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Wei J, Zhu K, Yang Z, Zhou Y, Xia Z, Ren J, Zhao Y, Wu G, Liu C. Hypoxia-Induced Autophagy Is Involved in Radioresistance via HIF1A-Associated Beclin-1 in Glioblastoma Multiforme. Heliyon 2023; 9:e12820. [PMID: 36691538 PMCID: PMC9860297 DOI: 10.1016/j.heliyon.2023.e12820] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 12/28/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
Radioresistance is the major factor of glioblastoma multiforme (GBM) treatment failure and relapse. Hypoxia and autophagy are linked to radioresistance and poor prognosis in solid tumors, but mechanisms remain unknown. Thus, we hypothesize that hypoxia may activate autophagy through two critical factors, HIF1A and Beclin-1, resulting in radioresistance of GBM in vitro and in vivo. In this study, we first demonstrated that HIF1A was overexpressed in GBM tissues and predicted a poor prognosis via bioinformatics. Secondly, we determined that hypoxia induced high expression of HIF1A and upregulated levels of Beclin-1 and autophagy, while HIF1A knockdown by shRNA reduced the expression of Beclin-1. Then we revealed the crosstalk and mechanisms of HIF1A-associated-Beclin-1 in three aspects: (a) transcriptional regulation, (b) protein interaction, and (c) HIF1A/BNIP3/Beclin-1 signaling pathway. Furthermore, we confirmed that silencing HIF1A enhanced the radiosensitivity of GBM in vitro and in vivo. Additionally, Beclin-1 suppression by 3-MA could reverse radioresistance induced by HIF1A under hypoxia. In conclusion, we demonstrated that hypoxia triggered autophagy via HIF1A-associated Beclin-1, resulting in radioresistance in GBM. HIF1A knockdown improved GBM radiosensitivity, and silencing Beclin-1 could reverse HIF1A-induced radioresistance under hypoxic conditions. These findings may help us comprehend the molecular underpinnings of hypoxia-induced autophagy and provide a novel perspective and prospective treatment for GBM radiosensitization.
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Affiliation(s)
- Jielin Wei
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Kuikui Zhu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Zhe Yang
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR China
| | - Ying Zhou
- Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Zihan Xia
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Jinghua Ren
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Yanxia Zhao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Gang Wu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China,Corresponding author.Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei 430022, China.
| | - Cuiwei Liu
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China,Corresponding author.Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, Hubei 430022, China.
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de Mattos RC, Guimarães IDS, Thiago LDS, de Melo AC. Evaluation of HIF-1α and VEGF-A expression in radiation-induced cystitis: A case-control study. Int Braz J Urol 2020; 47:295-305. [PMID: 33146980 PMCID: PMC7857752 DOI: 10.1590/s1677-5538.ibju.2020.0054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/01/2020] [Indexed: 12/16/2022] Open
Abstract
The standard treatment for locally advanced cervical cancer (CC) is chemoradiotherapy. Once the bladder receives part of the radiation, a typical inflammatory condition that configures radiation-induced cystitis may develop. Chronic radiation-induced cystitis is commonly characterized by the bladder new submucosal vascularization, which is typically fragile and favors hematuria. The current study aims to investigate if Hypoxia-Induced Factor (HIF-1α) and its transcriptional target Vascular Endothelial Growth Factor A (VEGF-A) could be a primary pathway leading to increased submucosal vascularization. HIF-1α and VEGF-A mRNA levels in bladder core biopsies from CC patients treated with radiotherapy versus untreated (non-irradiated) patients were analyzed using a droplet digital polymerase chain reaction technology. Gene expression results showed that HIF-1α and VEGF-A had no significant differences between bladder samples from patients previously irradiated and untreated patient samples. However, a direct relationship between the degree of late morbidity and the expression of HIF-1α and VEGF-A has been demonstrated. Despite the lack of statistical significance precludes a definitive conclusion, the data presented herein suggests that further studies investigating the role of HIF-1α in bladder neovascularization in radiation-induced cystitis are highly recommended.
