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Guha D, Singh V, Nandi S, Ramos EI, Gadad SS, Das C. ZMYND8 Is a Regulator of Sonic Hedgehog Signaling in ATRA-Mediated Differentiation of Neuroblastoma Cells. Biochemistry 2024; 63:1534-1542. [PMID: 38804064 DOI: 10.1021/acs.biochem.4c00145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Zinc Finger MYND (Myeloid, Nervy, and DEAF-1) type containing 8 (ZMYND8) is a crucial epigenetic regulator that plays a multifaceted role in governing a spectrum of vital cellular processes, encompassing proliferation, apoptosis, migration, tumor suppression, and differentiation. It has emerged as a key player in neuronal differentiation by orchestrating the expression of neuronal lineage-committed genes. The present study uncovers the role of ZMYND8 in regulating the Sonic Hedgehog (SHH) signaling axis, which is crucial for neuronal differentiation. Genetic deletion of ZMYND8 leads to a significant reduction in SHH pathway genes, GLI1, and PTCH1 expression during all-trans-retinoic acid (ATRA)-induced differentiation. ZMYND8 and RNA pol II S5P are found to co-occupy the GLI1 and PTCH1 gene promoters, positively impacting their gene transcription upon ATRA treatment. Interestingly, ZMYND8 is found to counteract the inhibitory effects of Cyclopamine that block the upstream SHH pathway protein SMO, resulting in enhanced neurite formation in neuroblastoma cells following their treatment with ATRA. These results indicate that ZMYND8 is an epigenetic regulator of the SHH signaling pathway and has tremendous therapeutic potential in ATRA-mediated differentiation of neuroblastoma.
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Affiliation(s)
- Deblina Guha
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhannagar, Kolkata 700064, West Bengal, India
| | - Vipin Singh
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhannagar, Kolkata 700064, West Bengal, India
- Homi Bhabha National Institute, 2nd Floor, BARC Training School Complex, Anushaktinagar, Mumbai 400094, Maharashtra, India
| | - Sandhik Nandi
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhannagar, Kolkata 700064, West Bengal, India
- Homi Bhabha National Institute, 2nd Floor, BARC Training School Complex, Anushaktinagar, Mumbai 400094, Maharashtra, India
| | - Enrique I Ramos
- Center of Emphasis in Cancer, Department of Molecular and Translational Medicine, Texas Tech University Health Sciences Center El Paso, 5001 El Paso Drive, El Paso, Texas 79905, United States
| | - Shrikanth S Gadad
- Center of Emphasis in Cancer, Department of Molecular and Translational Medicine, Texas Tech University Health Sciences Center El Paso, 5001 El Paso Drive, El Paso, Texas 79905, United States
- Mays Cancer Center, UT Health San Antonio MD Anderson Cancer Center, San Antonio, Texas 78229, United States
| | - Chandrima Das
- Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, Sector-I, Block-AF, Bidhannagar, Kolkata 700064, West Bengal, India
- Homi Bhabha National Institute, 2nd Floor, BARC Training School Complex, Anushaktinagar, Mumbai 400094, Maharashtra, India
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Berrino C, Omar A. Unravelling the Mysteries of the Sonic Hedgehog Pathway in Cancer Stem Cells: Activity, Crosstalk and Regulation. Curr Issues Mol Biol 2024; 46:5397-5419. [PMID: 38920995 PMCID: PMC11202538 DOI: 10.3390/cimb46060323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 05/24/2024] [Accepted: 05/25/2024] [Indexed: 06/27/2024] Open
Abstract
The Sonic Hedgehog (Shh) signalling pathway plays a critical role in normal development and tissue homeostasis, guiding cell differentiation, proliferation, and survival. Aberrant activation of this pathway, however, has been implicated in the pathogenesis of various cancers, largely due to its role in regulating cancer stem cells (CSCs). CSCs are a subpopulation of cancer cells with the ability to self-renew, differentiate, and initiate tumour growth, contributing significantly to tumorigenesis, recurrence, and resistance to therapy. This review focuses on the intricate activity of the Shh pathway within the context of CSCs, detailing the molecular mechanisms through which Shh signalling influences CSC properties, including self-renewal, differentiation, and survival. It further explores the regulatory crosstalk between the Shh pathway and other signalling pathways in CSCs, highlighting the complexity of this regulatory network. Here, we delve into the upstream regulators and downstream effectors that modulate Shh pathway activity in CSCs. This review aims to cast a specific focus on the role of the Shh pathway in CSCs, provide a detailed exploration of molecular mechanisms and regulatory crosstalk, and discuss current and developing inhibitors. By summarising key findings and insights gained, we wish to emphasise the importance of further elucidating the interplay between the Shh pathway and CSCs to develop more effective cancer therapies.
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Xiao Z, Cui L, Yuan Y, He N, Xie X, Lin S, Yang X, Zhang X, Shi P, Wei Z, Li Y, Wang H, Wang X, Wei Y, Guo J, Yu L. 3D reconstruction of a gastrulating human embryo. Cell 2024; 187:2855-2874.e19. [PMID: 38657603 DOI: 10.1016/j.cell.2024.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 01/17/2024] [Accepted: 03/26/2024] [Indexed: 04/26/2024]
Abstract
Progress in understanding early human development has been impeded by the scarcity of reference datasets from natural embryos, particularly those with spatial information during crucial stages like gastrulation. We conducted high-resolution spatial transcriptomics profiling on 38,562 spots from 62 transverse sections of an intact Carnegie stage (CS) 8 human embryo. From this spatial transcriptomic dataset, we constructed a 3D model of the CS8 embryo, in which a range of cell subtypes are identified, based on gene expression patterns and positional register, along the anterior-posterior, medial-lateral, and dorsal-ventral axis in the embryo. We further characterized the lineage trajectories of embryonic and extra-embryonic tissues and associated regulons and the regionalization of signaling centers and signaling activities that underpin lineage progression and tissue patterning during gastrulation. Collectively, the findings of this study provide insights into gastrulation and post-gastrulation development of the human embryo.
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Affiliation(s)
- Zhenyu Xiao
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Science, Beijing Institute of Technology, Beijing 100081, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Lina Cui
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Yang Yuan
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Nannan He
- Department of Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Xinwei Xie
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Sirui Lin
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Xiaolong Yang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Xin Zhang
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Peifu Shi
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Zhifeng Wei
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Yang Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Hongmei Wang
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; School of Life Science, Beijing Institute of Technology, Beijing 100081, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Xiaoyan Wang
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China.
| | - Yulei Wei
- State Key Laboratory of Animal Biotech Breeding, College of Biological Sciences, China Agricultural University, Beijing 100193, China.
| | - Jingtao Guo
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China.
| | - Leqian Yu
- Key Laboratory of Organ Regeneration and Reconstruction, State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China.
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Huang J, Song C, Liu Y, Zhang T, Wang T, Liu X, Yu L. Epigenetic regulation by KDM5A mediates the effects of prenatal PM 2.5 exposure on hippocampal development and synaptic integrity through the Shh signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116311. [PMID: 38615639 DOI: 10.1016/j.ecoenv.2024.116311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/21/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
Prenatal environmental exposure could be an essential health risk factor associated with neurodevelopmental disorders in offspring. However, the exact mechanisms underlying the impact of prenatal PM2.5 exposure on offspring cognition remain unclear. In our recent study using a PM2.5 exposed pregnant mouse model, we observed significant synaptic dysfunction in the hippocampi of the offspring. Concurrently, the epigenetic regulator of KDM5A and the Shh signaling pathway exhibited decreased activities. Significantly, changes in hippocampal KDM5A and Shh levels directly correlated with PM2.5 exposure intensity. Subsequent experiments revealed a marked reduction in the expression of Shh signaling and related synaptic proteins when KDM5A was silenced in cells. Notably, the effects of KDM5A deficiency were reversed significantly with the supplementation of a Shh activator. Furthermore, our findings indicate that Shh activation significantly attenuates PM2.5-induced synaptic impairments in hippocampal neurons. We further demonstrated that EGR1, a transcriptional inhibitor, plays a direct role in KDM5A's regulation of the Shh pathway under conditions of PM2.5 exposure. Our results suggest that the KDM5A's inhibitory regulation on the Shh pathway through the EGR1 gene is a crucial epigenetic mechanism underlying the synaptic dysfunction in hippocampal neurons caused by maternal PM2.5 exposure. This emphasizes the role of epigenetic regulations in neurodevelopmental disorders caused by environmental factors.
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Affiliation(s)
- Jia Huang
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Chao Song
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Yongping Liu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Tianliang Zhang
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Tingting Wang
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Xinqi Liu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Li Yu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China.
