|
1
|
Li J, Zeng Q. Trim9 regulates the directional differentiation of retinal Müller cells to retinal ganglion cells. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2023; 48:1561-1571. [PMID: 38432885 PMCID: PMC10929896 DOI: 10.11817/j.issn.1672-7347.2023.230108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Indexed: 03/05/2024]
Abstract
OBJECTIVES Glaucoma is a leading cause of irreversible blindness, and effective therapies to reverse the visual system damage caused by glaucoma are still lacking. Recently, the stem cell therapy enable the repair and regeneration of the damaged retinal neurons, but challenges regarding the source of stem cells remain. This study aims to investigate a protocol that allows the dedifferentiation of Müller cells into retinal stem cells, following by directed differentiation into retinal ganglion cells with high efficiency, and to provide a new method of cellular acquisition for retinal stem cells. METHODS Epidermal cell growth factor and fibroblast growth factor 2 were used to induce the dedifferentiation of rat retinal Müller cells into retinal neural stem cells. Retinal stem cells derived from Müller cells were infected with a Trim9 overexpression lentiviral vector (PGC-FU-Trim9-GFP), and the efficiency of viral infection was assessed by fluorescence microscopy and flow cytometry. Retinoic acid and brain-derived neurotrophic factor treatments were used to induce the differentiation of the retinal stem cells into neurons and glial cells with or without the overexpression of Trim9. The expressions of each cellular marker (GLAST, GS, rhodopsin, PKC, HPC-1, Calbindin, Thy1.1, Brn-3b, Nestin, Pax6) were detected by immunofluorescence, PCR/real-time RT-PCR or Western blotting. RESULTS Rat retinal Müller cells expressed neural stem cells markers (Nestin and Pax6) with the treatment of epidermal cell growth factor and fibroblast growth factor 2. The Thy1.1 positive cell rate of retinal stem cells overexpressing Trim9 was significantly increased, indicating their directional differentiation into retinal ganglion cells after treatment with retinoic acid and brain-derived neurotrophic factor. CONCLUSIONS In this study, rat retinal Müller cells are dedifferentiated into retinal stem cells successfully, and Trim9 promotes the directional differentiation from retinal stem cells to retinal ganglion cells effectively.
Collapse
Affiliation(s)
- Jinxiang Li
- Department of Ophthalmology, First Hospital Affiliated with Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, China.
| | - Qi Zeng
- Department of Ophthalmology, First Hospital Affiliated with Hunan Normal University (Hunan Provincial People's Hospital), Changsha 410005, China.
| |
Collapse
|
|
2
|
Xiang Q, Xu H, Zhan J, Lu S, Li S, Wang Y, Wang Y, He J, Ni Y, Li L, Liu Y, Liu Y. Reply to Mahat, R.K.; Rathore, V. Comment on "Xiang et al. Association between the Triglyceride-Glucose Index and Vitamin D Status in Type 2 Diabetes Mellitus. Nutrients 2023, 15, 639". Nutrients 2023; 15:4069. [PMID: 37764852 PMCID: PMC10535357 DOI: 10.3390/nu15184069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
We are pleased to see that Mahat and Rathore [...].
Collapse
Affiliation(s)
- Qunyan Xiang
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Hui Xu
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Junkun Zhan
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Shuzhen Lu
- Department of Nursing, Hunan Normal University School of Medicine, Changsha 410013, China;
| | - Shuang Li
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Yanjiao Wang
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Yi Wang
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Jieyu He
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Yuqing Ni
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Linsen Li
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Yiyang Liu
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| | - Youshuo Liu
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha 410011, China; (Q.X.); (H.X.); (J.Z.); (S.L.); (Y.W.); (Y.W.); (J.H.); (Y.N.); (L.L.); (Y.L.)
