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Perera CJ, Hosen SZ, Khan T, Fang H, Mekapogu AR, Xu Z, Falasca M, Chari ST, Wilson JS, Pirola R, Greening DW, Apte MV. Proteomic profiling of small extracellular vesicles derived from mouse pancreatic cancer and stellate cells: Role in pancreatic cancer. Proteomics 2024; 24:e2300067. [PMID: 38570832 DOI: 10.1002/pmic.202300067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 02/17/2024] [Accepted: 03/18/2024] [Indexed: 04/05/2024]
Abstract
Small extracellular vesicles (sEVs) are cell-derived vesicles evolving as important elements involved in all stages of cancers. sEVs bear unique protein signatures that may serve as biomarkers. Pancreatic cancer (PC) records a very poor survival rate owing to its late diagnosis and several cancer cell-derived proteins have been reported as candidate biomarkers. However, given the pivotal role played by stellate cells (PSCs, which produce the collagenous stroma in PC), it is essential to also assess PSC-sEV cargo in biomarker discovery. Thus, this study aimed to isolate and characterise sEVs from mouse PC cells and PSCs cultured alone or as co-cultures and performed proteomic profiling and pathway analysis. Proteomics confirmed the enrichment of specific markers in the sEVs compared to their cells of origin as well as the proteins that are known to express in each of the culture types. Most importantly, for the first time it was revealed that PSC-sEVs are enriched in proteins (including G6PI, PGAM1, ENO1, ENO3, and LDHA) that mediate pathways related to development of diabetes, such as glucose metabolism and gluconeogenesis revealing a potential role of PSCs in pancreatic cancer-related diabetes (PCRD). PCRD is now considered a harbinger of PC and further research will enable to identify the role of these components in PCRD and may develop as novel candidate biomarkers of PC.
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Affiliation(s)
- Chamini J Perera
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Sm Zahid Hosen
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Tanzila Khan
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Haoyun Fang
- Research Centre for Extracellular Vesicles, La Trobe University, Bundoora, Australia
- Baker Heart and Diabetes Institute, Melbourne, Australia
- Department of Cardiovascular Research, Translation and Implementation, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Australia
| | - Alpha Raj Mekapogu
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Zhihong Xu
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Marco Falasca
- Metabolic Signalling Group, Curtin Medical School Faculty of Health Sciences, Curtin University, Perth, Australia
| | - Suresh T Chari
- Department of Gastroenterology, Hepatology and Nutrition, M. D Anderson Cancer Centre, University of Texas, Houston, Texas, USA
| | - Jeremy S Wilson
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - Ron Pirola
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
| | - David W Greening
- Research Centre for Extracellular Vesicles, La Trobe University, Bundoora, Australia
- Baker Heart and Diabetes Institute, Melbourne, Australia
- Department of Cardiovascular Research, Translation and Implementation, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Australia
| | - Minoti V Apte
- Pancreatic Research Group, South Western Sydney Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Ingham Institute of Applied Medical Research, Liverpool, NSW, Australia
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de Barros NR, Gomez A, Ermis M, Falcone N, Haghniaz R, Young P, Gao Y, Aquino AF, Li S, Niu S, Chen R, Huang S, Zhu Y, Eliahoo P, Sun A, Khorsandi D, Kim J, Kelber J, Khademhosseini A, Kim HJ, Li B. Gelatin methacryloyl and Laponite bioink for 3D bioprinted organotypic tumor modeling. Biofabrication 2023; 15:10.1088/1758-5090/ace0db. [PMID: 37348491 PMCID: PMC10683563 DOI: 10.1088/1758-5090/ace0db] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/22/2023] [Indexed: 06/24/2023]
Abstract
Three-dimensional (3D)in vitrotumor models that can capture the pathophysiology of human tumors are essential for cancer biology and drug development. However, simulating the tumor microenvironment is still challenging because it consists of a heterogeneous mixture of various cellular components and biological factors. In this regard, current extracellular matrix (ECM)-mimicking hydrogels used in tumor tissue engineering lack physical interactions that can keep biological factors released by encapsulated cells within the hydrogel and improve paracrine interactions. Here, we developed a nanoengineered ion-covalent cross-linkable bioink to construct 3D bioprinted organotypic tumor models. The bioink was designed to implement the tumor ECM by creating an interpenetrating network composed of gelatin methacryloyl (GelMA), a light cross-linkable polymer, and synthetic nanosilicate (Laponite) that exhibits a unique ionic charge to improve retention of biological factors released by the encapsulated cells and assist in paracrine signals. The physical properties related to printability were evaluated to analyze the effect of Laponite hydrogel on bioink. Low GelMA (5%) with high Laponite (2.5%-3.5%) composite hydrogels and high GelMA (10%) with low Laponite (1.0%-2.0%) composite hydrogels showed acceptable mechanical