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Walker MF, Zhang J, Steiner W, Ku PI, Zhu JF, Michaelson Z, Yen YC, Lee A, Long AB, Casey MJ, Poddar A, Nelson IB, Arveseth CD, Nagel F, Clough R, LaPotin S, Kwan KM, Schulz S, Stewart RA, Tesmer JJG, Caspary T, Subramanian R, Ge X, Myers BR. GRK2 Kinases in the Primary Cilium Initiate SMOOTHENED-PKA Signaling in the Hedgehog Cascade. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.05.10.540226. [PMID: 37214942 PMCID: PMC10197709 DOI: 10.1101/2023.05.10.540226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
During Hedgehog (Hh) signal transduction in development and disease, the atypical G protein-coupled receptor (GPCR) SMOOTHENED (SMO) communicates with GLI transcription factors by binding the protein kinase A catalytic subunit (PKA-C) and physically blocking its enzymatic activity. Here we show that GPCR kinase 2 (GRK2) orchestrates this process during endogenous Hh pathway activation in the vertebrate primary cilium. Upon SMO activation, GRK2 rapidly relocalizes from the ciliary base to the shaft, triggering SMO phosphorylation and PKA-C interaction. Reconstitution studies reveal that GRK2 phosphorylation enables active SMO to bind PKA-C directly. Lastly, the SMO-GRK2-PKA pathway underlies Hh signal transduction in a range of cellular and in vivo models. Thus, GRK2 phosphorylation of ciliary SMO, and the ensuing PKA-C binding and inactivation, are critical initiating events for the intracellular steps in Hh signaling. More broadly, our study suggests an expanded role for GRKs in enabling direct GPCR interactions with diverse intracellular effectors.
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Hamidpour SK, Amiri M, Ketabforoush AHME, Saeedi S, Angaji A, Tavakol S. Unraveling Dysregulated Cell Signaling Pathways, Genetic and Epigenetic Mysteries of Parkinson's Disease. Mol Neurobiol 2024:10.1007/s12035-024-04128-1. [PMID: 38573414 DOI: 10.1007/s12035-024-04128-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 03/19/2024] [Indexed: 04/05/2024]
Abstract
Parkinson's disease (PD) is a prevalent and burdensome neurodegenerative disorder that has been extensively researched to understand its complex etiology, diagnosis, and treatment. The interplay between genetic and environmental factors in PD makes its pathophysiology difficult to comprehend, emphasizing the need for further investigation into genetic and epigenetic markers involved in the disease. Early diagnosis is crucial for optimal management of the disease, and the development of novel diagnostic biomarkers is ongoing. Although many efforts have been made in the field of recognition and interpretation of the mechanisms involved in the pathophysiology of the disease, the current knowledge about PD is just the tip of the iceberg. By scrutinizing genetic and epigenetic patterns underlying PD, new avenues can be opened for dissecting the pathology of the disorder, leading to more precise and efficient diagnostic and therapeutic approaches. This review emphasizes the importance of studying dysregulated cell signaling pathways and molecular processes associated with genes and epigenetic alterations in understanding PD, paving the way for the development of novel therapeutic strategies to combat this devastating disease.
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Affiliation(s)
- Shayesteh Kokabi Hamidpour
- Department of Cell and Molecular Biology, Faculty of Biological Science, Kharazmi University, Tehran, Iran
| | - Mobina Amiri
- Department of Cell and Molecular Biology, Faculty of Biological Science, Kharazmi University, Tehran, Iran
| | | | - Saeedeh Saeedi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, NE, USA
| | - Abdolhamid Angaji
- Department of Cell and Molecular Biology, Faculty of Biological Science, Kharazmi University, Tehran, Iran
| | - Shima Tavakol
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, 1449614535, Iran.
- Department of Research and Development, Tavakol BioMimetic Technologies Company, Tehran, Iran.
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Parashar A, Jha D, Mehta V, Chauhan B, Ghosh P, Deb PK, Jaiswal M, Prajapati SK. Sonic hedgehog signalling pathway contributes in age-related disorders and Alzheimer's disease. Ageing Res Rev 2024; 96:102271. [PMID: 38492808 DOI: 10.1016/j.arr.2024.102271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/10/2024] [Accepted: 03/11/2024] [Indexed: 03/18/2024]
Abstract
Alzheimer's disease (AD) is caused by the aging process and manifested by cognitive deficits and progressive memory loss. During aging, several conditions, including hypertension, diabetes, and cholesterol, have been identified as potential causes of AD by affecting Sonic hedgehog (Shh) signalling. In addition to being essential for cell differentiation and proliferation, Shh signalling is involved in tissue repair and the prevention of neurodegeneration. Neurogenesis is dependent on Shh signalling; inhibition of this pathway results in neurodegeneration. Several protein-protein interactions that are involved in Shh signalling are implicated in the pathophysiology of AD like overexpression of the protein nexin-1 inhibits the Shh pathway in AD. A protein called Growth Arrest Specific-1 works with another protein called cysteine dioxygenase (CDO) to boost Shh signalling. CDO is involved in the development of the central nervous system (CNS). Shh signalling strengthened the blood brain barrier and therefore prevent the entry of amyloid beta and other toxins to the brain from periphery. Further, several traditional remedies used for AD and dementia, including Epigallocatechin gallate, yokukansan, Lycium barbarum polysaccharides, salvianolic acid, and baicalin, are known to stimulate the Shh pathway. In this review, we elaborated that the Shh signalling exerts a substantial influence on the pathogenesis of AD. In this article, we have tried to explore the various possible connections between the Shh signalling and various known pathologies of AD.
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Affiliation(s)
- Arun Parashar
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan 173 212, India.
| | - Dhruv Jha
- Birla Institute of Technology, India
| | - Vineet Mehta
- Department of Pharmacology, Government College of Pharmacy, Rohru, District Shimla, Himachal Pradesh 171207, India
| | - Bonney Chauhan
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan 173 212, India
| | - Pappu Ghosh
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan 173 212, India
| | - Prashanta Kumar Deb
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology & Management Sciences, Solan 173 212, India
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Zou Y, Wu S, Hu Q, Zhou H, Ge Y, Ju Z, Luo S. Sonic hedgehog restrains the ubiquitin-dependent degradation of SP1 to inhibit neuronal/glial senescence associated phenotypes in chemotherapy-induced peripheral neuropathy via the TRIM25-CXCL13 axis. J Adv Res 2024:S2090-1232(24)00106-1. [PMID: 38479571 DOI: 10.1016/j.jare.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 02/22/2024] [Accepted: 03/10/2024] [Indexed: 03/19/2024] Open
Abstract
INTRODUCTION Chemotherapy-induced peripheral neuropathy (CIPN) is a common complication that affects an increasing number of cancer survivors. However, the current treatment options for CIPN are limited. Paclitaxel (PTX) is a widely used chemotherapeutic drug that induces senescence in cancer cells. While previous studies have demonstrated that Sonic hedgehog (Shh) can counteract cellular dysfunction during aging, its role in CIPN remains unknown. OBJECTIVES Herein, the aim of this study was to investigate whether Shh activation could inhibits neuronal/glial senescence and alleviates CIPN. METHODS We treated ND7/23 neuronal cells and RSC96 Schwann cells with two selective Shh activators (purmorphamine [PUR] and smoothened agonist [SAG]) in the presence of PTX. Additionally, we utilized a CIPN mouse model induced by PTX injection. To assess cellular senescence, we performed a senescence-associated β-galactosidase (SA-β-gal) assay, measured reactive oxygen species (ROS) levels, and examined the expression of P16, P21, and γH2AX. To understand the underlying mechanisms, we conducted ubiquitin assays, LC-MS/MS, H&E staining, and assessed protein expression through Western blotting and immunofluorescence staining. RESULTS In vitro, we observed that Shh activation significantly alleviated the senescence-related decline in multiple functions included SA-β-gal activity, expression of P16 and P21, cell viability, and ROS accumulation in DRG sensory neurons and Schwann cells after PTX exposure. Furthermore, our in vivo experiments demonstrated that Shh activation significantly reduced axonal degeneration, demyelination, and improved nerve conduction. Mechanistically, we discovered that PTX reduced the protein level of SP1, which was ubiquitinated by the E3 ligase TRIM25 at the lysine 694 (K694), leading to increased CXCL13 expression, and we found that Shh activation inhibited PTX-induced neuronal/glial senescence and CIPN through the TRIM25-SP1-CXCL13 axis. CONCLUSION These findings provide evidence for the role of PTX-induced senescence in DRG sensory neurons and Schwann cells, suggesting that Shh could be a potential therapeutic target for CIPN.
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Affiliation(s)
- Ying Zou
- Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Postdoctoral Research Station of Biology, School of Medicine, Jinan University, Guangzhou, China; Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Shu Wu
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Qian Hu
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Haoxian Zhou
- Department of Cardiology, Guangdong Provincial Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yuanlong Ge
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China.
| | - Zhenyu Ju
- Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Postdoctoral Research Station of Biology, School of Medicine, Jinan University, Guangzhou, China; Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China.
| | - Shengkang Luo
- Department of Plastic and Reconstructive Surgery, Guangdong Second Provincial General Hospital, Postdoctoral Research Station of Biology, School of Medicine, Jinan University, Guangzhou, China; Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Aging and Regenerative Medicine, College of Life Science and Technology, Jinan University, Guangzhou, China.
