• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Establishment of an efficient gene testing system for hereditary pigmentation disorders and functional analysis using genome editing technology

Research Project

Project/Area Number 18K16046
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53050:Dermatology-related
Research InstitutionYamagata University

Principal Investigator

Okamura Ken  山形大学, 医学部, 助教 (40637229)

Project Period (FY) 2021-03-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords遺伝性色素異常症 / 眼皮膚白皮症 / ゲノム編集 / CRISPR/Cas9 / ターゲットシークエンス / NGS / targeted resequencing / OCA / HPS / DSH / SASH1 / MITF
Outline of Research at the Start

遺伝性色素異常症は単一の遺伝子の異常により引き起こされる疾患の総称であり、眼皮膚白皮症(アルビノ)がその代表である。遺伝子によっては色素の異常だけでなく、命に関わる合併症を伴う場合もあるため、患者にとって遺伝子診断の意義は大きい。本研究では、上記疾患が疑われる患者に対し、次世代シークエンサーを用いて40以上にわたる各疾患の原因遺伝子の変異を網羅的に検索するシステムを構築すること、さらにゲノム編集技術を用いて個々の変異の機能解析、ひいては各遺伝子のメラニン合成における役割を解き明かすことを目指す。

Outline of Final Research Achievements

We successfully made up a new system which can screen gene mutations associated with hereditary pigmentation disorders such as oculocutaneous albinism, piebaldism, and dyschromatosis symmetrica hereditaria. This system is based on sequencing by next generation sequencer, thus, we can identify gene mutations rapidly, accurately, and exhaustively. In fact, we could detect rare mutations in patients of which we had failed in gene diagnosis by a previous technique.
Furthermore, we clarified the functional meaning of a new gene mutation as well as a part of function of the gene by using a genome-edited mouse model reflecting the genetic conditon of the patient.

Academic Significance and Societal Importance of the Research Achievements

遺伝性色素異常症は、皮膚の色素低下や増強以外に症候性(他臓器に合併症を持つ)の場合がある。例えば、症候性眼皮膚白皮症の一つであるHermansky-Pudlak症候群の1型、4型では30歳以降に致死的な間質性肺炎の合併がほぼ必至であり、若年期の臨床所見から病型を推測するのは困難である。残念ながら未だ確立した治療法はないものの、遺伝子診断により今後来しうる合併症の予測が可能となり、個々の病型に応じた適切な患者さんへの指導やフォローアップが可能となる。
さらに、これら原因遺伝子の機能は未解明の部分が多く、その機能解明は、将来の根本的治療法に繋がる架け橋となりうる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2022 2021 2019 2018

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Novel AP3B1 mutations in a Hermansky-Pudlak syndrome type2 with neonatal interstitial lung disease2022

    • Author(s)
      Matsuyuki Keigo、Ide Mizuki、Houjou Keishirou、Shima Saho、Tanaka Seiji、Watanabe Yoriko、Tomino Hiroyuki、Egashira Tomoko、Takayanagi Toshimitsu、Tashiro Katsuya、Okamura Ken、Suzuki Tamio、Miyamoto Takayuki、Shibata Hirofumi、Yasumi Takahiro、Nishikomori Ryuta
    • Journal Title

      Pediatric Allergy and Immunology

      Volume: 33 Issue: 2 Pages: 1-4

    • DOI

      10.1111/pai.13748

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Impact of a SLC24A5 variant on the retinal pigment epithelium of a Japanese patient with oculocutaneous albinism type 62021

    • Author(s)
      Saito Toru、Okamura Ken、Kosaki Rika、Wakamatsu Kazumasa、Ito Shosuke、Nakajima Osamu、Yamashita Hidetoshi、Hozumi Yutaka、Suzuki Tamio
    • Journal Title

      Pigment Cell & Melanoma Research

      Volume: 35 Issue: 2 Pages: 212-219

    • DOI

      10.1111/pcmr.13024

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NGS‐based targeted resequencing identified rare subtypes of albinism: Providing accurate molecular diagnosis for Japanese patients with albinism2019

    • Author(s)
      Okamura Ken、Hayashi Masahiro、Abe Yuko、Kono Michihiro、Nakajima Kimiko、Aoyama Yumi、Nishigori Chikako、Ishimoto Hiroshi、Ishimatsu Yuji、Nakajima Mika、Hozumi Yutaka、Suzuki Tamio
    • Journal Title

      Pigment Cell & Melanoma Research

      Volume: 32 Issue: 6 Pages: 848-853

    • DOI

      10.1111/pcmr.12800

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Natural course of epidermolysis bullosa simplex with mottled pigmentation in a Japanese family with the p.P25L mutation in KRT5.2019

    • Author(s)
      Okamura K, Fukushima S, Yamashita J, Abe Y, Hayashi M, Hozumi Y, Ihn H, Suzuki T
    • Journal Title

      The Journal of dermatology

      Volume: 印刷中 Issue: 7

    • DOI

      10.1111/1346-8138.14788

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Impact of a 4-bp deletion variant (rs984225803) in the promoter region of SLC45A2 on color variation among Japanese population2019

    • Author(s)
      Ken Okamuraa, Yuko Abea, Masahiro Hayashia, Toru Saitoa, Kei Nagatania, Toshihide Tanoueb, Mari Wataya-Kaneda, Yutaka Hozumia, and Tamio Suzukia
    • Journal Title

      J Dermatol.

      Volume: - Issue: 8 Pages: 295-296

    • DOI

      10.1111/1346-8138.14831

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A 4-bp deletion promoter variant (rs984225803) is associated with mild OCA4 among Japanese patients2018

    • Author(s)
      Okamura Ken、Hayashi Masahiro、Nakajima Osamu、Kono Michihiro、Abe Yuko、Hozumi Yutaka、Suzuki Tamio
    • Journal Title

      Pigment Cell & Melanoma Research

      Volume: 32 Issue: 1 Pages: 79-84

    • DOI

      10.1111/pcmr.12727

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Impact of a SLC24A5 novel mutation identified in the first Japanese patient with oculocutaneous albinism 6 on retinal pigment epithelium2021

    • Author(s)
      Toru Saito
    • Organizer
      46th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 遺伝性色素異常症の遺伝子解析システムの確立およびゲノム編集技術を用いた機能解析2019

    • Author(s)
      岡村 賢
    • Organizer
      日本皮膚科学会総会
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi