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Krishnan MA, Pandit A, Sharma R, Chelvam V. Imaging of prostate cancer: optimizing affinity to prostate specific membrane antigen by spacer modifications in a tumor spheroid model. J Biomol Struct Dyn 2022; 40:9909-9930. [PMID: 34180367 DOI: 10.1080/07391102.2021.1936642] [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] [Indexed: 12/16/2022]
Abstract
Early diagnosis of prostate cancer (PCa) is crucial for staging, treatment and management of patients. Prostate specific membrane antigen (PSMA), highly over-expressed on PCa cells, is an excellent target for selective imaging of PCa. In recent years, various scaffolds have been explored as potential carriers to target diagnostic and therapeutic agents to PSMA+ tumour cells. Numerous fluorescent or radioisotope probes linked via a peptide linker have been developed that selectively binds to PCa cells. However, there are very few reports that examine the effects of chemical modifications in the peptide linker of an imaging probe on its affinity to PSMA protein. This report systematically investigates the impact of hydrophobic aromatic moieties in the peptide linker on PSMA affinity and in vitro performance. For this, a series of fluorescent bioconjugates 12-17 with different aromatic spacers were designed, synthesized, and their interactions within the PSMA pocket were first analysed in silico. Cell uptake studies were then performed for 12-17 in PSMA+ cell lines and 3D tumour models in vitro. Binding affinity values of 12-17 were found to be in the range of 36 to 157.9 nM, and 12 with three aromatic groups in the spacer exhibit highest affinity (KD = 36 nM) compared to 17 which is devoid of aromatic groups. These studies suggest that aromatic groups in the spacer region can significantly affect deep tissue imaging of fluorescent bioconjugates. Bioconjugate 12 can be a promising diagnostic tool, and conjugation to near-infrared agents would further its applications in deep-tissue imaging and surgery. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mena Asha Krishnan
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Amit Pandit
- Department of Chemistry, Indian Institute of Technology Indore, Indore, India
| | - Rajesh Sharma
- School of Pharmacy, Devi Ahilya University, Indore, India
| | - Venkatesh Chelvam
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India.,Department of Chemistry, Indian Institute of Technology Indore, Indore, India
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Adam S, Martin-Diener E, Camey B, Egger Hayoz C, Konzelmann I, Mohsen Mousavi S, Herrmann C, Rohrmann S, Wanner M, Staehelin K, Strebel RT, Randazzo M, John H, Schmid HP, Arndt V. Health-related quality of life in long-term prostate cancer survivors after nerve-sparing and non-nerve-sparing radical prostatectomy-Results from the multiregional PROCAS study. Cancer Med 2020; 9:5416-5424. [PMID: 32524704 PMCID: PMC7402816 DOI: 10.1002/cam4.3197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 12/13/2022] Open
Abstract
Background Nerve‐sparing (NS) surgery was developed to improve postoperative sexual and potentially urological outcomes after radical prostatectomy (RP). However, it is largely unknown how NSRP affects health‐related quality of life (HRQoL) including urinary and sexual outcomes in prostate cancer (PC) survivors 5‐10 years after diagnosis in comparison with Non‐NSRP. Methods The study population included 382 stage pT2‐T3N0M0 PC survivors 5‐10 years post diagnosis, who were identified from the multiregional Prostate Cancer Survivorship in Switzerland (PROCAS) study. Briefly, in 2017/2018, PC survivors were identified via six population‐based cancer registries based in both German‐ and French‐speaking Switzerland. HRQoL and PC‐specific symptom burden was assessed using the EORTC QLQ‐C30 and EORTC QLQ‐PR25 questionnaires. Differences in HRQoL outcomes between survivors treated with NSRP (uni‐ & bilateral) and Non‐NSRP were analyzed with multivariable linear regression adjusted for age, years since diagnosis, cancer stage, comorbidities at diagnosis, and further therapies, if appropriate. Multiple imputation was performed to minimize the bias due to missing data. Results Five to ten years after diagnosis, PC survivors treated with NSRP and Non‐NSRP reported similar symptom burden and comparable HRQoL function scores. The only significant differences were reported for sexual activity, whereas PC survivors who underwent NSRP reported statistically significant (P = .031) higher sexual activity than those on Non‐NSRP. NSRP and Non‐NSRP reported similar scores for urinary symptoms and all other HRQoL outcomes. Conclusions Our results support nerve‐sparing techniques as an option to improve postoperative sexual, but not urinary outcomes after RP in long‐term PC survivors.
