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Sun YM, Yang WL, Rogaeva E, Lang AE, Wang J, Zhang M. Genetic and Epigenetic Study of Monozygotic Twins Affected by Parkinson’s Disease. CLINICAL AND TRANSLATIONAL NEUROSCIENCE 2023. [DOI: 10.3390/ctn7020011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023] Open
Abstract
Background: Genetic and epigenetic modifiers of age at onset of Parkinson’s disease (PD) are largely unknown. It remains unclear whether DNA methylation (DNAm) age acceleration is linked to age at onset in PD patients of different ethnicities with a similar genetic background. We aim to characterize the clinical, genomic and epigenomic features of three pairs of Chinese monozygotic twins discordant for PD onset by up to 10 years. Methods: We conducted whole genome sequencing, multiplex ligation-dependent probe amplification and genome-wide DNAm array to evaluate the three pairs of Chinese monozygotic twins discordant for age at onset of PD (families A–C). Results: We identified two heterozygous PRKN mutations (exon 2–4 deletion and p.Met1Thr) in PD affected members of one family. Somatic mutation analyses of investigated families did not reveal any variants that could explain the phenotypic discordance in the twin pairs. Of note, our epigenetic study revealed that the twins with earlier-onset had a trend of faster DNAm age acceleration than the later-onset/asymptomatic twins, but without statistical significance. Conclusion: The link between DNAm age acceleration and PD onset in Chinese patients should be interpreted with cautious, and need to be further verified in an extended PD cohort with similar genetic background.
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Affiliation(s)
- Yi-Min Sun
- Department of Neurology and National Research Center for Aging and Medicine & National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Wan-Li Yang
- Department of Medical Genetics, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai 200090, China
| | - Ekaterina Rogaeva
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, 60 Leonard Ave., Toronto, ON M5T 2S8, Canada
- Division of Neurology, University of Toronto, Toronto, ON M5R 0A3, Canada
| | - Anthony E. Lang
- Division of Neurology, University of Toronto, Toronto, ON M5R 0A3, Canada
- Edmond J. Safra Program in Parkinson’s Disease and Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, Toronto, ON M5T 2S8, Canada
- Krembil Brain Institute, Toronto, ON M5G 2C4, Canada
| | - Jian Wang
- Department of Neurology and National Research Center for Aging and Medicine & National Center for Neurological Disorders, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ming Zhang
- Department of Medical Genetics, The First Rehabilitation Hospital of Shanghai, School of Medicine, Tongji University, Shanghai 200090, China
- Clinical Center for Brain and Spinal Cord Research, Tongji University, Shanghai 200092, China
- Institute for Advanced Study, Tongji University, Shanghai 200092, China
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Huang J, Xu W, Liu P, Liu Y, Shen C, Liu S, Wang Y, Wang J, Zhang T, He Y, Cheng C, Yang L, Zhang W, Tian X, Xu KF. Gene mutations in sporadic lymphangioleiomyomatosis and genotype–phenotype correlation analysis. BMC Pulm Med 2022; 22:354. [PMID: 36117164 PMCID: PMC9482747 DOI: 10.1186/s12890-022-02154-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/13/2022] [Indexed: 11/10/2022] Open
Abstract
Background Sporadic lymphangioleiomyomatosis (S-LAM) is a rare neoplasm with heterogeneous clinical features that is conventionally considered to be related to TSC2. This study serves to elucidate the mutation landscape and potential correlation between S-LAM genomic profiles and clinical phenotypes. Methods Genomic profiles of 22 S-LAM patients were obtained by sequencing genomic DNA and cell-free DNA from various specimens using an NGS (next-generation sequencing)-based tumor-driver gene panel. Detected mutations were summarized. Symptoms, serum vascular endothelial growth factor D (VEGF-D) values, pulmonary function, and six-minute walk distance (6MWD) were compared among groups with different TSC2 status and genotypes to analyze genotype–phenotype correlations. Results 67 Variants in 43 genes were detected, with a TSC2 mutation detection rate of 68.2%. The TSC2 detection rate was similar in specimens obtained either through transbronchial lung biopsy (TBLB) or surgical lung biopsy (70.0% vs. 69.2%, p > 0.05). A novel mutation in VEZF1 (c.A659G) was detected in four participants and may represent a mild disease state. TSC2 mutation was significantly related to a shorter 6MWD (p < 0.05), and a higher percentage of VEGF-D over 800 pg/mL (p < 0.05); stop-gain mutation was significantly related to a higher prevalence of pneumothorax. Conclusions Tumor-driver mutations in genes other than TSC2 may have a role in S-LAM, and TBLB specimens are practical alternatives for genomic analysis. TSC2 mutation detectability and types are related to the disease severity and phenotypes of S-LAM. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02154-0.