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Heo C, Kwak HJ, Ngo LH, Woo RS, Lee SJ. Implementation of the neuro-glia-vascular unit through co-culture of adult neural stem cells and vascular cells and transcriptomic analysis of diverse Aβ assembly types. J Neurosci Methods 2024; 402:110029. [PMID: 38042304 DOI: 10.1016/j.jneumeth.2023.110029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/05/2023] [Accepted: 11/28/2023] [Indexed: 12/04/2023]
Abstract
BACKGROUND The blood-brain barrier (BBB) is a specialized layer between blood vessels and tissue in the brain, which is comprised of a neuro-glia-vascular (NGV) unit, thus play a vital role in various brain diseases. NEW METHOD We developed the in vitro NGV units by co-culturing brain microvascular endothelial cells (BMECs; bEnd.3) and primary neural stem cells extracted from subventricular zone of adult mice. This approach was designed to mimic the RNA profile conditions found in the microvessels of a mouse brain and confirmed through various comparative transcriptome analyses. RESULTS Optimal NGV unit development was achieved by adjusting cell density-dependent co-culture ratios. Specifically, the morphogenic development and neuronal association of astrocyte endfeet were well observed in the contact region with BMECs in the NGV unit. Through transcriptome analysis, we compared co-cultured bEnd.3/NSCs with monocultured bEnd.3 or NSCs and additionally compared them with previously reported mouse brain vascular tissue to show that this NGV unit model is a suitable in vitro model for neurological disease such as Alzheimer's disease (AD). COMPARISON WITH EXISTING METHOD(S) This in vitro NGV unit was formed from neural stem cells and vascular cells in the brain of adult mice, not embryos. It is very useful for studying brain disease mechanisms by identifying proteins and genes associated with diseases progress. CONCLUSIONS We suggest that this simple in vitro NGV model is appropriate to investigate the relationship between BBB changes and pathological factors in the fields of neurovascular biology and cerebrovascular diseases including AD.
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Affiliation(s)
- Chaejeong Heo
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, South Korea; Institute for Quantum Biophysics (IQB), Department of Biophysics, Sungkyunkwan University, Suwon 16419, South Korea
| | - Hee-Jin Kwak
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon 16419, South Korea
| | - Long Hoang Ngo
- Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, South Korea
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, College of Medicine, Eulji University, Daejeon 34824, South Korea.
| | - Sook-Jeong Lee
- Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, South Korea.
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Dirks ML, McDougal OM. Pharmacology of Veratrum californicum Alkaloids as Hedgehog Pathway Antagonists. Pharmaceuticals (Basel) 2024; 17:123. [PMID: 38256956 PMCID: PMC10821092 DOI: 10.3390/ph17010123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/10/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Veratrum californicum contains steroidal alkaloids that function as inhibitors of hedgehog (Hh) signaling, a pathway involved in the growth and differentiation of cells and normal tissue development. This same Hh pathway is abnormally active for cell proliferation in more than 20 types of cancer. In this current study, alkaloids have been extracted from the root and rhizome of V. californicum, followed by their separation into five fractions using high performance liquid chromatography. Mass spectrometry was used to identify the presence of twenty-five alkaloids, nine more than are commonly cited in literature reports, and the Bruker Compass Data Analysis software was used to predict the molecular formula for every detected alkaloid. The Gli activity of the raw extract and each fraction were compared to 0.1 µM cyclopamine, and fractions 1, 2, and 4 showed increased bioactivity through suppression of the Hh signaling pathway. Fractions 2 and 4 had enhanced bioactivity, but fraction 1 was most effective in inhibiting Hh signaling. The composition of fraction 1 consisted of veratrosine, cycloposine, and potential isomers of each.
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Affiliation(s)
- Madison L. Dirks
- Biomolecular Sciences Graduate Programs, Boise State University, Boise, ID 83725, USA;
| | - Owen M. McDougal
- Department of Chemistry and Biochemistry, Boise State University, Boise, ID 83725, USA
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Goida J, Pilmane M. The presence and distribution of various genes in postnatal CLP-affected palatine tissue. Maxillofac Plast Reconstr Surg 2024; 46:1. [PMID: 38227085 DOI: 10.1186/s40902-024-00412-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 01/08/2024] [Indexed: 01/17/2024] Open
Abstract
BACKGROUND Worldwide cleft lip with or without a cleft palate (CL/P) is the most common craniofacial birth defect. Apart from changes in facial appearance, additionally affected individuals often suffer from various associated comorbidities requiring complex multidisciplinary treatment with overall high expenses. Understanding the complete pathogenetic mechanisms of CL/P might aid in developing new preventative strategies and therapeutic approaches, help with genetic counselling, and improve quality of life. Many genes have been associated with the development of orofacial clefts; however, the majority require further research. Based on the role of PAX7, PAX9, SHH, SOX3, WNT3A, and WNT9B in orofacial development, the intention was to use chromogenic in situ hybridization to detect the six genes in postnatal CLP-affected palatine tissue and compare their distribution within the tissue samples. RESULTS Statistically significant differences in the distribution of PAX7, PAX9, WNT3A, and WNT9B were observed. In total, 19 pairs of moderate to very strong positive correlations were noted. CONCLUSIONS Changes in the cleft-affected palatine epithelium primarily seem to be associated with the PAX7 gene; however, PAX9, WNT3A, WNT9B, and SOX3 role seems to be more limited. Whilst connective tissue changes seem to depend on PAX7 only, SHH seems to participate individually and indistinctly. Numerous positive correlations reflect the complicating interactions of the pathways and their components in the orofacial cleft morphopathogenesis.
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Affiliation(s)
- Jana Goida
- Institute of Anatomy and Anthropology, Riga Stradins University, Riga, LV-1010, Latvia.
| | - Mara Pilmane
- Institute of Anatomy and Anthropology, Riga Stradins University, Riga, LV-1010, Latvia
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12
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Sokolov D, Sharda N, Banerjee A, Denisenko K, Basalious EB, Shukla H, Waddell J, Hamdy NM, Banerjee A. Differential Signaling Pathways in Medulloblastoma: Nano-biomedicine Targeting Non-coding Epigenetics to Improve Current and Future Therapeutics. Curr Pharm Des 2024; 30:31-47. [PMID: 38151840 DOI: 10.2174/0113816128277350231219062154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/15/2023] [Indexed: 12/29/2023]
Abstract
BACKGROUND Medulloblastomas (MDB) are malignant, aggressive brain tumors that primarily affect children. The survival rate for children under 14 is approximately 72%, while for ages 15 to 39, it is around 78%. A growing body of evidence suggests that dysregulation of signaling mechanisms and noncoding RNA epigenetics play a pivotal role in this disease. METHODOLOGY This study conducted an electronic search of articles on websites like PubMed and Google. The current review also used an in silico databases search and bioinformatics analysis and an extensive comprehensive literature search for original research articles and review articles as well as retrieval of current and future medications in clinical trials. RESULTS This study indicates that several signaling pathways, such as sonic hedgehog, WNT/β-catenin, unfolded protein response mediated ER stress, notch, neurotrophins and TGF-β and ERK, MAPK, and ERK play a crucial role in the pathogenesis of MDB. Gene and ncRNA/protein are also involved as an axis long ncRNA to sponge micro-RNAs that affect downstream signal proteins expression and translation affection disease pathophysiology, prognosis and present potential target hit for drug repurposing. Current treatment options include surgery, radiation, and chemotherapy; unfortunately, the disease often relapses, and the survival rate is less than 5%. Therefore, there is a need to develop more effective treatments to combat recurrence and improve survival rates. CONCLUSION This review describes various MDB disease hallmarks, including the signaling mechanisms involved in pathophysiology, related-causal genes, epigenetics, downstream genes/epigenes, and possibly the causal disease genes/non-protein coding (nc)RNA/protein axis. Additionally, the challenges associated with MDB treatment are discussed, along with how they are being addressed using nano-technology and nano-biomedicine, with a listing of possible treatment options and future potential treatment modalities.
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Affiliation(s)
- Daniil Sokolov
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, MD 21201, USA
| | - Neha Sharda
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, MD 21201, USA
| | - Aindrila Banerjee
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kseniia Denisenko
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, MD 21201, USA
| | - Emad B Basalious
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Al Kasr Al Aini 11562, Cairo, Egypt
| | - Hem Shukla
- Division of Translational Radiation Sciences, Department of Radiation Oncology, University of Maryland, School of Medicine, Baltimore, MD 21201, USA
| | - Jaylyn Waddell
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, MD 21201, USA
| | - Nadia M Hamdy
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Abassia 11566, Cairo, Egypt
| | - Aditi Banerjee
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, Maryland, MD 21201, USA
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13
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Estudillo E, López-Ornelas A, Rodríguez-Oviedo A, Gutiérrez de la Cruz N, Vargas-Hernández MA, Jiménez A. Thinking outside the black box: are the brain endothelial cells the new main target in Alzheimer's disease? Neural Regen Res 2023; 18:2592-2598. [PMID: 37449594 DOI: 10.4103/1673-5374.373672] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023] Open
Abstract
The blood-brain barrier is the interface through which the brain interacts with the milieu and consists mainly of a sophisticated network of brain endothelial cells that forms blood vessels and selectively moves molecules inside and outside the brain through multiple mechanisms of transport. Although brain endothelial cell function is crucial for brain homeostasis, their role in neurodegenerative diseases has historically not been considered with the same importance as other brain cells such as microglia, astroglia, neurons, or even molecules such as amyloid beta, Tau, or alpha-synuclein. Alzheimer's disease is the most common neurodegenerative disease, and brain endothelial cell dysfunction has been reported by several groups. However, its impairment has barely been considered as a potential therapeutic target. Here we review the most recent advances in the relationship between Alzheimer's disease and brain endothelial cells commitment and analyze the possible mechanisms through which their alterations contribute to this neurodegenerative disease, highlighting their inflammatory phenotype and the possibility of an impaired secretory pattern of brain endothelial cells that could contribute to the progression of this ailment. Finally, we discuss why shall brain endothelial cells be appreciated as a therapeutic target instead of solely an obstacle for delivering treatments to the injured brain in Alzheimer's disease.
