In the past decades,many materials have been studied as carriers for targeted drug delivery.However,there is a need for utilizable and selective carrier materials with few side effects.Here,the magnetic Ganoderma Luci...In the past decades,many materials have been studied as carriers for targeted drug delivery.However,there is a need for utilizable and selective carrier materials with few side effects.Here,the magnetic Ganoderma Lucidum Spores(mGLS)as a highly efficient targeted drug delivery carrier were explored.Then the regulatable targeted drug delivery system was verified by loading and releasing of the 5-Fluorouracil(5-FU).The results showed that the maximum of the loaded 5-FU reached 250.23 mg·g^(−1)in the mGLS.The cumulative release of the 5-FU for the drug delivery system could reach 80.11%and 67.14%in the PBS and HCl after 48 h,respectively.In addition,this system showed the good pharmacokinetic properties in vivo.After 12 h,the blood concentration in the 5-FU@mGLS group kept at 5.3µg·mL^(−1)and was four times higher than that in the 5-FU group.In summary,the GLS as a natural microscale core-shell structures appears the striking application in carrier material for oral drug delivery.展开更多
The C-type lectin MGL is a pathogen recognition receptor, expressed by dendritic cells (DCs) and macrophages (Mfs), able to bind GalNAc (Tn) carrying structures. This receptor also recognized Tn-TAAs that were interna...The C-type lectin MGL is a pathogen recognition receptor, expressed by dendritic cells (DCs) and macrophages (Mfs), able to bind GalNAc (Tn) carrying structures. This receptor also recognized Tn-TAAs that were internalized, processed and presented by DCs to T cells and it acted as an adjuvant on DCs, highlighting its possible application in anti-cancer vaccination. In this work, we found that this receptor present a seasonal modulation: its expression is higher in winter rather than in summer. The percentage of MGL+ donors displayed a negative trend that dropped to 33% during the summer and increased up to 100% in winter. This modulation could be also ascribed to the circa-annual variation of glucocorticoids, in fact MGL is up-regulated in presence of dexamethasone in vitro. The seasonal variation of this receptor could be an important point in the field of tumor vaccination strategies.展开更多
[目的]探讨乳腺癌细胞分泌琥珀酸盐促进巨噬细胞极化的潜在机制。[方法]不同乳腺癌细胞系或正常乳腺上皮细胞的培养上清培养人巨噬细胞后,分析TAM标志物Arg1、Fizz1、Mgl1的表达以及巨噬细胞极化为TAM水平。检测乳腺癌细胞和正常乳腺上...[目的]探讨乳腺癌细胞分泌琥珀酸盐促进巨噬细胞极化的潜在机制。[方法]不同乳腺癌细胞系或正常乳腺上皮细胞的培养上清培养人巨噬细胞后,分析TAM标志物Arg1、Fizz1、Mgl1的表达以及巨噬细胞极化为TAM水平。检测乳腺癌细胞和正常乳腺上皮细胞中琥珀酸盐的水平并评估其对巨噬细胞极化为TAM的影响。分子对接和表面等离子共振分析琥珀酸与琥珀酸受体(SUCNR1)的结合位点。[结果]乳腺癌细胞上清培养的巨噬细胞中TAM标志物的表达水平上升(1.00±0.08 vs 19.71±1.80,P<0.05),并且巨噬细胞极化为TAM的水平上升(1.00±0.10 vs 4.89±0.44,P<0.05)。乳腺癌细胞上清中琥珀酸的水平显著上升[(0.09±0.01 vs 0.63±0.04)mmol/L,P<0.05]。不同浓度琥珀酸处理后,巨噬细胞中TAM标志物的表达水平呈浓度依赖性上升(1.00±0.01 vs 26.14±0.21,P<0.05),并且巨噬细胞极化为TAM的水平上升(1.00±0.04 vs 4.10±0.23,P<0.05)分子对接和表面等离子共振显示琥珀酸盐与SUCNR1结合于R81、N173和S178位点。[结论]乳腺癌细胞分泌的琥珀酸盐与巨噬细胞SUCNR1的R81、N173和S178结合后促进了巨噬细胞发生M2极化为TAM(1.00±0.10 vs 4.89±0.44)。展开更多
基金This work was supported by National Key R&D Program of China(No.2018YFB1105400)Jilin Provincial Science and Technology Program(Nos.20190702002GH,2020C022-1,and YDZJ202102CXJD 007)Programme of Introducing Talents of Discipline to Universities(D17017).
