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Asar M, Newton-Northup J, Soendergaard M. Improving Pharmacokinetics of Peptides Using Phage Display. Viruses 2024; 16:570. [PMID: 38675913 PMCID: PMC11055145 DOI: 10.3390/v16040570] [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: 02/19/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
Phage display is a versatile method often used in the discovery of peptides that targets disease-related biomarkers. A major advantage of this technology is the ease and cost efficiency of affinity selection, also known as biopanning, to identify novel peptides. While it is relatively straightforward to identify peptides with optimal binding affinity, the pharmacokinetics of the selected peptides often prove to be suboptimal. Therefore, careful consideration of the experimental conditions, including the choice of using in vitro, in situ, or in vivo affinity selections, is essential in generating peptides with high affinity and specificity that also demonstrate desirable pharmacokinetics. Specifically, in vivo biopanning, or the combination of in vitro, in situ, and in vivo affinity selections, has been proven to influence the biodistribution and clearance of peptides and peptide-conjugated nanoparticles. Additionally, the marked difference in properties between peptides and nanoparticles must be considered. While peptide biodistribution depends primarily on physiochemical properties and can be modified by amino acid modifications, the size and shape of nanoparticles also affect both absorption and distribution. Thus, optimization of the desired pharmacokinetic properties should be an important consideration in biopanning strategies to enable the selection of peptides and peptide-conjugated nanoparticles that effectively target biomarkers in vivo.
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Affiliation(s)
- Mallika Asar
- College of Osteopathic Medicine, Kansas City University, Kansas City, MO 64106, USA;
| | | | - Mette Soendergaard
- Cell Origins LLC, 1601 South Providence Road Columbia, Columbia, MO 65203, USA;
- Department of Chemistry, Western Illinois University, Macomb, IL 61455, USA
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2
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The multifaceted roles of peptides in “always-on” near-infrared fluorescent probes for tumor imaging. Bioorg Chem 2022; 129:106182. [DOI: 10.1016/j.bioorg.2022.106182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/23/2022] [Accepted: 09/25/2022] [Indexed: 11/20/2022]
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Pro-oxidant response and accelerated ferroptosis caused by synergetic Au(I) release in hypercarbon-centered gold(I) cluster prodrugs. Nat Commun 2022; 13:4669. [PMID: 35945240 PMCID: PMC9363434 DOI: 10.1038/s41467-022-32474-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 08/02/2022] [Indexed: 12/12/2022] Open
Abstract
Medicinal applications of gold complexes have recently attracted attention due to their innovative antitumor mechanisms. In this work, two hypercoordinated carbon-centered gold clusters PAA4 and PAA5 are quantitatively synthesized by an intramolecular 6-exo-dig cyclization of polymetalated precursors. The on-bench and in vitro experimental studies demonstrate that the characteristic hypercarbon-tetragold(I) multi-center bonding in PAA4 and PAA5 not only guarantees their stability under common physiological conditions, but also facilitates a glutathione (GSH)-triggered prompt and synergetic release of active Au(I) ions in the GSH-overexpressed and acidic microenvironment of human bladder cancer EJ cells. The instantly massive release of coordination unsaturated Au(I) ions causes the efficient inhibition of thioredoxin reductases and then induces a rapid pro-oxidant response, consequently causing the occurrence of accelerated ferroptosis of EJ cells. As a result, these hypercarbon-centered gold(I) cluster prodrugs show high cytotoxicity to bladder cancer cell lines and thus exhibit a significant inhibition effect towards bladder tumors in vivo. Correlation of the synergetic domino dissociation of carbon-polymetal multi-center bonding in metal clusters with the accelerated ferroptosis of cancer cells provides a strategy for metallo-prodrugs and opens a broader prospect for the biological application of metal cluster compounds.
