1
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Karasmanis EP, Reimer JM, Kendrick AA, Nguyen KHV, Rodriguez JA, Truong JB, Lahiri I, Reck-Peterson SL, Leschziner AE. Lis1 relieves cytoplasmic dynein-1 autoinhibition by acting as a molecular wedge. Nat Struct Mol Biol 2023; 30:1357-1364. [PMID: 37620585 PMCID: PMC10497415 DOI: 10.1038/s41594-023-01069-6] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 07/14/2023] [Indexed: 08/26/2023]
Abstract
Cytoplasmic dynein-1 transports intracellular cargo towards microtubule minus ends. Dynein is autoinhibited and undergoes conformational changes to form an active complex that consists of one or two dynein dimers, the dynactin complex, and activating adapter(s). The Lissencephaly 1 gene, LIS1, is genetically linked to the dynein pathway from fungi to mammals and is mutated in people with the neurodevelopmental disease lissencephaly. Lis1 is required for active dynein complexes to form, but how it enables this is unclear. Here, we present a structure of two yeast dynein motor domains with two Lis1 dimers wedged in-between. The contact sites between dynein and Lis1 in this structure, termed 'Chi,' are required for Lis1's regulation of dynein in Saccharomyces cerevisiae in vivo and the formation of active human dynein-dynactin-activating adapter complexes in vitro. We propose that this structure represents an intermediate in dynein's activation pathway, revealing how Lis1 relieves dynein's autoinhibited state.
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Affiliation(s)
- Eva P Karasmanis
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Janice M Reimer
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Kendrick H V Nguyen
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Jennifer A Rodriguez
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Joey B Truong
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Indrajit Lahiri
- School of Biosciences, University of Sheffield, Sheffield, UK
| | - Samara L Reck-Peterson
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA.
- Division of Biological Sciences, Department of Cell and Developmental Biology, University of California San Diego, La Jolla, CA, USA.
- Howard Hughes Medical Institute, Chevy Chase, MD, USA.
| | - Andres E Leschziner
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA.
- Division of Biological Sciences, Department of Molecular Biology, University of California San Diego, La Jolla, CA, USA.
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2
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Kendrick AA, Christensen JR. Bidirectional lysosome transport: a balancing act between ARL8 effectors. Nat Commun 2022; 13:5261. [PMID: 36071047 PMCID: PMC9452499 DOI: 10.1038/s41467-022-32965-y] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 08/24/2022] [Indexed: 11/19/2022] Open
Affiliation(s)
- Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, 92093, USA.
| | - Jenna R Christensen
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, 92093, USA.
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3
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Christensen JR, Kendrick AA, Truong JB, Aguilar-Maldonado A, Adani V, Dzieciatkowska M, Reck-Peterson SL. Cytoplasmic dynein-1 cargo diversity is mediated by the combinatorial assembly of FTS-Hook-FHIP complexes. eLife 2021; 10:74538. [PMID: 34882091 PMCID: PMC8730729 DOI: 10.7554/elife.74538] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/08/2021] [Indexed: 11/13/2022] Open
Abstract
In eukaryotic cells, intracellular components are organized by the microtubule motors cytoplasmic dynein-1 (dynein) and kinesins, which are linked to cargos via adaptor proteins. While ~40 kinesins transport cargo toward the plus end of microtubules, a single dynein moves cargo in the opposite direction. How dynein transports a wide variety of cargos remains an open question. The FTS–Hook–FHIP (‘FHF’) cargo adaptor complex links dynein to cargo in humans and fungi. As human cells have three Hooks and four FHIP proteins, we hypothesized that the combinatorial assembly of different Hook and FHIP proteins could underlie dynein cargo diversity. Using proteomic approaches, we determine the protein ‘interactome’ of each FHIP protein. Live-cell imaging and biochemical approaches show that different FHF complexes associate with distinct motile cargos. These complexes also move with dynein and its cofactor dynactin in single-molecule in vitro reconstitution assays. Complexes composed of FTS, FHIP1B, and Hook1/Hook3 colocalize with Rab5-tagged early endosomes via a direct interaction between FHIP1B and GTP-bound Rab5. In contrast, complexes composed of FTS, FHIP2A, and Hook2 colocalize with Rab1A-tagged ER-to-Golgi cargos and FHIP2A is involved in the motility of Rab1A tubules. Our findings suggest that combinatorial assembly of different FTS–Hook–FHIP complexes is one mechanism dynein uses to achieve cargo specificity.
