1
|
Xie M, Tang Q, Wang S, Huang X, Wu Z, Han Z, Li C, Wang B, Shang Y, Yang H. Identification of miRNA expression profile in middle ear cholesteatoma using small RNA-sequencing. BMC Med Genomics 2024; 17:162. [PMID: 38890701 PMCID: PMC11186090 DOI: 10.1186/s12920-024-01932-5] [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: 12/11/2023] [Accepted: 06/12/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND The present study aims to identify the differential miRNA expression profile in middle ear cholesteatoma and explore their potential roles in its pathogenesis. METHODS Cholesteatoma and matched normal retroauricular skin tissue samples were collected from patients diagnosed with acquired middle ear cholesteatoma. The miRNA expression profiling was performed using small RNA sequencing, which further validated by quantitative real-time PCR (qRT-PCR). Target genes of differentially expressed miRNAs in cholesteatoma were predicted. The interaction network of 5 most significantly differentially expressed miRNAs was visualized using Cytoscape. Further Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genome (KEGG) pathway enrichment analyses were processed to investigate the biological functions of miRNAs in cholesteatoma. RESULTS The miRNA expression profile revealed 121 significantly differentially expressed miRNAs in cholesteatoma compared to normal skin tissues, with 56 upregulated and 65 downregulated. GO and KEGG pathway enrichment analyses suggested their significant roles in the pathogenesis of cholesteatoma. The interaction network of the the 2 most upregulated (hsa-miR-21-5p and hsa-miR-142-5p) and 3 most downregulated (hsa-miR-508-3p, hsa-miR-509-3p and hsa-miR-211-5p) miRNAs identified TGFBR2, MBNL1, and NFAT5 as potential key target genes in middle ear cholesteatoma. CONCLUSIONS This study provides a comprehensive miRNA expression profile in middle ear cholesteatoma, which may aid in identifying therapeutic targets for its management.
Collapse
Affiliation(s)
- Mengyao Xie
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Qi Tang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Shu Wang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Xiaowu Huang
- Department of Otolaryngology, Shenzhen Hospital, Southern Medical University, Shenzhen, 518100, P.R. China
| | - Zhiyuan Wu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, P.R. China
| | - Zhijin Han
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Chen Li
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Bin Wang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Yingying Shang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China
| | - Hua Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.1 Shuaifuyuan, Beijing, 100730, P.R. China.
| |
Collapse
|
2
|
Dżaman K, Czerwaty K, Reichert TE, Szczepański MJ, Ludwig N. Expression and Regulatory Mechanisms of MicroRNA in Cholesteatoma: A Systematic Review. Int J Mol Sci 2023; 24:12277. [PMID: 37569652 PMCID: PMC10418341 DOI: 10.3390/ijms241512277] [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: 07/08/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023] Open
Abstract
Cholesteatoma is a temporal bone disease characterized by dysfunctions of keratinocytes. MicroRNAs (miRNAs) are evolutionary conserved noncoding RNAs that regulate mRNA expression. They can be packaged into exosomes and transported to target cells that can be used in the future therapy of cholesteatoma. This study aimed to collect knowledge on the role of miRNAs and exosomal miRNAs in cholesteatoma and was conducted according to the PRISMA guidelines for systematic reviews. Four databases were screened: Pubmed/MEDLINE, Web of Science, Scopus, and the Cochrane Library. The last search was run on the 6th of June 2023. We included full-text original studies written in English, which examined miRNAs in cholesteatoma. The risk of bias was assessed using the Office of Health Assessment and Translation (OHAT) Risk of Bias Rating Tool, modified for the needs of this review. We identified 118 records and included 18 articles. Analyses revealed the downregulation of exosomal miR-17 as well as miR-10a-5p, miR-125b, miR-142-5p, miR34a, miR-203a, and miR-152-5p and the overexpression of exosomal miR-106b-5p as well as miR-1297, miR-26a-5p, miR-199a, miR-508-3p, miR-21-3p, miR-584-5p, and miR-16-1-3p in cholesteatoma. The role of differentially expressed miRNAs in cholesteatoma, including cell proliferation, apoptosis, the cell cycle, differentiation, bone resorption, and the remodeling process, was confirmed, making them a potential therapeutic target in this disease.
Collapse
Affiliation(s)
- Karolina Dżaman
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Katarzyna Czerwaty
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
| | - Torsten E. Reichert
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
| | - Mirosław J. Szczepański
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland; (K.D.); (K.C.)
