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Xuan D, Du C, Zhao W, Zhou J, Dai S, Zhang T, Wu M, Tian J. Downregulation of β-Catenin Contributes to type II Alveolar Epithelial Stem Cell Resistance to Epithelial-Mesenchymal Transition by Lowing Lin28/let-7 Ratios in Fibrosis-Resistant Mice after Thoracic Irradiation. Radiat Res 2023; 200:32-47. [PMID: 37141224 DOI: 10.1667/rade-22-00165.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 04/19/2023] [Indexed: 05/05/2023]
Abstract
Transdifferentiation of type II alveolar cells (AECII) is a major cause for radiation-induced lung fibrosis (RILF). Cell differentiation phenotype is determined by Lin28 (undifferentiated marker) and let-7 (differentiated marker) in a see-saw-pattern. Therefore, differentiation phenotype can be extrapolated based on Lin28/let-7 ratio. Lin28 is activated by β-catenin. To the best of our knowledge this study was the first to use the single primary AECII freshly isolated from irradiated lungs of fibrosis-resistant C3H/HeNHsd strain to further confirm RILF mechanism by comparing its differences in AECII phenotype status/state and cell differentiation regulators to fibrosis-prone C57BL/6j mice. Results showed that radiation pneumonitis and fibrotic lesions were seen in C3H/HeNHsd and C57BL/6j mouse strains, respectively. mRNAs of E-cadherin, EpCAM, HOPX and proSP-C (epithelial phenotype biomarkers) were significantly downregulated in single primary AECII isolated from irradiated lungs of both strains. Unlike C57BL/6j, α-SMA and Vimentin (mesenchymal phenotype biomarkers) were not upregulated in single AECII from irradiated C3H/HeNHsd. Profibrotic molecules, TGF-β1 mRNA was upregulated and β-catenin was significantly downregulated in AECII after irradiation (both P < 0.01). In contrast, transcriptions for GSK-3β, TGF-β1 and β-catenin were enhanced in isolated single AECII from irradiated C57BL/6j (P < 0.01-P < 0.001). The Lin28/let-7 ratios were much lower in single primary AECII from C3H/HeNHsd after irradiation vs. C57BL/6j. In conclusion, AECII from irradiated C3H/HeNHsd did not undergo epithelial-mesenchymal transition (EMT) and lower ratios of Lin28/let-7 contributed to AECII relatively higher differentiated status, leading to increased susceptibility to radiation stress and a failure in transdifferentiation in the absence of β-catenin. Reducing β-catenin expression and the ratios of Lin28/let-7 may be a promising strategy to prevent radiation fibrosis.
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Affiliation(s)
- Dandan Xuan
- Experimental Animal Platform, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Chunyan Du
- Experimental Animal Platform, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Wendi Zhao
- Department of Oncology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
| | - Jianwei Zhou
- Department of Oncology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
| | - Shan Dai
- Experimental Animal Platform, Academy of Medical Science, Zhengzhou University, Zhengzhou, Henan, China
| | - Tingting Zhang
- Center for Clinical Single-Cell Biomedicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
| | - Mengge Wu
- Fuwai Central China Cardiovascular Hospital, Animal experimental center of Central China Subcenter of National Center for Cardiovascular Diseases, Zhengzhou, Henan, China
| | - Jian Tian
- Department of Oncology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, School of Clinical Medicine, Henan University, Zhengzhou, Henan, China
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Li K, Peng ZY, Wang R, Li X, Du N, Liu DP, Zhang J, Zhang YF, Ma L, Sun Y, Tang SC, Ren H, Yang YP, Sun X. Enhancement of TKI sensitivity in lung adenocarcinoma through m6A-dependent translational repression of Wnt signaling by circ-FBXW7. Mol Cancer 2023; 22:103. [PMID: 37393311 PMCID: PMC10314519 DOI: 10.1186/s12943-023-01811-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 06/20/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Tyrosine kinase inhibitors (TKIs) that specifically target mutational points in the EGFR gene have significantly reduced suffering and provided greater relief to patients with lung adenocarcinoma (LUAD). The third-generation EGFR-TKI, Osimertinib, has been successfully employed in clinical treatments to overcome resistance to both original and acquired T790M and L858R mutational points. Nevertheless, the issue of treatment failure response has emerged as an insurmountable problem. METHODS By employing a combination of multiple and integrated approaches, we successfully identified a distinct population within the tumor group that plays a significant role in carcinogenesis, resistance, and recurrence. Our research suggests that addressing TKI resistance may involve targeting the renewal and repopulation of stem-like cells. To investigate the underlying mechanisms, we conducted RNA Microarray and m6A Epi-Transcriptomic Microarray analyses, followed by assessment of transcription factors. Additionally, we specifically designed a tag to detect the polypeptide circRNA-AA, and its expression was confirmed through m6A regulations. RESULTS We initially identified unique molecular signatures present in cancer stem cells that contributed to poor therapeutic responses. Activation of the alternative Wnt pathway was found to sustain the renewal and resistant status of these cells. Through bioinformatics analysis and array studies, we observed a significant decrease in the expression of circFBXW7 in Osimertinib-resistant cell lines. Notably, the abnormal expression pattern of circFBXW7 determined the cellular response to Osimertinib. Functional investigations revealed that circFBXW7 inhibits the renewal of cancer stem cells and resensitizes both resistant LUAD cells and stem cells to Osimertinib. In terms of the underlying mechanism, we discovered that circFBXW7 can be translated into short polypeptides known as circFBXW7-185AA. These polypeptides interact with β-catenin in an m6A-dependent manner. This interaction leads to reduced stability of β-catenin by inducing subsequent ubiquitination, thereby suppressing the activation of canonical Wnt signaling. Additionally, we predicted that the m6A reader, YTHDF3, shares common binding sites with hsa-Let-7d-5p. Enforced expression of Let-7d post-transcriptionally decreases the levels of YTHDF3. The repression of Let-7d by Wnt signaling releases the stimulation of m6A modification by YTHDF3, promoting the translation of circFBXW7-185AA. This creates a positive feedback loop contributing to the cascade of cancer initiation and promotion. CONCLUSIONS Our bench study, in vivo experiments, and clinical validation have unequivocally shown that circFBXW7 effectively inhibits the abilities of LUAD stem cells and reverses resistance to TKIs by modulating Wnt pathway functions through the action of circFBXW7-185AA on β-catenin ubiquitination and inhibition. The regulatory role of circRNA in Osimertinib treatment has been rarely reported, and our findings reveal that this process operates under the influence of m6A modification. These results highlight the tremendous potential of this approach in enhancing therapeutic strategies and overcoming resistance to multiple TKI treatments.
