1
|
Fernandez MK, Sinha M, Zidan M, Renz M. Nuclear actin filaments - a historical perspective. Nucleus 2024; 15:2320656. [PMID: 38384139 PMCID: PMC10885181 DOI: 10.1080/19491034.2024.2320656] [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: 11/22/2023] [Accepted: 02/14/2024] [Indexed: 02/23/2024] Open
Abstract
The view on nuclear filaments formed by non-skeletal β-actin has significantly changed over the decades. Initially, filamentous actin was observed in amphibian oocyte nuclei and only under specific cell stress conditions in mammalian cell nuclei. Improved labeling and imaging technologies have permitted insights into a transient but microscopically apparent filament network that is relevant for chromatin organization, biomechanics of the mammalian cell nucleus, gene expression, and DNA damage repair. Here, we will provide a historical perspective on the developing insight into nuclear actin filaments.
Collapse
Affiliation(s)
| | - Molika Sinha
- Gynecologic Oncology Division, School of Medicine Stanford University, Palo Alto, CA, USA
| | - Mia Zidan
- Gynecologic Oncology Division, School of Medicine Stanford University, Palo Alto, CA, USA
| | - Malte Renz
- Gynecologic Oncology Division, School of Medicine Stanford University, Palo Alto, CA, USA
| |
Collapse
|
2
|
Guo J, Wang J, Zhang K, Yang Z, Li B, Pan Y, Yu H, Yu S, Abbas Raza SH, Kuraz Abebea B, Zan L. Molecular cloning of TPM3 gene in qinchuan cattle and its effect on myoblast proliferation and differentiation. Anim Biotechnol 2024; 35:2345238. [PMID: 38775564 DOI: 10.1080/10495398.2024.2345238] [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: 05/30/2024]
Abstract
Tropomyosin 3 (TPM3) plays a significant role as a regulatory protein in muscle contraction, affecting the growth and development of skeletal muscles. Despite its importance, limited research has been conducted to investigate the influence of TPM3 on bovine skeletal muscle development. Therefore, this study revealed the role of TPM3 in bovine myoblast growth and development. This research involved conducting a thorough examination of the Qinchuan cattle TPM3 gene using bioinformatics tools to examine its sequence and structural characteristics. Furthermore, TPM3 expression was evaluated in various bovine tissues and cells using quantitative real-time polymerase chain reaction (qRT-PCR). The results showed that the coding region of TPM3 spans 855 bp, with the 161st base being the T base, encoding a protein with 284 amino acids and 19 phosphorylation sites. This protein demonstrated high conservation across species while displaying a predominant α-helix secondary structure despite being an unstable acidic protein. Notably, a noticeable increase in TPM3 expression was observed in the longissimus dorsi muscle and myocardium of calves and adult cattle. Expression patterns varied during different stages of myoblast differentiation. Functional studies that involved interference with TPM3 in Qinchuan cattle myoblasts revealed a very significantly decrease in S-phase cell numbers and EdU-positive staining (P < 0.01), and disrupted myotube morphology. Moreover, interference with TPM3 resulted in significantly (P < 0.05) or highly significantly (P < 0.01) decreased mRNA and protein levels of key proliferation and differentiation markers, indicating its role in the modulation of myoblast behavior. These findings suggest that TPM3 plays an essential role in bovine skeletal muscle growth by influencing myoblast proliferation and differentiation. This study provides a foundation for further exploration into the mechanisms underlying TPM3-mediated regulation of bovine muscle development and provides valuable insights that could guide future research directions as well as potential applications for livestock breeding and addressing muscle-related disorders.
Collapse
Affiliation(s)
- Juntao Guo
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Jianfang Wang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Ke Zhang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Zhimei Yang
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Bingzhi Li
- Yangling Vocational and Technical College, Yangling, China
| | - Yueting Pan
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Hengwei Yu
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Shengchen Yu
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Sayed Haidar Abbas Raza
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, China
| | - Belete Kuraz Abebea
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A and F University, Yangling, China
- National Beef Cattle Improvement Center, Yangling, China
| |
Collapse
|
3
|
Sviben S, Polino AJ, Melena IL, Hughes JW. Immuno-scanning electron microscopy of islet primary cilia. J Cell Sci 2024; 137:jcs262038. [PMID: 38804679 PMCID: PMC11166453 DOI: 10.1242/jcs.262038] [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: 02/22/2024] [Accepted: 04/19/2024] [Indexed: 05/29/2024] Open
Abstract
The definitive demonstration of protein localization on primary cilia has been a challenge for cilia biologists. Primary cilia are solitary thread-like projections that have a specialized protein composition, but as the ciliary structure overlays the cell membrane and other cell parts, the identity of ciliary proteins are difficult to ascertain by conventional imaging approaches like immunofluorescence microscopy. Surface scanning electron microscopy combined with immunolabeling (immuno-SEM) bypasses some of these indeterminacies by unambiguously showing protein expression in the context of the three-dimensional ultrastructure of the cilium. Here, we apply immuno-SEM to specifically identify proteins on the primary cilia of mouse and human pancreatic islets, including post-translationally modified tubulin, intraflagellar transport (IFT)88, the small GTPase Arl13b, as well as subunits of axonemal dynein. Key parameters in sample preparation, immunolabeling and imaging acquisition are discussed to facilitate similar studies by others in the cilia research community.
Collapse
Affiliation(s)
- Sanja Sviben
- Washington University Center for Cellular Imaging, Washington University School of Medicine, 660 South Euclid Ave, Saint Louis, MO 63110, USA
| | - Alexander J. Polino
- Department of Cell Biology and Physiology, Washington University School of Medicine, 660 South Euclid Ave, Saint Louis, MO 63110, USA
| | - Isabella L. Melena
- Department of Medicine, Washington University School of Medicine, 660 South Euclid Ave, Saint Louis, MO 63110, USA
| | - Jing W. Hughes
- Department of Cell Biology and Physiology, Washington University School of Medicine, 660 South Euclid Ave, Saint Louis, MO 63110, USA
- Department of Medicine, Washington University School of Medicine, 660 South Euclid Ave, Saint Louis, MO 63110, USA
| |
Collapse
|
4
|
Attrill ST, Dolan L. KATANIN-mediated microtubule severing is required for MTOC organisation and function in Marchantia polymorpha. Development 2024; 151:dev202672. [PMID: 38572965 PMCID: PMC11112166 DOI: 10.1242/dev.202672] [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: 01/04/2024] [Accepted: 03/20/2024] [Indexed: 04/05/2024]
Abstract
Microtubule organising centres (MTOCs) are sites of localised microtubule nucleation in eukaryotic cells. Regulation of microtubule dynamics often involves KATANIN (KTN): a microtubule severing enzyme that cuts microtubules to generate new negative ends, leading to catastrophic depolymerisation. In Arabidopsis thaliana, KTN is required for the organisation of microtubules in the cell cortex, preprophase band, mitotic spindle and phragmoplast. However, as angiosperms lack MTOCs, the role of KTN in MTOC formation has yet to be studied in plants. Two unique MTOCs - the polar organisers - form on opposing sides of the preprophase nucleus in liverworts. Here, we show that KTN-mediated microtubule depolymerisation regulates the number and organisation of polar organisers formed in Marchantia polymorpha. Mpktn mutants that lacked KTN function had supernumerary disorganised polar organisers compared with wild type. This was in addition to defects in the microtubule organisation in the cell cortex, preprophase band, mitotic spindle and phragmoplast. These data are consistent with the hypothesis that KTN-mediated microtubule dynamics are required for the de novo formation of MTOCs, a previously unreported function in plants.
Collapse
Affiliation(s)
- Sarah T. Attrill
- Gregor Mendel Institute, Dr Bohr-Gasse 3, Vienna 1030, Austria
- Department of Biology, University of Oxford, South Parks Road, Oxford OX1 3RB, UK
| | - Liam Dolan
- Gregor Mendel Institute, Dr Bohr-Gasse 3, Vienna 1030, Austria
- Department of Biology, University of Oxford, South Parks Road, Oxford OX1 3RB, UK
| |
Collapse
|
5
|
Salvador-Garcia D, Jin L, Hensley A, Gölcük M, Gallaud E, Chaaban S, Port F, Vagnoni A, Planelles-Herrero VJ, McClintock MA, Derivery E, Carter AP, Giet R, Gür M, Yildiz A, Bullock SL. A force-sensitive mutation reveals a non-canonical role for dynein in anaphase progression. J Cell Biol 2024; 223:e202310022. [PMID: 38949648 PMCID: PMC11215527 DOI: 10.1083/jcb.202310022] [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: 10/06/2023] [Revised: 04/29/2024] [Accepted: 06/18/2024] [Indexed: 07/02/2024] Open
Abstract
The diverse roles of the dynein motor in shaping microtubule networks and cargo transport complicate in vivo analysis of its functions significantly. To address this issue, we have generated a series of missense mutations in Drosophila Dynein heavy chain. We show that mutations associated with human neurological disease cause a range of defects, including impaired cargo trafficking in neurons. We also describe a novel microtubule-binding domain mutation that specifically blocks the metaphase-anaphase transition during mitosis in the embryo. This effect is independent from dynein's canonical role in silencing the spindle assembly checkpoint. Optical trapping of purified dynein complexes reveals that this mutation only compromises motor performance under load, a finding rationalized by the results of all-atom molecular dynamics simulations. We propose that dynein has a novel function in anaphase progression that depends on it operating in a specific load regime. More broadly, our work illustrates how in vivo functions of motors can be dissected by manipulating their mechanical properties.
Collapse
Affiliation(s)
- David Salvador-Garcia
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Li Jin
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Andrew Hensley
- Department of Physics, University of California, Berkeley, Berkeley, CA, USA
| | - Mert Gölcük
- School of Mechanical Engineering, Istanbul Technical University, Istanbul, Turkey
| | - Emmanuel Gallaud
- Institut de Génétique et Développement de Rennes, Université de Rennes, Rennes, France
| | - Sami Chaaban
- Structural Studies Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Fillip Port
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Alessio Vagnoni
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | | | - Mark A. McClintock
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Emmanuel Derivery
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Andrew P. Carter
- Structural Studies Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Régis Giet
- Institut de Génétique et Développement de Rennes, Université de Rennes, Rennes, France
| | - Mert Gür
- School of Mechanical Engineering, Istanbul Technical University, Istanbul, Turkey
- Department of Computational and Systems Biology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Ahmet Yildiz
- Department of Physics, University of California, Berkeley, Berkeley, CA, USA
- Department of Molecular and Cellular Biology, University of California, Berkeley, Berkeley, CA, USA
| | - Simon L. Bullock
- Cell Biology Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| |
Collapse
|
6
|
Gray S, Fort C, Wheeler RJ. Intraflagellar transport speed is sensitive to genetic and mechanical perturbations to flagellar beating. J Cell Biol 2024; 223:e202401154. [PMID: 38829962 PMCID: PMC11148470 DOI: 10.1083/jcb.202401154] [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: 01/31/2024] [Revised: 05/01/2024] [Accepted: 05/13/2024] [Indexed: 06/05/2024] Open
Abstract
Two sets of motor proteins underpin motile cilia/flagella function. The axoneme-associated inner and outer dynein arms drive sliding of adjacent axoneme microtubule doublets to periodically bend the flagellum for beating, while intraflagellar transport (IFT) kinesins and dyneins carry IFT trains bidirectionally along the axoneme. Despite assembling motile cilia and flagella, IFT train speeds have only previously been quantified in immobilized flagella-mechanical immobilization or genetic paralysis. This has limited investigation of the interaction between IFT and flagellar beating. Here, in uniflagellate Leishmania parasites, we use high-frequency, dual-color fluorescence microscopy to visualize IFT train movement in beating flagella. We discovered that adhesion of flagella to a microscope slide is detrimental, reducing IFT train speed and increasing train stalling. In flagella free to move, IFT train speed is not strongly dependent on flagella beat type; however, permanent disruption of flagella beating by deletion of genes necessary for formation or regulation of beating showed an inverse correlation of beat frequency and IFT train speed.
Collapse
Affiliation(s)
- Sophie Gray
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, UK
| | - Cecile Fort
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, UK
| | - Richard John Wheeler
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, UK
| |
Collapse
|
7
|
Li WJ, Li RY, Wang DY, Shen M, Liu HL. CXCR3 participates in asymmetric division of mouse oocytes by modulating actin dynamics. Theriogenology 2024; 225:43-54. [PMID: 38788628 DOI: 10.1016/j.theriogenology.2024.05.028] [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: 12/29/2023] [Revised: 04/24/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024]
Abstract
Extensive research has been conducted on the role of CXCR3 in immune responses and inflammation. However, the role of CXCR3 in the reproductive system, particularly in oocyte development, remains unknown. In this study, we present findings on the involvement of CXCR3 in the meiotic division process of mouse oocytes. We found CXCR3 was expressed consistently throughout the entire maturation process of mouse oocyte. Inhibition of CXCR3 impaired the asymmetric division of oocyte, while the injection of Cxcr3 mRNA was capable of restoring these defects. Further study showed that inhibition of CXCR3 perturbed spindle migration by affecting LIMK/cofilin pathway-mediated actin remodeling. Knockout of CXCR3 led to an upregulation of actin-binding protein and an increased ATP level in GV-stage oocytes, while maintaining normal actin dynamics during the process of meiosis. Additionally, we noticed the expression level of DYNLT1 is markedly elevated in CXCR3-null oocytes. DYNLT1 bound with the Arp2/3 complex, and knockdown of DYNLT1 in CXCR3-null oocytes impaired the organization of cytoplasmic actin, suggesting the regulatory role of DYNLT1 in actin organization, and the compensatory expression of DYNLT1 may contribute to maintain normal actin dynamics in CXCR3-knockout oocytes. In summary, our findings provide insights into the intricate network of actin dynamics associated with CXCR3 during oocyte meiosis.