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Affiliation(s)
- Enrique Estudillo
- Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía Manuel Velasco Suárez, Mexico City, Mexico
| | - Adolfo López-Ornelas
- División de Investigación, Hospital Juárez de México; Hospital Nacional Homeopático, Hospitales Federales de Referencia, Mexico City, Mexico
| | | | - Neptali Gutiérrez de la Cruz
- Laboratorio de Morfología; Escuela Militar de Graduados de Sanidad, Secretaría de la Defensa Nacional, Batalla de Celaya, Lomas de Sotelo, Miguel Hidalgo, Mexico City, Mexico
| | - Marco Antonio Vargas-Hernández
- Escuela Militar de Graduados de Sanidad, Secretaría de la Defensa Nacional, Batalla de Celaya, Lomas de Sotelo, Miguel Hidalgo, Mexico City, Mexico
| | - Adriana Jiménez
- División de Investigación, Hospital Juárez de México, Mexico City, Mexico
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14
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Schmidt S, Stautner C, Vu DT, Heinz A, Regensburger M, Karayel O, Trümbach D, Artati A, Kaltenhäuser S, Nassef MZ, Hembach S, Steinert L, Winner B, Jürgen W, Jastroch M, Luecken MD, Theis FJ, Westmeyer GG, Adamski J, Mann M, Hiller K, Giesert F, Vogt Weisenhorn DM, Wurst W. A reversible state of hypometabolism in a human cellular model of sporadic Parkinson's disease. Nat Commun 2023; 14:7674. [PMID: 37996418 PMCID: PMC10667251 DOI: 10.1038/s41467-023-42862-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 10/23/2023] [Indexed: 11/25/2023] Open
Abstract
Sporadic Parkinson's Disease (sPD) is a progressive neurodegenerative disorder caused by multiple genetic and environmental factors. Mitochondrial dysfunction is one contributing factor, but its role at different stages of disease progression is not fully understood. Here, we showed that neural precursor cells and dopaminergic neurons derived from induced pluripotent stem cells (hiPSCs) from sPD patients exhibited a hypometabolism. Further analysis based on transcriptomics, proteomics, and metabolomics identified the citric acid cycle, specifically the α-ketoglutarate dehydrogenase complex (OGDHC), as bottleneck in sPD metabolism. A follow-up study of the patients approximately 10 years after initial biopsy demonstrated a correlation between OGDHC activity in our cellular model and the disease progression. In addition, the alterations in cellular metabolism observed in our cellular model were restored by interfering with the enhanced SHH signal transduction in sPD. Thus, inhibiting overactive SHH signaling may have potential as neuroprotective therapy during early stages of sPD.
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Affiliation(s)
- Sebastian Schmidt
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany.
- Munich Institute of Biomedical Engineering, Department of Chemistry, Technical University of Munich, Munich, Germany.
| | - Constantin Stautner
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Duc Tung Vu
- Department for Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Alexander Heinz
- Department of Bioinformatics and Biochemistry and Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Martin Regensburger
- Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ozge Karayel
- Department for Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
| | - Dietrich Trümbach
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
- Institute of Metabolism and Cell Death, Helmholtz Zentrum München, Neuherberg, Germany
| | - Anna Artati
- Research Unit Molecular Endocrinology and Metabolism, Helmholtz Zentrum München, Neuherberg, Germany
| | - Sabine Kaltenhäuser
- Department of Bioinformatics and Biochemistry and Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Mohamed Zakaria Nassef
- Department of Bioinformatics and Biochemistry and Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Sina Hembach
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Letyfee Steinert
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Beate Winner
- Department of Stem Cell Biology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Winkler Jürgen
- Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Martin Jastroch
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Malte D Luecken
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Fabian J Theis
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
- Department of Mathematics, Technische Universität München, Garching bei München, Germany
| | - Gil Gregor Westmeyer
- Munich Institute of Biomedical Engineering, Department of Chemistry, Technical University of Munich, Munich, Germany
- Institute for Synthetic Biomedicine, Helmholtz Zentrum München, Neuherberg, Germany
| | - Jerzy Adamski
- Institute of Experimental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Matthias Mann
- Department for Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, Martinsried, Germany
- NNF Center for Protein Research, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Karsten Hiller
- Department of Bioinformatics and Biochemistry and Braunschweig Integrated Center of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Florian Giesert
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | | | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany.
- Chair of Developmental Genetics, Munich School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany.
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany.
- German Center for Neurodegenerative Diseases (DZNE) site Munich, Munich, Germany.
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15
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Wang B, Zhao Y, Qu Y, Lu J, Yan H, Gu J, Jiang Q, Xu Y, Xia W. Neuroprotective effect of chitosan oligosaccharide on alcohol-induced hippocampal injury using proteomic analysis. J Food Sci 2023; 88:4718-4730. [PMID: 37799098 DOI: 10.1111/1750-3841.16778] [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: 11/22/2022] [Revised: 08/28/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023]
Abstract
Alcoholism is a serious public health problem, and the abuse of drinking seriously damages the health of people. Chitosan oligosaccharides (COSs) are small-molecule oligosaccharides with amino groups that have many unique properties. The neuroprotective effect of COS on alcohol-induced hippocampal injury in Sprague-Dawley (SD) rats was investigated. The discrimination ratio of the COS group in the Y-maze experiment was 59.3% higher than that of the ETOH group. Meanwhile, the discrimination index was less than 0 in the ETOH group but greater than 0 in the COS group during the object recognition test. The cells in the COS group were more tightly arranged than those in the ETOH group. Proteomics was used to identify differentially expressed proteins in the hippocampus. There were 27 differentially expressed proteins in the COS and ETOH group for further bioinformatic analysis. There are three enriched pathway categories, namely, primary immunodeficiency, hedgehog signaling, and sulfur relay system. Next, sonic hedgehog signaling pathway-related proteins were verified through western blotting. The protein expression level of β-arrestin-2 in the COS group was 2.85 times higher than that in the ETOH group. This work may contribute to understanding the underlying mechanism of the neuroprotective effect of COS against alcohol-induced hippocampal injury in SD rats.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Yuke Zhao
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Yufei Qu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
| | - Jingyu Lu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
| | - Hua Yan
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Juan Gu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Qiqing Jiang
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Yanshun Xu
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
| | - Wenshui Xia
- State Key Laboratory of Food Science and Resources, School of Food Science and Technology, Jiangnan University, Jiangsu, Wuxi, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu, China
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16
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Obafemi BA, Adedara IA, Rocha JBT. Neurotoxicity of ochratoxin A: Molecular mechanisms and neurotherapeutic strategies. Toxicology 2023; 497-498:153630. [PMID: 37709162 DOI: 10.1016/j.tox.2023.153630] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/28/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
Data from epidemiological and experimental studies have evidenced that some chemical contaminants in food elicit their harmful effects by targeting the central nervous system. Ochratoxin A is a foodborne mycotoxin produced by Aspergillus and Penicillium species. Research on neurotoxicity associated with ochratoxin A exposure has increased greatly in recent years. The present review accrued substantial evidence on the neurotoxicity associated with ochratoxin A exposure as well as discussed notable susceptible targets of noxious ochratoxin A at molecular, cellular and genetic levels. Specifically, the neurotoxic mechanisms associated with ochratoxin A exposure were unequivocally unraveled in vitro using human neuroblastoma SH-SY5Y cells, mouse hippocampal HT22 cells, human astrocyte (NHA-SV40LT) cells and microglia cells as well as in vivo using mammalian and non-mammalian models. Data from human biomonitoring studies on plasma ochratoxin A levels in patients with neurodegenerative diseases with some age- and sex-related responses were also highlighted. Moreover, the neurotherapeutic mechanisms of some naturally occurring bioactive compounds against ochratoxin A neurotoxicity are reviewed. Collectively, accumulated data from literature demonstrate that ochratoxin A is a neurotoxin with potential pathological involvement in neurological disorders. Cutting edge original translational research on the development of neurotherapeutics for neurotoxicity associated with foodborne toxicants including ochratoxin A is indispensable.
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Affiliation(s)
- Blessing A Obafemi
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil; Department of Medical Biochemistry, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, Nigeria
| | - Isaac A Adedara
- Department of Food Science and Technology, Center of Rural Sciences, Federal University of Santa Maria, Camobi, 97105- 900 Santa Maria, RS, Brazil.
| | - Joao B T Rocha
- Department of Biochemistry and Molecular Biology, Federal University of Santa Maria, 97105-900 Santa Maria, RS, Brazil
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17
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Wang G, Tang X, Zhao F, Qin X, Wang F, Yang D, Zhu H, Chen X. Total saponins from Trillium tschonoskii Maxim promote neurological recovery in model rats with post-stroke cognitive impairment. Front Pharmacol 2023; 14:1255560. [PMID: 37745057 PMCID: PMC10513410 DOI: 10.3389/fphar.2023.1255560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Total saponins from Trillium tschonoskii Maxim (TSTT), a bioactive component of local natural herbs in the Enshi area, China, have been demonstrated to have functions of restoring cognitive capacity and promoting axonal regeneration post-stroke, but the mechanism of this process remains unclear. The hippocampus is a critical tissue for controlling learning and memory capacity, and the sonic hedgehog (Shh) signaling pathway plays a major role in the patterning and synaptic plasticity of hippocampal neural circuits. Therefore, we aimed to investigate whether TSTT could restore learning and cognitive functions by modulating the Shh pathway in rats with post-stroke cognitive impairment (PSCI). The ischemia model was established by permanent middle cerebral artery occlusion (MCAO) in 100 Sprague-Dawley (SD) rats, and the model rats were administered using TSTT (100 mg/kg) or donepezil hydrochloride as the positive control (daily 0.45 mg/kg, DON) for 4 weeks after the operation. As assessed by the Morris water maze test, the cognitive function of PSCI rats was significantly improved upon TSTT treatment. Meanwhile, the cerebral infarct volume reduced with TSTT, as shown by HE and TTC staining, and the number of Nissl bodies and dendritic spine density were significantly increased, as shown by Nissl and Golgi staining. In addition, TSTT upregulated PSD-95, SYN, and GAP-43, and inhibited neuronal apoptosis, as evidenced by increased Bcl-2 levels along with decreased Bax and caspase-3 expression. TSTT could also significantly upregulate Shh, Ptch1, Smo, and Gli1 proteins, indicating the activation of the Shh signaling pathway. Therefore, TSTT can protect PSCI rats by inhibiting apoptosis and promoting neuronal synaptic remodeling. The Shh pathway is also involved.