文摘In the past decades,many materials have been studied as carriers for targeted drug delivery.However,there is a need for utilizable and selective carrier materials with few side effects.Here,the magnetic Ganoderma Lucidum Spores(mGLS)as a highly efficient targeted drug delivery carrier were explored.Then the regulatable targeted drug delivery system was verified by loading and releasing of the 5-Fluorouracil(5-FU).The results showed that the maximum of the loaded 5-FU reached 250.23 mg·g^(−1)in the mGLS.The cumulative release of the 5-FU for the drug delivery system could reach 80.11%and 67.14%in the PBS and HCl after 48 h,respectively.In addition,this system showed the good pharmacokinetic properties in vivo.After 12 h,the blood concentration in the 5-FU@mGLS group kept at 5.3µg·mL^(−1)and was four times higher than that in the 5-FU group.In summary,the GLS as a natural microscale core-shell structures appears the striking application in carrier material for oral drug delivery.
文摘The C-type lectin MGL is a pathogen recognition receptor, expressed by dendritic cells (DCs) and macrophages (Mfs), able to bind GalNAc (Tn) carrying structures. This receptor also recognized Tn-TAAs that were internalized, processed and presented by DCs to T cells and it acted as an adjuvant on DCs, highlighting its possible application in anti-cancer vaccination. In this work, we found that this receptor present a seasonal modulation: its expression is higher in winter rather than in summer. The percentage of MGL+ donors displayed a negative trend that dropped to 33% during the summer and increased up to 100% in winter. This modulation could be also ascribed to the circa-annual variation of glucocorticoids, in fact MGL is up-regulated in presence of dexamethasone in vitro. The seasonal variation of this receptor could be an important point in the field of tumor vaccination strategies.
文摘[目的]探讨乳腺癌细胞分泌琥珀酸盐促进巨噬细胞极化的潜在机制。[方法]不同乳腺癌细胞系或正常乳腺上皮细胞的培养上清培养人巨噬细胞后,分析TAM标志物Arg1、Fizz1、Mgl1的表达以及巨噬细胞极化为TAM水平。检测乳腺癌细胞和正常乳腺上皮细胞中琥珀酸盐的水平并评估其对巨噬细胞极化为TAM的影响。分子对接和表面等离子共振分析琥珀酸与琥珀酸受体(SUCNR1)的结合位点。[结果]乳腺癌细胞上清培养的巨噬细胞中TAM标志物的表达水平上升(1.00±0.08 vs 19.71±1.80,P<0.05),并且巨噬细胞极化为TAM的水平上升(1.00±0.10 vs 4.89±0.44,P<0.05)。乳腺癌细胞上清中琥珀酸的水平显著上升[(0.09±0.01 vs 0.63±0.04)mmol/L,P<0.05]。不同浓度琥珀酸处理后,巨噬细胞中TAM标志物的表达水平呈浓度依赖性上升(1.00±0.01 vs 26.14±0.21,P<0.05),并且巨噬细胞极化为TAM的水平上升(1.00±0.04 vs 4.10±0.23,P<0.05)分子对接和表面等离子共振显示琥珀酸盐与SUCNR1结合于R81、N173和S178位点。[结论]乳腺癌细胞分泌的琥珀酸盐与巨噬细胞SUCNR1的R81、N173和S178结合后促进了巨噬细胞发生M2极化为TAM(1.00±0.10 vs 4.89±0.44)。