Collapse
Affiliation(s)
- Wei-Jian Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Rong-Yang Li
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, China.
| | - Da-Yu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Ming Shen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Hong-Lin Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| |
Collapse
|
8
|
Morikawa M, Yamaguchi H, Kikkawa M. Calaxin is a key factor for calcium-dependent waveform control in zebrafish sperm. Life Sci Alliance 2024; 7:e202402632. [PMID: 38876797 PMCID: PMC11178939 DOI: 10.26508/lsa.202402632] [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: 01/30/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/16/2024] Open
Abstract
Calcium is critical for regulating the waveform of motile cilia and flagella. Calaxin is currently the only known molecule involved in the calcium-dependent regulation in ascidians. We have recently shown that Calaxin stabilizes outer arm dynein (OAD), and the knockout of Calaxin results in primary ciliary dyskinesia phenotypes in vertebrates. However, from the knockout experiments, it was not clear which functions depend on calcium and how Calaxin regulates the waveform. To address this question, here, we generated transgenic zebrafish expressing a mutant E130A-Calaxin deficient in calcium binding. E130A-Calaxin restored the OAD reduction of calaxin -/- sperm and the abnormal movement of calaxin -/- left-right organizer cilia, showing that Calaxin's stabilization of OADs is calcium-independent. In contrast, our quantitative analysis of E130A-Calaxin sperms showed that the calcium-induced asymmetric beating was not restored, linking Calaxin's calcium-binding ability with an asymmetric flagellar beating for the first time. Our data show that Calaxin is a calcium-dependent regulator of the ciliary beating and a calcium-independent OAD stabilizer.
Collapse
Affiliation(s)
- Motohiro Morikawa
- https://ror.org/057zh3y96 Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroshi Yamaguchi
- https://ror.org/057zh3y96 Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masahide Kikkawa
- https://ror.org/057zh3y96 Department of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
9
|
Pfeffer PL. The first lineage determination in mammals. Dev Biol 2024; 513:12-30. [PMID: 38761966 DOI: 10.1016/j.ydbio.2024.05.011] [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: 12/18/2023] [Revised: 03/15/2024] [Accepted: 05/16/2024] [Indexed: 05/20/2024]
Abstract
This review describes in detail the morphological, cytoskeletal and gene expression events leading to the gene regulatory network bifurcation point of trophoblast and inner cell mass cells in a variety of mammalian preimplantation embryos. The interrelated processes of compaction and polarity establishment are discussed in terms of how they affect YAP/WWTR activity and the location and fate of cells. Comparisons between mouse, human, cattle, pig and rabbit embryos suggest a conserved role for YAP/WWTR signalling in trophoblast induction in eutherian animals though the mechanisms for, and timing of, YAP/WWTR activation differs among species. Downstream targets show further differences, with the trophoblast marker GATA3 being a direct target in all examined mammals, while CDX2-positive and SOX2-negative regulation varies.
Collapse
Affiliation(s)
- Peter L Pfeffer
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand.
| |
Collapse
|
10
|
Chen ST, Yan Y, He SY, Li Y, Gu N. Laser-assisted manipulation of Volta potential pattern on the TC4 surface for improved hBMSCs osteogenesis. BIOMATERIALS ADVANCES 2024; 162:213916. [PMID: 38838618 DOI: 10.1016/j.bioadv.2024.213916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 05/18/2024] [Accepted: 05/31/2024] [Indexed: 06/07/2024]
Abstract
The Ti6Al4V (TC4) alloy, a prevalent biomedical material in orthopedics, still faces limitation of the insufficient osseointegration. To improve the bioactivity of TC4, introducing the electric environment onto the TC4 surface may be an effective way in the view of the necessity of endogenous electric microenvironment in bone regeneration. Herein, a Volta potential pattern was engendered on the TC4 surface via parallel laser patterning, so as to promote the osteogenic differentiation of cells. A 15 W laser successfully transformed the original α + β dual phase towards radially distributed lath-like martensite phase in the laser treated region. The atomic lattice distortion between the heterogeneous microstructures of the laser treated and untreated regions leads to a significant Volta potential fluctuation on the TC4 surface. The Volta potential pattern as well as the laser-engraved microgrooves respectively induced mutually orthogonal cell alignments. The hBMSCs osteogenic differentiation was significantly enhanced on the laser treated TC4 surfaces in comparison to the surface without the laser treatment. Moreover, a drastic Volta potential gradient on the TC4 surface (treated with 15 W power and 400 μm interval) resulted in the most pronounced osteogenic differentiation tendency compared to other groups. Modulating the electric environment on the TC4 surface by manipulating the phase transformation may provide an effective way in evoking favorable cell response of bone regeneration, thereby improving the bioactivity of TC4 implant.
Collapse
Affiliation(s)
- Shi-Ting Chen
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yang Yan
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Si-Yuan He
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China.
| | - Yan Li
- State Key Laboratory of Digital Medical Engineering, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ning Gu
- Medical School, Nanjing University, Nanjing 210093, China
| |
Collapse
|
11
|
Hossen F, Sun GY, Lee JC. Oligomeric Tau-induced oxidative damage and functional alterations in cerebral endothelial cells: Role of RhoA/ROCK signaling pathway. Free Radic Biol Med 2024; 221:261-272. [PMID: 38815773 PMCID: PMC11184584 DOI: 10.1016/j.freeradbiomed.2024.05.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/22/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Despite of yet unknown mechanism, microvascular deposition of oligomeric Tau (oTau) has been implicated in alteration of the Blood-Brain Barrier (BBB) function in Alzheimer's disease (AD) brains. In this study, we employed an in vitro BBB model using primary mouse cerebral endothelial cells (CECs) to investigate the mechanism underlying the effects of oTau on BBB function. We found that exposing CECs to oTau induced oxidative stress through NADPH oxidase, increased oxidative damage to proteins, decreased proteasome activity, and expressions of tight junction (TJ) proteins including occludin, zonula occludens-1 (ZO-1) and claudin-5. These effects were suppressed by the pretreatment with Fasudil, a RhoA/ROCK signaling inhibitor. Consistent with the biochemical alterations, we found that exposing the basolateral side of CECs to oTau in the BBB model disrupted the integrity of the BBB, as indicated by an increase in FITC-dextran transport across the model, and a decrease in trans endothelial electrical resistance (TEER). oTau also increased the transmigration of peripheral blood mononuclear cells (PBMCs) in the BBB model. These functional alterations in the BBB induced by oTau were also suppressed by Fasudil. Taken together, our findings suggest that targeting the RhoA/ROCK pathway can be a potential therapeutic strategy to maintain BBB function in AD.
Collapse
Affiliation(s)
- Faruk Hossen
- Richard and Loan Hill Department of Biomedical Engineering, University of Illinois Chicago, Chicago, IL, 60607, USA
| | - Grace Y Sun
- Biochemistry Department, University of Missouri, Columbia, MO, 65211, USA
| | - James C Lee
- Richard and Loan Hill Department of Biomedical Engineering, University of Illinois Chicago, Chicago, IL, 60607, USA.
| |
Collapse
|
12
|
Bagdadi N, Wu J, Delaroche J, Serre L, Delphin C, De Andrade M, Carcel M, Nawabi H, Pinson B, Vérin C, Couté Y, Gory-Fauré S, Andrieux A, Stoppin-Mellet V, Arnal I. Stable GDP-tubulin islands rescue dynamic microtubules. J Cell Biol 2024; 223:e202307074. [PMID: 38758215 PMCID: PMC11101955 DOI: 10.1083/jcb.202307074] [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: 07/18/2023] [Revised: 02/26/2024] [Accepted: 05/04/2024] [Indexed: 05/18/2024] Open
Abstract
Microtubules are dynamic polymers that interconvert between phases of growth and shrinkage, yet they provide structural stability to cells. Growth involves hydrolysis of GTP-tubulin to GDP-tubulin, which releases energy that is stored within the microtubule lattice and destabilizes it; a GTP cap at microtubule ends is thought to prevent GDP subunits from rapidly dissociating and causing catastrophe. Here, using in vitro reconstitution assays, we show that GDP-tubulin, usually considered inactive, can itself assemble into microtubules, preferentially at the minus end, and promote persistent growth. GDP-tubulin-assembled microtubules are highly stable, displaying no detectable spontaneous shrinkage. Strikingly, islands of GDP-tubulin within dynamic microtubules stop shrinkage events and promote rescues. Microtubules thus possess an intrinsic capacity for stability, independent of accessory proteins. This finding provides novel mechanisms to explain microtubule dynamics.
Collapse
Affiliation(s)
- Nassiba Bagdadi
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Juliette Wu
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Julie Delaroche
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Laurence Serre
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Christian Delphin
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Manon De Andrade
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Marion Carcel
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Homaira Nawabi
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Benoît Pinson
- Metabolic Analyses Service, TBMCore—Université de Bordeaux—CNRS UAR 3427—INSERM US005, Bordeaux, France
| | - Claire Vérin
- Université Grenoble Alpes, INSERM, CEA, UA13 BGE, CNRS, FR2048, Grenoble, France
| | - Yohann Couté
- Université Grenoble Alpes, INSERM, CEA, UA13 BGE, CNRS, FR2048, Grenoble, France
| | - Sylvie Gory-Fauré
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Annie Andrieux
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Virginie Stoppin-Mellet
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| | - Isabelle Arnal
- Université Grenoble Alpes, INSERM, U1216, CNRS, CEA, Grenoble Institut Neurosciences (GIN), Grenoble, France
| |
Collapse
|
13
|
Thomas A, Meraldi P. Centrosome age breaks spindle size symmetry even in cells thought to divide symmetrically. J Cell Biol 2024; 223:e202311153. [PMID: 39012627 PMCID: PMC11252449 DOI: 10.1083/jcb.202311153] [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: 11/27/2023] [Revised: 03/14/2024] [Accepted: 05/03/2024] [Indexed: 07/17/2024] Open
Abstract
Centrosomes are the main microtubule-organizing centers in animal cells. Due to the semiconservative nature of centrosome duplication, the two centrosomes differ in age. In asymmetric stem cell divisions, centrosome age can induce an asymmetry in half-spindle lengths. However, whether centrosome age affects the symmetry of the two half-spindles in tissue culture cells thought to divide symmetrically is unknown. Here, we show that in human epithelial and fibroblastic cell lines centrosome age imposes a mild spindle asymmetry that leads to asymmetric cell daughter sizes. At the mechanistic level, we show that this asymmetry depends on a cenexin-bound pool of the mitotic kinase Plk1, which favors the preferential accumulation on old centrosomes of the microtubule nucleation-organizing proteins pericentrin, γ-tubulin, and Cdk5Rap2, and microtubule regulators TPX2 and ch-TOG. Consistently, we find that old centrosomes have a higher microtubule nucleation capacity. We postulate that centrosome age breaks spindle size symmetry via microtubule nucleation even in cells thought to divide symmetrically.
Collapse
Affiliation(s)
- Alexandre Thomas
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Translational Research Centre in Onco-hematology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Patrick Meraldi
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Translational Research Centre in Onco-hematology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| |
Collapse
|
14
|
Pan X, Hu Y, Lei G, Wei Y, Li J, Luan T, Zhang Y, Chu Y, Feng Y, Zhan W, Zhao C, Meunier FA, Liu Y, Li Y, Wang T. Actomyosin-II protects axons from degeneration induced by mild mechanical stress. J Cell Biol 2024; 223:e202206046. [PMID: 38713825 PMCID: PMC11076810 DOI: 10.1083/jcb.202206046] [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: 06/19/2022] [Revised: 06/16/2023] [Accepted: 04/09/2024] [Indexed: 05/09/2024] Open
Abstract
Whether, to what extent, and how the axons in the central nervous system (CNS) can withstand sudden mechanical impacts remain unclear. By using a microfluidic device to apply controlled transverse mechanical stress to axons, we determined the stress levels that most axons can withstand and explored their instant responses at nanoscale resolution. We found mild stress triggers a highly reversible, rapid axon beading response, driven by actomyosin-II-dependent dynamic diameter modulations. This mechanism contributes to hindering the long-range spread of stress-induced Ca2+ elevations into non-stressed neuronal regions. Through pharmacological and molecular manipulations in vitro, we found that actomyosin-II inactivation diminishes the reversible beading process, fostering progressive Ca2+ spreading and thereby increasing acute axonal degeneration in stressed axons. Conversely, upregulating actomyosin-II activity prevents the progression of initial injury, protecting stressed axons from acute degeneration both in vitro and in vivo. Our study unveils the periodic actomyosin-II in axon shafts cortex as a novel protective mechanism, shielding neurons from detrimental effects caused by mechanical stress.
