1
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Chua MD, Mineva GM, Guttman JA. Ube2N is present and functions within listeria Actin-rich structures and lamellipodia: A localization and pharmacological inhibition study. Anat Rec (Hoboken) 2022; 306:1140-1148. [PMID: 35488878 DOI: 10.1002/ar.24939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/10/2022] [Accepted: 03/21/2022] [Indexed: 11/12/2022]
Abstract
The actin cytoskeleton forms much of the structure needed for the intracellular motility of an assortment of microbes as well as entire cells. The co-factor to the ubiquitin conjugating enzyme Ube2N (Ube2V1) has been implicated in both cancer cell metastasis and lysine-63 ubiquitylation of β actin. As this protein complexes with Ube2N, we sought to investigate whether Ube2N itself was involved in actin-based events occurring during the Listeria monocytogenes infections as well as within motile whole cells. Through examination of L. monocytogenes actin clouds, comet tails and membrane protrusions as well as lamellipodia in migrating cells, we show that Ube2N is recruited to actin-rich structures. When pharmacologically inhibited we demonstrate that Ube2N is crucial for the function of actin-rich structures when associated with the plasma membrane.
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Affiliation(s)
- Michael Dominic Chua
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Gabriela Miroslavova Mineva
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Julian Andrew Guttman
- Department of Biological Sciences, Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, British Columbia, Canada
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2
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Chua MD, Walker BD, Jin JP, Guttman JA. Calponins Are Recruited to Actin-Rich Structures Generated by Pathogenic Escherichia coli, Listeria, and Salmonella. Anat Rec (Hoboken) 2018; 301:2103-2111. [PMID: 30312538 DOI: 10.1002/ar.23956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/10/2018] [Accepted: 07/12/2018] [Indexed: 01/12/2023]
Abstract
The ingestion of enteropathogenic Escherichia coli (EPEC), Listeria monocytogenes, or Salmonella enterica serovar Typhimurium leads to their colonization of the intestinal lumen, which ultimately causes an array of ailments ranging from diarrhea to bacteremia. Once in the intestines, these microbes generate various actin-rich structures to attach, invade, or move within the host intestinal epithelial cells. Although an assortment of actin-associated proteins has been identified to varying degrees at these structures, the localization of many actin stabilizing proteins have yet to be analyzed. Here, we examined the recruitment of the actin-associated proteins, calponin 1 and 2 at EPEC pedestals, L. monocytogenes actin clouds, comet tails and listeriopods, and S. Typhimurium membrane ruffles. In other systems, calponins are known to bind to and stabilize actin filaments. In EPEC pedestals, calponin 1 was recruited uniformly throughout the structures while calponin 2 was enriched at the apical tip. During L. monocytogenes infections, calponin 1 was found through all the actin-rich structures generated by the bacteria, while calponin 2 was only present within actin-rich structures formed by L. monocytogenes near the host cell membrane. Finally, both calponins were found within S. Typhimurium-generated membrane ruffles. Taken together, we have shown that although calponin 1 is recruited to actin-rich structures formed by the three bacteria, calponin 2 is specifically recruited to only membrane-bound actin-rich structures formed by the bacteria. Thus, our findings suggest that calponin 2 is a novel marker for membrane-bound actin structures formed by pathogenic bacteria. Anat Rec, 301:2103-2111, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Michael Dominic Chua
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | | | - Jian-Ping Jin
- Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan
| | - Julian A Guttman
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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3
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Chua MD, Liou CH, Bogdan AC, Law HT, Yeh KM, Lin JC, Siu LK, Guttman JA. Klebsiella pneumoniae disassembles host microtubules in lung epithelial cells. Cell Microbiol 2018; 21:e12977. [PMID: 30415487 DOI: 10.1111/cmi.12977] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 01/21/2023]
Abstract
Klebsiella pneumoniae raises significant concerns to the health care industry as these microbes are the source of widespread contamination of medical equipment, cause pneumonia as well as other multiorgan metastatic infections and have gained multidrug resistance. Despite soaring mortality rates, the host cell alterations occurring during these infections remain poorly understood. Here, we show that during in vitro and in vivo K. pneumoniae infections of lung epithelia, microtubules are severed and then eliminated. This destruction does not require direct association of K. pneumoniae with the host cells, as microtubules are disassembled in cells that are distant from the infecting bacteria. This microtubule dismantling is dependent on the K. pneumoniae (Kp) gene ytfL as non-pathogenic Escherichia coli expressing Kp ytfL disassemble microtubules in the absence of K. pneumoniae itself. Our data points to the host katanin catalytic subunit A like 1 protein (KATNAL1) and the katanin regulatory subunit B1 protein (KATNB1) as the gatekeepers to the microtubule severing event as both proteins localise specifically to microtubule cut sites. Infected cells that had either of these proteins knocked out maintained intact microtubules. Taken together, we have identified a novel mechanism that a bacterial pathogen has exploited to cause microtubule destruction within the host epithelia.
