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Arshad N, Biswas N, Gill J, Kesari S, Ashili S. Drug delivery in leptomeningeal disease: Navigating barriers and beyond. Drug Deliv 2024; 31:2375521. [PMID: 38995190 PMCID: PMC11249152 DOI: 10.1080/10717544.2024.2375521] [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: 12/04/2023] [Accepted: 06/27/2024] [Indexed: 07/13/2024] Open
Abstract
Leptomeningeal disease (LMD) refers to the infiltration of cancer cells into the leptomeningeal compartment. Leptomeninges are the two membranous layers, called the arachnoid membrane and pia mater. The diffuse nature of LMD poses a challenge to its effective diagnosis and successful management. Furthermore, the predominant phenotype; solid masses or freely floating cells, has altering implications on the effectiveness of drug delivery systems. The standard of care is the intrathecal delivery of chemotherapy drugs but it is associated with increased instances of treatment-related complications, low patient compliance, and suboptimal drug distribution. An alternative involves administering the drugs systemically, after which they must traverse fluid barriers to arrive at their destination within the leptomeningeal space. However, this route is known to cause off-target effects as well as produce subtherapeutic drug concentrations at the target site within the central nervous system. The development of new drug delivery systems such as liposomal cytarabine has improved drug delivery in leptomeningeal metastatic disease, but much still needs to be done to effectively target this challenging condition. In this review, we discuss about the anatomy of leptomeninges relevant for drug penetration, the conventional and advanced drug delivery methods for LMD. We also discuss the future directions being set by different clinical trials.
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Affiliation(s)
| | - Nupur Biswas
- Rhenix Lifesciences, Hyderabad, Telangana, India
- CureScience, San Diego, California, USA
| | - Jaya Gill
- CureScience, San Diego, California, USA
| | - Santosh Kesari
- Department of Translational Neurosciences, Pacific Neuroscience Institute and Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, California, USA
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2
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Liu L, Zhao B, Yu Y, Gao W, Liu W, Chen L, Xia Z, Cao Q. Vascular Aging in Ischemic Stroke. J Am Heart Assoc 2024:e033341. [PMID: 39023057 DOI: 10.1161/jaha.123.033341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Cellular senescence, a permanent halt in cell division due to stress, spurs functional and structural changes, contributing to vascular aging characterized by endothelial dysfunction and vascular remodeling. This process raises the risk of ischemic stroke (IS) in older individuals, with its mechanisms still not completely understood despite ongoing research efforts. In this review, we have analyzed the impact of vascular aging on increasing susceptibility and exacerbating the pathology of IS. We have emphasized the detrimental effects of endothelial dysfunction and vascular remodeling influenced by oxidative stress and inflammatory response on vascular aging and IS. Our goal is to aid the understanding of vascular aging and IS pathogenesis, particularly benefiting older adults with high risk of IS.
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Affiliation(s)
- Lian Liu
- Department of Anesthesiology Renmin Hospital of Wuhan University Wuhan China
| | - Bo Zhao
- Department of Anesthesiology Renmin Hospital of Wuhan University Wuhan China
| | - Yueyang Yu
- Taikang Medical School, School of Basic Medical Sciences Wuhan University Wuhan China
| | - Wenwei Gao
- Department of Critical Care Medicine Renmin Hospital of Wuhan University Wuhan China
| | - Weitu Liu
- Department of Pathology Hubei Provincial Hospital of Traditional Chinese Medicine Wuhan China
| | - Lili Chen
- Department of Anesthesiology Renmin Hospital of Wuhan University Wuhan China
| | - Zhongyuan Xia
- Department of Anesthesiology Renmin Hospital of Wuhan University Wuhan China
| | - Quan Cao
- Department of Nephrology Zhongnan Hospital of Wuhan University Wuhan China
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3
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He X, Xiong D, Zhao L, Fu J, Luo L. Meningeal lymphatic supporting cells govern the formation and maintenance of zebrafish mural lymphatic endothelial cells. Nat Commun 2024; 15:5547. [PMID: 38956047 PMCID: PMC11220022 DOI: 10.1038/s41467-024-49818-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024] Open
Abstract
The meninges are critical for the brain functions, but the diversity of meningeal cell types and intercellular interactions have yet to be thoroughly examined. Here we identify a population of meningeal lymphatic supporting cells (mLSCs) in the zebrafish leptomeninges, which are specifically labeled by ependymin. Morphologically, mLSCs form membranous structures that enwrap the majority of leptomeningeal blood vessels and all the mural lymphatic endothelial cells (muLECs). Based on its unique cellular morphologies and transcriptional profile, mLSC is characterized as a unique cell type different from all the currently known meningeal cell types. Because of the formation of supportive structures and production of pro-lymphangiogenic factors, mLSCs not only promote muLEC development and maintain the dispersed distributions of muLECs in the leptomeninges, but also are required for muLEC regeneration after ablation. This study characterizes a newly identified cell type in leptomeninges, mLSC, which is required for muLEC development, maintenance, and regeneration.
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Affiliation(s)
- Xiang He
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, 400715, China
| | - Daiqin Xiong
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, 400715, China
| | - Lei Zhao
- Shaanxi Key Laboratory of Qinling Ecological Intelligent Monitoring and Protection, School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Jialong Fu
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, 400715, China
| | - Lingfei Luo
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, 400715, China.
- School of Life Sciences, Fudan University, Yangpu, Shanghai, 200438, China.
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4
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Abdal Dayem A, Yan E, Do M, Kim Y, Lee Y, Cho SG, Kim DH. Engineering extracellular vesicles for ROS scavenging and tissue regeneration. NANO CONVERGENCE 2024; 11:24. [PMID: 38922501 PMCID: PMC11208369 DOI: 10.1186/s40580-024-00430-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 05/22/2024] [Indexed: 06/27/2024]
Abstract
Stem cell therapy holds promise for tissue regeneration, yet significant challenges persist. Emerging as a safer and potentially more effective alternative, extracellular vesicles (EVs) derived from stem cells exhibit remarkable abilities to activate critical signaling cascades, thereby facilitating tissue repair. EVs, nano-scale membrane vesicles, mediate intercellular communication by encapsulating a diverse cargo of proteins, lipids, and nucleic acids. Their therapeutic potential lies in delivering cargos, activating signaling pathways, and efficiently mitigating oxidative stress-an essential aspect of overcoming limitations in stem cell-based tissue repair. This review focuses on engineering and applying EVs in tissue regeneration, emphasizing their role in regulating reactive oxygen species (ROS) pathways. Additionally, we explore strategies to enhance EV therapeutic activity, including functionalization and incorporation of antioxidant defense proteins. Understanding these molecular mechanisms is crucial for optimizing EV-based regenerative therapies. Insights into EV and ROS signaling modulation pave the way for targeted and efficient regenerative therapies harnessing the potential of EVs.
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Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center, Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Ellie Yan
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Minjae Do
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Yoojung Kim
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center, Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Yeongseo Lee
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center, Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center, Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea.
- R&D Team, StemExOne Co., Ltd., 307 KU Technology Innovation Bldg, 120, Neungdong-ro, Gwangjin- gu, Seoul, 05029, Republic of Korea.
| | - Deok-Ho Kim
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA.
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA.
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, 21205, USA.
- Center for Microphysiological Systems, Johns Hopkins University, Baltimore, MD, 21205, USA.
- Institute for NanoBiotechnology, Johns Hopkins University, Baltimore, MD, 21218, USA.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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5
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Whiteley AE, Ma D, Wang L, Yu SY, Yin C, Price TT, Simon BG, Xu KR, Marsh KA, Brockman ML, Prioleau TM, Zhou KI, Cui X, Fecci PE, Jeck WR, McCall CM, Neff JL, Sipkins DA. Breast cancer exploits neural signaling pathways for bone-to-meninges metastasis. Science 2024; 384:eadh5548. [PMID: 38900896 DOI: 10.1126/science.adh5548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 04/23/2024] [Indexed: 06/22/2024]
Abstract
The molecular mechanisms that regulate breast cancer cell (BCC) metastasis and proliferation within the leptomeninges (LM) are poorly understood, which limits the development of effective therapies. In this work, we show that BCCs in mice can invade the LM by abluminal migration along blood vessels that connect vertebral or calvarial bone marrow and meninges, bypassing the blood-brain barrier. This process is dependent on BCC engagement with vascular basement membrane laminin through expression of the neuronal pathfinding molecule integrin α6. Once in the LM, BCCs colocalize with perivascular meningeal macrophages and induce their expression of the prosurvival neurotrophin glial-derived neurotrophic factor (GDNF). Intrathecal GDNF blockade, macrophage-specific GDNF ablation, or deletion of the GDNF receptor neural cell adhesion molecule (NCAM) from BCCs inhibits breast cancer growth within the LM. These data suggest integrin α6 and the GDNF signaling axis as new therapeutic targets against breast cancer LM metastasis.
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Affiliation(s)
- Andrew E Whiteley
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Danhui Ma
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Lihua Wang
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Seok-Yeong Yu
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Claire Yin
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Trevor T Price
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Brennan G Simon
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Katie R Xu
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Kathleen A Marsh
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Maegan L Brockman
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Tatiana M Prioleau
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Katherine I Zhou
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
| | - Xiuyu Cui
- Department of Neurosurgery, Duke University, Durham, NC 27710, USA
| | - Peter E Fecci
- Department of Neurosurgery, Duke University, Durham, NC 27710, USA
| | - William R Jeck
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Chad M McCall
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Jadee L Neff
- Department of Pathology, Duke University, Durham, NC 27710, USA
| | - Dorothy A Sipkins
- Department of Medicine, Division of Hematologic Malignancies and Cellular Therapy, Duke University, Durham, NC 27710, USA
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Balzano T, Del Rey NLG, Esteban-García N, Reinares-Sebastián A, Pineda-Pardo JA, Trigo-Damas I, Obeso JA, Blesa J. Neurovascular and immune factors of vulnerability of substantia nigra dopaminergic neurons in non-human primates. NPJ Parkinsons Dis 2024; 10:118. [PMID: 38886348 PMCID: PMC11183116 DOI: 10.1038/s41531-024-00735-w] [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: 11/20/2023] [Accepted: 05/30/2024] [Indexed: 06/20/2024] Open
Abstract
Dopaminergic neurons in the ventral tier of the substantia nigra pars compacta (SNc) degenerate prominently in Parkinson's disease (PD), while those in the dorsal tier and ventral tegmental area are relatively spared. The factors determining why these neurons are more vulnerable than others are still unrevealed. Neuroinflammation and immune cell infiltration have been demonstrated to be a key feature of neurodegeneration in PD. However, the link between selective dopaminergic neuron vulnerability, glial and immune cell response, and vascularization and their interactions has not been deciphered. We aimed to investigate the contribution of glial cell activation and immune cell infiltration in the selective vulnerability of ventral dopaminergic neurons within the midbrain in a non-human primate model of PD. Structural characteristics of the vasculature within specific regions of the midbrain were also evaluated. Parkinsonian monkeys exhibited significant microglial and astroglial activation in the whole midbrain, but no major sub-regional differences were observed. Remarkably, the ventral substantia nigra was found to be typically more vascularized compared to other regions. This feature might play some role in making this region more susceptible to immune cell infiltration under pathological conditions, as greater infiltration of both T- and B- lymphocytes was observed in parkinsonian monkeys. Higher vascular density within the ventral region of the SNc may be a relevant factor for differential vulnerability of dopaminergic neurons in the midbrain. The increased infiltration of T- and B- cells in this region, alongside other molecules or toxins, may also contribute to the susceptibility of dopaminergic neurons in PD.
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Affiliation(s)
- Tiziano Balzano
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain.
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
| | - Natalia López-González Del Rey
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- PhD Program in Neuroscience Autónoma de Madrid University-Cajal Institute, Madrid, Spain
| | - Noelia Esteban-García
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- PhD Program in Neuroscience Autónoma de Madrid University-Cajal Institute, Madrid, Spain
| | - Alejandro Reinares-Sebastián
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Network Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Instituto Carlos III, Madrid, Spain
| | - José A Pineda-Pardo
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Network Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Instituto Carlos III, Madrid, Spain
| | - Inés Trigo-Damas
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Network Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Instituto Carlos III, Madrid, Spain
- Facultad HM de Ciencias de la Salud de la Universidad Camilo José Cela, Madrid, Spain
| | - José A Obeso
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Network Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Instituto Carlos III, Madrid, Spain
| | - Javier Blesa
- HM CINAC (Centro Integral de Neurociencias Abarca Campal), Hospital Universitario HM Puerta del Sur, HM Hospitales, Madrid, Spain.
- Instituto de Investigación Sanitaria HM Hospitales, Madrid, Spain.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
- Network Center for Biomedical Research on Neurodegenerative Diseases (CIBERNED), Instituto Carlos III, Madrid, Spain.
