4 and BN3 exhibited higher binding affinity, stability than BN1 and BN2. Highly specific in vivo uptakes to the tumor were clearly visualized by scintigraphy; rapid excretion from non-target tissues via kidneys suggests a higher tumor-to-background ratio. BN4, among all the analogs, stimulates the expression of angiogenic markers to a maximum. Conclusion Considering its most improved pharmacological characteristics, BN4 is thus considered as most promising probes for early non-invasive diagnosis of GRP receptor-positive breast tumors. Electronic supplementary material The online version of this article (10.1186/s13550-019-0493-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kakali De
- Infectious Diseases and Immunology Division (Nuclear Medicine Laboratory), CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata, West Bengal, 700032, India.
| | - Dibyanti Mukherjee
- Infectious Diseases and Immunology Division (Nuclear Medicine Laboratory), CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata, West Bengal, 700032, India
| | - Samarendu Sinha
- Regional Radiation Medicine Center, Thakurpukur Cancer Research Center and Welfare Home Campus, Kolkata, West Bengal, 700 060, India
| | - Shantanu Ganguly
- Regional Radiation Medicine Center, Thakurpukur Cancer Research Center and Welfare Home Campus, Kolkata, West Bengal, 700 060, India
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Rezazadeh F, Sadeghzadeh N. Tumor targeting with 99m Tc radiolabeled peptides: Clinical application and recent development. Chem Biol Drug Des 2018; 93:205-221. [PMID: 30299570 DOI: 10.1111/cbdd.13413] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/19/2018] [Accepted: 09/23/2018] [Indexed: 01/16/2023]
Abstract
Targeting overexpressed receptors on the cancer cells with radiolabeled peptides has become very important in nuclear oncology in the recent years. Peptides are small and have easy preparation and easy radiolabeling protocol with no side-effect and toxicity. These properties made them a valuable tool for tumor targeting. Based on the successful imaging of neuroendocrine tumors with 111 In-octreotide, other receptor-targeting peptides such as bombesin (BBN), cholecystokinin/gastrin analogues, neurotensin analogues, glucagon-like peptide-1, and RGD peptides are currently under development or undergoing clinical trials. The most frequently used radionuclides for tumor imaging are 99m Tc and 111 In for single-photon emission computed tomography and 68 Ga and 18 F for positron emission tomography imaging. This review presents some of the 99m Tc-labeled peptides, with regard to their potential for radionuclide imaging of tumors in clinical and preclinical application.
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Affiliation(s)
- Farzaneh Rezazadeh
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran.,Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Nourollah Sadeghzadeh
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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Chen T, Song X, Gong T, Fu Y, Yang L, Zhang Z, Gong T. nRGD modified lycobetaine and octreotide combination delivery system to overcome multiple barriers and enhance anti-glioma efficacy. Colloids Surf B Biointerfaces 2017; 156:330-339. [PMID: 28544965 DOI: 10.1016/j.colsurfb.2017.05.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 05/02/2017] [Accepted: 05/13/2017] [Indexed: 12/17/2022]
Abstract
For glioma as one of the most common and lethal primary brain tumors, the presence of BBB, BBTB, vasculogenic mimicry (VM) channels and tumor-associated macrophages (TAMs) are key biological barriers. Here, a novel drug delivery system which could efficiently deliver drugs to glioma by overcoming multi-barriers and increase antitumor efficacy through multi-therapeutic mechanisms was well developed. In this study, a multi-target peptide nRGD was used to transport across the BBB, mediate tumor penetration and target TAMs. Lycobetaine (LBT) was adopted to kill glioma cells and octreotide (OCT) was co-delivered to inhibit VM channels and prevent angiogenesis. LBT-OCT liposomes (LPs) showed controlled release profile in vitro, increased uptake efficiency, improved inhibitory effect against glioma cells and VM formation, and enhanced BBB-crossing capability. The median survival time of glioma-bearing mice administered with LBT-OCT LPs-nRGD was significantly longer than LBT-OCT LPs (P<0.01). Besides, nRGD achieved a stronger inhibitory effect against tumor associated macrophages (TAMs) compared to LPs-iRGD treatment groups in vivo. Thus, LPs-nRGD represented a promising versatile delivery platform for combination drug therapy in glioma treatment.
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Affiliation(s)
- Tijia Chen
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Xu Song
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Ting Gong
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Yao Fu
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Liuqing Yang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Zhirong Zhang
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China
| | - Tao Gong
- Key Laboratory of Drug Targeting and Drug Delivery Systems, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu 610041, PR China.
