A Single-chain Antibody for One-pot Fabrication of Luminescent Gold Nanoclusters and Rabies Virus Imaging in Cells

The fragile antibody leads to a great challenge as a scaffold to fabricate the luminescent metal nanoclusters using one-pot method.This study presents a stable single-chain anti-body(scFv57R-ATS)for the fabrication of luminescent gold nanoclusters(AuNCs@scFv57R-ATS)and a quick,sensitive rabies virus detection in living cells.In this paper,AuNCs@scFv57R-ATS was designed to specifically recognize antigen RV in modified HeLa cells,which promoted the demonstration of metal nanocluster fluorescent probes for antigen targeting and therapy.

鹿茸总多肽对维A酸致骨质疏松大鼠的防治作用

目的观察鹿茸总多肽(TVAP)对维A酸诱导大鼠骨质疏松的影响。方法通过ig维A酸70 mg.kg-1.d-1,连续14d,建立大鼠骨质疏松模型。造模同时sc TVAP 60,40,20 mg.kg-1.d-1,治疗30 d后,处死动物。取血分离血清,测定血清钙(Ca)、磷(P)、碱性磷酸酶(ALP);取左侧股骨,计算骨重系数和测定骨Ca,P含量;取右侧股骨,测定中段和下1/3处骨密度;取左侧胫骨,做骨组织形态计量测定。结果与模型组比较,TVAP明显改善维A酸诱导大鼠的骨Ca含量降低(P<0.01),骨重系数下降(P<0.001)和骨密度降低(P<0.05,P<0.01)以及骨病理形态发生的明显改变:平均骨小梁宽度(MTPT)变窄(P<0.001)、平均骨小梁间距(MTPS)变大(P<0.05)、松质骨体积(TBV)降低(P<0.01)等骨质疏松改变。但对血中反映骨代谢状况的生化指标Ca,P含量和ALP活性无明显影响。结论TVAP能纠正维A酸所致骨重建的负平衡状态,使骨量增加,骨组织显微结构趋于正常,对大鼠骨质疏松有防治作用。