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Elmi M, Dass JH, Dass CR. The Various Roles of PEDF in Cancer. Cancers (Basel) 2024; 16:510. [PMID: 38339261 PMCID: PMC10854708 DOI: 10.3390/cancers16030510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Pigment epithelium-derived factor (PEDF) is a natural immunomodulator, anti-inflammatory, anti-angiogenic, anti-tumour growth and anti-metastasis factor, which can enhance tumour response to PEDF but can also conversely have pro-cancerous effects. Inflammation is a major cause of cancer, and it has been proven that PEDF has anti-inflammatory properties. PEDF's functional activity can be investigated through measuring metastatic and metabolic biomarkers that will be discussed in this review.
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Affiliation(s)
- Mitra Elmi
- Curtin Medical School, Curtin University, Bentley, WA 6102, Australia; (M.E.); (J.H.D.)
- Curtin Health Innovation Research Institute, Curtin Medical School, Curtin University, Bentley, WA 6102, Australia
| | - Joshua H. Dass
- Curtin Medical School, Curtin University, Bentley, WA 6102, Australia; (M.E.); (J.H.D.)
- Sir Charles Gairdner Hospital, Nedlands, WA 6009, Australia
| | - Crispin R. Dass
- Curtin Medical School, Curtin University, Bentley, WA 6102, Australia; (M.E.); (J.H.D.)
- Curtin Health Innovation Research Institute, Curtin Medical School, Curtin University, Bentley, WA 6102, Australia
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Gil-Gas C, Sánchez-Díez M, Honrubia-Gómez P, Sánchez-Sánchez JL, Alvarez-Simón CB, Sabater S, Sánchez-Sánchez F, Ramírez-Castillejo C. Self-Renewal Inhibition in Breast Cancer Stem Cells: Moonlight Role of PEDF in Breast Cancer. Cancers (Basel) 2023; 15:5422. [PMID: 38001682 PMCID: PMC10670784 DOI: 10.3390/cancers15225422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Breast cancer is the leading cause of death among females in developed countries. Although the implementation of screening tests and the development of new therapies have increased the probability of remission, relapse rates remain high. Numerous studies have indicated the connection between cancer-initiating cells and slow cellular cycle cells, identified by their capacity to retain long labeling (LT+). In this study, we perform new assays showing how stem cell self-renewal modulating proteins, such as PEDF, can modify the properties, percentage of biomarker-expressing cells, and carcinogenicity of cancer stem cells. The PEDF signaling pathway could be a useful tool for controlling cancer stem cells' self-renewal and therefore control patient relapse, as PEDF enhances resistance in breast cancer patient cells' in vitro culture. We have designed a peptide consisting of the C-terminal part of this protein, which acts by blocking endogenous PEDF in cell culture assays. We demonstrate that it is possible to interfere with the self-renewal capacity of cancer stem cells, induce anoikis in vivo, and reduce resistance against docetaxel treatment in cancer patient cells in in vitro culture. We have also demonstrated that this modified PEDF protein produces a significant decrease in the percentage of expressed cancer stem cell markers.
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Affiliation(s)
- Carmen Gil-Gas
- Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (C.G.-G.); (P.H.-G.)
| | - Marta Sánchez-Díez
- HST Group, Department Biotechnology-BV, Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, 28040 Madrid, Spain;
| | - Paloma Honrubia-Gómez
- Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (C.G.-G.); (P.H.-G.)
| | - Jose Luis Sánchez-Sánchez
- Oncology Unit, Hospital General de Almansa, 02640 Albacete, Spain;
- Complejo Hospitalario Universitario de Albacete, 02006 Albacete, Spain
| | - Carmen B. Alvarez-Simón
- Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, 02006 Albacete, Spain; (C.G.-G.); (P.H.-G.)
- Complejo Hospitalario Universitario de Albacete, 02006 Albacete, Spain
| | - Sebastia Sabater
- Complejo Hospitalario Universitario de Albacete, 02006 Albacete, Spain
| | - Francisco Sánchez-Sánchez
- Laboratory of Medical Genetic, Faculty of Medicine, Instituto de Investigaciones en Discapacidades Neurológicas (IDINE), University of Castilla La-Mancha, 02006 Albacete, Spain
| | - Carmen Ramírez-Castillejo
- HST Group, Department Biotechnology-BV, Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, 28040 Madrid, Spain;
- Oncology Group, Instituto de Investigación Sanitaria San Carlos, 28040 Madrid, Spain
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