- Facultad HM de Ciencias de la Salud de la Universidad Camilo José Cela, Madrid, Spain.
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Wellford SA, Moseman EA. Olfactory immunology: the missing piece in airway and CNS defence. Nat Rev Immunol 2024; 24:381-398. [PMID: 38097777 DOI: 10.1038/s41577-023-00972-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2023] [Indexed: 12/23/2023]
Abstract
The olfactory mucosa is a component of the nasal airway that mediates the sense of smell. Recent studies point to an important role for the olfactory mucosa as a barrier to both respiratory pathogens and to neuroinvasive pathogens that hijack the olfactory nerve and invade the CNS. In particular, the COVID-19 pandemic has demonstrated that the olfactory mucosa is an integral part of a heterogeneous nasal mucosal barrier critical to upper airway immunity. However, our insufficient knowledge of olfactory mucosal immunity hinders attempts to protect this tissue from infection and other diseases. This Review summarizes the state of olfactory immunology by highlighting the unique immunologically relevant anatomy of the olfactory mucosa, describing what is known of olfactory immune cells, and considering the impact of common infectious diseases and inflammatory disorders at this site. We will offer our perspective on the future of the field and the many unresolved questions pertaining to olfactory immunity.
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Affiliation(s)
- Sebastian A Wellford
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
| | - E Ashley Moseman
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA.
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8
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Watanabe G, Young K, Rauber E, Khan MF, Suzuki R, Riestenberg R, Umana GE, Palmisciano P. A systematic review of extraneural meningioma metastasis: timing, evolution and outlook. J Neurooncol 2024; 168:187-196. [PMID: 38530549 DOI: 10.1007/s11060-024-04659-6] [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: 02/08/2024] [Accepted: 03/23/2024] [Indexed: 03/28/2024]
Abstract
PURPOSE Extraneural meningioma metastasis is a rare occurrence and may pose a clinical challenge due to its unclear prognosis. In this systematic review, we analyze patient demographics, clinical characteristics, management strategies, and outcomes. METHODS PubMed, EMBASE, Scopus, Cochrane, and Web of Science databases were searched from inception to February 23, 2024 for cases of metastatic meningioma according to PRISMA guidelines. Descriptive statistics, Mann-Whitney U test, Fisher's exact tests, Kaplan-Meier curves, and log-rank tests were used for selected analyses. RESULTS A total of 288 patients (52% male) were included with an average age of 49 years at meningioma diagnosis. Tumors were distributed across WHO grade 1 (38%), 2 (36%), and 3 (26%). Most patients experienced intracranial recurrence (79%) and mean time to first metastasis was approximately 8 years. No change in WHO grade between primary and metastasis was observed for most cases (65%). Treatment of the initial metastasis was most often with surgery (43%), chemotherapy (20%), or no treatment (14%). Half of the patients were alive (50%) with an average follow-up of 3 years following metastasis. Overall median survival was 36 months for the entire cohort. This differed significantly between WHO grade 1 versus 2/3 meningioma primaries (168 vs. 15 months, p < 0.005). CONCLUSION Metastatic meningioma appears to be associated with more positive prognosis than other brain tumor types with extra-neural metastasis or metastasis in general. This is particularly true for cases arising from a WHO grade 1 meningioma.
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Affiliation(s)
- Gina Watanabe
- John A. Burns School of Medicine, University of Hawaii at Manoa, 5080 Likini St #417, Honolulu, HI, 96818, USA.
| | - Kurtis Young
- Department of Otolaryngology, University of Nevada, Las Vegas, NV, USA
| | - Erin Rauber
- School of Medicine, University of Kansas, Kansas City, KS, USA
| | | | - Reannon Suzuki
- John A. Burns School of Medicine, University of Hawaii at Manoa, 5080 Likini St #417, Honolulu, HI, 96818, USA
| | - Robert Riestenberg
- Department of Neurological Surgery, University of California Davis, Sacramento, CA, USA
| | - Giuseppe E Umana
- Department of Neurosurgery, Trauma Center, Gamma Knife Center, Cannizzaro Hospital, Catania, Italy
| | - Paolo Palmisciano
- Department of Neurological Surgery, University of California Davis, Sacramento, CA, USA
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Chen L, Yang W, Yang F, Xu T, Yu Y, Wu Q, Han Y. Astrocyte mitochondria: Potential therapeutic targets for epilepsy. Heliyon 2024; 10:e29950. [PMID: 38756598 PMCID: PMC11096718 DOI: 10.1016/j.heliyon.2024.e29950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 04/08/2024] [Accepted: 04/17/2024] [Indexed: 05/18/2024] Open
Abstract
Epilepsy is a chronic, relapsing neurological disorder, and current treatments focus primarily on neurons, yet one-third of patients still develop drug-resistant epilepsy. Therefore, there is an urgent need to explore new therapeutic targets. Interestingly, astrocytes can transfer their healthy mitochondria into neighboring neurons, thus preventing neuronal damage. Astrocyte mitochondria have been shown to have a therapeutic role in stroke and neurodegenerative diseases. However, their therapeutic effect in epilepsy and its related mechanisms have been less studied. In this review, we mainly summarize the regulatory role of astrocyte mitochondria in glutamate, calcium ion, and adenosine triphosphate (ATP) homeostasis and outline the protective role of astrocyte mitochondria in nervous system diseases, revealing a new target for epilepsy treatment.
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Affiliation(s)
| | | | - Fei Yang
- First Department of Neurology, First Affiliated Hospital, Kunming Medical University, 295 Xi Chang Road, Kunming, Yunnan 650032, PR China
| | - Tingwan Xu
- First Department of Neurology, First Affiliated Hospital, Kunming Medical University, 295 Xi Chang Road, Kunming, Yunnan 650032, PR China
| | - Yanying Yu
- First Department of Neurology, First Affiliated Hospital, Kunming Medical University, 295 Xi Chang Road, Kunming, Yunnan 650032, PR China
| | - Qian Wu
- First Department of Neurology, First Affiliated Hospital, Kunming Medical University, 295 Xi Chang Road, Kunming, Yunnan 650032, PR China
| | - Yanbing Han
- First Department of Neurology, First Affiliated Hospital, Kunming Medical University, 295 Xi Chang Road, Kunming, Yunnan 650032, PR China
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10
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Wang L, Zheng J, Zhao S, Wan Y, Wang M, Bosco DB, Kuan CY, Richardson JR, Wu LJ. CCR2 + monocytes replenish border-associated macrophages in the diseased mouse brain. Cell Rep 2024; 43:114120. [PMID: 38625796 PMCID: PMC11105166 DOI: 10.1016/j.celrep.2024.114120] [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: 08/05/2023] [Revised: 02/06/2024] [Accepted: 03/30/2024] [Indexed: 04/18/2024] Open
Abstract
Border-associated macrophages (BAMs) are tissue-resident macrophages that reside at the border of the central nervous system (CNS). Since BAMs originate from yolk sac progenitors that do not persist after birth, the means by which this population of cells is maintained is not well understood. Using two-photon microscopy and multiple lineage-tracing strategies, we determine that CCR2+ monocytes are significant contributors to BAM populations following disruptions of CNS homeostasis in adult mice. After BAM depletion, while the residual BAMs possess partial self-repopulation capability, the CCR2+ monocytes are a critical source of the repopulated BAMs. In addition, we demonstrate the existence of CCR2+ monocyte-derived long-lived BAMs in a brain compression model and in a sepsis model after the initial disruption of homeostasis. Our study reveals that the short-lived CCR2+ monocytes transform into long-lived BAM-like cells at the CNS border and subsequently contribute to BAM populations.
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Affiliation(s)
- Lingxiao Wang
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA; Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Jiaying Zheng
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA; Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Shunyi Zhao
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA; Mayo Clinic Graduate School of Biomedical Sciences, Rochester, MN 55905, USA
| | - Yushan Wan
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Meijie Wang
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN 55905, USA
| | - Dale B Bosco
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA
| | - Chia-Yi Kuan
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Jason R Richardson
- Department of Environmental Health Science, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL 33199, USA
| | - Long-Jun Wu
- Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA; Department of Neuroscience, Mayo Clinic, Jacksonville, FL 32224, USA; Center for Neuroimmunology and Glial Biology, Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA.
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11
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Fine HA. Glioblastoma: Not Just Another Cancer. Cancer Discov 2024; 14:648-652. [PMID: 38571415 DOI: 10.1158/2159-8290.cd-23-1498] [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: 04/05/2024]
Abstract
SUMMARY This commentary urges a paradigm shift in how we approach research and drug development for glioblastoma, reimagining it as an aberrant brain-like organ, distinct from other cancers, to inspire innovative treatment strategies and interdisciplinary collaboration, addressing the minimal progress in extending glioblastoma patient survival despite years of research and investment.
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Affiliation(s)
- Howard A Fine
- Department of Neurology, Meyer Cancer Center, Weill Cornell Medicine, New York, New York
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12
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Kallal N, Hugues S, Garnier L. Regulation of autoimmune-mediated neuroinflammation by endothelial cells. Eur J Immunol 2024; 54:e2350482. [PMID: 38335316 DOI: 10.1002/eji.202350482] [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: 07/14/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
The CNS has traditionally been considered an immune-privileged organ, but recent studies have identified a plethora of immune cells in the choroid plexus, meninges, perivascular spaces, and cribriform plate. Although those immune cells are crucial for the maintenance of CNS homeostasis and for neural protection against infections, they can lead to neuroinflammation in some circumstances. The blood and the lymphatic vasculatures exhibit distinct structural and molecular features depending on their location in the CNS, greatly influencing the compartmentalization and the nature of CNS immune responses. In this review, we discuss how endothelial cells regulate the migration and the functions of T cells in the CNS both at steady-state and in murine models of neuroinflammation, with a special focus on the anatomical, cellular, and molecular mechanisms implicated in EAE.
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Affiliation(s)
- Neil Kallal
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
| | - Stephanie Hugues
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
| | - Laure Garnier
- Department of Pathology and Immunology, Geneva Medical School, Geneva, Switzerland
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13
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Zhang SS, Li RQ, Chen Z, Wang XY, Dumont AS, Fan X. Immune cells: potential carriers or agents for drug delivery to the central nervous system. Mil Med Res 2024; 11:19. [PMID: 38549161 PMCID: PMC10979586 DOI: 10.1186/s40779-024-00521-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 03/05/2024] [Indexed: 04/01/2024] Open
Abstract
Drug delivery systems (DDS) have recently emerged as a promising approach for the unique advantages of drug protection and targeted delivery. However, the access of nanoparticles/drugs to the central nervous system (CNS) remains a challenge mainly due to the obstruction from brain barriers. Immune cells infiltrating the CNS in the pathological state have inspired the development of strategies for CNS foundation drug delivery. Herein, we outline the three major brain barriers in the CNS and the mechanisms by which immune cells migrate across the blood-brain barrier. We subsequently review biomimetic strategies utilizing immune cell-based nanoparticles for the delivery of nanoparticles/drugs to the CNS, as well as recent progress in rationally engineering immune cell-based DDS for CNS diseases. Finally, we discuss the challenges and opportunities of immune cell-based DDS in CNS diseases to promote their clinical development.
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Affiliation(s)
- Shan-Shan Zhang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Ruo-Qi Li
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Zhong Chen
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China
| | - Xiao-Ying Wang
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, 70122, USA
| | - Aaron S Dumont
- Clinical Neuroscience Research Center, Department of Neurosurgery and Neurology, Tulane University School of Medicine, New Orleans, LA, 70122, USA.
| | - Xiang Fan
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China.
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, Zhejiang Chinese Medical University, Hangzhou, 310053, Zhejiang, China.
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14
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Sun R, Jiang H. Border-associated macrophages in the central nervous system. J Neuroinflammation 2024; 21:67. [PMID: 38481312 PMCID: PMC10938757 DOI: 10.1186/s12974-024-03059-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/05/2024] [Indexed: 03/17/2024] Open
Abstract
Tissue-resident macrophages play an important role in the local maintenance of homeostasis and immune surveillance. In the central nervous system (CNS), brain macrophages are anatomically divided into parenchymal microglia and non-parenchymal border-associated macrophages (BAMs). Among these immune cell populations, microglia have been well-studied for their roles during development as well as in health and disease. BAMs, mostly located in the choroid plexus, meningeal and perivascular spaces, are now gaining increased attention due to advancements in multi-omics technologies and genetic methodologies. Research on BAMs over the past decade has focused on their ontogeny, immunophenotypes, involvement in various CNS diseases, and potential as therapeutic targets. Unlike microglia, BAMs display mixed origins and distinct self-renewal capacity. BAMs are believed to regulate neuroimmune responses associated with brain barriers and contribute to immune-mediated neuropathology. Notably, BAMs have been observed to function in diverse cerebral pathologies, including Alzheimer's disease, Parkinson's disease, multiple sclerosis, ischemic stroke, and gliomas. The elucidation of the heterogeneity and diverse functions of BAMs during homeostasis and neuroinflammation is mesmerizing, since it may shed light on the precision medicine that emphasizes deep insights into programming cues in the unique brain immune microenvironment. In this review, we delve into the latest findings on BAMs, covering aspects like their origins, self-renewal capacity, adaptability, and implications in different brain disorders.
