1
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Wilken MB, Fonar G, Qiu R, Bennett L, Tober J, Nations C, Pavani G, Tsao V, Garifallou J, Petit C, Maguire JA, Gagne A, Okoli N, Gadue P, Chou ST, French DL, Speck NA, Thom CS. Tropomyosin 1 deficiency facilitates cell state transitions and enhances hemogenic endothelial cell specification during hematopoiesis. Stem Cell Reports 2024; 19:1264-1276. [PMID: 39214082 DOI: 10.1016/j.stemcr.2024.08.001] [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: 10/09/2023] [Revised: 07/29/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
Tropomyosins coat actin filaments to impact actin-related signaling and cell morphogenesis. Genome-wide association studies have linked Tropomyosin 1 (TPM1) with human blood trait variation. TPM1 has been shown to regulate blood cell formation in vitro, but it remains unclear how or when TPM1 affects hematopoiesis. Using gene-edited induced pluripotent stem cell (iPSC) model systems, we found that TPM1 knockout augmented developmental cell state transitions and key signaling pathways, including tumor necrosis factor alpha (TNF-α) signaling, to promote hemogenic endothelial (HE) cell specification and hematopoietic progenitor cell (HPC) production. Single-cell analyses revealed decreased TPM1 expression during human HE specification, suggesting that TPM1 regulated in vivo hematopoiesis via similar mechanisms. Analyses of a TPM1 gene trap mouse model showed that TPM1 deficiency enhanced HE formation during embryogenesis, without increasing the number of hematopoietic stem cells. These findings illuminate novel effects of TPM1 on developmental hematopoiesis.
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Affiliation(s)
- Madison B Wilken
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Gennadiy Fonar
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Rong Qiu
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Laura Bennett
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Joanna Tober
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Catriana Nations
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Giulia Pavani
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Victor Tsao
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA
| | - James Garifallou
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Chayanne Petit
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Nkemdilim Okoli
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stella T Chou
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Nancy A Speck
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Christopher S Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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2
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Wang ZX, Lin X, Cao J, Liu YW, Luo ZW, Rao SS, Wang Q, Wang YY, Chen CY, Zhu GQ, Li FXZ, Tan YJ, Hu Y, Yin H, Li YY, He ZH, Liu ZZ, Yuan LQ, Zhou Y, Wang ZG, Xie H. Young osteocyte-derived extracellular vesicles facilitate osteogenesis by transferring tropomyosin-1. J Nanobiotechnology 2024; 22:208. [PMID: 38664789 PMCID: PMC11046877 DOI: 10.1186/s12951-024-02367-x] [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: 10/12/2023] [Accepted: 02/22/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Bone marrow mesenchymal stem cells (BMSCs) can undergo inadequate osteogenesis or excessive adipogenesis as they age due to changes in the bone microenvironment, ultimately resulting in decreased bone density and elevated risk of fractures in senile osteoporosis. This study aims to investigate the effects of osteocyte senescence on the bone microenvironment and its influence on BMSCs during aging. RESULTS Primary osteocytes were isolated from 2-month-old and 16-month-old mice to obtain young osteocyte-derived extracellular vesicles (YO-EVs) and senescent osteocyte-derived EVs (SO-EVs), respectively. YO-EVs were found to significantly increase alkaline phosphatase activity, mineralization deposition, and the expression of osteogenesis-related genes in BMSCs, while SO-EVs promoted BMSC adipogenesis. Neither YO-EVs nor SO-EVs exerted an effect on the osteoclastogenesis of primary macrophages/monocytes. Our constructed transgenic mice, designed to trace osteocyte-derived EV distribution, revealed abundant osteocyte-derived EVs embedded in the bone matrix. Moreover, mature osteoclasts were found to release osteocyte-derived EVs from bone slices, playing a pivotal role in regulating the functions of the surrounding culture medium. Following intravenous injection into young and elderly mouse models, YO-EVs demonstrated a significant enhancement of bone mass and biomechanical strength compared to SO-EVs. Immunostaining of bone sections revealed that YO-EV treatment augmented the number of osteoblasts on the bone surface, while SO-EV treatment promoted adipocyte formation in the bone marrow. Proteomics analysis of YO-EVs and SO-EVs showed that tropomyosin-1 (TPM1) was enriched in YO-EVs, which increased the matrix stiffness of BMSCs, consequently promoting osteogenesis. Specifically, the siRNA-mediated depletion of Tpm1 eliminated pro-osteogenic activity of YO-EVs both in vitro and in vivo. CONCLUSIONS Our findings suggested that YO-EVs played a crucial role in maintaining the balance between bone resorption and formation, and their pro-osteogenic activity declining with aging. Therefore, YO-EVs and the delivered TPM1 hold potential as therapeutic targets for senile osteoporosis.
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Affiliation(s)
- Zhen-Xing Wang
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China
| | - Xiao Lin
- The Second Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Jia Cao
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China
| | - Yi-Wei Liu
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Zhong-Wei Luo
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Shan-Shan Rao
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China
| | - Qiang Wang
- Department of Laboratory Medicine, Affiliated Zhejiang Hospital, Zhejiang University School of Medicine, Hangzhou, 310013, Zhejiang, China
| | - Yi-Yi Wang
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Chun-Yuan Chen
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China
| | - Guo-Qiang Zhu
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Fu-Xing-Zi Li
- The Second Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Yi-Juan Tan
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Yin Hu
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Hao Yin
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - You-You Li
- Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Ze-Hui He
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
| | - Zheng-Zhao Liu
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China
| | - Ling-Qing Yuan
- The Second Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Yong Zhou
- Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China
| | - Zheng-Guang Wang
- Third Xiangya Hospital, Central South University, Changsha, 410013, Hunan, China.
| | - Hui Xie
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
- Hunan Key Laboratory of Angmedicine, Changsha, 410008, Hunan, China.