properties for 3D printing. However, a low GelMA composite hydrogel with a high Laponite content could not provide acceptable cell viability. Fluorescent cell labeling studies showed that as the proportion of Laponite increased, the cells became more aggregated to form larger 3D tumor structures. Reverse transcription-polymerase chain reaction (RT-qPCR) and western blot experiments showed that an increase in the Laponite ratio induces upregulation of growth factor and tissue remodeling-related genes and proteins in tumor cells. In contrast, cell cycle and proliferation-related genes were downregulated. On the other hand, concerning fibroblasts, the increase in the Laponite ratio indicated an overall upregulation of the mesenchymal phenotype-related genes and proteins. Our study may provide a rationale for using Laponite-based hydrogels in 3D cancer modeling.
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Affiliation(s)
- Natan Roberto de Barros
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Alejandro Gomez
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- Department of Biology, California State University, Northridge, CA 91330, United States of America
| | - Menekse Ermis
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Department of Biology, Baylor University, 101 Bagby Ave, TX 76706, United Ustates of America
| | - Natashya Falcone
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Patric Young
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Yaqi Gao
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Albert-Fred Aquino
- Department of Biology, California State University, Northridge, CA 91330, United States of America
| | - Siyuan Li
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- METU Center of Excellence in Biomaterials and Tissue Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Siyi Niu
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- Department of Biomedical Engineering, Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC 27101, United States of America
| | - RunRun Chen
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Shuyi Huang
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
| | - Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Payam Eliahoo
- Department of Biology, University of California, Irvine, CA 92697, United States of America
| | - Arthur Sun
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Danial Khorsandi
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Jinjoo Kim
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Jonathan Kelber
- Department of Biology, California State University, Northridge, CA 91330, United States of America
- Department of Integrative Biology, University of California, Berkeley, CA 94720, United States of America
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
| | - Han-Jun Kim
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Bingbing Li
- Terasaki Institute for Biomedical Innovation (TIBI), 1018 Westwood Blvd, Los Angeles, CA 90024, United States of America
- Autonomy Research Center for STEAHM (ARCS), California State University, Northridge, CA 91324, United States of America
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Luo S, Gan L, Luo Y, Zhang Z, Li L, Wang H, Li T, Chen Q, Huang Y, He J, Zhong L, Liu X, Wu P, Wang Y, Zhao Y, Zhang Z. Application of Molecular Nanoprobes in the Analysis of Differentially Expressed Genes and Prognostic Models of Primary Hepatocellular Carcinoma. J Biomed Nanotechnol 2021; 17:1020-1033. [PMID: 34167617 DOI: 10.1166/jbn.2021.3098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Analyzing hub genes related to tumorigenesis based on biological big data has recently become a hotspot in biomedicine. Nanoprobes, nanobodies and theranostic molecules targeting hub genes delivered by nanocarriers have been widely applied in tumor theranostics. Hepatocellular carcinoma (HCC) is one of the most common cancers, with a poor prognosis and high mortality. Identifying hub genes according to the gene expression levels and constructing prognostic signatures related to the onset and outcome of HCC will be of great significance. In this study, the expression profiles of HCC and normal tissue were obtained from the GEO database and analyzed by GEO₂R to identify DEGs. GO terms and KEGG pathways were enriched in DAVID software. The STRING database was consulted to find protein-protein interactions between proteins encoded by the DEGs, which were visualized by Cytoscape. Then, overall survival associated with the hub genes was calculated by the Kaplan-Meier plotter online tool, and verification of the results was carried out on TCGA samples and their corresponding clinical information. A total of 603 DEGs were obtained, of which 479 were upregulated and 124 were downregulated. PPI networks including 603 DEGs and 18 clusters were constructed, of which 7 clusters with MCODE score ≥3 and nodes ≥5 were selected. The 5 genes with the highest degrees of connectivity were identified as hub genes, and a prognostic model was constructed. The expression and prognostic potential of this model was validated on TCGA clinical data. In conclusion, a five-gene signature (TOP2A, PCNA, AURKA, CDC20, CCNB2) overexpressed inHCC was identified, and a prognostic model was constructed. This gene signature may act as a prognostic model for HCC and provide potential targets of nanotechnology.