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Affiliation(s)
- Kai Li
- Department of Otorhinolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China
| | - Zi-Yang Peng
- School of Future Technology, National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Xi'an Jiaotong University, Xi'an City, 710061, Shaanxi Province, China
| | - Rui Wang
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
- Cancer Biology Program, University of Hawai'i Cancer Center, 701 Ilalo Street, Honolulu, HI, 96813, USA
| | - Xiang Li
- Department of Otorhinolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Ning Du
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Da-Peng Liu
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Jia Zhang
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Yun-Feng Zhang
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Lei Ma
- Department of Anesthesiology & Perioperative Medicine, Operating Centre, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, 710061, Shaanxi Province, China
| | - Ye Sun
- Department of Anesthesiology & Operation, Operating Centre, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, 710061, Shaanxi Province, China
| | - Shou-Ching Tang
- LSU School of Medicine, LSU-LCMC Cancer Center, New Orleans, Louisiana, 70112, USA
| | - Hong Ren
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China
| | - Yi-Ping Yang
- Department of Radiotherapy, Shaanxi Provincial Tumor Hospital, Shaanxi, 710061, Xi'an City, China
| | - Xin Sun
- Department of Thoracic Surgery, Department of Thoracic Surgery & Oncology, the First Affiliated Hospital of Xi'an Jiaotong University, Cancer Centre, Xi'an City, 710061, Shaanxi Province, China.
- Department of Pathology, Anatomy & Cell Biology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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Xiang M, Liu L, Wu T, Wei B, Liu H. RNA-binding proteins in degenerative joint diseases: A systematic review. Ageing Res Rev 2023; 86:101870. [PMID: 36746279 DOI: 10.1016/j.arr.2023.101870] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/12/2023] [Accepted: 01/27/2023] [Indexed: 02/07/2023]
Abstract
RNA-binding proteins (RBPs), which are conserved proteins comprising multiple intermediate sequences, can interact with proteins, messenger RNA (mRNA) of coding genes, and non-coding RNAs to perform different biological functions, such as the regulation of mRNA stability, selective polyadenylation, and the management of non-coding microRNA (miRNA) synthesis to affect downstream targets. This article will highlight the functions of RBPs, in degenerative joint diseases (intervertebral disc degeneration [IVDD] and osteoarthritis [OA]). It will reviews the latest advancements on the regulatory mechanism of RBPs in degenerative joint diseases, in order to understand the pathophysiology, early diagnosis and treatment of OA and IVDD from a new perspective.
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Affiliation(s)
- Min Xiang
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Ling Liu
- Department of Pediatrics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Tingrui Wu
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China
| | - Bo Wei
- Department of Orthopedics, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China.
| | - Huan Liu
- Department of Orthopedics, Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou 646000, China.
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The immunotherapy candidate TNFSF4 may help the induction of a promising immunological response in breast carcinomas. Sci Rep 2021; 11:18587. [PMID: 34545132 PMCID: PMC8452722 DOI: 10.1038/s41598-021-98131-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 09/06/2021] [Indexed: 12/31/2022] Open
Abstract
Immune checkpoint blockade, an immunotherapy, has been applied in multiple systemic malignancies and has improved overall survival to a relatively great extent; whether it can be applied in breast cancer remains unknown. We endeavored to explore possible factors that may influence immunotherapy outcomes in breast cancer using several public databases. The possible treatment target TNF superfamily member 4 (TNFSF4) was selected from many candidates based on its abnormal expression profile, survival-associated status, and ability to predict immune system reactions. For the first time, we identified the oncogenic features of TNFSF4 in breast carcinoma. TNFSF4 was revealed to be closely related to treatment that induced antitumor immunity and to interact with multiple immune effector molecules and T cell signatures, which was independent of endocrine status and has not been reported previously. Moreover, the potential immunotherapeutic approach of TNFSF4 blockade showed underlying effects on stem cell expansion, which more strongly and specifically demonstrated the potential effects of applying TNFSF4 blockade-based immunotherapies in breast carcinomas. We identified potential targets that may contribute to breast cancer therapies through clinical analysis and real-world review and provided one potential but crucial tool for treating breast carcinoma that showed effects across subtypes and long-term effectiveness.
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