- National Clinical Research Center for Geriatric Disorders (Xiangya Hospital), Changsha, 410008, Hunan, China.
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3
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Wang L, Liu C, Li L, Wei H, Wei W, Zhou Q, Chen Y, Meng T, Jiao R, Wang Z, Sun Q, Li W. RNF20 Regulates Oocyte Meiotic Spindle Assembly by Recruiting TPM3 to Centromeres and Spindle Poles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306986. [PMID: 38240347 PMCID: PMC10987117 DOI: 10.1002/advs.202306986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 12/02/2023] [Indexed: 04/04/2024]
Abstract
Previously a ring finger protein 20 (RNF20) is found to be essential for meiotic recombination and mediates H2B ubiquitination during spermatogenesis. However, its role in meiotic division is still unknown. Here, it is shown that RNF20 is localized at both centromeres and spindle poles, and it is required for oocyte acentrosomal spindle organization and female fertility. RNF20-depleted oocytes exhibit severely abnormal spindle and chromosome misalignment caused by defective bipolar organization. Notably, it is found that the function of RNF20 in spindle assembly is not dependent on its E3 ligase activity. Instead, RNF20 regulates spindle assembly by recruiting tropomyosin3 (TPM3) to both centromeres and spindle poles with its coiled-coil motif. The RNF20-TPM3 interaction is essential for acentrosomal meiotic spindle assembly. Together, the studies uncover a novel function for RNF20 in mediating TPM3 recruitment to both centromeres and spindle poles during oocyte spindle assembly.
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Affiliation(s)
- Liying Wang
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
| | - Chao Liu
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of ZoologyStem Cell and Regenerative Medicine Innovation InstituteChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Li Li
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
| | - Huafang Wei
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
| | - Wei Wei
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
| | - Qiuxing Zhou
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
| | - Yinghong Chen
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of ZoologyStem Cell and Regenerative Medicine Innovation InstituteChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Tie‐Gang Meng
- Guangzhou Key Laboratory of Metabolic Diseases and Reproductive HealthGuangdong‐Hong Kong Metabolism & Reproduction Joint LaboratoryReproductive Medicine CenterGuangdong Second Provincial General HospitalGuangzhou510317China
| | - Renjie Jiao
- The State Key Laboratory of Respiratory DiseaseGuangzhou Medical UniversityGuangzhouGuangdong510182China
| | - Zhen‐Bo Wang
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of ZoologyStem Cell and Regenerative Medicine Innovation InstituteChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
| | - Qing‐Yuan Sun
- Guangzhou Key Laboratory of Metabolic Diseases and Reproductive HealthGuangdong‐Hong Kong Metabolism & Reproduction Joint LaboratoryReproductive Medicine CenterGuangdong Second Provincial General HospitalGuangzhou510317China
| | - Wei Li
- Guangzhou Women and Children's Medical CenterGuangzhou Medical UniversityGuangzhou510623China
- State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of ZoologyStem Cell and Regenerative Medicine Innovation InstituteChinese Academy of SciencesBeijing100101China
- University of Chinese Academy of SciencesBeijing100049China
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4
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Xu T, Verhagen MP, Teeuwssen M, Sun W, Joosten R, Sacchetti A, Ewing-Graham PC, Jansen MPHM, Boere IA, Bryce NS, Zeng J, Treutlein HR, Hook J, Hardeman EC, Gunning PW, Fodde R. Tropomyosin1 isoforms underlie epithelial to mesenchymal plasticity, metastatic dissemination, and resistance to chemotherapy in high-grade serous ovarian cancer. Cell Death Differ 2024; 31:360-377. [PMID: 38365970 PMCID: PMC10923901 DOI: 10.1038/s41418-024-01267-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/18/2024] Open
Abstract
Phenotypic plasticity, defined as the ability of individual cells with stable genotypes to exert different phenotypes upon exposure to specific environmental cues, represent the quintessential hallmark of the cancer cell en route from the primary lesion to distant organ sites where metastatic colonization will occur. Phenotypic plasticity is driven by a broad spectrum of epigenetic mechanisms that allow for the reversibility of epithelial-to-mesenchymal and mesenchymal-to-epithelial transitions (EMT/MET). By taking advantage of the co-existence of epithelial and quasi-mesenchymal cells within immortalized cancer cell lines, we have analyzed the role of EMT-related gene isoforms in the regulation of epithelial mesenchymal plasticity (EMP) in high grade serous ovarian cancer. When compared with colon cancer, a distinct spectrum of downstream targets characterizes quasi-mesenchymal ovarian cancer cells, likely to reflect the different modalities of metastasis formation between these two types of malignancy, i.e. hematogenous in colon and transcoelomic in ovarian cancer. Moreover, upstream RNA-binding proteins differentially expressed between epithelial and quasi-mesenchymal subpopulations of ovarian cancer cells were identified that underlie differential regulation of EMT-related isoforms. In particular, the up- and down-regulation of RBM24 and ESRP1, respectively, represent a main regulator of EMT in ovarian cancer cells. To validate the functional and clinical relevance of our approach, we selected and functionally analyzed the Tropomyosin 1 gene (TPM1), encoding for a protein that specifies the functional characteristics of individual actin filaments in contractile cells, among the ovarian-specific downstream AS targets. The low-molecular weight Tpm1.8/9 isoforms are specifically expressed in patient-derived ascites and promote invasion through activation of EMT and Wnt signaling, together with a broad spectrum of inflammation-related pathways. Moreover, Tpm1.8/9 expression confers resistance to taxane- and platinum-based chemotherapy. Small molecule inhibitors that target the Tpm1 isoforms support targeting Tpm1.8/9 as therapeutic targets for the development of future tailor-made clinical interventions.
