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Oral Soft Tissue Regeneration Using Nano Controlled System Inducing Sequential Release of Trichloroacetic Acid and Epidermal Growth Factor

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Tissue Engineering and Regenerative Medicine Aims and scope

Abstract

Background:

The effect of nano controlled sequential release of trichloroacetic acid (TCA) and epidermal growth factor (EGF) on the oral soft tissue regeneration was determined.

Methods:

Hydrophobically modified glycol chitosan (HGC) nano controlled system was developed for the sequential release of TCA and EGF, and the release pattern was identified. The HGC-based nano controlled release system was injected into the critical-sized defects created in beagles’ palatal soft tissues. The palatal impression and its scanned body was obtained on various time points post-injection, and the volumetric amount of soft tissue regeneration was compared among the three groups: CON (natural regeneration control group), EXP1 (TCA-loaded nano controlled release system group), EXP2 (TCA and EGF individually loaded nano controlled release system). DNA microarray analysis was performed and various soft tissue regeneration parameters in histopathological specimens were measured.

Results:

TCA release was highest at Day 1 whereas EGF release was highest at Day 2 and remained high until Day 3. In the volumetric measurements of impression body scans, no significant difference in soft tissue regeneration between the three groups was shown in two-way ANOVA. However, in the one-way ANOVA at Day 14, EXP2 showed a significant increase in soft tissue regeneration compared to CON. High correlation was determined between the histopathological results of each group. DNA microarray showed up-regulation of various genes and related cell signaling pathways in EXP2 compared to CON.

Conclusion:

HGC-based nano controlled release system for sequential release of TCA and EGF can promote regeneration of oral soft tissue defects.

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Acknowledgement

This research was supported by a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (Grant No. HI16C1838).

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Author notes

  1. Kwang Man Park and Hong Jae Lee have contributed equally to this work.

Authors and Affiliations

  1. Department of Dentistry, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea

    Kwang Man Park

  2. Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea

    Hong Jae Lee & Sang Cheon Lee

  3. Department of Periodontology and Dental Research Institute Translational Research Laboratory for Tissue Engineering (TTE), School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea

    Ki-Tae Koo & Heithem Ben Amara

  4. Department of Biomaterials and Prosthodontics, Kyung Hee University Hospital at Gangdong Institute of Oral Biology, School of Dentistry, Kyung Hee University, 892 Dongnam-ro, Gangdong-gu, Seoul, 05278, Republic of Korea

    Richard Leesungbok & Suk Won Lee

  5. Department of Prosthodontics, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea

    Kwantae Noh

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  1. Kwang Man Park
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  2. Hong Jae Lee
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Correspondence to Sang Cheon Lee or Suk Won Lee.

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The animal experiment protocol was approved by the Institutional Animal Care and Use Committee, Cronex, Hwasung-si, Gyeonggi-do, Republic of Korea (CRONEX-IACUC: 201803002).

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Park, K.M., Lee, H.J., Koo, KT. et al. Oral Soft Tissue Regeneration Using Nano Controlled System Inducing Sequential Release of Trichloroacetic Acid and Epidermal Growth Factor. Tissue Eng Regen Med 17, 91–103 (2020). https://doi.org/10.1007/s13770-019-00232-9

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