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Kwak MH, Yang SM, Yun SK, Kim S, Choi MG, Park JM. Identification and validation of LGR5-binding peptide for molecular imaging of gastric cancer. Biochem Biophys Res Commun 2021; 580:93-99. [PMID: 34628260 DOI: 10.1016/j.bbrc.2021.09.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/28/2021] [Indexed: 12/27/2022]
Abstract
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) is a stem cell marker in gastric cancer. In this study, we aimed to produce the LGR5-targeting peptide probe for the use of molecular imaging for gastric cancer. We used phage display libraries to produce a LGR5-specific peptide probe. This peptide was validated for targeting gastric cancer with in vitro and in vivo studies. This peptide was tagged with fluorescein isothiocyanate (FITC) and cyanine 5.5 (Cy5.5). We used two normal and three gastric cancer cell lines. Immunocytochemistry (ICC) and fluorescence-activated cell sorting (FACS) analysis were used to validate the target specificity of the peptide. After three rounds of bio-panning, we found a novel 7-mer peptides, IPQILSI (IPQ∗). FITC-conjugated IPQ∗ showed 2 to 10 times higher fluorescence in gastric cancer cells vs. control cells in ICC. This discrimination was consistently observed using Cy5.5-conjugated IPQ∗ in ICC. FACS analysis showed right shift of peak point in gastric cancers compared to the control cells. In the peritoneal metastasis animal model, we could find Cy5.5-conjugated IPQ∗ accumulated specifically to gastric tumors. In conclusion, IPQ∗ peptide showed a specific probe for gastric cancer diagnosis. This probe can be applied to theragnosis for gastric cancer diagnosis including peritoneal metastasis.
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Affiliation(s)
- Moon Hwa Kwak
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Medical Life Sciences, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seung Mok Yang
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seul Ki Yun
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Medical Life Sciences, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sol Kim
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Myung-Gyu Choi
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jae Myung Park
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
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2
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De Ravin E, Phan HAT, Harmsen S, Cho SS, Teng CW, Petersson EJ, White C, Galban EM, Hess R, Lee JYK. Somatostatin Receptor as a Molecular Imaging Target in Human and Canine Cushing Disease. World Neurosurg 2021; 149:94-102. [PMID: 33601082 DOI: 10.1016/j.wneu.2021.02.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Fluorescence-guided surgery may improve completeness of resection in transsphenoidal surgery for Cushing disease (CD) by enabling visualization of residual tumor tissue at the margins. In this review we discuss somatostatin receptors (SSTRs) as targets for fluorescence-guided surgery and overview existing SSTR-specific imaging agents. We also compare SSTR expression in normal pituitary and corticotrophinoma tissues from human and canine CD patients to assess canines as a translational model for CD. METHODS A PubMed literature search was conducted for publications containing the terms canine, somatostatin receptor, Cushing's disease, and corticotroph adenoma. SSTR expression data from each study was documented as the presence or absence of expression or, when possible, the number of tumors expressing a given SSTR subtype within a group of tumors being studied. Studies that used reverse transcription polymerase chain reaction to quantify SSTR expression were selected for additional comparative analysis. RESULTS SSTR5 is strongly expressed in human corticotroph adenomas and weakly expressed in surrounding pituitary parenchyma, a pattern not conclusively observed in canine patients. SSTR2 mRNA expression is similar in human normal pituitary and corticotrophinoma cells but may be significantly higher in canine normal pituitary tissue than in corticotroph tumoral tissue. Limited data were available on SSTR subtypes 1, 3, and 4. CONCLUSIONS Further studies must fill the knowledge gaps related to species-specific SSTR expression, so using canine CD as a translational model may be premature. We do conclude that the expression profile of SSTR5 (i.e., high local expression in pituitary adenomas relative to normal surrounding tissues) makes SSTR5 a promising molecular target for FGS.
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Affiliation(s)
- Emma De Ravin
- Department of Neurosurgery at the Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Hoang Anh T Phan
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Stefan Harmsen
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Steve S Cho
- Department of Neurosurgery at the Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Clare W Teng
- Department of Neurosurgery at the Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA; Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - E James Petersson
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Caitlin White
- Department of Endocrinology at the Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Evelyn M Galban
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Rebecka Hess
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John Y K Lee
- Department of Neurosurgery at the Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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3
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Kwak MH, Yi G, Yang SM, Choe Y, Choi S, Lee HS, Kim E, Lim YB, Na K, Choi MG, Koo H, Park JM. A Dodecapeptide Selected by Phage Display as a Potential Theranostic Probe for Colon Cancers. Transl Oncol 2020; 13:100798. [PMID: 32454443 PMCID: PMC7248426 DOI: 10.1016/j.tranon.2020.100798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 12/23/2022] Open
Abstract
Aim Colon cancer is one of the leading causes of cancer-related mortality. However, specific biomarkers for its diagnosis or treatment are not established well. Methods We developed a colon-cancer specific peptide probe using phage display libraries. We validated the specificity of this probe to colon cancer cells with immunohistochemical staining and FACS analysis using one normal cell and five colon cancer cell lines. Results This peptide probe maintained binding affinity even after serum incubation. For therapeutic applications, this peptide probe was conjugated to hematoporphyrin, a photosensitizer, which showed a significantly enhanced cellular uptake and high photodynamic effect to kill tumor cells. As another application, we made a nanoparticle modified from the peptide probe. It efficiently delivered SN-38, an anticancer drug, into tumor cells, and its tumor-targeting ability was observed in vivo after intravenous injection to the same xenograft model. Conclusion The noble dodecapeptide probe can be a promising candidate for both colon tumor diagnosis and targeted drug delivery.