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Affiliation(s)
- Shuang Luo
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Lu Gan
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Yiqun Luo
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Zhikun Zhang
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Lan Li
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Huixue Wang
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Tong Li
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Qiaoying Chen
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Yong Huang
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Jian He
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Liping Zhong
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Xiuli Liu
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Pan Wu
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Yong Wang
- Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, 150081, China
| | - Yongxiang Zhao
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
| | - Zhenghan Zhang
- National Center for International Research of Biotargeting Theranostics, Guangxi Key Laboratory of Biotargeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Biotargeting Theranostics, Guangxi Medical University, Nanning, 530021, China
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Ortiz-Delgado JB, Funes V, Sarasquete C. The organophosphate pesticide -OP- malathion inducing thyroidal disruptions and failures in the metamorphosis of the Senegalese sole, Solea senegalensis. BMC Vet Res 2019; 15:57. [PMID: 30744622 PMCID: PMC6371575 DOI: 10.1186/s12917-019-1786-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 01/16/2019] [Indexed: 12/14/2022] Open
Abstract
Background Organophosphate pesticides-OP-, like malathion, can alter the normal functioning of neuro-endocrine systems (e.g., hypothalamus-pituitary-thyroid-HPT- axis), and to interfere on the thyroidal homeostasis. Through direct interactions with thyroid receptors, an/or indirectly via up-stream signalling pathways, from the HPT axis (i.e., negative feedback regulation), malathion possess the ability to affect integrity of thyroidal follicular tissue, and it can also block or delay its hormonal functioning. This insecticide can alter the majority of the ontogenetic processes, inducing several deformities, and also provoking decreases in the growth and survival patterns. The present study has been performed to determine the sublethal effects of malathion during the first month of life of the Senegalese sole, Solea senegalensis, and it is mainly focused on the metamorphosis phase. Different transcript expression levels (i.e. thyroid receptors, matrix and bone -Gla-proteins) and immunohistochemical patterns (i.e. thyroid hormones, osteocalcin, cell proliferation) have been analysed during the most critical phases of the flatfish metamorphosis, that is, through differentiation of thyroid system and skeletal development, migration of the eye, and further adaptation to benthic behaviours. Results In early life stages of the Senegalese sole, the exposure to the highest concentration of malathion (6.25 μg/L) affected to the growth patterns, showing the exposed individuals, a reduction around 60 and 92% of the total length and the dry weigth, respectively. In paralell, a significant reduction of the thyroid follicles (i.e., size and number) it was also been recorded, in a dose-dependent way. Abnormal phenotypes induced in the exposed larvae, did not complete the process of metamorphosis, and displayed several morphological abnormalities and developmental disorders, which were mainly associated with the eye migration process, and with thyroidal and skeletal disorders (i.e., transcriptional and protein changes of thyroid hormones and receptors, and of matrix and bone Gla proteins distribution), that conduced to an inadequate adaptation to the benthic life. Conclusions In the Senegalese sole, the majority of the ontogenetic alterations induced by the exposure to malathion were mainly associated to the metamorphosis period, which is a thyroid-driven proccess. In fact, most crucial and transitional ontogenic events, appeared notably disturbed, for e.g., thyroid gland differentiation and functioning, migration of eye, skeletal development and benthonic behaviors.