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De K, Banerjee I, Sinha S, Ganguly S. Synthesis and exploration of novel radiolabeled bombesin peptides for targeting receptor positive tumor. Peptides 2017; 89:17-34. [PMID: 28088445 DOI: 10.1016/j.peptides.2017.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/16/2016] [Accepted: 01/04/2017] [Indexed: 11/19/2022]
Abstract
Increasing evidence of peptide receptor overexpression in various cancer cells, warrant the development of receptor specific radiolabeled peptides for molecular imaging and therapy in nuclear medicine. Gastrin-releasing-peptide (GRP) receptor, are overexpressed in a variety of human cancer cells. The present study report the synthesis and biological evaluation of new bombesin (BBN) analogs, HYNIC-Asp-[Phe13]BBN(7-13)-NH-CH2-CH2-CH3:BA1, HYNIC-Pro-[Tyr13Met14]BBN(7-14)NH2:BA2 as prospective tumor imaging agent with compare to BBN(7-14)NH2:BS as standard. The pharmacophores were radiolabeled in high yields with 99mTc, characterized for their stability in serum and saline, cysteine/histidine and were found to be substantially stable. Internalization/externalization and receptor binding studies were assessed using MDA-MB-231 cells and showed high receptor binding-affinity and favourable internalization. Fluorescence studies revealed that BA1 changed the morphology of the cells and could localize in the nucleus more effectively than BA2/BS. Cell-viability studies displayed substantial antagonistic and nuclear-internalization effect of BA1. BA1 also exhibited antiproliferative effect on MDA-MB-231 cell by inducing apoptosis. In vivo behaviour of the radiopeptides was evaluated in GRP receptor positive tumor bearing mice. The 99mTc-BA1/99mTc-BA2 demonstrated rapid blood/urinary clearance through the renal pathway and comparatively more significant tumor uptake image and favourable tumor-to-non-target ratios provided by 99mTc-BA1. The specificity of the in vivo uptake was confirmed by co-injection with BS. Moreover, 99mTc-BA1 provided a much clearer tumor image in scintigraphic studies than others. Thus the combination of favourable in vitro and in vivo properties renders BA1 as more potential antagonist bombesin-peptide for targeting GRP-receptor positive tumor. These properties are encouraging to carry out further experiments for non-invasive receptor targeting potential diagnostinc and therapeutic agent for tumors.
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Affiliation(s)
- Kakali De
- Infectious Diseases and Immunology Division (Nuclear Medicine Laboratory), CSIR-Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, Kolkata, 700032, West Bengal, India.
| | - Indranil Banerjee
- Infectious Diseases and Immunology Division (Nuclear Medicine Laboratory), CSIR-Indian Institute of Chemical Biology, 4 Raja S C Mullick Road, Kolkata, 700032, West Bengal, India
| | - Samarendu Sinha
- Regional Radiation Medicine Center, Thakurpukur Cancer Center and Welfare Home Campus, Kolkata, 700 063, India
| | - Shantanu Ganguly
- Regional Radiation Medicine Center, Thakurpukur Cancer Center and Welfare Home Campus, Kolkata, 700 063, India
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Banerjee I, De K, Mukherjee D, Dey G, Chattopadhyay S, Mukherjee M, Mandal M, Bandyopadhyay AK, Gupta A, Ganguly S, Misra M. Paclitaxel-loaded solid lipid nanoparticles modified with Tyr-3-octreotide for enhanced anti-angiogenic and anti-glioma therapy. Acta Biomater 2016; 38:69-81. [PMID: 27109765 DOI: 10.1016/j.actbio.2016.04.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/05/2016] [Accepted: 04/18/2016] [Indexed: 11/19/2022]
Abstract
UNLABELLED Somatostatin receptors (SSTRs) especially subtype 2 (SSTR2) are overexpressed in glioma. By taking advantage of the specific expression of SSTR2 on both glioma neovasculature endothelial cells and glioma cells, we constructed Tyr-3-octreotide (TOC)-modified solid lipid nanoparticles (SLN) loaded with paclitaxel (PTX) to enable tumor neovasculature and tumor cells dual-targeting chemotherapy. In this work, a TOC-polyethylene glycol-lipid (TOC-PEG-lipid) was successfully synthesized and used as a targeting molecule to enhance anticancer efficacy of PTX loaded sterically stabilized lipid nanoparticles. The prepared PTX-loaded SLN modified with TOC (PSM) was characterized by standard methods. In rat C6 glioma cells, PSM improved PTX induced apoptosis. Both tube formation assay and CD31 staining of treated orthotopic glioma tissues confirmed that PSM significantly improved the antiangiogenic ability of PTX in vitro and in vivo, respectively. Radiolabelled PSM achieved a much higher and specific accumulation within the glioma as suggested by the biodistribution and imaging studies. Furthermore, PSM exhibited improved anti-glioma efficacy over unmodified nanoparticles and Taxol in both subcutaneous and orthotopic tumor models. These findings collectively indicate that PSM holds great potential in improving the efficacy of anti-glioma therapy. STATEMENT OF SIGNIFICANCE Somatostatin receptors (SSTRs) especially subtype 2 (SSTR2) are overexpressed in various mammalian cancer cells. Proliferating endothelial cells of neovasculature also express SSTR2. Tyr-3-octreotide (TOC) is a known ligand for SSTR2. We have successfully prepared paclitaxel-loaded solid lipid nanoparticles modified with TOC (PSM) having diameter less than 100nm. We found that PSM improved anti-cancer efficacy of paclitaxel in SSTR2 positive glioma of rats. This improved anti-glioma efficiency of PSM can be attributed to dual-targeting (i.e. tumor cell and neovasculature targeting) efficiency of PSM and promoted anti-cancer drug accumulation at tumor site due to TOC modification of solid lipid nanoparticles. This particular study aims at widening the scope of octreotide-derivative modified nanocarrier by exploring dual-targeting potential of PSM.
