1
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Liu L, Luo Q, Xu Q, Xiong Y, Deng H. Limb-bud and heart development (LBH) contributes to glioma progression in vitro and in vivo. FEBS Open Bio 2021; 12:211-220. [PMID: 34739189 PMCID: PMC8727945 DOI: 10.1002/2211-5463.13325] [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: 12/22/2020] [Revised: 05/06/2021] [Accepted: 11/03/2021] [Indexed: 11/06/2022] Open
Abstract
Glioma is the predominant brain malignancy and is correlated with high mortality and severe morbidity. The transcription factor limb‐bud and heart (LBH) has been reported to be involved in the development of several cancers, although its role in glioma development remains elusive. Here, we examined the effect of LBH on glioma progression. The expression of LBH was increased in glioma samples from The Cancer Genome Atlas database, and upregulation of LBH was observed to be correlated with the poor survival of glioma patients. We also report that expression of LBH was elevated in clinical glioma tissues compared to adjacent normal tissues, and was also enhanced in glioma cell lines. LBH promotes proliferation and inhibits cell cycle arrest and apoptosis in glioma cells. In addition, LBH increased the migration and invasion of glioma cells in vitro. Moreover, tumorigenicity analysis revealed that LBH could promote the tumor growth of glioma cells in vivo. In conclusion, our findings suggest that LBH contributes to glioma progression in vitro and in vivo. Our findings provide new insights into the mechanism by which LBH promotes the development of glioma, improving our understanding of the correlation between LBH with cancer. LBH may have potential as a target for glioma therapy.
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Affiliation(s)
- Luotong Liu
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qinglian Luo
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qian Xu
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Yu Xiong
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Huajiang Deng
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou, China
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2
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Voigt AP, Mullin NK, Whitmore SS, DeLuca AP, Burnight ER, Liu X, Tucker BA, Scheetz TE, Stone EM, Mullins RF. Human photoreceptor cells from different macular subregions have distinct transcriptional profiles. Hum Mol Genet 2021; 30:1543-1558. [PMID: 34014299 PMCID: PMC8330894 DOI: 10.1093/hmg/ddab140] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 12/17/2022] Open
Abstract
The human neural retina is a light sensitive tissue with remarkable spatial and cellular organization. Compared with the periphery, the central retina contains more densely packed cone photoreceptor cells with unique morphologies and synaptic wiring. Some regions of the central retina exhibit selective degeneration or preservation in response to retinal disease and the basis for this variation is unknown. In this study, we used both bulk and single-cell RNA sequencing to compare gene expression within concentric regions of the central retina. We identified unique gene expression patterns of foveal cone photoreceptor cells, including many foveal-enriched transcription factors. In addition, we found that the genes RORB1, PPFIA1 and KCNAB2 are differentially spliced in the foveal, parafoveal and macular regions. These results provide a highly detailed spatial characterization of the retinal transcriptome and highlight unique molecular features of different retinal regions.
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Affiliation(s)
- Andrew P Voigt
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Nathaniel K Mullin
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - S Scott Whitmore
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Adam P DeLuca
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Erin R Burnight
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Xiuying Liu
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Budd A Tucker
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Todd E Scheetz
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Edwin M Stone
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
| | - Robert F Mullins
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA 52242, USA.,Institute for Vision Research, the University of Iowa, Iowa City, IA 52242, USA
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3
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Liu H, Giffen KP, Grati M, Morrill SW, Li Y, Liu X, Briegel KJ, He DZ. Transcription co-factor LBH is necessary for the survival of cochlear hair cells. J Cell Sci 2021; 134:237781. [PMID: 33674448 DOI: 10.1242/jcs.254458] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/11/2021] [Indexed: 11/20/2022] Open
Abstract
Hearing loss affects ∼10% of adults worldwide. Most sensorineural hearing loss is caused by the progressive loss of mechanosensitive hair cells (HCs) in the cochlea. The molecular mechanisms underlying HC maintenance and loss remain poorly understood. LBH, a transcription co-factor implicated in development, is abundantly expressed in outer hair cells (OHCs). We used Lbh-null mice to identify its role in HCs. Surprisingly, Lbh deletion did not affect differentiation and the early development of HCs, as nascent HCs in Lbh knockout mice had normal looking stereocilia. The stereocilia bundle was mechanosensitive and OHCs exhibited the characteristic electromotility. However, Lbh-null mice displayed progressive hearing loss, with stereocilia bundle degeneration and OHC loss as early as postnatal day 12. RNA-seq analysis showed significant gene enrichment of biological processes related to transcriptional regulation, cell cycle, DNA damage/repair and autophagy in Lbh-null OHCs. In addition, Wnt and Notch pathway-related genes were found to be dysregulated in Lbh-deficient OHCs. Our study implicates, for the first time, loss of LBH function in progressive hearing loss, and demonstrates a critical requirement of LBH in promoting HC survival in adult mice.