Collapse
Affiliation(s)
- Xiaorong Pan
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yiqing Hu
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Gaowei Lei
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences China, Shanghai, China
| | - Yaxuan Wei
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences China, Shanghai, China
| | - Jie Li
- Division of Chemistry and Physical Biology, School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- Shanghai Clinical Research and Trial Center, Shanghai, China
| | - Tongshu Luan
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yunfan Zhang
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences China, Shanghai, China
| | - Yuanyuan Chu
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Yu Feng
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Wenrong Zhan
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Chunxia Zhao
- School of Chemical Engineering, The University of Adelaide, Adelaide, Australia
| | - Frédéric A. Meunier
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Brisbane, Australia
- School of Biomedical Sciences, The University of Queensland, Brisbane, Australia
| | - Yifan Liu
- Division of Chemistry and Physical Biology, School of Physical Science and Technology, ShanghaiTech University, Shanghai, China
- Shanghai Clinical Research and Trial Center, Shanghai, China
| | - Yi Li
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences China, Shanghai, China
| | - Tong Wang
- The Brain Center, School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| |
Collapse
|
15
|
Korb A, Tajbakhsh S, Comai GE. Functional specialisation and coordination of myonuclei. Biol Rev Camb Philos Soc 2024; 99:1164-1195. [PMID: 38477382 DOI: 10.1111/brv.13063] [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: 04/10/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 03/14/2024]
Abstract
Myofibres serve as the functional unit for locomotion, with the sarcomere as fundamental subunit. Running the entire length of this structure are hundreds of myonuclei, located at the periphery of the myofibre, juxtaposed to the plasma membrane. Myonuclear specialisation and clustering at the centre and ends of the fibre are known to be essential for muscle contraction, yet the molecular basis of this regionalisation has remained unclear. While the 'myonuclear domain hypothesis' helped explain how myonuclei can independently govern large cytoplasmic territories, novel technologies have provided granularity on the diverse transcriptional programs running simultaneously within the syncytia and added a new perspective on how myonuclei communicate. Building upon this, we explore the critical cellular and molecular sources of transcriptional and functional heterogeneity within myofibres, discussing the impact of intrinsic and extrinsic factors on myonuclear programs. This knowledge provides new insights for understanding muscle development, repair, and disease, but also opens avenues for the development of novel and precise therapeutic approaches.
Collapse
Affiliation(s)
- Amaury Korb
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
| | - Shahragim Tajbakhsh
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
| | - Glenda E Comai
- Institut Pasteur, Université Paris Cité, CNRS UMR 3738, Stem Cells & Development Unit, 25 rue du Dr. Roux, Institut Pasteur, Paris, F-75015, France
| |
Collapse
|
16
|
Buchholz S, Zempel H. Suppression of mature TAU isoforms prevents Alzheimer's disease-like amyloid-beta oligomer-induced spine loss in rodent neurons. Neural Regen Res 2024; 19:1655-1657. [PMID: 38103227 PMCID: PMC10960270 DOI: 10.4103/1673-5374.389644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/08/2023] [Accepted: 10/25/2023] [Indexed: 12/18/2023] Open
Affiliation(s)
- Sarah Buchholz
- Institute of Human Genetics, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Hans Zempel
- Institute of Human Genetics, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| |
Collapse
|
17
|
Joshi JN, Changela N, Mahal L, Jang J, Defosse T, Wang LI, Das A, Shapiro JG, McKim K. Meiosis-specific functions of kinetochore protein SPC105R required for chromosome segregation in Drosophila oocytes. Mol Biol Cell 2024; 35:ar105. [PMID: 38865189 DOI: 10.1091/mbc.e24-02-0067] [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] [Indexed: 06/13/2024] Open
Abstract
The reductional division of meiosis I requires the separation of chromosome pairs towards opposite poles. We have previously implicated the outer kinetochore protein SPC105R/KNL1 in driving meiosis I chromosome segregation through lateral attachments to microtubules and coorientation of sister centromeres. To identify the domains of SPC105R that are critical for meiotic chromosome segregation, an RNAi-resistant gene expression system was developed. We found that the SPC105R C-terminal domain (aa 1284-1960) is necessary and sufficient for recruiting NDC80 to the kinetochore and building the outer kinetochore. Furthermore, the C-terminal domain recruits BUBR1, which in turn recruits the cohesion protection proteins MEI-S332 and PP2A. Of the remaining 1283 amino acids, we found the first 473 are most important for meiosis. The first 123 amino acids of the N-terminal half of SPC105R contain the conserved SLRK and RISF motifs that are targets of PP1 and Aurora B kinase and are most important for regulating the stability of microtubule attachments and maintaining metaphase I arrest. The region between amino acids 124 and 473 are required for lateral microtubule attachments and biorientation of homologues, which are critical for accurate chromosome segregation in meiosis I.
Collapse
Affiliation(s)
- Jay N Joshi
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Neha Changela
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Lia Mahal
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Janet Jang
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Tyler Defosse
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Lin-Ing Wang
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Arunika Das
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Joanatta G Shapiro
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| | - Kim McKim
- Waksman Institute and Department of Genetics, Rutgers, the State University of New Jersey, Piscataway, NJ 08854
| |
Collapse
|
18
|
Park J, Wu Y, Suk Kim J, Byun J, Lee J, Oh YK. Cytoskeleton-modulating nanomaterials and their therapeutic potentials. Adv Drug Deliv Rev 2024; 211:115362. [PMID: 38906478 DOI: 10.1016/j.addr.2024.115362] [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: 03/14/2024] [Revised: 05/25/2024] [Accepted: 06/16/2024] [Indexed: 06/23/2024]
Abstract
The cytoskeleton, an intricate network of protein fibers within cells, plays a pivotal role in maintaining cell shape, enabling movement, and facilitating intracellular transport. Its involvement in various pathological states, ranging from cancer proliferation and metastasis to the progression of neurodegenerative disorders, underscores its potential as a target for therapeutic intervention. The exploration of nanotechnology in this realm, particularly the use of nanomaterials for cytoskeletal modulation, represents a cutting-edge approach with the promise of novel treatments. Inorganic nanomaterials, including those derived from gold, metal oxides, carbon, and black phosphorus, alongside organic variants such as peptides and proteins, are at the forefront of this research. These materials offer diverse mechanisms of action, either by directly interacting with cytoskeletal components or by influencing cellular signaling pathways that, in turn, modulate the cytoskeleton. Recent advancements have introduced magnetic field-responsive and light-responsive nanomaterials, which allow for targeted and controlled manipulation of the cytoskeleton. Such precision is crucial in minimizing off-target effects and enhancing therapeutic efficacy. This review explores the importance of research into cytoskeleton-targeting nanomaterials for developing therapeutic interventions for a range of diseases. It also addresses the progress made in this field, the challenges encountered, and future directions for using nanomaterials to modulate the cytoskeleton. The continued exploration of nanomaterials for cytoskeleton modulation holds great promise for advancing therapeutic strategies against a broad spectrum of diseases, marking a significant step forward in the intersection of nanotechnology and medicine.
Collapse
Affiliation(s)
- Jinwon Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Yina Wu
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jung Suk Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Junho Byun
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| | - Jaiwoo Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| | - Yu-Kyoung Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| |
Collapse
|
19
|
Chen JS, Igarashi MG, Ren L, Hanna SM, Turner LA, McDonald NA, Beckley JR, Willet AH, Gould KL. The core spindle pole body scaffold Ppc89 links the pericentrin orthologue Pcp1 to the fission yeast spindle pole body via an evolutionarily conserved interface. Mol Biol Cell 2024; 35:ar112. [PMID: 38985524 DOI: 10.1091/mbc.e24-05-0220] [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: 07/12/2024] Open
Abstract
Centrosomes and spindle pole bodies (SPBs) are important for mitotic spindle formation and serve as cellular signaling platforms. Although centrosomes and SPBs differ in morphology, many mechanistic insights into centrosome function have been gleaned from SPB studies. In the fission yeast Schizosaccharomyces pombe, the α-helical protein Ppc89, identified based on its interaction with the septation initiation network scaffold Sid4, comprises the SPB core. High-resolution imaging has suggested that SPB proteins assemble on the Ppc89 core during SPB duplication, but such interactions are undefined. Here, we define a connection between Ppc89 and the essential pericentrin Pcp1. Specifically, we found that a predicted third helix within Ppc89 binds the Pcp1 pericentrin-AKAP450 centrosomal targeting (PACT) domain complexed with calmodulin. Ppc89 helix 3 contains similarity to present in the N-terminus of Cep57 (PINC) motifs found in the centrosomal proteins fly SAS-6 and human Cep57 and also to the S. cerevisiae SPB protein Spc42. These motifs bind pericentrin-calmodulin complexes and AlphaFold2 models suggest a homologous complex assembles in all four organisms. Mutational analysis of the S. pombe complex supports the importance of Ppc89-Pcp1 binding interface in vivo. Our studies provide insight into the core architecture of the S. pombe SPB and suggest an evolutionarily conserved mechanism of scaffolding pericentrin-calmodulin complexes for mitotic spindle formation.
Collapse
Affiliation(s)
- Jun-Song Chen
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Maya G Igarashi
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Liping Ren
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Sarah M Hanna
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Lesley A Turner
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Nathan A McDonald
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Janel R Beckley
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Alaina H Willet
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Kathleen L Gould
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| |
Collapse
|
20
|
Gallo G. The Axonal Actin Filament Cytoskeleton: Structure, Function, and Relevance to Injury and Degeneration. Mol Neurobiol 2024; 61:5646-5664. [PMID: 38216856 DOI: 10.1007/s12035-023-03879-7] [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: 10/26/2023] [Accepted: 12/13/2023] [Indexed: 01/14/2024]
Abstract
Early investigations of the neuronal actin filament cytoskeleton gave rise to the notion that, although growth cones exhibit high levels of actin filaments, the axon shaft exhibits low levels of actin filaments. With the development of new tools and imaging techniques, the axonal actin filament cytoskeleton has undergone a renaissance and is now an active field of research. This article reviews the current state of knowledge about the actin cytoskeleton of the axon shaft. The best understood forms of actin filament organization along axons are axonal actin patches and a submembranous system of rings that endow the axon with protrusive competency and structural integrity, respectively. Additional forms of actin filament organization along the axon have also been described and their roles are being elucidated. Extracellular signals regulate the axonal actin filament cytoskeleton and our understanding of the signaling mechanisms involved is being elaborated. Finally, recent years have seen advances in our perspective on how the axonal actin cytoskeleton is impacted by, and contributes to, axon injury and degeneration. The work to date has opened new venues and future research will undoubtedly continue to provide a richer understanding of the axonal actin filament cytoskeleton.
Collapse
Affiliation(s)
- Gianluca Gallo
- Department of Neural Sciences, Shriners Pediatric Research Center, Lewis Katz School of Medicine at Temple University, 3500 North Broad St, Philadelphia, PA, 19140, USA.
| |
Collapse
|
21
|
Han N, Cheng S, Jin Y, Li G, Wang H, Jin L. Low-intensity pulsed ultrasound combined with ST36 modulate gastric smooth muscle contractile marker expression via RhoA/Rock and MALAT1/miR-449a/DLL1 signaling in diabetic rats. Neurogastroenterol Motil 2024; 36:e14843. [PMID: 38873849 DOI: 10.1111/nmo.14843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 04/11/2024] [Accepted: 05/15/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND Low-intensity pulsed ultrasound (LIPUS) combined with acupoint can promote gastric motility of diabetic rats. The switch of gastric smooth muscle cell (GSMCs) phenotype was related to the diabetes-induced gastric dysfunction, but the mechanism is not clearly elucidated. This study was aimed at exploring the underlying mechanism of LIPUS stimulation application in diabetic gastroparesis rats. METHODS In this study, Sprague-Dawley male rats were divided into three groups: control group (CON), diabetic gastroparesis group (DGP), and LIPUS-treated group (LIPUS). LIPUS irradiation was performed bilaterally at ST36 for 20 min per day for 4 weeks. The gastric emptying rate was measured by ultrasound examination. Contraction ability of GSMCs was assessed by muscle strip experiment. The expression of related proteins or mRNAs including α-SMA, SM22α, MHC, RhoA, Rock2, p-MYPT1, MYPT1, p-MLC, MLC, MALAT1, miR-449a, and DLL1 was detected by different methods such as western blotting, RT-qPCR, immunohistochemistry, and immunofluorescence staining, as appropriate. KEY RESULTS (a) LIPUS stimulation at ST36 could improve the gastric motility dysfunction of diabetic rats. (b) LIPUS increased RhoA, Rock2, p-MYPT1, and p-MLC expression level. (c) MALAT1 and DLL1 contents were decreased, but the level of miR-449a was increased in the LIPUS group. CONCLUSIONS & INFERENCES LIPUS may affect the contractile marker expression of gastric smooth muscle through the RhoA/Rock and MALAT1/miR-449a/DLL1 pathway to ameliorate DGP.