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Affiliation(s)
- Tong Xu
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Mathijs P Verhagen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Miriam Teeuwssen
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Elisabeth-TweeSteden Ziekenhuis (ETZ), Tilburg, The Netherlands
| | - Wenjie Sun
- Institut Curie, Laboratory of Genetics and Developmental Biology, Paris, France
| | - Rosalie Joosten
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Andrea Sacchetti
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Maurice P H M Jansen
- Department of Medical Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ingrid A Boere
- Department of Medical Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Nicole S Bryce
- School of Biomedical Sciences, Faculty of Medicine and Health, The University of New South Wales, Sydney, New South Wales, Australia
- The Victor Chang Cardiac Research Institute, Darlinghurst, NSW, Australia
| | - Jun Zeng
- Computist Bio-NanoTech, Scoresby, VIC, 3179, Australia
| | - Herbert R Treutlein
- Computist Bio-NanoTech, Scoresby, VIC, 3179, Australia
- Sanoosa Pty. Ltd, Moonee Ponds, VIC, 3039, Australia
| | - Jeff Hook
- School of Biomedical Sciences, Faculty of Medicine and Health, The University of New South Wales, Sydney, New South Wales, Australia
| | - Edna C Hardeman
- School of Biomedical Sciences, Faculty of Medicine and Health, The University of New South Wales, Sydney, New South Wales, Australia
| | - Peter W Gunning
- School of Biomedical Sciences, Faculty of Medicine and Health, The University of New South Wales, Sydney, New South Wales, Australia
| | - Riccardo Fodde
- Department of Pathology, Erasmus University Medical Center, Rotterdam, The Netherlands.
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5
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Wilken MB, Fonar G, Nations C, Pavani G, Tsao V, Garifallou J, Tober J, Bennett L, Maguire JA, Gagne A, Okoli N, Gadue P, Chou ST, Speck NA, French DL, Thom CS. Tropomyosin 1 deficiency facilitates cell state transitions to enhance hemogenic endothelial cell specification during hematopoiesis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.01.555861. [PMID: 37693628 PMCID: PMC10491315 DOI: 10.1101/2023.09.01.555861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Tropomyosins coat actin filaments and impact actin-related signaling and cell morphogenesis. Genome-wide association studies have linked Tropomyosin 1 (TPM1) with human blood trait variation. Prior work suggested that TPM1 regulated blood cell formation in vitro, but it was unclear how or when TPM1 affected hematopoiesis. Using gene-edited induced pluripotent stem cell (iPSC) model systems, TPM1 knockout was found to augment developmental cell state transitions, as well as TNFα and GTPase signaling pathways, to promote hemogenic endothelial (HE) cell specification and hematopoietic progenitor cell (HPC) production. Single-cell analyses showed decreased TPM1 expression during human HE specification, suggesting that TPM1 regulated in vivo hematopoiesis via similar mechanisms. Indeed, analyses of a TPM1 gene trap mouse model showed that TPM1 deficiency enhanced the formation of HE during embryogenesis. These findings illuminate novel effects of TPM1 on developmental hematopoiesis.
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Affiliation(s)
- Madison B Wilken
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Gennadiy Fonar
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Catriana Nations
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Giulia Pavani
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Victor Tsao
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA
| | - James Garifallou
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Joanna Tober
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Laura Bennett
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Nkemdilim Okoli
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Stella T Chou
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Nancy A Speck
- Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Christopher S Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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6
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Wilken MB, Maguire JA, Dungan LV, Gagne A, Osorio-Quintero C, Waxman EA, Chou ST, Gadue P, French DL, Thom CS. Generation of a human Tropomyosin 1 knockout iPSC line. Stem Cell Res 2023; 71:103161. [PMID: 37422949 PMCID: PMC10507314 DOI: 10.1016/j.scr.2023.103161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/20/2023] [Accepted: 06/27/2023] [Indexed: 07/11/2023] Open
Abstract
The CHOPWT17_TPM1KOc28 iPSC line was generated to interrogate the functions of Tropomyosin 1 (TPM1) in primary human cell development. This line was reprogrammed from a previously published wild type control iPSC line.
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Affiliation(s)
- Madison B Wilken
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Lea V Dungan
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Catherine Osorio-Quintero
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Elisa A Waxman
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stella T Chou
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA; Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Christopher S Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA; Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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7
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Wilken MB, Maguire JA, Dungan LV, Gagne A, Osorio-Quintero C, Waxman EA, Chou ST, Gadue P, French DL, Thom CS. Generation of a human Tropomyosin 1 knockout iPSC line. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.03.539242. [PMID: 37205377 PMCID: PMC10187204 DOI: 10.1101/2023.05.03.539242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The CHOPWT17_TPM1KOc28 iPSC line was generated to interrogate the functions of Tropomyosin 1 ( TPM1 ) in primary human cell development. This line was reprogrammed from a previously published wild type control iPSC line.
