• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • CONTACT US
Tuesday, May 30, 2023
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
  • CONTACT US
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • CONTACT US
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Health

Revealing the individual immune cells inside the plaque that causes life-threatening heart attacks

Bioengineer by Bioengineer
May 6, 2022
in Health
Reading Time: 4 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Through single-cell RNA sequencing, a research group has successfully illuminated the characteristics of Myeloid immune cells in coronary plaque, which causes acute coronary syndrome (this term includes conditions such as unstable angina and acute myocardial infarction (heart attack)). Based on this data, they hope to develop a treatment method that can stabilize coronary plaque.

Figure

Credit: Figure derived from the paper published in Circulation (2022)
(DOI: 10.1161/CIRCULATIONAHA.121.058414)

Through single-cell RNA sequencing, a research group has successfully illuminated the characteristics of Myeloid immune cells in coronary plaque, which causes acute coronary syndrome (this term includes conditions such as unstable angina and acute myocardial infarction (heart attack)). Based on this data, they hope to develop a treatment method that can stabilize coronary plaque.

This study was conducted by a research group from Kobe University Graduate School of Medicine’s Division of Cardiovascular Medicine in the Department of Internal Medicine (Clinical Researcher Takuo Emoto, Associate Professor Tomoya Yamashita and Professor Kenichi Hirata) in collaboration with Hyogo Brain and Heart Center (one of Kobe University’s collaborative partners).

These research findings were published in Circulation on May 3, 2022.

Main Points

  • The characteristics of coronary plaques that cause acute heart attacks were revealed through single-cell RNA sequencing.
  • More monocytes, mast cells and inflammatory macrophages (the latter of which exhibited higher expression of CXCL3 and IL1B) accumulated in coronary plaques involved in acute coronary syndrome in comparison to culprit plaques for chronic coronary syndrome (i.e. stable heart conditions).

Research Background

Recent decades have seen rapid advancement in analytical techniques. One such technique that has received much attention is single-cell RNA sequencing (*2), which enables the gene expression of each individual cell to be comprehensively analyzed. Single-cell RNA sequencing has been carried out on the plaque that causes carotid arteries to harden (arteriosclerosis), however no such studies have been conducted on carotid plaque due to it being very difficult to obtain a sample.

It was previously revealed that the formation of artery-hardening plaque is strongly linked to inflammation. However, the following points have not been fully understood: 1. What kind of immune cells are found in the carotid plaque of an actual human being, and what characteristics do these cells have? 2. Does carotid plaque act at the onset of acute coronary syndrome?

Research Methodology

Samples for this study were obtained by conducting directional coronary atherectomy procedures on consenting patients at Hyogo Brain and Heart Center between October 2022 and June 2021. Single-cell RNA sequencing was carried out on samples from 4 cases of chronic coronary syndrome and 3 cases of acute coronary syndrome. The results revealed the presence of the following myeloid cells in the plaque: macrophages (three types), monocytes, mast cells and dendritic cell clusters. In addition, a comparison of the results for the chronic cases with those of acute cases revealed that more monocytes, mast cells and inflammatory macrophages (the latter of which exhibited higher expression of CXCL3 and IL1B) accumulated in the coronary plaques in acute coronary syndrome cases (See Figure).

Further Developments

In a world first, this study revealed the distinct characteristics of myeloid immune cells in the coronary plaque of patients with acute coronary syndrome. Next, the researchers aim to use this data to develop a treatment method that can stabilize coronary plaque.

Glossary

1. Acute coronary syndrome: This umbrella term describes a range of conditions that occur as a result of coronary plaque ruptures. These ruptures lead to blood clots that severely restrict or close the arteries.  Examples of conditions included under the acute coronary syndrome term are unstable angina, acute myocardial infarction (heart attack) and sudden cardiac death.
2. Single-cell RNA sequencing: A technique that allows the genetic expression of each individual cell to be comprehensively analyzed.

Regarding collaboration with a Kobe University-launched venture

Some of the pipelines for the single-cell RNA sequencing analysis in this study were set up in collaboration with Japan Research Activity Support inc. (JRAS). 

JRAS is a Kobe University-launched venture that is supported by Kobe University Innovation. The research support gained through this industry-academia collaboration contributed towards making it possible to conduct the single-cell RNA sequencing in this study.

Journal Information
Title:

“Single Cell RNA Seq Reveals a Distinct Immune Landscape of Myeloid Cells in Coronary Culprit Plaques Causing Acute Coronary Syndrome.”
DOI: 10.1161/CIRCULATIONAHA.121.058414

Authors:
Takuo Emoto , Hiroyuki Yamamoto, Tomoya Yamashita, Tomofumi Takaya, Takahiro Sawada, Shintaro Takeda, Masayuki Taniguchi, Naoto Sasaki, Naofumi Yoshida, Yoshihiro Saito, Tharini Sivasubramaniyam, Hiromasa Otake, Tomoyuki Furuyashiki, Clinton Robbins, Hiroya Kawai, Kenichi Hirata

Journal
Circulation



Journal

Circulation

DOI

10.1161/CIRCULATIONAHA.121.058414

Method of Research

Case study

Subject of Research

Human tissue samples

Article Title

Single cell RNA seq reveals a distinct immune landscape of myeloid cells in coronary culprit plaques causing acute coronary syndrome

Article Publication Date

3-May-2022

Share12Tweet8Share2ShareShareShare2

Related Posts

michael HIV vaccine

Researchers use ‘natural’ system to identify proteins most useful for developing an effective HIV vaccine

May 30, 2023
Jonathan Cedernaes, MD Ph.D. and Associate Professor in Medical Cell Biology at Uppsala University

Junk food may impair our deep sleep

May 30, 2023

Scientists unveil RNA-guided mechanisms driving cell fate

May 30, 2023

Obesity increases risk of mental disorders throughout life

May 30, 2023

POPULAR NEWS

  • plants

    Plants remove cancer causing toxins from air

    39 shares
    Share 16 Tweet 10
  • Element creation in the lab deepens understanding of surface explosions on neutron stars

    36 shares
    Share 14 Tweet 9
  • Groundbreaking study uncovers first evidence of long-term directionality in the origination of human mutation, fundamentally challenging Neo-Darwinism

    115 shares
    Share 46 Tweet 29
  • How life and geology worked together to forge Earth’s nutrient rich crust

    35 shares
    Share 14 Tweet 9

About

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

Follow us

Recent News

Obstructive sleep apnea disrupts gene activity throughout the day in mice

Researchers use ‘natural’ system to identify proteins most useful for developing an effective HIV vaccine

Scientists identify how some angiogenic drugs used to treat cancer and heart disease cause vascular disease

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 50 other subscribers
  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

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.

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