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Hou DY, Wang MD, Zhang NY, Xu S, Wang ZJ, Hu XJ, Lv GT, Wang JQ, Lv MY, Yi L, Wang L, Cheng DB, Sun T, Wang H, Xu W. A Lysosome-Targeting Self-Condensation Prodrug-Nanoplatform System for Addressing Drug Resistance of Cancer. NANO LETTERS 2022; 22:3983-3992. [PMID: 35548949 DOI: 10.1021/acs.nanolett.2c00540] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lysosome-targeting self-assembling prodrugs had emerged as an attractive approach to overcome the acquisition of resistance to chemotherapeutics by inhibiting lysosomal sequestration. Taking advantage of lysosomal acidification induced intracellular hydrolytic condensation, we developed a lysosomal-targeting self-condensation prodrug-nanoplatform (LTSPN) system for overcoming lysosome-mediated drug resistance. Briefly, the designed hydroxycamptothecine (HCPT)-silane conjugates self-assembled into silane-based nanoparticles, which were taken up into lysosomes by tumor cells. Subsequently, the integrity of the lysosomal membrane was destructed because of the acid-triggered release of alcohol, wherein the nanoparticles self-condensed into silicon particles outside the lysosome through intracellular hydrolytic condensation. Significantly, the LTSPN system reduced the half-maximal inhibitory concentration (IC50) of HCPT by approximately 4 times. Furthermore, the LTSPN system realized improved control of large established tumors and reduced regrowth of residual tumors in several drug-resistant tumor models. Our findings suggested that target destructing the integrity of the lysosomal membrane may improve the therapeutic effects of chemotherapeutics, providing a potent treatment strategy for malignancies.
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Affiliation(s)
- Da-Yong Hou
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Man-Di Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Ni-Yuan Zhang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Shaoxin Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhi-Jia Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Xing-Jie Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China
| | - Gan-Tian Lv
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Jia-Qi Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
| | - Mei-Yu Lv
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Li Yi
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Lu Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
| | - Dong-Bing Cheng
- School of Chemistry, Chemical Engineering & Life Science, Wuhan University of Technology, No.122 LuoshiRoad, Wuhan, 430070, China
| | - Taolei Sun
- School of Chemistry, Chemical Engineering & Life Science, Wuhan University of Technology, No.122 LuoshiRoad, Wuhan, 430070, China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China
- Sino-Danish Center for Education and Research, University of Chinese Academy of Sciences, Beijing, 100190, China
| | - Wanhai Xu
- Department of Urology, the Fourth Hospital of Harbin Medical University, Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, 150001, China
- NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Harbin Medical University, Harbin, 150001, China
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5
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CD47-targeted optical molecular imaging and near-infrared photoimmunotherapy in the detection and treatment of bladder cancer. Mol Ther Oncolytics 2022; 24:319-330. [PMID: 35118190 PMCID: PMC8784304 DOI: 10.1016/j.omto.2021.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/28/2021] [Indexed: 12/03/2022] Open
Abstract
Transurethral resection of bladder tumor (TURBT) followed by intravesical therapy remains the most effective strategy for the management of non-muscle-invasive bladder cancer worldwide. TURBT has two purposes: to remove all visible tumors and to obtain tumor specimens for histopathological analysis. However, the detection of flat and small malignant lesions under white-light cystoscopy is extremely challenging, and residual lesions are still the main reason for the high recurrence rate of bladder cancer. We hypothesized that visual enhancement of malignant lesions using targeted optical molecular imaging could potentially highlight residual tumors in the bladder during surgery, and near-infrared photoimmunotherapy (NIR-PIT) could kill exfoliated cancer cells and residual tumors. A mouse model of complete or partial bladder tumor resection was established under the guidance of optical molecular imaging mediated by indocyanine green and anti-CD47-Alexa Fluor 790, respectively. Once the tumor recurred, mouse model received repeated CD47-targeted NIR-PIT. After complete resection, there was no tumor recurrence. Furthermore, the growth rate of recurrent tumor decreased significantly after repeated NIR-PIT. Therefore, CD47-targeted optical molecular imaging can potentially assist urologists to detect and remove all tumors, and repeated NIR-PIT shows the potential to reduce tumor recurrence rates and inhibit the growth of recurrent tumor.