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Affiliation(s)
- Rui Sun
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, 660 S. Euclid Ave., Box 8057, St. Louis, MO, 63110, USA.
| | - Haowu Jiang
- Department of Anesthesiology, Washington University Pain Center, Washington University School of Medicine in St. Louis, 660 S. Euclid Ave., CB 8054, St. Louis, MO, 63110, USA.
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15
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Smyth LCD, Xu D, Okar SV, Dykstra T, Rustenhoven J, Papadopoulos Z, Bhasiin K, Kim MW, Drieu A, Mamuladze T, Blackburn S, Gu X, Gaitán MI, Nair G, Storck SE, Du S, White MA, Bayguinov P, Smirnov I, Dikranian K, Reich DS, Kipnis J. Identification of direct connections between the dura and the brain. Nature 2024; 627:165-173. [PMID: 38326613 PMCID: PMC11254388 DOI: 10.1038/s41586-023-06993-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 12/18/2023] [Indexed: 02/09/2024]
Abstract
The arachnoid barrier delineates the border between the central nervous system and dura mater. Although the arachnoid barrier creates a partition, communication between the central nervous system and the dura mater is crucial for waste clearance and immune surveillance1,2. How the arachnoid barrier balances separation and communication is poorly understood. Here, using transcriptomic data, we developed transgenic mice to examine specific anatomical structures that function as routes across the arachnoid barrier. Bridging veins create discontinuities where they cross the arachnoid barrier, forming structures that we termed arachnoid cuff exit (ACE) points. The openings that ACE points create allow the exchange of fluids and molecules between the subarachnoid space and the dura, enabling the drainage of cerebrospinal fluid and limited entry of molecules from the dura to the subarachnoid space. In healthy human volunteers, magnetic resonance imaging tracers transit along bridging veins in a similar manner to access the subarachnoid space. Notably, in neuroinflammatory conditions such as experimental autoimmune encephalomyelitis, ACE points also enable cellular trafficking, representing a route for immune cells to directly enter the subarachnoid space from the dura mater. Collectively, our results indicate that ACE points are a critical part of the anatomy of neuroimmune communication in both mice and humans that link the central nervous system with the dura and its immunological diversity and waste clearance systems.
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Affiliation(s)
- Leon C D Smyth
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA.
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA.
| | - Di Xu
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Serhat V Okar
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Taitea Dykstra
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Justin Rustenhoven
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Department of Pharmacology and Clinical Pharmacology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Centre for Brain Research, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Zachary Papadopoulos
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Neuroscience Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Kesshni Bhasiin
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Min Woo Kim
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Immunology Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Antoine Drieu
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Tornike Mamuladze
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Immunology Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Susan Blackburn
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Xingxing Gu
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - María I Gaitán
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Govind Nair
- Quantitative MRI Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Steffen E Storck
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Siling Du
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Immunology Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Michael A White
- Department of Genetics, Washington University School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Peter Bayguinov
- Washington University Center for Cellular Imaging, Washington University School of Medicine, Washington University in St Louis, St Louis, MO, USA
- Department of Neuroscience, Washington University School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Igor Smirnov
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Krikor Dikranian
- Department of Neuroscience, Washington University School of Medicine, Washington University in St Louis, St Louis, MO, USA
| | - Daniel S Reich
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Jonathan Kipnis
- Brain Immunology and Glia (BIG) Center, Washington University in St Louis, St Louis, MO, USA.
- Department of Pathology and Immunology, School of Medicine, Washington University in St Louis, St Louis, MO, USA.
- Neuroscience Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA.
- Immunology Graduate Program, School of Medicine, Washington University in St Louis, St Louis, MO, USA.
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16
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Feng Y, Castro E, Wei Y, Jin T, Qiu X, Dominici F, Schwartz J. Long-term exposure to ambient PM2.5, particulate constituents and hospital admissions from non-respiratory infection. Nat Commun 2024; 15:1518. [PMID: 38374182 PMCID: PMC10876532 DOI: 10.1038/s41467-024-45776-0] [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: 04/21/2023] [Accepted: 02/05/2024] [Indexed: 02/21/2024] Open
Abstract
The association between PM2.5 and non-respiratory infections is unclear. Using data from Medicare beneficiaries and high-resolution datasets of PM2.5 and its constituents across 39,296 ZIP codes in the U.S between 2000 and 2016, we investigated the associations between annual PM2.5, PM2.5 constituents, source-specific PM2.5, and hospital admissions from non-respiratory infections. Each standard deviation (3.7-μg m-3) increase in PM2.5 was associated with a 10.8% (95%CI 10.8-11.2%) increase in rate of hospital admissions from non-respiratory infections. Sulfates (30.8%), Nickel (22.5%) and Copper (15.3%) contributed the largest weights in the observed associations. Each standard deviation increase in PM2.5 components sourced from oil combustion, coal burning, traffic, dirt, and regionally transported nitrates was associated with 14.5% (95%CI 7.6-21.8%), 18.2% (95%CI 7.2-30.2%), 20.6% (95%CI 5.6-37.9%), 8.9% (95%CI 0.3-18.4%) and 7.8% (95%CI 0.6-15.5%) increases in hospital admissions from non-respiratory infections. Our results suggested that non-respiratory infections are an under-appreciated health effect of PM2.5.
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Affiliation(s)
- Yijing Feng
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Edgar Castro
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Yaguang Wei
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Tingfan Jin
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Xinye Qiu
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Francesca Dominici
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Joel Schwartz
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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17
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Guo J, Yang T, Zhang W, Yu K, Xu X, Li W, Song L, Gu X, Cao R, Cui S. Inhibition of CD44 suppresses the formation of fibrotic scar after spinal cord injury via the JAK2/STAT3 signaling pathway. iScience 2024; 27:108935. [PMID: 38323002 PMCID: PMC10846335 DOI: 10.1016/j.isci.2024.108935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/17/2023] [Accepted: 01/12/2024] [Indexed: 02/08/2024] Open
Abstract
Fibrotic scar is one of the main impediments to axon regeneration following spinal cord injury (SCI). In this study, we found that CD44 was upregulated during the formation of fibrotic scar, and blocking CD44 by IM7 caused downregulation of fibrosis-related extracellular matrix proteins at both 2 and 12 weeks post-spinal cord injury. More Biotinylated dextran amine (BDA)-traced corticospinal tract axons crossed the scar area and extended into the distal region after IM7 administration. A recovery of motor and sensory function was observed based on Basso Mouse Scale (BMS) scores and tail-flick test. In vitro experiments revealed that inhibiting CD44 and JAK2/STAT3 signaling pathway decreased the proliferation, differentiation, and migration of fibroblasts induced by the inflammatory supernatant. Collectively, these findings highlight the critical role of CD44 and its downstream JAK2/STAT3 signaling pathway in fibrotic scar formation, suggesting a potential therapeutic target for SCI.
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Affiliation(s)
- Jin Guo
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Tuo Yang
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Weizhong Zhang
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Kaiming Yu
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Xiong Xu
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Weizhen Li
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Lili Song
- Department of Hand & Microsurgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Xiaosong Gu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu 226001, China
| | - Rangjuan Cao
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
| | - Shusen Cui
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, Changchun, Jilin Province 130033, China
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18
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Klip A, De Bock K, Bilan PJ, Richter EA. Transcellular Barriers to Glucose Delivery in the Body. Annu Rev Physiol 2024; 86:149-173. [PMID: 38345907 DOI: 10.1146/annurev-physiol-042022-031657] [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] [Indexed: 02/15/2024]
Abstract
Glucose is the universal fuel of most mammalian cells, and it is largely replenished through dietary intake. Glucose availability to tissues is paramount for the maintenance of homeostatic energetics and, hence, supply should match demand by the consuming organs. In its journey through the body, glucose encounters cellular barriers for transit at the levels of the absorbing intestinal epithelial wall, the renal epithelium mediating glucose reabsorption, and the tight capillary endothelia (especially in the brain). Glucose transiting through these cellular barriers must escape degradation to ensure optimal glucose delivery to the bloodstream or tissues. The liver, which stores glycogen and generates glucose de novo, must similarly be able to release it intact to the circulation. We present the most up-to-date knowledge on glucose handling by the gut, liver, brain endothelium, and kidney, and discuss underlying molecular mechanisms and open questions. Diseases associated with defects in glucose delivery and homeostasis are also briefly addressed. We propose that the universal problem of sparing glucose from catabolism in favor of translocation across the barriers posed by epithelia and endothelia is resolved through common mechanisms involving glucose transfer to the endoplasmic reticulum, from where glucose exits the cells via unconventional cellular mechanisms.
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Affiliation(s)
- Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Katrien De Bock
- Laboratory of Exercise and Health, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada;
| | - Erik A Richter
- The August Krogh Section for Molecular Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Copenhagen, Denmark
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19
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Min H, O’Neil SM, Xu L, Moseman EA, Kurtzberg J, Filiano AJ. Mural cells interact with macrophages in the dura mater to regulate CNS immune surveillance. J Exp Med 2024; 221:e20230326. [PMID: 38193859 PMCID: PMC10783178 DOI: 10.1084/jem.20230326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 09/07/2023] [Accepted: 12/13/2023] [Indexed: 01/10/2024] Open
Abstract
The central nervous system (CNS) tightly regulates access of circulating immune cells. Immunosurveillance is therefore managed in the meninges at the borders of the CNS. Here, we demonstrated that mural cells, which include pericytes and smooth muscle cells, decreased coverage around blood vessels in the dura, the outermost layer of the meninges, and upregulated gene pathways involved in leukocyte migration in presymptomatic experimental autoimmune encephalomyelitis (EAE). Partially depleting mural cells promoted the trafficking of CNS antigen-specific T cells to the dura in a process that depended on resident antigen-presenting cells, thereby increasing susceptibility to passive EAE. Mechanistically, mural cells physically contacted macrophages in the dura and transferred cytoplasmic components, including processing bodies (RNA granules shown to reprogram transcriptomes), which were critical to suppress antigen-dependent T helper (TH) cell activation and TH17 differentiation. Our study revealed a mechanism by which mural cell-macrophage interactions regulate the trafficking of CNS antigen-specific T cells to the dura.
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Affiliation(s)
- Hyunjung Min
- Marcus Center for Cellular Cures, Duke University School of Medicine, Durham, NC, USA
- Department of Neurosurgery, Duke University School of Medicine, Durham, NC, USA
| | - Shane M. O’Neil
- Marcus Center for Cellular Cures, Duke University School of Medicine, Durham, NC, USA
| | - Li Xu
- Marcus Center for Cellular Cures, Duke University School of Medicine, Durham, NC, USA
| | - E. Ashley Moseman
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
| | - Joanne Kurtzberg
- Marcus Center for Cellular Cures, Duke University School of Medicine, Durham, NC, USA
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Anthony J. Filiano
- Marcus Center for Cellular Cures, Duke University School of Medicine, Durham, NC, USA
- Department of Neurosurgery, Duke University School of Medicine, Durham, NC, USA
- Department of Integrative Immunobiology, Duke University School of Medicine, Durham, NC, USA
- Department of Pathology, Duke University School of Medicine, Durham, NC, USA
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20
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Sun R, Jiang H. Border-associated macrophages in the central nervous system. Clin Immunol 2024:109921. [PMID: 38316202 DOI: 10.1016/j.clim.2024.109921] [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: 12/13/2023] [Accepted: 01/31/2024] [Indexed: 02/07/2024]
Abstract
Tissue-resident macrophages play an important role in the local maintenance of homeostasis and immune surveillance. In the central nervous system (CNS), brain macrophages are anatomically divided into parenchymal microglia and non-parenchymal border-associated macrophages (BAMs). Among these immune cell populations, microglia have been well-studied for their roles in normal brain development, neurodegeneration, and brain cancers. BAMs, mostly located in the choroid plexus, meningeal and perivascular spaces, are now gaining increased attention due to advancements in multi-omics technologies and genetic methodologies. Research on BAMs over the past decade has focused on their ontogeny, immunophenotypes, involvement in various CNS diseases, and potential as therapeutic targets. Unlike microglia, BAMs display mixed origins and distinct self-renewal capacity. BAMs are believed to regulate neuroimmune responses associated with brain barriers and contribute to immune-mediated neuropathology. Notably, BAMs have been observed to function in diverse cerebral pathologies, including Alzheimer's disease, Parkinson's disease, multiple sclerosis, ischemic stroke, and gliomas. The elucidation of the heterogeneity and diverse functions of BAMs during homeostasis and neuroinflammation is mesmerizing, since it may shed light on the precision medicine that emphasizes deep insights into programming cues in the unique brain immune microenvironment. In this review, we delve into the latest findings on BAMs, covering aspects like their origins, self-renewal capacity, adaptability, and implications in different brain disorders.
