Ultradiluted SARS-CoV-2 Spike Protein mitigates hyperinflammation in lung via ferritin and MMP-9 regulation in BALB/c mice.
Virus Res
; 329: 199091, 2023 05.
Статья
в английский
| MEDLINE | ID: covidwho-2278899
ABSTRACT
AIM:
This study investigated the prophylactic and therapeutic role of ultradiluted preparation of the Delta variant of SARS-CoV-2 recombinant spike (S) protein during S antigen-induced inflammatory process of disease progression along with the probable mechanism of action. MAINMETHODS:
Ultradiluted S protein (UDSP) was prepared and administered orally to adult BALB/c mice before and after administration of S antigen intranasally. After an observation period of 72 h, animals were sacrificed and expression level of ferritin was assayed through ELISA. The genetic expressions of cytokines, IL-6, IL-10, IL-1ß, TNFα, IL-17, MMP-9, TIMP-1, ferritin light and heavy chains, and mitochondrial ferritin from lung tissues were investigated through RT-PCR. Formalin-fixed lung tissue sections were stained with hematoxylin and eosin to observe the degree of pathological changes. The activity of MMP-9 in lung tissues was investigated through gelatin zymography and immunofluorescence of MMP-9 in lung tissue sections was performed to revalidate the finding from gelatin zymography. Systems biology approach was used to elucidate a probable pathway where UDSP attenuated the inflammation through the regulation of pro- and anti-inflammatory cytokines. KEYFINDINGS:
UDSP attenuated the S antigen-induced hyperinflammation in the lung by regulating pro- and anti-inflammatory cytokines, calming cytokine storm, reducing ferritin level both in transcriptional and translational levels, and restoring critical ratio of MMP-9 TIMP-1.SIGNIFICANCE:
Our findings suggest a probable pathway by which UDSP might have attenuated inflammation through the regulation of cytokines, receptors, and other molecules. This proclaims UDSP as a promising antiviral agent in the treatment of COVID-19-induced immunopathogenesis.ключевые слова
Полный текст:
Имеется в наличии
Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
Spike Glycoprotein, Coronavirus
/
COVID-19
Тип исследования:
Экспериментальные исследования
/
Наблюдательное исследование
/
Прогностическое исследование
Темы:
Варианты
Пределы темы:
Животные
/
Люди
Язык:
английский
Журнал:
Virus Res
Тематика журнала:
Вирусология
Год:
2023
Тип:
Статья
Аффилированная страна:
J.virusres.2023.199091
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