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Gunning J, Limesand K. Chronic Phenotypes Underlying Radiation-Induced Salivary Gland Dysfunction. J Dent Res 2024; 103:778-786. [PMID: 38808518 PMCID: PMC11457961 DOI: 10.1177/00220345241252396] [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] [Indexed: 05/30/2024] Open
Abstract
Head and neck cancer (HNC) is the sixth most diagnosed cancer, and treatment typically consists of surgical removal of the tumor followed by ionizing radiation (IR). While excellent at controlling tumor growth, IR often damages salivary glands due to their proximity to common tumor sites. Radiation damage to salivary glands results in loss of secretory function, causing severe and chronic reductions in salivary flow. This leads to the patient-reported sensation of dry mouth, termed xerostomia, which significantly reduces quality of life for HNC patients and survivors. The mechanisms underlying salivary gland damage remain elusive, and therefore, treatment options are scarce. Available therapies provide temporary symptom relief, but there is no standard of care for permanent restoration of function. There is a significant gap in understanding the chronic mechanistic responses to radiation as well as treatments that can be given in the months to years following cessation of treatment. HNC cases are steadily rising; particularly, the number of young patients diagnosed with nonfatal human papillomavirus + HNC continues to increase. The growing number of HNC diagnoses and improved prognoses results in more people living with xerostomia, which highlights the mounting need for restorative treatments. Mechanisms underlying chronic damage include decreases in acinar differentiation markers, increases in acinar cell proliferation, immune and inflammatory dysregulation, and metabolic changes including increases in amino acids and reductions in glycolysis and oxidative phosphorylation, fibrosis, and dysregulated neuronal responses. Currently, promising treatment options include adenoviral gene transfers and stem cell therapy. Thus, this review describes in depth known mechanisms contributing to chronic damage and discusses therapeutic advances in treating chronically damaged glands. Understanding the chronic response to radiation offers potential in development of new therapeutics to reverse salivary gland damage and improve the quality of life of HNC survivors.
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Affiliation(s)
- J.A. Gunning
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ, USA
| | - K.H. Limesand
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ, USA
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2
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Chowdhury P, Velalopoulou A, Verginadis II, Morcos G, Loo PE, Kim MM, Motlagh SAO, Shoniyozov K, Diffenderfer ES, Ocampo EA, Putt M, Assenmacher CA, Radaelli E, Lu J, Qin L, Liu H, Leli NM, Girdhani S, Denef N, Vander Stappen F, Cengel KA, Busch TM, Metz JM, Dong L, Lin A, Koumenis C. Proton FLASH Radiotherapy Ameliorates Radiation-induced Salivary Gland Dysfunction and Oral Mucositis and Increases Survival in a Mouse Model of Head and Neck Cancer. Mol Cancer Ther 2024; 23:877-889. [PMID: 38593239 PMCID: PMC11148539 DOI: 10.1158/1535-7163.mct-23-0663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/16/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Head and neck cancer radiotherapy often damages salivary glands and oral mucosa, severely negatively impacting patients' quality of life. The ability of FLASH proton radiotherapy (F-PRT) to decrease normal tissue toxicity while maintaining tumor control compared with standard proton radiotherapy (S-PRT) has been previously demonstrated for several tissues. However, its potential in ameliorating radiation-induced salivary gland dysfunction and oral mucositis and controlling orthotopic head and neck tumor growth has not been reported. The head and neck area of C57BL/6 mice was irradiated with a single dose of radiotherapy (ranging from 14-18 Gy) or a fractionated dose of 8 Gy × 3 of F-PRT (128 Gy/second) or S-PRT (0.95 Gy/second). Following irradiation, the mice were studied for radiation-induced xerostomia by measuring their salivary flow. Oral mucositis was analyzed by histopathologic examination. To determine the ability of F-PRT to control orthotopic head and neck tumors, tongue tumors were generated in the mice and then irradiated with either F-PRT or S-PRT. Mice treated with either a single dose or fractionated dose of F-PRT showed significantly improved survival than those irradiated with S-PRT. F-PRT-treated mice showed improvement in their salivary flow. S-PRT-irradiated mice demonstrated increased fibrosis in their tongue epithelium. F-PRT significantly increased the overall survival of the mice with orthotopic tumors compared with the S-PRT-treated mice. The demonstration that F-PRT decreases radiation-induced normal tissue toxicity without compromising tumor control, suggests that this modality could be useful for the clinical management of patients with head and neck cancer.
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Affiliation(s)
- Priyanka Chowdhury
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Anastasia Velalopoulou
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ioannis I Verginadis
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - George Morcos
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Phoebe E Loo
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Stanford University, Stanford, California
| | - Michele M Kim
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Seyyedeh Azar Oliaei Motlagh
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Khayrullo Shoniyozov
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Eric S Diffenderfer
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Emilio A Ocampo
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- University of California, Los Angeles, California
| | - Mary Putt
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Charles-Antoine Assenmacher
- Penn Vet comparative Pathology Core, Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Enrico Radaelli
- Penn Vet comparative Pathology Core, Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jiawei Lu
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ling Qin
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Hengxi Liu
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Nektaria Maria Leli
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Swati Girdhani
- IBA (Ion Beam Applications S.A.), Ottignies-Louvain-la-Neuve, Belgium
| | - Nicolas Denef
- IBA (Ion Beam Applications S.A.), Ottignies-Louvain-la-Neuve, Belgium
| | | | - Keith A Cengel
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Theresa M Busch
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - James M Metz
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Lei Dong
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Alexander Lin
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Constantinos Koumenis
- Department of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Zhu Z, Song J, Zhang C, Zhang J, Shan Z. Rapamycin alleviates irradiation-induced parotid injury by enhancing the whole gland homeostasis. Oral Dis 2024. [PMID: 38569076 DOI: 10.1111/odi.14948] [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: 11/29/2023] [Revised: 02/14/2024] [Accepted: 03/21/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVES Salivary gland injury is one of the most common complications of radiotherapy in head-and-neck cancers. This study investigated the mechanism by which rapamycin prevents irradiation (IR)-induced injury in the parotid glands. MATERIALS AND METHODS Miniature pigs either received (a) no treatment (NT), (b) IR in the right parotid gland for 5 consecutive days (IR), or intraperitoneal administration of rapamycin (Rap) 1 h prior to IR (IR + Rap). Tissues were collected at three distinct time points (24 h, 4 weeks, and 16 weeks) after IR. Histological analyses, western blot, and real-time reverse transcriptase-polymerase chain reaction were performed to explore the mechanisms of IR-induced injury in the parotid gland. RESULTS Rapamycin treatment maintained parotid salivary flow 16 weeks post-IR, preserved the number of acinar cells, and reduced parotid tissue fibrosis, as well as reduced apoptosis levels, decreased cleaved caspase-3 expression, and increased the Bcl-2/Bax ratio in the parotid glands. Autophagy marker LC3B was upregulated by rapamycin after IR, while P62 expression was downregulated. Rapamycin reduced the expression of pro-inflammatory factors and the mesenchymal tissue fibrosis following IR. CONCLUSIONS Rapamycin maintains gland homeostasis after IR by decreasing apoptosis, reducing the expression of pro-inflammatory factors, and enhancing autophagy.
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Affiliation(s)
- Zhao Zhu
- Outpatient Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Jiaxin Song
- Outpatient Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Chunmei Zhang
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Laboratory of Oral Health and Beijing Stomatological Hospital, Capital Medical University, Beijing, China
| | - Jing Zhang
- Outpatient Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Zhaochen Shan
- Outpatient Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
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Singh N, Ulmer B, Medapati MR, Zhang C, Schroth RJ, Ghavami S, Chelikani P. Bitter Taste Receptor T2R14 and Autophagy Flux in Gingival Epithelial Cells. Cells 2024; 13:531. [PMID: 38534375 DOI: 10.3390/cells13060531] [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: 01/17/2024] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 03/28/2024] Open
Abstract
Macroautophagy (hereafter autophagy) is a lysosomal degradation pathway that functions in nutrient recycling and as a mechanism of innate immunity. Previously, we reported a novel host-bacteria interaction between cariogenic S. mutans and bitter taste receptor (T2R14) in gingival epithelial cells (GECs), leading to an innate immune response. Further, S. mutans might be using the host immune system to inhibit other Gram-positive bacteria, such as S. aureus. To determine whether these bacteria exploit the autophagic machinery of GEC, it is first necessary to evaluate the role of T2R14 in modulating autophagic flux. So far, the role of T2R14 in the regulation of autophagy is not well characterized. Therefore, in this study, for the first time, we report that T2R14 downregulates autophagy flux in GECs, and T2R14 knockout increases acidic vacuoles. However, the treatments of GEC WT with a T2R14 agonist and antagonist did not lead to a significant change in acidic vacuole formation. Transmission electron microscopy morphometric results also suggested an increased number of autophagic vesicles in T2R14-knockout GEC. Further, our results suggest that S. mutans competence stimulating peptide CSP-1 showed robust intracellular calcium release and this effect is both T2R14- and autophagy protein 7-dependent. In this study, we provide the first evidence that T2R14 modulates autophagy flux in GEC. The results of the current study could help in identifying the impact of T2R in regulation of the immuno-microenvironment of GEC and subsequently oral health.
