Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface

Studies have shown that mutant calreticulin (CALR) constitutively activates the thrombopoietin (TPO) receptor MPL and thus plays a causal role in the development of myeloproliferative neoplasms (MPNs). To further elucidate the molecular mechanism by which mutant CALR promotes MPN development, we stu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Leukemia 2020-02, Vol.34 (2), p.499-509
Hauptverfasser: Masubuchi, Nami, Araki, Marito, Yang, Yinjie, Hayashi, Erina, Imai, Misa, Edahiro, Yoko, Hironaka, Yumi, Mizukami, Yoshihisa, Kihara, Yoshihiko, Takei, Hiraku, Nudejima, Mai, Koike, Masato, Ohsaka, Akimichi, Komatsu, Norio
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 509
container_issue 2
container_start_page 499
container_title Leukemia
container_volume 34
creator Masubuchi, Nami
Araki, Marito
Yang, Yinjie
Hayashi, Erina
Imai, Misa
Edahiro, Yoko
Hironaka, Yumi
Mizukami, Yoshihisa
Kihara, Yoshihiko
Takei, Hiraku
Nudejima, Mai
Koike, Masato
Ohsaka, Akimichi
Komatsu, Norio
description Studies have shown that mutant calreticulin (CALR) constitutively activates the thrombopoietin (TPO) receptor MPL and thus plays a causal role in the development of myeloproliferative neoplasms (MPNs). To further elucidate the molecular mechanism by which mutant CALR promotes MPN development, we studied the subcellular localization of mutant CALR and its importance for the oncogenic properties of mutant CALR. Here, mutant CALR accumulated in the Golgi apparatus, and its entrance into the secretion pathway and capacity to interact with N-glycan were required for its oncogenic capacity via the constitutive activation of MPL. Mutant CALR-dependent MPL activation was resistant to blockade of intracellular protein trafficking, suggesting that MPL is activated before reaching the cell surface. However, removal of MPL from the cell surface with trypsin shut down downstream activation, implying that the surface localization of MPL is required for mutant CALR-dependent activation. Furthermore, we found that mutant CALR and MPL interact on the cell surface. Based on these findings, we propose a model in which mutant CALR induces MPL activation on the cell surface to promote MPN development.
doi_str_mv 10.1038/s41375-019-0564-z
format Article
fullrecord <record><control><sourceid>gale_proqu</sourceid><recordid>TN_cdi_proquest_journals_2474987277</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><galeid>A612927078</galeid><sourcerecordid>A612927078</sourcerecordid><originalsourceid>FETCH-LOGICAL-c498t-9d8dab5e846fbcf80758bc3b2a20b3826e820510546dd4a7715bf82d87caae143</originalsourceid><addsrcrecordid>eNp9kU9rFTEUxYNY7Gv1A7iRgOBu2vxPZlmKWuEVXeg6ZDJJJ2Xe5JlkWtpPb8ap2oJKFoF7f-dc7j0AvMboBCOqTjPDVPIG4bZBXLDm_hnYYCZFwznHz8EGKSUb0RJ2CI5yvkZoaYoX4JBiJoikdAO6y7mYqUBrxuRKsPMYJhim4pKxJcPbUAZ4-WVbS7AMDmZnFyxOcG_KcGvuoI8JVjTcmJ_luHLWjSPMc_LGupfgwJsxu1cP_zH49uH91_OLZvv546fzs21jWatK0_aqNx13ignfWa-Q5KqztCOGoI4qIpwiiGPEmeh7ZqTEvPOK9EpaYxxm9Bi8XX33KX6fXS76Os5pqiM1YbLOkETK_1KUtVgyIR95XZnR6TD5WOpBdiFbfSYwaYlEUlXq5C9Ufb3bBRsn50OtPxG8eyQYnBnLkOM4L6fLT0G8gjbFnJPzep_CzqQ7jZFestdr9rpmr5fs9X3VvHnYbO52rv-t-BV2BcgK5Nqarlz6s_q_XX8AGNm3oA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2349174674</pqid></control><display><type>article</type><title>Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface</title><source>MEDLINE</source><source>Springer Online Journals Complete</source><creator>Masubuchi, Nami ; Araki, Marito ; Yang, Yinjie ; Hayashi, Erina ; Imai, Misa ; Edahiro, Yoko ; Hironaka, Yumi ; Mizukami, Yoshihisa ; Kihara, Yoshihiko ; Takei, Hiraku ; Nudejima, Mai ; Koike, Masato ; Ohsaka, Akimichi ; Komatsu, Norio</creator><creatorcontrib>Masubuchi, Nami ; Araki, Marito ; Yang, Yinjie ; Hayashi, Erina ; Imai, Misa ; Edahiro, Yoko ; Hironaka, Yumi ; Mizukami, Yoshihisa ; Kihara, Yoshihiko ; Takei, Hiraku ; Nudejima, Mai ; Koike, Masato ; Ohsaka, Akimichi ; Komatsu, Norio</creatorcontrib><description>Studies have shown that mutant calreticulin (CALR) constitutively activates the thrombopoietin (TPO) receptor MPL and thus plays a causal role in the development of myeloproliferative neoplasms (MPNs). To further elucidate the molecular mechanism by which mutant CALR promotes MPN development, we studied the subcellular localization of mutant CALR and its importance for the oncogenic properties of mutant CALR. Here, mutant CALR accumulated in the Golgi apparatus, and its entrance into the secretion pathway and capacity to interact with N-glycan were required for its oncogenic capacity via the constitutive activation of MPL. Mutant CALR-dependent MPL activation was resistant to blockade of intracellular protein trafficking, suggesting that MPL is activated before reaching the cell surface. However, removal of MPL from the cell surface with trypsin shut down downstream activation, implying that the surface localization of MPL is required for mutant CALR-dependent activation. Furthermore, we found that mutant CALR and MPL interact on the cell surface. Based on these findings, we propose a model in which mutant CALR induces MPL activation on the cell surface to promote MPN development.</description><identifier>ISSN: 0887-6924</identifier><identifier>EISSN: 1476-5551</identifier><identifier>DOI: 10.1038/s41375-019-0564-z</identifier><identifier>PMID: 31462733</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>13/1 ; 13/31 ; 13/95 ; 14/19 ; 631/67/1990/2331 ; 631/80/86 ; 82/80 ; Antibodies ; Calcium-binding proteins ; Calreticulin ; Calreticulin - genetics ; Cancer Research ; Cell activation ; Cell culture ; Cell Line ; Cell surface ; Cell Transformation, Neoplastic - genetics ; Critical Care Medicine ; Development and progression ; Gene mutations ; Genetic aspects ; Glycan ; Golgi apparatus ; Health aspects ; Hematology ; Humans ; Intensive ; Internal Medicine ; Localization ; Medicine ; Medicine &amp; Public Health ; Mutants ; Mutation ; Mutation - genetics ; Myelofibrosis ; Myeloproliferative Disorders - genetics ; Neoplasms ; Oncogenes ; Oncology ; Plasmids ; Protein transport ; Receptors, Thrombopoietin - genetics ; Secretion ; Secretory Pathway - genetics ; Shutdowns ; Signal Transduction - genetics ; Thrombocythemia ; Thrombocytosis ; Thrombopoietin ; Trypsin ; Trypsin - genetics ; Tumors ; University graduates</subject><ispartof>Leukemia, 2020-02, Vol.34 (2), p.499-509</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2019</rights><rights>COPYRIGHT 2020 Nature Publishing Group</rights><rights>2019© The Author(s), under exclusive licence to Springer Nature Limited 2019</rights><rights>The Author(s), under exclusive licence to Springer Nature Limited 2019.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c498t-9d8dab5e846fbcf80758bc3b2a20b3826e820510546dd4a7715bf82d87caae143</citedby><cites>FETCH-LOGICAL-c498t-9d8dab5e846fbcf80758bc3b2a20b3826e820510546dd4a7715bf82d87caae143</cites><orcidid>0000-0002-3174-5684 ; 0000-0002-3502-5000</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41375-019-0564-z$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/s41375-019-0564-z$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27922,27923,41486,42555,51317</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31462733$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Masubuchi, Nami</creatorcontrib><creatorcontrib>Araki, Marito</creatorcontrib><creatorcontrib>Yang, Yinjie</creatorcontrib><creatorcontrib>Hayashi, Erina</creatorcontrib><creatorcontrib>Imai, Misa</creatorcontrib><creatorcontrib>Edahiro, Yoko</creatorcontrib><creatorcontrib>Hironaka, Yumi</creatorcontrib><creatorcontrib>Mizukami, Yoshihisa</creatorcontrib><creatorcontrib>Kihara, Yoshihiko</creatorcontrib><creatorcontrib>Takei, Hiraku</creatorcontrib><creatorcontrib>Nudejima, Mai</creatorcontrib><creatorcontrib>Koike, Masato</creatorcontrib><creatorcontrib>Ohsaka, Akimichi</creatorcontrib><creatorcontrib>Komatsu, Norio</creatorcontrib><title>Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface</title><title>Leukemia</title><addtitle>Leukemia</addtitle><addtitle>Leukemia</addtitle><description>Studies