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Affiliation(s)
- Huizhan Liu
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA
| | - Kimberlee P Giffen
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA
| | - M'Hamed Grati
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Seth W Morrill
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA
| | - Yi Li
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA.,Department of Otorhinolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, 100730 Beijing, China
| | - Xuezhong Liu
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Karoline J Briegel
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - David Z He
- Department of Biomedical Sciences, Creighton University School of Medicine, Omaha, NE 68178, USA
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4
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Wang M, Du L, Lee AC, Li Y, Qin H, He J. Different lineage contexts direct common pro-neural factors to specify distinct retinal cell subtypes. J Cell Biol 2021; 219:151968. [PMID: 32699896 PMCID: PMC7480095 DOI: 10.1083/jcb.202003026] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 05/13/2020] [Accepted: 06/04/2020] [Indexed: 02/08/2023] Open
Abstract
How astounding neuronal diversity arises from variable cell lineages in vertebrates remains mostly elusive. By in vivo lineage tracing of ∼1,000 single zebrafish retinal progenitors, we identified a repertoire of subtype-specific stereotyped neurogenic lineages. Remarkably, within these stereotyped lineages, GABAergic amacrine cells were born with photoreceptor cells, whereas glycinergic amacrine cells were born with OFF bipolar cells. More interestingly, post-mitotic differentiation blockage of GABAergic and glycinergic amacrine cells resulted in their respecification into photoreceptor and bipolar cells, respectively, suggesting lineage constraint in cell subtype specification. Using single-cell RNA-seq and ATAC-seq analyses, we further identified lineage-specific progenitors, each defined by specific transcription factors that exhibited characteristic chromatin accessibility dynamics. Finally, single pro-neural factors could specify different neuron types/subtypes in a lineage-dependent manner. Our findings reveal the importance of lineage context in defining neuronal subtypes and provide a demonstration of in vivo lineage-dependent induction of unique retinal neuron subtypes for treatment purposes.
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Affiliation(s)
- Mei Wang
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
| | - Lei Du
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
| | - Aih Cheun Lee
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Yan Li
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
| | - Huiwen Qin
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
| | - Jie He
- State Key Laboratory of Neuroscience, Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.,Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai, China
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5
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Zeng S, Zhang T, Madigan MC, Fernando N, Aggio-Bruce R, Zhou F, Pierce M, Chen Y, Huang L, Natoli R, Gillies MC, Zhu L. Interphotoreceptor Retinoid-Binding Protein (IRBP) in Retinal Health and Disease. Front Cell Neurosci 2020; 14:577935. [PMID: 33328889 PMCID: PMC7710524 DOI: 10.3389/fncel.2020.577935] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/21/2020] [Indexed: 02/05/2023] Open
Abstract
Interphotoreceptor retinoid-binding protein (IRBP), also known as retinol binding protein 3 (RBP3), is a lipophilic glycoprotein specifically secreted by photoreceptors. Enriched in the interphotoreceptor matrix (IPM) and recycled by the retinal pigment epithelium (RPE), IRBP is essential for the vision of all vertebrates as it facilitates the transfer of retinoids in the visual cycle. It also helps to transport lipids between the RPE and photoreceptors. The thiol-dependent antioxidant activity of IRBP maintains the delicate redox balance in the normal retina. Thus, its dysfunction is suspected to play a role in many retinal diseases. We have reviewed here the latest research on IRBP in both retinal health and disease, including the function and regulation of IRBP under retinal stress in both animal models and the human retina. We have also explored the therapeutic potential of targeting IRBP in retinal diseases. Although some technical barriers remain, it is possible that manipulating the expression of IRBP in the retina will rescue or prevent photoreceptor degeneration in many retinal diseases.