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Nils Ludwig
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany; (T.E.R.); (N.L.)
| |
Collapse
|
3
|
Kotowski M, Adamczyk P, Szydlowski J. Micro RNAs and Circular RNAs in Different Forms of Otitis Media. Int J Mol Sci 2023; 24:ijms24076752. [PMID: 37047725 PMCID: PMC10095330 DOI: 10.3390/ijms24076752] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/25/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023] Open
Abstract
The aim of this comprehensive review was to present the current knowledge on the role of microRNAs (miRNAs) in acute, recurrent, and chronic forms of otitis media. Special attention was focused on cholesteatoma of the middle ear. MicroRNAs modulate gene expression, which, in turn, influences the development and likelihood of the recurrence of acute and aggressive chronic middle ear inflammatory processes. Moreover, this study discusses the modulating role of a specific subgroup of noncoding RNA, circular RNA (circRNA). Recognizing the precise potential pathways and the mechanisms of their function may contribute to a better understanding of the molecular bases of middle ear diseases and identifying novel methods for treating this demanding pathology. Articles published between 2009 and 2022 were used in this analysis. In this review, we provide a complete overview of the latest progress in identifying the role and mechanisms of particular miRNAs and circRNAs in acute, recurrent and chronic forms of otitis media.
Collapse
Affiliation(s)
- Michal Kotowski
- Department of Pediatric Otolaryngology, Poznan University of Medical Sciences, 60-572 Poznan, Poland
| | - Paulina Adamczyk
- Department of Pediatric Otolaryngology, Poznan University of Medical Sciences, 60-572 Poznan, Poland
| | - Jaroslaw Szydlowski
- Department of Pediatric Otolaryngology, Poznan University of Medical Sciences, 60-572 Poznan, Poland
| |
Collapse
|
4
|
Jovanovic I, Zivkovic M, Jesic S, Stankovic A. Non-coding RNA and cholesteatoma. Laryngoscope Investig Otolaryngol 2022; 7:60-66. [PMID: 35155784 PMCID: PMC8823169 DOI: 10.1002/lio2.728] [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: 10/22/2021] [Revised: 11/19/2021] [Accepted: 12/29/2021] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE Cholesteatoma is a challenging chronic pathology of the middle ear for which pharmacologic therapies have not been developed yet. Cholesteatoma occurrence depends on the interplay between genetic and environmental factors while master regulators orchestrating disease progression are still unknown. Therefore, in this review, we will discuss the diagnostic and therapeutic potential of non-coding RNAs (ncRNA) as a new class of regulatory molecules. METHODS We have comprehensively reviewed all articles investigating ncRNAs, specifically micro RNAs (miRNAs) and long ncRNAs (lncRNA/circRNA) in cholesteatoma tissue. RESULTS Candidate miRNA approaches indicated that miR-21 and let-7a are the major miRNAs involved in cholesteatoma growth, migration, proliferation, bone destruction, and apoptosis. Regulatory potential for the same biological processes was also observed for miR-203a. The NF-kB/miR-802/PTEN regulatory network was in relation to observed miR-21 activity in cholesteatoma as well. High throughput approaches revealed additional ncRNAs implicated in cholesteatoma pathology. Competitive endogenous RNA (ceRNA) analysis highlighted lncRNA/circRNA that could be "endogenous sponge" for miR-21 and let-7a based on the hypothesis that RNA transcripts can communicate with and regulate each other by using shared miRNA response elements. CONCLUSION In this review, we summarize the discoveries and role of ncRNA in major pathways in cholesteatoma and highlight the potential of miRNA-based therapeutics in the treatment of cholesteatoma. Level of Evidence: NA.
