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conferenceseries.com
Volume 7, Issue 2 (Suppl) J Biotechnol Biomater
ISSN: 2155-952X JBTBM, an open access journal Biomaterials 2017
March 27-28, 2017
2nd Annual Conference and Expo on
March 27-28, 2017 Madrid, Spain
Na Keum Jang et al., J Biotechnol Biomater 2017, 7:2 (Suppl)
Dissolving microneedles: An attractive approach to transdermal drug delivery
Na Keum Jang, Jung Dong Kim, Hong Kee Kim, Boo Yong Lee, Tae Hyung Kim, Jung Hyun Bae, Yang Gi Lee, Moon Su Lee, Seong Jin Kim and Do Hyun Jung
Raphas Co. Ltd., South Korea
The microneedle-mediated transdermal delivery system has been developed to provide minimal invasive self-administration
method with patient friendly manner. Especially, dissolving microneedles, which deliver the target drugs as the drug-loaded
microneedle dissolves into the skin, have been spotlighted recently. Droplet-born air blowing (DAB) fabrication method has
advantages in stability with precise dose control because DAB provides quick manufacturing process with ambient temperature. The
purpose of this study is to show the characteristics of dissolving microneedles, which were manufactured in our mass production
system. Microneedle was fabricated by DAB method. The loaded amount of vitamin C and vitamin B3 was analyzed by HPLC/UV
system was used to assay the loaded amount within microneedles; and delivered amount of drug into the skin was analyzed using
Franz diffusion cell (Logan, FDC-6T). We optimized the DAB process parameters and scaled up. 350 µm and 500 µm length of HA
microneedles were fabricated and dried within 10 min without applying any heat. The stability of EGF within HA microneedle was
investigated during 2 months at 25, 45°C and was confirmed. The anti-oxidant was stable within HA microneedle during 2 months
at 25°C and 45°C. In vitro and ex vivo studies using Franz diffusion cell showed excellent delivery efficiency compared to topical
solution. Most of the loaded anti-oxidants was delivered through the skin after 24 hr (98.0±2.0%, n=3). The microneedles dissolution
in skin was confirmed, so the drugs within microneedle should be delivered into the intradermal region. Based on the method, we
loaded lots of active ingredients with precise dose control, and confirmed the stability of labile drugs such as peptide drugs and anti-
oxidants within microneedles. We are investigating the formulations for biopharmaceutics using this platform technology.
Biography
Na Keum Jang received her BS degree in Animal Biotechnology and MS degree at the Department of BIN Fusion Technology, Chonbuk National University,
Republic of Korea. Her research interest includes synthesis of polymeric biomaterials for regenerative medicine and sensors applications. Now she is studying
microneedle patch for transdermal drug delivery system at Raphas Co. Ltd.