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Affiliation(s)
- Jenna R Christensen
- Department of Cellular and Molecular Medicine, University of California, San Diego, San Diego, United States
| | - Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California, San Diego, San Diego, United States
| | - Joey B Truong
- Department of Cellular and Molecular Medicine, University of California, San Diego, San Diego, United States
| | | | - Vinit Adani
- Department of Cellular and Molecular Medicine, University of California, San Diego, San Diego, United States
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, United States
| | - Samara L Reck-Peterson
- Department of Cellular and Molecular Medicine, University of California, San Diego, San Diego, United States
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4
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Humphries BA, Hwang PY, Kendrick AA, Kulkarni RP, Pozzar RA, San Martin R. Overstretched and overlooked: solving challenges faced by early-career investigators after the pandemic. Trends Cancer 2021; 7:879-882. [PMID: 34462237 PMCID: PMC8391088 DOI: 10.1016/j.trecan.2021.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 12/05/2022]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has had a detrimental effect on research. However, little has been done to identify and solve the unique challenges faced by early career investigators (ECIs). As a group of American Cancer Society-funded ECIs, we provide recommendations for solving these challenges in the aftermath of the pandemic.
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Affiliation(s)
- Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Priscilla Y Hwang
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
| | - Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA.
| | - Rajan P Kulkarni
- Department of Dermatology, Oregon Health and Science University (OHSU), Portland, OR, USA; Department of Biomedical Engineering, Oregon Health and Science University (OHSU), Portland, OR, USA; Cancer Early Detection Advanced Research Center (CEDAR), Knight Cancer Institute, Oregon Health and Science University (OHSU), Portland, OR, USA; Operative Care Division, VA Portland Health Care System (VAPORHCS), Portland, OR, USA.
| | - Rachel A Pozzar
- Phyllis F. Cantor Center for Research in Nursing and Patient Care Services, Dana-Farber Cancer Institute, Boston, MA, USA.
| | - Rebeca San Martin
- Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, USA.
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5
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Kendrick AA, Dickey AM, Redwine WB, Tran PT, Vaites LP, Dzieciatkowska M, Harper JW, Reck-Peterson SL. Hook3 is a scaffold for the opposite-polarity microtubule-based motors cytoplasmic dynein-1 and KIF1C. J Cell Biol 2019; 218:2982-3001. [PMID: 31320392 PMCID: PMC6719453 DOI: 10.1083/jcb.201812170] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 05/06/2019] [Accepted: 06/21/2019] [Indexed: 01/06/2023] Open
Abstract
The unidirectional and opposite-polarity microtubule-based motors, dynein and kinesin, drive long-distance intracellular cargo transport. Cellular observations suggest that opposite-polarity motors may be coupled. We recently identified an interaction between the cytoplasmic dynein-1 activating adaptor Hook3 and the kinesin-3 KIF1C. Here, using in vitro reconstitutions with purified components, we show that KIF1C and dynein/dynactin can exist in a complex scaffolded by Hook3. Full-length Hook3 binds to and activates dynein/dynactin motility. Hook3 also binds to a short region in the "tail" of KIF1C, but unlike dynein/dynactin, this interaction does not activate KIF1C. Hook3 scaffolding allows dynein to transport KIF1C toward the microtubule minus end, and KIF1C to transport dynein toward the microtubule plus end. In cells, KIF1C can recruit Hook3 to the cell periphery, although the cellular role of the complex containing both motors remains unknown. We propose that Hook3's ability to scaffold dynein/dynactin and KIF1C may regulate bidirectional motility, promote motor recycling, or sequester the pool of available dynein/dynactin activating adaptors.