Collapse
Affiliation(s)
- Ivan Jovanovic
- VINČA Institute of Nuclear Sciences, National Institute of thе Republic of SerbiaUniversity of BelgradeBelgradeSerbia
| | - Maja Zivkovic
- VINČA Institute of Nuclear Sciences, National Institute of thе Republic of SerbiaUniversity of BelgradeBelgradeSerbia
| | - Snezana Jesic
- Medical Faculty BelgradeUniversity of BelgradeBelgradeSerbia
- Clinic for Otorhinolaryngology and Maxillofacial SurgeryClinical Centre of SerbiaBelgradeSerbia
| | - Aleksandra Stankovic
- VINČA Institute of Nuclear Sciences, National Institute of thе Republic of SerbiaUniversity of BelgradeBelgradeSerbia
| |
Collapse
|
5
|
Fadhil RS, Wei MQ, Nikolarakos D, Good D, Nair RG. Salivary microRNA miR-let-7a-5p and miR-3928 could be used as potential diagnostic bio-markers for head and neck squamous cell carcinoma. PLoS One 2020; 15:e0221779. [PMID: 32208417 PMCID: PMC7092992 DOI: 10.1371/journal.pone.0221779] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 08/14/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUNDS MicroRNAs (miRNA) are a class of non-protein-coding RNAs that have significant biological and pathological functions. The importance of miRNAs as potential cancer diagnostic biomarkers is gaining attention due to their influence in the regulation of cellular processes such as cell differentiation, proliferation and apoptosis. The aim of this study was to identify significant miRNAs from saliva as potential diagnostic biomarkers in the early diagnosis and prognosis of head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS Five differentially expressed miRNAs (miR-7703, miR- let-7a-5p, miR- 345-5p, miR- 3928 and miR- 1470) were selected from Next Generation Sequencing (NGS) miRNA data generated from our previous study using saliva of 12 HNSCC patients and 12 healthy controls. Their differential expressed miRNAs were subsequently validated by RT-qPCR using saliva samples from healthy controls (n = 80) and HNSCC patients (n = 150). Total RNA was isolated from 150 saliva samples of HNSCC patients and was transcripted into cDNA by TaqMan MicroRNA Reverse Transcription Kit. Using quantitative RT-PCR analysis, salivary miRNAs were identified in HNSCC patients (n = 150) and healthy controlled cases (n = 80). T-tests were used to compare the differences among the various clinical variants. RESULTS On average 160 ng/μl was isolated from 500 μl of saliva. Overall, a good correlation observed between the HNSCC and some of miRNAs expression levels. Salivary miR-let-7a-5p (P<0.0001) and miR-3928 (P< 0.01) were significantly down regulated in saliva of HNSCC patients relative to age and sex-matched healthy controls. A number of salivary miRNAs (miR-let-7a-5p and miR-3928) were correlated with lymph node metastasis (p = 0.003, p = 0.049) and tumour size (p = 0.01, p = 0.02), respectively. However, our preliminary analysis showed no significant differences in salivary miR-1470, miR-345-5p or miR-7703 expression between patients and healthy controls. Most notably, our analysis showed that salivary miR-let-7a-5p and miR-3928 expression levels have significant sensitivity and specificity to distinguish between patients with HNSCC and healthy controls. CONCLUSION This study concluded that salivary miR-let-7a-5p and miR-3928 has the potential to be novel non-invasive biomarkers for early detection and prognosis of HNSCC.
Collapse
Affiliation(s)
- Rushdi S. Fadhil
- School of Medical Science, Griffith University and Menzies Health Institute Queensland, Gold Coast, Queensland, Australia
- School of Dentistry and Oral Health, Griffith University Gold Coast, Queensland, Australia
| | - Ming Q. Wei
- School of Medical Science, Griffith University and Menzies Health Institute Queensland, Gold Coast, Queensland, Australia
| | - Dimitrios Nikolarakos
- Oral and Maxillofacial Surgery, Queensland Health, Gold Coast University Hospital, Gold Coast, Queensland, Australia
| | - David Good
- Discipline of Physiotherapy, School of Allied Health, Australian Catholic University, Queensland, Australia
| | - Raj G. Nair
- School of Dentistry and Oral Health, Griffith University Gold Coast, Queensland, Australia
- Oral Oncology, Haematology and Oncology, Gold Coast University Hospital, Gold Coast, Queensland, Australia
| |
Collapse
|
6
|
Zhang J, Yan S, Chang L, Guo W, Wang Y, Wang Y, Zhang P, Chen HY, Huang S. Direct microRNA Sequencing Using Nanopore-Induced Phase-Shift Sequencing. iScience 2020; 23:100916. [PMID: 32113156 PMCID: PMC7047193 DOI: 10.1016/j.isci.2020.100916] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 01/31/2020] [Accepted: 02/11/2020] [Indexed: 12/24/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of short non-coding RNAs that function in RNA silencing and post-transcriptional gene regulation. However, direct characterization of miRNA is challenging due to its unique properties such as its low abundance, sequence similarities, and short length. Although urgently needed, single molecule sequencing of miRNA has never been demonstrated, to the best of our knowledge. Nanopore-induced phase-shift sequencing (NIPSS), which is a variant form of nanopore sequencing, could directly sequence any short analytes including miRNA. In practice, NIPSS clearly discriminates between different identities, isoforms, and epigenetic variants of model miRNA sequences. This work thus demonstrates direct sequencing of miRNA, which serves as a complement to existing miRNA sensing routines by the introduction of the single molecule resolution. Future engineering of this technique may assist miRNA-based early stage diagnosis or inspire novel cancer therapeutics. The first demonstration of single molecule miRNA sequencing miRNA sequencing by NIPSS can directly identify epigenetic modifications Enzymatic conjugation enables NIPSS sequencing of natural miRNAs
Collapse
Affiliation(s)
- Jinyue Zhang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Shuanghong Yan
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Le Chang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Weiming Guo
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China; Synthetic and Functional Biomolecules Center, Beijing National Laboratory for Molecular Sciences, Department of Chemical Biology, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yuqin Wang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Yu Wang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Panke Zhang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shuo Huang
- State Key Laboratory of Analytical Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China; Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing 210023, China.