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Affiliation(s)
- Madison B Wilken
- Division of Neonatology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Lea V Dungan
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Catherine Osorio-Quintero
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Elisa A Waxman
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Stella T Chou
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA, USA
- Division of Hematology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Christopher S Thom
- Division of Neonatology, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA, USA
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8
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Panigrahi A, Esakkiraj P, Saranya C, Das RR, Sundaram M, Sudheer NS, Biju IF, Jayanthi M. A Biofloc-Based Aquaculture System Bio-augmented with Probiotic Bacteria Bacillus tequilensis AP BFT3 Improves Culture Environment, Production Performances, and Proteomic Changes in Penaeus vannamei. Probiotics Antimicrob Proteins 2022; 14:277-287. [PMID: 35192183 DOI: 10.1007/s12602-022-09926-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2022] [Indexed: 02/06/2023]
Abstract
Experiments were conducted to evaluate the probiotic effect of bio-augmented Bacillus tequilensis AP BFT3 on improving production, immune response, and proteomic changes of Penaeus vannamei reared in a biofloc system. Penaeus vannamei larvae (PL13) were stocked in 100-L tanks at a rate of 100 no per tank to study the effect of B. tequilensis AP BFT3 with and without biofloc (BFT-PRO and PRO). Control tanks devoid of probiotic strain were maintained in a clear water system. The growth and survival considerably increased in probiotic added biofloc reared shrimp than probiotic added clear water reared ones and control. Water quality significantly improved in probiotic added (PRO) and biofloc-probiotics (BFT-PRO) system than control. Microbiological investigations indicate increased heterotrophic bacterial load in BFT-PRO compared to the PRO and control. The quality of the isolated microbes was analyzed in terms of enzyme production, and an abundance of enzyme-producing bacterial population was observed in BFT-PRO shrimp. Immune-related genes were significantly upregulated in BFT-PRO shrimp, followed by the PRO and control. The proteomic data (2D gel electrophoresis and MALDI-TOF) of muscle tissue from the experimental animals identified 11 differentially expressed proteins. The Daxx OS and Lit v 1 tropomyosin was found upregulated in BFT-PRO shrimps. Downregulation of Na+/K+ATPase was observed in biofloc with probiotic-supplied groups. The findings revealed that the BFT system's efficacy could be improved through the addition of probiotics. The addition of B. tequilensis AP BFT3 as a probiotic in biofloc induced the expression of essential proteins, reducing contracting diseases during culture.
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Affiliation(s)
- A Panigrahi
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India.
| | - P Esakkiraj
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - C Saranya
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - R R Das
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - M Sundaram
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - N S Sudheer
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - I F Biju
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
| | - M Jayanthi
- Crustacean Culture Division, ICAR-Central Institute of Brackishwater Aquaculture, 75 Santhome High Road, R. A. Puram, Chennai, 600 028, India
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9
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Ayanlaja AA, Hong X, Cheng B, Zhou H, Kanwore K, Alphayo-Kambey P, Zhang L, Tang C, Adeyanju MM, Gao D. Susceptibility of cytoskeletal-associated proteins for tumor progression. Cell Mol Life Sci 2021; 79:13. [PMID: 34964908 PMCID: PMC11072373 DOI: 10.1007/s00018-021-04101-4] [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: 08/17/2021] [Revised: 12/11/2021] [Accepted: 12/16/2021] [Indexed: 10/19/2022]
Abstract
The traditional functions of cytoskeletal-associated proteins (CAPs) in line with polymerization and stabilization of the cytoskeleton have evolved and are currently underrated in oncology. Although therapeutic drugs have been developed to target the cytoskeletal components directly in cancer treatment, several recently established therapeutic agents designed for new targets block the proliferation of cancer cells and suppress resistance to existing target agents. It would seem like these targets only work toward inhibiting the polymerization of cytoskeletal components or hindering mitotic spindle formation in cancer cells, but a large body of literature points to CAPs and their culpability in cell signaling, molecular conformation, organelle trafficking, cellular metabolism, and genomic modifications. Here, we review those underappreciated functions of CAPs, and we delineate the implications of cellular signaling instigated by evasive properties induced by aberrant expression of CAPs in response to stress or failure to exert normal functions. We present an analogy establishing CAPs as vulnerable targets for cancer systems and credible oncotargets. This review establishes a paradigm in which the cancer machinery may commandeer the conventional functions of CAPs for survival, drug resistance, and energy generation; an interesting feature overdue for attention.
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Affiliation(s)
- Abiola Abdulrahman Ayanlaja
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
- Department of Neurology, Johns Hopkins University School of Medicine, 201 N Broadway, Baltimore, MD, 21287, USA
| | - Xiaoliang Hong
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Bo Cheng
- The Affiliated Oriental Hospital of Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Han Zhou
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Kouminin Kanwore
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Piniel Alphayo-Kambey
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Lin Zhang
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | - Chuanxi Tang
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China
| | | | - Dianshuai Gao
- Public Experimental Laboratory, Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
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10
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Kase-Kato I, Asai S, Minemura C, Tsuneizumi K, Oshima S, Koma A, Kasamatsu A, Hanazawa T, Uzawa K, Seki N. Molecular Pathogenesis of the Coronin Family: CORO2A Facilitates Migration and Invasion Abilities in Oral Squamous Cell Carcinoma. Int J Mol Sci 2021; 22:12684. [PMID: 34884487 PMCID: PMC8657730 DOI: 10.3390/ijms222312684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/17/2021] [Accepted: 11/22/2021] [Indexed: 12/13/2022] Open
Abstract
In humans, the coronin family is composed of seven proteins containing WD-repeat domains that regulate actin-based cellular processes. Some members of the coronin family are closely associated with cancer cell migration and invasion. The Cancer Genome Atlas (TCGA) analysis revealed that CORO1C, CORO2A, and CORO7 were significantly upregulated in oral squamous cell carcinoma (OSCC) tissues (p < 0.05). Moreover, the high expression of CORO2A was significantly predictive of the 5-year survival rate of patients with OSCC (p = 0.0203). Overexpression of CORO2A was detected in OSCC clinical specimens by immunostaining. siRNA-mediated knockdown of CORO2A suppressed cancer cell migration and invasion abilities. Furthermore, we investigated the involvement of microRNAs (miRNAs) in the molecular mechanism underlying CORO2A overexpression in OSCC cells. TCGA analysis confirmed that tumor-suppressive miR-125b-5p and miR-140-5p were significantly downregulated in OSCC tissues. Notably, these miRNAs bound directly to the 3'-UTR of CORO2A and controlled CORO2A expression in OSCC cells. In summary, we found that aberrant expression of CORO2A facilitates the malignant transformation of OSCC cells, and that downregulation of tumor-suppressive miRNAs is involved in CORO2A overexpression. Elucidation of the interaction between genes and miRNAs will help reveal the molecular pathogenesis of OSCC.