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Affiliation(s)
- Nisha Singh
- Manitoba Chemosensory Biology (MCSB) Research Group, Department of Oral Biology, University of Manitoba, 780 Bannatyne Avenue, Winnipeg, MB R3E 0W4, Canada
- Rady Faculty of Health Sciences, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ben Ulmer
- Manitoba Chemosensory Biology (MCSB) Research Group, Department of Oral Biology, University of Manitoba, 780 Bannatyne Avenue, Winnipeg, MB R3E 0W4, Canada
- Rady Faculty of Health Sciences, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Manoj Reddy Medapati
- Manitoba Chemosensory Biology (MCSB) Research Group, Department of Oral Biology, University of Manitoba, 780 Bannatyne Avenue, Winnipeg, MB R3E 0W4, Canada
- Rady Faculty of Health Sciences, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Christine Zhang
- University of Manitoba Flow Cytometry Core Facility, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Robert J Schroth
- Manitoba Chemosensory Biology (MCSB) Research Group, Department of Oral Biology, University of Manitoba, 780 Bannatyne Avenue, Winnipeg, MB R3E 0W4, Canada
- Rady Faculty of Health Sciences, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Saeid Ghavami
- Research Institute of Oncology and Hematology, Cancer Care Manitoba, University of Manitoba, Winnipeg, MB R3E 0V9, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0W2, Canada
| | - Prashen Chelikani
- Manitoba Chemosensory Biology (MCSB) Research Group, Department of Oral Biology, University of Manitoba, 780 Bannatyne Avenue, Winnipeg, MB R3E 0W4, Canada
- Rady Faculty of Health Sciences, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Department of Human Anatomy and Cell Science, University of Manitoba College of Medicine, Winnipeg, MB R3E 0W2, Canada
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Buss LG, Rheinheimer BA, Limesand KH. Radiation-induced changes in energy metabolism result in mitochondrial dysfunction in salivary glands. Sci Rep 2024; 14:845. [PMID: 38191641 PMCID: PMC10774336 DOI: 10.1038/s41598-023-50877-9] [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: 06/29/2023] [Accepted: 12/27/2023] [Indexed: 01/10/2024] Open
Abstract
Salivary glands are indirectly damaged during radiotherapy for head and neck cancer, resulting in acute and chronic hyposalivation. Current treatments for radiation-induced hyposalivation do not permanently restore function to the gland; therefore, more mechanistic understanding of the damage response is needed to identify therapeutic targets for lasting restoration. Energy metabolism reprogramming has been observed in cancer and wound healing models to provide necessary fuel for cell proliferation; however, there is limited understanding of alterations in energy metabolism reprogramming in tissues that fail to heal. We measured extracellular acidification and oxygen consumption rates, assessed mitochondrial DNA copy number, and tested fuel dependency of irradiated primary salivary acinar cells. Radiation treatment leads to increases in glycolytic flux, oxidative phosphorylation, and ATP production rate at acute and intermediate time points. In contrast, at chronic radiation time points there is a significant decrease in glycolytic flux, oxidative phosphorylation, and ATP production rate. Irradiated salivary glands exhibit significant decreases in spare respiratory capacity and increases in mitochondrial DNA copy number at days 5 and 30 post-treatment, suggesting a mitochondrial dysfunction phenotype. These results elucidate kinetic changes in energy metabolism reprogramming of irradiated salivary glands that may underscore the chronic loss of function phenotype.
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Affiliation(s)
- Lauren G Buss
- School of Nutritional Sciences and Wellness, University of Arizona, 1177 E 4th St, Shantz Building Room 421, Tucson, AZ, USA
| | - Brenna A Rheinheimer
- School of Nutritional Sciences and Wellness, University of Arizona, 1177 E 4th St, Shantz Building Room 421, Tucson, AZ, USA
| | - Kirsten H Limesand
- School of Nutritional Sciences and Wellness, University of Arizona, 1177 E 4th St, Shantz Building Room 421, Tucson, AZ, USA.
- University of Arizona Cancer Center, Tucson, AZ, USA.
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6
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Buss LG, Rheinheimer BA, Limesand KH. Radiation-Induced Changes in Energy Metabolism Result in Mitochondrial Dysfunction in Salivary Glands. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.27.568879. [PMID: 38077038 PMCID: PMC10705263 DOI: 10.1101/2023.11.27.568879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Salivary glands are indirectly damaged during radiotherapy for head and neck cancer, resulting in acute and chronic hyposalivation. Current treatments for radiation-induced hyposalivation do not permanently restore function to the gland; therefore, more mechanistic understanding of the damage response is needed to identify therapeutic targets for lasting restoration. Energy metabolism reprogramming has been observed in cancer and wound healing models to provide necessary fuel for cell proliferation; however, there is limited understanding of alterations in energy metabolism reprogramming in tissues that fail to heal. We measured extracellular acidification and oxygen consumption rates, assessed mitochondrial DNA copy number, and tested fuel dependency of irradiated primary salivary acinar cells. Radiation treatment leads to increases in glycolytic flux, oxidative phosphorylation, and ATP production rate at acute and intermediate time points. In contrast, at chronic radiation time points there is a significant decrease in glycolytic flux, oxidative phosphorylation, and ATP production rate. Irradiated salivary glands exhibit significant decreases in spare respiratory capacity and increases in mitochondrial DNA copy number at days 5 and 30 post-treatment, suggesting a mitochondrial dysfunction phenotype. These results elucidate kinetic changes in energy metabolism reprogramming of irradiated salivary glands that may underscore the chronic loss of function phenotype.
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7
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Marinkovic M, Tran ON, Wang H, Abdul-Azees P, Dean DD, Chen XD, Yeh CK. Extracellular matrix turnover in salivary gland disorders and regenerative therapies: Obstacles and opportunities. J Oral Biol Craniofac Res 2023; 13:693-703. [PMID: 37719063 PMCID: PMC10502366 DOI: 10.1016/j.jobcr.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 08/28/2023] [Indexed: 09/19/2023] Open
Abstract
Salivary gland (SG) extracellular matrix (ECM) has a major influence on tissue development, homeostasis, and tissue regeneration after injury. During aging, disease, and physical insult, normal remodeling of the SG microenvironment (i.e. ECM) becomes dysregulated, leading to alterations in matrix composition which disrupt tissue architecture/structure, alter cell activity, and negatively impact gland function. Matrix metalloproteinases (MMPs) are a large and diverse family of metalloendopeptidases which play a major role in matrix degradation and are intimately involved in regulating development and cell function; dysregulation of these enzymes leads to the production of a fibrotic matrix. In the SG this altered fibrotic ECM (or cell microenvironment) negatively impacts normal cell function and the effectiveness of gene and stem cell therapies which serve as a foundation for many SG regenerative therapies. For this reason, prospective regenerative strategies should prioritize the maintenance and/or restoration of a healthy SG ECM. Mesenchymal stem cells (MSCs) have great potential for mitigating damage to the SG microenvironment by ameliorating inflammation, reducing fibrosis, and repairing the damaged milieu of extracellular regulatory cues, including the matrix. This review addresses our current understanding of the impact of aging and disease on the SG microenvironment and suggests critical deficiencies and opportunities in ECM-targeted therapeutic interventions.
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Affiliation(s)
- Milos Marinkovic
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, 78229-4404, USA
| | - Olivia N. Tran
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
| | - Hanzhou Wang
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
| | - Parveez Abdul-Azees
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, 78229-4404, USA
| | - David D. Dean
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Xiao-Dong Chen
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, 78229-4404, USA
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Chih-Ko Yeh
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229-3900, USA
- Geriatric Research, Education and Clinical Center, South Texas Veterans Health Care System, San Antonio, TX, 78229-4404, USA
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8
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Marinkovic M, Tran ON, Wang H, Abdul-Azees P, Dean DD, Chen XD, Yeh CK. Autologous mesenchymal stem cells offer a new paradigm for salivary gland regeneration. Int J Oral Sci 2023; 15:18. [PMID: 37165024 PMCID: PMC10172302 DOI: 10.1038/s41368-023-00224-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 02/20/2023] [Accepted: 03/29/2023] [Indexed: 05/12/2023] Open
Abstract
Salivary gland (SG) dysfunction, due to radiotherapy, disease, or aging, is a clinical manifestation that has the potential to cause severe oral and/or systemic diseases and compromise quality of life. Currently, the standard-of-care for this condition remains palliative. A variety of approaches have been employed to restore saliva production, but they have largely failed due to damage to both secretory cells and the extracellular matrix (niche). Transplantation of allogeneic cells from healthy donors has been suggested as a potential solution, but no definitive population of SG stem cells, capable of regenerating the gland, has been identified. Alternatively, mesenchymal stem cells (MSCs) are abundant, well characterized, and during SG development/homeostasis engage in signaling crosstalk with the SG epithelium. Further, the trans-differentiation potential of these cells and their ability to regenerate SG tissues have been demonstrated. However, recent findings suggest that the "immuno-privileged" status of allogeneic adult MSCs may not reflect their status post-transplantation. In contrast, autologous MSCs can be recovered from healthy tissues and do not present a challenge to the recipient's immune system. With recent advances in our ability to expand MSCs in vitro on tissue-specific matrices, autologous MSCs may offer a new therapeutic paradigm for restoration of SG function.
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Affiliation(s)
- Milos Marinkovic
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, USA
| | - Olivia N Tran
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Hanzhou Wang
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Parveez Abdul-Azees
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, USA
| | - David D Dean
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA
| | - Xiao-Dong Chen
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- Research Service, South Texas Veterans Health Care System, San Antonio, TX, USA.
- Department of Biomedical Engineering, University of Texas at San Antonio, San Antonio, TX, USA.
| | - Chih-Ko Yeh
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
- Geriatric Research, Education and Clinical Center, South Texas Veterans Health Care System, San Antonio, TX, USA.
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9
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Meyer R, Gilman K, Rheinheimer B, Meeks L, Limesand K. AMPK Activation Restores Salivary Function Following Radiation Treatment. J Dent Res 2023; 102:546-554. [PMID: 36726289 PMCID: PMC10249004 DOI: 10.1177/00220345221148983] [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] [Indexed: 02/03/2023] Open
Abstract
Head and neck cancers represent a significant portion of cancer diagnoses, with head and neck cancer incidence increasing in some parts of the world. Typical treatment of early-stage head and neck cancers includes either surgery or radiotherapy; however, advanced cases often require surgery followed by radiation and chemotherapy. Salivary gland damage following radiotherapy leads to severe and chronic hypofunction with decreased salivary output, xerostomia, impaired ability to chew and swallow, increased risk of developing oral mucositis, and malnutrition. There is currently no standard of care for radiation-induced salivary gland dysfunction, and treatment is often limited to palliative treatment that provides only temporary relief. Adenosine monophosphate (AMP)-activated protein kinase (AMPK) is an enzyme that activates catabolic processes and has been shown to influence the cell cycle, proliferation, and autophagy. In the present study, we found that radiation (IR) treatment decreases tissue levels of phosphorylated AMPK following radiation and decreases intracellular NAD+ and AMP while increasing intracellular adenosine triphosphate. Furthermore, expression of sirtuin 1 (SIRT1) and nicotinamide phosphoribosyl transferase (NAMPT) was lower 5 d following IR. Treatment with AMPK activators, 5-aminoimidazole-4-carboxamide ribonucleotide (AICAR) and metformin, attenuated compensatory proliferation (days 6, 7, and 30) following IR and reversed chronic (day 30) salivary gland dysfunction post-IR. In addition, treatment with metformin or AICAR increased markers of apical/basolateral polarity (phosphorylated aPKCζT560-positive area) and differentiation (amylase-positive area) within irradiated parotid glands to levels similar to untreated controls. Taken together, these data suggest that AMPK may be a novel therapeutic target for treatment of radiation-induced salivary damage.
