Silk Sericin and Potential Application Areas

Abstract

Silk consists of two main proteins called fibroin (fibrous protein) and sericin (globular, glued protein). While fibroin is used in textile production and various biomaterial applications, sericin is considered as a waste material in the textile industry. Sericin is a multicomponent protein with an indefinite structure and has received less attention than fibroin, but it has been shown to be biocompatible and has biological activity. Sericin has interesting bioactive properties for biomedical applications with variable amino acid composition and various functional groups. Because of its antioxidant character, its moisturizing ability and its mitogenic effect on mammalian cells, in recent years, it has been shown that sericin is useful in cell culture and tissue engineering. In addition, the positive effects on keratinocytes and fibroblasts have led to the development of sericin-based biomaterials for the repair of skin tissue, especially for wound care materials. In addition, sericin has the potential to be used for bone tissue engineering because of its ability to induce bone-like hydroxyapatite nucleation. Stable silk sericin biomaterials such as films, sponges and hydrogels are prepared by cross-linking or mixing with other polymers. Sericin also has the potential to be used for drug release because its chemical reactivity and pH response facilitate the production of sericin-based nano-microparticles, hydrogels and conjugated molecules, and increase the bioactivity of drugs. In this study, the properties and usage areas of silk sericin, which is an important protein, are summarized.

Keywords

• Biomaterials
• Silk
• Sericin
• Fibroin

İpek Serisin ve Potansiyel Uygulama Alanları

Öz

İpek, fibroin (lifli protein) ve serisin (globüler, zamklama proteini) olarak isimlendirilen iki ana proteinden oluşmaktadır. Fibroin tekstil üretiminde ve çeşitli biyomateryal uygulamalarda kullanılırken, serisin tekstil endüstrisinde bir atık malzeme olarak kabul edilmektedir. Serisin, belirsiz bir yapıya sahip çok bileşenli bir protein olması nedeniyle, fibroinden daha az dikkat çekmiştir, ancak bu proteinin de biyolojik aktiviteye sahip olduğu ve biyouyumlu olduğu yapılan çalışmalarla gösterilmiştir. Serisin değişken amino asit bileşimi ve çeşitli fonksiyonel grupları ile  biyomedikal uygulamalar için ilgi çekici biyoaktif özelliklere sahiptir. Antioksidan karakteri, nemlendirme yeteneği ve memeli hücreleri üzerindeki mitojenik etkisi nedeniyle, serisinin hücre kültürü ve doku mühendisliğinde yararlı olduğu son yıllarda yapılan çalışmalarla gösterilmiştir. Ayrıca, keratinositler ve fibroblastlar üzerindeki olumlu etkileri, başta yara bakım malzemeleri olmak üzere deri dokusu onarımı için serisin bazlı biyomateryallerin gelişmesine yol açmıştır. Ek olarak, serisin, kemik benzeri hidroksiapatit nükleasyonunu indükleme kabiliyeti nedeniyle kemik doku mühendisliği için kullanılma potansiyeline de sahip olduğu gösterilmiştir. Filmler, süngerler ve hidrojeller gibi kararlı ipek serisin biyomateryalleri, çapraz bağlama veya diğer polimerler ile karıştırılarak hazırlanmaktadır. Serisin aynı zamanda ilaç salımı için de kullanılma potansiyeline sahiptir, çünkü kimyasal reaktivitesi ve pH yanıtı, serisin bazlı nano-mikropartiküllerin, hidrojellerin ve konjuge moleküllerin üretimini kolaylaştırmakta ve ilaçların biyoaktivitesini arttırmaktadır. Bu çalışmada, önemli bir protein olan ipek serisinin özellikleri ve kullanım alanları özetlenmiştir.

Anahtar Kelimeler

• Biyomateryal
• İpek
• Fibroin
• Serisin

Kaynakça

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