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Affiliation(s)
- Ikuko Kase-Kato
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Shunichi Asai
- Department of Functional Genomics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
- Department of Otorhinolaryngology/Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
| | - Chikashi Minemura
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Kenta Tsuneizumi
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Sachi Oshima
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Ayaka Koma
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Atsushi Kasamatsu
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Toyoyuki Hanazawa
- Department of Otorhinolaryngology/Head and Neck Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
| | - Katsuhiro Uzawa
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan; (I.K.-K.); (C.M.); (K.T.); (S.O.); (A.K.); (A.K.); (K.U.)
| | - Naohiko Seki
- Department of Functional Genomics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan;
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11
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Doran MH, Lehman W. The Central Role of the F-Actin Surface in Myosin Force Generation. BIOLOGY 2021; 10:1221. [PMID: 34943138 PMCID: PMC8698748 DOI: 10.3390/biology10121221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/17/2021] [Accepted: 11/19/2021] [Indexed: 11/17/2022]
Abstract
Actin is one of the most abundant and versatile proteins in eukaryotic cells. As discussed in many contributions to this Special Issue, its transition from a monomeric G-actin to a filamentous F-actin form plays a critical role in a variety of cellular processes, including control of cell shape and cell motility. Once polymerized from G-actin, F-actin forms the central core of muscle-thin filaments and acts as molecular tracks for myosin-based motor activity. The ATP-dependent cross-bridge cycle of myosin attachment and detachment drives the sliding of myosin thick filaments past thin filaments in muscle and the translocation of cargo in somatic cells. The variation in actin function is dependent on the variation in muscle and non-muscle myosin isoform behavior as well as interactions with a plethora of additional actin-binding proteins. Extensive work has been devoted to defining the kinetics of actin-based force generation powered by the ATPase activity of myosin. In addition, over the past decade, cryo-electron microscopy has revealed the atomic-evel details of the binding of myosin isoforms on the F-actin surface. Most accounts of the structural interactions between myosin and actin are described from the perspective of the myosin molecule. Here, we discuss myosin-binding to actin as viewed from the actin surface. We then describe conserved structural features of actin required for the binding of all or most myosin isoforms while also noting specific interactions unique to myosin isoforms.
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Affiliation(s)
- Matthew H. Doran
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, MA 02118, USA
| | - William Lehman
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, MA 02118, USA
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12
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Lehman W, Maéda Y. Introducing a special issue of the Journal of Muscle Research and Cell Motility on actin and actin-binding proteins. J Muscle Res Cell Motil 2021; 41:1-2. [PMID: 31865487 DOI: 10.1007/s10974-019-09569-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- William Lehman
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, MA, 02118, USA.
| | - Yuichiro Maéda
- Structural Biology Research Center, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
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13
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Wioland H, Frémont S, Guichard B, Echard A, Jégou A, Romet-Lemonne G. Actin filament oxidation by MICAL1 suppresses protections from cofilin-induced disassembly. EMBO Rep 2021; 22:e50965. [PMID: 33393173 DOI: 10.15252/embr.202050965] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/18/2020] [Accepted: 11/27/2020] [Indexed: 02/01/2023] Open
Abstract
Proteins of the ADF/cofilin family play a central role in the disassembly of actin filaments, and their activity must be tightly regulated in cells. Recently, the oxidation of actin filaments by the enzyme MICAL1 was found to amplify the severing action of cofilin through unclear mechanisms. Using single filament experiments in vitro, we found that actin filament oxidation by MICAL1 increases, by several orders of magnitude, both cofilin binding and severing rates, explaining the dramatic synergy between oxidation and cofilin for filament disassembly. Remarkably, we found that actin oxidation bypasses the need for cofilin activation by dephosphorylation. Indeed, non-activated, phosphomimetic S3D-cofilin binds and severs oxidized actin filaments rapidly, in conditions where non-oxidized filaments are unaffected. Finally, tropomyosin Tpm1.8 loses its ability to protect filaments from cofilin severing activity when actin is oxidized by MICAL1. Together, our results show that MICAL1-induced oxidation of actin filaments suppresses their physiological protection from the action of cofilin. We propose that, in cells, direct post-translational modification of actin filaments by oxidation is a way to trigger their disassembly.