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Affiliation(s)
- Moon Hwa Kwak
- Catholic Photomedicine Research Institute, The Catholic University of Korea, Seoul, Republic of Korea
| | - Gawon Yi
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Mok Yang
- Catholic Photomedicine Research Institute, The Catholic University of Korea, Seoul, Republic of Korea
| | - Younghee Choe
- Catholic Photomedicine Research Institute, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sangkee Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Hye-Soo Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul, Republic of Korea
| | - Eunha Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Yong-Beom Lim
- Department of Materials Science and Engineering, Yonsei University, Seoul, Republic of Korea
| | - Kun Na
- Department of Biotechnology, The Catholic University of Korea, Seoul, Republic of Korea
| | - Myung-Gyu Choi
- Catholic Photomedicine Research Institute, The Catholic University of Korea, Seoul, Republic of Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Heebeom Koo
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Jae Myung Park
- Catholic Photomedicine Research Institute, The Catholic University of Korea, Seoul, Republic of Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
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Joshi BP, Wang TD. Targeted Optical Imaging Agents in Cancer: Focus on Clinical Applications. CONTRAST MEDIA & MOLECULAR IMAGING 2018; 2018:2015237. [PMID: 30224903 PMCID: PMC6129851 DOI: 10.1155/2018/2015237] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 05/27/2018] [Accepted: 07/04/2018] [Indexed: 12/13/2022]
Abstract
Molecular imaging is an emerging strategy for in vivo visualization of cancer over time based on biological mechanisms of disease activity. Optical imaging methods offer a number of advantages for real-time cancer detection, particularly in the epithelium of hollow organs and ducts, by using a broad spectral range of light that spans from visible to near-infrared. Targeted ligands are being developed for improved molecular specificity. These platforms include small molecule, peptide, affibody, activatable probes, lectin, and antibody. Fluorescence labeling is used to provide high image contrast. This emerging methodology is clinically useful for early cancer detection by identifying and localizing suspicious lesions that may not otherwise be seen and serves as a guide for tissue biopsy and surgical resection. Visualizing molecular expression patterns may also be useful to determine the best choice of therapy and to monitor efficacy. A number of these imaging agents are overcoming key challenges for clinical translation and are being validated in vivo for a wide range of human cancers.
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Affiliation(s)
- Bishnu P. Joshi
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, University of Michigan, 109 Zina Pitcher Place, BSRB 1722, Ann Arbor, MI 48109, USA
| | - Thomas D. Wang
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, University of Michigan, 109 Zina Pitcher Place, BSRB 1722, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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5
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Ragozin E, Hesin A, Bazylevich A, Tuchinsky H, Bovina A, Shekhter Zahavi T, Oron-Herman M, Kostenich G, Firer M, Rubinek T, Wolf I, Luboshits G, Sherman M, Gellerman G. New somatostatin-drug conjugates for effective targeting pancreatic cancer. Bioorg Med Chem 2018; 26:3825-3836. [DOI: 10.1016/j.bmc.2018.06.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/14/2018] [Accepted: 06/24/2018] [Indexed: 12/15/2022]
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6
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Isago H, Fujita H, Sugimori T. Amphoteric phosphorous(V)-phthalocyanines as proton-driven switchable fluorescers toward deep-tissue bio-imaging. J Inorg Biochem 2018; 180:222-229. [PMID: 29290391 DOI: 10.1016/j.jinorgbio.2017.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 12/11/2017] [Accepted: 12/20/2017] [Indexed: 12/01/2022]
Abstract
Spectral (optical absorption and emission) properties of three amphoteric phosphorous(V)-phthalocyanine derivatives, [P(Pc)(O)OH], where Pc=tetra(tert-butyl)phthalocyaninate (tbpc), tetrakis(2',6'-dimethylphenoxy)phthalocyaninate (tppc), and octakis(4'-tert-butylphenoxy)phthalocyaninate (obppc), have been investigated in ethanolic solutions. Spectral changes upon protonation/deprotonation (the reaction sites have been determined to be their axial ligands by magnetic circular dichroism study) are drastic and rapid. All the initial ([P(Pc)(O)OH]), protonated ([P(Pc)(OH)2]+), and deprotonated ([P(Pc)(O)2]-) species are possessed with sufficient brightness (defined as the product of their molar extinction coefficient, ε (inM-1cm-1), and fluorescence quantum yield, ΦF) in bio-imaging window (650-900nm). For example, spectral characteristics of the tbpc derivatives have been determined as follows: ε=1.65×105 (absorption maximum 676nm) and ΦF=0.80 (emission maximum 686nm) for [P(tbpc)(O)(OH)] while ε=1.45×105 (697nm) and ΦF=0.27 (714nm) for [P(tbpc)(OH)2]+, and ε=2.25×105 (662nm) and ΦF=0.90 (667nm) for [P(tbpc)(O)2]-. Emission of tppc and obppc derivatives behave in essentially the same manner irrespective of nature of the peripheral substituents and hence ΦF values are greater with increasing emission peak wavenumbers in line with the "energy gap law". These characteristics make these compounds promising candidates as chemical probes for deep-tissue bio-imaging.
