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McMillan RH, Thomas CC. Racial Discrimination, Inflammation, Sleep, and Metabolic Syndrome From Adolescence to Young Adulthood. JAMA Netw Open 2024; 7:e245258. [PMID: 38635277 DOI: 10.1001/jamanetworkopen.2024.5258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Affiliation(s)
- Ross H McMillan
- Section of Gastroenterology, Hepatology & Nutrition, University of Chicago, Chicago, Illinois
| | - Celeste C Thomas
- Section of Endocrinology, Diabetes & Metabolism, University of Chicago, Chicago, Illinois
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Begum A, McMillan RH, Chang YT, Penchev VR, N.V. R, Maitra A, Goggins MG, Eshelman JR, Wolfgang CL, Rasheed ZA, Matsui W. Direct Interactions With Cancer-Associated Fibroblasts Lead to Enhanced Pancreatic Cancer Stem Cell Function. Pancreas 2019; 48:329-334. [PMID: 30747824 PMCID: PMC6411432 DOI: 10.1097/mpa.0000000000001249] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Cancer-associated fibroblasts (CAFs) play an important role in the progression of pancreatic ductal adenocarcinoma (PDAC) by promoting tumor cell migration and drug resistance. We determined the impact of CAFs on PDAC cancer stem cells (CSCs). METHODS Fibroblast cell lines from patients' tumors were cocultured with PDAC cells and examined for clonogenic growth and self-renewal using colony-forming assays and migration in vitro. Changes in the frequency of CSCs was determined by flow cytometry. The effect of integrin-focal adhesion kinase (FAK) signaling on CAF-mediated clonogenic growth was evaluated using short hairpin RNAs against β1 integrin and FAK as well as a small-molecule FAK inhibitor. RESULTS Cancer-associated fibroblasts enhanced PDAC clonogenic growth, self-renewal, and migration that was associated with an increase in the frequency of CSCs. These fibroblast cells were activated by PDAC cells and increased collagen synthesis resulting in FAK activation in PDAC cells. Knockdown of β1-integrin and FAK or the inhibition of FAK kinase activity in PDAC cells abrogated the impact of CAFs on clonogenic growth. CONCLUSION Therefore, CAFs enhance PDAC clonogenic growth, self-renewal, and the frequency of CSCs through type I collagen production that enhances integrin-FAK signaling in PDAC cells.
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Affiliation(s)
- Asma Begum
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ross H. McMillan
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Yu-Tai Chang
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Vesselin R. Penchev
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Rajeshkumar N.V.
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Anirban Maitra
- Department of Pathology, University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Michael G. Goggins
- Department of Pathology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - James R. Eshelman
- Department of Pathology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Christopher L. Wolfgang
- Department of Surgery, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Zeshaan A. Rasheed
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
| | - William Matsui
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD
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Penchev VR, Chang YT, Begum A, Ewachiw T, Gocke C, Li J, McMillan RH, Wang Q, Anders R, Marchionni L, Maitra A, Uren A, Rasheed Z, Matsui W. Ezrin Promotes Stem Cell Properties in Pancreatic Ductal Adenocarcinoma. Mol Cancer Res 2019; 17:929-936. [PMID: 30655325 DOI: 10.1158/1541-7786.mcr-18-0367] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 10/09/2018] [Accepted: 01/08/2019] [Indexed: 01/25/2023]
Abstract
Self-renewal maintains the long-term clonogenic growth that is required for cancer relapse and progression, but the cellular processes regulating this property are not fully understood. In many diseases, self-renewal is enhanced in cancer stem cells (CSC), and in pancreatic ductal adenocarcinoma (PDAC), CSCs are characterized by the surface expression of CD44. In addition to cell adhesion, CD44 impacts cell shape and morphology by modulating the actin cytoskeleton via Ezrin, a member of the Ezrin/Radixin/Moesin (ERM) family of linker proteins. We examined the expression of Ezrin in PDAC cells and found higher levels of both total and activated Ezrin in CSCs compared with bulk tumor cells. We also found that the knockdown of Ezrin in PDAC cells decreased clonogenic growth, self-renewal, cell migration, and CSC frequency in vitro as well as tumor initiation in vivo. These effects were associated with cytoskeletal changes that are similar to those occurring during the differentiation of normal stem cells, and the inhibition of actin remodeling reversed the impact of Ezrin loss. Finally, targeting Ezrin using a small-molecule inhibitor limited the self-renewal of clinically derived low-passage PDAC xenografts. Our findings demonstrate that Ezrin modulates CSCs properties and may represent a novel target for the treatment of PDAC. IMPLICATIONS: Our findings demonstrate that Ezrin modulates CSCs' properties and may represent a novel target for the treatment of PDAC.
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Affiliation(s)
- Vesselin R Penchev
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Yu-Tai Chang
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Asma Begum
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Theodore Ewachiw
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Christian Gocke
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Joey Li
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Ross H McMillan
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Qiuju Wang
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Robert Anders
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Luigi Marchionni
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Anirban Maitra
- Department of Pathology, University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Aykut Uren
- Department of Oncology, Lombardy Comprehensive Cancer Center, Georgetown University Medical Center, Washington, D.C
| | - Zeshaan Rasheed
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - William Matsui
- Department of Oncology, Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland.
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Bigland CH, McMillan RH. Tracing Of Outbreaks Of Pullorum In Turkeys In Alberta. Can J Comp Med Vet Sci 1959; 23:233-6. [PMID: 17649161 PMCID: PMC1582102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
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