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Affiliation(s)
- Indranil Banerjee
- Department of Infectious Diseases and Immunology (Nuclear Medicine Division), CSIR-IICB, 4 Raja S C Mullick Road, Kolkata 700032, India.
| | - Kakali De
- Department of Infectious Diseases and Immunology (Nuclear Medicine Division), CSIR-IICB, 4 Raja S C Mullick Road, Kolkata 700032, India
| | - Dibyanti Mukherjee
- Department of Infectious Diseases and Immunology (Nuclear Medicine Division), CSIR-IICB, 4 Raja S C Mullick Road, Kolkata 700032, India
| | - Goutam Dey
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Sankha Chattopadhyay
- Radiopharmaceuticals Laboratory, Regional Centre, Board of Radiation and Isotope Technology, Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata 700064, India
| | | | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Amal Kumar Bandyopadhyay
- Division of Pharmaceutics, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Amit Gupta
- Regional Radiation Medicine Centre, Thakurpukur Cancer Research Centre, Kolkata 700063, India
| | - Santanu Ganguly
- Regional Radiation Medicine Centre, Thakurpukur Cancer Research Centre, Kolkata 700063, India
| | - Mridula Misra
- Department of Infectious Diseases and Immunology (Nuclear Medicine Division), CSIR-IICB, 4 Raja S C Mullick Road, Kolkata 700032, India.
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Motaleb MA, Adli ASA, El-Tawoosy M, Sanad MH, AbdAllah M. An easy and effective method for synthesis and radiolabelling of risedronate as a model for bone imaging. J Labelled Comp Radiopharm 2016; 59:157-63. [DOI: 10.1002/jlcr.3384] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 01/27/2016] [Accepted: 02/05/2016] [Indexed: 11/07/2022]
Affiliation(s)
- M. A. Motaleb
- Labeled Compounds Department, Hot Laboratories Center; Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - A. S. A. Adli
- Labeled Compounds Department, Hot Laboratories Center; Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - M. El-Tawoosy
- Labeled Compounds Department, Hot Laboratories Center; Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - M. H. Sanad
- Labeled Compounds Department, Hot Laboratories Center; Atomic Energy Authority; P.O. Box 13759 Cairo Egypt
| | - M. AbdAllah
- Faculty of Science, Department of Chemistry; Zagazig University; Zagazig Egypt
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Somatostatin Receptors in an Anaplastic Oligodendroglioma Relapse Evidenced By 68Ga DOTANOC PET/CT. Clin Nucl Med 2016; 40:e363-5. [PMID: 26018682 DOI: 10.1097/rlu.0000000000000816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Six years ago, a right frontal lobe anaplastic oligodendroglioma negative for AE1/AE3 and HBM-45, positive for 1p/19q deletion, EMA, GFAP, and synaptophysin was excised from a 50-year-old woman. Treatments that followed were radiation therapy, and surgery plus radiation therapy and temozolomide for a relapse with an early partial response, followed by disease progression. In the middle of last year, ⁶⁸Ga-DOTANOC PET/CT was carried out to evaluate the possibility of treatment with peptide receptor radionuclide therapy. The examination revealed a grossly round-shaped uptake corresponding to the surgical wall, with some smaller uptakes disseminated in different parts of the brain.