| |
Collapse
|
7
|
Gao J, Tang Q, Xue R, Zhu X, Wang S, Zhang Y, Liu W, Gao Z, Yang H. Comprehensive circular RNA expression profiling with associated ceRNA network reveals their therapeutic potential in cholesteatoma. Oncol Rep 2020; 43:1234-1244. [PMID: 32323838 PMCID: PMC7058062 DOI: 10.3892/or.2020.7501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 01/14/2020] [Indexed: 01/13/2023] Open
Abstract
Cholesteatoma is a chronic disease that pathologically displays a benign tumor with excessive squamous epithelial cell proliferation in the middle ear. Clinically, however, it can manifest malignant behavior by destroying adjacent tissues and organs. Although previous studies have demonstrated that the pathogenesis of cholesteatoma is correlated with epigenetic dysregulation, the exact mechanism remains unclear. Circular RNAs (circRNAs) have been revealed as being abundantly expressed in various organisms and have been found to contribute to the regulation of many diseases. To date, no reports have elucidated their expression profiles and functions in cholesteatoma. In the present study, the circRNA expression profile in cholesteatoma was explored for the first time by using microarray analysis. We obtained a total of 355 significantly differentially expressed circRNAs in cholesteatoma, among which 101 were identified to be upregulated and 254 downregulated. By constructing circRNA‑lncRNA‑miRNA‑mRNA competing endogenous RNA (ceRNA) network, it was discovered that circRNAs may function as ceRNAs and contribute to the formation of cholesteatoma. These results provide novel insight into the pathogenesis of cholesteatoma and suggest circRNAs as potential promising therapeutic targets for cholesteatoma.
Collapse
Affiliation(s)
- Juanjuan Gao
- Department of Otolaryngology, Head and Neck Surgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, P.R. China
| | - Qi Tang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Ruoyan Xue
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Xiaohui Zhu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Shihua Wang
- Center of Excellence in Tissue Engineering, Key Laboratory of Beijing, Institute of Basic Medical Sciences and School of Basic Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Yongli Zhang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Wenbin Liu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Zhiqiang Gao
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Hua Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| |
Collapse
|
8
|
Strub GM, Perkins JA. MicroRNAs for the pediatric otolaryngologist. Int J Pediatr Otorhinolaryngol 2018; 112:195-207. [PMID: 30055733 DOI: 10.1016/j.ijporl.2018.06.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/26/2018] [Accepted: 06/26/2018] [Indexed: 02/06/2023]
Abstract
The scope of pediatric otolaryngology is broad and encompasses a wide variety of diseases in which the fundamental phenotype-causing abnormality exists at the level of gene regulation and expression. Development of novel molecular biology instruments to diagnose disease, monitor treatment response, and prevent recurrence will facilitate the delivery of appropriate surgical and adjuvant medical treatments with lower morbidity. MicroRNAs (miRNAs) have emerged as a relatively new class of molecules that directly modulate gene expression and are abnormally expressed in a multitude of disease processes including those within the scope of pediatric otolaryngology. Functionally, miRNAs control multiple cellular functions including angiogenesis, cell proliferation, cell survival, genome stability, and inflammation. These short, non-protein coding RNA molecules are present and stable in tissue, blood, saliva, and urine, making them ideal disease biomarkers. The simple structure of miRNAs and their ability to directly modulate the expression of specific genes lends exciting therapeutic potential to miRNA-based therapies. Here we review the current literature of miRNAs as it relates to diseases within the scope of pediatric otolaryngology, and discuss their potential as diagnostic biomarkers and therapeutic targets.
Collapse
Affiliation(s)
- Graham M Strub
- Department of Otolaryngology - Head and Neck Surgery, University of Washington, Seattle, WA, 98105, United States; Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, United States
| | - Jonathan A Perkins
- Department of Otolaryngology - Head and Neck Surgery, University of Washington, Seattle, WA, 98105, United States; Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, 98101, United States; Division of Pediatric Otolaryngology, Department of Surgery, Seattle Children's Hospital, Seattle, WA, 98105, United States.