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Affiliation(s)
| | | | - Leandro de Souza Thiago
- Divisão de Pesquisa Clínica, Instituto Nacional do Câncer - INCA, Rio de Janeiro, RJ, Brasil
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Toullec A, Buard V, Rannou E, Tarlet G, Guipaud O, Robine S, Iruela-Arispe ML, François A, Milliat F. HIF-1α Deletion in the Endothelium, but Not in the Epithelium, Protects From Radiation-Induced Enteritis. Cell Mol Gastroenterol Hepatol 2017; 5:15-30. [PMID: 29276749 PMCID: PMC5738457 DOI: 10.1016/j.jcmgh.2017.08.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 08/08/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Radiation therapy in the pelvic area is associated with side effects that impact the quality of life of cancer survivors. Interestingly, the gastrointestinal tract is able to adapt to significant changes in oxygen availability, suggesting that mechanisms related to hypoxia sensing help preserve tissue integrity in this organ. However, hypoxia-inducible factor (HIF)-dependent responses to radiation-induced gut toxicity are unknown. Radiation-induced intestinal toxicity is a complex process involving multiple cellular compartments. Here, we investigated whether epithelial or endothelial tissue-specific HIF-1α deletion could affect acute intestinal response to radiation. METHODS Using constitutive and inducible epithelial or endothelial tissue-specific HIF-1α deletion, we evaluated the consequences of epithelial or endothelial HIF-1α deletion on radiation-induced enteritis after localized irradiation. Survival, radiation-induced tissue injury, molecular inflammatory profile, tissue hypoxia, and vascular injury were monitored. RESULTS Surprisingly, epithelium-specific HIF-1α deletion does not alter radiation-induced intestinal injury. However, irradiated VECad-Cre+/-HIF-1αFL/FL mice present with lower radiation-induced damage, showed a preserved vasculature, reduced hypoxia, and reduced proinflammatory response compared with irradiated HIF-1αFL/FL mice. CONCLUSIONS We demonstrate in vivo that HIF-1α impacts radiation-induced enteritis and that this role differs according to the targeted cell type. Our work provides a new role for HIF-1α and endothelium-dependent mechanisms driving inflammatory processes in gut mucosae. Results presented show that effects on normal tissues have to be taken into account in approaches aiming to modulate hypoxia or hypoxia-related molecular mechanisms.
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Key Words
- EndoMT, endothelial-to-mesenchymal transition
- Endothelium
- HIF, hypoxia-inducible factor
- HIF-1α
- HIF-1αFl/FL, HIF-1α floxed mice
- HIMEC, human intestinal microvascular endothelial cells
- HUVEC, human umbilical vein endothelial cells
- IL, interleukin
- PAI-1, plasminogen activator inhibitor type-1
- PCR, polymerase chain reaction
- ROSA, ROSA26R LacZ reporter mice
- Radiation
- Sham-IR, sham-irradiation
- TBI, total body irradiation
- VECad-Cre, VE-cadherin-Cre mice
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Affiliation(s)
- Aurore Toullec
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Valérie Buard
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Emilie Rannou
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California
| | - Georges Tarlet
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Olivier Guipaud
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | | | - M. Luisa Iruela-Arispe
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, California
| | - Agnès François
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
| | - Fabien Milliat
- Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France
- Correspondence Address correspondence to: Fabien Milliat, PhD, Research Laboratory of Radiobiology and Radiopathology, Institute for Radiological Protection and Nuclear Safety, 92265 Fontenay-aux-Roses, France.Research Laboratory of Radiobiology and RadiopathologyInstitute for Radiological Protection and Nuclear Safety92265 Fontenay-aux-RosesFrance
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Zhou HY, Wang S, Zhang H, Wang L, Zhang WS. Inhibiting the effect of (90)Sr-(90)Y ophthalmic applicators on rat corneal neovascularization induced by sutures. Int J Ophthalmol 2016; 9:1251-4. [PMID: 27672586 DOI: 10.18240/ijo.2016.09.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To investigate a practical technique used to inhibit corneal angiogenesis with a (90)Sr-(90)Y ophthalmic applicator. METHODS A (90)Sr-(90)Y ophthalmic applicator was detected with a radioactive nuclide application treatment healthy protection standard. The applicator used was produced through medical dosimetry research; it had a concave applicator add measured the applicator temperature, serviceable humidity range, applicator appearance status, applicator radiation homogeneity, radioautography, and radiological safety of the original applicator surface. A vessel model was established using newborn rats, with sutures around the corneal limbus. Corneal neovascularization (CNV) were observed with a slit lamp. The new vessel length and response area were measured. RESULTS Low-dose radiation can inhibit CNV after corneal sutures. The absorbed dose of the applicator (0.046 Gy/s) was safe for the treatment of it. The lengths of new vessels and the areas of new vessels were lower than the new born vessel rat group (P<0.01). CONCLUSION The optimal radiation dose emitting from the applicator can be safe and potentially used in humans.
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Affiliation(s)
- Hong-Yan Zhou
- Department of Ophthalmology, China-Japan Union Hospital of Jilin University, Changchun 130033, Jilin Province, China
| | - Shuang Wang
- Department of Ophthalmology, China-Japan Union Hospital of Jilin University, Changchun 130033, Jilin Province, China
| | - Hong Zhang
- Department of Ophthalmology, China-Japan Union Hospital of Jilin University, Changchun 130033, Jilin Province, China
| | - Ling Wang
- Department of Ophthalmology, China-Japan Union Hospital of Jilin University, Changchun 130033, Jilin Province, China
| | - Wen-Song Zhang
- Department of Ophthalmology, the Second Hospital of Jilin University, Changchun 130033, Jilin Province, China
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Kintzinger C, Demoor-Goldschmidt C, Abderrahmani R, Paris F, Supiot S. Toxicité rectale de la radiothérapie : signes cliniques, physiopathologie et prise en charge. Cancer Radiother 2012; 16:372-6. [DOI: 10.1016/j.canrad.2012.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 05/28/2012] [Indexed: 12/29/2022]
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