A rare case of desmoplastic malignant melanoma which produced many difficulties in diagnosis is reported. Analysis of histological structure of the primary tumor and its metastases as well as signs of melanocytic differentiation found at electron-microscopic level enabled differentiation of this tumor with neoplasms of another histogenesis which is important for treatment and prognosis.
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January 2025
Amity School of Biological Sciences, Amity University Mohali, Punjab, India. Electronic address:
Pancreatic ductal adenocarcinoma (PDAC) is a lethal malignancy with a poor overall survival rate. Cellular stress response pathways promoting cancer cell fitness in harsh tumor microenvironment (TME) play a critical role in cancer growth and survival. The influence of oncogenic Kras, multi-functional heterogeneous cancer-associated fibroblasts (CAFs), and immunosuppressive TME on cancer cells makes the disease more complex and difficult to treat.
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Laboratory and Blood Bank, Anatomic Pathology Section, King Faisal Hospital, Makkah, SAU.
Desmoplastic fibroblastoma (collagenous fibroma) is a rare, benign fibroblastic/myofibroblastic tumor that usually arises in the subcutaneous and intramuscular tissues. This tumor type has rarely been described to arise primarily in bones. This is a case of intraosseous desmoplastic fibroblastoma occurring in the mandible of a 35-year-old woman that was detected incidentally during a routine dental examination.
View Article and Find Full Text PDFThe GLP-1R agonist semaglutide reshapes pancreatic cancer associated fibroblasts reducing collagen proline hydroxylation and favoring T lymphocyte infiltration.
J Exp Clin Cancer Res
January 2025
Department of Biology and Biotechnologies "Charles Darwin", Sapienza University, 00185, Rome, Italy.
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View Article and Find Full Text PDFTargeting uPAR with an antibody-drug conjugate suppresses tumor growth and reshapes the immune landscape in pancreatic cancer models.
Sci Adv
January 2025
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Antibody-drug conjugates (ADCs) hold promise to advance targeted therapy of pancreatic ductal adenocarcinoma (PDAC), where the desmoplastic tumor stroma challenges effective treatment. Here, we explored the urokinase plasminogen activator receptor (uPAR) as a candidate ADC target in PDAC, harnessing its massive tumoral and stromal expression in this stroma-dense tumor. We generated a site-specific ADC offering high-affinity, cross-species reactivity, and efficient internalization of the anti-uPAR monoclonal antibody, FL1, carrying a potent anthracycline derivative (PNU-158692).
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Endosc Ultrasound
December 2024
Department of Gastroenterology, Ponderas Academic Hospital, Bucharest, Romania.
Background: EUS-guided fine-needle biopsy is the procedure of choice for the diagnosis of pancreatic ductal adenocarcinoma (PDAC). Nevertheless, the samples obtained are small and require expertise in pathology, whereas the diagnosis is difficult in view of the scarcity of malignant cells and the important desmoplastic reaction of these tumors. With the help of artificial intelligence, the deep learning architectures produce a fast, accurate, and automated approach for PDAC image segmentation based on whole-slide imaging.
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