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Affiliation(s)
- Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - Andrea M Dickey
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | - William B Redwine
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Phuoc Tien Tran
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
| | | | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO
| | - J Wade Harper
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Samara L Reck-Peterson
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California, San Diego, La Jolla, CA
- Howard Hughes Medical Institute, Chevy Chase, MD
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6
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Kendrick AA, Schafer J, Dzieciatkowska M, Nemkov T, D'Alessandro A, Neelakantan D, Ford HL, Pearson CG, Weekes CD, Hansen KC, Eisenmesser EZ. CD147: a small molecule transporter ancillary protein at the crossroad of multiple hallmarks of cancer and metabolic reprogramming. Oncotarget 2018; 8:6742-6762. [PMID: 28039486 PMCID: PMC5341751 DOI: 10.18632/oncotarget.14272] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/30/2016] [Indexed: 02/07/2023] Open
Abstract
Increased expression of CD147 in pancreatic cancer has been proposed to play a critical role in cancer progression via CD147 chaperone function for lactate monocarboxylate transporters (MCTs). Here, we show for the first time that CD147 interacts with membrane transporters beyond MCTs and exhibits a protective role for several of its interacting partners. CD147 prevents its interacting partner's proteasome-dependent degradation and incorrect plasma membrane localization through the CD147 transmembrane (TM) region. The interactions with transmembrane small molecule and ion transporters identified here indicate a central role of CD147 in pancreatic cancer metabolic reprogramming, particularly with respect to amino acid anabolism and calcium signaling. Importantly, CD147 genetic ablation prevents pancreatic cancer cell proliferation and tumor growth in vitro and in vivo in conjunction with metabolic rewiring towards amino acid anabolism, thus paving the way for future combined pharmacological treatments.
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Affiliation(s)
- Agnieszka A Kendrick
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Johnathon Schafer
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Deepika Neelakantan
- Department of Pharmacology, School of Medicine, University of Colorado Denver, CO, USA
| | - Heide L Ford
- Department of Pharmacology, School of Medicine, University of Colorado Denver, CO, USA
| | - Chad G Pearson
- Department of Cell and Developmental Biology, School of Medicine, University of Colorado Denver, CO, USA
| | - Colin D Weekes
- Division of Oncology, Department of Medicine, University of Colorado Denver, CO, USA
| | - Kirk C Hansen
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
| | - Elan Z Eisenmesser
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Denver, CO, USA
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7
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Chi Y, Rahkola JT, Kendrick AA, Holliday MJ, Paukovich N, Roberts TS, Janoff EN, Eisenmesser EZ. Streptococcus pneumoniae IgA1 protease: A metalloprotease that can catalyze in a split manner in vitro. Protein Sci 2017; 26:600-610. [PMID: 28028839 PMCID: PMC5326571 DOI: 10.1002/pro.3110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 07/11/2016] [Revised: 12/01/2016] [Accepted: 12/21/2016] [Indexed: 01/07/2023]
Abstract
IgA1 proteases (IgA1P) from diverse pathogenic bacteria specifically cleave human immunoglobulin A1 (IgA1) at the hinge region, thereby thwarting protective host immune responses. Streptococcus pneumoniae (S. pneumoniae) IgA1P shares no sequence conservation with serine or cysteine types of IgA1Ps or other known proteins, other than a conserved HExxH Zn-binding motif (1604-1608) found in metalloproteases. We have developed a novel expression system to produce the mature S. pneumoniae IgA1P and we have discovered that this form is both attached to the bacterial cell surface and released in its full form. Our data demonstrate that the S. pneumoniae IgA1P comprises two distinct regions that associate to form an active metalloprotease, the first such example of a metalloprotease that can be split in vitro and recombined to form an active enzyme. By capitalizing on this novel domain architecture, we show that the N-terminal region of S. pneumoniae IgA1P comprises the primary binding region for IgA1, although the C-terminal region of S. pneumoniae IgA1P is necessary for cleavage of IgA1. Our findings lend insight into the protein domain architecture of the S. pneumoniae IgA1P and function of this important virulence factor for S. pneumoniae infection.