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Affiliation(s)
- Gang Wang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Xiane Tang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Fangyu Zhao
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Xiaoli Qin
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Fengjie Wang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Dan Yang
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Hong Zhu
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Xianbing Chen
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
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18
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Soleymani T, Chen TY, Gonzalez-Kozlova E, Dogra N. The human neurosecretome: extracellular vesicles and particles (EVPs) of the brain for intercellular communication, therapy, and liquid-biopsy applications. Front Mol Biosci 2023; 10:1156821. [PMID: 37266331 PMCID: PMC10229797 DOI: 10.3389/fmolb.2023.1156821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/25/2023] [Indexed: 06/03/2023] Open
Abstract
Emerging evidence suggests that brain derived extracellular vesicles (EVs) and particles (EPs) can cross blood-brain barrier and mediate communication among neurons, astrocytes, microglial, and other cells of the central nervous system (CNS). Yet, a complete understanding of the molecular landscape and function of circulating EVs & EPs (EVPs) remain a major gap in knowledge. This is mainly due to the lack of technologies to isolate and separate all EVPs of heterogeneous dimensions and low buoyant density. In this review, we aim to provide a comprehensive understanding of the neurosecretome, including the extracellular vesicles that carry the molecular signature of the brain in both its microenvironment and the systemic circulation. We discuss the biogenesis of EVPs, their function, cell-to-cell communication, past and emerging isolation technologies, therapeutics, and liquid-biopsy applications. It is important to highlight that the landscape of EVPs is in a constant state of evolution; hence, we not only discuss the past literature and current landscape of the EVPs, but we also speculate as to how novel EVPs may contribute to the etiology of addiction, depression, psychiatric, neurodegenerative diseases, and aid in the real time monitoring of the "living brain". Overall, the neurosecretome is a concept we introduce here to embody the compendium of circulating particles of the brain for their function and disease pathogenesis. Finally, for the purpose of inclusion of all extracellular particles, we have used the term EVPs as defined by the International Society of Extracellular Vesicles (ISEV).
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Affiliation(s)
- Taliah Soleymani
- Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Tzu-Yi Chen
- Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Edgar Gonzalez-Kozlova
- Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Navneet Dogra
- Pathology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Genetics and Genomics, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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19
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Niedowicz DM, Wang WX, Price DA, Xie K, Patel E, Nelson PT. Impact of thyroid hormone perturbations in adult mice: brain weight and blood vessel changes, gene expression variation, and neurobehavioral outcomes. Neurobiol Aging 2023; 128:74-84. [PMID: 37229849 DOI: 10.1016/j.neurobiolaging.2023.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/24/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
Mouse models of hyper- and hypothyroidism were used to examine the effects of thyroid hormone (TH) dyshomeostasis on the aging mammalian brain. 13-14 month-old mice were treated for 4months with either levothyroxine (hyperthyroid) or a propylthiouracil and methimazole combination (PTU/Met; hypothyroid). Hyperthyroid mice performed better on Morris Water Maze than control mice, while hypothyroid mice performed worse. Brain weight was increased in thyroxine-treated, and decreased in PTU/Met-treated animals. The brain weight change was strongly correlated with circulating and tissue T4. Quantitative measurements of microvessels were compared using digital neuropathologic methods. There was an increase in microvessel area in hyperthyroid mice. Hypothyroid mice showed a trend for elevated glial fibrillary acidic protein-immunoreactive astrocytes, indicating an increase in neuroinflammation. Gene expression alterations were associated with TH perturbation and astrocyte-expressed transcripts were particularly affected. For example, expression of Gli2 and Gli3, mediators in the Sonic Hedgehog signaling pathway, were strongly impacted by both treatments. We conclude that TH perturbations produce robust neurobehavioral, pathological, and brain gene expression changes in aging mouse models.
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Affiliation(s)
- Dana M Niedowicz
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA.
| | - Wang-Xia Wang
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA; Department of Pathology, Division of Neuropathology, University of Kentucky, Lexington, KY, USA
| | - Douglas A Price
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA
| | - Kevin Xie
- Department of Biostatistics, University of Kentucky, Lexington, KY, USA
| | - Ela Patel
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA
| | - Peter T Nelson
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA; Department of Pathology, Division of Neuropathology, University of Kentucky, Lexington, KY, USA
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Prajapati A, Mehan S, Khan Z. The role of Smo-Shh/Gli signaling activation in the prevention of neurological and ageing disorders. Biogerontology 2023:10.1007/s10522-023-10034-1. [PMID: 37097427 DOI: 10.1007/s10522-023-10034-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/05/2023] [Indexed: 04/26/2023]
Abstract
Sonic hedgehog (Shh) signaling is an essential central nervous system (CNS) pathway involved during embryonic development and later life stages. Further, it regulates cell division, cellular differentiation, and neuronal integrity. During CNS development, Smo-Shh signaling is significant in the proliferation of neuronal cells such as oligodendrocytes and glial cells. The initiation of the downstream signalling cascade through the 7-transmembrane protein Smoothened (Smo) promotes neuroprotection and restoration during neurological disorders. The dysregulation of Smo-Shh is linked to the proteolytic cleavage of GLI (glioma-associated homolog) into GLI3 (repressor), which suppresses target gene expression, leading to the disruption of cell growth processes. Smo-Shh aberrant signalling is responsible for several neurological complications contributing to physiological alterations like increased oxidative stress, neuronal excitotoxicity, neuroinflammation, and apoptosis. Moreover, activating Shh receptors in the brain promotes axonal elongation and increases neurotransmitters released from presynaptic terminals, thereby exerting neurogenesis, anti-oxidation, anti-inflammatory, and autophagy responses. Smo-Shh activators have been shown in preclinical and clinical studies to help prevent various neurodegenerative and neuropsychiatric disorders. Redox signalling has been found to play a critical role in regulating the activity of the Smo-Shh pathway and influencing downstream signalling events. In the current study ROS, a signalling molecule, was also essential in modulating the SMO-SHH gli signaling pathway in neurodegeneration. As a result of this investigation, dysregulation of the pathway contributes to the pathogenesis of various neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD).Thus, Smo-Shh signalling activators could be a potential therapeutic intervention to treat neurocomplications of brain disorders.
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Affiliation(s)
- Aradhana Prajapati
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.
| | - Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
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21
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Zaky DA, Sayed RH, Mohamed YS. Liraglutide limits the immunogenic cell death-mediated ROS propagation and PI3K/AKT inactivation after doxorubicin-induced gonadotoxicity in rats: Involvement of the canonical Hedgehog trajectory. Int Immunopharmacol 2023; 119:110212. [PMID: 37094542 DOI: 10.1016/j.intimp.2023.110212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 04/11/2023] [Accepted: 04/16/2023] [Indexed: 04/26/2023]
Abstract
Chemotherapy-accompanied reproductive dysfunction has lately begun to draw the attention of the scientific community owing to the irreversible impact on the patient's quality of life. Here we tended to investigate the potential role of liraglutide (LRG) in modulating the canonical Hedgehog (Hh) signaling in doxorubicin (DXR)-induced gonadotoxicity in rats. Female virgin Wistar rats were divided into 4 groups; control, DXR-treated (25 mg/kg, single i.p. injection), LRG-treated (150 μg/Kg/day, s.c) and itraconazole (ITC; 150 mg/kg/day, p.o)-pretreated group, as the Hh pathway inhibitor. Treatment with LRG potentiated the PI3K/AKT/p-GSK3β cascade and relieved the oxidative burden-induced by the DXR-driven immunogenic cell death (ICD). LRG also upregulated the expression of the Desert hedgehog ligand (DHh) and the patched-1 (PTCH1) receptor and augmented the protein level of Indian hedgehog (IHh) ligand, Gli1 and cyclin-D1 (CD1). Besides, hypertranscription of IHh, DHh, Ptch1, Smo, Gli1/2 and CD1 genes along with a transcriptional recession of Gli3 gene were reported in LRG-treated group. ITC pre-administration partially abrogated this positive effect of LRG, proving the implication of the examined pathway. Microscopically, LRG ameliorated the follicular atresia noticed in the DXR group; effect that was, at least partially, declined by ITC pre-treatment. These findings end to a conclusion that LRG treatment might hinder the DXR-associated reproductive toxicity, resultant from ROS generated by the cells undergoing ICD, and trigger follicular growth and repair by the PI3K/AKT- dependent switching-on of the canonical Hh pathway.