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Affiliation(s)
- Rui Sun
- Department of Neurological Surgery, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA.
| | - Haowu Jiang
- Washington University Pain Center, Department of Anesthesiology, Washington University School of Medicine in St Louis, St. Louis, MO 63110, USA.
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21
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Kovacs MA, Babcock IW, Royo Marco A, Sibley LA, Kelly AG, Harris TH. Vascular Endothelial Growth Factor-C Treatment Enhances Cerebrospinal Fluid Outflow during Toxoplasma gondii Brain Infection but Does Not Improve Cerebral Edema. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:225-237. [PMID: 38065361 PMCID: PMC10835445 DOI: 10.1016/j.ajpath.2023.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 10/02/2023] [Accepted: 11/06/2023] [Indexed: 01/22/2024]
Abstract
Cerebral edema frequently develops in the setting of brain infection and can contribute to elevated intracranial pressure, a medical emergency. How excess fluid is cleared from the brain is not well understood. Previous studies have shown that interstitial fluid is transported out of the brain along perivascular channels that collect into the cerebrospinal fluid (CSF)-filled subarachnoid space. CSF is then removed from the central nervous system through venous and lymphatic routes. The current study tested the hypothesis that increasing lymphatic drainage of CSF would promote clearance of cerebral edema fluid during infection with the neurotropic parasite Toxoplasma gondii. Fluorescent microscopy and magnetic resonance imaging was used to show that C57BL/6 mice develop vasogenic edema 4 to 5 weeks after infection with T. gondii. Tracer experiments were used to evaluate how brain infection affects meningeal lymphatic function, which demonstrated a decreased rate in CSF outflow in T. gondii-infected mice. Next, mice were treated with a vascular endothelial growth factor (VEGF)-C-expressing viral vector, which induced meningeal lymphangiogenesis and improved CSF outflow in chronically infected mice. No difference in cerebral edema was observed between mice that received VEGF-C and those that rececived sham treatment. Therefore, although VEGF-C treatment can improve lymphatic outflow in mice infected with T. gondii, this effect does not lead to increased clearance of edema fluid from the brains of these mice.
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Affiliation(s)
- Michael A Kovacs
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Isaac W Babcock
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Ana Royo Marco
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Lydia A Sibley
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Abigail G Kelly
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia
| | - Tajie H Harris
- Center for Brain Immunology and Glia, Department of Neuroscience, University of Virginia, Charlottesville, Virginia.
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22
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Okar SV, Fagiani F, Absinta M, Reich DS. Imaging of brain barrier inflammation and brain fluid drainage in human neurological diseases. Cell Mol Life Sci 2024; 81:31. [PMID: 38212566 PMCID: PMC10838199 DOI: 10.1007/s00018-023-05073-3] [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: 08/20/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 01/13/2024]
Abstract
The intricate relationship between the central nervous system (CNS) and the immune system plays a crucial role in the pathogenesis of various neurological diseases. Understanding the interactions among the immunopathological processes at the brain borders is essential for advancing our knowledge of disease mechanisms and developing novel diagnostic and therapeutic approaches. In this review, we explore the emerging role of neuroimaging in providing valuable insights into brain barrier inflammation and brain fluid drainage in human neurological diseases. Neuroimaging techniques have enabled us not only to visualize and assess brain structures, but also to study the dynamics of the CNS in health and disease in vivo. By analyzing imaging findings, we can gain a deeper understanding of the immunopathology observed at the brain-immune interface barriers, which serve as critical gatekeepers that regulate immune cell trafficking, cytokine release, and clearance of waste products from the brain. This review explores the integration of neuroimaging data with immunopathological findings, providing valuable insights into brain barrier integrity and immune responses in neurological diseases. Such integration may lead to the development of novel diagnostic markers and targeted therapeutic approaches that can benefit patients with neurological disorders.
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Affiliation(s)
- Serhat V Okar
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Francesca Fagiani
- Translational Neuropathology Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy
| | - Martina Absinta
- Translational Neuropathology Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, 20132, Milan, Italy.
- Division of Neuroscience, Vita-Salute San Raffaele University, 20132, Milan, Italy.
| | - Daniel S Reich
- Translational Neuroradiology Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, 20892, USA.
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23
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Aspden JW, Murphy MA, Kashlan RD, Xiong Y, Poznansky MC, Sîrbulescu RF. Intruders or protectors - the multifaceted role of B cells in CNS disorders. Front Cell Neurosci 2024; 17:1329823. [PMID: 38269112 PMCID: PMC10806081 DOI: 10.3389/fncel.2023.1329823] [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: 10/29/2023] [Accepted: 12/20/2023] [Indexed: 01/26/2024] Open
Abstract
B lymphocytes are immune cells studied predominantly in the context of peripheral humoral immune responses against pathogens. Evidence has been accumulating in recent years on the diversity of immunomodulatory functions that B cells undertake, with particular relevance for pathologies of the central nervous system (CNS). This review summarizes current knowledge on B cell populations, localization, infiltration mechanisms, and function in the CNS and associated tissues. Acute and chronic neurodegenerative pathologies are examined in order to explore the complex, and sometimes conflicting, effects that B cells can have in each context, with implications for disease progression and treatment outcomes. Additional factors such as aging modulate the proportions and function of B cell subpopulations over time and are also discussed in the context of neuroinflammatory response and disease susceptibility. A better understanding of the multifactorial role of B cell populations in the CNS may ultimately lead to innovative therapeutic strategies for a variety of neurological conditions.
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Affiliation(s)
- James W. Aspden
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Matthew A. Murphy
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Rommi D. Kashlan
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Yueyue Xiong
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Mark C. Poznansky
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Ruxandra F. Sîrbulescu
- Vaccine and Immunotherapy Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
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24
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Frumer GR, Shin SH, Jung S, Kim JS. Not just Glia-Dissecting brain macrophages in the mouse. Glia 2024; 72:5-18. [PMID: 37501579 DOI: 10.1002/glia.24445] [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: 04/06/2023] [Revised: 07/05/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
Macrophages have emerged as critical cellular components of the central nervous system (CNS), promoting development, maintenance, and immune defense of the CNS. Here we will review recent advances in our understanding of brain macrophage heterogeneity, including microglia and border-associated macrophages, focusing on the mouse. Emphasis will be given to the discussion of strengths and limitations of the experimental approaches that have led to the recent insights and hold promise to further deepen our mechanistic understanding of brain macrophages that might eventually allow to harness their activities for the management of CNS pathologies.
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Affiliation(s)
- Gal Ronit Frumer
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Sun-Hye Shin
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Steffen Jung
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Jung-Seok Kim
- Department of Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
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25
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Sun W, Ye B, Chen S, Zeng L, Lu H, Wan Y, Gao Q, Chen K, Qu Y, Wu B, Lv X, Guo X. Neuro-bone tissue engineering: emerging mechanisms, potential strategies, and current challenges. Bone Res 2023; 11:65. [PMID: 38123549 PMCID: PMC10733346 DOI: 10.1038/s41413-023-00302-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/08/2023] [Accepted: 10/31/2023] [Indexed: 12/23/2023] Open
Abstract
The skeleton is a highly innervated organ in which nerve fibers interact with various skeletal cells. Peripheral nerve endings release neurogenic factors and sense skeletal signals, which mediate bone metabolism and skeletal pain. In recent years, bone tissue engineering has increasingly focused on the effects of the nervous system on bone regeneration. Simultaneous regeneration of bone and nerves through the use of materials or by the enhancement of endogenous neurogenic repair signals has been proven to promote functional bone regeneration. Additionally, emerging information on the mechanisms of skeletal interoception and the central nervous system regulation of bone homeostasis provide an opportunity for advancing biomaterials. However, comprehensive reviews of this topic are lacking. Therefore, this review provides an overview of the relationship between nerves and bone regeneration, focusing on tissue engineering applications. We discuss novel regulatory mechanisms and explore innovative approaches based on nerve-bone interactions for bone regeneration. Finally, the challenges and future prospects of this field are briefly discussed.
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Affiliation(s)
- Wenzhe Sun
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Bing Ye
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Siyue Chen
- School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Lian Zeng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Hongwei Lu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yizhou Wan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Qing Gao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Kaifang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Yanzhen Qu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Bin Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Xiao Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
| | - Xiaodong Guo
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China.
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26
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Schellhammer L, Beffinger M, Salazar U, Laman JD, Buch T, vom Berg J. Exit pathways of therapeutic antibodies from the brain and retention strategies. iScience 2023; 26:108132. [PMID: 37915602 PMCID: PMC10616392 DOI: 10.1016/j.isci.2023.108132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
Treating brain diseases requires therapeutics to pass the blood-brain barrier (BBB) which is nearly impermeable for large biologics such as antibodies. Several methods now facilitate crossing or circumventing the BBB for antibody therapeutics. Some of these exploit receptor-mediated transcytosis, others use direct delivery bypassing the BBB. However, successful delivery into the brain does not preclude exit back to the systemic circulation. Various mechanisms are implicated in the active and passive export of antibodies from the central nervous system. Here we review findings on active export via transcytosis of therapeutic antibodies - in particular, the role of the neonatal Fc receptor (FcRn) - and discuss a possible contribution of passive efflux pathways such as lymphatic and perivascular drainage. We point out open questions and how to address these experimentally. In addition, we suggest how emerging findings could aid the design of the next generation of therapeutic antibodies for neurologic diseases.
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Affiliation(s)
- Linda Schellhammer
- Institute of Laboratory Animal Science, University of Zurich, 8952 Schlieren, Switzerland
| | - Michal Beffinger
- Institute of Laboratory Animal Science, University of Zurich, 8952 Schlieren, Switzerland
- InCephalo AG, 4123 Allschwil, Switzerland
| | - Ulisse Salazar
- Institute of Laboratory Animal Science, University of Zurich, 8952 Schlieren, Switzerland
| | - Jon D. Laman
- Department of Pathology & Medical Biology, University of Groningen, University Medical Center Groningen, Groningen 9713, the Netherlands
| | - Thorsten Buch
- Institute of Laboratory Animal Science, University of Zurich, 8952 Schlieren, Switzerland
| | - Johannes vom Berg
- Institute of Laboratory Animal Science, University of Zurich, 8952 Schlieren, Switzerland
- InCephalo AG, 4123 Allschwil, Switzerland
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27
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Kearns NA, Iatrou A, Flood DJ, De Tissera S, Mullaney ZM, Xu J, Gaiteri C, Bennett DA, Wang Y. Dissecting the human leptomeninges at single-cell resolution. Nat Commun 2023; 14:7036. [PMID: 37923721 PMCID: PMC10624900 DOI: 10.1038/s41467-023-42825-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 10/23/2023] [Indexed: 11/06/2023] Open
Abstract
Emerging evidence shows that the meninges conduct essential immune surveillance and immune defense at the brain border, and the dysfunction of meningeal immunity contributes to aging and neurodegeneration. However, no study exists on the molecular properties of cell types within human leptomeninges. Here, we provide single nuclei profiling of dissected postmortem leptomeninges from aged individuals. We detect diverse cell types, including unique meningeal endothelial, mural, and fibroblast subtypes. For immune cells, we show that most T cells express CD8 and bear characteristics of tissue-resident memory T cells. We also identify distinct subtypes of border-associated macrophages (BAMs) that display differential gene expressions from microglia and express risk genes for Alzheimer's Disease (AD), as nominated by genome-wide association studies (GWAS). We discover cell-type-specific differentially expressed genes in individuals with Alzheimer's dementia, particularly in fibroblasts and BAMs. Indeed, when cultured, leptomeningeal cells display the signature of ex vivo AD fibroblasts upon amyloid-β treatment. We further explore ligand-receptor interactions within the leptomeningeal niche and computationally infer intercellular communications in AD. Thus, our study establishes a molecular map of human leptomeningeal cell types, providing significant insight into the border immune and fibrotic responses in AD.
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Affiliation(s)
- Nicola A Kearns
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Artemis Iatrou
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA, 02478, USA
| | - Daniel J Flood
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Sashini De Tissera
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Zachary M Mullaney
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Jishu Xu
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Chris Gaiteri
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
- Department of Psychiatry, Upstate Medical University, Syracuse, NY, 13210, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Yanling Wang
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, 60612, USA.
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, 60612, USA.
- Rush Graduate College, Rush University, Chicago IL, 60612, USA.