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Affiliation(s)
- Salome Adam
- National Institute for Cancer Epidemiology and Registration (NICER), c/o University of Zurich, Zurich, Switzerland.,Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - Eva Martin-Diener
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | | | | | | | - Seyed Mohsen Mousavi
- Cancer Registry East Switzerland, St. Gallen, Switzerland.,Cancer Registry Graubünden and Glarus, Chur, Switzerland
| | - Christian Herrmann
- Cancer Registry East Switzerland, St. Gallen, Switzerland.,Cancer Registry Graubünden and Glarus, Chur, Switzerland
| | - Sabine Rohrmann
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.,Cancer Registry Zurich, Zug, Schaffhausen and Schwyz, University Hospital Zurich, Zurich, Switzerland
| | - Miriam Wanner
- Division of Chronic Disease Epidemiology, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland.,Cancer Registry Zurich, Zug, Schaffhausen and Schwyz, University Hospital Zurich, Zurich, Switzerland
| | | | - Räto T Strebel
- Department of Urology, Graubünden Cantonal Hospital, Chur, Switzerland
| | - Marco Randazzo
- Department of Urology, Winterthur Cantonal Hospital, Winterthur, Switzerland
| | - Hubert John
- Department of Urology, Winterthur Cantonal Hospital, Winterthur, Switzerland
| | - Hans-Peter Schmid
- Department of Urology, St. Gallen Cantonal Hospital, St. Gallen, Switzerland
| | - Volker Arndt
- National Institute for Cancer Epidemiology and Registration (NICER), c/o University of Zurich, Zurich, Switzerland.,Unit of Cancer Survivorship, Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany
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3
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Ngoo KS, Honda M, Kimura Y, Yumioka T, Iwamoto H, Morizane S, Hikita K, Takenaka A. Longitudinal study on the impact of urinary continence and sexual function on health-related quality of life among Japanese men after robot-assisted radical prostatectomy. Int J Med Robot 2019; 15:e2018. [PMID: 31115140 DOI: 10.1002/rcs.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/06/2019] [Accepted: 05/14/2019] [Indexed: 02/01/2023]
Abstract
BACKGROUND The aim of this study is to investigate the impact of robotic-assisted radical prostatectomy (RARP) on the health-related quality of life (HRQOL). METHODS We prospectively reviewed HRQOL parameters using Short-Form Health Survey, patient self-reporting of urinary incontinence and International Index of Erectile Function, among patients who underwent RARP between 2010 and 2016. RESULTS Among 249 men studied, all had significantly worse HRQOL domain scores at 1 month post operatively but 24 months after surgery, all domains reached or surpassed their baseline values. Only Bodily Pain, General Health, Role-Emotional, Mental Health domains, and Mental Health Composite were significantly improved. Improvement in urinary continence was mirrored by improvements in both Mental and Physical Component Scores. CONCLUSIONS Within a 2-year post-operative period, men who underwent RARP had regained their overall quality of life. The recovery of urinary continence significantly impacted the mental, physical, emotional, and social well-being of those patients.