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Affiliation(s)
- Doaa A Zaky
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rabab H Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Yasmin S Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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22
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Waseem A, Rashid S, Rashid K, Khan MA, Khan R, Haque R, Seth P, Raza SS. Insight into the transcription factors regulating Ischemic Stroke and Glioma in Response to Shared Stimuli. Semin Cancer Biol 2023; 92:102-127. [PMID: 37054904 DOI: 10.1016/j.semcancer.2023.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/28/2023] [Accepted: 04/09/2023] [Indexed: 04/15/2023]
Abstract
Cerebral ischemic stroke and glioma are the two leading causes of patient mortality globally. Despite physiological variations, 1 in 10 people who have an ischemic stroke go on to develop brain cancer, most notably gliomas. In addition, glioma treatments have also been shown to increase the risk of ischemic strokes. Stroke occurs more frequently in cancer patients than in the general population, according to traditional literature. Unbelievably, these events share multiple pathways, but the precise mechanism underlying their co-occurrence remains unknown. Transcription factors (TFs), the main components of gene expression programmes, finally determine the fate of cells and homeostasis. Both ischemic stroke and glioma exhibit aberrant expression of a large number of TFs, which are strongly linked to the pathophysiology and progression of both diseases. The precise genomic binding locations of TFs and how TF binding ultimately relates to transcriptional regulation remain elusive despite a strong interest in understanding how TFs regulate gene expression in both stroke and glioma. As a result, the importance of continuing efforts to understand TF-mediated gene regulation is highlighted in this review, along with some of the primary shared events in stroke and glioma.
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Affiliation(s)
- Arshi Waseem
- Laboratory for Stem Cell & Restorative Neurology, Department of Biotechnology, Era's Lucknow Medical College and Hospital, Era University, Sarfarazganj, Lucknow-226003, India
| | - Sumaiya Rashid
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia
| | - Khalid Rashid
- Department of Cancer Biology, Vontz Center for Molecular Studies, Cincinnati, OH 45267-0521
| | | | - Rehan Khan
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City,Mohali, Punjab 140306, India
| | - Rizwanul Haque
- Department of Biotechnology, Central University of South Bihar, Gaya -824236, India
| | - Pankaj Seth
- Molecular and Cellular Neuroscience, Neurovirology Section, National Brain Research Centre, Manesar, Haryana-122052, India
| | - Syed Shadab Raza
- Laboratory for Stem Cell & Restorative Neurology, Department of Biotechnology, Era's Lucknow Medical College and Hospital, Era University, Sarfarazganj, Lucknow-226003, India; Department of Stem Cell Biology and Regenerative Medicine, Era's Lucknow Medical College Hospital, Era University, Sarfarazganj, Lucknow-226003, India
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23
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Choi S, Cho N, Kim KK. The implications of alternative pre-mRNA splicing in cell signal transduction. Exp Mol Med 2023; 55:755-766. [PMID: 37009804 PMCID: PMC10167241 DOI: 10.1038/s12276-023-00981-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 01/05/2023] [Accepted: 01/27/2023] [Indexed: 04/04/2023] Open
Abstract
Cells produce multiple mRNAs through alternative splicing, which ensures proteome diversity. Because most human genes undergo alternative splicing, key components of signal transduction pathways are no exception. Cells regulate various signal transduction pathways, including those associated with cell proliferation, development, differentiation, migration, and apoptosis. Since proteins produced through alternative splicing can exhibit diverse biological functions, splicing regulatory mechanisms affect all signal transduction pathways. Studies have demonstrated that proteins generated by the selective combination of exons encoding important domains can enhance or attenuate signal transduction and can stably and precisely regulate various signal transduction pathways. However, aberrant splicing regulation via genetic mutation or abnormal expression of splicing factors negatively affects signal transduction pathways and is associated with the onset and progression of various diseases, including cancer. In this review, we describe the effects of alternative splicing regulation on major signal transduction pathways and highlight the significance of alternative splicing.
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Affiliation(s)
- Sunkyung Choi
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Namjoon Cho
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Kee K Kim
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea.
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24
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Zheng G, Ren J, Shang L, Bao Y. Sonic Hedgehog Signaling Pathway: A Role in Pain Processing. Neurochem Res 2023; 48:1611-1630. [PMID: 36738366 DOI: 10.1007/s11064-023-03864-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 02/05/2023]
Abstract
Pain, as one of the most prevalent clinical symptoms, is a complex physiological and psychological activity. Long-term severe pain can become unbearable to the body. However, existing treatments do not provide satisfactory results. Therefore, new mechanisms and therapeutic targets need to be urgently explored for pain management. The Sonic hedgehog (Shh) signaling pathway is crucial in embryonic development, cell differentiation and proliferation, and nervous system regulation. Here, we review the recent studies on the Shh signaling pathway and its action in multiple pain-related diseases. The Shh signaling pathway is dysregulated under various pain conditions, such as pancreatic cancer pain, bone cancer pain, chronic post-thoracotomy pain, pain caused by degenerative lumbar disc disease, and toothache. Further studies on the Shh signaling pathway may provide new therapeutic options for pain patients.
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Affiliation(s)
- Guangda Zheng
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beixiange 5, Xicheng District, Beijing, 100053, China
| | - Juanxia Ren
- Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, Liaoning Province, China
| | - Lu Shang
- Liaoning University of Traditional Chinese Medicine, Shenyang, 110847, Liaoning Province, China
| | - Yanju Bao
- Department of Oncology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beixiange 5, Xicheng District, Beijing, 100053, China.
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25
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Costa MR, Dos Santos AYI, de Miranda TB, Aires R, de Camargo Coque A, Hurtado ECP, Bernardi MM, Pecorari VGA, Andia DC, Birbrair A, Guillemin GJ, Latini A, da Silva RA. Impact of neuroinflammation on epigenetic transcriptional control of Sonic Hedgehog members in the central nervous system. Brain Res 2023; 1799:148180. [PMID: 36463954 DOI: 10.1016/j.brainres.2022.148180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/14/2022] [Accepted: 11/23/2022] [Indexed: 12/03/2022]
Abstract
Sonic Hedgehog (Shh) signaling plays a critical role during central nervous system (CNS) development, and its dysregulation leads to neurological disorders. Nevertheless, little is known about Shh signaling regulation in the adult brain. Here, we investigated the contribution of DNA methylation on the transcriptional control of Shh signaling pathway members and its basal distribution impact on the brain, as well as its modulation by inflammation. The methylation status of the promoter regions of these members and the transcriptional profile of DNA-modifying enzymes (DNA Methyltransferases - DNMTs and Tet Methylcytosine Dioxygenase - TETs) were investigated in a murine model of neuroinflammation by qPCR. We showed that, in the adult brain, methylation in the CpG promoter regions of the Shh signaling pathway members was critical to determine the endogenous differential transcriptional pattern observed between distinct brain regions. We also found that neuroinflammation differentially modulates gene expression of DNA-modifying enzymes. This study reveals the basal transcriptional profile of DNMTs and TETs enzymes in the CNS and demonstrates the effect of neuroinflammation on the transcriptional control of members of the Shh Signaling pathway in the adult brain.
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Affiliation(s)
| | | | | | - Rogério Aires
- Epigenetic Study Center and Gene Regulation - CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University, São Paulo 04026-002, São Paulo, Brazil
| | - Alex de Camargo Coque
- Epigenetic Study Center and Gene Regulation - CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University, São Paulo 04026-002, São Paulo, Brazil
| | - Elizabeth Cristina Perez Hurtado
- Epigenetic Study Center and Gene Regulation - CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University, São Paulo 04026-002, São Paulo, Brazil.
| | - Maria Martha Bernardi
- Epigenetic Study Center and Gene Regulation - CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University, São Paulo 04026-002, São Paulo, Brazil
| | | | - Denise Carleto Andia
- School of Dentistry, Health Science Institute, Paulista University, São Paulo 04026-002, São Paulo, Brazil.
| | - Alexander Birbrair
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gilles J Guillemin
- Neuroinflammation Group, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW 2109, Australia.
| | - Alexandra Latini
- Bioenergetics and Oxidative Stress Lab - LABOX, Department of Biochemistry, Center for Biological Sciences, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Rodrigo A da Silva
- School of Dentistry, University of Taubaté, 12020-3400 Taubaté, São Paulo, Brazil; Epigenetic Study Center and Gene Regulation - CEEpiRG, Program in Environmental and Experimental Pathology, Paulista University, São Paulo 04026-002, São Paulo, Brazil.