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28
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Kwon W, Yoo C, Kim JH, Kim T, Kim A, Hwang M, Choi H. Role of human dural fibroblasts in the angiogenic responses of human endothelial cells: An in vitro dural model and the application of lab-on-a-chip for EDAS. Bioeng Transl Med 2023; 8:e10589. [PMID: 38023706 PMCID: PMC10658529 DOI: 10.1002/btm2.10589] [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: 05/19/2023] [Revised: 07/18/2023] [Accepted: 08/01/2023] [Indexed: 12/01/2023] Open
Abstract
Encephaloduroarteriosynangiosis (EDAS), an indirect anastomosis procedure, is widely accepted as a primary treatment for moyamoya disease (MMD) to improve collateral blood flow. During surgical intervention, dural fibroblasts (DuF) are thought to produce various proteins that create an angiogenic microenvironment. However, the biophysiological evidence supporting the angiogenic properties of this surgical technique has not been thoroughly elucidated. The purpose of these studies was to determine whether DuF releases pro-angiogenic factors and chemokines and promotes angiogenic properties in human endothelial cells (ECs) under IL-1β-mediated wound conditions, which are expected to occur during the process of neo-vascularization within the dura mater. Furthermore, a microfluidic chemotaxis platform was implemented to investigate the angiogenic activity of ECs in response to a reconstituted dura model. Transcriptome sequencing revealed that IL-1β stimulation on DuF induced a significant upregulation of various pro-angiogenic genes, including IL-6, IL-8, CCL-2, CCL-5, SMOC-1, and SCG-2 (p < 0.05). Moreover, compared to ECs cultured in naïve media or naïve DuF media, those exposed to IL-1β-DuF conditioned media expressed higher mRNA and protein levels of these pro-angiogenic factors (p < 0.001). ECs co-cultured with IL-1β-DuF also exhibited considerable migration on the microfluidic chemotaxis platform. Furthermore, the chemotactic effects on the ECs were reduced upon neutralization of IL-8 or inhibition of NF-κB signaling. Our findings demonstrate that IL-1β-DuFs release factors that activate and enhance the angiogenic properties of ECs. These results suggest a potential interaction between DuF and ECs following EDAS for MMD, and these components could be targeted for the development of therapeutic biomarkers.
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Affiliation(s)
- Woo‐Keun Kwon
- Department of Neurosurgery, Korea University Guro HospitalKorea University College of MedicineSeoulSouth Korea
| | - Chang‐Min Yoo
- Department of Medical Sciences, Graduate School of MedicineKorea UniversitySeoulSouth Korea
| | - Jang Hun Kim
- Department of Neurosurgery, Korea University Anam HospitalKorea University College of MedicineSeoulSouth Korea
| | - Tae‐Won Kim
- Department of Medical Sciences, Graduate School of MedicineKorea UniversitySeoulSouth Korea
| | - An‐Gi Kim
- Department of Medical Sciences, Graduate School of MedicineKorea UniversitySeoulSouth Korea
| | - Min‐Ho Hwang
- Department of Medical Sciences, Graduate School of MedicineKorea UniversitySeoulSouth Korea
| | - Hyuk Choi
- Department of Medical Sciences, Graduate School of MedicineKorea UniversitySeoulSouth Korea
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29
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Ricciardelli AR, Robledo A, Fish JE, Kan PT, Harris TH, Wythe JD. The Role and Therapeutic Implications of Inflammation in the Pathogenesis of Brain Arteriovenous Malformations. Biomedicines 2023; 11:2876. [PMID: 38001877 PMCID: PMC10669898 DOI: 10.3390/biomedicines11112876] [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: 08/29/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 11/26/2023] Open
Abstract
Brain arteriovenous malformations (bAVMs) are focal vascular lesions composed of abnormal vascular channels without an intervening capillary network. As a result, high-pressure arterial blood shunts directly into the venous outflow system. These high-flow, low-resistance shunts are composed of dilated, tortuous, and fragile vessels, which are prone to rupture. BAVMs are a leading cause of hemorrhagic stroke in children and young adults. Current treatments for bAVMs are limited to surgery, embolization, and radiosurgery, although even these options are not viable for ~20% of AVM patients due to excessive risk. Critically, inflammation has been suggested to contribute to lesion progression. Here we summarize the current literature discussing the role of the immune system in bAVM pathogenesis and lesion progression, as well as the potential for targeting inflammation to prevent bAVM rupture and intracranial hemorrhage. We conclude by proposing that a dysfunctional endothelium, which harbors the somatic mutations that have been shown to give rise to sporadic bAVMs, may drive disease development and progression by altering the immune status of the brain.
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Affiliation(s)
- Ashley R. Ricciardelli
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ariadna Robledo
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX 77555, USA; (A.R.)
| | - Jason E. Fish
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada;
- Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON M5G 2N2, Canada
| | - Peter T. Kan
- Department of Neurosurgery, University of Texas Medical Branch, Galveston, TX 77555, USA; (A.R.)
| | - Tajie H. Harris
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA;
- Brain, Immunology, and Glia (BIG) Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
| | - Joshua D. Wythe
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Integrative Physiology, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neurosurgery, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA 22903, USA;
- Brain, Immunology, and Glia (BIG) Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22903, USA
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30
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Cassiano LMG, Oliveira MDS, de Queiroz KB, Amancio AMTDS, Salim ACDM, Fernandes GDR, Carneiro CM, Coimbra RS. Uncovering the neuroprotective effect of vitamin B12 in pneumococcal meningitis: insights into its pleiotropic mode of action at the transcriptional level. Front Immunol 2023; 14:1250055. [PMID: 37854591 PMCID: PMC10579599 DOI: 10.3389/fimmu.2023.1250055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 09/22/2023] [Indexed: 10/20/2023] Open
Abstract
Background The interplay between bacterial virulence factors and the host innate immune response in pneumococcal meningitis (PM) can result in uncontrolled neuroinflammation, which is known to induce apoptotic death of progenitor cells and post-mitotic neurons in the hippocampal dentate gyrus, resulting in cognitive impairment. Vitamin B12 attenuates hippocampal damage and reduces the expression of some key inflammatory genes in PM, by acting as an epidrug that promotes DNA methylation, with increased production of S-adenosyl-methionine, the universal donor of methyl. Material and methods Eleven-day-old rats were infected with S. pneumoniae via intracisternal injection and then administered either vitamin B12 or a placebo. After 24 hours of infection, the animals were euthanized, and apoptosis in the hippocampal dentate gyrus, microglia activation, and the inflammatory infiltrate were quantified in one brain hemisphere. The other hemisphere was used for RNA-Seq and RT-qPCR analysis. Results In this study, adjuvant therapy with B12 was found to modulate the hippocampal transcriptional signature induced by PM in infant rats, mitigating the effects of the disease in canonical pathways related to the recognition of pathogens by immune cells, signaling via NF-kB, production of pro-inflammatory cytokines, migration of peripheral leukocytes into the central nervous system, and production of reactive species. Phenotypic analysis revealed that B12 effectively inhibited microglia activation in the hippocampus and reduced the inflammatory infiltrate in the central nervous system of the infected animals. These pleiotropic transcriptional effects of B12 that lead to neuroprotection are partly regulated by alterations in histone methylation markings. No adverse effects of B12 were predicted or observed, reinforcing the well-established safety profile of this epidrug. Conclusion B12 effectively mitigates the impact of PM on pivotal neuroinflammatory pathways. This leads to reduced microglia activation and inflammatory infiltrate within the central nervous system, resulting in the attenuation of hippocampal damage. The anti-inflammatory and neuroprotective effects of B12 involve the modulation of histone markings in hippocampal neural cells.
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Affiliation(s)
- Larissa Marcely Gomes Cassiano
- Neurogenômica, Imunopatologia, Instituto René Rachou (IRR), Fiocruz, Belo Horizonte, MG, Brazil
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | | | - Anna Christina de Matos Salim
- Plataforma Tecnológica de Sequenciamento NGS (Next Generation Sequencing), Instituto René Rachou (IRR), Fiocruz, Belo Horizonte, MG, Brazil
| | - Gabriel da Rocha Fernandes
- Plataforma Tecnológica de Bioinformática, Instituto René Rachou (IRR), Fiocruz, Belo Horizonte, MG, Brazil
| | - Cláudia Martins Carneiro
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Roney Santos Coimbra
- Neurogenômica, Imunopatologia, Instituto René Rachou (IRR), Fiocruz, Belo Horizonte, MG, Brazil
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31
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Xu HK, Liu JX, Zheng CX, Liu L, Ma C, Tian JY, Yuan Y, Cao Y, Xing SJ, Liu SY, Li Q, Zhao YJ, Kong L, Chen YJ, Sui BD. Region-specific sympatho-adrenergic regulation of specialized vasculature in bone homeostasis and regeneration. iScience 2023; 26:107455. [PMID: 37680481 PMCID: PMC10481296 DOI: 10.1016/j.isci.2023.107455] [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: 03/15/2023] [Revised: 06/13/2023] [Accepted: 07/19/2023] [Indexed: 09/09/2023] Open
Abstract
Type H vessels couple angiogenesis with osteogenesis, while sympathetic cues regulate vascular and skeletal function. The crosstalk between sympathetic nerves and type H vessels in bone remains unclear. Here, we first identify close spatial connections between sympathetic nerves and type H vessels in bone, particularly in metaphysis. Sympathoexcitation, mimicked by isoproterenol (ISO) injection, reduces type H vessels and bone mass. Conversely, beta-2-adrenergic receptor (ADRB2) deficiency maintains type H vessels and bone mass in the physiological condition. In vitro experiments reveal indirect sympathetic modulation of angiogenesis via paracrine effects of mesenchymal stem cells (MSCs), which alter the transcription of multiple angiogenic genes in endothelial cells (ECs). Furthermore, Notch signaling in ECs underlies sympathoexcitation-regulated type H vessel formation, impacting osteogenesis and bone mass. Finally, propranolol (PRO) inhibits beta-adrenergic activity and protects type H vessels and bone mass against estrogen deficiency. These findings unravel the specialized neurovascular coupling in bone homeostasis and regeneration.
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Affiliation(s)
- Hao-Kun Xu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
- Department of Oral Anatomy and Physiology, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Jie-Xi Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Chen-Xi Zheng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Lu Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
- Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Chao Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Jiong-Yi Tian
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Yuan Yuan
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
- Exercise Immunology Center, Wuhan Sports University, Wuhan, Hubei 430079, China
| | - Yuan Cao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
- Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Shu-Juan Xing
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Si-Ying Liu
- Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Qiang Li
- Department of General Dentistry & Emergency, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Ya-Juan Zhao
- Department of General Dentistry & Emergency, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Liang Kong
- Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Yong-Jin Chen
- Department of General Dentistry & Emergency, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
| | - Bing-Dong Sui
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China
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Sanicola HW, Stewart CE, Luther P, Yabut K, Guthikonda B, Jordan JD, Alexander JS. Pathophysiology, Management, and Therapeutics in Subarachnoid Hemorrhage and Delayed Cerebral Ischemia: An Overview. PATHOPHYSIOLOGY 2023; 30:420-442. [PMID: 37755398 PMCID: PMC10536590 DOI: 10.3390/pathophysiology30030032] [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: 07/20/2023] [Revised: 08/21/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
Subarachnoid hemorrhage (SAH) is a type of hemorrhagic stroke resulting from the rupture of an arterial vessel within the brain. Unlike other stroke types, SAH affects both young adults (mid-40s) and the geriatric population. Patients with SAH often experience significant neurological deficits, leading to a substantial societal burden in terms of lost potential years of life. This review provides a comprehensive overview of SAH, examining its development across different stages (early, intermediate, and late) and highlighting the pathophysiological and pathohistological processes specific to each phase. The clinical management of SAH is also explored, focusing on tailored treatments and interventions to address the unique pathological changes that occur during each stage. Additionally, the paper reviews current treatment modalities and pharmacological interventions based on the evolving guidelines provided by the American Heart Association (AHA). Recent advances in our understanding of SAH will facilitate clinicians' improved management of SAH to reduce the incidence of delayed cerebral ischemia in patients.