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Affiliation(s)
- Hiroaki Isago
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan.
| | - Harumi Fujita
- National Institute for Materials Science, 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Tamotsu Sugimori
- Graduate School of Medicine and Pharmaceutical Sciences, Univ. of Toyama, 2630, Sugitani, Toyama 930-0194, Japan
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7
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In vivo magnetic resonance imaging of pancreatic tumors using iron oxide nanoworms targeted with PTR86 peptide. Colloids Surf B Biointerfaces 2017; 158:423-430. [DOI: 10.1016/j.colsurfb.2017.06.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/28/2017] [Accepted: 06/30/2017] [Indexed: 01/17/2023]
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8
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Rayappan K, Murugan C, Sundarraj S, Lara RP, Kannan S. Peptide-Conjugated Nano-Drug Delivery System to Improve Synergistic Molecular Chemotherapy for Colon Carcinoma. ChemistrySelect 2017. [DOI: 10.1002/slct.201701153] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kathirvel Rayappan
- Division of Cancer Nanomedicine; Department of Zoology; Periyar University; Salem - 636 011, Tamil Nadu INDIA
| | - Chandran Murugan
- Division of Cancer Nanomedicine; Department of Zoology; Periyar University; Salem - 636 011, Tamil Nadu INDIA
| | - Shenbagamoorthy Sundarraj
- Division of Cancer Nanomedicine; Department of Zoology; Periyar University; Salem - 636 011, Tamil Nadu INDIA
- PG and Research Department of Zoology, Ayya Nadar Janaki Ammal College; Sivakasi - 626124, Tamil Nadu, INDIA
| | | | - Soundarapandian Kannan
- Division of Cancer Nanomedicine; Department of Zoology; Periyar University; Salem - 636 011, Tamil Nadu INDIA
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9
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Benito AB, Aiertza MK, Marradi M, Gil-Iceta L, Shekhter Zahavi T, Szczupak B, Jiménez-González M, Reese T, Scanziani E, Passoni L, Matteoli M, De Maglie M, Orenstein A, Oron-Herman M, Kostenich G, Buzhansky L, Gazit E, Grande HJ, Gómez-Vallejo V, Llop J, Loinaz I. Functional Single-Chain Polymer Nanoparticles: Targeting and Imaging Pancreatic Tumors in Vivo. Biomacromolecules 2016; 17:3213-3221. [PMID: 27608431 DOI: 10.1021/acs.biomac.6b00941] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The development of tools for the early diagnosis of pancreatic adenocarcinoma is an urgent need in order to increase treatment success rate and reduce patient mortality. Here, we present a modular nanosystem platform integrating soft nanoparticles with a targeting peptide and an active imaging agent for diagnostics. Biocompatible single-chain polymer nanoparticles (SCPNs) based on poly(methacrylic acid) were prepared and functionalized with the somatostatin analogue PTR86 as the targeting moiety, since somatostatin receptors are overexpressed in pancreatic cancer. The gamma emitter 67Ga was incorporated by chelation and allowed in vivo investigation of the pharmacokinetic properties of the nanoparticles using single photon emission computerized tomography (SPECT). The resulting engineered nanosystem was tested in a xenograph mouse model of human pancreatic adenocarcinoma. Imaging results demonstrate that accumulation of targeted SCPNs in the tumor is higher than that observed for nontargeted nanoparticles due to improved retention in this tissue.