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Shang W, Peng L, He K, Guo P, Deng H, Liu Y, Chen Z, Tian J, Xu W. A clinical study of a CD44v6-targeted fluorescent agent for the detection of non-muscle invasive bladder cancer. Eur J Nucl Med Mol Imaging 2022; 49:3033-3045. [PMID: 35190862 DOI: 10.1007/s00259-022-05701-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 01/20/2022] [Indexed: 01/16/2023]
Abstract
BACKGROUND Bladder cancer is the fifth most common malignancy in humans. Cystoscopy under white light imaging is the gold standard for bladder cancer diagnosis, but some tumors are difficult to visualize and can be overlooked, resulting in high recurrence rates. We previously developed a phage display-derived peptide-based near-infrared imaging probe, PLSWT7-DMI, which binds specifically to bladder cancer cells and is nontoxic to animals. Here, we report a clinical research of this probe for near-infrared fluorescence endoscopic detection of bladder cancer. RESULTS The purity, efficacy, safety, and nontoxicity of PLSWT7-DMI were confirmed prior to its clinical application. Twenty-two patients diagnosed with suspected non-muscle invasive bladder cancer were enrolled in the present study. Following intravesical administration of the probe, the entire mucosa was imaged under white and near-infrared imaging using an in-house developed endoscope that could switch between these two modes. The illuminated lesions under near-infrared light were biopsied and sent for histopathological examination. We observed a 5.1-fold increase in the fluorescence intensity in the tumor samples compared to normal tissue, and the probe demonstrated a sensitivity and specificity of 91.2% and 90%, respectively. Common diagnostic challenges, such as small satellite tumors, carcinoma in situ, and benign suspicious mucosa, were visualized and could be distinguished from cancer. Furthermore, no adverse effects were observed in humans. These first-in-human results indicate that PLSWT7-DMI-based near-infrared fluorescence endoscopy is a safe and effective approach for the improved detection of bladder cancer, and may enable thorough resection to prevent recurrence.
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Affiliation(s)
- Wenting Shang
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Li Peng
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, People's Republic of China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Yiyuan Street #37, Nangang District, Harbin, Heilongjiang, 150001, People's Republic of China
| | - Kunshan He
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.,Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University, Zhongguancun East Road #95, Haidian Dist., Beijing, 100191, China
| | - Pengyu Guo
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, People's Republic of China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Yiyuan Street #37, Nangang District, Harbin, Heilongjiang, 150001, People's Republic of China
| | - Han Deng
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yu Liu
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University, Zhongguancun East Road #95, Haidian Dist., Beijing, 100191, China
| | - Ziyin Chen
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, People's Republic of China.,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Yiyuan Street #37, Nangang District, Harbin, Heilongjiang, 150001, People's Republic of China
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China. .,Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Medicine and Engineering, Beihang University, Zhongguancun East Road #95, Haidian Dist., Beijing, 100191, China.
| | - Wanhai Xu
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, People's Republic of China. .,NHC Key Laboratory of Molecular Probes and Targeted Diagnosis and Therapy, Yiyuan Street #37, Nangang District, Harbin, Heilongjiang, 150001, People's Republic of China.
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7
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Qi A, Wang C, Ni S, Meng Y, Wang T, Yue Z, Yang K, Li Y, Cheng Z, Guo P, Zhang C. Intravesical Mucoadhesive Hydrogel Induces Chemoresistant Bladder Cancer Ferroptosis through Delivering Iron Oxide Nanoparticles in a Three-Tier Strategy. ACS APPLIED MATERIALS & INTERFACES 2021; 13:52374-52384. [PMID: 34714617 DOI: 10.1021/acsami.1c14944] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bladder cancer (BCa) is the most costly solid tumor owing to its high recurrence. Relapsed cancer is known to acquire chemoresistant features after standard intravesical chemotherapy. This cancer state is vulnerable to ferroptosis, which occurs when lipid peroxides generated by iron metabolism accumulate to lethal levels. Increasing the labile iron pool (LIP) by iron oxide nanoparticles (IONPs) promises to inhibit chemoresistant BCa (CRBCa), but systemically administered IONPs do not sufficiently accumulate at the tumor site. Therefore, their efficacy is weakened. Here, we present a three-tier delivery strategy through a mucoadhesive hydrogel platform conveying hyaluronic acid-coated IONPs (IONP-HA). When instilled, the hydrogel platform first adhered to the interface of the tumor surface, sustainably releasing IONP-HA. Subsequently, the tumor stiffness and interstitial fluid pressure were reduced by photothermal therapy, promoting IONP-HA diffusion into the deep cancer tissue. As CRBCa expressed high levels of CD44, the last delivery tier was achieved through antibody-mediated endocytosis to increase the LIP, ultimately inducing ferroptosis. This three-tiered strategy delivered the IONPs stepwise from anatomical to cellular levels and increased the iron content by up to 50-fold from that of systematic administration, which presents a potential regimen for CRBCa.