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26
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Prakash N. Developmental pathways linked to the vulnerability of adult midbrain dopaminergic neurons to neurodegeneration. Front Mol Neurosci 2022; 15:1071731. [PMID: 36618829 PMCID: PMC9815185 DOI: 10.3389/fnmol.2022.1071731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
The degeneration of dopaminergic and other neurons in the aging brain is considered a process starting well beyond the infantile and juvenile period. In contrast to other dopamine-associated neuropsychiatric disorders, such as schizophrenia and drug addiction, typically diagnosed during adolescence or young adulthood and, thus, thought to be rooted in the developing brain, Parkinson's Disease (PD) is rarely viewed as such. However, evidences have accumulated suggesting that several factors might contribute to an increased vulnerability to death of the dopaminergic neurons at an already very early (developmental) phase in life. Despite the remarkable ability of the brain to compensate such dopamine deficits, the early loss or dysfunction of these neurons might predispose an individual to suffer from PD because the critical threshold of dopamine function will be reached much earlier in life, even if the time-course and strength of naturally occurring and age-dependent dopaminergic cell death is not markedly altered in this individual. Several signaling and transcriptional pathways required for the proper embryonic development of the midbrain dopaminergic neurons, which are the most affected in PD, either continue to be active in the adult mammalian midbrain or are reactivated at the transition to adulthood and under neurotoxic conditions. The persistent activity of these pathways often has neuroprotective functions in adult midbrain dopaminergic neurons, whereas the reactivation of silenced pathways under pathological conditions can promote the survival and even regeneration of these neurons in the lesioned or aging brain. This article summarizes our current knowledge about signaling and transcription factors involved in midbrain dopaminergic neuron development, whose reduced gene dosage or signaling activity are implicated in a lower survival rate of these neurons in the postnatal or aging brain. It also discusses the evidences supporting the neuroprotection of the midbrain dopaminergic system after the external supply or ectopic expression of some of these secreted and nuclear factors in the adult and aging brain. Altogether, the timely monitoring and/or correction of these signaling and transcriptional pathways might be a promising approach to a much earlier diagnosis and/or prevention of PD.
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27
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Songco-Casey JO, Coffing GC, Piscopo DM, Pungor JR, Kern AD, Miller AC, Niell CM. Cell types and molecular architecture of the Octopus bimaculoides visual system. Curr Biol 2022; 32:5031-5044.e4. [PMID: 36318923 PMCID: PMC9815951 DOI: 10.1016/j.cub.2022.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/02/2022] [Accepted: 10/06/2022] [Indexed: 11/05/2022]
Abstract
Cephalopods have a remarkable visual system, with a camera-type eye and high acuity vision that they use for a wide range of sophisticated visually driven behaviors. However, the cephalopod brain is organized dramatically differently from that of vertebrates and invertebrates, and beyond neuroanatomical descriptions, little is known regarding the cell types and molecular determinants of their visual system organization. Here, we present a comprehensive single-cell molecular atlas of the octopus optic lobe, which is the primary visual processing structure in the cephalopod brain. We combined single-cell RNA sequencing with RNA fluorescence in situ hybridization to both identify putative molecular cell types and determine their anatomical and spatial organization within the optic lobe. Our results reveal six major neuronal cell classes identified by neurotransmitter/neuropeptide usage, in addition to non-neuronal and immature neuronal populations. We find that additional markers divide these neuronal classes into subtypes with distinct anatomical localizations, revealing further diversity and a detailed laminar organization within the optic lobe. We also delineate the immature neurons within this continuously growing tissue into subtypes defined by evolutionarily conserved developmental genes as well as novel cephalopod- and octopus-specific genes. Together, these findings outline the organizational logic of the octopus visual system, based on functional determinants, laminar identity, and developmental markers/pathways. The resulting atlas presented here details the "parts list" for neural circuits used for vision in octopus, providing a platform for investigations into the development and function of the octopus visual system as well as the evolution of visual processing.
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Affiliation(s)
| | - Gabrielle C Coffing
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Denise M Piscopo
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | - Judit R Pungor
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | - Andrew D Kern
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Adam C Miller
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
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28
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Zhang Y, Kuai S, Zhang Y, Xue H, Wu Z, Zhao P. Maternal sevoflurane exposure affects neural stem cell differentiation in offspring rats through NRF2 signaling. Neurotoxicology 2022; 93:348-354. [DOI: 10.1016/j.neuro.2022.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 10/15/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
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29
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Modeling Movement Disorders via Generation of hiPSC-Derived Motor Neurons. Cells 2022; 11:cells11233796. [PMID: 36497056 PMCID: PMC9737271 DOI: 10.3390/cells11233796] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/19/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Generation of motor neurons (MNs) from human-induced pluripotent stem cells (hiPSCs) overcomes the limited access to human brain tissues and provides an unprecedent approach for modeling MN-related diseases. In this review, we discuss the recent progression in understanding the regulatory mechanisms of MN differentiation and their applications in the generation of MNs from hiPSCs, with a particular focus on two approaches: induction by small molecules and induction by lentiviral delivery of transcription factors. At each induction stage, different culture media and supplements, typical growth conditions and cellular morphology, and specific markers for validation of cell identity and quality control are specifically discussed. Both approaches can generate functional MNs. Currently, the major challenges in modeling neurological diseases using iPSC-derived neurons are: obtaining neurons with high purity and yield; long-term neuron culture to reach full maturation; and how to culture neurons more physiologically to maximize relevance to in vivo conditions.
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30
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Remodeling of the Neurovascular Unit Following Cerebral Ischemia and Hemorrhage. Cells 2022; 11:cells11182823. [PMID: 36139398 PMCID: PMC9496956 DOI: 10.3390/cells11182823] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/18/2022] [Accepted: 08/30/2022] [Indexed: 11/23/2022] Open
Abstract
Formulated as a group effort of the stroke community, the transforming concept of the neurovascular unit (NVU) depicts the structural and functional relationship between brain cells and the vascular structure. Composed of both neural and vascular elements, the NVU forms the blood-brain barrier that regulates cerebral blood flow to meet the oxygen demand of the brain in normal physiology and maintain brain homeostasis. Conversely, the dysregulation and dysfunction of the NVU is an essential pathological feature that underlies neurological disorders spanning from chronic neurodegeneration to acute cerebrovascular events such as ischemic stroke and cerebral hemorrhage, which were the focus of this review. We also discussed how common vascular risk factors of stroke predispose the NVU to pathological changes. We synthesized existing literature and first provided an overview of the basic structure and function of NVU, followed by knowledge of how these components remodel in response to ischemic stroke and brain hemorrhage. A greater understanding of the NVU dysfunction and remodeling will enable the design of targeted therapies and provide a valuable foundation for relevant research in this area.
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Genetic Parameter Estimation and Genome-Wide Association Analysis of Social Genetic Effects on Average Daily Gain in Purebreds and Crossbreds. Animals (Basel) 2022; 12:ani12172300. [PMID: 36078021 PMCID: PMC9454713 DOI: 10.3390/ani12172300] [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: 07/13/2022] [Revised: 08/23/2022] [Accepted: 09/01/2022] [Indexed: 11/29/2022] Open
Abstract
Simple Summary Average daily gain (ADG) is influenced by both an individual’s direct genetic effect (DGE) and by a social genetic effect (SGE) derived from pen mates. Therefore, identifying the DGE and SGE on ADG is essential for a better understanding of pig breeding systems. We conducted this study to elucidate the genetic characteristics and relationships of DGE and SGE on ADG using purebred and crossbred pigs. We found that the DGE and SGE both contributed to ADG in both populations. In addition, the SGE of purebred pigs was highly correlated with the DGE of crossbred pigs. Furthermore, we identified several genomic regions that may be associated with the DGE and SGE on ADG. Our findings will contribute to future genomic evaluation studies of socially affected traits. Abstract Average daily gain (ADG) is an important growth trait in the pig industry. The direct genetic effect (DGE) has been studied mainly to assess the association between genetic information and economic traits. The social genetic effect (SGE) has been shown to affect ADG simultaneously with the DGE because of group housing systems. We conducted this study to elucidate the genetic characteristics and relationships of the DGE and SGE of purebred Korean Duroc and crossbred pigs by single-step genomic best linear unbiased prediction and a genome-wide association study. We used the genotype, phenotype, and pedigree data of 1779, 6022, and 7904 animals, respectively. Total heritabilities on ADG were 0.19 ± 0.04 and 0.39 ± 0.08 for purebred and crossbred pigs, respectively. The genetic correlation was the greatest (0.77 ± 0.12) between the SGE of purebred and DGE of crossbred pigs. We found candidate genes located in the quantitative trait loci (QTLs) for the SGE that were associated with behavior and neurodegenerative diseases, and candidate genes in the QTLs for DGE that were related to body mass, size of muscle fiber, and muscle hypertrophy. These results suggest that the genomic selection of purebred animals could be applied for crossbred performance.
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32
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Qi Y, Yang C, Zhao H, Deng Z, Xu J, Liang W, Sun Z, Nieland JDV. Neuroprotective Effect of Sonic Hedgehog Mediated PI3K/AKT Pathway in Amyotrophic Lateral Sclerosis Model Mice. Mol Neurobiol 2022; 59:6971-6982. [PMID: 36056982 PMCID: PMC9525365 DOI: 10.1007/s12035-022-03013-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/16/2022] [Indexed: 11/27/2022]
Abstract
The Sonic Hedgehog (SHH) signaling pathway is related to the progression of various tumors and nervous system diseases. Still, its specific role in neurodegenerative diseases, such as amyotrophic lateral sclerosis (ALS), remains studied. This research investigates the role of SHH and PI3K/AKT signaling pathway proteins on ALS development in a SOD1-G93A transgenic mouse model. After injection of SHH and PI3K/AKT signaling pathway inhibitors or agonists in hSOD1-G93A (9 weeks of age) transgenic mice, we studied skeletal muscle pathology using immunohistochemical staining and Western blot methods. In addition, recorded data on rotation time, weight, and survival were analyzed for these mice. Our study showed that the expression of SHH, Gli-1 and p-AKT in ALS mice decreased with the progression of the disease. The expression of p-AKT changed together with Gli-1 while injecting PI3K/AKT signaling pathway inhibitor or agonist; SHH and Gli-1 protein expression remained unchanged; p-AKT protein expression significantly decreased while injecting PI3K/AKT signaling pathway inhibitor. These results indicate that SHH has a regulatory effect on PI3K/AKT signaling pathway. In behavioral experiments, we found that the survival time of hSOD1-G93A mice was prolonged by injection of SHH agonist while shortened by injection of SHH inhibitor. In conclusion, we confirmed that the SHH pathway played a neuroprotective role in ALS by mediating PI3K/AKT signaling pathway.