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Affiliation(s)
- Ana B Benito
- IK4-CIDETEC, P° Miramón 196, 20014 Donostia-San Sebastián, Spain
| | - Miren K Aiertza
- IK4-CIDETEC, P° Miramón 196, 20014 Donostia-San Sebastián, Spain
| | - Marco Marradi
- IK4-CIDETEC, P° Miramón 196, 20014 Donostia-San Sebastián, Spain
| | | | - Talia Shekhter Zahavi
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University , Ramat Aviv, Tel Aviv 69978, Israel
| | | | | | - Torsten Reese
- CIC biomaGUNE, P° Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Eugenio Scanziani
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano , Via Celoria 10, 20133, Milan, Italy
| | - Lorena Passoni
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy
| | | | - Marcella De Maglie
- Fondazione Filarete, Viale Ortles 22/4, 20139 Milano, Italy
- Dipartimento di Medicina Veterinaria, Università degli Studi di Milano , Via Celoria 10, 20133, Milan, Italy
| | - Arie Orenstein
- The Advanced Technologies Center, Sheba Medical Center , Tel Hashomer 52621, Israel
| | - Mor Oron-Herman
- The Advanced Technologies Center, Sheba Medical Center , Tel Hashomer 52621, Israel
| | - Gennady Kostenich
- The Advanced Technologies Center, Sheba Medical Center , Tel Hashomer 52621, Israel
| | - Ludmila Buzhansky
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University , Ramat Aviv, Tel Aviv 69978, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University , Ramat Aviv, Tel Aviv 69978, Israel
| | | | | | - Jordi Llop
- CIC biomaGUNE, P° Miramón 182, 20014 Donostia-San Sebastián, Spain
| | - Iraida Loinaz
- IK4-CIDETEC, P° Miramón 196, 20014 Donostia-San Sebastián, Spain
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10
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Gilad Y, Firer M, Gellerman G. Recent Innovations in Peptide Based Targeted Drug Delivery to Cancer Cells. Biomedicines 2016; 4:E11. [PMID: 28536378 PMCID: PMC5344250 DOI: 10.3390/biomedicines4020011] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/16/2016] [Accepted: 05/23/2016] [Indexed: 12/21/2022] Open
Abstract
Targeted delivery of chemotherapeutics and diagnostic agents conjugated to carrier ligands has made significant progress in recent years, both in regards to the structural design of the conjugates and their biological effectiveness. The goal of targeting specific cell surface receptors through structural compatibility has encouraged the use of peptides as highly specific carriers as short peptides are usually non-antigenic, are structurally simple and synthetically diverse. Recent years have seen many developments in the field of peptide based drug conjugates (PDCs), particularly for cancer therapy, as their use aims to bypass off-target side-effects, reducing the morbidity common to conventional chemotherapy. However, no PDCs have as yet obtained regulatory approval. In this review, we describe the evolution of the peptide-based strategy for targeted delivery of chemotherapeutics and discuss recent innovations in the arena that should lead in the near future to their clinical application.
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Affiliation(s)
- Yosi Gilad
- Department of Chemical Sciences, Ariel University, Ariel 40700, Israel.
- Department of Chemical Engineering and Biotechnology, Ariel University, Ariel 40700, Israel.
| | - Michael Firer
- Department of Chemical Engineering and Biotechnology, Ariel University, Ariel 40700, Israel.
| | - Gary Gellerman
- Department of Chemical Sciences, Ariel University, Ariel 40700, Israel.
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11
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Redko B, Ragozin E, Andreii B, Helena T, Amnon A, Talia SZ, Mor OH, Genady K, Gary G. Synthesis, drug release, and biological evaluation of new anticancer drug-bioconjugates containing somatostatin backbone cyclic analog as a targeting moiety. Biopolymers 2015; 104:743-52. [DOI: 10.1002/bip.22694] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/12/2015] [Accepted: 05/27/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Boris Redko
- Department of Biological Chemistry; Ariel University; Ariel 40700 Israel
- Department of Chemistry; The Julius Spokojny Bioorganic Chemistry Laboratory; Bar Ilan University; Ramat Gan 52900 Israel
| | - Elena Ragozin
- Department of Biological Chemistry; Ariel University; Ariel 40700 Israel
| | - Bazylevich Andreii
- Department of Biological Chemistry; Ariel University; Ariel 40700 Israel
| | - Tuchinsky Helena
- Department of Molecular Biology; Ariel University; Ariel 40700 Israel
| | - Albeck Amnon
- Department of Chemistry; The Julius Spokojny Bioorganic Chemistry Laboratory; Bar Ilan University; Ramat Gan 52900 Israel
| | - Shekhter Zahavi Talia
- Department of Molecular Microbiology and Biotechnology; George S. Wise Faculty of Life Sciences; Tel-Aviv University; Tel-Aviv 69978 Israel
| | - Oron-Herman Mor
- The Advanced Technologies Center; Sheba Medical Center; Tel Hashomer 52621 Israel
| | - Kostenich Genady
- The Advanced Technologies Center; Sheba Medical Center; Tel Hashomer 52621 Israel
| | - Gellerman Gary
- Department of Biological Chemistry; Ariel University; Ariel 40700 Israel
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12
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Kamarulzaman EE, Mohd Gazzali A, Acherar S, Frochot C, Barberi-Heyob M, Boura C, Chaimbault P, Sibille E, Wahab HA, Vanderesse R. New Peptide-Conjugated Chlorin-Type Photosensitizer Targeting Neuropilin-1 for Anti-Vascular Targeted Photodynamic Therapy. Int J Mol Sci 2015; 16:24059-80. [PMID: 26473840 PMCID: PMC4632738 DOI: 10.3390/ijms161024059] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/10/2015] [Accepted: 09/23/2015] [Indexed: 01/04/2023] Open
Abstract
Photodynamic therapy (PDT) is a cancer treatment modality that requires three components, namely light, dioxygen and a photosensitizing agent. After light excitation, the photosensitizer (PS) in its excited state transfers its energy to oxygen, which leads to photooxidation reactions. In order to improve the selectivity of the treatment, research has focused on the design of PS covalently attached to a tumor-targeting moiety. In this paper, we describe the synthesis and the physico-chemical and photophysical properties of six new peptide-conjugated photosensitizers designed for targeting the neuropilin-1 (NRP-1) receptor. We chose a TPC (5-(4-carboxyphenyl)-10,15, 20-triphenyl chlorine as photosensitizer, coupled via three different spacers (aminohexanoic acid, 1-amino-3,6-dioxaoctanoic acid, and 1-amino-9-aza-3,6,12,15-tetraoxa-10-on-heptadecanoic acid) to two different peptides (DKPPR and TKPRR). The affinity towards the NRP-1 receptor of the conjugated chlorins was evaluated along with in vitro and in vivo stability levels. The tissue concentration of the TPC-conjugates in animal model shows good distribution, especially for the DKPPR conjugates. The novel peptide-PS conjugates proposed in this study were proven to have potential to be further developed as future NRP-1 targeting photodynamic therapy agent.