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Affiliation(s)
- Kay Seong Ngoo
- Department of Urology, Hospital Angkatan Tentera Mizan, Kuala Lumpur, Malaysia
| | - Masashi Honda
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Yusuke Kimura
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Tetsuya Yumioka
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Hideto Iwamoto
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Shuichi Morizane
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Katsuya Hikita
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Atsushi Takenaka
- Department of Urology, Tottori University Faculty of Medicine, Yonago, Japan
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Marzorati C, Monzani D, Mazzocco K, Pavan F, Cozzi G, De Cobelli O, Monturano M, Pravettoni G. Predicting trajectories of recovery in prostate cancer patients undergone Robot-Assisted Radical Prostatectomy (RARP). PLoS One 2019; 14:e0214682. [PMID: 30946773 PMCID: PMC6448842 DOI: 10.1371/journal.pone.0214682] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/18/2019] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To identify trends of patients' urinary and sexual dysfunctions from a clinical and psychological perspective and understand whether sociodemographic and medical predictors could differentiate among patients following different one-year longitudinal trajectories. METHODS An Italian sample of 478 prostate cancer patients undergone Robot-Assisted Radical Prostatectomy completed the EPIC-26 survey between July 2015 and July 2016 at the pre-hospitalization (T0), 45 days (T1) and 3 (T2), 6 (T3), 9 (T4), and 12 months (T5) after surgery. Sociodemographic and clinical characteristics (age, BMI, diabetes, nerve-sparing procedure) were also collected. Latent Class Growth Analysis was conducted separately for sexual dysfunction and urinary incontinence EPIC-26 subscales. The association between membership in the two longitudinal trajectories of urinary and sexual dysfunctions was assessed by considering Chi-square test and its related contingency table. RESULTS People who have a high level of urinary incontinence at T1 are likely to have a worse recovery. Age, BMI and pre-surgical continence may affect the level of incontinence at T1 and the recovery trajectories. Patients with low and moderate sexual problems at T1 can face a moderate linear recovery, while people with high level of impotence immediately after surgery may take a longer period to solve sexual dysfunctions. Age and the pre-surgical sexual condition may impact the recovery. Finally, a great proportion of patients reported both steady problems in sexual function and constant high levels of urinary incontinence over time. CONCLUSIONS This study highlights different categories of patients at risk who may be important to know in order to develop personalized medical pathways and predictive models in a value-based healthcare.
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Affiliation(s)
- Chiara Marzorati
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
- Applied Research Division for Cognitive and Psychological Science, European Institute of Oncology IRCCS, Milan, Italy
| | - Dario Monzani
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Ketti Mazzocco
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
- Applied Research Division for Cognitive and Psychological Science, European Institute of Oncology IRCCS, Milan, Italy
| | - Francesca Pavan
- Patient Safety & Risk Management Service, European Institute of Oncology IRCCS, Milan, Italy
| | - Gabriele Cozzi
- Division of Urology, European Institute of Oncology IRCCS, Milan, Italy
| | - Ottavio De Cobelli
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
- Division of Urology, European Institute of Oncology IRCCS, Milan, Italy
| | - Massimo Monturano
- Patient Safety & Risk Management Service, European Institute of Oncology IRCCS, Milan, Italy
| | - Gabriella Pravettoni
- Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
- Applied Research Division for Cognitive and Psychological Science, European Institute of Oncology IRCCS, Milan, Italy
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Kularatne SA, Thomas M, Myers CH, Gagare P, Kanduluru AK, Crian CJ, Cichocki BN. Evaluation of Novel Prostate-Specific Membrane Antigen-Targeted Near-Infrared Imaging Agent for Fluorescence-Guided Surgery of Prostate Cancer. Clin Cancer Res 2018; 25:177-187. [PMID: 30201762 DOI: 10.1158/1078-0432.ccr-18-0803] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 07/13/2018] [Accepted: 09/05/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE The ability to locate and remove all malignant lesions during radical prostatectomy leads not only to prevent biochemical recurrence (BCR) and possible side effects but also to improve the life expectancy of patients with prostate cancer. Fluorescence-guided surgery (FGS) has emerged as a technique that uses fluorescence to highlight cancerous cells and guide surgeons to resect tumors in real time. Thus, development of tumor-specific near-infrared (NIR) agents that target biomarkers solely expressed on prostate cancer cells will enable to assess negative tumor margins and affected lymph nodes. EXPERIMENTAL DESIGN Because PSMA is overexpressed in prostate cancer cells in >90% of the prostate cancer patient population, a prostate-specific membrane antigen (PSMA)-targeted NIR agent (OTL78) was designed and synthesized. Optical properties, in vitro and in vivo specificity, tumor-to-background ratio (TBR), accomplishment of negative surgical tumor margins using FGS, pharmacokinetics (PKs) properties, and preclinical toxicology of OTL78 were then evaluated in requisite models. RESULTS OTL78 binds to PSMA-expressing cells with high affinity, concentrates selectively to PSMA-positive cancer tissues, and clears rapidly from healthy tissues with a half-time of 17 minutes. It also exhibits an excellent TBR (5:1) as well as safety profile in animals. CONCLUSIONS OTL78 is an excellent tumor-specific NIR agent for use in fluorescence-guided radical prostatectomy and FGS of other cancers.
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Affiliation(s)
| | - Mini Thomas
- On Target Laboratories, West Lafayette, Indiana
| | | | | | | | - Christa J Crian
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, Indiana
| | - Brandy N Cichocki
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, Indiana
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