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Affiliation(s)
- R.K. Meyer
- School of Nutritional Sciences and Wellness,
University of Arizona, Tucson, AZ, USA
| | - K.E. Gilman
- School of Nutritional Sciences and Wellness,
University of Arizona, Tucson, AZ, USA
| | - B.A. Rheinheimer
- School of Nutritional Sciences and Wellness,
University of Arizona, Tucson, AZ, USA
| | - L. Meeks
- School of Nutritional Sciences and Wellness,
University of Arizona, Tucson, AZ, USA
| | - K.H. Limesand
- School of Nutritional Sciences and Wellness,
University of Arizona, Tucson, AZ, USA
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10
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Liu Y, Liu Z, Hu L, He L, Yang L, Qin Z, Xie Y, Peng X, Dai L. Function of stem cells in radiation-induced damage. Int J Radiat Biol 2023; 99:1483-1494. [PMID: 36912588 DOI: 10.1080/09553002.2023.2188935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023]
Abstract
PURPOSE The aim of this review is to discuss previous studies on the function of stem cells in radiation-induced damage, and the factors affecting these processes, in the hope of improving our understanding of the different stem cells and the communication networks surrounding them. This is essential for the development of effective stem cell-based therapies to regenerate or replace normal tissues damaged by radiation. CONCLUSION In salivary glands, senescence-associated cytokines and inflammation-associated cells have a greater effect on stem cells. In the intestinal glands, Paneth cells strongly affect stem cell-mediated tissue regeneration after radiation treatment. In the pancreas, β-cells as well as protein C receptor positive (Procr) cells are expected to be key cells in the treatment of diabetes. In the bone marrow, a variety of cytokines such as CXC-chemokine ligand 12 (CXCL12) and stem cell factor (SCF), contribute to the functional recovery of hematopoietic stem cells after irradiation.
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Affiliation(s)
- Yingtong Liu
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, and Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Zheran Liu
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Liqiang Hu
- West China-California Research Center for Predictive Intervention Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Ling He
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lianlian Yang
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Zijian Qin
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yuping Xie
- Department of Oncology, Chengdu First People's Hospital, Chengdu, Sichuan, China
| | - Xingchen Peng
- Department of Biotherapy, Cancer Center, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Lei Dai
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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11
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Uchida H, Ingalls MH, Maruyama EO, Johnston CJ, Hernady E, Faustoferri RC, Ovitt CE. Short-term and bystander effects of radiation on murine submandibular glands. Dis Model Mech 2022; 15:dmm049570. [PMID: 36263624 PMCID: PMC9683099 DOI: 10.1242/dmm.049570] [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: 03/21/2022] [Accepted: 10/13/2022] [Indexed: 11/20/2022] Open
Abstract
Many patients treated for head and neck cancers experience salivary gland hypofunction due to radiation damage. Understanding the mechanisms of cellular damage induced by radiation treatment is important in order to design methods of radioprotection. In addition, it is crucial to recognize the indirect effects of irradiation and the systemic responses that may alter saliva secretion. In this study, radiation was delivered to murine submandibular glands (SMGs) bilaterally, using a 137Cs gamma ray irradiator, or unilaterally, using a small-animal radiation research platform (SARRP). Analysis at 3, 24 and 48 h showed dynamic changes in mRNA and protein expression in SMGs irradiated bilaterally. Unilateral irradiation using the SARRP caused similar changes in the irradiated SMGs, as well as significant off-target, bystander effects in the non-irradiated contralateral SMGs.
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Affiliation(s)
- Hitoshi Uchida
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Matthew H. Ingalls
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Eri O. Maruyama
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Carl J. Johnston
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Eric Hernady
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Roberta C. Faustoferri
- Center for Oral Biology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Catherine E. Ovitt
- Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642USA
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12
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Chibly AM, Aure MH, Patel VN, Hoffman MP. Salivary gland function, development, and regeneration. Physiol Rev 2022; 102:1495-1552. [PMID: 35343828 PMCID: PMC9126227 DOI: 10.1152/physrev.00015.2021] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 11/27/2021] [Accepted: 03/17/2022] [Indexed: 02/08/2023] Open
Abstract
Salivary glands produce and secrete saliva, which is essential for maintaining oral health and overall health. Understanding both the unique structure and physiological function of salivary glands, as well as how they are affected by disease and injury, will direct the development of therapy to repair and regenerate them. Significant recent advances, particularly in the OMICS field, increase our understanding of how salivary glands develop at the cellular, molecular, and genetic levels: the signaling pathways involved, the dynamics of progenitor cell lineages in development, homeostasis, and regeneration, and the role of the extracellular matrix microenvironment. These provide a template for cell and gene therapies as well as bioengineering approaches to repair or regenerate salivary function.
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Affiliation(s)
- Alejandro M Chibly
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
| | - Marit H Aure
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
| | - Vaishali N Patel
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
| | - Matthew P Hoffman
- Matrix and Morphogenesis Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland
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13
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Suzuki A, Iwaya C, Ogata K, Yoshioka H, Shim J, Tanida I, Komatsu M, Tada N, Iwata J. Impaired GATE16-mediated exocytosis in exocrine tissues causes Sjögren's syndrome-like exocrinopathy. Cell Mol Life Sci 2022; 79:307. [PMID: 35593968 PMCID: PMC11071900 DOI: 10.1007/s00018-022-04334-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/03/2022]
Abstract
Sjögren's syndrome (SjS) is a chronic autoimmune disease characterized by immune cell infiltration of the exocrine glands, mainly the salivary and lacrimal glands. Despite recent advances in the clinical and mechanistic characterization of the disease, its etiology remains largely unknown. Here, we report that mice with a deficiency for either Atg7 or Atg3, which are enzymes involved in the ubiquitin modification pathway, in the salivary glands exhibit a SjS-like phenotype, characterized by immune cell infiltration with autoantibody detection, acinar cell death, and dry mouth. Prior to the onset of the SjS-like phenotype in these null mice, we detected an accumulation of secretory vesicles in the acinar cells of the salivary glands and found that GATE16, an uncharacterized autophagy-related molecule activated by ATG7 (E1-like enzyme) and ATG3 (E2-like enzyme), was highly expressed in these cells. Notably, GATE16 was activated by isoproterenol, an exocytosis inducer, and localized on the secretory vesicles in the acinar cells of the salivary glands. Failure to activate GATE16 was correlated with exocytosis defects in the acinar cells of the salivary glands in Atg7 and Atg3 cKO mice. Taken together, our results show that GATE16 activation regulated by the autophagic machinery is crucial for exocytosis and that defects in this pathway cause SjS.
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Affiliation(s)
- Akiko Suzuki
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
| | - Chihiro Iwaya
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
| | - Kenichi Ogata
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
| | - Hiroki Yoshioka
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
| | - Junbo Shim
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
| | - Isei Tanida
- Department of Cell Biology and Neuroscience, Juntendo University Graduate School of Medicine, Tokyo, 113-8431, Japan
| | - Masaaki Komatsu
- Department of Organ and Cell Physiology, Juntendo University Graduate School of Medicine, Tokyo, 113-8431, Japan
| | - Norihiro Tada
- Division of Genome Research, Research Institute for Diseases of Old Ages, Juntendo University School of Medicine, Tokyo, 113-8431, Japan
| | - Junichi Iwata
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA.
- Center for Craniofacial Research, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA.
- Pediatric Research Center, School of Medicine, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, 77030, USA.
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14
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Celia AI, Colafrancesco S, Barbati C, Alessandri C, Conti F. Autophagy in Rheumatic Diseases: Role in the Pathogenesis and Therapeutic Approaches. Cells 2022; 11:cells11081359. [PMID: 35456038 PMCID: PMC9025357 DOI: 10.3390/cells11081359] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 11/23/2022] Open
Abstract
Autophagy is a lysosomal pathway for the degradation of damaged proteins and intracellular components that promotes cell survival under specific conditions. Apoptosis is, in contrast, a critical programmed cell death mechanism, and the relationship between these two processes influences cell fate. Recent evidence suggests that autophagy and apoptosis are involved in the self-tolerance promotion and in the regulatory mechanisms contributing to disease susceptibility and immune regulation in rheumatic diseases. The aim of this review is to discuss how the balance between autophagy and apoptosis may be dysregulated in multiple rheumatic diseases and to dissect the role of autophagy in the pathogenesis of rheumatoid arthritis, systemic lupus erythematosus, and Sjögren’s syndrome. Furthermore, to discuss the potential capacity of currently used disease-modifying antirheumatic drugs (DMARDs) to target and modulate autophagic processes.
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15
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Asseri SM, Elsherbiny NM, El-Sherbiny M, Sherif IO, Alsamman AM, Maysarah NM, Elsherbini AM. Glycyrrhizic acid ameliorates submandibular gland oxidative stress, autophagy and vascular dysfunction in rat model of type 1 diabetes. Sci Rep 2022; 12:725. [PMID: 35031620 PMCID: PMC8760281 DOI: 10.1038/s41598-021-04594-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 12/15/2021] [Indexed: 02/08/2023] Open
Abstract
The burden of diabetes mellitus (DM) and associated complications is increasing worldwide, affecting many organ functionalities including submandibular glands (SMG). The present study aims to investigate the potential ameliorative effect of glycyrrhizic acid (GA) on diabetes-induced SMG damage. Experimental evaluation of GA treatment was conducted on a rat model of type I diabetes. Animals were assigned to three groups; control, diabetic and GA treated diabetic groups. After 8 weeks, the SMG was processed for assessment of oxidative stress markers, autophagy related proteins; LC3, Beclin-1 and P62, vascular regulator ET-1, aquaporins (AQPs 1.4 and 5), SIRT1 protein expressions in addition to LC3 and AQP5 mRNA expressions. Also, parenchymal structures of the SMG were examined. GA alleviated the diabetes-induced SMG damage via restoring the SMG levels of oxidative stress markers and ET-1 almost near to the normal levels most probably via regulation of SIRT1, AQPs and accordingly LC-3, P62 and Beclin-1levels. GA could be a promising candidate for the treatment of diabetes-induced SMG damage via regulating oxidative stress, autophagy and angiogenesis.
