フルテキストURL fulltext.pdf
著者 Habuta, Munenori| Yasue, Akihiro| Suzuki, Ken-Ichi T.| Fujita, Hirofumi| Sato, Keita| Kono, Hitomi| Takayama, Ayuko| Bando, Tetsuya| Miyaishi, Satoru| Oyadomari, Seiichi| Tanaka, Eiji| Ohuchi, Hideyo|
発行日 2020-10-15
出版物タイトル PLoS ONE
15巻
10号
出版者 Public Library of Science
開始ページ e0240333
ISSN 1932-6203
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 © 2020 Habuta et al.
論文のバージョン publisher
PubMed ID 33057360
DOI 10.1371/journal.pone.0240333
Web of Science KeyUT 000581814700082
関連URL isVersionOf https://doi.org/10.1371/journal.pone.0240333
JaLCDOI 10.18926/AMO/50408
フルテキストURL 67_3_153.pdf
著者 Yamamoto, Masanao| Fujita, Hirofumi| Katase, Naoki| Inoue, Keiji| Nagatsuka, Hitoshi| Utsumi, Kozo| Sasaki, Junzo| Ohuchi, Hideyo|
抄録 Ever since protoporphyrin IX (PpIX) was discovered to accumulate preferentially in cancer cells after 5-aminolevulinic acid (ALA) treatment, photodynamic treatment or therapy (PDT) has been developed as an exciting new treatment option for cancer patients. However, the level of PpIX accumulation in oral cancer is fairly low and insufficient for PDT. Ferrochelatase (FECH) and ATP-binding cassette transporter G2 (ABCG2) are known to regulate PpIX accumulation. In addition, serum enhances PpIX export by ABCG2. We investigated here whether and how inhibitors of FECH and ABCG2 and their combination could improve PpIX accumulation and PDT efficacy in an oral cancer cell line in serum-containing medium. ABCG2 inhibitor and the combination of ABCG2 and FECH inhibitors increased PpIX in the presence of fetal bovine serum (FBS) in an oral cancer cell line. Analysis of ABCG2 gene silencing also revealed the involvement of ABCG2 in the regulation of PpIX accumulation. Inhibitors of FECH and ABCG2, and their combination increased the efficiency of ALA-PDT even in the presence of FBS. ALA-PDT-induced cell death was accompanied by apoptotic events and lipid peroxidation. These results suggest that accumulation of PpIX is determined by the activities of ABCG2 and FECH and that treatment with a combination of their inhibitors improves the efficacy of PDT for oral cancer, especially in the presence of serum.
キーワード 5-aminolevulinic acid protoporphyrin IX oncology photodynamic therapy apoptosis
Amo Type Original Article
発行日 2013-06
出版物タイトル Acta Medica Okayama
67巻
3号
出版者 Okayama University Medical School
開始ページ 153
終了ページ 164
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2013 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 23804138
Web of Science KeyUT 000320747900004
関連URL http://ousar.lib.okayama-u.ac.jp/metadata/50681
著者 Kobuchi, Hirotsugu| Moriya, Koko| Ogino, Tetsuya| Fujita, Hirofumi| Inoue, Keiji| Shuin, Taro| Yasuda, Tatsuji| Utsumi, Kozo| Utsumi, Toshihiko|
発行日 2012-11-26
出版物タイトル PLoS ONE
7巻
11号
資料タイプ 学術雑誌論文
JaLCDOI 10.18926/AMO/59950
フルテキストURL 74_3_199.pdf
著者 Fujita, Hirofumi| Bando, Tetsuya| Oyadomari, Seiichi| Ochiai, Kazuhiko| Watanabe, Masami| Kumon, Hiromi| Ohuchi, Hideyo|
抄録 Dickkopf 3 (Dkk3) is a secreted protein belonging to the Dkk family and encoded by the orthologous gene of REIC. Dkk3/REIC is expressed by mouse and human adrenal glands, but the understanding of its roles in this organ is still limited. To determine the functions of Dkk3 in the mouse adrenal gland, we first identified that the mouse Dkk3 protein is N-glycosylated in the adrenal gland as well as in the brain. We performed proteome analysis on adrenal glands from Dkk3-null mice, in which exons 5 and 6 of the Dkk3 gene are deleted. Twodimensional polyacrylamide gel electrophoresis of adrenal proteins from wild-type and Dkk3-null mice revealed 5 protein spots whose intensities were altered between the 2 genotypes. Mass spectrometry analysis of these spots identified binding immunoglobulin protein (BiP), an endoplasmic reticulum (ER) chaperone. To determine whether mouse Dkk3 is involved in the unfolded protein response (UPR), we carried out a reporter assay using ER-stress responsive elements. Forced expression of Dkk3 resulted in the induction of distinct levels of reporter expression, showing the UPR initiated by the ER membrane proteins of activating transcription factor 6 (ATF6) and inositol-requring enzyme 1 (IRE1). Thus, it is possible that Dkk3 is a physiological ER stressor in the mouse adrenal gland.
キーワード Dkk3 knockout mouse adrenal gland glucose-regulated protein 78 proteome endoplasmic reticulum stress
Amo Type Original Article
発行日 2020-06
出版物タイトル Acta Medica Okayama
74巻
3号
出版者 Okayama University Medical School
開始ページ 199
終了ページ 208
ISSN 0386-300X
NCID AA00508441
資料タイプ 学術雑誌論文
言語 English
著作権者 CopyrightⒸ 2020 by Okayama University Medical School
論文のバージョン publisher
査読 有り
PubMed ID 32577017
Web of Science KeyUT 000543363400003
NAID 120006862792
著者 Fujita, Hirofumi| Shiosaka, Masahiko| Ogino, Tetsuya| Okimura, Yuya| Utsumi, Toshihiko| Sato, Eisuke F.| Akagi, Reiko| Inoue, Masayasu| Utsumi, Kozo| Sasaki, Junzo|
発行日 2008-06-23
出版物タイトル Brain Research
1206巻
資料タイプ 学術雑誌論文
フルテキストURL fulltext.pdf
著者 Kanzaki, Yuki| Fujita, Hirofumi| Sato, Keita| Hosokawa, Mio| Matsumae, Hiroshi| Shiraga, Fumio| Morizane, Yuki| Ohuchi, Hideyo|
キーワード Kir7.1 KCNJ13 human-induced pluripotent cells retinal pigment epithelium phagocytosis
発行日 2020-05
出版物タイトル Investigative Ophthalmology & Visual Science
61巻
5号
出版者 Association for Research in Vision and Ophthalmology
開始ページ 38
ISSN 0146-0404
NCID AA00683736
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
著作権者 Copyright 2020 The Authors
論文のバージョン publisher
PubMed ID 32437550
DOI 10.1167/iovs.61.5.38
Web of Science KeyUT 000540905500039
関連URL isVersionOf https://doi.org/10.1167/iovs.61.5.38