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Affiliation(s)
- Shaoxue Zeng
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia.,Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Zhang
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Michele C Madigan
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia.,School of Optometry and Vision Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Nilisha Fernando
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia
| | - Riemke Aggio-Bruce
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia.,The Australian National University Medical School, The Australian National University, Acton, ACT, Australia
| | - Fanfan Zhou
- Sydney Pharmacy School, The University of Sydney, Sydney, NSW, Australia
| | - Matthew Pierce
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Yingying Chen
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia.,Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Lianlin Huang
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia.,School of Optometry and Vision Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Acton, ACT, Australia.,The Australian National University Medical School, The Australian National University, Acton, ACT, Australia
| | - Mark C Gillies
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
| | - Ling Zhu
- Save Sight Institute, The University of Sydney, Sydney, NSW, Australia
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6
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Shi WJ, Huang GY, Jiang YX, Ma DD, Chen HX, Huang MZ, Hou LP, Xie L, Ying GG. Medroxyprogesterone acetate affects eye growth and the transcription of associated genes in zebrafish. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 193:110371. [PMID: 32114246 DOI: 10.1016/j.ecoenv.2020.110371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 06/10/2023]
Abstract
Medroxyprogesterone acetate (MPA) is a widely used synthetic progestin in contraception pills and hormone replacement therapy. However, its effects on eye growth and development and function were largely unknown. In this study, the transcription of genes in the Notch signaling pathway and the visual cycle network were evaluated after chronic MPA exposure at 4.32 (L), 42.0 (M), and 424 (H) ng L-1 for 120 days in zebrafish. Meanwhile, the histology of the eyes was also examined. Transcriptional results showed that MPA at all three concentrations significantly increased the transcription of notch1a, dll4, jag1a, ctbp1 and rbpjb (key genes in the Notch signaling pathway) in the eyes of females. The up-regulation of noth1a, ctbp1 and kat2b was also observed in the eyes of males exposed to MPA at 424 ng L-1. In the visual cycle pathway, MPA increased the transcription of opn1sw1, opn1sw2, arr3a and rpe65a in the eyes of females from the M and H treatments. Histopathological analysis showed that exposure to 42.0 ng L-1 of MPA increased the thicknesses of inner nuclear layer in females and outer segment in males. Moreover, exposure to 424 ng L-1 of MPA increased the lens diameter in females. These results indicated that chronic MPA exposure affected the transcription of genes in the Notch signaling and in the visual cycle pathways, resulting in overgrowth of the eyes and interference of the eye functions. This study suggests that MPA pose a risk to fitness and survival of zebrafish in areas where MPA contamination exists.
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Affiliation(s)
- Wen-Jun Shi
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China; State Key Laboratory of Organic Geochemistry, CAS Research Centre for Pearl River Delta Environment Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Guo-Yong Huang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Yu-Xia Jiang
- State Key Laboratory of Organic Geochemistry, CAS Research Centre for Pearl River Delta Environment Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Dong-Dong Ma
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Hong-Xing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Ming-Zhi Huang
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China
| | - Ling-Ping Hou
- School of Life Sciences, Guangzhou University, Guangzhou, 510655, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
| | - Guang-Guo Ying
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China; School of Environment, South China Normal University, University Town, Guangzhou 510006, China.