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Affiliation(s)
- Saad Mohamed Asseri
- Department of Clinical Medical Sciences, College of Medicine, AlMaarefa University, P.O. Box 71666, Riyadh, Saudi Arabia
| | - Nehal M Elsherbiny
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, 35516, Egypt.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk, 71491, Saudi Arabia.
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, 11597, AlMaarefa University, Riyadh, P.O. Box 71666, Saudi Arabia
- Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Iman O Sherif
- Emergency Hospital, Faculty of Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Alsamman M Alsamman
- African Genome Center, Mohammed VI Polytechnic University, Ben Guerir, Morocco
- Agricultural Genetic Engineering Research Institute, PO Box 12619, Giza, Egypt
| | - Nadia M Maysarah
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, Saudi Arabia
| | - Amira M Elsherbini
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura, 35516, Egypt.
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16
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Colafrancesco S, Barbati C, Priori R, Putro E, Giardina F, Gattamelata A, Monosi B, Colasanti T, Celia AI, Cerbelli B, Giordano C, Scarpa S, Fusconi M, Cavalli G, Berardicurti O, Gandolfo S, Nayar S, Barone F, Giacomelli R, De Vita S, Alessandri C, Conti F. Maladaptive autophagy in the pathogenesis of autoimmune epithelitis in Sjӧgren's Syndrome. Arthritis Rheumatol 2021; 74:654-664. [PMID: 34748286 DOI: 10.1002/art.42018] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/06/2021] [Accepted: 11/02/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVE Salivary gland epithelial cells (SGECs) are key cellular drivers in the pathogenesis of primary Sjӧgren's Syndrome (pSS); however, the mechanisms sustaining SGECs activation in pSS remain undetermined. The aim of this study is to determine the role of autophagy in the survival and activation of SGECs in pSS. METHODS Primary SGECs isolated from minor salivary glands (SG) of patients with pSS or sicca syndrome were evaluated by flow-cytometry, immunoblotting, and immunofluorescence to assess autophagy (autophagic-flux, LC3IIB, p62, LC3B+/LAMP1+ staining), apoptosis (annexin V/PI, Caspase-3) and activation (ICAM, VCAM). Focus score and germinal centers presence was assessed in SG from the same patients to correlate with histological severity. Human salivary gland (HSG) cells were stimulated in vitro with PBMCs and serum from pSS patients in the presence or absence of autophagy inhibitors to determine changes in autophagy and epithelial cell activation. RESULTS SGECs from pSS patients (n=24) exhibited increased autophagy (autophagic-flux p=0.001; LC3IIB p=0.02; p62 p=0.064; LC3IIB/LAMP1+ staining), increased expression of anti-apoptotic molecules (Bcl2 p=0.006), and reduced apoptosis (Annexin-V/PI p=0.002, Caspase-3 p=0.057) compared to sicca (n=16). Autophagy correlated with histologic disease severity. In vitro experiments on HSG cells stimulated with serum and PBMCs from pSS patients confirmed activation of autophagy and expression of adhesion molecules, which was reverted upon pharmacologic inhibition of autophagy. CONCLUSIONS In pSS SGECs, inflammation induces autophagy and pro-survival mechanisms, which promote SGEC activation and mirror histological severity. These findings indicate that autophagy is a central contributor to the pathogenesis of pSS and a new therapeutic target.
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Affiliation(s)
- S Colafrancesco
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - C Barbati
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - R Priori
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy.,Saint Camillus International University of Health Science, UniCamillus, Rome, Italy
| | - E Putro
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - F Giardina
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - A Gattamelata
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - B Monosi
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - T Colasanti
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - A I Celia
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - B Cerbelli
- Department of Radiological, oncological and anatomo-pathological sciences, Sapienza University, Rome, Italy
| | - C Giordano
- Department of Radiological, oncological and anatomo-pathological sciences, Sapienza University, Rome, Italy
| | - S Scarpa
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - M Fusconi
- Department Organs of Sense, Sapienza University of Rome, Italy
| | - G Cavalli
- Unit of Immunology, Rheumatology, Allergy, and Rare Diseases, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy
| | - O Berardicurti
- Division of Rheumatology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - S Gandolfo
- Clinic of Rheumatology, DAME, University Hospital of Udine, Udine, Italy
| | - S Nayar
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - F Barone
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - R Giacomelli
- Unit of Allergology, Immunology and Rheumatology, Department of Medicine, University Campus Bio-Medico, Rome, Italy
| | - S De Vita
- Clinic of Rheumatology, DAME, University Hospital of Udine, Udine, Italy
| | - C Alessandri
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - F Conti
- Division of Rheumatology, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University, Rome, Italy
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17
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Orhon I, Rocchi C, Villarejo-Zori B, Serrano Martinez P, Baanstra M, Brouwer U, Boya P, Coppes R, Reggiori F. Autophagy induction during stem cell activation plays a key role in salivary gland self-renewal. Autophagy 2021; 18:293-308. [PMID: 34009100 PMCID: PMC8942426 DOI: 10.1080/15548627.2021.1924036] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Relatively quiescent tissues like salivary glands (SGs) respond to stimuli such as injury to expand, replace and regenerate. Resident stem/progenitor cells are key in this process because, upon activation, they possess the ability to self-renew. Macroautophagy/autophagy contributes to and regulates differentiation in adult tissues, but an important question is whether this pathway promotes stem cell self-renewal in tissues. We took advantage of a 3D organoid system that allows assessing the self-renewal of mouse SGs stem cells (SGSCs). We found that autophagy in dormant SGSCs has slower flux than self-renewing SGSCs. Importantly, autophagy enhancement upon SGSCs activation is a self-renewal feature in 3D organoid cultures and SGs regenerating in vivo. Accordingly, autophagy ablation in SGSCs inhibits self-renewal whereas pharmacological stimulation promotes self-renewal of mouse and human SGSCs. Thus, autophagy is a key pathway for self-renewal activation in low proliferative adult tissues, and its pharmacological manipulation has the potential to promote tissue regeneration.
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Affiliation(s)
- Idil Orhon
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Cecilia Rocchi
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Beatriz Villarejo-Zori
- Department of Cellular and Molecular Biology, Centro De Investigaciones Biológicas Margarita Salas, CSIC, Madrid, Spain
| | - Paola Serrano Martinez
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mirjam Baanstra
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Uilke Brouwer
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Patricia Boya
- Department of Cellular and Molecular Biology, Centro De Investigaciones Biológicas Margarita Salas, CSIC, Madrid, Spain
| | - Rob Coppes
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Fulvio Reggiori
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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18
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Serrano Martinez P, Giuranno L, Vooijs M, Coppes RP. The Radiation-Induced Regenerative Response of Adult Tissue-Specific Stem Cells: Models and Signaling Pathways. Cancers (Basel) 2021; 13:cancers13040855. [PMID: 33670536 PMCID: PMC7921940 DOI: 10.3390/cancers13040855] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/10/2021] [Accepted: 02/14/2021] [Indexed: 02/07/2023] Open
Abstract
Radiotherapy is involved in the treatment of many cancers, but damage induced to the surrounding normal tissue is often inevitable. Evidence suggests that the maintenance of homeostasis and regeneration of the normal tissue is driven by specific adult tissue stem/progenitor cells. These tasks involve the input from several signaling pathways. Irradiation also targets these stem/progenitor cells, triggering a cellular response aimed at achieving tissue regeneration. Here we discuss the currently used in vitro and in vivo models and the involved specific tissue stem/progenitor cell signaling pathways to study the response to irradiation. The combination of the use of complex in vitro models that offer high in vivo resemblance and lineage tracing models, which address organ complexity constitute potential tools for the study of the stem/progenitor cellular response post-irradiation. The Notch, Wnt, Hippo, Hedgehog, and autophagy signaling pathways have been found as crucial for driving stem/progenitor radiation-induced tissue regeneration. We review how these signaling pathways drive the response of solid tissue-specific stem/progenitor cells to radiotherapy and the used models to address this.
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Affiliation(s)
- Paola Serrano Martinez
- Department of Biomedical Sciences of Cells and Systems-Section Molecular Cell Biology, University of Groningen, University Medical Center Groningen, 9713 AV Groningen, The Netherlands;
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands
| | - Lorena Giuranno
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre, P.O. Box 616, 6200 MD Maastricht, The Netherlands;
| | - Marc Vooijs
- Department of Radiation Oncology (Maastro), GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre, P.O. Box 616, 6200 MD Maastricht, The Netherlands;
- Correspondence: (M.V.); (R.P.C.)
| | - Robert P. Coppes
- Department of Biomedical Sciences of Cells and Systems-Section Molecular Cell Biology, University of Groningen, University Medical Center Groningen, 9713 AV Groningen, The Netherlands;
- Department of Radiation Oncology, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands
- Correspondence: (M.V.); (R.P.C.)
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19
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Ma S, Jin Z, Liu Y, Liu L, Feng H, Li P, Tian Z, Ren M, Liu X. Furazolidone Increases Survival of Mice Exposed to Lethal Total Body Irradiation through the Antiapoptosis and Antiautophagy Mechanism. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6610726. [PMID: 33613823 PMCID: PMC7878070 DOI: 10.1155/2021/6610726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/06/2021] [Accepted: 01/21/2021] [Indexed: 11/24/2022]
Abstract
Exposure to total body irradiation (TBI) causes dose- and tissue-specific lethality. However, there are few effective and nontoxic radiation countermeasures for the radiation injury. In the current study, mice were pretreated with a traditional antimicrobial agent, FZD, before TBI; the protective effects of FZD on radiation injury were evaluated by using parameters such as the spleen index and thymus index, immunohistochemical staining of intestinal tissue, and frequency of micronuclei in polychromatophilic erythrocytes of bone marrow. The intestinal epithelial cell line IEC-6 was used to investigate the underlying mechanisms. Our results indicated that FZD administration significantly improved the survival of lethal dose-irradiated mice, decreased the number of micronuclei, upregulated the number of leukocytes and immune organ indices, and restored intestinal integrity in mice after TBI. TUNEL and western blot showed that FZD protected intestinal tissue by downregulating radiation-induced apoptosis and autophagy. Meanwhile, FZD protected IEC-6 cells from radiation-induced cell death by inhibiting apoptosis and autophagy. To sum up, FZD protected against radiation-induced cell death both in vitro and in vivo through antiapoptosis and antiautophagy mechanisms.