Collapse
Affiliation(s)
- Nie Han
- Department of Ultrasound, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Shaodan Cheng
- Department of Rehabilitation, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ye Jin
- Department of Traditional Chinese Medicine, Industrial Zone Community Health Service Center of Jiading District, Shanghai, China
| | - Guanheng Li
- Department of Ultrasound, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huan Wang
- Shanghai Acoustics Laboratory, Chinese Academy of Science, Shanghai, China
| | - Lin Jin
- Department of Ultrasound, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| |
Collapse
|
22
|
Chen TA, Zhao BB, Balbin RA, Sharma S, Ha D, Kamp TJ, Zhou Y, Zhao F. Engineering a robust and anisotropic cardiac-specific extracellular matrix scaffold for cardiac patch tissue engineering. Matrix Biol Plus 2024; 23:100151. [PMID: 38882397 PMCID: PMC11176808 DOI: 10.1016/j.mbplus.2024.100151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/22/2024] [Accepted: 05/18/2024] [Indexed: 06/18/2024] Open
Abstract
Extracellular matrix (ECM) fabricated using human induced pluripotent stem cells (hiPSCs)-derived cardiac fibroblasts (hiPSC-CFs) could serve as a completely biological scaffold for an engineered cardiac patch, leveraging the unlimited source and outstanding reproducibility of hiPSC-CFs. Additionally, hiPSC-CF-derived ECM (hiPSC-CF-ECM) holds the potential to enhance maturation of exogenous cardiomyocytes, such as hiPSC-derived cardiomyocytes (hiPSC-CMs), by providing a microenvironment rich in cardiac-specific biochemical and signaling cues. However, achieving sufficient robustness of hiPSC-CF-ECM is challenging. This study aims to achieve appropriate ECM deposition, scaffold thickness, and mechanical strength of an aligned hiPSC-CF-ECM by optimizing the culture period, ranging from 2 to 10 weeks, of hiPSC-CFs grown on micro-grated substrates, which can direct the alignment of both hiPSC-CFs and their secreted ECM. The hiPSC-CFs demonstrated a production rate of 13.5 µg ECM per day per 20,000 cells seeded. An anisotropic nanofibrous hiPSC-CF-ECM scaffold with a thickness of 20.0 ± 2.1 µm was achieved after 6 weeks of culture, followed by decellularization. Compositional analysis through liquid chromatography-mass spectrometry (LC-MS) revealed the presence of cardiac-specific fibrillar collagens, non-fibrillar collagens, and matricellular proteins. Uniaxial tensile stretching of the hiPSC-CF-ECM scaffold indicated robust tensile resilience. Finally, hiPSCs-CMs cultured on the hiPSC-CF-ECM exhibited alignment following the guidance of ECM nanofibers and demonstrated mature organization of key structural proteins. The culture duration of the anisotropic hiPSC-CF-ECM was successfully refined to achieve a robust scaffold containing structural proteins that resembles cardiac microenvironment. This completely biological, anisotropic, and cardiac-specific ECM holds great potential for cardiac patch engineering.
Collapse
Affiliation(s)
- Te-An Chen
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Brandon B. Zhao
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Richard A. Balbin
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Sameeksha Sharma
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Donggi Ha
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Timothy J. Kamp
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA
- Stem Cell and Regenerative Medicine Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Yuxiao Zhou
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Feng Zhao
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| |
Collapse
|
23
|
Bonnefoy S, Alves AA, Bertiaux E, Bastin P. LRRC56 is an IFT cargo required for assembly of the distal dynein docking complex in Trypanosoma brucei. Mol Biol Cell 2024; 35:ar106. [PMID: 38865178 DOI: 10.1091/mbc.e23-11-0425] [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: 06/13/2024] Open
Abstract
Outer dynein arms (ODAs) are responsible for ciliary beating in eukaryotes. They are assembled in the cytoplasm and shipped by intraflagellar transport (IFT) before attachment to microtubule doublets via the docking complex. The LRRC56 protein has been proposed to contribute to ODAs maturation. Mutations or deletion of the LRRC56 gene lead to reduced ciliary motility in all species investigated so far, but with variable impact on dynein arm presence. Here, we investigated the role of LRRC56 in the protist Trypanosoma brucei, where its absence results in distal loss of ODAs, mostly in growing flagella. We show that LRRC56 is a transient cargo of IFT trains during flagellum construction and surprisingly, is required for efficient attachment of a subset of docking complex proteins present in the distal portion of the organelle. This relation is interdependent since the knockdown of the distal docking complex prevents LRRC56's association with the flagellum. Intriguingly, lrrc56-/- cells display shorter flagella whose maturation is delayed. Inhibition of cell division compensates for the distal ODAs absence thanks to the redistribution of the proximal docking complex, restoring ODAs attachment but not the flagellum length phenotype. This work reveals an unexpected connection between LRRC56 and the docking complex.
Collapse
Affiliation(s)
- Serge Bonnefoy
- Trypanosome Cell Biology Unit, Institut Pasteur, Université de Paris Cité, INSERM U1201, Paris, France
| | - Aline Araujo Alves
- Trypanosome Cell Biology Unit, Institut Pasteur, Université de Paris Cité, INSERM U1201, Paris, France
| | - Eloïse Bertiaux
- Trypanosome Cell Biology Unit, Institut Pasteur, Université de Paris Cité, INSERM U1201, Paris, France
- Sorbonne Université, école doctorale complexité du vivant, ED 515, 7, quai Saint-Bernard, case 32, 75252 Paris Cedex 05, France
| | - Philippe Bastin
- Trypanosome Cell Biology Unit, Institut Pasteur, Université de Paris Cité, INSERM U1201, Paris, France
| |
Collapse
|
24
|
Willet AH, Ren L, Turner LA, Gould KL. Transient PP2A SIP complex localization to mitotic SPBs for SIN inhibition is mediated solely by the Csc1 FHA domain. Mol Biol Cell 2024; 35:br14. [PMID: 38865179 DOI: 10.1091/mbc.e24-04-0196] [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] [Indexed: 06/13/2024] Open
Abstract
Many organisms utilize an actin- and myosin-based cytokinetic ring (CR) to help complete cytokinesis. In Schizosaccharomyces pombe, the Septation Initiation Network (SIN) promotes proper CR function and stability. The SIN is a conserved and essential signaling network consisting of a GTPase and a cascade of kinases assembled at the spindle pole body (SPB). The PP2A SIN inhibitory phosphatase (SIP) complex related to the STRIPAK phosphatase complex is one inhibitor of SIN signaling. The SIP consists of Csc1, Csc2, Csc3, Csc4, Paa1, and the phosphatase subunit Ppa3. Here, we determine that the SIP is anchored at the SPB via the Csc1 FHA domain and that constitutive SPB localization of the SIP is lethal due to persistent SIN inhibition. Disrupting SIP docking at the SPB with a point mutation within the FHA domain or eliminating phosphatase activity by introducing a point mutation within Ppa3 resulted in intact SIP complexes without SIN inhibitory function. Lastly, we defined the unique features of Ppa3 that allow it, but not two other PP2A catalytic subunits, to incorporate into the SIP. Overall, we provide insight into how the SIP complex assembles, localizes, and functions to counteract the SIN with spatiotemporal precision during cytokinesis.
Collapse
Affiliation(s)
- Alaina H Willet
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Liping Ren
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Lesley A Turner
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| | - Kathleen L Gould
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN 37240
| |
Collapse
|
25
|
Ghoytasi I, Bavi O, Kaazempur Mofrad MR, Naghdabadi R. An in-silico study on the mechanical behavior of colorectal cancer cell lines in the micropipette aspiration process. Comput Biol Med 2024; 178:108744. [PMID: 38889631 DOI: 10.1016/j.compbiomed.2024.108744] [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: 12/21/2023] [Revised: 05/17/2024] [Accepted: 06/08/2024] [Indexed: 06/20/2024]
Abstract
Cancer alters the structural integrity and morphology of cells. Consequently, the cell function is overshadowed. In this study, the micropipette aspiration process is computationally modeled to predict the mechanical behavior of the colorectal cancer cells. The intended cancer cells are modeled as an incompressible Neo-Hookean visco-hyperelastic material. Also, the micropipette is assumed to be rigid with no deformation. The proposed model is validated with an in-vitro study. To capture the equilibrium and time-dependent behaviors of cells, ramp, and creep tests are respectively performed using the finite element method. Through the simulations, the effects of the micropipette geometry and the aspiration pressure on the colorectal cancer cell lines are investigated. Our findings indicate that, as the inner radius of the micropipette increases, despite the increase in deformation rate and aspirated length, the time to reach the equilibrium state increases. Nevertheless, it is obvious that increasing the tip curvature radius has a small effect on the change of the aspirated length. But, due to the decrease in the stress concentration, it drastically reduces the equilibrium time and increases the deformation rate significantly. Interestingly, our results demonstrate that increasing the aspiration pressure somehow causes the cell stiffening, thereby reducing the upward trend of deformation rate, equilibrium time, and aspirated length. Our findings provide valuable insights for researchers in cell therapy and cancer treatment and can aid in developing more precise microfluidic.
Collapse
Affiliation(s)
- Ibrahim Ghoytasi
- Department of Mechanical Engineering, Sharif University of Technology, 89694-14588, Tehran, Iran
| | - Omid Bavi
- Department of Mechanical Engineering, Shiraz University of Technology, Shiraz, Iran.
| | - Mohammad Reza Kaazempur Mofrad
- Molecular Cell Biomechanics Laboratory, Departments of Bioengineering and Mechanical Engineering, University of California Berkeley, Berkeley, CA, 94720, USA
| | - Reza Naghdabadi
- Department of Mechanical Engineering, Sharif University of Technology, 89694-14588, Tehran, Iran; Institute for Nanoscience and Nanotechnology, Sharif University of Technology, 89694-14588, Tehran, Iran.
| |
Collapse
|
26
|
Cui Y, Megawati D, Lin J, Rehard DG, Grant DG, Liu P, Jurkevich A, Reid WR, Mooney BP, Franz AW. Cytoskeleton-associated gelsolin responds to the midgut distention process in saline meal-fed Aedes aegypti and affects arbovirus dissemination from the midgut. FASEB J 2024; 38:e23764. [PMID: 39042395 PMCID: PMC11268798 DOI: 10.1096/fj.202302684rr] [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: 12/27/2023] [Revised: 06/06/2024] [Accepted: 06/13/2024] [Indexed: 07/24/2024]
Abstract
The mosquito, Aedes aegypti, is the principal vector for several arboviruses. The mosquito midgut is the initial tissue that gets infected with an arbovirus acquired along with a blood meal from a vertebrate host. Blood meal ingestion leads to midgut tissue distention thereby increasing the pore size of the surrounding basal lamina. This allows newly synthesized virions to exit the midgut by traversing the distended basal lamina to infect secondary tissues of the mosquito. We conducted a quantitative label-free proteomic time course analysis with saline meal-fed Ae. aegypti females to identify host factors involved in midgut tissue distention. Around 2000 proteins were detected during each of the seven sampling time points and 164 of those were uniquely expressed. Forty-five of 97 differentially expressed proteins were upregulated during the 96-h time course and most of those were involved in cytoskeleton modulation, metabolic activity, and vesicle/vacuole formation. The F-actin-modulating Ae. aegypti (Aa)-gelsolin was selected for further functional studies. Stable knockout of Aa-gelsolin resulted in a mosquito line, which showed distorted actin filaments in midgut-associated tissues likely due to diminished F-actin processing by gelsolin. Zika virus dissemination from the midgut of these mosquitoes was diminished and delayed. The loss of Aa-gelsolin function was associated with an increased induction of apoptosis in midgut tissue indicating an involvement of Aa-gelsolin in apoptotic signaling in mosquitoes. Here, we used proteomics to discover a novel host factor, Aa-gelsolin, which affects the midgut escape barrier for arboviruses in mosquitoes and apoptotic signaling in the midgut.
Collapse
Affiliation(s)
- Yingjun Cui
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| | - Dewi Megawati
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
- Department of Microbiology and Parasitology, School of Medicine, Warmadewa University, Bali, Indonesia
| | - Jingyi Lin
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| | - David G. Rehard
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| | - DeAna G. Grant
- Electron Microscopy Core, University of Missouri, Columbia, Missouri, USA
| | - Pei Liu
- Charles W. Gehrke Proteomics Center, University of Missouri, Columbia, Missouri, USA
| | - Alexander Jurkevich
- Advanced Light Microscopy Core, University of Missouri, Columbia, Missouri, USA
| | - William R. Reid
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| | - Brian P. Mooney
- Charles W. Gehrke Proteomics Center, University of Missouri, Columbia, Missouri, USA
| | - Alexander W.E. Franz
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| |
Collapse
|
27
|
Zhou ZY, Ma J, Zhao WR, Shi WT, Zhang J, Hu YY, Yue MY, Zhou WL, Yan H, Tang JY, Wang Y. Qiangxinyin formula protects against isoproterenol-induced cardiac hypertrophy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155717. [PMID: 38810550 DOI: 10.1016/j.phymed.2024.155717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/08/2024] [Accepted: 05/05/2024] [Indexed: 05/31/2024]
Abstract
Heart failure is a life-threatening cardiovascular disease and characterized by cardiac hypertrophy, inflammation and fibrosis. The traditional Chinese medicine formula Qiangxinyin (QXY) is effective for the treatment of heart failure while the underlying mechanism is not clear. This study aims to identify the active ingredients of QXY and explore its mechanisms protecting against cardiac hypertrophy. We found that QXY significantly protected against isoproterenol (ISO)-induced cardiac hypertrophy and dysfunction in zebrafish. Eight compounds, including benzoylmesaconine (BMA), atractylenolide I (ATL I), icariin (ICA), quercitrin (QUE), psoralen (PRN), kaempferol (KMP), ferulic acid (FA) and protocatechuic acid (PCA) were identified from QXY. PRN, KMP and icaritin (ICT), an active pharmaceutical ingredient of ICA, prevented ISO-induced cardiac hypertrophy and dysfunction in zebrafish. In H9c2 cardiomyocyte treated with ISO, QXY significantly blocked the calcium influx, reduced intracellular lipid peroxidative product MDA, stimulated ATP production and increased mitochondrial membrane potential. QXY also inhibited ISO-induced cardiomyocyte hypertrophy and cytoskeleton reorganization. Mechanistically, QXY enhanced the phosphorylation of Smad family member 2 (SMAD2) and myosin phosphatase target subunit-1 (MYPT1), and suppressed the phosphorylation of myosin light chain (MLC). In conclusion, PRN, KMP and ICA are the main active ingredients of QXY that protect against ISO-induced cardiac hypertrophy and dysfunction largely via the blockage of calcium influx and inhibition of mitochondrial dysfunction as well as cytoskeleton reorganization.