- Institute of Aging and Age-Related Disease Research, Central South University, Changsha 410011, China
| |
Collapse
|
|
3
|
Huang HL, Zhang QX, Huang F, Long XY, Song Z, Xiao B, Li GL, Ma CY, Liu D. TMEM151A variants associated with paroxysmal kinesigenic dyskinesia. Hum Genet 2023; 142:1017-1028. [PMID: 36856871 DOI: 10.1007/s00439-023-02535-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 02/16/2023] [Indexed: 03/02/2023]
Abstract
TMEM151A, located at 11q13.2 and encoding transmembrane protein 151A, was recently reported as causative for autosomal dominant paroxysmal kinesigenic dyskinesia (PKD). Here, through comprehensive analysis of sporadic and familial cases, we expand the clinical and mutation spectrum of PKD. In doing so, we clarify the clinical and genetic features of Chinese PKD patients harboring TMEM151A variants and further explore the relationship between TMEM151A mutations and PKD. Whole exome sequencing was performed on 26 sporadic PKD patients and nine familial PKD pedigrees without PRRT2 variants. Quantitative real-time PCR was used to assess the gene expression of frameshift mutant TMEM151A in a PKD patient. TMEM151A variants reported to date were reviewed. Four TMEM151A variants were detected in four unrelated families with 12 individuals, including a frameshift mutation [c.606_607insA (p.Val203fs)], two missense mutations [c.166G > A (p.Gly56Arg) and c.791T > C (p.Val264Ala)], and a non-pathogenic variant [c.994G > A (p.Gly332Arg)]. The monoallelic frameshift mutation [c.606_607insA (p.Val203fs)] may cause TMEM151A mRNA decay, suggesting a potential pathogenic mechanism of haploinsufficiency. Patients with TMEM151A variants had short-duration attacks and presented with dystonia. Our study provides a detailed clinical description of PKD patients with TMEM151A mutations and reports a new disease-causing mutation, expanding the known phenotypes caused by TMEM151A mutations and providing further detail about the pathoetiology of PKD.
Collapse
Affiliation(s)
- Hua Lin Huang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qing Xia Zhang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Fei Huang
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiao Yan Long
- Department of Neurology, The Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhi Song
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bo Xiao
- Department of Neurology, The Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guo Liang Li
- Department of Neurology, The Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Cai Yu Ma
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Ding Liu
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| |
Collapse
|
|
4
|
Tang J, Zhang J, Lu Y, He J, Wang H, Liu B, Tu C, Li Z. Novel insights into the multifaceted roles of m 6A-modified LncRNAs in cancers: biological functions and therapeutic applications. Biomark Res 2023; 11:42. [PMID: 37069649 PMCID: PMC10111779 DOI: 10.1186/s40364-023-00484-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/11/2023] [Indexed: 04/19/2023] Open
Abstract
N6-methyladenosine (m6A) is considered as the most common and important internal transcript modification in several diseases like type 2 diabetes, schizophrenia and especially cancer. As a main target of m6A methylation, long non-coding RNAs (lncRNAs) have been proved to regulate cellular processes at various levels, including epigenetic modification, transcriptional, post-transcriptional, translational and post-translational regulation. Recently, accumulating evidence suggests that m6A-modified lncRNAs greatly participate in the tumorigenesis of cancers. In this review, we systematically summarized the biogenesis of m6A-modified lncRNAs and the identified m6A-lncRNAs in a variety of cancers, as well as their potential diagnostic and therapeutic applications as biomarkers and therapeutic targets, hoping to shed light on the novel strategies for cancer treatment.
Collapse
Affiliation(s)
- Jinxin Tang
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Xiangya School of Medicine, Central South University, Changsha, Hunan, 410011, China
| | - Jinhui Zhang
- Xiangya School of Medicine, Central South University, Changsha, Hunan, 410011, China
| | - Yu Lu
- Xiangya School of Medicine, Central South University, Changsha, Hunan, 410011, China
| | - Jieyu He
- Department of Geriatrics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Hua Wang
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Xiangya School of Medicine, Central South University, Changsha, Hunan, 410011, China
| | - Binfeng Liu
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China
| | - Chao Tu
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China.
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China.
| | - Zhihong Li
- Department of Orthopaedics, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China.
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, 410011, China.
| |
Collapse
|