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Affiliation(s)
- Henry W. Sanicola
- Department of Neurology, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA;
| | - Caleb E. Stewart
- Department of Neurosurgery, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA;
| | - Patrick Luther
- School of Medicine, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA; (P.L.); (K.Y.)
| | - Kevin Yabut
- School of Medicine, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA; (P.L.); (K.Y.)
| | - Bharat Guthikonda
- Department of Neurosurgery, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA;
| | - J. Dedrick Jordan
- Department of Neurology, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA;
| | - J. Steven Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center in Shreveport, Shreveport, LA 71103, USA
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Frigerio ED, Guizelini CDC, Jussiani GG, Março KS, de Melo GD, Watanabe TTN, Machado GF. Lymphocytic hypophysitis in dogs infected with Leishmania spp. Front Vet Sci 2023; 10:1208919. [PMID: 37781278 PMCID: PMC10537919 DOI: 10.3389/fvets.2023.1208919] [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: 04/19/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023] Open
Abstract
Background Morphological involvement of endocrine glands, such as the pituitary gland, remain uninvestigated in dogs with canine visceral leishmaniasis. Therefore, this study investigated the presence of amastigotes of Leishmania spp. and characterized inflammatory changes, highlighting the involvement of TCD3+ lymphocytes in different regions of the pituitary gland of dogs. Methods Samples were collected from 21 naturally infected dogs and 5 control, uninfected dogs. The different pituitary regions were analyzed in histological sections stained with hematoxylin and eosin (HE) under light microscopy. Inflammation was classified by intensity in a score from 0 to 3, absent (0), mild (1), moderate (2), and marked (3). The immunohistochemical (IHC) evaluation was performed in five high-power fields (hot spot) in a 40x objective of each region with manual counting (Image J1.52ª) of the TCD3+ lymphocytes and for amastigotes analyzed in 40x and 100x objectives. The Shapiro-Wilk test was used to assess the normality of the data. Differences between groups were determined by the Mann Whitney test. The correlation between variables was assessed by Sperman's correlation test. p < 0.05 were considered statistically significant. Results Amastigotes from the pituitary glands of two infected dogs were identified using IHC. The histopathological evaluation stained with hematoxylin and eosin showed greater intensity of inflammation in the pars distalis and pars intermedia regions of infected dogs. IHC for TCD3+ lymphocytes showed a higher median number of immunolabeled cells in pars nervosa in the infected group than in the control group (p < 0.05); and expecting a variation in the distribution and number of these cells in naturally infected dogs, the median of the control group was considered a cut-off point, an increase in T lymphocytes (p < 0.05) was also observed in the pars intermedia and pars distalis of an infected subgroup (n = 10). A moderate significant correlation between the intensity of inflammation and the number of immunolabeled TCD3+ lymphocytes was established in the analyzed pituitary regions, characterizing the occurrence of hypophysitis. Conclusion These findings presuppose that inflammation and/or the parasite in the pituitary region can result in gland dysfunction, worsening the clinical condition of the patient and compromising the efficiency of treatment and prognosis.
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Affiliation(s)
- Edenilson Doná Frigerio
- Department of Veterinary Clinics, Surgery and Reproduction, Faculty of Veterinary Medicine, São Paulo State University, UNESP, Araçatuba, Brazil
| | - Cecilia de Castro Guizelini
- Department of Veterinary Clinics, Surgery and Reproduction, Faculty of Veterinary Medicine, São Paulo State University, UNESP, Araçatuba, Brazil
| | - Giulia Gonçalves Jussiani
- Department of Veterinary Clinics, Surgery and Reproduction, Faculty of Veterinary Medicine, São Paulo State University, UNESP, Araçatuba, Brazil
| | - Karen Santos Março
- Department of Veterinary Clinics, Surgery and Reproduction, Faculty of Veterinary Medicine, São Paulo State University, UNESP, Araçatuba, Brazil
| | - Guilherme Dias de Melo
- Institut Pasteur, Université Paris Cité, Lyssavirus Epidemiology and Neuropathology Unit, Paris, France
| | - Tatiane Terumi Negrão Watanabe
- Department Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, United States
| | - Gisele Fabrino Machado
- Department of Veterinary Clinics, Surgery and Reproduction, Faculty of Veterinary Medicine, São Paulo State University, UNESP, Araçatuba, Brazil
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Zhou R, Li J, Wang R, Chen Z, Zhou F. The neurovascular unit in healthy and injured spinal cord. J Cereb Blood Flow Metab 2023; 43:1437-1455. [PMID: 37190756 PMCID: PMC10414016 DOI: 10.1177/0271678x231172008] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 02/09/2023] [Accepted: 03/24/2023] [Indexed: 05/17/2023]
Abstract
The neurovascular unit (NVU) reflects the close temporal and spatial link between neurons and blood vessels. However, the understanding of the NVU in the spinal cord is far from clear and largely based on generalized knowledge obtained from the brain. Herein, we review the present knowledge of the NVU and highlight candidate approaches to investigate the NVU, particularly focusing on the spinal cord. Several unique features maintain the highly regulated microenvironment in the NVU. Autoregulation and neurovascular coupling ensure regional blood flow meets the metabolic demand according to the blood supply or local neural activation. The blood-central nervous system barrier partitions the circulating blood from neural parenchyma and facilitates the selective exchange of substances. Furthermore, we discuss spinal cord injury (SCI) as a common injury from the perspective of NVU dysfunction. Hopefully, this review will help expand the understanding of the NVU in the spinal cord and inspire new insights into SCI.
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Affiliation(s)
- Rubing Zhou
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Junzhao Li
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Ruideng Wang
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Zhengyang Chen
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Fang Zhou
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
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Su T, Zhou S, Yang S, Humble N, Zhang F, Yu G, Bos PD, Cheng F, Valerie K, Zhu G. Lymph node-targeting adjuvant/neoantigen-codelivering vaccines for combination glioblastoma radioimmunotherapy. Theranostics 2023; 13:4304-4315. [PMID: 37649594 PMCID: PMC10465217 DOI: 10.7150/thno.84443] [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: 03/19/2023] [Accepted: 06/29/2023] [Indexed: 09/01/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and lethal type of adult brain cancer. Current GBM standard of care, including radiotherapy, often ends up with cancer recurrence, resulting in limited long-term survival benefits for GBM patients. Immunotherapy, such as immune checkpoint blockade (ICB), has thus far shown limited clinical benefit for GBM patients. Therapeutic vaccines hold great potential to elicit anti-cancer adaptive immunity, which can be synergistically combined with ICB and radiotherapy. Peptide vaccines are attractive for their ease of manufacturing and stability, but their therapeutic efficacy has been limited due to poor vaccine co-delivery and the limited ability of monovalent antigen vaccines to prevent tumor immune evasion. To address these challenges, here, we report GBM radioimmunotherapy that combines radiotherapy, ICB, and multivalent lymph-node-targeting adjuvant/antigen-codelivering albumin-binding vaccines (AAco-AlbiVax). Specifically, to codeliver peptide neoantigens and adjuvant CpG to lymph nodes (LNs), we developed AAco-AlbiVax based on a Y-shaped DNA scaffold that was site-specifically conjugated with CpG, peptide neoantigens, and albumin-binding maleimide-modified Evans blue derivative (MEB). As a result, these vaccines elicited antitumor immunity including neoantigen-specific CD8+ T cell responses in mice. In orthotopic GBM mice, the combination of AAco-AlbiVax, ICB, and fractionated radiation enhanced GBM therapeutic efficacy. However, radioimmunotherapy only trended more efficacious over radiotherapy alone. Taken together, these studies underscore the great potential of radioimmunotherapy for GBM, and future optimization of treatment dosing and scheduling would improve the therapeutic efficacy.
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Affiliation(s)
- Ting Su
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences; The Developmental Therapeutics Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Shurong Zhou
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences; The Developmental Therapeutics Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
- Department of Pharmaceutical Sciences, College of Pharmacy; Biointerfaces Institute. University of Michigan, Ann Arbor, MI 48109, USA
| | - Suling Yang
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences; The Developmental Therapeutics Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
- Department of Pharmaceutical Sciences, College of Pharmacy; Biointerfaces Institute. University of Michigan, Ann Arbor, MI 48109, USA
| | - Nicholas Humble
- Department of Radiation Oncology, School of Medicine; The Developmental Therapeutics Program Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Fuwu Zhang
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - Guocan Yu
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Paula D. Bos
- Department of Pathology, School of Medicine; Cancer Biology Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Furong Cheng
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences; The Developmental Therapeutics Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Kristoffer Valerie
- Department of Radiation Oncology, School of Medicine; The Developmental Therapeutics Program Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Guizhi Zhu
- Department of Pharmaceutics and Center for Pharmaceutical Engineering and Sciences; The Developmental Therapeutics Program, Massey Cancer Center; Virginia Commonwealth University, Richmond, VA 23298, USA
- Department of Pharmaceutical Sciences, College of Pharmacy; Biointerfaces Institute. University of Michigan, Ann Arbor, MI 48109, USA
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Kurokawa R, Kurokawa M, Isshiki S, Harada T, Nakaya M, Baba A, Naganawa S, Kim J, Bapuraj J, Srinivasan A, Abe O, Moritani T. Dural and Leptomeningeal Diseases: Anatomy, Causes, and Neuroimaging Findings. Radiographics 2023; 43:e230039. [PMID: 37535461 DOI: 10.1148/rg.230039] [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: 08/05/2023]
Abstract
Meningeal lesions can be caused by various conditions and pose diagnostic challenges. The authors review the anatomy of the meninges in the brain and spinal cord to provide a better understanding of the localization and extension of these diseases and summarize the clinical and imaging features of various conditions that cause dural and/or leptomeningeal enhancing lesions. These conditions include infectious meningitis (bacterial, tuberculous, viral, and fungal), autoimmune diseases (vasculitis, connective tissue diseases, autoimmune meningoencephalitis, Vogt-Koyanagi-Harada disease, neuro-Behçet syndrome, Susac syndrome, and sarcoidosis), primary and secondary tumors (meningioma, diffuse leptomeningeal glioneuronal tumor, melanocytic tumors, and lymphoma), tumorlike diseases (histiocytosis and immunoglobulin G4-related diseases), medication-induced diseases (immune-related adverse effects and posterior reversible encephalopathy syndrome), and other conditions (spontaneous intracranial hypotension, amyloidosis, and moyamoya disease). Although meningeal lesions may manifest with nonspecific imaging findings, correct diagnosis is important because the treatment strategy varies among these diseases. ©RSNA, 2023 Online supplemental material and the slide presentation from the RSNA Annual Meeting are available for this article. Quiz questions for this article are available through the Online Learning Center.
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Affiliation(s)
- Ryo Kurokawa
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Mariko Kurokawa
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Saiko Isshiki
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Taisuke Harada
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Moto Nakaya
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Akira Baba
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Shotaro Naganawa
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - John Kim
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Jayapalli Bapuraj
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Ashok Srinivasan
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Osamu Abe
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
| | - Toshio Moritani
- From the Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 E Medical Center Dr, UH B2, Ann Arbor, MI 48109 (R.K., M.K., A.B., S.N., J.K., J.B., A.S., T.M.); Department of Radiology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan (R.K., M.K., M.N., S.N., O.A.); Department of Radiology, Niizashiki Central General Hospital, Saitama, Japan (S.I.); and Department of Diagnostic Imaging, Hokkaido University Graduate School of Medicine, Sapporo, Japan (T.H.)
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Inoue Y, Shue F, Bu G, Kanekiyo T. Pathophysiology and probable etiology of cerebral small vessel disease in vascular dementia and Alzheimer's disease. Mol Neurodegener 2023; 18:46. [PMID: 37434208 PMCID: PMC10334598 DOI: 10.1186/s13024-023-00640-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 06/28/2023] [Indexed: 07/13/2023] Open
Abstract
Vascular cognitive impairment and dementia (VCID) is commonly caused by vascular injuries in cerebral large and small vessels and is a key driver of age-related cognitive decline. Severe VCID includes post-stroke dementia, subcortical ischemic vascular dementia, multi-infarct dementia, and mixed dementia. While VCID is acknowledged as the second most common form of dementia after Alzheimer's disease (AD) accounting for 20% of dementia cases, VCID and AD frequently coexist. In VCID, cerebral small vessel disease (cSVD) often affects arterioles, capillaries, and venules, where arteriolosclerosis and cerebral amyloid angiopathy (CAA) are major pathologies. White matter hyperintensities, recent small subcortical infarcts, lacunes of presumed vascular origin, enlarged perivascular space, microbleeds, and brain atrophy are neuroimaging hallmarks of cSVD. The current primary approach to cSVD treatment is to control vascular risk factors such as hypertension, dyslipidemia, diabetes, and smoking. However, causal therapeutic strategies have not been established partly due to the heterogeneous pathogenesis of cSVD. In this review, we summarize the pathophysiology of cSVD and discuss the probable etiological pathways by focusing on hypoperfusion/hypoxia, blood-brain barriers (BBB) dysregulation, brain fluid drainage disturbances, and vascular inflammation to define potential diagnostic and therapeutic targets for cSVD.