Collapse
Affiliation(s)
- Zhong-Yan Zhou
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong Special Administrative Regions of China; State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong Special Administrative Regions of China
| | - Jie Ma
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Acupuncture-Moxibustion and Tuina, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Wai-Rong Zhao
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wen-Ting Shi
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing Zhang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yan-Yan Hu
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Mei-Yan Yue
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wen-Long Zhou
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Yan
- Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing-Yi Tang
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Yu Wang
- Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong Special Administrative Regions of China; State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong Special Administrative Regions of China.
| |
Collapse
|
28
|
Shultz KD, Al Anbari YF, Wright NT. I told you to stop: obscurin's role in epithelial cell migration. Biochem Soc Trans 2024:BST20240564. [PMID: 39051125 DOI: 10.1042/bst20240564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 07/27/2024]
Abstract
The giant cytoskeletal protein obscurin contains multiple cell signaling domains that influence cell migration. Here, we follow each of these pathways, examine how these pathways modulate epithelial cell migration, and discuss the cross-talk between these pathways. Specifically, obscurin uses its PH domain to inhibit phosphoinositide-3-kinase (PI3K)-dependent migration and its RhoGEF domain to activate RhoA and slow cell migration. While obscurin's effect on the PI3K pathway agrees with the literature, obscurin's effect on the RhoA pathway runs counter to most other RhoA effectors, whose activation tends to lead to enhanced motility. Obscurin also phosphorylates cadherins, and this may also influence cell motility. When taken together, obscurin's ability to modulate three independent cell migration pathways is likely why obscurin knockout cells experience enhanced epithelial to mesenchymal transition, and why obscurin is a frequently mutated gene in several types of cancer.
Collapse
Affiliation(s)
- Kamrin D Shultz
- Department of Chemistry and Biochemistry, James Madison University, 901 Carrier Dr., Harrisonburg, VA 22807, U.S.A
| | - Yasmin F Al Anbari
- Department of Chemistry and Biochemistry, James Madison University, 901 Carrier Dr., Harrisonburg, VA 22807, U.S.A
| | - Nathan T Wright
- Department of Chemistry and Biochemistry, James Madison University, 901 Carrier Dr., Harrisonburg, VA 22807, U.S.A
| |
Collapse
|
29
|
Yu X, Zhu Y, Yin G, Wang Y, Shi X, Cheng G. Exploiting hosts and vectors: viral strategies for facilitating transmission. EMBO Rep 2024:10.1038/s44319-024-00214-6. [PMID: 39048750 DOI: 10.1038/s44319-024-00214-6] [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: 05/29/2023] [Revised: 04/17/2024] [Accepted: 06/25/2024] [Indexed: 07/27/2024] Open
Abstract
Viruses have developed various strategies to ensure their survival and transmission. One intriguing strategy involves manipulating the behavior of infected arthropod vectors and hosts. Through intricate interactions, viruses can modify vector behavior, aiding in crossing barriers and improving transmission to new hosts. This manipulation may include altering vector feeding preferences, thus promoting virus transmission to susceptible individuals. In addition, viruses employ diverse dissemination methods, including cell-to-cell and intercellular transmission via extracellular vesicles. These strategies allow viruses to establish themselves in favorable environments, optimize replication, and increase the likelihood of spreading to other individuals. Understanding these complex viral strategies offers valuable insights into their biology, transmission dynamics, and potential interventions for controlling infections. Unraveling interactions between viruses, hosts, and vectors enables the development of targeted approaches to effectively mitigate viral diseases and prevent transmission.
Collapse
Affiliation(s)
- Xi Yu
- New Cornerstone Science Laboratory, Tsinghua-Peking Center for Life Sciences, School of Basic Medical Sciences, Tsinghua University, Beijing, 100084, China
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518000, China
- Institute of Pathogenic Organisms, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
- School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yibin Zhu
- New Cornerstone Science Laboratory, Tsinghua-Peking Center for Life Sciences, School of Basic Medical Sciences, Tsinghua University, Beijing, 100084, China
- Institute of Pathogenic Organisms, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Gang Yin
- Department of Parasitology, School of Basic Medical Sciences, Central South University, Changsha, Hunan, 410013, China
| | - Yibaina Wang
- China National Center for Food Safety Risk Assessment, Beijing, 100022, China
| | - Xiaolu Shi
- Institute of Pathogenic Organisms, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Gong Cheng
- New Cornerstone Science Laboratory, Tsinghua-Peking Center for Life Sciences, School of Basic Medical Sciences, Tsinghua University, Beijing, 100084, China.
- Institute of Infectious Diseases, Shenzhen Bay Laboratory, Shenzhen, Guangdong, 518000, China.
- Institute of Pathogenic Organisms, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China.
- Southwest United Graduate School, Kunming, 650092, China.
| |
Collapse
|
30
|
Liu F, Hou Y, Chen X, Chen Z, Su G, Lin R. Moxibustion Promoted Axonal Regeneration and Improved Learning and Memory of Post-stroke Cognitive Impairment by Regulating PI3K/AKt and TACC3. Neuroscience 2024; 551:299-306. [PMID: 38848775 DOI: 10.1016/j.neuroscience.2024.05.027] [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: 03/13/2024] [Revised: 05/10/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024]
Abstract
BACKGROUND This study aimed to investigate whether moxibustion could affect PI3K/Akt pathway to regulate Transforming acidic coiled-coil containing protein 3 (TACC3) and promote axonal regeneration to improve learning and memory function in middle cerebral artery occlusion (MCAO) rats. METHODS Sixty SD rats were randomly divided into 4 groups: sham-operated control group (SC), model control group (MC), model + moxibustion group (MM), and model + inhibitor + moxibustion group (MIM). The rats in MC, MM, and MIM groups were made into MCAO models, and PI3K inhibitor LY294002 was injected into the rats in MIM group before modeling; while the rats in SC group were only treated with artery separation without monofilament inserting. After that, the rats in MM and MIM groups were intervented with moxibustion. We used the Zea-Longa scale, micro-Magnetic Resonance Imaging (micro-MRI), Morris water maze (MWM), TUNEL, western blot (WB), immunofluorescence and immunohistochemistry to evaluate the neurological deficits, cerebral infarct volume, learning and memory, apoptotic cell percentage in the hippocampal, the expression level of axonal regeneration and PI3K/AKt related proteins, the expression level of TACC3. The detection of 2 h after surgery showed the result before moxibustion and 7 days after the intervention showed the results after moxibustion. RESULTS After 7 d of intervention, the scores of Zea-Longa and the cerebral infarct volume, the escape latency, the percentage of apoptosis cells of MM group were lower than that of MC and MIM groups; the frequency of rats crossed the previous platform location, PI3K, p-Akt/t-Akt and TACC3, the level of GAP-43 in MM group was more than MC and MIM groups (P < 0.05). While no statistical difference existed between MIM group and MC group (P > 0.05). CONCLUSION Moxibustion can promote axonal regeneration and improve learning and memory of Post-stroke cognitive impairment via activating the PI3K/AKT signaling pathway and TACC3.
Collapse
Affiliation(s)
- Fang Liu
- College of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China.
| | - YuFei Hou
- College of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| | - Xin Chen
- College of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| | - Ziqiong Chen
- College of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| | - Guiting Su
- College of Nursing, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| | - Ruhui Lin
- Innovation and Transformation Center, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| |
Collapse
|
31
|
Ikäheimo K, Leinonen S, Lankinen T, Lindahl M, Saarma M, Pirvola U. Stereocilia fusion pathology in the cochlear outer hair cells at the nanoscale level. J Physiol 2024. [PMID: 39037943 DOI: 10.1113/jp286318] [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: 01/22/2024] [Accepted: 06/12/2024] [Indexed: 07/24/2024] Open
Abstract
The hair bundle of cochlear hair cells comprises specialized microvilli, the stereocilia, which fulfil the role of mechanotransduction. Genetic defects and environmental noise challenge the maintenance of hair bundle structure, critically contributing to age-related hearing loss. Stereocilia fusion is a major component of the hair bundle pathology in mature hair cells, but its role in hearing loss and its molecular basis are poorly understood. Here, we utilized super-resolution expansion microscopy to examine the molecular anatomy of outer hair cell stereocilia fusion in mouse models of age-related hearing loss, heightened endoplasmic reticulum stress and prolonged noise exposure. Prominent stereocilia fusion in our model of heightened endoplasmic reticulum stress, Manf (Mesencephalic astrocyte-derived neurotrophic factor)-inactivated mice in a background with Cadherin 23 missense mutation, impaired mechanotransduction and calcium balance in stereocilia. This was indicated by reduced FM1-43 dye uptake through the mechanotransduction channels, reduced neuroplastin/PMCA2 expression and increased expression of the calcium buffer oncomodulin inside stereocilia. Sparse BAIAP2L2 and myosin 7a expression was retained in the fused stereocilia but mislocalized away from their functional sites at the tips. These hair bundle abnormalities preceded cell soma degeneration, suggesting a sequela from stereociliary molecular perturbations to cell death signalling. In the age-related hearing loss and noise-exposure models, stereocilia fusion was more restricted within the bundles, yet both models exhibited oncomodulin upregulation at the fusion sites, implying perturbed calcium homeostasis. We conclude that stereocilia fusion is linked with the failure to maintain cellular proteostasis and with disturbances in stereociliary calcium balance. KEY POINTS: Stereocilia fusion is a hair cell pathology causing hearing loss. Inactivation of Manf, a component of the endoplasmic reticulum proteostasis machinery, has a cell-intrinsic mode of action in triggering outer hair cell stereocilia fusion and the death of these cells. The genetic background with Cadherin 23 missense mutation contributes to the high susceptibility of outer hair cells to stereocilia fusion, evidenced in Manf-inactivated mice and in the mouse models of early-onset hearing loss and noise exposure. Endoplasmic reticulum stress feeds to outer hair cell stereocilia bundle pathology and impairs the molecular anatomy of calcium regulation. The maintenance of the outer hair cell stereocilia bundle cohesion is challenged by intrinsic and extrinsic stressors, and understanding the underlying mechanisms will probably benefit the development of interventions to promote hearing health.
Collapse
Affiliation(s)
- Kuu Ikäheimo
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Saija Leinonen
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Tuuli Lankinen
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| | - Maria Lindahl
- Institute of Biotechnology, HILIFE Unit, University of Helsinki, Helsinki, Finland
| | - Mart Saarma
- Institute of Biotechnology, HILIFE Unit, University of Helsinki, Helsinki, Finland
| | - Ulla Pirvola
- Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
| |
Collapse
|
32
|
Hei B, Tardiff JC, Schwartz SD. Human cardiac β-myosin powerstroke energetics: Thin filament, Pi displacement, and mutation effects. Biophys J 2024:S0006-3495(24)00451-X. [PMID: 39001604 DOI: 10.1016/j.bpj.2024.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 07/01/2024] [Accepted: 07/09/2024] [Indexed: 07/25/2024] Open
Abstract
The powerstroke of human cardiac β-myosin is an important stage of the cross-bridge cycle that generates force for muscle contraction. However, the starting structure of this process has never been resolved, and the relative timing of the powerstroke and inorganic phosphate (Pi) release is still controversial. In this study, we generated an atomistic model of myosin on the thin filament and utilized metadynamics simulations to predict the absent starting structure of the powerstroke. We demonstrated that the displacement of Pi from the active site during the powerstroke is likely necessary, reducing the energy barrier of the conformation change. The effects of the presence of the thin filament, the hypertrophic cardiomyopathy mutation R712L, and the binding of mavacamten on the powerstroke process were also investigated.
Collapse
Affiliation(s)
- Bai Hei
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona
| | - Jil C Tardiff
- Department of Biomedical Engineering, University of Arizona, Tucson, Arizona
| | - Steven D Schwartz
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona.
| |
Collapse
|
33
|
Wen ZH, Chang L, Yang SN, Yu CL, Tung FY, Kuo HM, Lu IC, Wu CY, Shih PC, Chen WF, Chen NF. The anti-angiogenic and anti-vasculogenic mimicry effects of GN25 in endothelial and glioma cells. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024:119799. [PMID: 39043304 DOI: 10.1016/j.bbamcr.2024.119799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 06/12/2024] [Accepted: 06/27/2024] [Indexed: 07/25/2024]
Abstract
BACKGROUND AND PURPOSE Scientists have been exploring anti-angiogenic strategies to inhibit angiogenesis and prevent tumor growth. Vasculogenic mimicry (VM) in glioblastoma multiforme (GBM) poses a challenge, complicating anti-angiogenesis therapy. A novel drug, GN25 (3-[{1,4-dihydro-5,8-dimethoxy-1,4-dioxo-2-naphthalenyl}thio]-propanoic acid), can inhibit tumor formation. This study aims to investigate the microenvironmental effects and molecular mechanisms of GN25 in anti-angiogenesis and anti-VM. EXPERIMENTAL APPROACH MTT (3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide) assay was used to evaluate the cell viability of different concentrations of GN25 in human umbilical vein endothelial cells (HUVEC) and Uppsala 87 malignant glioma (U87MG) cells. Functional assays were used to investigate the effects of GN25 on angiogenesis-related processes, whereas gelatin zymography, enzyme-linked immunosorbent assays, and Western blotting were utilized to assess the influence on matrix metalloproteinase (MMP)-2 and vascular endothelial growth factor (VEGF) secretion and related signaling pathways. KEY RESULTS GN25 suppressed migration, wound healing, and tube formation in HUVECs and disrupted angiogenesis in a rat aorta ring and zebrafish embryo model. GN25 dose-dependently reduced phosphatidylinositol 3-kinase/AKT and inhibited MMP-2/VEGF secretion in HUVECs. In U87MG cells, GN25 inhibited migration, wound healing, and VM, accompanied by a decrease in MMP-2 and VEGF secretion. The results indicate that GN25 effectively inhibits angiogenesis and VM formation in HUVECs and U87MG cells without affecting preexisting vascular structures. CONCLUSION AND IMPLICATIONS This study elaborated GN25's potential as an anti-angiogenic agent by elucidating its inhibitory effects on classical angiogenesis. VM provides valuable insights for developing novel therapeutic strategies against tumor progression and angiogenesis-related diseases. These results indicate the potential of GN25 as a promising candidate for angiogenesis-related diseases.
