高澤 啓

写真a

所属

医学部 病理学第二講座

職名

講師

経歴 【 表示 / 非表示

  • 2023年
    -
    継続中

    旭川医科大学病理学講座腫瘍病理分野   教授

  • 2020年
    -
    2023年07月

    札幌医科大学医学部病理学第二講座   准教授

  • 2019年
    -
    2023年07月

    札幌医科大学医学部 教育研究機器センター 形態解析部門   部門長

  • 2018年
    -
    2020年

    札幌医科大学医学部病理学第二講座   講師

  • 2010年
    -
    2018年

    札幌医科大学医学部病理学第二講座   助教

研究分野 【 表示 / 非表示

  • ライフサイエンス   腫瘍生物学  

  • ライフサイエンス   実験病理学  

  • ライフサイエンス   腫瘍診断、治療学  

  • ライフサイエンス   人体病理学  

researchmapの所属 【 表示 / 非表示

  • 旭川医科大学 病理学講座 腫瘍病理分野   教授  

 

研究キーワード 【 表示 / 非表示

  • バイオマーカー探索

  • 超微細構造

  • 病理学

  • タイト結合

  • 細胞間接着

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論文 【 表示 / 非表示

  • Downregulation of SMOC1 is associated with progression of colorectal traditional serrated adenomas.

    Hironori Aoki, Akira Takasawa, Eiichiro Yamamoto, Takeshi Niinuma, Hiro-O Yamano, Taku Harada, Toshiyuki Kubo, Akira Yorozu, Hiroshi Kitajima, Kazuya Ishiguro, Masahiro Kai, Akio Katanuma, Toshiya Shinohara, Hiroshi Nakase, Tamotsu Sugai, Makoto Osanai, Hiromu Suzuki

    BMC gastroenterology   24 ( 1 ) 91 - 91  2024年03月  [国際誌]

     概要を見る

    BACKGROUND: Aberrant DNA methylation is prevalent in colorectal serrated lesions. We previously reported that the CpG island of SMOC1 is frequently methylated in traditional serrated adenomas (TSAs) and colorectal cancers (CRCs) but is rarely methylated in sessile serrated lesions (SSLs). In the present study, we aimed to further characterize the expression of SMOC1 in early colorectal lesions. METHODS: SMOC1 expression was analyzed immunohistochemically in a series of colorectal tumors (n = 199) and adjacent normal colonic tissues (n = 112). RESULTS: SMOC1 was abundantly expressed in normal colon and SSLs while it was significantly downregulated in TSAs, advanced adenomas and cancers. Mean immunohistochemistry scores were as follows: normal colon, 24.2; hyperplastic polyp (HP), 18.9; SSL, 23.8; SSL with dysplasia (SSLD)/SSL with early invasive cancer (EIC), 15.8; TSA, 5.4; TSA with high grade dysplasia (HGD)/EIC, 4.7; non-advanced adenoma, 21.4; advanced adenoma, 11.9; EIC, 10.9. Higher levels SMOC1 expression correlated positively with proximal colon locations and flat tumoral morphology, reflecting its abundant expression in SSLs. Among TSAs that contained both flat and protruding components, levels of SMOC1 expression were significantly lower in the protruding components. CONCLUSION: Our results suggest that reduced expression of SMOC1 is associated with progression of TSAs and conventional adenomas and that SMOC1 expression may be a biomarker for diagnosis of serrated lesions and risk prediction in colorectal tumors.

    DOI PubMed

  • Common pathological findings in the heart in COVID-19-related sudden death cases: An autopsy case series.

    Daisuke Kyuno, Masatoshi Tateno, Yusuke Ono, Kazufumi Magara, Kumi Takasawa, Akira Takasawa, Makoto Osanai

    Heliyon   9 ( 10 ) e20564  2023年10月  [国際誌]

     概要を見る

    BACKGROUND: Cardiomyopathy is a leading cause of sudden out-of-hospital death after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and coronavirus disease 2019 (COVID-19) vaccination. Such unexpected COVID-19-related cardiomyopathies are challenging to diagnose as specific pathological findings are not always identified. CASE SUMMARY: We reported the autopsy findings of two cases of sudden death due to COVID-19-related cardiomyopathies. In one case, death occurred after SARS-CoV-2 infection, while in the other, after COVID-19 vaccination. We found common pathological findings in both hearts: decreased staining intensity with special stains, loss of rhabdomeres, and multivacuolation in cardiomyocytes without inflammatory cell infiltration. The remaining organs showed no findings that could have contributed to the deaths. CONCLUSION: In cases of sudden death after SARS-CoV-2 infection or COVID-19 vaccination, the decreased staining intensity with special stains may aid the diagnosis of sudden death due to COVID-19-related cardiomyopathy, even when H&E staining shows few findings.