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15
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Bhowmik A, Khan R, Ghosh MK. Blood brain barrier: a challenge for effectual therapy of brain tumors. BIOMED RESEARCH INTERNATIONAL 2015; 2015:320941. [PMID: 25866775 PMCID: PMC4383356 DOI: 10.1155/2015/320941] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 10/27/2014] [Accepted: 11/04/2014] [Indexed: 01/01/2023]
Abstract
Brain tumors are one of the most formidable diseases of mankind. They have only a fair to poor prognosis and high relapse rate. One of the major causes of extreme difficulty in brain tumor treatment is the presence of blood brain barrier (BBB). BBB comprises different molecular components and transport systems, which in turn create efflux machinery or hindrance for the entry of several drugs in brain. Thus, along with the conventional techniques, successful modification of drug delivery and novel therapeutic strategies are needed to overcome this obstacle for treatment of brain tumors. In this review, we have elucidated some critical insights into the composition and function of BBB and along with it we have discussed the effective methods for delivery of drugs to the brain and therapeutic strategies overcoming the barrier.
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Affiliation(s)
- Arijit Bhowmik
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Rajni Khan
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
| | - Mrinal Kanti Ghosh
- Signal Transduction in Cancer and Stem Cells Laboratory, Division of Cancer Biology and Inflammatory Disorder, Council of Scientific and Industrial Research-Indian Institute of Chemical Biology (CSIR-IICB), 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700 032, India
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16
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Radiolabeled new somatostatin analogs conjugated to DOMA chelator used as targeted tumor imaging agent: synthesis and radiobiological evaluation. Amino Acids 2015; 47:1135-53. [PMID: 25743164 DOI: 10.1007/s00726-015-1942-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 02/14/2015] [Indexed: 10/23/2022]
Abstract
Several receptor-specific radiopeptides have been developed and effective in the diagnosis of malignant diseases. Among them, somatostatin receptor (SSTR) scintigraphy with (111)In-DTPA-octreotide has become a tumor diagnostic radiopharmaceutical in nuclear medicine. However, it suffers some drawbacks concerning the imaging properties and elevated radiation burden of (111)In. Here, we report the synthesis of radiolabeled two new octapeptides with improved uptake in SSTR2-positive tumors in comparison with (99m)Tc-HYNIC-Tyr(3)-octreotide (HYNIC-TOC). Octapeptides were synthesized in high yield by Fmoc solid-phase synthesis and coupling the macrocyclic chelator DOMA(1,4,7-Tri-Boc-10-(carboxymethyl)-1,4,7,10-tetraazocyclododecane-1-yl-monoacetic acid) to these peptides for (99m)Tc labeling. New peptides DOMA-Asn(3)-octreotate(DOMA-AATE) and DOMA-Pro(3)-octreotate(DOMA-PATE) were purified, characterized by RP-HPLC, MALDI-mass, (1)H-NMR, (13)C-NMR. Labeling was performed by SnCl2 method to get products with excellent radiochemical purity (97 %). Radiopeptides were found to be substantially stable under physiological condition for 24 h. Internalization and receptor-binding studies were determined in somatostatin receptor-expressing C6-glioma cell line and rat brain cortex membrane and the results compared with HYNIC-TOC as standard. The IC50 values of (99m)Tc-DOMA-AATE(1.10 ± 0.48 nM) and (99m)Tc-DOMA-PATE(1.76 ± 0.06 nM) showed high affinity binding for SSTR2 receptor and they internalized rapidly in C6 cells. Biodistribution and imaging studies were performed in C6 tumor-bearing rat under gamma camera showing significant uptake in kidney, urine and C6 tumor. Radiopeptides exhibited fast blood clearance and rapid elimination through the urinary systems. However, (99m)Tc-DOMA-AATE exhibited the highest tumor to muscle and tumor to blood uptake ratios among three. These favorable characteristics validate (99m)Tc-DOMA-AATE as a more promising (99m)Tc-radiotracer than (99m)Tc-DOMA-PATE, (99m)Tc-HYNIC-TOC for SSTR2-positive tumor scintigraphy.
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Lesma G, Cecchi R, Cagnotto A, Gobbi M, Meneghetti F, Musolino M, Sacchetti A, Silvani A. Tetrahydro-β-carboline-based spirocyclic lactam as type II' β-turn: application to the synthesis and biological evaluation of somatostatine mimetics. J Org Chem 2013; 78:2600-10. [PMID: 23409740 DOI: 10.1021/jo302737j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The synthesis of novel spirocyclic lactams, embodying D-tryptophan (Trp) amino acid as the central core and acting as peptidomimetics, is presented. It relies on the strategic combination of Seebach's self-reproduction of chirality chemistry and Pictet-Spengler condensation as key steps. Investigation of the conformational behavior by molecular modeling, X-ray crystallography, and NMR and IR spectroscopies suggests very stable and highly predictable type II' β-turn conformations for all compounds. Relying on this feature, we also pursued their application to two potential mimetics of the hormone somatostatin, a pharmaceutically relevant natural peptide, which contains a Trp-based type II' β-turn pharmacophore.
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Affiliation(s)
- Giordano Lesma
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi 19, 20133 Milano, Italy
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