| |
Collapse
|
9
|
Li Y, Liang J, Hu J, Ren X, Sheng Y. Down-regulation of exosomal miR-106b-5p derived from cholesteatoma perimatrix fibroblasts promotes angiogenesis in endothelial cells by overexpression of Angiopoietin 2. Cell Biol Int 2018; 42:1300-1310. [PMID: 29905392 DOI: 10.1002/cbin.11002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 06/02/2018] [Indexed: 12/17/2022]
Abstract
Human cholesteatoma perimatrix fibroblasts (hCPFs) can stimulate the endothelial cells of nearby microvessels to proliferate and migrate in a paracrine manner. Exosomes, secreted from various cell types, are one of the most important paracrine factors and play critical roles in intercellular communication. However, whether exosomes derived from human cholesteatoma perimatrix fibroblasts (hCPFs-Exo) can promote angiogenesis has not been reported. In this study, we isolated exosomes secreted by hCPFs and observed that hCPFs-Exo was able to promote migration and tube formation in human umbilical vein endothelial cells (HUVECs). Advanced studies revealed hCPFs-Exo with low expression of miR-106b-5p was transferred into HUVECs, and decreased expression of miR-106b-5p could promote angiogenesis by targeting Angiopoietin 2 (Angpt2) via binding to its 3'-UTR. Furthermore, low levels of miR-106b-5p triggered overexpression of Angpt2, and significantly increased HUVEC migration and tube formation. Taken together, our results suggest that hCPFs-Exo transports low expressed exosomal miR-106b-5p to endothelial cells and promotes angiogenesis by overexpression of Angpt2.
Collapse
Affiliation(s)
- Yang Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, No.157, Xi Wu Lu, Xi'an 710004, Shaanxi Province, China
| | - JianMin Liang
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, No.157, Xi Wu Lu, Xi'an 710004, Shaanxi Province, China
| | - Juan Hu
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, No.157, Xi Wu Lu, Xi'an 710004, Shaanxi Province, China
| | - Xiaoyong Ren
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, No.157, Xi Wu Lu, Xi'an 710004, Shaanxi Province, China
| | - Ying Sheng
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, No.157, Xi Wu Lu, Xi'an 710004, Shaanxi Province, China
| |
Collapse
|
10
|
Chang CC, Lin CC, Wang CH, Huang CC, Ke TW, Wei PL, Yeh KT, Hsu KC, Hsu NY, Cheng YW. miR-211 regulates the expression of RRM2 in tumoral metastasis and recurrence in colorectal cancer patients with a k-ras gene mutation. Oncol Lett 2018; 15:8107-8117. [PMID: 29731918 DOI: 10.3892/ol.2018.8295] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 02/02/2018] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) ranks as the third-leading cause of cancer-associated mortalities in Taiwan. The expression of ribonucleotide reductase M2 (RRM2) and p53R2 is associated with tumoral malignancy and progression in several types of cancer. The aim of the present study was to determine the association of p53R2/RRM2 with the upstream expression of microRNA (miR)-211 and the association of expression levels of p53, APC and k-ras with clinical outcomes in patients with CRC. The study consisted of 192 tumor tissue samples obtained from patients with CRC. Immunohistochemistry and direct sequencing of DNA were performed to analyze p53R2/RRM2 protein expression and p53/APC/k-ras gene mutations in these samples. The expression level of miR-211 was detected by reverse transcription-quantitative polymerase chain reaction. The results showed that the expression of p53R2 was lower and that of RRM2 was higher in patients with lymph node metastasis, distant metastasis, and late-stage CRC compared with patients without lymph node metastasis, distant metastasis and early-stage CRC. A high expression of RRM2 in patients had a negative effect on overall survival (OS) and disease-free survival (DFS) in CRC. Positive expression of RRM2 was detected in tumor tissues, and expression associated with the presence of k-ras gene mutation. Furthermore, it was detected that the upstream miR-211 expression was negatively associated with RRM2 expression in tumor tissues of patients with CRC. miR-211 expression was associated with survival and tumoral recurrence in patients with k-ras mutations. The present authors suggest that the downregulation of miR-211 and overexpression of RRM2 in tumor tissues of patients with CRC could be used to predict metastases and disease prognosis, particularly in patients with k-ras gene mutations.