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7
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Jiang Y, Zhou J, Zou D, Hou D, Zhang H, Zhao J, Li L, Hu J, Zhang Y, Jing Z. Overexpression of Limb-Bud and Heart (LBH) promotes angiogenesis in human glioma via VEGFA-mediated ERK signalling under hypoxia. EBioMedicine 2019; 48:36-48. [PMID: 31631037 PMCID: PMC6838451 DOI: 10.1016/j.ebiom.2019.09.037] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/07/2019] [Accepted: 09/18/2019] [Indexed: 01/30/2023] Open
Abstract
Background Glioma is the most common primary malignant tumor in the central nervous system with frequent hypoxia and angiogenesis. Limb-Bud and Heart (LBH) is a highly conserved transcription cofactor that participates in embryonic development and tumorigenesis. Methods The conditioned media from LBH regulated human glioma cell lines and patient-derived glioma stem cells (GSCs) were used to treat the human brain microvessel endothelial cells (hBMECs). The function of LBH on angiogenesis were examined through methods of MTS assay, Edu assay, TUNEL assay, western blotting analysis, qPCR analysis, luciferase reporter assay and xenograft experiment. Findings Our study found for the first time that LBH was overexpressed in gliomas and was associated with a poor prognosis. LBH overexpression participated in the angiogenesis of gliomas via the vascular endothelial growth factor A (VEGFA)-mediated extracellular signal-regulated kinase (ERK) signalling pathway in human brain microvessel endothelial cells (hBMECs). Rapid proliferation of gliomas can lead to tissue hypoxia and hypoxia inducible factor-1 (HIF-1) activation, while HIF-1 can directly transcriptionally regulate the expression of LBH and result in a self-reinforcing cycle. Interpretation LBH may be a possible treatment target to break the vicious cycle in glioma treatment.
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Affiliation(s)
- Yang Jiang
- Department of Neurosurgery, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China; Department of Neurosurgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai 200080, China
| | - Jinpeng Zhou
- Department of Neurosurgery, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China
| | - Dan Zou
- The First Laboratory of Cancer Institute, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China
| | - Dianqi Hou
- Department of Neurosurgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai 200080, China
| | - Haiying Zhang
- International Education College, Liaoning University of Traditional Chinese Medicine, No. 79 Chongshan East Road, Shenyang, Liaoning 110042, China
| | - Junshuang Zhao
- Department of Neurosurgery, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China
| | - Long Li
- Department of Neurosurgery, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China
| | - Jiangfeng Hu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100 Haining Road, Shanghai 200080, China
| | - Ye Zhang
- The First Laboratory of Cancer Institute, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China.
| | - Zhitao Jing
- Department of Neurosurgery, the First Hospital of China Medical University, No. 155, North Nanjing Street, Shenyang, Liaoning 110001, China.
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8
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Ahi EP, Singh P, Duenser A, Gessl W, Sturmbauer C. Divergence in larval jaw gene expression reflects differential trophic adaptation in haplochromine cichlids prior to foraging. BMC Evol Biol 2019; 19:150. [PMID: 31340758 PMCID: PMC6657104 DOI: 10.1186/s12862-019-1483-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 07/18/2019] [Indexed: 12/11/2022] Open
Abstract
Background Understanding how variation in gene expression contributes to morphological diversity is a major goal in evolutionary biology. Cichlid fishes from the East African Great lakes exhibit striking diversity in trophic adaptations predicated on the functional modularity of their two sets of jaws (oral and pharyngeal). However, the transcriptional basis of this modularity is not so well understood, as no studies thus far have directly compared the expression of genes in the oral and pharyngeal jaws. Nor is it well understood how gene expression may have contributed to the parallel evolution of trophic morphologies across the replicate cichlid adaptive radiations in Lake Tanganyika, Malawi and Victoria. Results We set out to investigate the role of gene expression divergence in cichlid fishes from these three lakes adapted to herbivorous and carnivorous trophic niches. We focused on the development stage prior to the onset of exogenous feeding that is critical for understanding patterns of gene expression after oral and pharyngeal jaw skeletogenesis, anticipating environmental cues. This framework permitted us for the first time to test for signatures of gene expression underlying jaw modularity in convergent eco-morphologies across three independent adaptive radiations. We validated a set of reference genes, with stable expression between the two jaw types and across species, which can be important for future studies of gene expression in cichlid jaws. Next we found evidence of modular and non-modular gene expression between the two jaws, across different trophic niches and lakes. For instance, prdm1a, a skeletogenic gene with modular anterior-posterior expression, displayed higher pharyngeal jaw expression and modular expression pattern only in carnivorous species. Furthermore, we found the expression of genes in cichlids jaws from the youngest Lake Victoria to exhibit low modularity compared to the older lakes. Conclusion Overall, our results provide cross-species transcriptional comparisons of modularly-regulated skeletogenic genes in the two jaw types, implicating expression differences which might contribute to the formation of divergent trophic morphologies at the stage of larval independence prior to foraging. Electronic supplementary material The online version of this article (10.1186/s12862-019-1483-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria. .,Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A, 75236, Uppsala, Sweden.