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Affiliation(s)
- Shumei Ma
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Zhao Jin
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200092, China
| | - Yi Liu
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lin Liu
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Hao Feng
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Ping Li
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Zhujun Tian
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Minghua Ren
- Department of Urinary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China
| | - Xiaodong Liu
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
- Zhejiang Provincial Key Laboratory of Watershed Science and Health, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
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20
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Li SS, Wu CZ, Qiao XH, Li CJ, Li LJ. Advances on mechanism and treatment of salivary gland in radiation injury. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2021; 39:99-104. [PMID: 33723944 PMCID: PMC7905410 DOI: 10.7518/hxkq.2021.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/28/2020] [Indexed: 02/08/2023]
Abstract
Oral squamous cell carcinoma (OSCC) is the most frequent tumour in head and neck malignant. The current treatment is mainly based on surgery therapy, radiation therapy and chemical therapy. Meanwhile, there are many a defect in the treatment. For example, there are many defects in radiotherapy. Radioactive salivatitis is the most common. In addition, there are a series of changes such as dry mouth, oral mucositis, rampant dental caries, and radioactive osteomyelitis of jaw, which cause swallowing, chewing problems, and taste dysfunction. Currently, the research on radioactive salivatitis is progressing rapidly, but its mechanism is more complication. This paper review aims to summarize the research progress in this field.
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Affiliation(s)
- Shen-Sui Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chen-Zhou Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xiang-He Qiao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chun-Jie Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Long-Jiang Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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21
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Koustas E, Sarantis P, Theodorakidou M, Karamouzis MV, Theocharis S. Autophagy and salivary gland cancer: A putative target for salivary gland tumors. Tumour Biol 2020; 42:1010428320980568. [PMID: 33319639 DOI: 10.1177/1010428320980568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Salivary gland carcinomas are a group of heterogeneous tumors of different histological subtypes, presenting relatively low incidence but the entire variable of types. Although novel treatment options for salivary gland carcinomas patients' outcomes have improved, the treatment of this type of cancer is still not standardized. In addition, a significant number of patients, with a lack of optimal treatment strategies, have reduced survival. In the last two decades, a plethora of evidence pointed to the importance of autophagy, an essential catabolic process of cytoplasmatic component digestion, in cancer. In vitro and in vivo studies highlight the importance of autophagy in salivary gland carcinomas development as a tumor suppressor or promoter mechanism. Despite the potential of autophagy in salivary gland carcinomas development, no therapies are currently available that specifically focus on autophagy modulation in salivary gland carcinomas. In this review, we summarize current knowledge and clinical trials in regard to the interplay between autophagy and the development of salivary gland carcinomas. Autophagy manipulation may be a putative therapeutic strategy for salivary gland carcinomas patients.
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Affiliation(s)
- Evangelos Koustas
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,Molecular Oncology Unit, Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Sarantis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,Molecular Oncology Unit, Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Margarita Theodorakidou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Michalis V Karamouzis
- Molecular Oncology Unit, Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,First Department of Internal Medicine, Laiko Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Stamatios Theocharis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,Laboratory of Experimental Surgery and Surgical Research "N.S.Christeas," Medical School, National and Kapodistrian University of Athens, Athens, Greece
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22
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Radiation-Induced Salivary Gland Dysfunction: Mechanisms, Therapeutics and Future Directions. J Clin Med 2020; 9:jcm9124095. [PMID: 33353023 PMCID: PMC7767137 DOI: 10.3390/jcm9124095] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 12/14/2022] Open
Abstract
Salivary glands sustain collateral damage following radiotherapy (RT) to treat cancers of the head and neck, leading to complications, including mucositis, xerostomia and hyposalivation. Despite salivary gland-sparing techniques and modified dosing strategies, long-term hypofunction remains a significant problem. Current therapeutic interventions provide temporary symptom relief, but do not address irreversible glandular damage. In this review, we summarize the current understanding of mechanisms involved in RT-induced hyposalivation and provide a framework for future mechanistic studies. One glaring gap in published studies investigating RT-induced mechanisms of salivary gland dysfunction concerns the effect of irradiation on adjacent non-irradiated tissue via paracrine, autocrine and direct cell-cell interactions, coined the bystander effect in other models of RT-induced damage. We hypothesize that purinergic receptor signaling involving P2 nucleotide receptors may play a key role in mediating the bystander effect. We also discuss promising new therapeutic approaches to prevent salivary gland damage due to RT.
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23
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Wong WY, Gilman K, Limesand KH. Yap activation in irradiated parotid salivary glands is regulated by ROCK activity. PLoS One 2020; 15:e0232921. [PMID: 33151927 PMCID: PMC7644026 DOI: 10.1371/journal.pone.0232921] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 10/19/2020] [Indexed: 02/07/2023] Open
Abstract
Radiotherapy plays a major role in the curative treatment of head and neck cancer, either as a single modality therapy, or in combination with surgery or chemotherapy, or both. Despite advances to limit radiation-induced side-effects, the major salivary glands are often affected. This frequently leads to hyposalivation which causes an increased risk for xerostomia, dental caries, mucositis, and malnutrition culminating in a significant impact on patients' quality of life. Previous research demonstrated that loss of salivary function is associated with a decrease in polarity regulators and an increase in nuclear Yap localization in a putative stem and progenitor cell (SPC) population. Yap activation has been shown to be essential for regeneration in intestinal injury models; however, the highest levels of nuclear Yap are observed in irradiated salivary SPCs that do not regenerate the gland. Thus, elucidating the inputs that regulate nuclear Yap localization and determining the role that Yap plays within the entire tissue following radiation damage and during regeneration is critical. In this study, we demonstrate that radiation treatment increases nuclear Yap localization in acinar cells and Yap-regulated genes in parotid salivary tissues. Conversely, administration of insulin-like growth factor 1 (IGF1), known to restore salivary function in mouse models, reduces nuclear Yap localization and Yap transcriptional targets to levels similar to untreated tissues. Activation of Rho-associated protein kinase (ROCK) using calpeptin results in increased Yap-regulated genes in primary acinar cells while inhibition of ROCK activity (Y-27632) leads to decreased Yap transcriptional targets. These results suggest that Yap activity is dependent on ROCK activity and provides new mechanistic insights into the regulation of radiation-induced hyposalivation.
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Affiliation(s)
- Wen Yu Wong
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, United States of America
| | - Kristy Gilman
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, United States of America
| | - Kirsten H. Limesand
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, United States of America
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, United States of America
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24
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Hong X, Min SN, Zhang YY, Lin YT, Wang F, Huang Y, Yu GY, Wu LL, Yang HY. TNF-α Suppresses Autophagic Flux in Acinar Cells in IgG4-Related Sialadenitis. J Dent Res 2019; 98:1386-1396. [PMID: 31461632 DOI: 10.1177/0022034519871890] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
IgG4-related sialadenitis (IgG4-RS) is a newly recognized immune-mediated systemic fibroinflammatory disease that affects salivary glands and leads to hyposalivation. Tumor necrosis factor-α (TNF-α) is a critical proinflammatory cytokine involved in several salivary gland disorders, but its role and mechanism regarding acinar cell injury in IgG4-RS are unknown. Here, we found that TNF-α level was significantly increased in serum and submandibular gland (SMG) of patients and that serum TNF-α level was negatively correlated with saliva flow rate. Ultrastructural observations of IgG4-RS SMGs revealed accumulation of large autophagic vacuoles, as well as dense fibrous bundles, decreased secretory granules, widened intercellular spaces, swollen mitochondria, and expanded endoplasmic reticulum. Expression levels of LC3 and p62 were both increased in patients' SMGs. TNF-α treatment led to elevated levels of LC3II and p62 in both SMG-C6 cells and cultured human SMG tissues but did not further increase their levels when combined with bafilomycin A1 treatment. Moreover, transfection of Ad-mCherry-GFP-LC3B in SMG-C6 cells confirmed the suppression of autophagic flux after TNF-α treatment. Immunofluorescence imaging revealed that costaining of LC3 and the lysosomal marker LAMP2 was significantly decreased in patients, TNF-α-treated SMG-C6 cells, and cultured human SMGs, indicating a reduction in autophagosome-lysosome fusion. Furthermore, the ratio of pro/mature cathepsin D was elevated in vivo, ex vivo, and in vitro. TNF-α also appeared to induce abnormal acidification of lysosomes in acinar cells, as assessed by lysosomal pH and LysoTracker DND-26 fluorescence intensity. In addition, TNF-α treatment induced transcription factor EB (TFEB) redistribution in SMG-C6 cells, which was consistent with the changes observed in IgG4-RS patients. TNF-α increased the phosphorylation of extracellular signal-regulated kinase (ERK) 1/2, and inhibition of ERK1/2 by U0126 reversed TNF-α-induced TFEB redistribution, lysosomal dysfunction, and autophagic flux suppression. These findings suggest that TNF-α is a key cytokine related to acinar cell injury in IgG4-RS through ERK1/2-mediated autophagic flux suppression.