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Affiliation(s)
- Ao Qi
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
| | - Chunyang Wang
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
| | - Shaobin Ni
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
| | - Yuyang Meng
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
| | - Tengda Wang
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
| | - Ziqi Yue
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Youzheng Street #23, Nangang District, Harbin 150001, P. R. China
- Department of Forensic Medicine, Harbin Medical University, Baojian Road #157, Nangang District, Harbin 150001, P. R. China
| | - Kaiqi Yang
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Youzheng Street #23, Nangang District, Harbin 150001, P. R. China
| | - Yuqian Li
- Department of Forensic Medicine, Harbin Medical University, Baojian Road #157, Nangang District, Harbin 150001, P. R. China
| | - Zhe Cheng
- Department of Forensic Medicine, Harbin Medical University, Baojian Road #157, Nangang District, Harbin 150001, P. R. China
| | - Pengyu Guo
- Urology Surgery Department, The Fourth Hospital of Harbin Medical University, Youzheng Street #23, Nangang District, Harbin 150001, P. R. China
| | - Cheng Zhang
- Urology Surgery Department, The First Affiliated Hospital of Harbin Medical University, Yiyuan Street #37, Nangang District, Harbin 150001, P. R. China
- Urology Surgery Department, The Fourth Affiliated Hospital of Zhejiang University School of Medicine, Shangchengdadao Street #N1, Yiwu 322000, P. R. China
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Yang Y, Liu C, Yan X, Li J, Yang X. En Bloc Tumor Resection, Optical Molecular Imaging, and the Potential Synergy of the Combination of the Two Techniques in Bladder Cancer. Front Oncol 2021; 11:638083. [PMID: 33796465 PMCID: PMC8008058 DOI: 10.3389/fonc.2021.638083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/04/2021] [Indexed: 12/14/2022] Open
Abstract
Although transurethral resection of bladder tumor is the golden standard for the treatment of non-muscle invasive bladder cancer, this surgical procedure still has some serious drawbacks. For example, piecemeal resection of tumor tissue results in exfoliated tumor cells dissemination and implantation, and fragmented tumor specimens make it difficult for pathologists to accurately assess the pathological stage and histologic grade. En bloc tumor resection follows the basic principle of oncological surgery and provides an intact tumor specimen containing detrusor muscle for pathologists to make accurate histopathological assessment. However, there is no robust clinical evidence that en bloc tumor resection is superior to conventional resection in terms of oncological outcomes. Considering the high recurrence rate, small or occult tumor lesions may be overlooked and incomplete tumor resection may occur during white light cystoscopy-assisted transurethral resection. Molecular fluorescent tracers have the ability to bind tumor cells with high sensitivity and specificity. Optical molecular imaging mediated by it can detect small or occult malignant lesions while minimizing the occurrence of false-positive results. Meanwhile, optical molecular imaging can provide dynamic and real-time image guidance in the surgical procedure, which helps urologists to accurately determine the boundary and depth of tumor invasion, so as to perform complete and high-quality transurethral tumor resection. Integrating the advantages of these two technologies, optical molecular imaging-assisted en bloc tumor resection shows the potential to improve the positive detection rate of small or occult tumor lesions and the quality of transurethral resection, resulting in high recurrence-free and progression-free survival rates.
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Affiliation(s)
- Yongjun Yang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Chao Liu
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Xiaoting Yan
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Jiawei Li
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Xiaofeng Yang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, China
- Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, China
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9
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Yang Y, Liu C, Yang X. Endoscopic Molecular Imaging plus Photoimmunotherapy: A New Strategy for Monitoring and Treatment of Bladder Cancer. MOLECULAR THERAPY-ONCOLYTICS 2020; 18:409-418. [PMID: 32913890 PMCID: PMC7452043 DOI: 10.1016/j.omto.2020.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Due to the high recurrence and progression rate of non-muscle invasive bladder cancer after transurethral resection of bladder tumor, some new optical imaging technologies have arisen as auxiliary imaging modes for white light cystoscopy to improve the detection rate of small or occult tumor lesions, such as photodynamic diagnosis, narrow-band imaging, and molecular imaging. White light cystoscopy is inadequate and imperfect for bladder cancer detection, and thus residual tumors or coexisting flat malignant lesions, especially carcinoma in situ, would be ignored during conventional resection. The bladder, a hollow organ with high compliance, provides an ideal closed operation darkroom for endoscopic molecular imaging free from interference of external light sources. Also, intravesical instillation of a molecular fluorescent tracer is simple and convenient before surgery through the urethra. Molecular fluorescent tracer has high sensitivity and specificity to tumor cells, and its mediated molecular imaging allows small or occult tumor lesion detection while minimizing false-positive results. Meanwhile, endoscopic molecular imaging provides a real-time and dynamic image during surgery, which helps urologists to perform high-quality and complete tumor resection through accurate judgment of tumor boundaries and depth of invasion. Photoimmunotherapy is a novel molecular targeted therapeutic pattern of photodynamic therapy that kills malignant cells selectively and minimizes the cytotoxicity to normal tissues. The combination of endoscopic molecular imaging and photoimmunotherapy used in initial treatment may avoid the need of repeat transurethral resection in strictly selected patients and improve oncological outcomes such as recurrence-free survival and overall survival after operation.