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Affiliation(s)
- Yasuteru Inoue
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224 USA
| | - Francis Shue
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224 USA
| | - Guojun Bu
- SciNeuro Pharmaceuticals, Rockville, MD 20850 USA
| | - Takahisa Kanekiyo
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224 USA
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Pamphlett R, Bishop DP. The toxic metal hypothesis for neurological disorders. Front Neurol 2023; 14:1173779. [PMID: 37426441 PMCID: PMC10328356 DOI: 10.3389/fneur.2023.1173779] [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: 02/25/2023] [Accepted: 05/30/2023] [Indexed: 07/11/2023] Open
Abstract
Multiple sclerosis and the major sporadic neurogenerative disorders, amyotrophic lateral sclerosis, Parkinson disease, and Alzheimer disease are considered to have both genetic and environmental components. Advances have been made in finding genetic predispositions to these disorders, but it has been difficult to pin down environmental agents that trigger them. Environmental toxic metals have been implicated in neurological disorders, since human exposure to toxic metals is common from anthropogenic and natural sources, and toxic metals have damaging properties that are suspected to underlie many of these disorders. Questions remain, however, as to how toxic metals enter the nervous system, if one or combinations of metals are sufficient to precipitate disease, and how toxic metal exposure results in different patterns of neuronal and white matter loss. The hypothesis presented here is that damage to selective locus ceruleus neurons from toxic metals causes dysfunction of the blood-brain barrier. This allows circulating toxicants to enter astrocytes, from where they are transferred to, and damage, oligodendrocytes, and neurons. The type of neurological disorder that arises depends on (i) which locus ceruleus neurons are damaged, (ii) genetic variants that give rise to susceptibility to toxic metal uptake, cytotoxicity, or clearance, (iii) the age, frequency, and duration of toxicant exposure, and (iv) the uptake of various mixtures of toxic metals. Evidence supporting this hypothesis is presented, concentrating on studies that have examined the distribution of toxic metals in the human nervous system. Clinicopathological features shared between neurological disorders are listed that can be linked to toxic metals. Details are provided on how the hypothesis applies to multiple sclerosis and the major neurodegenerative disorders. Further avenues to explore the toxic metal hypothesis for neurological disorders are suggested. In conclusion, environmental toxic metals may play a part in several common neurological disorders. While further evidence to support this hypothesis is needed, to protect the nervous system it would be prudent to take steps to reduce environmental toxic metal pollution from industrial, mining, and manufacturing sources, and from the burning of fossil fuels.
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Affiliation(s)
- Roger Pamphlett
- Department of Pathology, Brain and Mind Centre, School of Medical Sciences, The University of Sydney, Sydney, NSW, Australia
- Department of Neuropathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
- Hyphenated Mass Spectrometry Laboratory, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, Australia
| | - David P. Bishop
- Hyphenated Mass Spectrometry Laboratory, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, Australia
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Iadecola C, Smith EE, Anrather J, Gu C, Mishra A, Misra S, Perez-Pinzon MA, Shih AY, Sorond FA, van Veluw SJ, Wellington CL. The Neurovasculome: Key Roles in Brain Health and Cognitive Impairment: A Scientific Statement From the American Heart Association/American Stroke Association. Stroke 2023; 54:e251-e271. [PMID: 37009740 PMCID: PMC10228567 DOI: 10.1161/str.0000000000000431] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
BACKGROUND Preservation of brain health has emerged as a leading public health priority for the aging world population. Advances in neurovascular biology have revealed an intricate relationship among brain cells, meninges, and the hematic and lymphatic vasculature (the neurovasculome) that is highly relevant to the maintenance of cognitive function. In this scientific statement, a multidisciplinary team of experts examines these advances, assesses their relevance to brain health and disease, identifies knowledge gaps, and provides future directions. METHODS Authors with relevant expertise were selected in accordance with the American Heart Association conflict-of-interest management policy. They were assigned topics pertaining to their areas of expertise, reviewed the literature, and summarized the available data. RESULTS The neurovasculome, composed of extracranial, intracranial, and meningeal vessels, as well as lymphatics and associated cells, subserves critical homeostatic functions vital for brain health. These include delivering O2 and nutrients through blood flow and regulating immune trafficking, as well as clearing pathogenic proteins through perivascular spaces and dural lymphatics. Single-cell omics technologies have unveiled an unprecedented molecular heterogeneity in the cellular components of the neurovasculome and have identified novel reciprocal interactions with brain cells. The evidence suggests a previously unappreciated diversity of the pathogenic mechanisms by which disruption of the neurovasculome contributes to cognitive dysfunction in neurovascular and neurodegenerative diseases, providing new opportunities for the prevention, recognition, and treatment of these conditions. CONCLUSIONS These advances shed new light on the symbiotic relationship between the brain and its vessels and promise to provide new diagnostic and therapeutic approaches for brain disorders associated with cognitive dysfunction.
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Choi BR, Johnson KR, Maric D, McGavern DB. Monocyte-derived IL-6 programs microglia to rebuild damaged brain vasculature. Nat Immunol 2023:10.1038/s41590-023-01521-1. [PMID: 37248420 DOI: 10.1038/s41590-023-01521-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 04/25/2023] [Indexed: 05/31/2023]
Abstract
Cerebrovascular injury (CVI) is a common pathology caused by infections, injury, stroke, neurodegeneration and autoimmune disease. Rapid resolution of a CVI requires a coordinated innate immune response. In the present study, we sought mechanistic insights into how central nervous system-infiltrating monocytes program resident microglia to mediate angiogenesis and cerebrovascular repair after an intracerebral hemorrhage. In the penumbrae of human stroke brain lesions, we identified a subpopulation of microglia that express vascular endothelial growth factor A. These cells, termed 'repair-associated microglia' (RAMs), were also observed in a rodent model of CVI and coexpressed interleukin (IL)-6Ra. Cerebrovascular repair did not occur in IL-6 knockouts or in mice lacking microglial IL-6Ra expression and single-cell transcriptomic analyses revealed faulty RAM programming in the absence of IL-6 signaling. Infiltrating CCR2+ monocytes were the primary source of IL-6 after a CVI and were required to endow microglia with proliferative and proangiogenic properties. Faulty RAM programming in the absence of IL-6 or inflammatory monocytes resulted in poor cerebrovascular repair, neuronal destruction and sustained neurological deficits that were all restored via exogenous IL-6 administration. These data provide a molecular and cellular basis for how monocytes instruct microglia to repair damaged brain vasculature and promote functional recovery after injury.
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Affiliation(s)
- Bo-Ran Choi
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Kory R Johnson
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Dragan Maric
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Dorian B McGavern
- Viral Immunology and Intravital Imaging Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA.
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Su Y, Zheng H, Shi C, Li X, Zhang S, Guo G, Yu W, Zhang S, Hu Z, Yang J, Xia Z, Mao C, Xu Y. Meningeal immunity and neurological diseases: new approaches, new insights. J Neuroinflammation 2023; 20:125. [PMID: 37231449 DOI: 10.1186/s12974-023-02803-z] [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: 03/02/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023] Open
Abstract
The meninges, membranes surrounding the central nervous system (CNS) boundary, harbor a diverse array of immunocompetent immune cells, and therefore, serve as an immunologically active site. Meningeal immunity has emerged as a key factor in modulating proper brain function and social behavior, performing constant immune surveillance of the CNS, and participating in several neurological diseases. However, it remains to be determined how meningeal immunity contributes to CNS physiology and pathophysiology. With the advances in single-cell omics, new approaches, such as single-cell technologies, unveiled the details of cellular and molecular mechanisms underlying meningeal immunity in CNS homeostasis and dysfunction. These new findings contradict some previous dogmas and shed new light on new possible therapeutic targets. In this review, we focus on the complicated multi-components, powerful meningeal immunosurveillance capability, and its crucial involvement in physiological and neuropathological conditions, as recently revealed by single-cell technologies.
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Affiliation(s)
- Yun Su
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Huimin Zheng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Changhe Shi
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xinwei Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Shuyu Zhang
- Neuro-Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Guangyu Guo
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
| | - Wenkai Yu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Shuo Zhang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhengwei Hu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Jing Yang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zongping Xia
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China
| | - Chengyuan Mao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China.
- The Academy of Medical Sciences of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Sino-British Research Centre for Molecular Oncology, National Centre for International Research in Cell and Gene Therapy, School of Basic Medical Sciences, Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China.
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, No.1 Eastern Jian-She Road, Zhengzhou, 450052, Henan, China.
- Henan Key Laboratory of Cerebrovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450052, Henan, China.
- NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Diseases, Zhengzhou, 450052, Henan, China.
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Dermitzakis I, Theotokis P, Evangelidis P, Delilampou E, Evangelidis N, Chatzisavvidou A, Avramidou E, Manthou ME. CNS Border-Associated Macrophages: Ontogeny and Potential Implication in Disease. Curr Issues Mol Biol 2023; 45:4285-4300. [PMID: 37232741 DOI: 10.3390/cimb45050272] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/08/2023] [Accepted: 05/11/2023] [Indexed: 05/27/2023] Open
Abstract
Being immune privileged, the central nervous system (CNS) is constituted by unique parenchymal and non-parenchymal tissue-resident macrophages, namely, microglia and border-associated macrophages (BAMs), respectively. BAMs are found in the choroid plexus, meningeal and perivascular spaces, playing critical roles in maintaining CNS homeostasis while being phenotypically and functionally distinct from microglial cells. Although the ontogeny of microglia has been largely determined, BAMs need comparable scrutiny as they have been recently discovered and have not been thoroughly explored. Newly developed techniques have transformed our understanding of BAMs, revealing their cellular heterogeneity and diversity. Recent data showed that BAMs also originate from yolk sac progenitors instead of bone marrow-derived monocytes, highlighting the absolute need to further investigate their repopulation pattern in adult CNS. Shedding light on the molecular cues and drivers orchestrating BAM generation is essential for delineating their cellular identity. BAMs are receiving more attention since they are gradually incorporated into neurodegenerative and neuroinflammatory disease evaluations. The present review provides insights towards the current understanding regarding the ontogeny of BAMs and their involvement in CNS diseases, paving their way into targeted therapeutic strategies and precision medicine.
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Affiliation(s)
- Iasonas Dermitzakis
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Paschalis Theotokis
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Paschalis Evangelidis
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Efthymia Delilampou
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Nikolaos Evangelidis
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Anastasia Chatzisavvidou
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Eleni Avramidou
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Eleni Manthou
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Lu W, Ji H, Wu D. SIRT2 plays complex roles in neuroinflammation neuroimmunology-associated disorders. Front Immunol 2023; 14:1174180. [PMID: 37215138 PMCID: PMC10196137 DOI: 10.3389/fimmu.2023.1174180] [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: 02/26/2023] [Accepted: 04/21/2023] [Indexed: 05/24/2023] Open
Abstract
Neuroinflammation and neuroimmunology-associated disorders, including ischemic stroke and neurodegenerative disease, commonly cause severe neurologic function deficits, including bradypragia, hemiplegia, aphasia, and cognitive impairment, and the pathological mechanism is not completely clear. SIRT2, an NAD+-dependent deacetylase predominantly localized in the cytoplasm, was proven to play an important and paradoxical role in regulating ischemic stroke and neurodegenerative disease. This review summarizes the comprehensive mechanism of the crucial pathological functions of SIRT2 in apoptosis, necroptosis, autophagy, neuroinflammation, and immune response. Elaborating on the mechanism by which SIRT2 participates in neuroinflammation and neuroimmunology-associated disorders is beneficial to discover novel effective drugs for diseases, varying from vascular disorders to neurodegenerative diseases.
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44
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Goertz JE, Garcia-Bonilla L, Iadecola C, Anrather J. Immune compartments at the brain's borders in health and neurovascular diseases. Semin Immunopathol 2023:10.1007/s00281-023-00992-6. [PMID: 37138042 DOI: 10.1007/s00281-023-00992-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 03/14/2023] [Indexed: 05/05/2023]
Abstract
Recent evidence implicates cranial border immune compartments in the meninges, choroid plexus, circumventricular organs, and skull bone marrow in several neuroinflammatory and neoplastic diseases. Their pathogenic importance has also been described for cardiovascular diseases such as hypertension and stroke. In this review, we will examine the cellular composition of these cranial border immune niches, the potential pathways through which they might interact, and the evidence linking them to cardiovascular disease.
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Affiliation(s)
- Jennifer E Goertz
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, 407 East 61St Street; RR-405, New York, NY, 10065, USA
| | - Lidia Garcia-Bonilla
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, 407 East 61St Street; RR-405, New York, NY, 10065, USA
| | - Costantino Iadecola
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, 407 East 61St Street; RR-405, New York, NY, 10065, USA
| | - Josef Anrather
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, 407 East 61St Street; RR-405, New York, NY, 10065, USA.
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45
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Stephens R, Grainger JR, Smith CJ, Allan SM. Systemic innate myeloid responses to acute ischaemic and haemorrhagic stroke. Semin Immunopathol 2023; 45:281-294. [PMID: 36346451 PMCID: PMC9641697 DOI: 10.1007/s00281-022-00968-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/11/2022] [Indexed: 11/10/2022]
Abstract
Acute ischaemic and haemorrhagic stroke account for significant disability and morbidity burdens worldwide. The myeloid arm of the peripheral innate immune system is critical in the immunological response to acute ischaemic and haemorrhagic stroke. Neutrophils, monocytes, and dendritic cells (DC) contribute to the evolution of pathogenic local and systemic inflammation, whilst maintaining a critical role in ongoing immunity protecting against secondary infections. This review aims to summarise the key alterations to myeloid immunity in acute ischaemic stroke, intracerebral haemorrhage (ICH), and subarachnoid haemorrhage (SAH). By integrating clinical and preclinical research, we discover how myeloid immunity is affected across multiple organ systems including the brain, blood, bone marrow, spleen, and lung, and evaluate how these perturbations associate with real-world outcomes including infection. These findings are placed in the context of the rapidly developing field of human immunology, which offers a wealth of opportunity for further research.