Collapse
Affiliation(s)
- Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan; Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Long Chang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - San-Nan Yang
- Department of Pediatrics, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Chen-Ling Yu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Fang-Yu Tung
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Hsiao-Mei Kuo
- Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833301, Taiwan
| | - I-Chen Lu
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chang-Yi Wu
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan; Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Po-Chang Shih
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Wu-Fu Chen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan; Department of Neurosurgery, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833301, Taiwan.
| | - Nan-Fu Chen
- Division of Neurosurgery, Department of Surgery, Kaohsiung Armed Forces General Hospital, Kaohsiung 80284, Taiwan.
| |
Collapse
|
34
|
García-Arcos JM, Ziegler J, Grigolon S, Reymond L, Shajepal G, Cattin CJ, Lomakin A, Müller DJ, Ruprecht V, Wieser S, Voituriez R, Piel M. Rigidity percolation and active advection synergize in the actomyosin cortex to drive amoeboid cell motility. Dev Cell 2024:S1534-5807(24)00401-5. [PMID: 39047738 DOI: 10.1016/j.devcel.2024.06.023] [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: 06/28/2022] [Revised: 07/11/2023] [Accepted: 06/26/2024] [Indexed: 07/27/2024]
Abstract
Spontaneous locomotion is a common feature of most metazoan cells, generally attributed to the properties of actomyosin networks. This force-producing machinery has been studied down to the most minute molecular details, especially in lamellipodium-driven migration. Nevertheless, how actomyosin networks work inside contraction-driven amoeboid cells still lacks unifying principles. Here, using stable motile blebs from HeLa cells as a model amoeboid motile system, we imaged the dynamics of the actin cortex at the single filament level and revealed the co-existence of three distinct rheological phases. We introduce "advected percolation," a process where rigidity percolation and active advection synergize, spatially organizing the actin network's mechanical properties into a minimal and generic locomotion mechanism. Expanding from our observations on simplified systems, we speculate that this model could explain, down to the single actin filament level, how amoeboid cells, such as cancer or immune cells, can propel efficiently through complex 3D environments.
Collapse
Affiliation(s)
- Juan Manuel García-Arcos
- Institut Pierre Gilles de Gennes, PSL Research University, 6 rue Jean Calvin, 75005 Paris, France; Institut Curie, PSL Research University, CNRS UMR 144, Paris, France
| | - Johannes Ziegler
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain
| | - Silvia Grigolon
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France
| | - Loïc Reymond
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain; Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Gaurav Shajepal
- Institut Pierre Gilles de Gennes, PSL Research University, 6 rue Jean Calvin, 75005 Paris, France
| | - Cédric J Cattin
- Department of Biosystems Science and Engineering, ETH Zurich, 4056 Basel, Switzerland
| | - Alexis Lomakin
- Center for Pathobiochemistry and Genetics, Institute of Medical Chemistry, Medical University of Vienna, Währingerstraße 10, 1090 Vienna, Austria; Center for Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Währingerstraße 10, 1090 Vienna, Austria
| | - Daniel J Müller
- Department of Biosystems Science and Engineering, ETH Zurich, 4056 Basel, Switzerland
| | - Verena Ruprecht
- Center for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; ICREA, Pg. Lluis Companys 23, 08010 Barcelona, Spain
| | - Stefan Wieser
- ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Spain
| | - Raphael Voituriez
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France; Laboratoire de Physique Théorique de la Matière Condensée, CNRS/Sorbonne Université, 4 Place Jussieu, 75005 Paris, France.
| | - Matthieu Piel
- Institut Pierre Gilles de Gennes, PSL Research University, 6 rue Jean Calvin, 75005 Paris, France; Institut Curie, PSL Research University, CNRS UMR 144, Paris, France.
| |
Collapse
|
35
|
Bogale DE. The roles of FGFR3 and c-MYC in urothelial bladder cancer. Discov Oncol 2024; 15:295. [PMID: 39031286 PMCID: PMC11264706 DOI: 10.1007/s12672-024-01173-z] [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] [Received: 04/24/2024] [Accepted: 07/16/2024] [Indexed: 07/22/2024] Open
Abstract
Bladder cancer is one of the most frequently occurring cancers worldwide. At diagnosis, 75% of urothelial bladder cancer cases have non-muscle invasive bladder cancer while 25% have muscle invasive or metastatic disease. Aberrantly activated fibroblast growth factor receptor (FGFR)-3 has been implicated in the pathogenesis of bladder cancer. Activating mutations of FGFR3 are observed in around 70% of NMIBC cases and ~ 15% of MIBCs. Activated FGFR3 leads to ligand-independent receptor dimerization and activation of downstream signaling pathways that promote cell proliferation and survival. FGFR3 is an important therapeutic target in bladder cancer, and clinical studies have shown the benefit of FGFR inhibitors in a subset of bladder cancer patients. c-MYC is a well-known major driver of carcinogenesis and is one of the most commonly deregulated oncogenes identified in human cancers. Studies have shown that the antitumor effects of FGFR inhibition in FGFR3 dependent bladder cancer cells and other FGFR dependent cancers may be mediated through c-MYC, a key downstream effector of activated FGFR that is involved tumorigenesis. This review will summarize the current general understanding of FGFR signaling and MYC alterations in cancer, and the role of FGFR3 and MYC dysregulation in the pathogenesis of urothelial bladder cancer with the possible therapeutic implications.
Collapse
Affiliation(s)
- Dereje E Bogale
- School of Medicine, Department of Oncology, Addis Ababa University, Addis Ababa, Ethiopia.
| |
Collapse
|
36
|
Zhang Z, Yu Z, Liang D, Song K, Kong X, He M, Liao X, Huang Z, Kang A, Bai R, Ren Y. Roles of lipid droplets and related proteins in metabolic diseases. Lipids Health Dis 2024; 23:218. [PMID: 39030618 PMCID: PMC11264848 DOI: 10.1186/s12944-024-02212-y] [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: 04/12/2024] [Accepted: 07/11/2024] [Indexed: 07/21/2024] Open
Abstract
Lipid droplets (LDs), which are active organelles, derive from the monolayer membrane of the endoplasmic reticulum and encapsulate neutral lipids internally. LD-associated proteins like RAB, those in the PLIN family, and those in the CIDE family participate in LD formation and development, and they are active players in various diseases, organelles, and metabolic processes (i.e., obesity, non-alcoholic fatty liver disease, and autophagy). Our synthesis on existing research includes insights from the formation of LDs to their mechanisms of action, to provide an overview needed for advancing research into metabolic diseases and lipid metabolism.
Collapse
Affiliation(s)
- Zhongyang Zhang
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Zhenghang Yu
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Dianyuan Liang
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Ke Song
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Xiangxin Kong
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Ming He
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China
| | - Xinxin Liao
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Ziyan Huang
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Aijia Kang
- Institute of Hepatobiliary Pancreatic Intestinal Diseases, North Sichuan Medical College, Nanchong, 637000, China
| | - Rubing Bai
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China.
| | - Yixing Ren
- Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, South Maoyuan Road, Shunqing District, Nanchong, Sichuan Province, 637000, China.
- General Surgery, Chengdu XinHua Hospital Affiliated to North Sichuan Medical College, Chengdu, 610000, China.
| |
Collapse
|
37
|
Hossain MNB, Adnan A. Mechanical characterization of spectrin at the molecular level. Sci Rep 2024; 14:16631. [PMID: 39025938 PMCID: PMC11258356 DOI: 10.1038/s41598-024-67500-0] [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: 02/18/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024] Open
Abstract
Spectrin, a large cytoskeletal protein, consists of a heterodimeric structure comprising α and β subunits. Here, we have studied the mechanics of spectrin filament as a major constituent of dendrites and dendritic spines. Given the intricate biological details and compact biological construction of spectrin, we've developed a constitutive model of spectrin that describes its continuous deformation over three distinct stages and it's progressive failure mechanisms. Our model closely predicts both the force at which uncoiling begins and the ultimate force at which spectrin fails, measuring approximately 93 ~ 100 pN. Remarkably, our predicted failure force closely matches the findings from AFM experiments focused on the uncoiling of spectrin repeats, which reported a force of 90 pN. Our theoretical model proposes a plausible pathway for the potential failure of dendrites and the intricate connection between strain and strain rate. These findings deepen our understanding of how spectrin can contribute to traumatic brain injury risk analysis.
Collapse
Affiliation(s)
- Md Nahian Bin Hossain
- Department of Mechanical and Aerospace Engineering, The University of Texas at Arlington (UTA), Arlington, TX, USA
| | - Ashfaq Adnan
- Department of Mechanical and Aerospace Engineering, The University of Texas at Arlington (UTA), Arlington, TX, USA.
| |
Collapse
|
38
|
Master K, El Khalki L, Bayachou M, Sossey-Alaoui K. Role of WAVE3 as an of actin binding protein in the pathology of triple negative breast cancer. Cytoskeleton (Hoboken) 2024. [PMID: 39021344 DOI: 10.1002/cm.21898] [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: 02/20/2024] [Revised: 07/08/2024] [Accepted: 07/10/2024] [Indexed: 07/20/2024]
Abstract
Breast cancer, a prevalent global health concern, has sparked extensive research efforts, particularly focusing on triple negative breast cancer (TNBC), a subtype lacking estrogen receptor (ER), progesterone receptor, and epidermal growth factor receptor. TNBC's aggressive nature and resistance to hormone-based therapies heightens the risk of tumor progression and recurrence. Actin-binding proteins, specifically WAVE3 from the Wiskott-Aldrich syndrome protein (WASP) family, have emerged as major drivers in understanding TNBC biology. This review delves into the intricate molecular makeup of TNBC, shedding light on actin's fundamental role in cellular processes. Actin, a structural element in the cytoskeleton, regulates various cellular pathways essential for homeostasis. Its dynamic nature enables functions such as cell migration, motility, intracellular transport, cell division, and signal transduction. Actin-binding proteins, including WAVE3, play pivotal roles in these processes. WAVE3, a member of the WASP family, remains the focus of this review due to its potential involvement in TNBC progression. While actin-binding proteins are studied for their roles in healthy cellular cycles, their significance in TNBC remains underexplored. This review aims to discuss WAVE3's impact on TNBC, exploring its molecular makeup, functions, and significance in tumor progression. The intricate structure of WAVE3, featuring elements like the verprolin-cofilin-acidic domain and regulatory elements, plays a crucial role in regulating actin dynamics. Dysregulation of WAVE3 in TNBC has been linked to enhanced cell migration, invasion, extracellular matrix remodeling, epithelial-mesenchymal transition, tumor proliferation, and therapeutic resistance. Understanding the role of actin-binding proteins in cancer biology has potential clinical implications, making them potential prognostic biomarkers and promising therapeutic targets. The review emphasizes the need for further research into actin-binding proteins' clinical applications, diagnostic value, and therapeutic interventions. In conclusion, this comprehensive review explores the complex interplay between actin and actin-binding proteins, with special emphasis on WAVE3, in the context of TNBC. By unraveling the molecular intricacies, structural characteristics, and functional significance, the review paves the way for future research directions, clinical applications, and potential therapeutic strategies in the challenging landscape of TNBC.
Collapse
Affiliation(s)
- Kruyanshi Master
- Department of Chemistry, Cleveland State University, Cleveland, Ohio, USA
| | - Lamyae El Khalki
- MetroHealth System, Cleveland, Ohio, USA
- Case Western Reserve University, Cleveland, Ohio, USA
- Case Comprehensive Cancer Center, Cleveland, Ohio, USA
| | - Mekki Bayachou
- Department of Chemistry, Cleveland State University, Cleveland, Ohio, USA
| | - Khalid Sossey-Alaoui
- MetroHealth System, Cleveland, Ohio, USA
- Case Western Reserve University, Cleveland, Ohio, USA
- Case Comprehensive Cancer Center, Cleveland, Ohio, USA
| |
Collapse
|
39
|
Perrier A, Guiglielmoni N, Naquin D, Gorrichon K, Thermes C, Lameiras S, Dammermann A, Schiffer PH, Brunstein M, Canman JC, Dumont J. Maternal inheritance of functional centrioles in two parthenogenetic nematodes. Nat Commun 2024; 15:6042. [PMID: 39025889 PMCID: PMC11258339 DOI: 10.1038/s41467-024-50427-5] [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: 08/14/2023] [Accepted: 07/09/2024] [Indexed: 07/20/2024] Open
Abstract
Centrioles are the core constituent of centrosomes, microtubule-organizing centers involved in directing mitotic spindle assembly and chromosome segregation in animal cells. In sexually reproducing species, centrioles degenerate during oogenesis and female meiosis is usually acentrosomal. Centrioles are retained during male meiosis and, in most species, are reintroduced with the sperm during fertilization, restoring centriole numbers in embryos. In contrast, the presence, origin, and function of centrioles in parthenogenetic species is unknown. We found that centrioles are maternally inherited in two species of asexual parthenogenetic nematodes and identified two different strategies for maternal inheritance evolved in the two species. In Rhabditophanes diutinus, centrioles organize the poles of the meiotic spindle and are inherited by both the polar body and embryo. In Disploscapter pachys, the two pairs of centrioles remain close together and are inherited by the embryo only. Our results suggest that maternally-inherited centrioles organize the embryonic spindle poles and act as a symmetry-breaking cue to induce embryo polarization. Thus, in these parthenogenetic nematodes, centrioles are maternally-inherited and functionally replace their sperm-inherited counterparts in sexually reproducing species.