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Affiliation(s)
- X Hong
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University, the Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China
| | - S N Min
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y Y Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - Y T Lin
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University, the Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China
| | - F Wang
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University, the Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China
| | - Y Huang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - G Y Yu
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University, the Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China.,Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, P.R. China
| | - L L Wu
- Department of Physiology and Pathophysiology, Peking University School of Basic Medical Sciences, Beijing, P.R. China
| | - H Y Yang
- Department of Oral and Maxillofacial Surgery, Peking University Shenzhen Hospital, Shenzhen Peking University, the Hong Kong University of Science and Technology Medical Center, Shenzhen, P.R. China
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25
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Gilman KE, Camden JM, Klein RR, Zhang Q, Weisman GA, Limesand KH. P2X7 receptor deletion suppresses γ-radiation-induced hyposalivation. Am J Physiol Regul Integr Comp Physiol 2019; 316:R687-R696. [PMID: 30892913 DOI: 10.1152/ajpregu.00192.2018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Head and neck cancer treatments typically involve a combination of surgery and radiotherapy, often leading to collateral damage to nearby tissues causing unwanted side effects. Radiation damage to salivary glands frequently leads to irreversible dysfunction by poorly understood mechanisms. The P2X7 receptor (P2X7R) is a ligand-gated ion channel activated by extracellular ATP released from damaged cells as "danger signals." P2X7R activation initiates apoptosis and is involved in numerous inflammatory disorders. In this study, we utilized P2X7R knockout (P2X7R-/-) mice to determine the role of the receptor in radiation-induced salivary gland damage. Results indicate a dose-dependent increase in γ-radiation-induced ATP release from primary parotid gland cells of wild-type but not P2X7R-/- mice. Despite these differences, apoptosis levels are similar in parotid glands of wild-type and P2X7R-/- mice 24-72 h after radiation. However, γ-radiation caused elevated prostaglandin E2 (PGE2) release from primary parotid cells of wild-type but not P2X7R-/- mice. To attempt to uncover the mechanism underlying differential PGE2 release, we evaluated the expression and activities of cyclooxygenase and PGE synthase isoforms. There were no consistent trends in these mediators following radiation that could explain the reduction in PGE2 release in P2X7R-/- mice. Irradiated P2X7R-/- mice have stimulated salivary flow rates similar to unirradiated controls, whereas irradiated wild-type mice have significantly decreased salivary flow rates compared with unirradiated controls. Notably, treatment with the P2X7R antagonist A438079 preserves stimulated salivary flow rates in wild-type mice following γ-radiation. These data suggest that P2X7R antagonism is a promising approach for preventing γ-radiation-induced hyposalivation.
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Affiliation(s)
- Kristy E Gilman
- Department of Nutritional Sciences, The University of Arizona , Tucson, Arizona
| | - Jean M Camden
- Christopher S. Bond Life Sciences Center, Department of Biochemistry, The University of Missouri , Columbia, Missouri
| | - Rob R Klein
- Department of Pathology, The University of Arizona , Tucson, Arizona
| | - Qionghui Zhang
- Department of Nutritional Sciences, The University of Arizona , Tucson, Arizona
| | - Gary A Weisman
- Christopher S. Bond Life Sciences Center, Department of Biochemistry, The University of Missouri , Columbia, Missouri
| | - Kirsten H Limesand
- Department of Nutritional Sciences, The University of Arizona , Tucson, Arizona
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26
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Sheng X, Zhou Y, Wang H, Shen Y, Liao Q, Rao Z, Deng F, Xie L, Yao C, Mao H, Liu Z, Peng M, Long Y, Zeng Y, Xue L, Gao N, Kong Y, Zhou X. Establishment and characterization of a radiation-induced dermatitis rat model. J Cell Mol Med 2019; 23:3178-3189. [PMID: 30821089 PMCID: PMC6484338 DOI: 10.1111/jcmm.14174] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/27/2018] [Accepted: 12/28/2018] [Indexed: 12/18/2022] Open
Abstract
Radiation‐induced dermatitis is a common and serious side effect after radiotherapy. Current clinical treatments cannot efficiently or fully prevent the occurrence of post‐irradiation dermatitis, which remains a significant clinical problem. Resolving this challenge requires gaining a better understanding of the precise pathophysiology, which in turn requires establishment of a suitable animal model that mimics the clinical condition, and can also be used to investigate the mechanism and explore effective treatment options. In this study, a single dose of 90 Gy irradiation to rats resulted in ulceration, dermal thickening, inflammation, hair follicle loss, and sebaceous glands loss, indicating successful establishment of the model. Few hair follicle cells migrated to form epidermal cells, and both the severity of skin fibrosis and hydroxyproline levels increased with time post‐irradiation. Radiation damaged the mitochondria and induced both apoptosis and autophagy of the skin cells. Therefore, irradiation of 90 Gy can be used to successfully establish a rat model of radiation‐induced dermatitis. This model will be helpful for developing new treatments and gaining a better understanding of the pathological mechanism of radiation‐induced dermatitis. Specifically, our results suggest autophagy regulation as a potentially effective therapeutic target.
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Affiliation(s)
- Xiaowu Sheng
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Yue Zhou
- Department of Radiation Oncology, Key Laboratory of Translational Radiation Oncology, Changsha, Hunan Province, China.,Department of Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China.,Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Hui Wang
- Department of Radiation Oncology, Key Laboratory of Translational Radiation Oncology, Changsha, Hunan Province, China.,Department of Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Yongyi Shen
- Nursing Department, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Qianjin Liao
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Zhen Rao
- Department of Head and Neck Surgery, The First People's Hospital of Changde City, Changsha, Hunan Province, China
| | - Feiyan Deng
- University of South China, Hengyang, Hunan Province, China.,Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Luyuan Xie
- University of South China, Hengyang, Hunan Province, China.,Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Chaoling Yao
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Huangxing Mao
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Zhiyan Liu
- Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Mingjing Peng
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Ying Long
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Yong Zeng
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China
| | - Lei Xue
- Pathology Department, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Nina Gao
- Pathology Department, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
| | - Yu Kong
- Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China
| | - Xiao Zhou
- Hunan Branch Center, National Tissue Engineering Center of China, Translational Medical Center, Central Laboratory, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan Province, China.,Department of Head and Neck Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, Hunan Province, China
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27
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Wong WY, Pier M, Limesand KH. Persistent disruption of lateral junctional complexes and actin cytoskeleton in parotid salivary glands following radiation treatment. Am J Physiol Regul Integr Comp Physiol 2018; 315:R656-R667. [PMID: 29897817 PMCID: PMC6230885 DOI: 10.1152/ajpregu.00388.2017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 02/02/2023]
Abstract
Xerostomia and hyposalivation are debilitating side effects for patients treated with ionizing radiation for head and neck cancer. Despite technological advances, collateral damage to the salivary glands remains a significant problem for patients and severely diminishes their quality of life. During the wound healing process, restoration of junctional contacts is necessary to maintain polarity, structural integrity, and orientation cues for secretion. However, little is known about whether these structural molecules are impacted following radiation damage and more importantly, during tissue restoration. We evaluated changes in adherens junctions and cytoskeletal regulators in an injury model where mice were irradiated with 5 Gy and a restoration model where mice injected postradiation with insulin-like growth factor 1 (IGF1) are capable of restoring salivary function. Using coimmunoprecipitation, there is a decrease in epithelial (E)-cadherin bound to β-catenin following damage that is restored to untreated levels with IGF1. Via its adaptor proteins, β-catenin links the cadherins to the cytoskeleton and part of this regulation is mediated through Rho-associated coiled-coil containing kinase (ROCK) signaling. In our radiation model, filamentous (F)-actin organization is fragmented, and there is an induction of ROCK activity. However, a ROCK inhibitor, Y-27632, prevents E-cadherin/β-catenin dissociation following radiation treatment. These findings illustrate that radiation induces a ROCK-dependent disruption of the cadherin-catenin complex and alters F-actin organization at stages of damage when hyposalivation is observed. Understanding the regulation of these components will be critical in the discovery of therapeutics that have the potential to restore function in polarized epithelium.
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Affiliation(s)
- Wen Yu Wong
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona , Tucson, Arizona
| | - Maricela Pier
- Department of Nutritional Sciences, University of Arizona , Tucson, Arizona
| | - Kirsten H Limesand
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona , Tucson, Arizona
- Department of Nutritional Sciences, University of Arizona , Tucson, Arizona
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28
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Hu L, Zhu Z, Hai B, Chang S, Ma L, Xu Y, Li X, Feng X, Wu X, Zhao Q, Qin L, Wang J, Zhang C, Liu F, Wang S. Intragland Shh gene delivery mitigated irradiation-induced hyposalivation in a miniature pig model. Am J Cancer Res 2018; 8:4321-4331. [PMID: 30214623 PMCID: PMC6134926 DOI: 10.7150/thno.26509] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/08/2018] [Indexed: 12/17/2022] Open
Abstract
Irreversible hypofunction of salivary glands is common in head and neck cancer survivors treated with radiotherapy and can only be temporarily relieved with current treatments. We found recently in mouse models that transient activation of Hedgehog pathway following irradiation rescued salivary gland function by preserving salivary stem/progenitor cells, parasympathetic innervation and microvessels. Due to huge differences between salivary glands of rodents and humans, to examine the translational potential of this approach, we evaluated effects of Shh gene transfer in a miniature pig model of irradiation-induced hyposalivation. Methods: The right parotid of each pig was irradiated with a single dose of 20 Gray. Shh and control GFP genes were delivered into irradiated parotid glands by noninvasive retrograde ductal instillation of corresponding adenoviral vectors 4 or 16 weeks after irradiation. Parotid saliva was collected every two weeks. Parotid glands were collected 5 or 20 weeks after irradiation for histology, Western blot and qRT-PCR assays. Results: Shh gene delivery 4 weeks after irradiation significantly improved stimulated saliva secretion and local blood supply up to 20 weeks, preserved saliva-producing acinar cells, parasympathetic innervation and microvessels as found in mouse models, and also activated autophagy and inhibited fibrogenesis in irradiated glands. Conclusion: These data indicate the translational potential of transient activation of Hedgehog pathway to preserve salivary function following irradiation.
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29
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Li H, Jin X, Chen B, Li P, Li Q. Autophagy-regulating microRNAs: potential targets for improving radiotherapy. J Cancer Res Clin Oncol 2018; 144:1623-1634. [PMID: 29971533 DOI: 10.1007/s00432-018-2675-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/21/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Radiotherapy (RT) is one of the most important therapeutic strategies against cancer. However, resistance of cancer cells to radiation remains a major challenge for RT. Thus, novel strategies to overcome cancer cell radioresistance are urgent. Macroautophagy (hereafter referred to as autophagy) is a biological process by which damaged cell components can be removed and accordingly represent a cytoprotective mechanism. Because radiation-induced autophagy is associated with either cell death or radioresistance of cancer cells, a deeper understanding of the autophagy mechanism triggered by radiation will expedite a development of strategies improving the efficacy of RT. MicroRNAs (miRNAs) are involved in many biological processes. Mounting evidence indicates that many miRNAs are involved in regulation of the autophagic process induced by radiation insult, but the underlying mechanisms remain obscure. Therefore, a deep understanding of the mechanisms of miRNAs in regulating autophagy and radioresistance will provide a new perspective for RT against cancer. METHODS We summarized the recent pertinent literature from various electronic databases, including PubMed. We reviewed the radiation-induced autophagy response and its association of the role, function and regulation of miRNAs, and discussed the feasibility of targeting autophagy-related miRNAs to improve the efficacy of RT. CONCLUSION The beneficial or harmful effect of autophagy may depend on the types of cancer and stress. The cytoprotective role of autophagy plays a dominant role in cancer RT. For most tumor cells, reducing radiation-induced autophagy can improve the efficacy of RT. MiRNAs have been confirmed to take part in the autophagy regulatory network of cancer RT, the autophagy-regulating miRNAs therefore could be developed as potential targets for improving RT.
