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Uher O, Caisova V, Padoukova L, Kvardova K, Masakova K, Lencova R, Frejlachova A, Skalickova M, Venhauerova A, Chlastakova A, Hansen P, Chmelar J, Kopecky J, Zhuang Z, Pacak K, Zenka J. Mannan-BAM, TLR ligands, and anti-CD40 immunotherapy in established murine pancreatic adenocarcinoma: understanding therapeutic potentials and limitations. Cancer Immunol Immunother 2021; 70:3303-3312. [PMID: 33855601 PMCID: PMC9927628 DOI: 10.1007/s00262-021-02920-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/22/2021] [Indexed: 01/04/2023]
Abstract
Pancreatic adenocarcinoma is one of the leading causes of cancer-related deaths, and its therapy remains a challenge. Our proposed therapeutic approach is based on the intratumoral injections of mannan-BAM, toll-like receptor ligands, and anti-CD40 antibody (thus termed MBTA therapy), and has shown promising results in the elimination of subcutaneous murine melanoma, pheochromocytoma, colon carcinoma, and smaller pancreatic adenocarcinoma (Panc02). Here, we tested the short- and long-term effects of MBTA therapy in established subcutaneous Panc02 tumors two times larger than in previous study and bilateral Panc02 models as well as the roles of CD4+ and CD8+ T lymphocytes in this therapy. The MBTA therapy resulted in eradication of 67% of Panc02 tumors with the development of long-term memory as evidenced by the rejection of Panc02 cells after subcutaneous and intracranial transplantations. The initial Panc02 tumor elimination is not dependent on the presence of CD4+ T lymphocytes, although these cells seem to be important in long-term survival and resistance against tumor retransplantation. The resistance was revealed to be antigen-specific due to its inability to reject B16-F10 melanoma cells. In the bilateral Panc02 model, MBTA therapy manifested a lower therapeutic response. Despite numerous combinations of MBTA therapy with other therapeutic approaches, our results show that only simultaneous application of MBTA therapy into both tumors has potential for the treatment of the bilateral Panc02 model.
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Affiliation(s)
- Ondrej Uher
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Veronika Caisova
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Lucie Padoukova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Karolina Kvardova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Kamila Masakova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Radka Lencova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Andrea Frejlachova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Marketa Skalickova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Anna Venhauerova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Adela Chlastakova
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Per Hansen
- Immunoaction LLC, Charlotte, VT, 05445, USA
| | - Jindrich Chmelar
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Jan Kopecky
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic
| | - Zhengping Zhuang
- Surgical Neurology Branch, National Institute of Neurological, Disorders and Stroke, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Karel Pacak
- Section on Medical Neuroendocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20814, USA
| | - Jan Zenka
- Department of Medical Biology, Faculty of Science, University of South Bohemia, Ceske Budejovice, 37005, Czech Republic.
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Zilli A, Arcidiacono PG, Conte D, Massironi S. Clinical impact of endoscopic ultrasonography on the management of neuroendocrine tumors: lights and shadows. Dig Liver Dis 2018; 50:6-14. [PMID: 29102525 DOI: 10.1016/j.dld.2017.10.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 10/04/2017] [Accepted: 10/09/2017] [Indexed: 02/07/2023]
Abstract
The incidence of gastroenteropancreatic neuroendocrine neoplasms has increased in the recent decades. An extensive bibliographical search was performed in PubMed to identify guidelines and primary literature (retrospective and prospective studies, systematic reviews, case series) published mostly between year 1997 and June 2017, using both medical subject heading (MeSH) terms and free-language keywords about the accuracy and diagnostic and therapeutic role of endoscopic ultrasound in the context of gastro-entero-pancreatic neuroendocrine neoplasms. Endoscopic ultrasound is the modality of choice for diagnosing pancreatic neuroendocrine neoplasms and for the locoregional staging of gastric, duodenal, pancreatic and rectal neuroendocrine neoplasms; in particular, in the setting of pancreatic neuroendocrine neoplasms it has demonstrated higher accuracy in tumor detection than other imaging modalities. Furthermore, the possibility of tattooing pancreatic lesions by endoscopic ultrasound fine needle aspiration may help surgeons to locate the tumor and avoid any demolition surgery. Finally, endoscopic ultrasound-guided therapies have been proposed and used in several studies for patients unsuitable for surgery, with good results on the control of symptoms and the reduction of tumor burden.
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Affiliation(s)
- Alessandra Zilli
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy; Postgraduate School of Gastroenterology, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Paolo Giorgio Arcidiacono
- PancreatoBiliary Endoscopy and Endosonography Division, Pancreas Translatiinal and Clinical Research Center, San Raffaele Scientific Institute, Vita Salute San Raffaele University, Milan, Italy
| | - Dario Conte
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy
| | - Sara Massironi
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Milan, Italy.
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