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Affiliation(s)
- Ezatul Ezleen Kamarulzaman
- LCPM UMR 7375, CNRS, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France; E-Mails: (E.E.K.); (A.M.G.); (S.A.)
- LCPM, UMR 7375, Université de Lorraine, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; E-Mail:
| | - Amirah Mohd Gazzali
- LCPM UMR 7375, CNRS, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France; E-Mails: (E.E.K.); (A.M.G.); (S.A.)
- LCPM, UMR 7375, Université de Lorraine, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; E-Mail:
| | - Samir Acherar
- LCPM UMR 7375, CNRS, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France; E-Mails: (E.E.K.); (A.M.G.); (S.A.)
- LCPM, UMR 7375, Université de Lorraine, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France
| | - Céline Frochot
- LRGP, UMR 7274, CNRS, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France; E-Mail:
- LRGP, UMR 7274, Université de Lorraine, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy cedex, France
| | - Muriel Barberi-Heyob
- CRAN, UMR 7039, Université de Lorraine, Campus Sciences, BP 70239-54506 Vandœuvre Cedex, France; E-Mails: (M.B.-H.); (C.B.)
- CRAN, UMR 7039, CNRS, Campus Sciences, BP 70239-54506 Vandœuvre Cedex, France
| | - Cédric Boura
- CRAN, UMR 7039, Université de Lorraine, Campus Sciences, BP 70239-54506 Vandœuvre Cedex, France; E-Mails: (M.B.-H.); (C.B.)
- CRAN, UMR 7039, CNRS, Campus Sciences, BP 70239-54506 Vandœuvre Cedex, France
| | - Patrick Chaimbault
- SRSMC, UMR 7565 ICPM, Université de Lorraine, 1 boulevard Arago, 57078 Metz Cedex 3, France; E-Mail:
- SRSMC, UMR 7565 ICPM, CNRS, 1 boulevard Arago, 57078 Metz Cedex 3, France
| | - Estelle Sibille
- LCP-A2MC, EA 4632, ICPM, 1 boulevard Arago, 57078 Metz Cedex 3, France; E-Mail:
| | - Habibah A. Wahab
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; E-Mail:
| | - Régis Vanderesse
- LCPM UMR 7375, CNRS, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France; E-Mails: (E.E.K.); (A.M.G.); (S.A.)
- LCPM, UMR 7375, Université de Lorraine, ENSIC, 1 rue Grandville, BP 20451-54001 Nancy Cedex, France
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +33-(0)383-175-204; Fax: +33-(0)383-379-977
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13
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Development of a high-throughput screening-compatible assay to identify inhibitors of the CK2α/CK2β interaction. Anal Biochem 2015; 468:4-14. [DOI: 10.1016/j.ab.2014.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/22/2014] [Accepted: 09/05/2014] [Indexed: 01/10/2023]
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14
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Gilad Y, Firer MA, Rozovsky A, Ragozin E, Redko B, Albeck A, Gellerman G. "Switch off/switch on" regulation of drug cytotoxicity by conjugation to a cell targeting peptide. Eur J Med Chem 2014; 85:139-46. [PMID: 25084142 DOI: 10.1016/j.ejmech.2014.07.073] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/19/2014] [Accepted: 07/21/2014] [Indexed: 11/17/2022]
Abstract
Bi-nuclear amino acid platforms loaded with various drugs for conjugation to a peptide carrier were synthesized using simple and convenient orthogonally protective solid-phase organic synthesis (SPOS). Each arm of the platform carries a different anticancer agent linked through the same or different functional group, providing discrete chemo- and bio-release profiles for each drug, and also enabling "switch off/switch on" regulation of drug cytotoxicity by conjugation to the platform and to a cell targeting peptide. The versatility of this approach enables efficient production of drug-loaded platforms and determination of favorable drug combinations/modes of linkage for subsequent conjugation to a carrier moiety for targeted cancer cell therapy. The results presented here potentiate the application of amino acid platforms for targeted drug delivery (TDD).
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Affiliation(s)
- Yossi Gilad
- Department of Biological Chemistry, Ariel University, Ariel, 40700, Israel; The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan, 52900, Israel
| | - Michael A Firer
- Department of Chemical Engineering, Ariel University, Ariel, 40700, Israel
| | - Alex Rozovsky
- Department of Biological Chemistry, Ariel University, Ariel, 40700, Israel; The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan, 52900, Israel
| | - Elena Ragozin
- Department of Biological Chemistry, Ariel University, Ariel, 40700, Israel
| | - Boris Redko
- Department of Biological Chemistry, Ariel University, Ariel, 40700, Israel; The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan, 52900, Israel
| | - Amnon Albeck
- The Julius Spokojny Bioorganic Chemistry Laboratory, Department of Chemistry, Bar Ilan University, Ramat Gan, 52900, Israel
| | - Gary Gellerman
- Department of Biological Chemistry, Ariel University, Ariel, 40700, Israel.