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Affiliation(s)
- Ying‐Chih Chi
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
| | - Jeremy T. Rahkola
- Mucosal and Vaccine Research Program Colorado (MAVRC), University of Colorado DenverAuroraCO
- Denver Veterans Affairs Medical CenterDenverCO
| | - Agnieszka A. Kendrick
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
| | - Michael J. Holliday
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
| | - Natasia Paukovich
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
| | - Thomas S. Roberts
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
| | - Edward N. Janoff
- Mucosal and Vaccine Research Program Colorado (MAVRC), University of Colorado DenverAuroraCO
- Denver Veterans Affairs Medical CenterDenverCO
| | - Elan Z. Eisenmesser
- Departments of Biochemistry and Molecular GeneticsUniversity of Colorado DenverAuroraCO
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8
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Kendrick AA, Schafer J, Dzieciatkowska M, Nemkov T, Guy J, D’allesandro A, Pearson CG, Weekes CD, Hansen KC, Eisenmesser EZ. CD147 Regulates Cell Metabolism in Pancreatic Cancer via Targeting of Multiple Small Molecule Transporters to the Cell Membrane. Biophys J 2016. [DOI: 10.1016/j.bpj.2015.11.828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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9
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Chi YC, Kendrick AA, Rahkola J, Janoff EN, Eisenmesser EZ. The Catalytic Determinants of Streptococcal Pneumoniae IgA1 Protease are Formed by Multiple Domains. Biophys J 2016. [DOI: 10.1016/j.bpj.2015.11.2146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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10
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Saeedi BJ, Kao DJ, Kitzenberg DA, Dobrinskikh E, Schwisow KD, Masterson JC, Kendrick AA, Kelly CJ, Bayless AJ, Kominsky DJ, Campbell EL, Kuhn KA, Furuta GT, Colgan SP, Glover LE. HIF-dependent regulation of claudin-1 is central to intestinal epithelial tight junction integrity. Mol Biol Cell 2015; 26:2252-62. [PMID: 25904334 PMCID: PMC4462943 DOI: 10.1091/mbc.e14-07-1194] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 04/15/2015] [Indexed: 01/30/2023] Open
Abstract
This study demonstrates a critical link between hypoxia-inducible factor (HIF) and claudin-1 (CLDN1). HIF1β-deficient intestinal epithelial cells develop abnormal tight junction (TJ) structure and have striking barrier defects. CLDN1 is an HIF target gene, and overexpression of CLDN1 in HIF1β-deficient cells restores TJ structure and function. Intestinal epithelial cells (IECs) are exposed to profound fluctuations in oxygen tension and have evolved adaptive transcriptional responses to a low-oxygen environment. These adaptations are mediated primarily through the hypoxia-inducible factor (HIF) complex. Given the central role of the IEC in barrier function, we sought to determine whether HIF influenced epithelial tight junction (TJ) structure and function. Initial studies revealed that short hairpin RNA–mediated depletion of the HIF1β in T84 cells resulted in profound defects in barrier and nonuniform, undulating TJ morphology. Global HIF1α chromatin immunoprecipitation (ChIP) analysis identified claudin-1 (CLDN1) as a prominent HIF target gene. Analysis of HIF1β-deficient IEC revealed significantly reduced levels of CLDN1. Overexpression of CLDN1 in HIF1β-deficient cells resulted in resolution of morphological abnormalities and restoration of barrier function. ChIP and site-directed mutagenesis revealed prominent hypoxia response elements in the CLDN1 promoter region. Subsequent in vivo analysis revealed the importance of HIF-mediated CLDN1 expression during experimental colitis. These results identify a critical link between HIF and specific tight junction function, providing important insight into mechanisms of HIF-regulated epithelial homeostasis.