have shown that mutant calreticulin (CALR) constitutively activates the thrombopoietin (TPO) receptor MPL and thus plays a causal role in the development of myeloproliferative neoplasms (MPNs). To further elucidate the molecular mechanism by which mutant CALR promotes MPN development, we studied the subcellular localization of mutant CALR and its importance for the oncogenic properties of mutant CALR. Here, mutant CALR accumulated in the Golgi apparatus, and its entrance into the secretion pathway and capacity to interact with N-glycan were required for its oncogenic capacity via the constitutive activation of MPL. Mutant CALR-dependent MPL activation was resistant to blockade of intracellular protein trafficking, suggesting that MPL is activated before reaching the cell surface. However, removal of MPL from the cell surface with trypsin shut down downstream activation, implying that the surface localization of MPL is required for mutant CALR-dependent activation. Furthermore, we found that mutant CALR and MPL interact on the cell surface. Based on these findings, we propose a model in which mutant CALR induces MPL activation on the cell surface to promote MPN development.</description><subject>13/1</subject><subject>13/31</subject><subject>13/95</subject><subject>14/19</subject><subject>631/67/1990/2331</subject><subject>631/80/86</subject><subject>82/80</subject><subject>Antibodies</subject><subject>Calcium-binding proteins</subject><subject>Calreticulin</subject><subject>Calreticulin - genetics</subject><subject>Cancer Research</subject><subject>Cell activation</subject><subject>Cell culture</subject><subject>Cell Line</subject><subject>Cell surface</subject><subject>Cell Transformation, Neoplastic - genetics</subject><subject>Critical Care Medicine</subject><subject>Development and progression</subject><subject>Gene mutations</subject><subject>Genetic aspects</subject><subject>Glycan</subject><subject>Golgi apparatus</subject><subject>Health aspects</subject><subject>Hematology</subject><subject>Humans</subject><subject>Intensive</subject><subject>Internal Medicine</subject><subject>Localization</subject><subject>Medicine</subject><subject>Medicine &amp; Public Health</subject><subject>Mutants</subject><subject>Mutation</subject><subject>Mutation - genetics</subject><subject>Myelofibrosis</subject><subject>Myeloproliferative Disorders - genetics</subject><subject>Neoplasms</subject><subject>Oncogenes</subject><subject>Oncology</subject><subject>Plasmids</subject><subject>Protein transport</subject><subject>Receptors, Thrombopoietin - genetics</subject><subject>Secretion</subject><subject>Secretory Pathway - genetics</subject><subject>Shutdowns</subject><subject>Signal Transduction - genetics</subject><subject>Thrombocythemia</subject><subject>Thrombocytosis</subject><subject>Thrombopoietin</subject><subject>Trypsin</subject><subject>Trypsin - genetics</subject><subject>Tumors</subject><subject>University graduates</subject><issn>0887-6924</issn><issn>1476-5551</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kU9rFTEUxYNY7Gv1A7iRgOBu2vxPZlmKWuEVXeg6ZDJJJ2Xe5JlkWtpPb8ap2oJKFoF7f-dc7j0AvMboBCOqTjPDVPIG4bZBXLDm_hnYYCZFwznHz8EGKSUb0RJ2CI5yvkZoaYoX4JBiJoikdAO6y7mYqUBrxuRKsPMYJhim4pKxJcPbUAZ4-WVbS7AMDmZnFyxOcG_KcGvuoI8JVjTcmJ_luHLWjSPMc_LGupfgwJsxu1cP_zH49uH91_OLZvv546fzs21jWatK0_aqNx13ignfWa-Q5KqztCOGoI4qIpwiiGPEmeh7ZqTEvPOK9EpaYxxm9Bi8XX33KX6fXS76Os5pqiM1YbLOkETK_1KUtVgyIR95XZnR6TD5WOpBdiFbfSYwaYlEUlXq5C9Ufb3bBRsn50OtPxG8eyQYnBnLkOM4L6fLT0G8gjbFnJPzep_CzqQ7jZFestdr9rpmr5fs9X3VvHnYbO52rv-t-BV2BcgK5Nqarlz6s_q_XX8AGNm3oA</recordid><startdate>20200201</startdate><enddate>20200201</enddate><creator>Masubuchi, Nami</creator