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15
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Sreenivasan VKA, Kim EJ, Goodchild AK, Connor M, Zvyagin AV. Targeting somatostatin receptors using in situ-bioconjugated fluorescent nanoparticles. Nanomedicine (Lond) 2012; 7:1551-60. [DOI: 10.2217/nnm.12.42] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Aim: The author’s group report, for the first time, on the development of a quantum dot (QD)-based fluorescent somatostatin (somatotropin release-inhibiting factor [SRIF]) probe that enables specific targeting of somatostatin receptors. Receptor-mediated endocytosis of SRIF was imaged using this probe. Materials & methods: Biotinylated SRIF-analog (SRIF-B) and streptavidin (Sav)-coated QDs were used for the probe synthesis. A dye-labeled streptavidin complex was used to evaluate the effect of Sav binding on the activity of SRIF-B. Results: A preconjugated probe of the form SRIF-B:Sav-QD, was inactive and unable to undergo receptor-mediated endocytosis. An alternative in situ bioconjugation strategy, where SRIF-B and Sav-QD were added in two consecutive steps, enabled visualization of the receptor-mediated endocytosis. The process of Sav binding appeared to be responsible for the inactivity in the first case. Conclusion: The in situ two-step bioconjugation strategy allowed QDs to be targeted to somatostatin receptors. This strategy should enable flexible fluorescent tagging of SRIF for the investigation of molecular trafficking in cells and targeted delivery in live animals. Original submitted 14 November 2011; Revised submitted 27 February 2012; Published online 20 July 2012
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Affiliation(s)
| | - Eun J Kim
- Department of Science Education – Chemical Education Major, Daegu University, Gyeonbuk, Republic of Korea
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16
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Sreenivasan VKA, Stremovskiy OA, Kelf TA, Heblinski M, Goodchild AK, Connor M, Deyev SM, Zvyagin AV. Pharmacological characterization of a recombinant, fluorescent somatostatin receptor agonist. Bioconjug Chem 2011; 22:1768-75. [PMID: 21823634 DOI: 10.1021/bc200104u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Somatostatin (SST) is a peptide neurotransmitter/hormone found in several mammalian tissue types. Apart from its natural importance, labeled SST/analogues are utilized in clinical applications such as targeting/diagnosis of neuroendocrine tumors. We report on the development and characterization of a novel, recombinant, fluorescent somatostatin analogue that has potential to elucidate somatostatin-activated cell signaling. SST was genetically fused with a monomeric-red fluorescent protein (mRFP) as the fluorescent label. The attachment of SST to mRFP had no detectable effect on its fluorescent properties. This analogue's potency to activate the endogenous and transfected somatostatin receptors was characterized using assays of membrane potential and Ca(2+) mobilization and immunocytochemistry. SST-mRFP was found to be an effective somatostatin receptor agonist, able to trigger the membrane hyperpolarization, mobilization of the intracellular Ca(2+) and receptor-ligand internalization in cells expressing somatostatin receptors. This complex represents a novel optical reporter due to its red emission spectral band suitable for in vivo imaging and tracking of the somatostatin receptor signaling pathways, affording higher resolution and sensitivity than those of the state-of-the-art radiolabeling bioassays.
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17
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Morosini V, Bastogne T, Frochot C, Schneider R, François A, Guillemin F, Barberi-Heyob M. Quantum dot–folic acid conjugates as potential photosensitizers in photodynamic therapy of cancer. Photochem Photobiol Sci 2011; 10:842-51. [DOI: 10.1039/c0pp00380h] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Lee S, Xie J, Chen X. Peptides and peptide hormones for molecular imaging and disease diagnosis. Chem Rev 2010; 110:3087-111. [PMID: 20225899 DOI: 10.1021/cr900361p] [Citation(s) in RCA: 253] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Seulki Lee
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, 31 Center Drive, Suite 1C14, Bethesda, Maryland 20892-2281, USA
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19
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Joshi BP, Wang TD. Exogenous Molecular Probes for Targeted Imaging in Cancer: Focus on Multi-modal Imaging. Cancers (Basel) 2010; 2:1251-87. [PMID: 22180839 PMCID: PMC3237638 DOI: 10.3390/cancers2021251] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Revised: 05/31/2010] [Accepted: 06/02/2010] [Indexed: 01/09/2023] Open
Abstract
Cancer is one of the major causes of mortality and morbidity in our health care system. Molecular imaging is an emerging methodology for the early detection of cancer, and the development of exogenous molecular probes that can be labeled for multi-modality imaging is critical to this process. Today, molecular imaging is at crossroad, and new targeted imaging agents are expected to broadly expand our ability to detect pre-malignant lesions. This integrated imaging strategy will permit clinicians to not only localize lesions within the body, but also to visualize the expression and activity of specific molecules. This information is expected to have a major impact on diagnosis, therapy, drug development and understanding of basic cancer biology. At this time, a number of molecular probes have been developed by conjugating various labels to affinity ligands for targeting in different imaging modalities. This review will describe the current status of exogenous molecular probes for optical, nuclear and MRI imaging platforms. Furthermore, we will also shed light on how these techniques can be used synergistically in multi-modal platforms and how these techniques are being employed in current research.