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Affiliation(s)
- Michael Dominic Chua
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Ci-Hong Liou
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | | | - Hong T Law
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Kuo-Ming Yeh
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Jung-Chung Lin
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - L Kristopher Siu
- Division of Infection Diseases, National Health Research Institutes, Miaoli, Taiwan
| | - Julian Andrew Guttman
- Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
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4
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Chua MD, Hipolito KJ, Singerr OB, Solway J, Guttman JA. SM22 is required for the maintenance of actin-rich structures generated during bacterial infections. Exp Cell Res 2018; 369:139-146. [PMID: 29778753 DOI: 10.1016/j.yexcr.2018.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 05/15/2018] [Accepted: 05/16/2018] [Indexed: 11/19/2022]
Abstract
The host actin cytoskeleton is utilized by an assortment of pathogenic bacteria to colonize and cause disease in their hosts. Two prominently studied actin-hijacking bacteria are enteropathogenic Escherichia coli (EPEC) and Listeria monocytogenes. EPEC form actin-rich pedestals atop its host cells to move across the intestinal epithelia, while Listeria monocytogenes generate branched actin networks arranged as actin clouds around the bacteria and as comet tails for propulsion within and amongst their host cells. Previous mass spectrometry analysis revealed that a member of the calponin family of actin-bundling proteins, transgelin/SM22 was enriched in EPEC pedestals. To validate that finding and examine the role of SM22 during infections, we initially immunolocalized SM22 in EPEC and L. monocytogenes infected cells, used siRNA to deplete SM22 and EGFP-SM22 to overexpress SM22, then quantified the alterations to the bacterially generated actin structures. SM22 concentrated at all bacterially-generated actin structures. Depletion of SM22 resulted in fewer pedestals and comet tails and caused comet tails to shorten. The decrease in comet tail abundance caused a proportional increase in actin clouds whereas overexpression of SM22 reversed the actin cloud to comet tail proportions and increased comet tail length, while not influencing EPEC pedestal abundance. Thus, we demonstrate that SM22 plays a role in regulating the transitions and morphological appearance of bacterially generated actin-rich structures during infections.
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Affiliation(s)
- Michael Dominic Chua
- Department of Biological Sciences, Simon Fraser University, 8888 University Dr Shrum Science Centre Rm B7239, Burnaby, BC, Canada V5A1S6
| | - Kevin Jay Hipolito
- Department of Biological Sciences, Simon Fraser University, 8888 University Dr Shrum Science Centre Rm B7239, Burnaby, BC, Canada V5A1S6
| | - Onisokumen Benny Singerr
- Department of Biological Sciences, Simon Fraser University, 8888 University Dr Shrum Science Centre Rm B7239, Burnaby, BC, Canada V5A1S6
| | - Julian Solway
- Department of Medicine, University of Chicago, 5841 S. Maryland Ave, MC6026, Rm BH-M644, Chicago, IL 60637, USA
| | - Julian Andrew Guttman
- Department of Biological Sciences, Simon Fraser University, 8888 University Dr Shrum Science Centre Rm B7239, Burnaby, BC, Canada V5A1S6.
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5
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Chua MD, Liou C, Bogdan AC, Law HT, Yeh K, Lin J, Siu LK, Guttman JA. The microtubule networks in lung epithelia are severed during
Klebsiella pneumoniae
infections. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.15.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Ci‐Hong Liou
- Division of Infectious Diseases and Tropical MedicineDepartment of Internal MedicineTri‐Service General HospitalNational Defense Medical CenterTaipeiTaiwan
| | | | - Hong T. Law
- Department of Biological SciencesSimon Fraser UniversityBurnabyBCCanada
| | - Kuo‐Ming Yeh
- Division of Infectious Diseases and Tropical MedicineDepartment of Internal MedicineTri‐Service General HospitalNational Defense Medical CenterTaipeiTaiwan
| | - Jung‐Chung Lin
- Division of Infectious Diseases and Tropical MedicineDepartment of Internal MedicineTri‐Service General HospitalNational Defense Medical CenterTaipeiTaiwan
| | - L Kristopher Siu
- Division of Infection DiseasesNational Health Research InstitutesMiaoliTaiwan
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6
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Chua MD, Moon K, Foster LJ, Guttman JA. Whole cell and bacterial movement: The identification of the ubiquitin E2 enzyme (Ube2N) as a novel actin‐associated protein. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.369.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kyung‐Mee Moon
- Department of Biochemistry & Molecular Biology and Michael Smith LaboratoriesUniversity of British ColumbiaVancouverBCCanada
| | - Leonard J. Foster
- Department of Biochemistry & Molecular Biology and Michael Smith LaboratoriesUniversity of British ColumbiaVancouverBCCanada
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7
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Chua MD, Walker BD, Li S, Guttman JA. Characterization of novel actin‐associated proteins at enteropathogenic
Escherichia coli
and
Listeria monocytogenes
actin‐rich structures. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.520.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Serina Li
- Department of Biological SciencesSimon Fraser UniversityBurnabyBCCanada
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8
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Chua MD, Bogdan AC, Walker BD, Guttman JA. Klebsiella pneumoniae
disassembles microtubules and kills vinca alkaloid resistant lung cancer cells. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.520.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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9
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Chua MD, Hipolito KJ, Solway J, Guttman JA. SM22 is needed for actin‐rich structures formed by enteropathogenic
Escherichia coli
and
Listeria monocytogenes. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.520.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Julian Solway
- Department of MedicineUniversity of ChicagoChicagoIL
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10
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Walker BD, Chua MD, Guttman JA. Immunolocalization of Hsc70 at Bacterially‐Generated Actin‐Rich Structures. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.519.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Bogdan AC, Chua MD, Guttman JA. Tau does not protect microtubules during
Klebsiella pneumoniae
infections. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.520.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Chua MD, Pasqualotto B, Rintoul G, Guttman J. The ubiquitylated protein profile of rat cortical neurons is altered in a primary culture model of stroke (728.12). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.728.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Gordon Rintoul
- Biological Sciences Simon Fraser UniversityBurnabyBCCanada
| | - Julian Guttman
- Biological Sciences Simon Fraser UniversityBurnabyBCCanada
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