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Affiliation(s)
- Juan B Ortiz-Delgado
- Instituto de Ciencias Marinas de Andalucía-ICMAN, CSIC Campus Universitario Río San Pedro, 11510, Puerto Real, Cádiz, Spain.
| | - Victoria Funes
- IFAPA, Centro el Toruño, Junta de Andalucía, Camino Tiro de Pichón s/n, 11500, El Puerto de Santa María, Cádiz, Spain
| | - Carmen Sarasquete
- Instituto de Ciencias Marinas de Andalucía-ICMAN, CSIC Campus Universitario Río San Pedro, 11510, Puerto Real, Cádiz, Spain
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Abstract
BACKGROUND Pancreatic cancer is one of the most aggressive human tumors and is virtually incurable. Its incidence in the United States has tripled in the past 50 years. The tumor is a frequent cause of cancer death in both men and women. The current treatment options are inadequate and probably reflect the fact that the etiologic factors and the pathogenesis of pancreatic cancer are unknown. METHODS The author reviewed recent studies describing some of the molecular alterations that may play a role in pancreatic carcinogenesis. RESULTS Most pancreatic tumors arise in the ductal epithelium. Cytogenetic abnormalities and alterations in proliferation, oncogenes and tumor suppressor genes, cell receptors, and growth factors are described. CONCLUSIONS Preliminary studies have implicated, among others, the insulin-like growth factor-1 receptor, Src, and Stat3 proteins in human pancreatic carcinogenesis. These molecules may represent important predictors of tumor behavior and targets of novel therapeutic modalities in human pancreatic cancer.
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Affiliation(s)
- D Coppola
- Interdisciplinary Oncology Program, Pathology Service, Moffitt Cancer Center & Research Institute, University of South Florida, Tampa, 33612, USA.
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Piattelli A, Fioroni M, Santinelli A, Rubini C. Expression of proliferating cell nuclear antigen in ameloblastomas and odontogenic cysts. Oral Oncol 1998; 34:408-12. [PMID: 9861350 DOI: 10.1016/s1368-8375(98)00027-x] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The identification of the proliferative activity in tumours may be useful to predict the biological behaviour of different lesions. Proliferating cell nuclear antigen (PCNA) has been used for the evaluation of the proliferative ability of many lesions. In this study 22 ameloblastomas (4 follicular, 5 plexiform, 4 acanthomatous, 5 unicystic, 4 recurrent), 12 odontogenic keratocysts (OKC), 8 dentigerous cysts (DC), and 12 radicular cysts (RC) were analysed. PCNA+ cells were present in all cyst types but the OKC contained the highest number of PCNA+ cells. In OKC the location of PCNA+ cells was mainly suprabasal. In ameloblastoma PCNA+ cells were located mainly in the peripheral portion of the tumour islands. Statistical analysis showed that ameloblastoma had higher PCNA+ cell counts than OKC (P < 0.0001); OKC had higher values than DC and RC (P < 0.0001). Recurrent ameloblastoma presented higher PCNA+ cell counts than other types of ameloblastoma, while unicystic ameloblastoma showed lower values than acanthomatous, plexiform and follicular ameloblastomas (in this latter case the difference was not statistically significant). These data could help to explain the different biological behaviour of these lesions.
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Mäkinen K, Eskelinen M, Lipponen P, Pasanen P, Nuutinen P, Alhava E. Argyrophilic nucleolar organizer regions may help the differential diagnostic distinction between chronic pancreatitis and pancreatic ductal adenocarcinoma. Scand J Gastroenterol 1994; 29:1029-33. [PMID: 7871369 DOI: 10.3109/00365529409094881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The aim of this study was to determine whether the number of argyrophilic nucleolar organizer regions (AgNORs) could be of diagnostic significance in differentiating between chronic pancreatitis and pancreatic ductal adenocarcinoma. METHODS The number of AgNORs was enumerated in biopsy specimens of normal pancreas, chronic pancreatitis, and pancreatic ductal adenocarcinoma. RESULTS The number of AgNORs was lower in patients with normal pancreas than in patients with chronic pancreatitis or pancreatic adenocarcinoma. In addition, the number of AgNORs was significantly lower in chronic pancreatitis than in pancreatic ductal adenocarcinoma (p < 0.001). CONCLUSIONS The diagnosis of pancreatic adenocarcinoma is usually clear. Difficulties can be encountered, however, in cases of chronic pancreatitis, specially when biopsy material is small. Our results suggest that the number of AgNORs may help in distinguishing between chronic pancreatitis and pancreatic ductal adenocarcinoma, especially in diagnostically difficult specimens.
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Affiliation(s)
- K Mäkinen
- Dept. of Surgery, University of Kuopio, Finland
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