Collapse
Affiliation(s)
- Chiu-Chun Chang
- Institute of Medicine, College of Medicine, Chung Shan Medical University, Taichung 402, Taiwan, R.O.C.,Department of Internal Medicine, Division of Gastroenterology, Chung Shan Medical University Hospital, Taichung 402, Taiwan, R.O.C
| | - Chun-Che Lin
- Institute of Medicine, College of Medicine, Chung Shan Medical University, Taichung 402, Taiwan, R.O.C.,Department of Internal Medicine, Division of Gastroenterology, Chung Shan Medical University Hospital, Taichung 402, Taiwan, R.O.C.,School of Medicine, College of Medicine, Chung Shan Medical University, Taichung 402, Taiwan, R.O.C
| | - Chia-Hung Wang
- Department of Pharmacology, Tung's Taichung MetroHarbor Hospital, Taichung 435, Taiwan, R.O.C
| | - Chi-Chou Huang
- School of Medicine, College of Medicine, Chung Shan Medical University, Taichung 402, Taiwan, R.O.C.,Department of Surgery, Division of General Surgery, Chung Shan Medical University Hospital, Taichung 402, Taiwan, R.O.C
| | - Tao-Wei Ke
- Department of Surgery, Division of General Surgery, China Medical University Hospital, Taichung 402, Taiwan, R.O.C
| | - Po-Li Wei
- Department of Surgery, Division of General Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,School of Medicine, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Cancer Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 115, Taiwan, R.O.C
| | - Ken-Tu Yeh
- Department of Pathology, Changhua Christian Hospital, Changhua 500, Taiwan, R.O.C
| | - Kai-Cheng Hsu
- Cancer Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 115, Taiwan, R.O.C
| | - Nan-Yung Hsu
- Cancer Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Department of Surgery, Taipei Medical University Hospital, Taipei 100, Taiwan, R.O.C.,Division of Thoracic Surgery, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Ya-Wen Cheng
- Cancer Center, Taipei Medical University Hospital, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 115, Taiwan, R.O.C.,Translational Cancer Research Center, Taipei Medical University, Taipei 100, Taiwan, R.O.C.,Department of R&D, Calgent Biotechnology Co., Ltd, Taipei 100, Taiwan, R.O.C
| |
Collapse
|
11
|
Gao J, Tang Q, Zhu X, Wang S, Zhang Y, Liu W, Gao Z, Yang H. Long noncoding RNAs show differential expression profiles and display ceRNA potential in cholesteatoma pathogenesis. Oncol Rep 2018; 39:2091-2100. [PMID: 29565455 PMCID: PMC5928766 DOI: 10.3892/or.2018.6320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 03/16/2018] [Indexed: 11/05/2022] Open
Abstract
Cholesteatoma is a pathologically benign but clinically destructive middle ear disease, which is caused by excessive epidermal migration and uncontrolled hyperproliferation of keratinocytes of squamous epithelium, leading to various clinical manifestations and serious complications, such as hearing loss, dizziness, facial paralysis, meningitis, and hydrocephalus. However, the pathogenesis of cholesteatoma is still not fully understood. Herein, we performed microarray analysis to identify the differentially expressed patterns of lncRNAs in cholesteatoma for the first time. Our data indicated that compared with matched normal skin tissue, lncRNA expression profiles were significantly altered in cholesteatoma. A total of 787 lncRNAs were identified (fold change ≥2.0, P<0.05), consisting of 181 upregulated and 606 downregulated lncRNAs. Furthermore, by constructing an lncRNA/miRNA/mRNA competing endogenous RNA (ceRNA) network, we found that lncRNAs, such as lncRNA‑uc001kfc.1, had ceRNA potential in cholesteatoma formation. In conclusion, lncRNAs were aberrantly expressed in cholesteatoma compared with normal skin tissues and may play important roles in cholesteatoma formation. Our findings shed novel light on the molecular mechanism of cholesteatoma pathogenesis and suggest that lncRNAs may be potential therapeutic targets for cholesteatoma.
Collapse
Affiliation(s)
- Juanjuan Gao
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Qi Tang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Xiaohui Zhu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Shihua Wang
- Center of Excellence in Tissue Engineering, Key Laboratory of Beijing, Institute of Basic Medical Sciences and School of Basic Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Yongli Zhang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Wenbin Liu
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Zhiqiang Gao
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| | - Hua Yang
- Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P.R. China
| |
Collapse
|
12
|
Xie S, Liu X, Pan Z, Chen X, Peng A, Yin T, Ren J, Liu W. Microarray Analysis of Differentially-expressed MicroRNAs in Acquired Middle Ear Cholesteatoma. Int J Med Sci 2018; 15:1547-1554. [PMID: 30443177 PMCID: PMC6216055 DOI: 10.7150/ijms.26329] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/27/2018] [Indexed: 11/18/2022] Open
Abstract
Objectives: To analyze the miRNAs expression profiling between acquired middle ear cholesteatoma and normal skin, and to identify several novel miRNAs which may be involved in the etiopathogenesis of middle ear cholesteatoma. Methods: MiRNA microarray technology was adopted to analyze the miRNA expression profiling between acquired middle ear cholesteatoma and normal skin. qRT-PCR was used to validate selected differentially expressed miRNAs. Results: The miRNA microarray technology showed totally 44 upregulated (miRNA-21-3p, miRNA-584-5p, miRNA-16-1-3p, etc) and 175 downregulated (miRNA-10a-5p, miRNA-152-5p, miRNA-203b-5p, etc) miRNAs in cholesteatoma tissues with 2-fold change compared with normal skin. The qRT-PCR validation was in accordance with the microarray results partly: miRNA-21-3p and miRNA-16-1-3p expressed significantly higher while miRNA-10a-5p exhibited an obviously decreased expression in middle ear cholesteatoma tissues when compared with normal skin. The GO and KEGG pathway analyses provided clues that these differentially expressed miRNAs might play essential roles in the etiopathogenesis of middle ear cholesteatoma, including cell proliferation, apoptosis, cell cycle, differentiation, bone resorption and remodeling process. Conclusions: Our study suggests possible roles of differentially expressed miRNAs in the pathogenesis of middle ear cholesteatoma. Targeting on these miRNAs may provide a new strategy for cholesteatoma therapy in the future.
