{"created":"2024-02-29T02:17:26.081533+00:00","id":2000151,"links":{},"metadata":{"_buckets":{"deposit":"4dd8b8c0-227e-4c74-887d-1b24a7d7503d"},"_deposit":{"created_by":29,"id":"2000151","owner":"18","owners":[29],"pid":{"revision_id":0,"type":"depid","value":"2000151"},"status":"published"},"_oai":{"id":"oai:ir.kagoshima-u.ac.jp:02000151","sets":["57:86"]},"author_link":["143927"],"control_number":"2000151","item_5_date_6":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2024-02-13","subitem_date_issued_type":"Collected"}]},"item_5_date_granted_54":{"attribute_name":"学位授与年月日 ","attribute_value_mlt":[{"subitem_dategranted":"2024-02-20"}]},"item_5_degree_grantor_53":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"鹿児島大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"17701","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_5_degree_name_42":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(医学)","subitem_degreename_language":"ja"},{"subitem_degreename":"Doctor of Philosophy in Medical Science","subitem_degreename_language":"en"}]},"item_5_description_17":{"attribute_name":"ファイル（説明）","attribute_value_mlt":[{"subitem_description":"博士論文全文, 博士論文要旨, 最終試験結果の要旨, 論文審査の要旨","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_5_description_4":{"attribute_name":"要約(Abstract)","attribute_value_mlt":[{"subitem_description":"Exosomes are 40–100 nm nano-sized extracellular vesicles. They are released from many cell types and move into the extracellular space, thereby transferring their components to recipient cells. Exosomes are receiving increasing attention as novel structures participating in intracellular communication. RAB27B is one of the leading proteins involved in exosome secretion, and oncogenic effects have been reported in several cancers. In recent years, molecularly targeted agents typified by sunitinib are widely used for the treatment of metastatic or recurrent renal cell carcinoma (RCC). However, intrinsic or acquired resistance to sunitinib has become a major issue. The present study aimed to elucidate the role of RAB27B in RCC including sunitinib-resistant and its role in exosomes. Bioinformatic analyses revealed that high expression of RAB27B correlates with progression of RCC. The expression of RAB27B protein in RCC cell lines was significantly enhanced compared with that in normal kidney cell lines. Furthermore, RAB27B protein expression was enhanced in all of the tested sunitinib-resistant RCC cell lines compared to parental cells. Although no specific effect of RAB27B on exosomes was identified in RCC cells, loss-of-function studies demonstrated that knockdown of RAB27B suppressed cell proliferation, migration and invasive activities. Moreover, anti-tumor effects of RAB27B downregulation were also observed in sunitinib-resistant RCC cells. RNA sequence and pathway analysis suggested that the oncogenic effects of RAB27B might be associated with MAPK and VEGF signaling pathways. These results showed that RAB27B is a prognostic marker and a novel therapeutic target in sunitinib-sensitive and -resistant RCCs. Further analyses should improve our understanding of sunitinib resistance in RCC.","subitem_description_language":"en","subitem_description_type":"Other"},{"subitem_description":"Masafumi Tsuruda, Hirofumi Yoshino, Shunsuke Okamura, Kazuki Kuroshima, Yoichi Osako, Takashi Sakaguchi, Satoshi Sugita, Shuichi Tatarano, Masayuki Nakagawa, Hideki Enokida. \nOncogenic effects of RAB27B through exosome independent function in renal cell carcinoma including sunitinib-resistant. \nPLoS ONE 15(5): e0232545.(2020)\nhttps://doi.org/10.1371/journal.pone.0232545","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_5_dissertation_number_55":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲総研第720号"}]},"item_5_publisher_23":{"attribute_name":"公開者・出版者","attribute_value_mlt":[{"subitem_publisher":"鹿児島大学","subitem_publisher_language":"ja"},{"subitem_publisher":"PLOS","subitem_publisher_language":"en"}]},"item_5_text_44":{"attribute_name":"備考","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"【指導教員:榎田英樹】"}]},"item_5_text_47":{"attribute_name":"date.appl","attribute_value_mlt":[{"subitem_text_value":"【学位申請日】2023-09-06"}]},"item_5_version_type_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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Masafumi","creatorNameLang":"en"}],"familyNames":[{"familyName":"鶴田","familyNameLang":"ja"},{"familyName":"ツルダ","familyNameLang":"ja-Kana"},{"familyName":"Tsuruda","familyNameLang":"en"}],"givenNames":[{"givenName":"雅史","givenNameLang":"ja"},{"givenName":"マサフミ","givenNameLang":"ja-Kana"},{"givenName":"Masafumi","givenNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"143927","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-07-02"}],"displaytype":"detail","fileDate":[{"fileDateType":"Collected","fileDateValue":"2024-02-13"}],"filename":"Diss_TSURUDA_Masafumi_ISK720_2024.pdf","filesize":[{"value":"9.0 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sunitinib-resistant","subitem_title_language":"en"},{"subitem_title":"スニチニブ耐性を含む腎細胞癌におけるRAB27Bのエクソソームを介さない癌促進作用","subitem_title_language":"ja"}]},"item_type_id":"5","owner":"29","path":["86"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-02-29"},"publish_date":"2024-02-29","publish_status":"0","recid":"2000151","relation_version_is_last":true,"title":["Oncogenic effects of RAB27B through exosome independent function in renal cell carcinoma including sunitinib-resistant"],"weko_creator_id":"29","weko_shared_id":-1},"updated":"2025-07-02T00:29:54.753196+00:00"}