    DOI PubMed

  • Coefficient of variation of T2-weighted MRI may predict the prognosis of malignant peripheral nerve sheath tumor

    Makoto Emori, Hiroyuki Tsuchie, Hiroyuki Takashima, Atsushi Teramoto, Yasutaka Murahashi, Yoshinori Imura, Hidetatsu Outani, Sho Nakai, Satoshi Takenaka, Ryosuke Hirota, Naoya Nakahashi, Junya Shimizu, Kazuyuki Murase, Akira Takasawa, Hiroyuki Nagasawa, Shintaro Sugita, Kohichi Takada, Tadashi Hasegawa, Seiji Okada, Naohisa Miyakoshi, Toshihiko Yamashita

    Skeletal Radiology ( Springer Science and Business Media LLC )   2023年09月

    DOI

  • ACLP Activates Cancer-Associated Fibroblasts and Inhibits CD8+ T-Cell Infiltration in Oral Squamous Cell Carcinoma.

    Shohei Sekiguchi, Akira Yorozu, Fumika Okazaki, Takeshi Niinuma, Akira Takasawa, Eiichiro Yamamoto, Hiroshi Kitajima, Toshiyuki Kubo, Yui Hatanaka, Koyo Nishiyama, Kazuhiro Ogi, Hironari Dehari, Atsushi Kondo, Makoto Kurose, Kazufumi Obata, Akito Kakiuchi, Masahiro Kai, Yoshihiko Hirohashi, Toshihiko Torigoe, Takashi Kojima, Makoto Osanai, Kenichi Takano, Akihiro Miyazaki, Hiromu Suzuki

    Cancers   15 ( 17 )  2023年08月  [国際誌]

     概要を見る

    We previously showed that upregulation of adipocyte enhancer-binding protein 1 (AEBP1) in vascular endothelial cells promotes tumor angiogenesis. In the present study, we aimed to clarify the role of stromal AEBP1/ACLP expression in oral squamous cell carcinoma (OSCC). Immunohistochemical analysis showed that ACLP is abundantly expressed in cancer-associated fibroblasts (CAFs) in primary OSCC tissues and that upregulated expression of ACLP is associated with disease progression. Analysis using CAFs obtained from surgically resected OSCCs showed that the expression of AEBP1/ACLP in CAFs is upregulated by co-culture with OSCC cells or treatment with TGF-β1, suggesting cancer-cell-derived TGF-β1 induces AEBP1/ACLP in CAFs. Collagen gel contraction assays showed that ACLP contributes to the activation of CAFs. In addition, CAF-derived ACLP promotes migration, invasion, and in vivo tumor formation by OSCC cells. Notably, tumor stromal ACLP expression correlated positively with collagen expression and correlated inversely with CD8+ T cell infiltration into primary OSCC tumors. Boyden chamber assays suggested that ACLP in CAFs may attenuate CD8+ T cell migration. Our results suggest that stromal ACLP contributes to the development of OSCCs, and that ACLP is a potential therapeutic target.

    DOI PubMed

  • Emerging roles of transmembrane-type tight junction proteins in cancers.

    Akira Takasawa, Kumi Takasawa, Masaki Murata, Makoto Osanai, Norimasa Sawada

    Pathology international   73 ( 8 ) 331 - 340  2023年08月  [国際誌]

     概要を見る

    Tight junctions (TJs) are the most apical components of the cell-cell adhesion machinery in epithelial and endothelial cells and they play essential roles in homeostasis. Recent studies have revealed that aberrant expression of tight junction proteins (TJPs) is frequently observed in various type of cancers. Here we review cancer-associated aberrant expression of TJPs with focus on transmembrane-type TJPs including claudins, junctional adhesion molecule-A (JAM-A), and occludin. Some transmembrane-type TJPs are upregulated at the early neoplastic stage and their expression persists during dedifferentiation. Aberrant expression of TJPs contributes to proliferation, invasion, and dysregulated signaling of cancer cells. In addition to an increase in their expression level, their localization is altered from a TJ-restricted pattern to distribution throughout the whole cell membrane, making them suitable as therapeutic targets. Extracellular domains of transmembrane-type TJPs can be approached by target drugs not only from the lumen side (apical side) but also from the extracellular matrix side (basal side), including blood vessels. Aberrantly expressed TJPs are potential useful diagnostic markers as well as therapeutic targets for cancers.

