Depletion of Hsp90β Induces Multiple Defects in B Cell Receptor Signaling
Hsp90 participates in many distinct aspects of cellular functions and accomplishes these roles by interacting with multiple client proteins. To gain insight into the interactions between Hsp90 and its clients, here we have reduced the protein level of Hsp90 in avian cells by gene targeting in an att...
Saved in:
Published in | The Journal of biological chemistry Vol. 281; no. 24; p. 16361 |
---|---|
Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
American Society for Biochemistry and Molecular Biology
16.06.2006
|
Online Access | Get full text |
Cover
Loading…
Abstract | Hsp90 participates in many distinct aspects of cellular functions and accomplishes these roles by interacting with multiple
client proteins. To gain insight into the interactions between Hsp90 and its clients, here we have reduced the protein level
of Hsp90 in avian cells by gene targeting in an attempt to elicit the otherwise undetectable (because of the vast amount of
cellular Hsp90) Hsp90-interacting proteins. Hsp90β-deficient cells can grow, albeit more slowly than wild-type cells. B cell
antigen receptor signaling is multiply impaired in these mutant cells; in particular, the amount of immunoglobulin M heavy
chain protein is markedly reduced. Furthermore, serum activation does not promote ERK phosphorylation in Hsp90β-deficient
cells. These multifaceted depressive effects seem to be provoked independently of each other and possibly recapitulate the
proteome-wide in vivo functions of Hsp90. Reintroduction of the Hsp90β gene efficiently restores all of the defects. Unexpectedly, however, introducing
the Hsp90α gene is also effective in restoration; thus, these defects might be caused by a reduction in the total expression
of Hsp90 rather than by loss of Hsp90β-specific function. |
---|---|
AbstractList | Hsp90 participates in many distinct aspects of cellular functions and accomplishes these roles by interacting with multiple
client proteins. To gain insight into the interactions between Hsp90 and its clients, here we have reduced the protein level
of Hsp90 in avian cells by gene targeting in an attempt to elicit the otherwise undetectable (because of the vast amount of
cellular Hsp90) Hsp90-interacting proteins. Hsp90β-deficient cells can grow, albeit more slowly than wild-type cells. B cell
antigen receptor signaling is multiply impaired in these mutant cells; in particular, the amount of immunoglobulin M heavy
chain protein is markedly reduced. Furthermore, serum activation does not promote ERK phosphorylation in Hsp90β-deficient
cells. These multifaceted depressive effects seem to be provoked independently of each other and possibly recapitulate the
proteome-wide in vivo functions of Hsp90. Reintroduction of the Hsp90β gene efficiently restores all of the defects. Unexpectedly, however, introducing
the Hsp90α gene is also effective in restoration; thus, these defects might be caused by a reduction in the total expression
of Hsp90 rather than by loss of Hsp90β-specific function. |
Author | Yasufumi Minami Kazuya Terasawa Akira Nakai Tomohiro Kurosaki Michiko Minami Tomoki Chiba Yoshimasa Ichikawa Fumika Shinozaki Miho Suzuki Ken Matsumoto Yasufumi Emori Keiji Tanaka Katsuhiko Yoshimatsu |
Author_xml | – sequence: 1 fullname: Fumika Shinozaki – sequence: 2 fullname: Michiko Minami – sequence: 3 fullname: Tomoki Chiba – sequence: 4 fullname: Miho Suzuki – sequence: 5 fullname: Katsuhiko Yoshimatsu – sequence: 6 fullname: Yoshimasa Ichikawa – sequence: 7 fullname: Kazuya Terasawa – sequence: 8 fullname: Yasufumi Emori – sequence: 9 fullname: Ken Matsumoto – sequence: 10 fullname: Tomohiro Kurosaki – sequence: 11 fullname: Akira Nakai – sequence: 12 fullname: Keiji Tanaka – sequence: 13 fullname: Yasufumi Minami |