Collapse
Affiliation(s)
- Aurélien Perrier
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France
| | - Nadège Guiglielmoni
- Worm∼lab, Institute for Zoology, University of Cologne, Cologne, NRW, Germany
| | - Delphine Naquin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Kevin Gorrichon
- Centre de Référence, d'Innovation, d'eXpertise et de transfert (CRefIX), US 039 CEA/INRIA/INSERM, Evry, France
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, Direction de la Recherche Fondamentale, CEA, Evry, France
| | - Claude Thermes
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France
| | - Sonia Lameiras
- Institut Curie, PSL University, ICGex Next-Generation Sequencing Platform, 75005, Paris, France
| | - Alexander Dammermann
- Max Perutz Labs, Vienna Biocenter Campus (VBC), 1030, Vienna, Austria
- University of Vienna, Center for Molecular Biology, Department of Microbiology, Immunobiology and Genetics, 1030, Vienna, Austria
| | - Philipp H Schiffer
- Worm∼lab, Institute for Zoology, University of Cologne, Cologne, NRW, Germany
| | - Maia Brunstein
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, F-75012, Paris, France
| | - Julie C Canman
- Columbia University Irving Medical Center; Department of Pathology and Cell Biology, New York, NY, 10032, USA
| | - Julien Dumont
- Université Paris Cité, CNRS, Institut Jacques Monod, F-75013, Paris, France.
| |
Collapse
|
40
|
Ouellette J, Lacoste B. Rock2 heterozygosity improves recognition memory and endothelial function in a mouse model of 16p11.2 deletion autism syndrome. Neurosci Lett 2024; 837:137904. [PMID: 39029613 DOI: 10.1016/j.neulet.2024.137904] [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: 07/06/2024] [Revised: 07/15/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Rho-associated protein kinase-2 (ROCK2) is a critical player in many cellular processes and was incriminated in cardiovascular and neurological disorders. Recent evidence has shown that non-selective pharmacological blockage of ROCKs ameliorates behavioral alterations in a mouse model of 16p11.2 haploinsufficiency. We had revealed that 16p11.2-deficient mice also display cerebrovascular abnormalities, including endothelial dysfunction. To investigate whether genetic blockage of ROCK2 also exerts beneficial effects on cognition and angiogenesis, we generated mice with both 16p11.2 and Rock2 haploinsufficiency (16p11.2df/+;Rock2+/-). We find that Rock2 heterozygosity on a 16p11.2df/+ background significantly improved recognition memory. Furthermore, brain endothelial cells from 16p11.2df/+;Rock2+/- mice display improved angiogenic capacity compared to cells from 16p11.2df/+ littermates. Overall, this study implicates Rock2 gene as a modulator of 16p11.2-associated alterations, highlighting its potential as a target for treatment of autism spectrum disorders.
Collapse
Affiliation(s)
- Julie Ouellette
- Neuroscience Program, The Ottawa Hospital Research Institute, Ottawa, ON, Canada; Cellular & Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Baptiste Lacoste
- Neuroscience Program, The Ottawa Hospital Research Institute, Ottawa, ON, Canada; Cellular & Molecular Medicine, University of Ottawa, Ottawa, ON, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada.
| |
Collapse
|
41
|
Melogno I, Takatani S, Llanos P, Goncalves C, Kodera C, Martin M, Lionnet C, Uyttewaal M, Pastuglia M, Trehin C, Bouchez D, Dumais J, Hamant O. A transient radial cortical microtubule array primes cell division in Arabidopsis. Proc Natl Acad Sci U S A 2024; 121:e2320470121. [PMID: 38990951 PMCID: PMC11260093 DOI: 10.1073/pnas.2320470121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 05/23/2024] [Indexed: 07/13/2024] Open
Abstract
Although the formation of new walls during plant cell division tends to follow maximal tensile stress direction, analyses of individual cells over time reveal a much more variable behavior. The origin of such variability as well as the exact role of interphasic microtubule behavior before cell division have remained mysterious so far. To approach this question, we took advantage of the Arabidopsis stem, where the tensile stress pattern is both highly anisotropic and stable. Although cortical microtubules (CMTs) generally align with maximal tensile stress, we detected a specific time window, ca. 3 h before cell division, where cells form a radial pattern of CMTs. This microtubule array organization preceded preprophase band (PPB) formation, a transient CMT array predicting the position of the future division plane. It was observed under different growth conditions and was not related to cell geometry or polar auxin transport. Interestingly, this cortical radial pattern correlated with the well-documented increase of cytoplasmic microtubule accumulation before cell division. This radial organization was prolonged in cells of the trm678 mutant, where CMTs are unable to form a PPB. Whereas division plane orientation in trm678 is noisier, we found that cell division symmetry was in contrast less variable between daughter cells. We propose that this "radial step" reflects a trade-off in robustness for two essential cell division attributes: symmetry and orientation. This involves a "reset" stage in G2, where an increased cytoplasmic microtubule accumulation transiently disrupts CMT alignment with tissue stress.
Collapse
Affiliation(s)
- Isaty Melogno
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
| | - Shogo Takatani
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
- Department of Biological Science, Graduate School of Science, Nagoya University, Nagoya464-8602, Japan
| | - Paula Llanos
- Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Viña del Mar2520000, Chile
| | - Coralie Goncalves
- Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles78000, France
| | - Chie Kodera
- Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles78000, France
| | - Marjolaine Martin
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
| | - Claire Lionnet
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
| | - Magalie Uyttewaal
- Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles78000, France
| | - Martine Pastuglia
- Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles78000, France
| | - Christophe Trehin
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
| | - David Bouchez
- Université Paris-Saclay, INRAE, AgroParisTech, Institute Jean-Pierre Bourgin for Plant Sciences (IJPB), Versailles78000, France
| | - Jacques Dumais
- Faculty of Engineering and Sciences, Universidad Adolfo Ibáñez, Viña del Mar2520000, Chile
| | - Olivier Hamant
- Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Institut national de recherche pour l’agriculture, l’alimentation et l’environnement (INRAE), CNRS, 69364Lyon Cedex 07, France
| |
Collapse
|
42
|
Cavini IA, Fontes MG, Zeraik AE, Lopes JLS, Araujo APU. Novel lipid-interaction motifs within the C-terminal domain of Septin10 from Schistosoma mansoni. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2024; 1866:184371. [PMID: 39025256 DOI: 10.1016/j.bbamem.2024.184371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 07/05/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Septins are cytoskeletal proteins and their interaction with membranes is crucial for their role in various cellular processes. Septins have polybasic regions (PB1 and PB2) which are important for lipid interaction. Earlier, we and others have highlighted the role of the septin C-terminal domain (CTD) to membrane interaction. However, detailed information on residues/group of residues important for such feature is lacking. In this study, we investigate the lipid-binding profile of Schistosoma mansoni Septin10 (SmSEPT10) using PIP strip and Langmuir monolayer adsorption assays. Our findings highlight the CTD as the primary domain responsible for lipid interaction in SmSEPT10, showing binding to phosphatidylinositol phosphates. SmSEPT10 CTD contains a conserved polybasic region (PB3) present in both animals and fungi septins, and a Lys (K367) within its putative amphipathic helix (AH) that we demonstrate as important for lipid binding. PB3 deletion or mutation of this Lys (K367A) strongly impairs lipid interaction. Remarkably, we observe that the AH within a construct lacking the final 43 amino acid residues is insufficient for lipid binding. Furthermore, we investigate the homocomplex formed by SmSEPT10 CTD in solution by cross-linking experiments, CD spectroscopy, SEC-MALS and SEC-SAXS. Taken together, our studies define the lipid-binding region in SmSEPT10 and offer insights into the molecular basis of septin-membrane binding. This information is particularly relevant for less-studied non-human septins, such as SmSEPT10.
Collapse
Affiliation(s)
- Italo A Cavini
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP 13560-970, Brazil; School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040-903, Brazil
| | - Marina G Fontes
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP 13560-970, Brazil; Department of Pharmaceutical Technology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP 05508-000, Brazil
| | - Ana Eliza Zeraik
- Laboratory of Chemistry and Function of Proteins and Peptides, Center for Biosciences and Biotechnology, North Fluminense State University Darcy Ribeiro, Campos dos Goytacazes, RJ 28013-602, Brazil
| | - Jose L S Lopes
- Laboratory of Molecular Biophysics, Department of Physics, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040-901, Brazil
| | - Ana Paula U Araujo
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP 13560-970, Brazil.
| |
Collapse
|
43
|
Bensel BM, Previs SB, Bookwalter C, Trybus KM, Walcott S, Warshaw DM. Kinesin-1-transported liposomes prefer to go straight in 3D microtubule intersections by a mechanism shared by other molecular motors. Proc Natl Acad Sci U S A 2024; 121:e2407330121. [PMID: 38980901 PMCID: PMC11260143 DOI: 10.1073/pnas.2407330121] [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: 04/20/2024] [Accepted: 05/24/2024] [Indexed: 07/11/2024] Open
Abstract
Kinesin-1 ensembles maneuver vesicular cargoes through the three-dimensional (3D) intracellular microtubule (MT) network. To define how such cargoes navigate MT intersections, we first determined how many kinesins from an ensemble on a lipid-based cargo simultaneously engage a MT, and then determined the directional outcomes (straight, turn, terminate) for liposome cargoes at perpendicular MT intersections. Run lengths of 350-nm diameter liposomes decorated with up to 20, constitutively active, truncated kinesin-1 KIF5B (K543) were longer than single motor transported cargo, suggesting multiple motor engagement. However, detachment forces of lipid-coated beads with ~20 kinesins, measured using an optical trap, showed no more than three simultaneously engaged motors, with a single engaged kinesin predominating, indicating anticooperative MT binding. At two-dimensional (2D) and 3D in vitro MT intersections, liposomes frequently paused (~2 s), suggesting kinesins simultaneously bind both MTs and engage in a tug-of-war. Liposomes showed no directional outcome bias in 2D (1.1 straight:turn ratio) but preferentially went straight (1.8 straight:turn ratio) in 3D intersections. To explain these data, we developed a mathematical model of liposome transport incorporating the known mechanochemistry of kinesins, which diffuse on the liposome surface, and have stiff tails in both compression and extension that impact how motors engage the intersecting MTs. Our model predicts the ~3 engaged motor limit observed in the optical trap and the bias toward going straight in 3D intersections. The striking similarity of these results to our previous study of liposome transport by myosin Va suggests a "universal" mechanism by which cargoes navigate 3D intersections.
Collapse
Affiliation(s)
- Brandon M. Bensel
- Department of Molecular Physiology and Biophysics, University of Vermont Larner College of Medicine, Burlington, VT05405
| | - Samantha Beck Previs
- Department of Molecular Physiology and Biophysics, University of Vermont Larner College of Medicine, Burlington, VT05405
| | - Carol Bookwalter
- Department of Molecular Physiology and Biophysics, University of Vermont Larner College of Medicine, Burlington, VT05405
| | - Kathleen M. Trybus
- Department of Molecular Physiology and Biophysics, University of Vermont Larner College of Medicine, Burlington, VT05405
| | - Sam Walcott
- Department of Mathematical Sciences, and Bioinformatics and Computational Biology, Worcester Polytechnic Institute, Worcester, MA01609
| | - David M. Warshaw
- Department of Molecular Physiology and Biophysics, University of Vermont Larner College of Medicine, Burlington, VT05405
| |
Collapse
|
44
|
Ismayilzada N, Tarar C, Dabbagh SR, Tokyay BK, Dilmani SA, Sokullu E, Abaci HE, Tasoglu S. Skin-on-a-chip technologies towards clinical translation and commercialization. Biofabrication 2024; 16:042001. [PMID: 38964314 DOI: 10.1088/1758-5090/ad5f55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 07/04/2024] [Indexed: 07/06/2024]
Abstract
Skin is the largest organ of the human body which plays a critical role in thermoregulation, metabolism (e.g. synthesis of vitamin D), and protection of other organs from environmental threats, such as infections, microorganisms, ultraviolet radiation, and physical damage. Even though skin diseases are considered to be less fatal, the ubiquity of skin diseases and irritation caused by them highlights the importance of skin studies. Furthermore, skin is a promising means for transdermal drug delivery, which requires a thorough understanding of human skin structure. Current animal andin vitrotwo/three-dimensional skin models provide a platform for disease studies and drug testing, whereas they face challenges in the complete recapitulation of the dynamic and complex structure of actual skin tissue. One of the most effective methods for testing pharmaceuticals and modeling skin diseases are skin-on-a-chip (SoC) platforms. SoC technologies provide a non-invasive approach for examining 3D skin layers and artificially creating disease models in order to develop diagnostic or therapeutic methods. In addition, SoC models enable dynamic perfusion of culture medium with nutrients and facilitate the continuous removal of cellular waste to further mimic thein vivocondition. Here, the article reviews the most recent advances in the design and applications of SoC platforms for disease modeling as well as the analysis of drugs and cosmetics. By examining the contributions of different patents to the physiological relevance of skin models, the review underscores the significant shift towards more ethical and efficient alternatives to animal testing. Furthermore, it explores the market dynamics ofin vitroskin models and organ-on-a-chip platforms, discussing the impact of legislative changes and market demand on the development and adoption of these advanced research tools. This article also identifies the existing obstacles that hinder the advancement of SoC platforms, proposing directions for future improvements, particularly focusing on the journey towards clinical adoption.