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Affiliation(s)
- Hongbin Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, Gansu, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaodong Jin
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, Gansu, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu, China
| | - Bing Chen
- State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ping Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, Gansu, China.,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China.,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu, China
| | - Qiang Li
- Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou, 730000, Gansu, China. .,Key Laboratory of Heavy Ion Radiation Biology and Medicine, Chinese Academy of Sciences, Lanzhou, 730000, China. .,Key Laboratory of Basic Research on Heavy Ion Radiation Application in Medicine, Lanzhou, 730000, Gansu, China.
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30
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Abstract
Salivary gland cancers (SGCs), categorized as head and neck cancers (HNCs), constitute about 6% of head and neck cancer diagnoses based on estimate by American Head and Neck Society. Salivary gland tumors originate from different glandular cell types and are thus morphologically diverse. These tumors arise from any of the three major and various minor salivary glands. The incidence of SGCs has slowly increased during the last four decades. The etiology of SGCs is mostly unknown; however, specific gene mutations are associated with certain types of salivary tumors. Treatment options include surgical resection, radiation therapy (RT), chemotherapy, and multimodality therapy. HNC patients treated with RT often develop xerostomia and salivary hypofunction due to damaged salivary glands. In this review, we discuss etiology of SGCs, present findings on the role of autophagy in salivary tumorigenesis, review adverse effects of radiation treatment, and examine remedies for restoration of salivary function.
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Affiliation(s)
- H. Helen Lin
- Department of Diabetes and Metabolic Diseases Research, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010
| | | | - David K. Ann
- Department of Diabetes and Metabolic Diseases Research, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010
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31
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Identification of the protective mechanisms of Lactoferrin in the irradiated salivary gland. Sci Rep 2017; 7:9753. [PMID: 28852132 PMCID: PMC5575150 DOI: 10.1038/s41598-017-10351-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/07/2017] [Indexed: 02/07/2023] Open
Abstract
Radiotherapy is commonly used in patients with head and neck cancer, and usually results in irreversible salivary glands damage and hypofunction. It is therefore important to manage such irradiation to prevent damage to the salivary glands. A previous study showed that Lactoferrin (LF) has a radioprotective effect, but the mechanism was not determined in salivary glands. In the present study, we investigated the detailed radioprotective effect of LF using both ex vivo submandibular salivary gland organ culture and ICR male mice in vivo. We found that LF had effects on both cell proliferation and CyclinD1-mediated cell-cycle progression which were regulated via the ERK1/2 and AKT signal transduction pathways. In addition, LF affected acinar cell structure and function after irradiation. These findings suggest that LF may be a useful agent to prevent irradiation effects in salivary glands.
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Alessandri C, Ciccia F, Priori R, Astorri E, Guggino G, Alessandro R, Rizzo A, Conti F, Minniti A, Barbati C, Vomero M, Pendolino M, Finucci A, Ortona E, Colasanti T, Pierdominici M, Malorni W, Triolo G, Valesini G. CD4 T lymphocyte autophagy is upregulated in the salivary glands of primary Sjögren's syndrome patients and correlates with focus score and disease activity. Arthritis Res Ther 2017; 19:178. [PMID: 28743286 PMCID: PMC5526255 DOI: 10.1186/s13075-017-1385-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/10/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Primary Sjögren's syndrome (pSS) is a common chronic autoimmune disease characterized by lymphocytic infiltration of exocrine glands and peripheral lymphocyte perturbation. In the current study, we aimed to investigate the possible pathogenic implication of autophagy in T lymphocytes in patients with pSS. METHODS Thirty consecutive pSS patients were recruited together with 20 patients affected by sicca syndrome and/or chronic sialoadenitis and 30 healthy controls. Disease activity and damage were evaluated according to SS disease activity index, EULAR SS disease activity index, and SS disease damage index. T lymphocytes were analyzed for the expression of autophagy-specific markers by biochemical, molecular, and histological assays in peripheral blood and labial gland biopsies. Serum interleukin (IL)-23 and IL-21 levels were quantified by enzyme-linked immunosorbent assay. RESULTS Our study provides evidence for the first time that autophagy is upregulated in CD4+ T lymphocyte salivary glands from pSS patients. Furthermore, a statistically significant correlation was detected between lymphocyte autophagy levels, disease activity, and damage indexes. We also found a positive correlation between autophagy enhancement and the increased salivary gland expression of IL-21 and IL-23, providing a further link between innate and adaptive immune responses in pSS. CONCLUSIONS These findings suggest that CD4+ T lymphocyte autophagy could play a key role in pSS pathogenesis. Additionally, our data highlight the potential exploitation of T cell autophagy as a biomarker of disease activity and provide new ground to verify the therapeutic implications of autophagy as an innovative drug target in pSS.
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Affiliation(s)
- Cristiano Alessandri
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy.
| | - Francesco Ciccia
- Dipartimento Biomedico di Medicina Interna e Specialistica, Università degli Studi di Palermo, Palermo, Italy
| | - Roberta Priori
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Elisa Astorri
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Giuliana Guggino
- Dipartimento Biomedico di Medicina Interna e Specialistica, Università degli Studi di Palermo, Palermo, Italy
| | - Riccardo Alessandro
- Dipartimento di Biopatologia e Biotecnologie Mediche e Forensi, Università di Palermo, Palermo, Italy
| | - Aroldo Rizzo
- Pathology Unit, Azienda Ospedaliera Ospedali Riuniti Villa Sofia-Cervello, Palermo, Italy
| | - Fabrizio Conti
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Antonina Minniti
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Cristiana Barbati
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Marta Vomero
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Monica Pendolino
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Annacarla Finucci
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Elena Ortona
- Centro per la Medicina di Genere, Istituto Superiore di Sanità, Rome, Italy
| | - Tania Colasanti
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | | | - Walter Malorni
- Centro per la Medicina di Genere, Istituto Superiore di Sanità, Rome, Italy
| | - Giovanni Triolo
- Dipartimento Biomedico di Medicina Interna e Specialistica, Università degli Studi di Palermo, Palermo, Italy
| | - Guido Valesini
- Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
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Wang Y, Gan G, Wang B, Wu J, Cao Y, Zhu D, Xu Y, Wang X, Han H, Li X, Ye M, Zhao J, Mi J. Cancer-associated Fibroblasts Promote Irradiated Cancer Cell Recovery Through Autophagy. EBioMedicine 2017; 17:45-56. [PMID: 28258923 PMCID: PMC5360585 DOI: 10.1016/j.ebiom.2017.02.019] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 12/12/2022] Open
Abstract
Tumor relapse after radiotherapy is a significant challenge to oncologists, even after recent the advances in technologies. Here, we showed that cancer-associated fibroblasts (CAFs), a major component of cancer stromal cells, promoted irradiated cancer cell recovery and tumor relapse after radiotherapy. We provided evidence that CAFs-produced IGF1/2, CXCL12 and β-hydroxybutyrate were capable of inducing autophagy in cancer cells post-radiation and promoting cancer cell recovery from radiation-induced damage in vitro and in vivo in mice. These CAF-derived molecules increased the level of reactive oxygen species (ROS) post-radiation, which enhanced PP2A activity, repressing mTOR activation and increasing autophagy in cancer cells. Consistently, the IGF2 neutralizing antibody and the autophagy inhibitor 3-MA reduce the CAF-promoted tumor relapse in mice after radiotherapy. Taken together, our findings demonstrated that CAFs promoted irradiated cancer cell recovery and tumor regrowth post-radiation, suggesting that targeting the autophagy pathway in tumor cells may be a promising therapeutic strategy for radiotherapy sensitization.
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Affiliation(s)
- Yongbin Wang
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China
| | - Guifang Gan
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China
| | - Bocheng Wang
- 9th Affiliated Hospital of Shanghai Jiao Tong University School of Medicine, China
| | - Jinliang Wu
- 9th Affiliated Hospital of Shanghai Jiao Tong University School of Medicine, China
| | - Yuan Cao
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China
| | - Dan Zhu
- 9th Affiliated Hospital of Shanghai Jiao Tong University School of Medicine, China
| | - Yan Xu
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China
| | - Xiaona Wang
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China
| | - Hongxiu Han
- 9th Affiliated Hospital of Shanghai Jiao Tong University School of Medicine, China
| | - Xiaoling Li
- NIEHS, National Institute of Health, United States
| | - Ming Ye
- Renji Hospital, Shanghai Jiao Tong University School of Medicine, China.
| | - Jiangmin Zhao
- 9th Affiliated Hospital of Shanghai Jiao Tong University School of Medicine, China.
| | - Jun Mi
- Department of Biochemistry & Molecular Cell Biology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, China.
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Meyer S, Chibly AM, Burd R, Limesand KH. Insulin-Like Growth Factor-1-Mediated DNA Repair in Irradiated Salivary Glands Is Sirtuin-1 Dependent. J Dent Res 2016; 96:225-232. [PMID: 28106504 DOI: 10.1177/0022034516677529] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Ionizing radiation is one of the most common cancer treatments; however, the treatment leads to a wide range of debilitating side effects. In patients with head and neck cancer (HNC), the surrounding normal salivary gland is extremely sensitive to therapeutic radiation, and damage to this tissue results in various oral complications and decreased quality of life (QOL). In the current study, mice treated with targeted head and neck radiation showed a significant increase in double-stranded breaks (DSB) in the DNA of parotid salivary gland cells immediately after treatment, and this remained elevated 3 h posttreatment. In contrast, mice pretreated with insulin-like growth factor-1 (IGF-1) showed resolution of the same amount of initial DNA damage by 3 h posttreatment. At acute time points (30 min to 2 h), irradiated parotid glands had significantly decreased levels of the histone deactylase Sirtuin-1 (SirT-1) which has been previously shown to function in DNA repair. Pretreatment with IGF-1 increased SirT-1 protein levels and increased deacetylation of SirT-1 targets involved in DNA repair. Pharmacological inhibition of SirT-1 activity decreased the IGF-1-mediated resolution of DSB. These data suggest that IGF-1 promotes DNA repair in irradiated parotid glands through the maintenance and activation of SirT-1.