Collapse
Affiliation(s)
- Shumin Xie
- Department of Otolaryngology-Head and Neck Surgery, The Xiangya Hospital, Central South University, Hunan provincial key lab, Otolaryngology institute of major diseases, Changsha, Hunan 410008, China
| | - Xiaoyu Liu
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Zhen Pan
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Xing Chen
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Anquan Peng
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Tuanfang Yin
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Jihao Ren
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Wei Liu
- Department of Otolaryngology-Head and Neck Surgery, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| |
Collapse
|
13
|
Chen X, Li X, Qin Z. MicroRNA-21 promotes the proliferation and invasion of cholesteatoma keratinocytes. Acta Otolaryngol 2016; 136:1261-1266. [PMID: 27376830 DOI: 10.1080/00016489.2016.1202447] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
CONCLUSIONS The present study revealed that miR-21 promotes the proliferation and invasion of cholesteatoma keratinocytes. These results provide a partial explanation for the more aggressive clinical behavior observed in cholesteatoma. OBJECTIVE This study aims to investigate the post-transcriptional regulatory effects that control proliferation, apoptosis, and invasion in cholesteatoma keratinocytes. In particular, the potential role of miR-21 was focused on in this study. METHODS Thirty cholesteatoma tissues were processed for RNA and cell culture. Cholesteatoma keratinocytes were transfected with miR-21 mimics, miR-21 inhibitors, or negative control miRNAs; and growth curves were drawn. RT-PCR was used to assess the expression levels of miR-21. EdU incorporation assay and TUNEL staining were used to assess the proliferation and apoptosis of cholesteatoma keratinocytes, respectively. The invasive abilities of cholesteatoma keratinocytes were examined using 6-well Transwell plates. RESULTS MiRNA-21 was upregulated when cholesteatoma keratinocytes were transfected with miR-21 mimics. Furthermore, the number of proliferative EdU + cells increased in cholesteatoma keratinocytes transfected with miR-21 mimics; and the number of TUNEL-positive cells also increased in cells transfected with miR-21 mimics. In addition, the number of migrated cells transfected with miR-21 mimics was higher, compared with migrated cells transfected miR-21 inhibitors or control miRNA.
Collapse
|
14
|
Xie S, Xiang Y, Wang X, Ren H, Yin T, Ren J, Liu W. Acquired cholesteatoma epithelial hyperproliferation: Roles of cell proliferation signal pathways. Laryngoscope 2016; 126:1923-30. [PMID: 26989841 DOI: 10.1002/lary.25834] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2015] [Indexed: 12/31/2022]
Affiliation(s)
- Shumin Xie
- Department of Otolaryngology-Head and Neck Surgery; Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Yuyan Xiang
- Department of Human Anatomy; University of South China; Hengyang Hunan Province China
| | - Xiaoli Wang
- Department of Otolaryngology-Head and Neck Surgery; The Second Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Hongmiao Ren
- Department of Otolaryngology-Head and Neck Surgery; The Second Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Tuanfang Yin
- Department of Otolaryngology-Head and Neck Surgery; The Second Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Jihao Ren
- Department of Otolaryngology-Head and Neck Surgery; The Second Xiangya Hospital of Central South University; Changsha Hunan Province China
| | - Wei Liu
- Department of Otolaryngology-Head and Neck Surgery; The Second Xiangya Hospital of Central South University; Changsha Hunan Province China
| |
Collapse
|
15
|
Zhang W, Chen X, Qin Z. MicroRNA let-7a suppresses the growth and invasion of cholesteatoma keratinocytes. Mol Med Rep 2014; 11:2097-103. [PMID: 25405753 DOI: 10.3892/mmr.2014.2971] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 10/24/2014] [Indexed: 11/06/2022] Open
Abstract
Cholesteatomas are benign epidermally‑derived lesions of the temporal bone that are caused by migration of hyperproliferative keratinocytes into the middle ear and mastoid cavity. The molecular mechanisms that regulate the pathogenesis of cholesteatomas are currently not fully understood. The present study demonstrated the antigrowth and anti‑invasive effects of let‑7a microRNA (miRNA) on cholesteatoma keratinocytes. Let‑7a inhibited the growth of cholesteatoma keratinocytes through two different mechanisms: Restriction of the proliferation of keratinocytes by promoting cell cycle arrest in the G0/G1 phase, and the induction of apoptosis of the cells. In addition to its role in the inhibition of cell growth, let‑7a suppressed the migration and invasion of cholesteatoma keratinocytes. A mechanistic study showed that let‑7a downregulated the expression of miR‑21. Considering the function of miR‑21 in the regulation of proliferation and apoptosis, let‑7a may control cell proliferation and apoptosis by regulating miR‑21, and its targets, in cholesteatoma keratinocytes. In conclusion, the present study showed that let‑7a downregulates the expression of miR‑21, resulting in the suppression of proliferation and induction of apoptosis. The results of the present study reveal the crucial role of let‑7a miRNA in the inhibition of growth and invasion of cholesteatoma keratinocytes.