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Affiliation(s)
- Bejan J Saeedi
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Daniel J Kao
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - David A Kitzenberg
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Evgenia Dobrinskikh
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kayla D Schwisow
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Joanne C Masterson
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Section of Pediatric Gastroenterology, Hepatology and Nutrition, Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, Digestive Health Institute, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Agnieszka A Kendrick
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Caleb J Kelly
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Amanda J Bayless
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Douglas J Kominsky
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Anesthesiology and Perioperative Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Eric L Campbell
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Kristine A Kuhn
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Glenn T Furuta
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Sean P Colgan
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Louise E Glover
- Mucosal Inflammation Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045 Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
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11
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Kendrick AA, Holliday MJ, Isern NG, Zhang F, Camilloni C, Huynh C, Vendruscolo M, Armstrong G, Eisenmesser EZ. The dynamics of interleukin-8 and its interaction with human CXC receptor I peptide. Protein Sci 2014; 23:464-80. [PMID: 24442768 PMCID: PMC3970897 DOI: 10.1002/pro.2430] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 10/16/2013] [Revised: 01/13/2014] [Accepted: 01/16/2014] [Indexed: 01/13/2023]
Abstract
Interleukin-8 (CXCL8, IL-8) is a proinflammatory chemokine important for the regulation of inflammatory and immune responses via its interaction with G-protein coupled receptors, including CXC receptor 1 (CXCR1). CXCL8 exists as both a monomer and as a dimer at physiological concentrations, yet the molecular basis of CXCL8 interaction with its receptor as well as the importance of CXCL8 dimer formation remain poorly characterized. Although several biological studies have indicated that both the CXCL8 monomer and dimer are active, biophysical studies have reported conflicting results regarding the binding of CXCL8 to CXCR1. To clarify this problem, we expressed and purified a peptide (hCXCR1pep) corresponding to the N-terminal region of human CXCR1 (hCXCR1) and utilized nuclear magnetic resonance (NMR) spectroscopy to interrogate the binding of wild-type CXCL8 and a previously reported mutant (CXCL8M) that stabilizes the monomeric form. Our data reveal that the CXCL8 monomer engages hCXCR1pep with a slightly higher affinity than the CXCL8 dimer, but that the CXCL8 dimer does not dissociate upon binding hCXCR1pep. These investigations also showed that CXCL8 is dynamic on multiple timescales, which may help explain the versatility in this interleukin for engaging its target receptors.
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Affiliation(s)
- Agnieszka A Kendrick
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado DenverAurora, Colorado, 80224
| | - Michael J Holliday
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado DenverAurora, Colorado, 80224
| | - Nancy G Isern
- WR Wiley Environmental Molecular Sciences Laboratory, High Filed NMR Facility, RichlandWashington, 99532
| | - Fengli Zhang
- National High Magnetics Field LaboratoryTallahassee, Florida, 32310
| | - Carlo Camilloni
- Department of Chemistry, University of CambridgeCambridge, CB2 1EW, United Kingdom
| | - Chi Huynh
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado DenverAurora, Colorado, 80224
| | - Michele Vendruscolo
- Department of Chemistry, University of CambridgeCambridge, CB2 1EW, United Kingdom
| | - Geoffrey Armstrong
- Department of Chemistry and Biochemistry, University of Colorado at BoulderBoulder, Colorado, 80309
| | - Elan Z Eisenmesser
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado DenverAurora, Colorado, 80224
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12
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Kendrick AA, Eisenmesser EZ. The activity and molecular interactions of extracellular EMMPRIN. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb82] [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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