• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Tuesday, August 5, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Biology

New epigenetic regulatory mechanisms involved in multiple myeloma growth

Bioengineer by Bioengineer
May 17, 2021
in Biology
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Expectations for the development of therapies targeting KDM5A

IMAGE

Credit: Associate Professor Hiroto Ohguchi

An international team of researchers from Japan, the US and the UK has analyzed the function of the histone demethylase KDM5A in multiple myeloma, one of the three major hematological cancers, and clarified the mechanism by which it promotes myeloma cell proliferation. They also developed a novel KDM5 inhibitor and showed that it inhibits cancer cell growth in a myeloma mouse model. The researchers expect that new therapies targeting KDM5A will be developed in the future.

The prognosis for multiple myeloma is improving every year with the introduction of new therapeutic agents, but there is still no cure. Further elucidation of the pathogenesis of this cancer and the development of therapeutic agents are required. The molecular pathogenesis of cancers, including multiple myeloma, is deeply related not only to genetic alterations but also to epigenetic changes. The epigenetic regulator KDM5 family proteins are highly expressed in myeloma cells, but their function is not clear.

To clarify the role of KDM5 family proteins in myeloma cells, researchers from Kumamoto University and the Dana-Farber Cancer Institute used genetic manipulation to suppress the expression of KDM5 in human myeloma cell lines. They found that among KDM5 family members, KDM5A in particular had a strong effect on cell proliferation which prompted them to analyze its molecular mechanisms. They also developed a novel KDM5 inhibitor and validated its efficacy using both myeloma patient cells and myeloma mouse models.

Genetic suppression of KDM5A expression or pharmacological inhibition of KDM5 inhibited the growth of myeloma cells. Furthermore, by using myeloma mouse models in which a human myeloma cell line was transplanted into immunodeficient mice, the researchers demonstrated that their KDM5 inhibitor suppresses myeloma cell growth even in vivo. Functional analysis revealed that KDM5A cooperates with MYC, an important transcription factor in myeloma development and growth, to promote the expression of MYC target genes. Although a high level of histone methylation (H3K4me3) was originally observed near the transcription start site of MYC target genes, this modification level was further increased by repressing KDM5A. This indicates that excess H3K4me3 acts as a barrier to transcription thereby inhibiting transcription contrary to previous theories that H3K4me3 promoted transcription. Further analysis suggested that KDM5A helps switch transcription-associated complexes as they proceed from transcription initiation to transcription elongation by transiently releasing H3K4me3.

This study proposed a new model of epigenetic regulation in which KDM5A regulates histone methylation at the transcription start site to optimal levels during the required phase, thereby promoting the transcription of MYC target genes and leading myeloma cells to proliferation. It also showed that KDM5 inhibitor inhibits the growth of myeloma cells.

“Our research has elucidated part of the mechanism of myeloma cell proliferation mediated by histone modification regulation, and has shown the potential for therapies targeting KDM5A,” said Associate Professor Hiroto Ohguchi, who led this study. “It is also becoming clear that the KDM5 family is involved in the growth of other carcinomas. The problem with the KDM5 inhibitors so far is that they have weak cell membrane permeability and are not effective in cells or in vivo. However, if a therapeutic drug is developed based on the KDM5 inhibitor developed in this study, it is expected to develop into a new therapeutic strategy for not only multiple myeloma but also various other types of cancer by combining it with conventional treatment methods.”

###

This research was posted online in Blood Cancer Discovery on 10 April 2021.

Source: Ohguchi, H., Park, P. M. C., Wang, T., Gryder, B. E., Ogiya, D., Kurata, K., … Qi, J. (2021). Lysine Demethylase 5A is Required for MYC Driven Transcription in Multiple Myeloma. Blood Cancer Discovery, bloodcandisc.0108.2020. doi:10.1158/2643-3230.bcd-20-0108

Media Contact
J. Sanderson & N. Fukuda
[email protected]

Original Source

https://ewww.kumamoto-u.ac.jp/en/news/455/

Related Journal Article

http://dx.doi.org/10.1158/2643-3230.bcd-20-0108

Tags: BiochemistrycancerGeneticsHematologyMedicine/HealthPharmaceutical ChemistryPhysiology
Share12Tweet8Share2ShareShareShare2

Related Posts

Exploring Paenibacillus alvei FS1 as Agricultural Biocontrol

Exploring Paenibacillus alvei FS1 as Agricultural Biocontrol

August 5, 2025
Surfactin-C15 Breaks Cell Membranes: A Dual Study

Surfactin-C15 Breaks Cell Membranes: A Dual Study

August 5, 2025

Genetic Insights into Echinococcus from Greece and Neighbors

August 5, 2025

AI Model Predicts Restaurant Demand Using Weather Data

August 5, 2025
Please login to join discussion

POPULAR NEWS

  • blank

    Neuropsychiatric Risks Linked to COVID-19 Revealed

    71 shares
    Share 28 Tweet 18
  • Overlooked Dangers: Debunking Common Myths About Skin Cancer Risk in the U.S.

    61 shares
    Share 24 Tweet 15
  • Predicting Colorectal Cancer Using Lifestyle Factors

    46 shares
    Share 18 Tweet 12
  • Dr. Miriam Merad Honored with French Knighthood for Groundbreaking Contributions to Science and Medicine

    46 shares
    Share 18 Tweet 12

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

Exploring Paenibacillus alvei FS1 as Agricultural Biocontrol

Boosting NMC 111 Performance with Aluminum and Titanium Doping

Efficacy of Oral Semaglutide in Overweight or Obese East Asian Adults, With and Without Type 2 Diabetes

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.