BookMark | eNqNyjFOw0AQQNERCiIO0FJPQesws7bXdksCChJpgILOSpaxvdGya2UdcQsOwxHgYqTgAPzmN28GEx-8AFwxzZnK_Ga3NfO1JqpqVkQnkDBVWZoV_DqBhEhxWquimsIsxh0dy2s-gylrzSUVZQKPSxmcjDZ4DC2u4lDTz-f3Fz74t4ORiOuDG-1R4FJaMWNE6_EWF-IcPomRYQx7fLad3zjruws4bTcuyuXfz-H6_u5lsUp72_Ufdi_N1gbTy3ujKm5U3rDONGf_ZL-Ym0dF |
ContentType | Journal Article |
DOI | 10.1074/jbc.M600891200 |
DatabaseTitleList | |
DeliveryMethod | fulltext_linktorsrc |
Discipline | Chemistry Anatomy & Physiology |
EISSN | 1083-351X |
ExternalDocumentID | 281_24_16361 |
GroupedDBID | - 02 186 2WC 34G 39C 3O- 4.4 53G 55 5BI 5GY 5RE 5VS 85S AARDX AAWZA ABFLS ABOCM ABPPZ ABPTK ABUFD ABZEH ACNCT ADACO ADBBV ADCOW AEILP AENEX AFFNX AFMIJ AIZTS ALMA_UNASSIGNED_HOLDINGS C1A CJ0 CS3 DIK DL DU5 DZ E3Z EBS EJD ET F20 F5P FA8 FH7 FRP GJ GX1 H13 HH5 HYE IH2 KM KQ8 L7B LI MVM MYA N9A O0- OHT OK1 P-O P0W P2P R.V RHF RHI RNS RPM SJN TBC TN5 UHB UKR UPT UQL VH1 VQA WH7 WOQ X X7M XFK XHC Y6R YZZ ZA5 ZE2 |
ID | FETCH-highwire_biochem_281_24_163613 |
ISSN | 0021-9258 |
IngestDate | Tue Jan 05 14:52:04 EST 2021 |
IsPeerReviewed | true |
IsScholarly | true |
Issue | 24 |
Language | English |
LinkModel | OpenURL |
MergedId | FETCHMERGED-highwire_biochem_281_24_163613 |
PMID | 16617057 |
ParticipantIDs | highwire_biochem_281_24_16361 |
ProviderPackageCode | RHF RHI |
PublicationCentury | 2000 |
PublicationDate | 20060616 |
PublicationDateYYYYMMDD | 2006-06-16 |
PublicationDate_xml | – month: 06 year: 2006 text: 20060616 day: 16 |
PublicationDecade | 2000 |
PublicationTitle | The Journal of biological chemistry |
PublicationYear | 2006 |
Publisher | American Society for Biochemistry and Molecular Biology |
Publisher_xml | – name: American Society for Biochemistry and Molecular Biology |
SSID | ssj0000491 |
Score | 3.6992598 |
Snippet | Hsp90 participates in many distinct aspects of cellular functions and accomplishes these roles by interacting with multiple
client proteins. To gain insight... |
SourceID | highwire |
SourceType | Publisher |
StartPage | 16361 |
Title | Depletion of Hsp90β Induces Multiple Defects in B Cell Receptor Signaling |
URI | http://www.jbc.org/content/281/24/16361.abstract |
Volume | 281 |
hasFullText | 1 |
inHoldings | 1 |
isFullTextHit | |
isPrint | |
link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3LTttAFB2FsIAN4imgBc0C2FgOydixkyUJoIiSSggqZRd57AkZothR6yyaj-jH8Antsj_Vez1je3iohW6iyEmcic_RnePJmXMJOfJx0bhVD-2R8Ee2G7GmHTgNx46ikEV-6NXbUea2-Oz1vrhXg-agUvltuJbmKa-Fi1f3lfwPqnAMcMVdsu9AtjgpHIDngC88AsLw-CaMz8UMs7OV5Ot9m7Xr-L936-K4y447zMK2HGi46uemwXOhzBsytjpWF1ftQDWKGdx2W7fyHiW5nsceSg4ZilUFNqlIkbxPXIH_fCongXU7lnGyAFVaACnDsZwkVl9i5_tyTXuaTCT6QHhQvnOcQB1bzPWHjaUIz1Y7JQ33P5Ylw3DakUkxJOUdydv-6m6bZsXL_CJMZbnXhKrIoBFxu8HALNlMtXnR3GSuUYFBX6p09xdzA4glnBt4WOuDymu1GyojNTWIMptmTGl4GFOvgrOfRnQ_mzoLQyMMaMjcYfblS2SZ-e0mrgR8uimj6-FWTLVv1L8xTxD13dOnY8IcWz0AI7XaUD1362RNg0_PFPc2SEXEm2TrLA7SZPqdntDMQJxd302y0s0R2CLXBTVpMqIZNX_9-PlINSVpTkmqKUllTDsUKUlzStKCktvk6PLirtuz81EOuYJ7aF4QZ4dU4yQWu4TWg4BzKAJO02u5oEWDRsBdX3BXROgscPbIwV9Ptf-P1z-Q1ZKYH0k1_ToXB6AaU36YofEHT1txUA |
link.rule.ids | 315,786,790,27957,27958 |
linkProvider | Colorado Alliance of Research Libraries |
openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Depletion+of+Hsp90%C3%8E%C2%B2+Induces+Multiple+Defects+in+B+Cell+Receptor+Signaling&rft.jtitle=The+Journal+of+biological+chemistry&rft.au=Fumika+Shinozaki&rft.au=Michiko+Minami&rft.au=Tomoki+Chiba&rft.au=Miho+Suzuki&rft.date=2006-06-16&rft.pub=American+Society+for+Biochemistry+and+Molecular+Biology&rft.issn=0021-9258&rft.eissn=1083-351X&rft.volume=281&rft.issue=24&rft.spage=16361&rft_id=info:doi/10.1074%2Fjbc.M600891200&rft_id=info%3Apmid%2F16617057&rft.externalDBID=n%2Fa&rft.externalDocID=281_24_16361 |
thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=0021-9258&client=summon |
thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=0021-9258&client=summon |
thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=0021-9258&client=summon |