微生物群に由来するコリシンは,細胞の老化を促すことで腎臓線維症を加速する
Taro Yasuma1,2,3, Hajime Fujimoto4, Corina N D'Alessandro-Gabazza1,2,5
1Department of Immunology, Mie University Faculty and Graduate School of Medicine, Edobashi 2-174, Tsu, Mie, Japan.
Nature communications
|August 25, 2025
まとめ
糖尿病性腎臓病は腸内微生物のペプチドである コリシンによって悪化します コリシンを抗体で標的化することで,糖尿病性腎臓病に対する新しい治療法を提供することができる.
科学分野:
- 腎臓科
- 微生物学
- 免疫学
背景:
- 糖尿病性腎不全は慢性腎疾患 (CKD) の主要な原因で,抗線維治療は限られている.
- 腸内微生物群に由来する代謝物は,代謝疾患にますます関与しています.
研究 の 目的:
- 糖尿病性腎繊維症の新たな要因を特定する
- 糖尿病性腎不全の進行における微生物系由来ペプチドの役割を調査する.
主な方法:
- 血清のコリシン濃度は,糖尿病CKD患者と健康な対照群で測定された.
- コリシンの腎繊維症における役割はネズミのモデルで評価された.
- モノクローナル抗コリシン抗体はマウスの治療に用いられました.
- コリシンの作用メカニズムを明らかにするために,分子動力学シミュレーションと細胞測定を用いた.
主要な成果:
- コリシン濃度は,糖尿病のCKD患者で著しく上昇し,疾患の重症度および腎機能低下と相関していました.
- コリシン濃度の上昇は腎臓の繊維症,炎症,腎不全を悪化させた.
- 抗コリシン抗体の治療は,糖尿病のマウスの腎不全を改善した.
- コリシンは,ヒトの血清アルブミンと相互作用し,細胞老化,上皮-メゼンキマ移行,腎臓細胞のアポトーシスを加速することが示された.
結論:
- コリシンは糖尿病性腎繊維症の進行を促す重要な媒介です.
- コリシンをターゲットにすることは,糖尿病性腎不全の潜在的な治療戦略です.
関連する概念動画
01:19The Effect of Aging on Tissues
2.4K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.4K
01:24Chronic Kidney Disease II: Clinical Manifestations
87
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
87
01:25Chronic Kidney Disease I: Introduction
67
Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...
67
01:29Acute Kidney Injury II: Pathophysiology
72
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
72