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巨噬細(xì)胞控制HSV-1感染

更新時(shí)間:2026-01-21   點(diǎn)擊次數(shù):13次

為了證明巨噬細(xì)胞在體內(nèi)控制單純皰疹病毒1型(HSV-1)感染中的重要性,我們通過靜脈注射HSV-1感染了C57BL/6小鼠,然后通過組織學(xué)分析病毒在肝臟中的分布。未經(jīng)處理的小鼠和HSV-1感染的巨噬細(xì)胞耗竭小鼠作為對(duì)照。感染1小時(shí)后,大多數(shù)病毒接種體與肝臟內(nèi)的F4/80巨噬細(xì)胞共定位(圖1a),表明巨噬細(xì)胞能夠在全身給藥后迅速攝取HSV-1。未經(jīng)感染的小鼠沒有顯示HSV-1染色(圖1a),而巨噬細(xì)胞耗竭小鼠在脾臟和肝臟中沒有F4/80陽(yáng)性細(xì)胞,也沒有共定位(補(bǔ)充圖1)4。為了深入了解巨噬細(xì)胞的功能作用,我們用氯膦酸脂質(zhì)體處理C57BL/6小鼠以耗竭巨噬細(xì)胞。對(duì)照小鼠接受對(duì)照脂質(zhì)體處理,所有小鼠隨后感染HSV-1。在存在巨噬細(xì)胞的情況下,感染后24小時(shí)HSV-1幾乎沒有復(fù)制(圖1b, c)。相比之下,在缺乏巨噬細(xì)胞的情況下,HSV-1復(fù)制非常迅速(圖1b, c)。HSV-1復(fù)制增強(qiáng)與巨噬細(xì)胞缺乏小鼠肝臟和脾臟中具有感染性的HSV-1產(chǎn)生相關(guān)(圖1d)。與病毒大量擴(kuò)散一致,巨噬細(xì)胞缺乏小鼠出現(xiàn)肝細(xì)胞損傷,并在感染后迅速死亡(圖1e, f)。為了分析不同感染途徑中巨噬細(xì)胞的重要性,我們通過陰道感染小鼠HSV-1,并分析HSV-1的局部復(fù)制和感染結(jié)局。局部HSV-1復(fù)制和感染性顆粒產(chǎn)生在對(duì)照小鼠和巨噬細(xì)胞耗竭小鼠之間相當(dāng)(圖1g, h)。然而,巨噬細(xì)胞耗竭小鼠在陰道感染后死亡,而對(duì)照小鼠則得到保護(hù)(圖1i)。這提示陰道中的巨噬細(xì)胞并不能限制早期的局部HSV-1復(fù)制,但巨噬細(xì)胞對(duì)于HSV-1的全身控制至關(guān)重要??傊?,我們發(fā)現(xiàn)巨噬細(xì)胞確實(shí)在防止全身HSV-1擴(kuò)散中發(fā)揮關(guān)鍵作用。

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論文信息:

論文題目:Acid ceramidase of macrophages traps herpes simplex virus in multivesicular bodies and protects from severe disease

期刊名稱:Nature Communications

時(shí)間期卷:11, Article number: 1338(2020)

在線時(shí)間:2020年3月12日

DOI: doi.org/10.1038/s41467-020-15072-8

  

產(chǎn)品信息:

貨號(hào):CP-005-005

規(guī)格:5ml+5ml

品牌:Liposoma

產(chǎn)地:荷蘭

名稱:Clodronate Liposomes& Control Liposomes

辦事處:Target Technology(靶點(diǎn)科技)


Clodronate Liposomes氯膦酸鹽脂質(zhì)體清除病毒模型中巨噬細(xì)胞 ,荷蘭Liposoma巨噬細(xì)胞清除劑ClodronateLiposomes見刊于Nature Communications:巨噬細(xì)胞的酸性神經(jīng)酰胺酶將單純皰疹病毒困在多囊泡體中,并防止嚴(yán)重疾病。

巨噬細(xì)胞的酸性神經(jīng)酰胺酶將單純皰疹病毒困在多囊泡體中,并防止嚴(yán)重疾病


Liposoma巨噬細(xì)胞清除劑Clodronate Liposomes氯膦酸二鈉脂質(zhì)體清除腫瘤相關(guān)巨噬細(xì)胞的材料和方法:

Reagents

D-erythro-sphingosine (C18, 860490) and D-Galactosyl-β1-1’-N-Nervonoyl-D-erythro-sphingosine (C24:1, β-D-Galactosyl Ceramide, 110759), were obtained from Avanti Polar Lipids (Alabaster, AL, USA). Glycoceramidase (E9030-100MUN), sphingomyelinase (S8633-25UN), Cy3-linked DBCO (777366-1?mg) and DAPI (D9542) were purchased from Millipore Sigma (Darmstadt, Germany). Recombinant mouse Asah2 (3558-AH) was purchased from R&D Systems (Minneapolis, MN, USA). The sphingosine kinase inhibitor SKI-II (CAS # 312636-16-1; Cat # 2097) was obtained from Tocris Bioscience (Bristol, United Kingdom) and tamoxifen (CAS # 10540-29-1, Cat # T5648-5G) and cornoil (CAS # 8001-30-7, Cat # C8267-500ML) from Millipore Sigma. Clodronate and control liposomes were purchased from Liposoma (CP-005-005, Amsterdam, Netherlands). Clickable ω-azido-sphingosine ((2S,3R,E)-2-amino-18-azidooctadec-4-ene-1,3-diol) for click chemistry42 staining was synthesized in-house by Julian Fink.


Depletion of macrophages

For macrophage-depleted mouse experiments, mice were treated intravenously with 50?mg/kg clodronate to deplete tissue resident macrophages. After 3 days, mice were ready to be used in experiments.


材料和方法文獻(xiàn)截圖:

巨噬細(xì)胞的酸性神經(jīng)酰胺酶將單純皰疹病毒困在多囊泡體中,并防止嚴(yán)重疾病

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