><creator>Araki, Marito</creator><creator>Yang, Yinjie</creator><creator>Hayashi, Erina</creator><creator>Imai, Misa</creator><creator>Edahiro, Yoko</creator><creator>Hironaka, Yumi</creator><creator>Mizukami, Yoshihisa</creator><creator>Kihara, Yoshihiko</creator><creator>Takei, Hiraku</creator><creator>Nudejima, Mai</creator><creator>Koike, Masato</creator><creator>Ohsaka, Akimichi</creator><creator>Komatsu, Norio</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QL</scope><scope>7RV</scope><scope>7T5</scope><scope>7T7</scope><scope>7TM</scope><scope>7TO</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB0</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><orcidid>https://orcid.org/0000-0002-3174-5684</orcidid><orcidid>https://orcid.org/0000-0002-3502-5000</orcidid></search><sort><creationdate>20200201</creationdate><title>Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface</title><author>Masubuchi, Nami ; Araki, Marito ; Yang, Yinjie ; Hayashi, Erina ; Imai, Misa ; Edahiro, Yoko ; Hironaka, Yumi ; Mizukami, Yoshihisa ; Kihara, Yoshihiko ; Takei, Hiraku ; Nudejima, Mai ; Koike, Masato ; Ohsaka, Akimichi ; Komatsu, Norio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c498t-9d8dab5e846fbcf80758bc3b2a20b3826e820510546dd4a7715bf82d87caae143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>13/1</topic><topic>13/31</topic><topic>13/95</topic><topic>14/19</topic><topic>631/67/1990/2331</topic><topic>631/80/86</topic><topic>82/80</topic><topic>Antibodies</topic><topic>Calcium-binding proteins</topic><topic>Calreticulin</topic><topic>Calreticulin - genetics</topic><topic>Cancer Research</topic><topic>Cell activation</topic><topic>Cell culture</topic><topic>Cell Line</topic><topic>Cell surface</topic><topic>Cell Transformation, Neoplastic - genetics</topic><topic>Critical Care Medicine</topic><topic>Development and progression</topic><topic>Gene mutations</topic><topic>Genetic aspects</topic><topic>Glycan</topic><topic>Golgi apparatus</topic><topic>Health aspects</topic><topic>Hematology</topic><topic>Humans</topic><topic>Intensive</topic><topic>Internal Medicine</topic><topic>Localization</topic><topic>Medicine</topic><topic>Medicine &amp; Public Health</topic><topic>Mutants</topic><topic>Mutation</topic><topic>Mutation - genetics</topic><topic>Myelofibrosis</topic><topic>Myeloproliferative Disorders - genetics</topic><topic>Neoplasms</topic><topic>Oncogenes</topic><topic>Oncology</topic><topic>Plasmids</topic><topic>Protein transport</topic><topic>Receptors, Thrombopoietin - genetics</topic><topic>Secretion</topic><topic>Secretory Pathway - genetics</topic><topic>Shutdowns</topic><topic>Signal Transduction - genetics</topic><topic>Thrombocythemia</topic><topic>Thrombocytosis</topic><topic>Thrombopoietin</topic><topic>Trypsin</topic><topic>Trypsin - genetics</topic><topic>Tumors</topic><topic>University graduates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Masubuchi, Nami</creatorcontrib><creatorcontrib>Araki, Marito</creatorcontrib><creatorcontrib>Yang, Yinjie</creatorcontrib><creatorcontrib>Hayashi, Erina</creatorcontrib><creatorcontrib>Imai, Misa</creatorcontrib><creatorcontrib>Edahiro, Yoko</creatorcontrib><creatorcontrib>Hironaka, Yumi</creatorcontrib><creatorcontrib>Mizukami, Yoshihisa</creatorcontrib><creatorcontrib>Kihara, Yoshihiko</creatorcontrib><creatorcontrib>Takei, Hiraku</creatorcontrib><creatorcontrib>Nudejima, Mai</creatorcontrib><creatorcontrib>Koike, Masato</creatorcontrib><creatorcontrib>Ohsaka, Akimichi</creatorcontrib><creatorcontrib>Komatsu, Norio</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Nursing &amp; Allied Health Database</collection><collection>Immunology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Nucleic Acids Abstracts</collection><collection>Oncogenes and Growth Factors Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Health &amp; Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Leukemia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Masubuchi, Nami</au><au>Araki, Marito</au><au>Yang, Yinjie</au><au>Hayashi, Erina</au><au>Imai, Misa</au><au>Edahiro, Yoko</au><au>Hironaka, Yumi</au><au>Mizukami, Yoshihisa</au><au>Kihara, Yoshihiko</au><au>Takei, Hiraku</au><au>Nudejima, Mai</au><au>Koike, Masato</au><au>Ohsaka, Akimichi</au><au>Komatsu, Norio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface</atitle><jtitle>Leukemia</jtitle><stitle>Leukemia</stitle><addtitle>Leukemia</addtitle><date>2020-02-01</date><risdate>2020</risdate><volume>34</volume><issue>2</issue><spage>499</spage><epage>509</epage><pages>499-509</pages><issn>0887-6924</issn><eissn>1476-5551</eissn><abstract>Studies have shown that mutant calreticulin (CALR) constitutively activates the thrombopoietin (TPO) receptor MPL and thus plays a causal role in the development of myeloproliferative neoplasms (MPNs). To further elucidate the molecular mechanism by which mutant CALR promotes MPN development, we studied the subcellular localization of mutant CALR and its importance for the oncogenic properties of mutant CALR. Here, mutant CALR accumulated in the Golgi apparatus, and its entrance into the secretion pathway and capacity to interact with N-glycan were required for its oncogenic capacity via the constitutive activation of MPL. Mutant CALR-dependent MPL activation was resistant to blockade of intracellular protein trafficking, suggesting that MPL is activated before reaching the cell surface. However, removal of MPL from the cell surface with trypsin shut down downstream activation, implying that the surface localization of MPL is required for mutant CALR-dependent activation. Furthermore, we found that mutant CALR and MPL interact on the cell surface. Based on these findings, we propose a model in which mutant CALR induces MPL activation on the cell surface to promote MPN development.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>31462733</pmid><doi>10.1038/s41375-019-0564-z</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-3174-5684</orcidid><orcidid>https://orcid.org/0000-0002-3502-5000</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0887-6924
ispartof Leukemia, 2020-02, Vol.34 (2), p.499-509
issn 0887-6924
1476-5551
language eng
recordid cdi_proquest_journals_2474987277
source MEDLINE; Springer Online Journals Complete
subjects 13/1
13/31
13/95
14/19
631/67/1990/2331
631/80/86
82/80
Antibodies
Calcium-binding proteins
Calreticulin
Calreticulin - genetics
Cancer Research
Cell activation
Cell culture
Cell Line
Cell surface
Cell Transformation, Neoplastic - genetics
Critical Care Medicine
Development and progression
Gene mutations
Genetic aspects
Glycan
Golgi apparatus
Health aspects
Hematology
Humans
Intensive
Internal Medicine
Localization
Medicine
Medicine & Public Health
Mutants
Mutation
Mutation - genetics
Myelofibrosis
Myeloproliferative Disorders - genetics
Neoplasms
Oncogenes
Oncology
Plasmids
Protein transport
Receptors, Thrombopoietin - genetics
Secretion
Secretory Pathway - genetics
Shutdowns
Signal Transduction - genetics
Thrombocythemia
Thrombocytosis
Thrombopoietin
Trypsin
Trypsin - genetics
Tumors
University graduates
title Mutant calreticulin interacts with MPL in the secretion pathway for activation on the cell surface
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-09T17%3A37%3A12IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Mutant%20calreticulin%20interacts%20with%20MPL%20in%20the%20secretion%20pathway%20for%20activation%20on%20the%20cell%20surface&rft.jtitle=Leukemia&rft.au=Masubuchi,%20Nami&rft.date=2020-02-01&rft.volume=34&rft.issue=2&rft.spage=499&rft.epage=509&rft.pages=499-509&rft.issn=0887-6924&rft.eissn=1476-5551&rft_id=info:doi/10.1038/s41375-019-0564-z&rft_dat=%3Cgale_proqu%3EA612927078%3C/gale_proqu%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2349174674&rft_id=info:pmid/31462733&rft_galeid=A612927078&rfr_iscdi=true