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Affiliation(s)
- Yan Qi
- Department of Neurology, Second Hospital of Shanxi Medical University, Shanxi, China
- Shanxi Medical University, Shanxi, China
| | - Chen Yang
- Department of Neurology, Second Hospital of Shanxi Medical University, Shanxi, China
| | - Hui Zhao
- Shanxi Medical University, Shanxi, China
| | - Zhanjin Deng
- Department of Neurology, Second Hospital of Shanxi Medical University, Shanxi, China
| | - Jin Xu
- Shanxi Medical University, Shanxi, China
| | | | - Zhitang Sun
- Department of Neurology, Second Hospital of Shanxi Medical University, Shanxi, China
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Drugs and Endogenous Factors as Protagonists in Neurogenic Stimulation. Stem Cell Rev Rep 2022; 18:2852-2871. [PMID: 35962176 DOI: 10.1007/s12015-022-10423-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2022] [Indexed: 10/15/2022]
Abstract
Neurogenesis is a biological process characterized by new neurons formation from stem cells. For decades, it was believed that neurons only multiplied during development and in the postnatal period but the discovery of neural stem cells (NSCs) in mature brain promoted a revolution in neuroscience field. In mammals, neurogenesis consists of migration, differentiation, maturation, as well as functional integration of newborn cells into the pre-existing neuronal circuit. Actually, NSC density drops significantly after the first stages of development, however in specific places in the brain, called neurogenic niches, some of these cells retain their ability to generate new neurons and glial cells in adulthood. The subgranular (SGZ), and the subventricular zones (SVZ) are examples of regions where the neurogenesis process occurs in the mature brain. There, the potential of NSCs to produce new neurons has been explored by new advanced methodologies and in neuroscience for the treatment of brain damage and/or degeneration. Based on that, this review highlights endogenous factors and drugs capable of stimulating neurogenesis, as well as the perspectives for the use of NSCs for neurological and neurodegenerative diseases.
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Bahado-Singh RO, Radhakrishna U, Gordevičius J, Aydas B, Yilmaz A, Jafar F, Imam K, Maddens M, Challapalli K, Metpally RP, Berrettini WH, Crist RC, Graham SF, Vishweswaraiah S. Artificial Intelligence and Circulating Cell-Free DNA Methylation Profiling: Mechanism and Detection of Alzheimer's Disease. Cells 2022; 11:cells11111744. [PMID: 35681440 PMCID: PMC9179874 DOI: 10.3390/cells11111744] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 02/01/2023] Open
Abstract
Background: Despite extensive efforts, significant gaps remain in our understanding of Alzheimer’s disease (AD) pathophysiology. Novel approaches using circulating cell-free DNA (cfDNA) have the potential to revolutionize our understanding of neurodegenerative disorders. Methods: We performed DNA methylation profiling of cfDNA from AD patients and compared them to cognitively normal controls. Six Artificial Intelligence (AI) platforms were utilized for the diagnosis of AD while enrichment analysis was used to elucidate the pathogenesis of AD. Results: A total of 3684 CpGs were significantly (adj. p-value < 0.05) differentially methylated in AD versus controls. All six AI algorithms achieved high predictive accuracy (AUC = 0.949−0.998) in an independent test group. As an example, Deep Learning (DL) achieved an AUC (95% CI) = 0.99 (0.95−1.0), with 94.5% sensitivity and specificity. Conclusion: We describe numerous epigenetically altered genes which were previously reported to be differentially expressed in the brain of AD sufferers. Genes identified by AI to be the best predictors of AD were either known to be expressed in the brain or have been previously linked to AD. We highlight enrichment in the Calcium signaling pathway, Glutamatergic synapse, Hedgehog signaling pathway, Axon guidance and Olfactory transduction in AD sufferers. To the best of our knowledge, this is the first reported genome-wide DNA methylation study using cfDNA to detect AD.
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Affiliation(s)
- Ray O. Bahado-Singh
- Department of Obstetrics and Gynecology, Oakland University-William Beaumont School of Medicine, Royal Oak, MI 48309, USA; (R.O.B.-S.); (A.Y.); (S.F.G.)
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
| | - Uppala Radhakrishna
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
- Correspondence: (U.R.); (S.V.); Tel.: +1-248-551-2574 (U.R.); +1-248-551-2569 (S.V.)
| | - Juozas Gordevičius
- Vugene, LLC, 625 Kenmoor Ave Suite 301 PMB 96578, Grand Rapids, MI 49546, USA;
| | - Buket Aydas
- Department of Care Management Analytics, Blue Cross Blue Shield of Michigan, Detroit, MI 48226, USA;
| | - Ali Yilmaz
- Department of Obstetrics and Gynecology, Oakland University-William Beaumont School of Medicine, Royal Oak, MI 48309, USA; (R.O.B.-S.); (A.Y.); (S.F.G.)
- Department of Alzheimer’s Disease Research, Beaumont Research Institute, 3811 W. 13 Mile Road, Royal Oak, MI 48073, USA
| | - Faryal Jafar
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
| | - Khaled Imam
- Department of Internal Medicine, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (K.I.); (M.M.)
| | - Michael Maddens
- Department of Internal Medicine, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (K.I.); (M.M.)
| | - Kshetra Challapalli
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
| | - Raghu P. Metpally
- Department of Molecular and Functional Genomics, Geisinger, Danville, PA 17821, USA; (R.P.M.); (W.H.B.)
| | - Wade H. Berrettini
- Department of Molecular and Functional Genomics, Geisinger, Danville, PA 17821, USA; (R.P.M.); (W.H.B.)
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
| | - Richard C. Crist
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA;
| | - Stewart F. Graham
- Department of Obstetrics and Gynecology, Oakland University-William Beaumont School of Medicine, Royal Oak, MI 48309, USA; (R.O.B.-S.); (A.Y.); (S.F.G.)
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
- Department of Alzheimer’s Disease Research, Beaumont Research Institute, 3811 W. 13 Mile Road, Royal Oak, MI 48073, USA
| | - Sangeetha Vishweswaraiah
- Department of Obstetrics and Gynecology, Beaumont Health, 3601 W. 13 Mile Road, Royal Oak, MI 48073, USA; (F.J.); (K.C.)
- Correspondence: (U.R.); (S.V.); Tel.: +1-248-551-2574 (U.R.); +1-248-551-2569 (S.V.)
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Teplyashina EA, Gorina YV, Khilazheva ED, Boytsova EB, Mosyagina AI, Malinovskaya NA, Komleva YK, Morgun AV, Uspenskaya YA, Shuvaev AN, Salmina AB. Cells of Cerebrovascular Endothelium and Perivascular Astroglia in the Regulation of Neurogenesis. J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022030097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Prophylactic Activation of Shh Signaling Attenuates TBI-Induced Seizures in Zebrafish by Modulating Glutamate Excitotoxicity through Eaat2a. Biomedicines 2021; 10:biomedicines10010032. [PMID: 35052712 PMCID: PMC8773121 DOI: 10.3390/biomedicines10010032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/16/2021] [Accepted: 12/22/2021] [Indexed: 12/21/2022] Open
Abstract
Approximately 2 million individuals experience a traumatic brain injury (TBI) every year in the United States. Secondary injury begins within minutes after TBI, with alterations in cellular function and chemical signaling that contribute to excitotoxicity. Post-traumatic seizures (PTS) are experienced in an increasing number of TBI individuals that also display resistance to traditional anti-seizure medications (ASMs). Sonic hedgehog (Shh) is a signaling pathway that is upregulated following central nervous system damage in zebrafish and aids injury-induced regeneration. Using a modified Marmarou weight drop on adult zebrafish, we examined PTS following TBI and Shh modulation. We found that inhibiting Shh signaling by cyclopamine significantly increased PTS in TBI fish, prolonged the timeframe PTS was observed, and decreased survival across all TBI severities. Shh-inhibited TBI fish failed to respond to traditional ASMs, but were attenuated when treated with CNQX, which blocks ionotropic glutamate receptors. We found that the Smoothened agonist, purmorphamine, increased Eaat2a expression in undamaged brains compared to untreated controls, and purmorphamine treatment reduced glutamate excitotoxicity following TBI. Similarly, purmorphamine reduced PTS, edema, and cognitive deficits in TBI fish, while these pathologies were increased and/or prolonged in cyclopamine-treated TBI fish. However, the increased severity of TBI phenotypes with cyclopamine was reduced by cotreating fish with ceftriaxone, which induces Eaat2a expression. Collectively, these data suggest that Shh signaling induces Eaat2a expression and plays a role in regulating TBI-induced glutamate excitotoxicity and TBI sequelae.
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