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Sathirareuangchai S, Weon JL, Tintle S, Batra K, Yan SX, Torrealba JR. Recurrent lymphangioleiomyomatosis in a lung allograft with COVID-19: autopsy case report and literature review. SURGICAL AND EXPERIMENTAL PATHOLOGY 2021. [PMCID: PMC8402968 DOI: 10.1186/s42047-021-00095-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Lymphangioleiomyomatosis (LAM) is a rare neoplastic disease of the lung with a characteristic feature of diffuse cystic changes in bilateral lungs. Lung transplantation is considered to be one of the effective treatments in end stage disease. Patients with LAM who underwent lung transplant tend to have more favorable outcome compared to other end stage lung diseases. We report a case of a female patient who was diagnosed with LAM and received bilateral lung transplantation at 45 years of age. Subsequent allograft biopsies were significant for mild acute cellular rejection (Grade A2), for which the immunosuppressive regimen was adjusted accordingly. At 7 years post-transplant, she presented with shortness of breath, cough, and fatigue, and diagnosed with a viral infection. Her chest imaging was unremarkable. However, a transbronchial biopsy was performed to rule out rejection and revealed foci of spindle cells proliferation, with positive HMB-45 and smooth muscle actin immunohistochemical studies, confirming the diagnosis of recurrent LAM. After she was discharged, she was re-admitted 1 week later with severe COVID-19. Her clinical course was complicated by acute respiratory distress syndrome, respiratory failure, and gastrointestinal hemorrhage. The patient passed away on day 36 of hospital stay. Autopsy was requested and confirmed the pathology of recurrent LAM and diffuse alveolar damage from COVID-19.
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Zhang M, Wang S. Roles of circular RNAs in colorectal cancer. Oncol Lett 2021; 22:602. [PMID: 34188704 PMCID: PMC8227629 DOI: 10.3892/ol.2021.12863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/12/2021] [Indexed: 02/05/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common types of malignant cancer worldwide and poses a significant burden on both the individual and healthcare systems. Despite advances in treatment options, advanced-stage CRC has a high mortality rate due to its heterogeneity, metastatic potential and/or delay in diagnosis. In recent years, an increasing number of studies have indicated that circular RNAs (circRNAs) serve important roles in several types of cancer, including CRC. Recent studies have revealed that circRNAs are aberrantly expressed in CRC tissues and function as oncogenic or tumor suppressive regulators of CRC carcinogenesis and development. Numerous circRNAs have been associated with the clinicopathological features of patients with CRC and have been considered as potential biomarkers for the diagnosis and prognosis of CRC, as well as targets for treatment. However, a deeper understanding of their potential function is required. In the present review, the current body of knowledge on the biogenesis and functions of CRC-associated circRNAs, and their potential value in clinical applications, such as in CRC diagnosis, prognosis and treatment, is discussed and summarized.
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Affiliation(s)
- Mingying Zhang
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China
- Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, P.R. China
- Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
| | - Shubin Wang
- Department of Oncology, Peking University Shenzhen Hospital, Shenzhen, Guangdong 518036, P.R. China
- Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute of Shenzhen-PKU-HKUST Medical Center, Shenzhen, Guangdong 518036, P.R. China
- Correspondence to: Professor Shubin Wang, Department of Oncology, Peking University Shenzhen Hospital, 1120 Lianhua Road, Futian, Shenzhen, Guangdong 518036, P.R. China, E-mail:
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Hua W, Yang W, Gu J, Wu J, Wang W, Liu Y, Zhu H, Zhou M, Qu J, Fang Y. Risk factors for right ventricular dysfunction in patients with lymphangioleiomyomatosis. Int J Cardiovasc Imaging 2020; 37:439-448. [PMID: 32929608 DOI: 10.1007/s10554-020-02009-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 08/31/2020] [Indexed: 01/31/2023]
Abstract
Lymphangioleiomyomatosis (LAM) is a rare disease characterized by diffuse cystic lesions of the lung. The present study was designed to evaluate the right ventricular (RV) function in LAM patients via single-beat real-time three-dimensional echocardiography (RT-3DE) and to investigate the factors affecting RV function in LAM patients. According to tricuspid regurgitation velocity (TRV), forty-five female LAM patients [(44.07 ± 10.22) years old] were divided into TRV ≤ 2.8 m/s group (n = 29) and TRV > 2.8 m/s group (n = 16). Relative echocardiography parameters were assessed by conventional transthoracic echocardiography, Doppler tissue imaging (DTI) and RT-3DE, respectively. Pulmonary function tests and the six-minute walk tests (SMWT) were also performed for LAM patients. We found that most of RV functional parameters in LAM patients were worse than that in control patients, although left ventricular dysfunction was not significantly observed. Correlation analysis showed that 3D echocardiographic RV ejection fraction (RVEF) was negatively correlated with pulmonary vascular resistance (PVR), TRV, and the decrease of oxygen saturation (SpO2) post SMWT, and positively correlated with Forced expiratory volume in the first second/forced vital capacity, carbon monoxide diffusion predicted value, SMWT distance, and resting SpO2 in LAM patients. Multivariate stepwise linear regression analysis showed that PVR and SpO2 before SMWT were independent influence factors of RVEF in LAM patients. In this study, we found that RV dysfunction was presented in LAM patients, although left ventricular dysfunction was not significantly obvious. The main influence factors of RVEF were PVR and hypoxia. RT-3DE is a low-cost and noninvasive way to evaluate RV function in LAM patients.
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Affiliation(s)
- Wei Hua
- Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Wenbo Yang
- Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jianing Gu
- Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jialiang Wu
- Department of Respiration, Xiangshan Chinese Medicine Hospital, Shanghai, 200020, China
| | - Wei Wang
- Department of Respiration, Xiangshan Chinese Medicine Hospital, Shanghai, 200020, China
| | - Yanpu Liu
- Department of Respiration, Xiangshan Chinese Medicine Hospital, Shanghai, 200020, China
| | - Hong Zhu
- Department of Respiration, Xiangshan Chinese Medicine Hospital, Shanghai, 200020, China
| | - Min Zhou
- Department of Respiration, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jieming Qu
- Department of Respiration, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Yuehua Fang
- Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
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