Collapse
Affiliation(s)
- Nilufar Ismayilzada
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
| | - Ceren Tarar
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
| | | | - Begüm Kübra Tokyay
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
| | - Sara Asghari Dilmani
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
| | - Emel Sokullu
- School of Medicine, Koç University, Istanbul 34450, Turkey
| | - Hasan Erbil Abaci
- Department of Dermatology, Columbia University, New York City, NY, United States of America
| | - Savas Tasoglu
- Department of Mechanical Engineering, Koç University, Istanbul 34450, Turkey
- Boğaziçi Institute of Biomedical Engineering, Boğaziçi University, Istanbul 34684, Turkey
- Koç University Research Center for Translational Medicine, Koç University, Istanbul 34450, Turkey
- Koç University Arçelik Research Center for Creative Industries (KUAR), Koç University, Istanbul 34450, Turkey
| |
Collapse
|
45
|
Wang W, Shi Z, Zhang D, Hou W, Ma H, Liu X, Zhang Y, Zhu J, Yang Z, Jia B, Xu Q, Zhang Y, Zhang M. Kinesin motor KIF16A regulates microtubule stability and actin-dependent spindle migration in mouse oocyte meiosis. FASEB J 2024; 38:e23750. [PMID: 38888878 DOI: 10.1096/fj.202400989r] [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: 05/02/2024] [Revised: 05/22/2024] [Accepted: 06/06/2024] [Indexed: 06/20/2024]
Abstract
Kif16A, a member of the kinesin-3 family of motor proteins, has been shown to play crucial roles in inducing mitotic arrest, apoptosis, and mitotic cell death. However, its roles during oocyte meiotic maturation have not been fully defined. In this study, we report that Kif16A exhibits unique accumulation on the spindle apparatus and colocalizes with microtubule fibers during mouse oocyte meiotic maturation. Targeted depletion of Kif16A using gene-targeting siRNA disrupts the progression of the meiotic cell cycle. Furthermore, Kif16A depletion leads to aberrant spindle assembly and chromosome misalignment in oocytes. Our findings also indicate that Kif16A depletion reduces tubulin acetylation levels and compromises microtubule resistance to depolymerizing drugs, suggesting its crucial role in microtubule stability maintenance. Notably, we find that the depletion of Kif16A results in a notably elevated incidence of defective kinetochore-microtubule attachments and the absence of BubR1 localization at kinetochores, suggesting a critical role for Kif16A in the activation of the spindle assembly checkpoint (SAC) activity. Additionally, we observe that Kif16A is indispensable for proper actin filament distribution, thereby impacting spindle migration. In summary, our findings demonstrate that Kif16A plays a pivotal role in regulating microtubule and actin dynamics crucial for ensuring both spindle assembly and migration during mouse oocyte meiotic maturation.
Collapse
Affiliation(s)
- Wei Wang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Zhenhu Shi
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Dandan Zhang
- Department of Reproductive Medicine, General Hospital of Wanbei Coal Group, Key Laboratory of Reproductive Medicine and Embryo of Suzhou City, Suzhou, China
| | - Wenwen Hou
- Center of Reproductive Medicine, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, China
| | - Huijie Ma
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Xinyu Liu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Yongteng Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Jinbao Zhu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Zaishan Yang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Bo Jia
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Qimei Xu
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Yunhai Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| | - Mianqun Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Key Laboratory of Local Livestock and Poultry Genetical Resource Conservation and Breeding of Anhui Province, Hefei, China
| |
Collapse
|
46
|
Li ZR, Wang YY, Wang ZH, Qin QL, Huang C, Shi GS, He HY, Deng YH, He XY, Zhao XM. The positive role of transforming growth factor-β1 in ischemic stroke. Cell Signal 2024; 121:111301. [PMID: 39019338 DOI: 10.1016/j.cellsig.2024.111301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/05/2024] [Accepted: 07/12/2024] [Indexed: 07/19/2024]
Abstract
Ischemic stroke is one of the most disabling and fatal diseases around the world. The damaged brain tissues will undergo excessive autophagy, vascular endothelial cells injury, blood-brain barrier (BBB) impairment and neuroinflammation after ischemic stroke. However, there is no unified viewpoint on the underlying mechanism of brain damage. Transforming growth factor-β1 (TGF-β1), as a multi-functional cytokine, plays a crucial role in the intricate pathological processes and helps maintain the physiological homeostasis of brain tissues through various signaling pathways after ischemic stroke. In this review, we summarize the protective role of TGF-β1 in autophagic flux, BBB, vascular remodeling, neuroinflammation and other aspects after ischemic stroke. Based on the review, we believe that TGF-β1 could serve as a key target for treating ischemic stroke.
Collapse
Affiliation(s)
- Zi-Rong Li
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Yong-Yan Wang
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Zi-Han Wang
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Qi-Lin Qin
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Cheng Huang
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Guang-Sen Shi
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Hong-Yun He
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming, China.
| | - Yi-Hao Deng
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Xiu-Ying He
- Department of Anesthesiology, Institute of Neurological Disease, West China Hospital, Sichuan University, Chengdu, China.
| | - Xiao-Ming Zhao
- Faculty of Medicine, Kunming University of Science and Technology, Kunming, China; Anning First People's Hospital Affiliated to Kunming University of Science and Technology, Kunming, China.
| |
Collapse
|
47
|
Miyata H, Shimada K, Kaneda Y, Ikawa M. Development of functional spermatozoa in mammalian spermiogenesis. Development 2024; 151:dev202838. [PMID: 39036999 DOI: 10.1242/dev.202838] [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] [Indexed: 07/23/2024]
Abstract
Infertility is a global health problem affecting one in six couples, with 50% of cases attributed to male infertility. Spermatozoa are male gametes, specialized cells that can be divided into two parts: the head and the flagellum. The head contains a vesicle called the acrosome that undergoes exocytosis and the flagellum is a motility apparatus that propels the spermatozoa forward and can be divided into two components, axonemes and accessory structures. For spermatozoa to fertilize oocytes, the acrosome and flagellum must be formed correctly. In this Review, we describe comprehensively how functional spermatozoa develop in mammals during spermiogenesis, including the formation of acrosomes, axonemes and accessory structures by focusing on analyses of mouse models.
Collapse
Affiliation(s)
- Haruhiko Miyata
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Keisuke Shimada
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuki Kaneda
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
- The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan
- Center for Infectious Disease Education and Research, Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
48
|
Wang X, Qu L, Chen J, Hu K, Zhou Z, Zhang J, An Y, Zheng J. Rhoptry proteins affect the placental barrier in the context of Toxoplasma gondii infection: Signaling pathways and functions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116567. [PMID: 38850700 DOI: 10.1016/j.ecoenv.2024.116567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/21/2024] [Accepted: 06/05/2024] [Indexed: 06/10/2024]
Abstract
Toxoplasma gondii is an opportunistic and pathogenic obligate intracellular parasitic protozoan that is widespread worldwide and can infect most warm-blooded animals, seriously endangering human health and affecting livestock production. Toxoplasmosis caused by T. gondii infection has different clinical manifestations, which are mainly determined by the virulence of T. gondii and host differences. Among the manifestations of this condition, abortion, stillbirth, and fetal malformation can occur if a woman is infected with T. gondii in early pregnancy. Here, we discuss how the T. gondii rhoptry protein affects host pregnancy outcomes and speculate on the related signaling pathways involved. The effects of rhoptry proteins of T. gondii on the placental barrier are complex. Rhoptry proteins not only regulate interferon-regulated genes (IRGs) to ensure the survival of parasites in activated cells but also promote the spread of worms in tissues and the invasive ability of the parasites. The functions of these rhoptry proteins and the associated signaling pathways highlight relevant mechanisms by which Toxoplasma crosses the placental barrier and influences fetal development and will guide future studies to uncover the complexity of the host-pathogen interactions.
Collapse
Affiliation(s)
- Xinlei Wang
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Lai Qu
- Department of Intensive Care Unit, First Hospital of Jilin University, Changchun, China
| | - Jie Chen
- Institute of Theoretical Chemistry, Jilin University, Changchun, China
| | - Kaisong Hu
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Zhengjie Zhou
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Jiaqi Zhang
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yiming An
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Jingtong Zheng
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China.
| |
Collapse
|
49
|
Famta P, Shah S, Vambhurkar G, Pandey G, Bagasariya D, Kumar KC, Prasad SB, Shinde A, Wagh S, Srinivasarao DA, Kumar R, Khatri DK, Asthana A, Srivastava S. Amelioration of breast cancer therapies through normalization of tumor vessels and microenvironment: paradigm shift to improve drug perfusion and nanocarrier permeation. Drug Deliv Transl Res 2024:10.1007/s13346-024-01669-9. [PMID: 39009931 DOI: 10.1007/s13346-024-01669-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2024] [Indexed: 07/17/2024]
Abstract
Breast cancer (BC) is the most commonly diagnosed cancer among women. Chemo-, immune- and photothermal therapies are employed to manage BC. However, the tumor microenvironment (TME) prevents free drugs and nanocarriers (NCs) from entering the tumor premises. Formulation scientists rely on enhanced permeation and retention (EPR) to extravasate NCs in the TME. However, recent research has demonstrated the inconsistent nature of EPR among different patients and tumor types. In addition, angiogenesis, high intra-tumor fluid pressure, desmoplasia, and high cell and extracellular matrix density resist the accumulation of NCs in the TME. In this review, we discuss TME normalization as an approach to improve the penetration of drugs and NCSs in the tumor premises. Strategies such as normalization of tumor vessels, reversal of hypoxia, alleviation of high intra-tumor pressure, and infiltration of lymphocytes for the reversal of therapy failure have been discussed in this manuscript. Strategies to promote the infiltration of anticancer immune cells in the TME after vascular normalization have been discussed. Studies strategizing time points to administer TME-normalizing agents are highlighted. Mechanistic pathways controlling the angiogenesis and normalization processes are discussed along with the studies. This review will provide greater tumor-targeting insights to the formulation scientists.
Collapse
Affiliation(s)
- Paras Famta
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Saurabh Shah
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Ganesh Vambhurkar
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Giriraj Pandey
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Deepkumar Bagasariya
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Kondasingh Charan Kumar
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Sajja Bhanu Prasad
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Akshay Shinde
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Suraj Wagh
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Dadi A Srinivasarao
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India
| | - Rahul Kumar
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Dharmendra Kumar Khatri
- Department of Biological Sciences, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
- Molecular and Cellular Biology Laboratory, Department of Pharmacology, Nims Institute of Pharmacy, Nims University, Jaipur, Rajasthan, India
| | - Amit Asthana
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Saurabh Srivastava
- Pharmaceutical Innovation and Translational Research Lab (PITRL), Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Balanagar, Hyderabad, 500037, Telangana, India.
| |
Collapse
|
50
|
Zhang Y, Meng F, Zhao T, Du J, Li N, Qiao X, Yao Y, Wu D, Peng F, Wang D, Yang S, Shi J, Liu R, Zhou W, Li L, Hao A. Melatonin improves mouse oocyte quality from 2-ethylhexyl diphenyl phosphate-induced toxicity by enhancing mitochondrial function. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116559. [PMID: 38865937 DOI: 10.1016/j.ecoenv.2024.116559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/14/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024]
Abstract
2-Ethylhexyl diphenyl phosphate (EHDPP) is a representative organophosphorus flame retardant (OPFR) that has garnered attention due to its widespread use and potential adverse effects. EHDPP exhibits cytotoxicity, genotoxicity, developmental toxicity, and endocrine disruption. However, the toxicity of EHDPP in mammalian oocytes and the underlying mechanisms remain poorly understood. Melatonin is a natural free radical scavenger that has demonstrated cytoprotective properties. In this study, we investigated the effect of EHDPP on mouse oocytes in vitro culture system and evaluated the rescue effect of melatonin on oocytes exposed to EHDPP. Our results indicated that EHDPP disrupted oocyte maturation, resulting in the majority of oocytes arrested at the metaphase I (MI) stage, accompanied by cytoskeletal damage and elevated levels of reactive oxygen species (ROS). Nevertheless, melatonin supplementation partially rescued EHDPP-induced mouse oocyte maturation impairment. Results of single-cell RNA sequencing (scRNA-seq) analysis elucidated potential mechanisms underlying these protective effects. According to the results of scRNA-seq, we conducted further tests and found that EHDPP primarily disrupts mitochondrial distribution and function, kinetochore-microtubule (K-MT) attachment, DNA damage, apoptosis, and histone modification, which were rescued upon the supplementation of melatonin. This study reveals the mechanisms of EHDPP on female reproduction and indicates the efficacy of melatonin as a therapeutic intervention for EHDPP-induced defects in mouse oocytes.
Collapse
Affiliation(s)
- Yanan Zhang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Fei Meng
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Tiantian Zhao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Jingyi Du
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Naigang Li
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Xinghui Qiao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yuan Yao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Dong Wu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Fan Peng
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Dongshuang Wang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Shuang Yang
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Jiaming Shi
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Ruoxi Liu
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Wenjuan Zhou
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Lei Li
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
| | - Aijun Hao
- Key Laboratory for Experimental Teratology of Ministry of Education, Shandong Key Laboratory of Mental Disorders, Department of Anatomy and Histoembryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
| |
Collapse
|