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Affiliation(s)
- Hugo Wioland
- Université de Paris, CNRS, Institut Jacques Monod, Paris, France
| | - Stéphane Frémont
- Membrane Traffic and Cell Division Lab, Institut Pasteur, UMR3691, CNRS, Paris, France
| | | | - Arnaud Echard
- Membrane Traffic and Cell Division Lab, Institut Pasteur, UMR3691, CNRS, Paris, France
| | - Antoine Jégou
- Université de Paris, CNRS, Institut Jacques Monod, Paris, France
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14
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Boiero Sanders M, Antkowiak A, Michelot A. Diversity from similarity: cellular strategies for assigning particular identities to actin filaments and networks. Open Biol 2020; 10:200157. [PMID: 32873155 PMCID: PMC7536088 DOI: 10.1098/rsob.200157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The actin cytoskeleton has the particularity of being assembled into many functionally distinct filamentous networks from a common reservoir of monomeric actin. Each of these networks has its own geometrical, dynamical and mechanical properties, because they are capable of recruiting specific families of actin-binding proteins (ABPs), while excluding the others. This review discusses our current understanding of the underlying molecular mechanisms that cells have developed over the course of evolution to segregate ABPs to appropriate actin networks. Segregation of ABPs requires the ability to distinguish actin networks as different substrates for ABPs, which is regulated in three different ways: (1) by the geometrical organization of actin filaments within networks, which promotes or inhibits the accumulation of ABPs; (2) by the identity of the networks' filaments, which results from the decoration of actin filaments with additional proteins such as tropomyosin, from the use of different actin isoforms or from covalent modifications of actin; (3) by the existence of collaborative or competitive binding to actin filaments between two or multiple ABPs. This review highlights that all these effects need to be taken into account to understand the proper localization of ABPs in cells, and discusses what remains to be understood in this field of research.
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Affiliation(s)
- Micaela Boiero Sanders
- Aix Marseille University, CNRS, IBDM, Turing Centre for Living Systems, Marseille, France
| | - Adrien Antkowiak
- Aix Marseille University, CNRS, IBDM, Turing Centre for Living Systems, Marseille, France
| | - Alphée Michelot
- Aix Marseille University, CNRS, IBDM, Turing Centre for Living Systems, Marseille, France
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15
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Thom CS, Jobaliya CD, Lorenz K, Maguire JA, Gagne A, Gadue P, French DL, Voight BF. Tropomyosin 1 genetically constrains in vitro hematopoiesis. BMC Biol 2020; 18:52. [PMID: 32408895 PMCID: PMC7227211 DOI: 10.1186/s12915-020-00783-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/21/2020] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Identifying causal variants and genes from human genetic studies of hematopoietic traits is important to enumerate basic regulatory mechanisms underlying these traits, and could ultimately augment translational efforts to generate platelets and/or red blood cells in vitro. To identify putative causal genes from these data, we performed computational modeling using available genome-wide association datasets for platelet and red blood cell traits. RESULTS Our model identified a joint collection of genomic features enriched at established trait associations and plausible candidate variants. Additional studies associating variation at these loci with change in gene expression highlighted Tropomyosin 1 (TPM1) among our top-ranked candidate genes. CRISPR/Cas9-mediated TPM1 knockout in human induced pluripotent stem cells (iPSCs) enhanced hematopoietic progenitor development, increasing total megakaryocyte and erythroid cell yields. CONCLUSIONS Our findings may help explain human genetic associations and identify a novel genetic strategy to enhance in vitro hematopoiesis. A similar trait-specific gene prioritization strategy could be employed to help streamline functional validation experiments for virtually any human trait.
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Affiliation(s)
- Christopher Stephen Thom
- Division of Neonatology, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Chintan D Jobaliya
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Kimberly Lorenz
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jean Ann Maguire
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alyssa Gagne
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Paul Gadue
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Deborah L French
- Center for Cellular and Molecular Therapeutics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Benjamin Franklin Voight
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Institute of Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, PA, USA.
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16
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Lehman W, Rynkiewicz MJ, Moore JR. A new twist on tropomyosin binding to actin filaments: perspectives on thin filament function, assembly and biomechanics. J Muscle Res Cell Motil 2020; 41:23-38. [PMID: 30771202 PMCID: PMC6697252 DOI: 10.1007/s10974-019-09501-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/07/2019] [Indexed: 02/07/2023]
Abstract
Tropomyosin, best known for its role in the steric regulation of muscle contraction, polymerizes head-to-tail to form cables localized along the length of both muscle and non-muscle actin-based thin filaments. In skeletal and cardiac muscles, tropomyosin, under the control of troponin and myosin, moves in a cooperative manner between blocked, closed and open positions on filaments, thereby masking and exposing actin-binding sites necessary for myosin crossbridge head interactions. While the coiled-coil signature of tropomyosin appears to be simple, closer inspection reveals surprising structural complexity required to perform its role in steric regulation. For example, component α-helices of coiled coils are typically zippered together along a continuous core hydrophobic stripe. Tropomyosin, however, contains a number of anomalous, functionally controversial, core amino acid residues. We argue that the atypical residues at this interface, including clusters of alanines and a charged aspartate, are required for preshaping tropomyosin to readily fit to the surface of the actin filament, but do so without compromising tropomyosin rigidity once the filament is assembled. Indeed, persistence length measurements of tropomyosin are characteristic of a semi-rigid cable, in this case conducive to cooperative movement on thin filaments. In addition, we also maintain that tropomyosin displays largely unrecognized and residue-specific torsional variance, which is involved in optimizing contacts between actin and tropomyosin on the assembled thin filament. Corresponding twist-induced stiffness may also enhance cooperative translocation of tropomyosin across actin filaments. We conclude that anomalous core residues of tropomyosin facilitate thin filament regulatory behavior in a multifaceted way.