Collapse
Affiliation(s)
- Wenjing Zhang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450003, P.R. China
| | - Xiaohua Chen
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450003, P.R. China
| | - Zhaobing Qin
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450003, P.R. China
| |
Collapse
|
16
|
Kuo CL. Etiopathogenesis of acquired cholesteatoma: prominent theories and recent advances in biomolecular research. Laryngoscope 2014; 125:234-40. [PMID: 25123251 DOI: 10.1002/lary.24890] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/24/2014] [Accepted: 07/24/2014] [Indexed: 01/22/2023]
Abstract
OBJECTIVE To review recent biomolecular advances in etiopathogenesis of acquired cholesteatoma. DATA SOURCES MEDLINE via OVID (to March 2014) and PubMed (to March 2014). REVIEW METHODS All articles referring to etiopathogenesis of acquired cholesteatoma were identified in the above databases, from which 89 articles were included in this review. RESULTS The mechanisms underlying the etiopathogenesis of acquired cholesteatoma remain a subject of competing hypotheses. Four theories dominate the debate, including theories of invagination, immigration, squamous metaplasia, and basal cell hyperplasia. However, no single theory has been able to explain the clinical characteristics of all cholesteatoma types: uncoordinated hyperproliferation, invasion, migration, altered differentiation, aggressiveness, and recidivism. Modern technologies have prompted a number of researchers to seek explanations at the molecular level. First, cholesteatomas could be considered an example of uncontrolled cell growth, capable of altering the balance toward cellular hyperproliferation and enhancing the capacity for invasion and osteolysis. Second, the dysregulation of cell growth control involves internal genomic or epigenetic alterations and external stimuli, which induce excessive host immune response to inflammatory and infectious processes. This comprises several complex and dynamic pathophysiologic changes that involve extracellular and intracellular signal transduction cascades. CONCLUSIONS This article summarizes the existing theories and provides conceptual insights into the etiopathogenesis of acquired cholesteatoma, with the aim of stimulating continued efforts to develop a nonsurgical means of treating the disorder.
Collapse
Affiliation(s)
- Chin-Lung Kuo
- Department of Otolaryngology-Head and Neck Surgery, Taipei Veterans General Hospital; Department of Otolaryngology, National Yang-Ming University School of Medicine; Institute of Brain Science, National Yang-Ming University; Department of Otolaryngology, National Defense Medical Center, Taipei, Taiwan, R.O.C.; Department of Otolaryngology, Taoyuan Armed Forces General Hospital, Taoyuan, Taiwan, R.O.C
| |
Collapse
|
17
|
Anderson G, Maes M. Redox Regulation and the Autistic Spectrum: Role of Tryptophan Catabolites, Immuno-inflammation, Autoimmunity and the Amygdala. Curr Neuropharmacol 2014; 12:148-67. [PMID: 24669209 PMCID: PMC3964746 DOI: 10.2174/1570159x11666131120223757] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 08/18/2013] [Accepted: 11/02/2013] [Indexed: 12/12/2022] Open
Abstract
The autistic spectrum disorders (ASD) form a set of multi-faceted disorders with significant genetic, epigenetic and environmental determinants. Oxidative and nitrosative stress (O&NS), immuno-inflammatory pathways, mitochondrial dysfunction and dysregulation of the tryptophan catabolite (TRYCATs) pathway play significant interactive roles in driving the early developmental etiology and course of ASD. O&NS interactions with immuno-inflammatory pathways mediate their effects centrally via the regulation of astrocyte and microglia responses, including regional variations in TRYCATs produced. Here we review the nature of these interactions and propose an early developmental model whereby different ASD genetic susceptibilities interact with environmental and epigenetic processes, resulting in glia biasing the patterning of central interarea interactions. A role for decreased local melatonin and N-acetylserotonin production by immune and glia cells may be a significant treatment target.
Collapse
Affiliation(s)
| | - Michael Maes
- Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand
- Department of Psychiatry, Deakin University, Geelong, Australia
| |
Collapse
|