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Affiliation(s)
- Bishnu P. Joshi
- Division of Gastroenterology, Department of Medicine, University of Michigan, School of Medicine, 109 Zina Pitcher Place, BSRB 1722, Ann Arbor, MI 48109, USA
| | - Thomas D. Wang
- Division of Gastroenterology, Department of Medicine, University of Michigan, School of Medicine, 109 Zina Pitcher Place, BSRB 1722, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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Abstract
Targeted molecular imaging techniques have become indispensable tools in modern diagnostics because they provide accurate and specific diagnosis of disease information. Conventional nonspecific contrast agents suffer from low targeting efficiency; thus, the use of molecularly targeted imaging probes is needed depending on different imaging modalities. Although recent technologies have yielded various strategies for designing smart probes, utilization of peptide-based probes has been most successful. Phage display technology and combinatorial peptide chemistry have profoundly impacted the pool of available targeting peptides for the efficient and specific delivery of imaging labels. To date, selected peptides that target a variety of disease-related receptors and biomarkers are in place. These targeting peptides can be coupled with the appropriate imaging moieties or nanoplatforms on demand with the help of sophisticated bioconjugation or radiolabeling techniques. This review article examines the current trends in peptide-based imaging probes developed for in vivo applications. We discuss the advantage of and challenges in developing peptide-based probes and summarize current systems with respect to their unique design strategies and applications.
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Affiliation(s)
- Seulki Lee
- Laboratory for Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, 31 Center Drive, Suite 1C14, Bethesda, Maryland 20892-2281, USA
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21
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Thomas N, Pernot M, Vanderesse R, Becuwe P, Kamarulzaman E, Da Silva D, François A, Frochot C, Guillemin F, Barberi-Heyob M. Photodynamic therapy targeting neuropilin-1: Interest of pseudopeptides with improved stability properties. Biochem Pharmacol 2010; 80:226-35. [PMID: 20380812 DOI: 10.1016/j.bcp.2010.03.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 03/29/2010] [Accepted: 03/31/2010] [Indexed: 12/24/2022]
Abstract
The general strategy developed aims to favor the vascular effect of photodynamic therapy by targeting tumor vasculature. Since angiogenic endothelial cells represent an interesting target to potentiate this vascular effect, we previously described the conjugation of a photosensitizer to a peptide targeting neuropilins (NRPs) over-expressed specially in tumor angiogenic vessels and we recently characterized the mechanism of photosensitization-induced thrombogenic events. Nevertheless, in glioma-bearing nude mice, we demonstrated that the peptide moiety was degraded to various rates according to time after intravenous administration. In this study, new peptidases-resistant pseudopeptides were tested, demonstrating a molecular affinity for NRP-1 and NRP-2 recombinant chimeric proteins and devoid of affinity for VEGF receptor type 1 (Flt-1). To argue the involvement of NRP-1, MDA-MB-231 breast cancer cells were used, strongly over-expressing NRP-1 receptor. We evidenced a statistically significant decrease of the different peptides-conjugated photosensitizers uptake after RNA interference-mediated silencing of NRP-1. Peptides-conjugated photosensitizers allowed a selective accumulation into cells. In mice, no degradation was observed in plasma in vivo 4h after intravenous injection by MALDI-TOF mass spectrometry. This study draws attention to this potential problem with peptides, especially in the case of targeting strategies, and provides useful information for the future design of more stable molecules.
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Affiliation(s)
- Noémie Thomas
- Centre de Recherche en Automatique de Nancy, Nancy-University, CNRS, Vandoeuvre-lès-Nancy, France
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22
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Lin MM, Kim HH, Kim H, Dobson J, Kim DK. Surface activation and targeting strategies of superparamagnetic iron oxide nanoparticles in cancer-oriented diagnosis and therapy. Nanomedicine (Lond) 2010; 5:109-33. [DOI: 10.2217/nnm.09.96] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The advanced fabrication and surface engineering of superparamagnetic iron oxide nanoparticles (SPIONs) could offer excellent physiochemical features for noninvasive tumor imaging and drug delivery. The key issues of realization of maximized selective cancer targeting of SPIONs are minimization of uptake by macrophages, preferential binding to cancerous cells over neighboring normal cells, visualization of tumor cells prior to and after treatment and triggered drug release into target cells in a controlled fashion. In this article, we summarize the current status of fabrication of multifunctional SPION-based nanodevices specially designed for cancer-oriented diagnosis and therapy, with a focus on potential malignancy-targeting ligands’ identification and development as nanocarriers. A number of examples of passive and active targeting strategies – lymphoangiogenesis markers, cellular metabolite receptors, extracellular matrix component receptors, neuropeptide receptors and receptor-mediated bypass of the blood–brain barrier – are described in detail.