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Affiliation(s)
- William Lehman
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts, U.S.A
| | - Michael J. Rynkiewicz
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts, U.S.A
| | - Jeffrey R. Moore
- Department of Biological Sciences, University of Massachusetts-Lowell, Lowell, Massachusetts, U.S.A
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17
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Affiliation(s)
- Edna C Hardeman
- School of Medical Sciences, University of New South Wales, Sydney, Australia.
| | - Peter W Gunning
- School of Medical Sciences, University of New South Wales, Sydney, Australia
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18
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Impact of the actin cytoskeleton on cell development and function mediated via tropomyosin isoforms. Semin Cell Dev Biol 2019; 102:122-131. [PMID: 31630997 DOI: 10.1016/j.semcdb.2019.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 10/03/2019] [Accepted: 10/04/2019] [Indexed: 01/07/2023]
Abstract
The physiological function of actin filaments is challenging to dissect because of the pleiotropic impact of global disruption of the actin cytoskeleton. Tropomyosin isoforms have provided a unique opportunity to address this issue. A substantial fraction of actin filaments in animal cells consist of co-polymers of actin with specific tropomyosin isoforms which determine the functional capacity of the filament. Genetic manipulation of the tropomyosins has revealed isoform specific roles and identified the physiological function of the different actin filament types based on their tropomyosin isoform composition. Surprisingly, there is remarkably little redundancy between the tropomyosins resulting in highly penetrant impacts of both ectopic overexpression and knockout of isoforms. The physiological roles of the tropomyosins cover a broad range from development and morphogenesis to cell migration and specialised tissue function and human diseases.
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19
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Lehman W, Li X, Kiani FA, Moore JR, Campbell SG, Fischer S, Rynkiewicz MJ. Precise Binding of Tropomyosin on Actin Involves Sequence-Dependent Variance in Coiled-Coil Twisting. Biophys J 2018; 115:1082-1092. [PMID: 30195938 DOI: 10.1016/j.bpj.2018.08.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/08/2018] [Accepted: 08/15/2018] [Indexed: 11/17/2022] Open
Abstract
Often considered an archetypal dimeric coiled coil, tropomyosin nonetheless exhibits distinctive "noncanonical" core residues located at the hydrophobic interface between its component α-helices. Notably, a charged aspartate, D137, takes the place of nonpolar residues otherwise present. Much speculation has been offered to rationalize potential local coiled-coil instability stemming from D137 and its effect on regulatory transitions of tropomyosin over actin filaments. Although experimental approaches such as electron cryomicroscopy reconstruction are optimal for defining average tropomyosin positions on actin filaments, to date, these methods have not captured the dynamics of tropomyosin residues clustered around position 137 or elsewhere. In contrast, computational biochemistry, involving molecular dynamics simulation, is a compelling choice to extend the understanding of local and global tropomyosin behavior on actin filaments at high resolution. Here, we report on molecular dynamics simulation of actin-free and actin-associated tropomyosin, showing noncanonical residue D137 as a locus for tropomyosin twist variation, with marked effects on actin-tropomyosin interactions. We conclude that D137-sponsored coiled-coil twisting is likely to optimize electrostatic side-chain contacts between tropomyosin and actin on the assembled thin filament, while offsetting disparities between tropomyosin pseudorepeat and actin subunit periodicities. We find that D137 has only minor local effects on tropomyosin coiled-coil flexibility, (i.e., on its flexural mobility). Indeed, D137-associated overtwisting may actually augment tropomyosin stiffness on actin filaments. Accordingly, such twisting-induced stiffness of tropomyosin is expected to enhance cooperative regulatory translocation of the tropomyosin cable over actin.
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Affiliation(s)
- William Lehman
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts.
| | - Xiaochuan Li
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts
| | - Farooq A Kiani
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts
| | - Jeffrey R Moore
- Department of Biological Sciences, University of Massachusetts-Lowell, Lowell, Massachusetts
| | - Stuart G Campbell
- Departments of Biomedical Engineering & Cellular and Molecular Physiology, Yale University, New Haven, Connecticut
| | - Stefan Fischer
- Interdisciplinary Center for Scientific Computing, University of Heidelberg, Heidelberg, Baden-Württemberg, Germany
| | - Michael J Rynkiewicz
- Department of Physiology & Biophysics, Boston University School of Medicine, Boston, Massachusetts
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20
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Barua B, Sckolnick M, White HD, Trybus KM, Hitchcock-DeGregori SE. Distinct sites in tropomyosin specify shared and isoform-specific regulation of myosins II and V. Cytoskeleton (Hoboken) 2018; 75:150-163. [PMID: 29500902 PMCID: PMC5899941 DOI: 10.1002/cm.21440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/07/2018] [Accepted: 02/19/2018] [Indexed: 12/25/2022]
Abstract
Muscle contraction, cytokinesis, cellular movement, and intracellular transport depend on regulated actin-myosin interaction. Most actin filaments bind one or more isoform of tropomyosin, a coiled-coil protein that stabilizes the filaments and regulates interactions with other actin-binding proteins, including myosin. Isoform-specific allosteric regulation of muscle myosin II by actin-tropomyosin is well-established while that of processive myosins, such as myosin V, which transport organelles and macromolecules in the cell periphery, is less certain. Is the regulation by tropomyosin a universal mechanism, the consequence of the conserved periodic structures of tropomyosin, or is it the result of specialized interactions between particular isoforms of myosin and tropomyosin? Here, we show that striated muscle tropomyosin, Tpm1.1, inhibits fast skeletal muscle myosin II but not myosin Va. The non-muscle tropomyosin, Tpm3.1, in contrast, activates both myosins. To decipher the molecular basis of these opposing regulatory effects, we introduced mutations at conserved surface residues within the six periodic repeats (periods) of Tpm3.1, in positions homologous or analogous to those important for regulation of skeletal muscle myosin by Tpm1.1. We identified conserved residues in the internal periods of both tropomyosin isoforms that are important for the function of myosin Va and striated myosin II. Conserved residues in the internal and C-terminal periods that correspond to Tpm3.1-specific exons inhibit myosin Va but not myosin II function. These results suggest that tropomyosins may directly impact myosin function through both general and isoform-specific mechanisms that identify actin tracks for the recruitment and function of particular myosins.