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Affiliation(s)
- S Meyer
- 1 Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
| | - A M Chibly
- 1 Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
| | - R Burd
- 1 Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
| | - K H Limesand
- 1 Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
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35
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Physiological role of aquaporin 5 in salivary glands. Pflugers Arch 2015; 468:519-39. [DOI: 10.1007/s00424-015-1749-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 12/18/2022]
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36
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Morgan-Bathke M, Lin HH, Ann DK, Limesand KH. The Role of Autophagy in Salivary Gland Homeostasis and Stress Responses. J Dent Res 2015; 94:1035-40. [PMID: 26092378 DOI: 10.1177/0022034515590796] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Autophagy is a catabolic process that has been shown to have a role in many cellular processes including the removal of excessive or damaged proteins and protein aggregates. The salivary glands play a critical role in oral health, and their secretory capacity may be critically intertwined with the autophagic process. This review describes the role of autophagy activation in normal salivary gland homeostasis and during the glandular stress responses of therapeutic radiation, ductal ligation, autoimmunity, and salivary gland adenoid cystic carcinoma.
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Affiliation(s)
- M Morgan-Bathke
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
| | - H H Lin
- Department of Molecular and Cellular Biology, Beckman Research Institute, City of Hope, Duarte, CA, USA
| | - D K Ann
- Diabetes and Metabolic Diseases Research, Beckman Research Institute, City of Hope, Duarte, CA, USA
| | - K H Limesand
- Department of Nutritional Sciences, University of Arizona, Tucson, AZ, USA
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Morgan-Bathke M, Harris ZI, Arnett DG, Klein RR, Burd R, Ann DK, Limesand KH. The Rapalogue, CCI-779, improves salivary gland function following radiation. PLoS One 2014; 9:e113183. [PMID: 25437438 PMCID: PMC4249875 DOI: 10.1371/journal.pone.0113183] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 10/21/2014] [Indexed: 01/14/2023] Open
Abstract
The standard of care for head and neck cancer typically includes surgical resection of the tumor followed by targeted head and neck radiation. However depending on tumor location and stage, some cases may not require surgical resection while others may be treated with chemoradiation. Unfortunately, these radiation treatments cause chronic negative side effects for patients. These side effects are associated with damage to surrounding normal salivary gland tissue and include xerostomia, changes in taste and malnutrition. The underlying mechanisms of chronic radiation-induced salivary gland dysfunction are unknown, however, in rodent models persistently elevated proliferation is correlated with reduced stimulated salivary flow. The rapalogue, CCI-779, has been used in other cell systems to induce autophagy and reduce proliferation, therefore the aim of this study was to determine if CCI-779 could be utilized to ameliorate chronic radiation-induced salivary gland dysfunction. Four to six week old Atg5f/f; Aqp5-Cre, Atg5+/+; Aqp5-Cre and FVB mice were treated with targeted head and neck radiation. FVB mice were treated with CCI-779, chloroquine, or DMSO post-radiation. Stimulated salivary flow rates were determined and parotid and submandibular salivary gland tissues were collected for analyses. Mice with a defect in autophagy, via a conditional knockout of Atg5 in the salivary glands, display increased compensatory proliferation in the acinar cell compartment and hypertrophy at 24-72 hours following radiation. FVB mice treated with post-therapy CCI-779 have significant improvements in salivary gland physiology as determined by stimulated salivary flow rates, proliferation indices and amylase production and secretion. Consequently, post-radiation use of CCI-779 allows for improvement of salivary gland function and reestablishment of glandular homeostasis. As CCI-779 is already FDA approved for other uses, it could have a secondary use to alleviate the chronic side effects in head and neck cancer patients who have completed anti-tumor therapy.
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Affiliation(s)
- Maria Morgan-Bathke
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, United States of America
| | - Zoey I. Harris
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, United States of America
| | - Deborah G. Arnett
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, United States of America
| | - Rob R. Klein
- Department of Pathology, University of Arizona, Tucson, Arizona, United States of America
| | - Randy Burd
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, United States of America
| | - David K. Ann
- Department of Molecular Pharmacology, Beckman Research Institute, City of Hope, Duarte, California, United States of America
| | - Kirsten H. Limesand
- Department of Nutritional Sciences, University of Arizona, Tucson, Arizona, United States of America
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38
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Pharmacological activation of the EDA/EDAR signaling pathway restores salivary gland function following radiation-induced damage. PLoS One 2014; 9:e112840. [PMID: 25409170 PMCID: PMC4237357 DOI: 10.1371/journal.pone.0112840] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 10/17/2014] [Indexed: 02/06/2023] Open
Abstract
Radiotherapy of head and neck cancers often results in collateral damage to adjacent salivary glands associated with clinically significant hyposalivation and xerostomia. Due to the reduced capacity of salivary glands to regenerate, hyposalivation is treated by substitution with artificial saliva, rather than through functional restoration of the glands. During embryogenesis, the ectodysplasin/ectodysplasin receptor (EDA/EDAR) signaling pathway is a critical element in the development and growth of salivary glands. We have assessed the effects of pharmacological activation of this pathway in a mouse model of radiation-induced salivary gland dysfunction. We report that post-irradiation administration of an EDAR-agonist monoclonal antibody (mAbEDAR1) normalizes function of radiation damaged adult salivary glands as determined by stimulated salivary flow rates. In addition, salivary gland structure and homeostasis is restored to pre-irradiation levels. These results suggest that transient activation of pathways involved in salivary gland development could facilitate regeneration and restoration of function following damage.
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39
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Chibly AM, Querin L, Harris Z, Limesand KH. Label-retaining cells in the adult murine salivary glands possess characteristics of adult progenitor cells. PLoS One 2014; 9:e107893. [PMID: 25238060 PMCID: PMC4169596 DOI: 10.1371/journal.pone.0107893] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 08/12/2014] [Indexed: 11/18/2022] Open
Abstract
Radiotherapy is the primary treatment for patients with head and neck cancer, which account for roughly 500,000 annual cases worldwide. Dysfunction of the salivary glands and associated conditions like xerostomia and dysphagia are often developed by these patients, greatly diminishing their life quality. Current preventative and palliative care fail to deliver an improvement in the quality of life, thus accentuating the need for regenerative therapies. In this study, a model of label retaining cells (LRCs) in murine salivary glands was developed, in which LRCs demonstrated proliferative potential and possessed markers of putative salivary progenitors. Mice were labeled with 5-Ethynyl-2′-deoxyuridine (EdU) at postnatal day 10 and chased for 8 weeks. Tissue sections from salivary glands obtained at the end of chase demonstrated co-localization between LRCs and the salivary progenitor markers keratin 5 and keratin 14, as well as kit mRNA, indicating that LRCs encompass a heterogeneous population of salivary progenitors. Proliferative potential of LRCs was demonstrated by a sphere assay, in which LRCs were found in primary and secondary spheres and they co-localized with the proliferation marker Ki67 throughout sphere formation. Surprisingly, LRCs were shown to be radio-resistant and evade apoptosis following radiation treatment. The clinical significance of these findings lie in the potential of this model to study the mechanisms that prevent salivary progenitors from maintaining homeostasis upon exposure to radiation, which will in turn facilitate the development of regenerative therapies for salivary gland dysfunction.
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Affiliation(s)
- Alejandro M. Chibly
- The University of Arizona, Cancer Biology Graduate Program, Tucson, Arizona, United States of America
| | - Lauren Querin
- The University of Arizona, Department of Nutritional Sciences, Tucson, Arizona, United States of America
| | - Zoey Harris
- The University of Arizona, Department of Nutritional Sciences, Tucson, Arizona, United States of America
| | - Kirsten H. Limesand
- The University of Arizona, Cancer Biology Graduate Program, Tucson, Arizona, United States of America
- The University of Arizona, Department of Nutritional Sciences, Tucson, Arizona, United States of America
- * E-mail:
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40
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Chibly AM, Nguyen T, Limesand KH. Palliative Care for Salivary Gland Dysfunction Highlights the Need for Regenerative Therapies: A Review on Radiation and Salivary Gland Stem Cells. ACTA ACUST UNITED AC 2014; 4. [PMID: 26693098 DOI: 10.4172/2165-7386.1000180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Radiotherapy remains the major course of treatment for Head and Neck cancer patients. A common consequence of radiation treatment is dysfunction of the salivary glands, which leads to a number of oral complications including xerostomia and dysphagia, for which there is no existent cure. Here, we briefly describe the current palliative treatments available for patients undergoing these conditions, such as oral lubricants, saliva substitutes, and saliva stimulants. None of these options achieves restoration of normal quality of life due to their limited effectiveness, and in some cases, adverse side effects of their own. Other therapies under development, such as acupuncture and electrostimulation have also yielded mixed results in clinical trials. Due to the ineffectiveness of palliative care to restore quality of life, it is reasonable to aim for the development of regenerative therapies that allow restoration of function of the salivary epithelium following radiation treatment. Adult stem cells are a necessary component of wound healing, and play important roles in preserving normal function of adult tissues. Thus, the present review mainly focuses on the effects of radiation on adult stem cells in a variety of tissues, which may be at play in the response of salivary glands to radiation treatment. This is of clinical importance because progenitor cells of the salivary glands have shown partial regenerative potential in mouse transplantation assays. Therefore, understanding how these progenitor cells are affected by radiation offers potential for development of new therapies for patients with xerostomia.
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Affiliation(s)
| | - Thao Nguyen
- The University of Arizona Nutritional Sciences Graduate Program, Tucson, AZ 85721, USA
| | - Kirsten H Limesand
- The University of Arizona Nutritional Sciences Graduate Program, Tucson, AZ 85721, USA
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