    DOI PubMed

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書籍等出版物 【 表示 / 非表示

  • WHO血液腫瘍分類 : WHO分類2008をうまく活用するために

    直江, 知樹

    医薬ジャーナル社  2010年02月 ISBN: 9784753224265

Misc 【 表示 / 非表示

  • タイト結合分子JAM-Aの異常高発現が乳がんの悪性化に関与する(Elevated expression of JAM-A contributes malignant progression of breast cancer)

    真柄 和史, 高澤 啓, 高澤 久美, 及能 大輔, 小山内 誠

    日本癌学会総会記事 ( (一社)日本癌学会 )  81回   P - 3247  2022年09月

  • 膵癌患者の予後と癌進展におけるJAM-Aの役割(Junctional Adhesion Molecule-A may play a role in the progression of pancreatic cancer)

    及能 大輔, 高澤 啓, 高澤 久美, 真柄 和史, 小山内 誠

    日本癌学会総会記事 ( (一社)日本癌学会 )  81回   J - 2053  2022年09月

  • レチノイン酸代謝酵素CYP26A1の異常発現は、膵癌細胞の悪性形質の促進に関与する

    井上 彩乃, 小野 佑輔, 高澤 啓, 及能 大輔, 真柄 和史, 青山 智志, 高澤 久美, 小山内 誠

    日本病理学会会誌 ( (一社)日本病理学会 )  111 ( 1 ) 351 - 352  2022年03月

  • 子宮頸部腺癌におけるJAM-A高発現はPVR/CD155と関連して癌悪性化に寄与する

    村上 太郎, 高澤 啓, 青山 智志, 小野 佑輔, 高澤 久美, 村田 雅樹, 小山内 誠

    日本病理学会会誌 ( (一社)日本病理学会 )  111 ( 1 ) 250 - 250  2022年03月

  • 舌扁平上皮癌におけるPVR発現とその意義

    永井 佐和, 高澤 啓, 永井 美佐, 仲盛 優菜, 小野 佑輔, 真柄 和史, 及能 大輔, 高澤 久美, 村田 雅樹, 小山内 誠

    日本病理学会会誌 ( (一社)日本病理学会 )  111 ( 1 ) 354 - 354  2022年03月

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受賞 【 表示 / 非表示

  • 最優秀演題賞

    2022年11月   第54回 日本臨床分子形態学会   細胞接着と微絨毛形成におけるタイト結合蛋白質 claudin 1 の役割  

  • 学術研究賞

    2018年11月   日本病理学会  

共同研究・競争的資金等の研究課題 【 表示 / 非表示

  • 高深度プロテオーム解析を用いたがんにおけるタイト結合タンパク質局在制御因子の探索

    基盤研究(C)

    研究期間:

    2023年04月
    -
    2027年03月
     

    高澤 久美, 高澤 啓

  • プロテオーム解析による骨肉腫の肺転移機序解明と新規治療開発

    基盤研究(C)

    研究期間:

    2023年04月
    -
    2026年03月
     

    江森 誠人, 高澤 啓, 高田 弘一, 中橋 尚也

  • RSウイルス感染症の宿主標的治療の構築に向けた感染規定宿主因子の同定と基盤研究

    基盤研究(C)

    研究期間:

    2022年04月
    -
    2025年03月
     

    山本 聡, 小笠原 徳子, 高澤 啓

  • 大腸低分化腺がんにおけるSAA1の分子機能解明と診断・治療への応用

    基盤研究(C)

    研究期間:

    2022年04月
    -
    2025年03月
     

    青木 敬則, 高澤 啓, 山本 英一郎, 新沼 猛

  • 深在性真菌症のFFPE組織を用いた分子形態学的な同定および解析方法の確立

    基盤研究(C)

    研究期間:

    2022年04月
    -
    2025年03月
     

    青山 智志, 高澤 啓, 山本 聡

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委員歴 【 表示 / 非表示

  • 2023年12月
     
     

      Associate Editor

  • 2022年01月
    -
    継続中

      評議員

  • 2017年04月
    -
    継続中

      学術評議員