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Affiliation(s)
- Meng Meng Lin
- Institute for Science & Technology in Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent, UK
| | - Hyung-Hwan Kim
- Vascular Medicine Research Unit, Brigham & Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- International Research Center of Bioscience & Biotechnology, Jungwon University, Korea
| | - Hyuck Kim
- International Research Center of Bioscience & Biotechnology, Jungwon University, Korea
- Faculty of Herb Industry, Jungwon University, Korea
| | - Jon Dobson
- Institute for Science & Technology in Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent, UK
| | - Do Kyung Kim
- Institute for Science & Technology in Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent, UK
- International Research Center of Bioscience & Biotechnology, Jungwon University, Korea
- Electrum 229, Isafjordsgatan 22, Royal Institute of Technology (KTH), SE-16 440 Kista, Stockholm, Sweden
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23
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Kostenich G, Oron-Herman M, Kimel S, Livnah N, Tsarfaty I, Orenstein A. Diagnostic targeting of colon cancer using a novel fluorescent somatostatin conjugate in a mouse xenograft model. Int J Cancer 2008; 122:2044-9. [PMID: 18183591 DOI: 10.1002/ijc.23353] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Colorectal carcinoma is one of the more prevalent, highly malignant human tumors, occurring in about 7% of the population. However, if diagnosed and treated in its early stages, colon cancer is curable. In our study, we used a mouse xenograft model to investigate the capability of a fluorescent conjugate of a novel synthetic somatostatin (SST) analog to improve detection of human colorectal tumors that are characterized by over-expressed SST receptors. Human HT-29 colon carcinomas were induced in nude mice. After administration of the fluorescent SST conjugate, in vivo low- and high-magnification fluorescence microscopy, as well as high-resolution spectrally resolved imaging were performed, and the time-dependent biodistribution was determined quantitatively (using fiber-optic spectroscopy). Administration of the conjugate (at concentrations of 6 mg/kg body weight) enabled targeting small (1-5 mm diameter) tumors with high sensitivity and selectivity. Toxicity studies at dosages up to 1,000 mg/kg body weight did not reveal any drug related abnormalities. In conclusion, the SST conjugate significantly enhanced the detection of HT-29 colon tumors by fluorescence imaging because of a 5- to 8-fold increase in the contrast between malignant and normal tissues.
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Affiliation(s)
- Genady Kostenich
- Advanced Technology Center, Sheba Medical Center, Tel Hashomer, Israel.
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24
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Kovar JL, Simpson MA, Schutz-Geschwender A, Olive DM. A systematic approach to the development of fluorescent contrast agents for optical imaging of mouse cancer models. Anal Biochem 2007; 367:1-12. [PMID: 17521598 DOI: 10.1016/j.ab.2007.04.011] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2007] [Revised: 03/26/2007] [Accepted: 04/06/2007] [Indexed: 11/25/2022]
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25
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Tirand L, Frochot C, Vanderesse R, Thomas N, Trinquet E, Pinel S, Viriot ML, Guillemin F, Barberi-Heyob M. A peptide competing with VEGF165 binding on neuropilin-1 mediates targeting of a chlorin-type photosensitizer and potentiates its photodynamic activity in human endothelial cells. J Control Release 2006; 111:153-64. [PMID: 16423422 DOI: 10.1016/j.jconrel.2005.11.017] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Revised: 11/10/2005] [Accepted: 11/23/2005] [Indexed: 01/13/2023]
Abstract
Destruction of the neovasculature is essential for efficient tumor eradication by photodynamic therapy (PDT). Since the over-expression of receptors for vascular endothelial growth factor (VEGF) is correlated with tumor angiogenesis and subsequent growth, we conjugated a photosensitizer (5-(4-carboxyphenyl)-10,15,20-triphenyl-chlorin, TPC), via a spacer (6-aminohexanoic acid, Ahx), to a VEGF receptor-specific heptapeptide (ATWLPPR). ATWLPPR and TPC-Ahx-ATWLPPR bound exclusively to neuropilin-1 (NRP-1) recombinant chimeric protein (IC50=19 and 171 microM, respectively) but were devoid of affinity for VEGF receptor type 2 (VEGFR-2, KDR), to which ATWLPPR was initially thought to bind. TPC-Ahx-ATWLPPR was incorporated up to 25-fold more in human umbilical vein endothelial cells (HUVEC) than TPC over a 24-h period, and the addition of 8 mM ATWLPPR induced a significant decrease of this uptake (P<0.05), corroborating a receptor-mediated incorporation. Slightly less cytotoxic in the dark, TPC-Ahx-ATWLPPR exhibited enhanced in vitro photodynamic activity (10.4-fold), compared to TPC. Pharmacokinetic analysis in nude mice xenografted with U87 human malignant glioma cells revealed relevant tumor levels as soon as 1 h after intravenous injection of TPC-Ahx-ATWLPPR, and a rapid elimination from the blood compartment. Moreover, TPC-Ahx-ATWLPPR was not degraded in vivo up to 2 h after intravenous injection. Taken together, our results demonstrate that TPC-Ahx-ATWLPPR is a much more potent photosensitizer in vitro than TPC, in NRP-1-expressing cells. Thus, it may efficiently potentiate the vascular effect of PDT in vivo.
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Affiliation(s)
- Loraine Tirand
- Centre Alexis Vautrin-CRAN, UMR 7039 CNRS-UHP-INPL, Avenue de Bourgogne, F-54511 Vandoeuvre-les-Nancy Cedex, France
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