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Affiliation(s)
- Ruth Stephens
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Geoffrey Jefferson Brain Research Centre, Manchester Academic Health Science Centre, Northern Care Alliance NHS Foundation Trust, University of Manchester, Manchester, UK
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
| | - John R Grainger
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Craig J Smith
- Geoffrey Jefferson Brain Research Centre, Manchester Academic Health Science Centre, Northern Care Alliance NHS Foundation Trust, University of Manchester, Manchester, UK
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK
- Division of Cardiovascular Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Clinical Neurosciences, Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - Stuart M Allan
- Division of Neuroscience, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
- Geoffrey Jefferson Brain Research Centre, Manchester Academic Health Science Centre, Northern Care Alliance NHS Foundation Trust, University of Manchester, Manchester, UK.
- Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK.
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Vo T, Balderson B, Jones K, Ni G, Crawford J, Millar A, Tolson E, Singleton M, Kojic M, Robertson T, Walters S, Mulay O, Bhuva DD, Davis MJ, Wainwright BJ, Nguyen Q, Genovesi LA. Spatial transcriptomic analysis of Sonic hedgehog medulloblastoma identifies that the loss of heterogeneity and promotion of differentiation underlies the response to CDK4/6 inhibition. Genome Med 2023; 15:29. [PMID: 37127652 PMCID: PMC10150495 DOI: 10.1186/s13073-023-01185-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 04/20/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND Medulloblastoma (MB) is a malignant tumour of the cerebellum which can be classified into four major subgroups based on gene expression and genomic features. Single-cell transcriptome studies have defined the cellular states underlying each MB subgroup; however, the spatial organisation of these diverse cell states and how this impacts response to therapy remains to be determined. METHODS Here, we used spatially resolved transcriptomics to define the cellular diversity within a sonic hedgehog (SHH) patient-derived model of MB and show that cells specific to a transcriptional state or spatial location are pivotal for CDK4/6 inhibitor, Palbociclib, treatment response. We integrated spatial gene expression with histological annotation and single-cell gene expression data from MB, developing an analysis strategy to spatially map cell type responses within the hybrid system of human and mouse cells and their interface within an intact brain tumour section. RESULTS We distinguish neoplastic and non-neoplastic cells within tumours and from the surrounding cerebellar tissue, further refining pathological annotation. We identify a regional response to Palbociclib, with reduced proliferation and induced neuronal differentiation in both treated tumours. Additionally, we resolve at a cellular resolution a distinct tumour interface where the tumour contacts neighbouring mouse brain tissue consisting of abundant astrocytes and microglia and continues to proliferate despite Palbociclib treatment. CONCLUSIONS Our data highlight the power of using spatial transcriptomics to characterise the response of a tumour to a targeted therapy and provide further insights into the molecular and cellular basis underlying the response and resistance to CDK4/6 inhibitors in SHH MB.
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Affiliation(s)
- Tuan Vo
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Brad Balderson
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Kahli Jones
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Guiyan Ni
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Joanna Crawford
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Amanda Millar
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Elissa Tolson
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Matthew Singleton
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Marija Kojic
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Thomas Robertson
- Department of Pathology, Royal Brisbane and Women's Hospital, University of Queensland, Brisbane, QLD, 4029, Australia
| | - Shaun Walters
- School of Biomedical Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Onkar Mulay
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Dharmesh D Bhuva
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Faculty of Medicine, South Australian Immunogenomics Cancer Institute, The University of Adelaide, Adelaide, SA, 5000, Australia
| | - Melissa J Davis
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Faculty of Medicine, South Australian Immunogenomics Cancer Institute, The University of Adelaide, Adelaide, SA, 5000, Australia
- Department of Clinical Pathology, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Brandon J Wainwright
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia
| | - Quan Nguyen
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia.
| | - Laura A Genovesi
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD, 4072, Australia.
- The University of Queensland Frazer Institute, Translational Research Institute, Woolloongabba, QLD, 4102, Australia.
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Zhang F, Xu Z, Jolly KJ. Myeloid cell-mediated drug delivery: from nanomedicine to cell therapy. Adv Drug Deliv Rev 2023; 197:114827. [PMID: 37068659 DOI: 10.1016/j.addr.2023.114827] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/23/2023] [Accepted: 04/11/2023] [Indexed: 04/19/2023]
Abstract
In the presence of tissue inflammation, injury, or cancer, myeloid cells are recruited to disease regions through a multi-step process involving myelopoiesis, chemotaxis, cell migration, and diapedesis. As an emerging drug delivery approach, cell-mediated drug delivery takes advantage of the cell recruitment process to enhance the active transport of therapeutic cargo to disease regions. In the past few decades, a variety of nano-engineering methods have emerged to enhance interactions of nanoparticles with cells of interest, which can be adapted for cell-mediated drug delivery. Moreover, the drug delivery field can benefit from the recent clinical success of cell-based therapies, which created cell-engineering methods to engineer circulating leukocytes as 'living drug delivery vehicles' to target diseased tissues. In this review, we first provide an overview of myeloid cell recruitment and discuss how various factors within this process may affect cell-mediated delivery. In the second part of this review article, we summarize the status quo of nano-engineering and cell-engineering approaches and discuss how these engineering approaches can be adapted for cell-mediated delivery. Finally, we discuss future directions of this field, pointing out key challenges in the clinical translation of cell-mediated drug delivery.
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Affiliation(s)
- Fan Zhang
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA; Department of Chemical Engineering, College of Engineering, University of Florida, Gainesville, FL, USA; Department of Pharmacology & Therapeutics, College of Medicine, University of Florida, Gainesville, FL, USA.
| | - Zijing Xu
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Kevon J Jolly
- Department of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, FL, USA
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Li Z, Antila S, Nurmi H, Chilov D, Korhonen EA, Fang S, Karaman S, Engelhardt B, Alitalo K. Blockade of VEGFR3 signaling leads to functional impairment of dural lymphatic vessels without affecting autoimmune neuroinflammation. Sci Immunol 2023; 8:eabq0375. [PMID: 37058549 DOI: 10.1126/sciimmunol.abq0375] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
The recent discovery of lymphatic vessels (LVs) in the dura mater, the outermost layer of meninges around the central nervous system (CNS), has opened a possibility for the development of alternative therapeutics for CNS disorders. The vascular endothelial growth factor C (VEGF-C)/VEGF receptor 3 (VEGFR3) signaling pathway is essential for the development and maintenance of dural LVs. However, its significance in mediating dural lymphatic function in CNS autoimmunity is unclear. We show that inhibition of the VEGF-C/VEGFR3 signaling pathway using a monoclonal VEGFR3-blocking antibody, a soluble VEGF-C/D trap, or deletion of the Vegfr3 gene in adult lymphatic endothelium causes notable regression and functional impairment of dural LVs but has no effect on the development of CNS autoimmunity in mice. During autoimmune neuroinflammation, the dura mater was only minimally affected, and neuroinflammation-induced helper T (TH) cell recruitment, activation, and polarization were significantly less pronounced in the dura mater than in the CNS. In support of this notion, during autoimmune neuroinflammation, blood vascular endothelial cells in the cranial and spinal dura expressed lower levels of cell adhesion molecules and chemokines, and antigen-presenting cells (i.e., macrophages and dendritic cells) had lower expression of chemokines, MHC class II-associated molecules, and costimulatory molecules than their counterparts in the brain and spinal cord, respectively. The significantly weaker TH cell responses in the dura mater may explain why dural LVs do not contribute directly to CNS autoimmunity.
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Affiliation(s)
- Zhilin Li
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Salli Antila
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
| | - Harri Nurmi
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
| | - Dmitri Chilov
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Emilia A Korhonen
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
| | - Shentong Fang
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
| | - Sinem Karaman
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
| | | | - Kari Alitalo
- Translational Cancer Medicine Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Wihuri Research Institute, Helsinki, Finland
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49
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Hasel P, Cooper ML, Marchildon AE, Rufen-Blanchette UA, Kim RD, Ma TC, Kang UJ, Chao MV, Liddelow SA. Defining the molecular identity and morphology of glia limitans superficialis astrocytes in mouse and human. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.06.535893. [PMID: 37066303 PMCID: PMC10104130 DOI: 10.1101/2023.04.06.535893] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Astrocytes are a highly abundant glial cell type that perform critical homeostatic functions in the central nervous system. Like neurons, astrocytes have many discrete heterogenous subtypes. The subtype identity and functions are, at least in part, associated with their anatomical location and can be highly restricted to strategically important anatomical domains. Here, we report that astrocytes forming the glia limitans superficialis, the outermost border of brain and spinal cord, are a highly specialized astrocyte subtype and can be identified by a single marker: Myocilin (Myoc). We show that Myoc+ astrocytes cover the entire brain and spinal cord surface, exhibit an atypical morphology, and are evolutionarily conserved from rodents to humans. Identification of this highly specialized astrocyte subtype will advance our understanding of CNS homeostasis and potentially be targeted for therapeutic intervention to combat peripheral inflammatory effects on the CNS.
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Affiliation(s)
- Philip Hasel
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
| | - Melissa L Cooper
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
| | - Anne E Marchildon
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
| | | | - Rachel D Kim
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
| | - Thong C Ma
- Fresco Institute for Parkinson’s and Movement Disorders, Department of Neurology, NYU Grossman School of Medicine, New York, NY., USA
- Parekh Center for Interdisciplinary Neurology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY., USA
| | - Un Jung Kang
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
- Fresco Institute for Parkinson’s and Movement Disorders, Department of Neurology, NYU Grossman School of Medicine, New York, NY., USA
- Parekh Center for Interdisciplinary Neurology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY., USA
| | - Moses V Chao
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Cell Biology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Psychiatry, NYU Grossman School of Medicine, New York, NY., USA
| | - Shane A Liddelow
- Neuroscience Institute, NYU Grossman School of Medicine, New York, NY., USA
- Parekh Center for Interdisciplinary Neurology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Neuroscience and Physiology, NYU Grossman School of Medicine, New York, NY., USA
- Department of Ophthalmology, NYU Grossman School of Medicine, New York, NY., USA
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50
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Torun IM, Tukenmez Dikmen N, Tellioglu Saka N, Sonmez M. Choroidal Structural Alterations and Choroidal Vascularity Index in Bipolar Disorder Patients. Photodiagnosis Photodyn Ther 2023; 42:103518. [PMID: 36948410 DOI: 10.1016/j.pdpdt.2023.103518] [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: 02/19/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/24/2023]
Abstract
PURPOSE The aim of this study was to compare bipolar disorder (BD) patients with age- and sex-matched healthy individuals in order to assess the choroidal structural alterations, retinal nerve fiber layer (RNFL) thickness, and retinal changes in BD patients using encanhed depth imaging optic coherence tomography (EDI-OCT). METHOD For this research, 39 eyes of BD patients and 36 eyes of age-matched healthy volunteers were used. Five locations were used to assess the choroidal thickness (CT): subfoveal, 500 µm nasal and 1500 µm nasal to the fovea, 500 µm temporal and 1500 µm temporal to the fovea. Image-J was used to determine the total choroidal area (TCA), luminal area (LA), and choroidal vascularity index (CVI). The Spectralis-OCT device was used to evaluate the central macular thickness (CMT), retinal nerve fiber layer (RNFL), and ganglion cell layer (GCL). The data were statistically compared. RESULTS BD patients had significantly decreased subfoveal, nasal, and temporal CTs than controls (for all three, p = 0.0001). The results of CMT and GCL were found to be thinner than controls. (for all p=0.0001) In comparison to the controls, the mean TCA and LA were decreased in the BD group. (p=0.0001, p=0.0001 respectively,). Between the RNFL and CVI values in the BD and control groups, there was no statistically significant difference (p>0.05). CONCLUSION The results of this investigation showed that the retina and choroid of patients with BD had considerable anatomical changes.
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Affiliation(s)
- Isil Merve Torun
- Department of Ophthalmology, Medical Health Sciences University, Sultan Abdulhamid Han Training and Research Hospital, İstanbul, Turkey.
| | - Nejla Tukenmez Dikmen
- Department of Ophthalmology, Medical Health Sciences University, Sultan Abdulhamid Han Training and Research Hospital, İstanbul, Turkey.
| | - Nergis Tellioglu Saka
- Department of Psychiatry, Medical Health Sciences University, Sultan Abdulhamid Han Training and Research Hospital, İstanbul, Turkey.
| | - Murat Sonmez
- Department of Ophthalmology, Medical Health Sciences University, Sultan Abdulhamid Han Training and Research Hospital, İstanbul, Turkey.
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