ワクチンに関するオミクロンのメッセージ:拡大は広さをもたらす

Duane R Wesemann¹

¹Department of Medicine, Division of Allergy and Clinical Immunology, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA 02139, USA.

Cell

|January 23, 2022

まとめ

SARS-CoV-2 Omicronは中和抗体を回避する. しかし3回目のワクチン接種は免疫記憶を高め抗体機能を回復させ免疫適応性を示します

科学分野:

ウイルス学
免疫学
ワクチン学

背景:

SARS-CoV-2 オミクロン変種の出現は,既存のワクチン誘発免疫に重大な課題をもたらしています.
中和化抗体はウイルスの侵入と感染を防ぐために不可欠です.

研究の目的:

SARS-CoV-2 オミクロンの抗体反応の中和化への影響を調査する.
オミクロン回避に対する様々なワクチンの有効性を評価する.

主な方法:

SARS-CoV-2 オミクロンに対する中和抗体位数の分析.
1回,2回,3回接種後の免疫反応の比較

主要な成果:

SARS-CoV-2 Omicronは,主ワクチンシリーズによって誘発された中和抗体の強い回避性を示しています.
1回または2回投与は,強力な抗オミクロン中和抗体を誘発するのに不十分です.
オミクロンに対する同種の第3用量のブースターは,中和機能を有意に回復させる.

結論:

免疫記憶は適応力を発揮し,SARS-CoV-2の変異体に対する抗体の有効性を拡大します.
ブースターワクチン接種は,進化するウイルス株に対する免疫の強化と拡大に不可欠です.

さらに関連する動画

06:03

Author Spotlight: Advancing Immune Monitoring in Critical Care Patients Using Whole Blood Assays

Published on: September 20, 2024

1.4K

08:52

Use of an Influenza Antigen Microarray to Measure the Breadth of Serum Antibodies Across Virus Subtypes

Published on: July 26, 2019

8.3K

関連する概念動画

Vaccinations

Cross-reactivity

Immune Response Against Viral Pathogens

1.0K

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

1.0K

01:23

Immunological Memory

7.9K

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...

7.9K

01:28

Diversity of Antigen Receptors

882

Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...

882

01:22

Development of Immunocompetence

485

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...

485

関連する実験動画