| | - Pooja Singh
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Anna Duenser
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Wolfgang Gessl
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | - Christian Sturmbauer
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
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9
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Yu R, Li Z, Zhang C, Song H, Deng M, Sun L, Xu L, Che X, Hu X, Qu X, Liu Y, Zhang Y. Elevated limb-bud and heart development (LBH) expression indicates poor prognosis and promotes gastric cancer cell proliferation and invasion via upregulating Integrin/FAK/Akt pathway. PeerJ 2019; 7:e6885. [PMID: 31119084 PMCID: PMC6507893 DOI: 10.7717/peerj.6885] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/31/2019] [Indexed: 12/20/2022] Open
Abstract
The limb-bud and heart development (LBH) gene is a highly conserved, tissue-specific transcription cofactor in vertebrates that regulates multiple key genes in embryonic development. The role of LBH in various cancer types is still controversial, and its specific role and molecular mechanism in the oncogenesis of gastric cancer (GC) remains largely unexplored. In the present study, the prognostic significance and clinicopathological characteristics of LBH in GC was determined. The LBH mRNA expression was first investigated in four independent public datasets (TCGA-STAD, GSE15459, GSE29272, and GSE62254) and then validated with our samples at the protein level. LBH was overexpressed at both the mRNA and protein levels in cancer compared with normal tissues. High LBH expression was correlated with advanced T, N, and M stages. Kaplan–Meier analysis and log-rank test indicated that higher LBH expression was statistically correlated with shorter overall survival (OS) in the public datasets and our study samples. Univariate and multivariate Cox regression analysis showed that LBH was an independent prognostic biomarker for survival in TCGA-STAD, GSE15459, GSE62254 cohorts, and our GC patients. In vitro experiments showed that knockdown of LBH can significantly inhibit the proliferation and invasion of HGC-27 cells, while overexpression of LBH can significantly enhance the proliferation and invasion of BGC-823 cells. Gene Set Enrichment Analysis (GSEA), Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomics (KEGG) indicated that high LBH expression is associated with the PI3K-Akt pathway, focal adhesion, and extracellular matrix (ECM)-receptor interaction. Western blot analysis showed that knockdown of LBH significantly inhibited the expression of integrin α5, integrin β1, p-FAK, and p-Akt. Therefore, results from the present study indicate that LBH is a potential independent prognostic biomarker and promotes proliferation and invasion of GC cells by activating the integrin/FAK/Akt pathway.
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Affiliation(s)
- Ruoxi Yu
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Zhi Li
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Chuang Zhang
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Huicong Song
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Mingming Deng
- Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China.,Department of Respiratory and Infectious Disease of Geriatrics, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Liping Sun
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ling Xu
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Xiaofang Che
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Xuejun Hu
- Department of Respiratory and Infectious Disease of Geriatrics, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiujuan Qu
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Yunpeng Liu
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
| | - Ye Zhang
- Department of Medical Oncology, the First Affiliated Hospital of China Medical University, Shenyang, China.,Key Laboratory of Anticancer Drugs and Biotherapy, Shenyang, China
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10
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Mechanisms of Photoreceptor Patterning in Vertebrates and Invertebrates. Trends Genet 2017; 32:638-659. [PMID: 27615122 DOI: 10.1016/j.tig.2016.07.004] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/25/2016] [Accepted: 07/28/2016] [Indexed: 11/22/2022]
Abstract
Across the animal kingdom, visual systems have evolved to be uniquely suited to the environments and behavioral patterns of different species. Visual acuity and color perception depend on the distribution of photoreceptor (PR) subtypes within the retina. Retinal mosaics can be organized into three broad categories: stochastic/regionalized, regionalized, and ordered. We describe here the retinal mosaics of flies, zebrafish, chickens, mice, and humans, and the gene regulatory networks controlling proper PR specification in each. By drawing parallels in eye development between these divergent species, we identify a set of conserved organizing principles and transcriptional networks that govern PR subtype differentiation.
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11
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Musser JM, Arendt D. Loss and gain of cone types in vertebrate ciliary photoreceptor evolution. Dev Biol 2017; 431:26-35. [DOI: 10.1016/j.ydbio.2017.08.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 08/28/2017] [Accepted: 08/30/2017] [Indexed: 01/09/2023]
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12
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Liu Z, Zhang XJ, Wang W, Zhang J, Li Z, Gui JF. Molecular characterization and expression of an oocyte-specific histone stem-loop binding protein in Carassius gibelio. Comp Biochem Physiol B Biochem Mol Biol 2015; 190:46-53. [DOI: 10.1016/j.cbpb.2015.08.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 06/30/2015] [Accepted: 08/25/2015] [Indexed: 11/25/2022]
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13
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Ghosh D, Haswell KM, Sprada M, Gonzalez-Fernandez F. Structure of zebrafish IRBP reveals fatty acid binding. Exp Eye Res 2015; 140:149-158. [PMID: 26344741 DOI: 10.1016/j.exer.2015.08.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 08/22/2015] [Accepted: 08/31/2015] [Indexed: 10/23/2022]
Abstract
Interphotoreceptor retinoid-binding protein (IRBP) has a remarkable role in targeting and protecting all-trans and 11-cis retinol, and 11-cis retinal during the rod and cone visual cycles. Little is known about how the correct retinoid is efficiently delivered and removed from the correct cell at the required time. It has been proposed that different fatty composition at that the outer-segments and retinal-pigmented epithelium have an important role is regulating the delivery and uptake of the visual cycle retinoids at the cell-interphotoreceptor-matrix interface. Although this suggests intriguing mechanisms for the role of local fatty acids in visual-cycle retinoid trafficking, nothing is known about the structural basis of IRBP-fatty acid interactions. Such regulation may be mediated through IRBP's unusual repeating homologous modules, each containing about 300 amino acids. We have been investigating structure-function relationships of Zebrafish IRBP (zIRBP), which has only two tandem modules (z1 and z2), as a model for the more complex four-module mammalian IRBP's. Here we report the first X-ray crystal structure of a teleost IRBP, and the only structure with a bound ligand. The X-ray structure of z1, determined at 1.90 Å resolution, reveals a two-domain organization of the module (domains A and B). A deep hydrophobic pocket with a single bound molecule of oleic acid was identified within the N-terminal domain A. In fluorescence titrations assays, oleic acid displaced all-trans retinol from zIRBP. Our study, which provides the first structure of an IRBP with bound ligand, supports a potential role for fatty acids in regulating retinoid binding.
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Affiliation(s)
- Debashis Ghosh
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA.
| | - Karen M Haswell
- Department of Pharmacology, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Molly Sprada
- SUNY Eye Institute, State University of New York, USA
| | - Federico Gonzalez-Fernandez
- Medical Research & Development Service, G.V. (Sonny) Veterans Affairs Medical Center, Jackson, MS, USA; Departments of Ophthalmology and Pathology, University of Mississippi Medical Center, Jackson, MS, USA; SUNY Eye Institute, State University of New York, USA.
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