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Affiliation(s)
- Bipasha Barua
- Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854
| | - Maria Sckolnick
- Department of Molecular Physiology & Biophysics University of Vermont, Burlington, VT 05405
| | - Howard D. White
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA 23507
| | - Kathleen M. Trybus
- Department of Molecular Physiology & Biophysics University of Vermont, Burlington, VT 05405
| | - Sarah E. Hitchcock-DeGregori
- Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ 08854
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21
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Rynkiewicz MJ, Prum T, Hollenberg S, Kiani FA, Fagnant PM, Marston SB, Trybus KM, Fischer S, Moore JR, Lehman W. Tropomyosin Must Interact Weakly with Actin to Effectively Regulate Thin Filament Function. Biophys J 2018; 113:2444-2451. [PMID: 29211998 DOI: 10.1016/j.bpj.2017.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 09/13/2017] [Accepted: 10/05/2017] [Indexed: 10/18/2022] Open
Abstract
Elongated tropomyosin, associated with actin-subunits along the surface of thin filaments, makes electrostatic interactions with clusters of conserved residues, K326, K328, and R147, on actin. The association is weak, permitting low-energy cost regulatory movement of tropomyosin across the filament during muscle activation. Interestingly, acidic D292 on actin, also evolutionarily conserved, lies adjacent to the three-residue cluster of basic amino acids and thus may moderate the combined local positive charge, diminishing tropomyosin-actin interaction and facilitating regulatory-switching. Indeed, charge neutralization of D292 is connected to muscle hypotonia in individuals with D292V actin mutations and linked to congenital fiber-type disproportion. Here, the D292V mutation may predispose tropomyosin-actin positioning to a myosin-blocking state, aberrantly favoring muscle relaxation, thus mimicking the low-Ca2+ effect of troponin even in activated muscles. To test this hypothesis, interaction energetics and in vitro function of wild-type and D292V filaments were measured. Energy landscapes based on F-actin-tropomyosin models show the mutation localizes tropomyosin in a blocked-state position on actin defined by a deeper energy minimum, consistent with augmented steric-interference of actin-myosin binding. In addition, whereas myosin-dependent motility of troponin/tropomyosin-free D292V F-actin is normal, motility is dramatically inhibited after addition of tropomyosin to the mutant actin. Thus, D292V-induced blocked-state stabilization appears to disrupt the delicately poised energy balance governing thin filament regulation. Our results validate the premise that stereospecific but necessarily weak binding of tropomyosin to F-actin is required for effective thin filament function.
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Affiliation(s)
- Michael J Rynkiewicz
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, Massachusetts
| | - Thavanareth Prum
- Department of Biological Sciences, University of Massachusetts-Lowell, Lowell, Massachusetts
| | - Stephen Hollenberg
- Department of Biological Sciences, University of Massachusetts-Lowell, Lowell, Massachusetts
| | - Farooq A Kiani
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, Massachusetts
| | - Patricia M Fagnant
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, Vermont
| | - Steven B Marston
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Kathleen M Trybus
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, Vermont
| | - Stefan Fischer
- Computational Biochemistry Group, IWR, Heidelberg University, Heidelberg, Germany
| | - Jeffrey R Moore
- Department of Biological Sciences, University of Massachusetts-Lowell, Lowell, Massachusetts
| | - William Lehman
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, Massachusetts.
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22
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Temperature sensitive point mutations in fission yeast tropomyosin have long range effects on the stability and function of the actin-tropomyosin copolymer. Biochem Biophys Res Commun 2017; 506:339-346. [PMID: 29080743 PMCID: PMC6269162 DOI: 10.1016/j.bbrc.2017.10.109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/20/2017] [Indexed: 11/25/2022]
Abstract
The actin cytoskeleton is modulated by regulatory actin-binding proteins which fine-tune the dynamic properties of the actin polymer to regulate function. One such actin-binding protein is tropomyosin (Tpm), a highly-conserved alpha-helical dimer which stabilises actin and regulates interactions with other proteins. Temperature sensitive mutants of Tpm are invaluable tools in the study of actin filament dependent processes, critical to the viability of a cell. Here we investigated the molecular basis of the temperature sensitivity of fission yeast Tpm mutants which fail to undergo cytokinesis at the restrictive temperatures. Comparison of Contractile Actomyosin Ring (CAR) constriction as well as cell shape and size revealed the cdc8.110 or cdc8.27 mutant alleles displayed significant differences in their temperature sensitivity and impact upon actin dependent functions during the cell cycle. In vitro analysis revealed the mutant proteins displayed a different reduction in thermostability, and unexpectedly yield two discrete unfolding domains when acetylated on their amino-termini. Our findings demonstrate how subtle changes in structure (point mutations or acetylation) alter the stability not simply of discrete regions of this conserved cytoskeletal protein but of the whole molecule. This differentially impacts the stability and cellular organisation of this essential cytoskeletal protein. Cloning, expression and characterisation of fission yeast temperature sensitive tropomyosin mutants. Detailed in vitro analysis on the impact of temperature upon these mutants. Comparison with in vivo impact of mutations upon actin ring function within the fission yeast. Demonstrates that subtle changes in structure alter the long range stability of Tropomyosin containing polymers.
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23
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Lehman W. Switching Muscles On and Off in Steps: The McKillop-Geeves Three-State Model of Muscle Regulation. Biophys J 2017; 112:2459-2466. [PMID: 28552313 DOI: 10.1016/j.bpj.2017.04.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 04/14/2017] [Accepted: 04/21/2017] [Indexed: 01/12/2023] Open
Abstract
BJ Classic highlighting the article "Regulation of the interaction between actin and myosin subfragment 1: evidence for three states of the thin filament."
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Affiliation(s)
- William Lehman
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, Massachusetts.
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