Photoprotective efficiency of PLGA-curcumin nanoparticles versus curcumin through the involvement of ERK/AKT pathway under ambient UV-R exposure in HaCaT cell line

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• 作者：Deepti Chopra^a ; ^c ; Lipika Ray^a ; ¹ ; Ashish Dwivedi^a ; ¹ ; Shashi Kant Tiwari^a ; ^b ; Jyoti Singh^a ; ^b ; Krishna P. Singh^a ; Hari Narayan Kushwaha^a ; Sadaf Jahan^a ; ^b ; Ankita Pandey^a ; Shailendra K. Gupta^a ; ^b ; ^e ; Rajnish Kumar Chaturvedi^a ; ^b ; Aditya Bhushan Pant^a ; ^b ; ^{abpant@iitr.res.in" class="auth_mail" title="E-mail the corresponding author} ; ^{abpant@rediffmail.com" class="auth_mail" title="E-mail the corresponding author} ; Ratan Singh Ray^a ; ^b ; ^{ratanray.2011@rediffmail.com" class="auth_mail" title="E-mail the corresponding author} ; Kailash Chand Gupta^a ; ^d ; ^f ; ^{kcgupta@iitk.ac.in" class="auth_mail" title="E-mail the corresponding author} ; ^{kcgupta9@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Phototoxicity ; Photodegradation ; Nanoformulation ; Curcumin ; Apoptosis/necrosis ; Photoprotection
• 刊名：Biomaterials
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：84
• 期：Complete
• 页码：25-41
• 全文大小：5555 K

文摘

Curcumin (Cur) has been demonstrated to have wide pharmacological window including anti-oxidant and anti-inflammatory properties. However, phototoxicity under sunlight exposure and poor biological availability limits its applicability. We have synthesized biodegradable and non-toxic polymer-poly (lactic-co-glycolic) acid (PLGA) encapsulated formulation of curcumin (PLGA-Cur-NPs) of 150 nm size range. Photochemically free curcumin generates ROS, lipid peroxidation and induces significant UVA and UVB mediated impaired mitochondrial functions leading to apoptosis/necrosis and cell injury in two different origin cell lines viz., mouse fibroblasts-NIH-3T3 and human keratinocytes-HaCaT as compared to PLGA-Cur-NPs. Molecular docking studies suggested that intact curcumin from nanoparticles, bind with BAX in BIM SAHB site and attenuate it to undergo apoptosis while upregulating anti-apoptotic genes like BCL2. Real time studies and western blot analysis with specific phosphorylation inhibitor of ERK1 and AKT1/2/3 confirm the involvement of ERK/AKT signaling molecules to trigger the survival cascade in case of PLGA-Cur-NPs. Our finding demonstrates that low level sustained release of curcumin from PLGA-Cur-NPs could be a promising way to protect the adverse biological interactions of photo-degradation products of curcumin upon the exposure of UVA and UVB. Hence, the applicability of PLGA-Cur-NPs could be suggested as prolonged radical scavenging ingredient in curcumin containing products.