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Affiliation(s)
- Yongjun Yang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Chao Liu
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xiaofeng Yang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China.,Department of Urology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
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10
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Guan SS, Wu CT, Liao TZ, Luo TY, Lin KL, Liu SH. Indium-111-labeled CD166-targeted peptide as a potential nuclear imaging agent for detecting colorectal cancer stem-like cells in a xenograft mouse model. EJNMMI Res 2020; 10:13. [PMID: 32096011 PMCID: PMC7040160 DOI: 10.1186/s13550-020-0597-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/17/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Cancer stem cells (CSCs) are involved in drug resistance, metastasis, and relapse of cancers, which can significantly affect tumor therapy. Hence, to develop specifically therapeutic target probe at CSCs for improvement of survival and quality of life of cancer patients is urgently needed. The CD166 protein has been suggested to be involved in colorectal cancer (CRC) tumorigenesis and to be considered a marker for colorectal CSCs (CRCSCs) detection. In this study, therefore, we attend to apply a nuclear imaging agent probe, Glycine18-Cystine-linked CD166-targeted peptides (CD166tp-G18C), to detect the changes of CD166 level in a CRC xenograft mouse model. RESULTS We isolated the CD166-positive cells from the HCT15 CRC cell line (CD166+HCT15) and evaluated their morphology and ability of clone formation, migration, protein expression, and drug resistance. The CD166-positive HCT15 cells display the CSCs characteristics. We discovered and designed a CD166-targeted peptide (CD166tp-G18C) as a targeted probe of CRC stem-like cell for cell binding assay. The CD166tp-G18C confirmed the CD166 protein targeting ability in CD166+HCT15 cells. The diethylenetriaminopentaacetic acid (DTPA)-conjugated CD166tp-G18C further was labeled with indium-111 (111In-DTPA-CD166tp-G18C) as nuclear imaging agent for imaging and bio-distribution analysis in vivo. Finally, we observed that the 111In-DTPA-CD166tp-G18C was significantly enhanced in tumor tissues of CD166+HCT15 xenograft mice as compared to the non-CD166tp-G18C control. CONCLUSIONS Our results indicated that the indium-111-labeled CD166tp-G18C may be served as a powerful tool for colorectal CSCs nuclear imaging in the CRC patients.
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Affiliation(s)
- Siao-Syun Guan
- Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan, Taiwan
| | - Cheng-Tien Wu
- Department of Nutrition, China Medical University, Taichung, 40402, Taiwan.,Master Program of Food and Drug Safety, China Medical University, Taichung, 40402, Taiwan
| | - Tse-Zung Liao
- Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan, Taiwan
| | - Tsai-Yueh Luo
- Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan, Taiwan
| | - Kun-Liang Lin
- Institute of Nuclear Energy Research, Atomic Energy Council, Taoyuan, Taiwan
| | - Shing-Hwa Liu
- Institute of Toxicology, College of Medicine, National Taiwan University, No. 1, Jen-Ai Road, Section 1, Taipei, 10051, Taiwan. .,Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan. .,Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan.
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11
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Eisenblätter M, Wildgruber M. Optical and Optoacoustic Imaging Probes. Recent Results Cancer Res 2020; 216:337-355. [PMID: 32594392 DOI: 10.1007/978-3-030-42618-7_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Tissue has characteristic properties when it comes to light absorption and scattering. For optical (OI) and optoacoustic imaging (OAI) these properties can be utilised to visualise biological tissue characteristics, as, for example, the oxygenation state of haemoglobin alters the optical and optoacoustic properties of the molecule.
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Affiliation(s)
- Michel Eisenblätter
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Freiburg im Breisgau, Germany.
| | - Moritz Wildgruber
- Department of Radiology, Ludwig Maximilians-University of Munich, Munich, Germany
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