Haihong Li1, Lu Chen2, Shaopeng Zeng2, Xuexue Li2, Xiang Zhang2, Changmin Lin3, Mingjun Zhang2, Sitian Xie2, Yunpu He2, Shenyou Shu2, Lvjun Yang4, Shijie Tang2, Xiaobing Fu5. 1. Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province 515041, PR China; Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province 515041, PR China. Electronic address: lihaihong1051@126.com. 2. Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province 515041, PR China. 3. Department of Histology and Embryology, Shantou University Medical College, 22 Xin Ling Road, Shantou, Guangdong Province 515041, PR China. 4. Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province 515041, PR China; Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, Guangdong Province 515041, PR China. 5. Burns Institute, The First Affiliated Hospital, Chinese PLA General Hospital, Trauma Center of Postgraduate Medical School, 51 Fucheng Road, Beijing 100037, PR China.
Abstract
BACKGROUND: Severe burn results in irreversible damage to eccrine sweat glands, for which no effective treatment is available. Interaction between the extracellular matrix and epithelial cells is critical for proper three-dimensional organization and function of the epithelium. METHODS: Matrigel-embedded eccrine sweat gland cells were subcutaneously implanted into the inguinal regions of nude mice. Two weeks later, the Matrigel plugs were removed and evaluated for series of detection items. RESULTS: Sweat gland cells developed into sweat gland-like structures in the Matrigel plugs based on: (1) de novo formation of tubular-like structures with one or more hollow lumens, (2) expression of epithelial and sweat gland markers (pancytokeratin, CK5/7/14/19, α-SMA and CEA), (3) basement membrane formation, (4) myoepithelial cells presenting in and encompassing the tubular-like structures, (5) cellular polarization, evident by the expression of tight junction proteins (claudin-1 and ZO-2), anchoring junctions (desmoglein-1 and -2 and E-cadherin) and CEA in the luminal membrane, (6) expression of proteins related to sweat secretion and absorption (Na(+)-K(+)-ATPase α/β, Na(+)-K(+)-2Cl-cotranspoter 1, Na(+)/H(+) exchanger 1, aquaporin-5, epithelial sodium channel, cystic fibrosis transmembrane conductance regulator, potassium channel and vacuolar-type H+-ATPase), and (7) about 20% of the tubular-like structures are de novo coils and 80% are de novo ducts. CONCLUSIONS: This study provides not only an excellent model to study eccrine sweat gland development, cytodifferentiation and reconstitution, but also an in vivo model for regeneration of eccrine sweat glands.
BACKGROUND: Severe burn results in irreversible damage to eccrine sweat glands, for which no effective treatment is available. Interaction between the extracellular matrix and epithelial cells is critical for proper three-dimensional organization and function of the epithelium. METHODS: Matrigel-embedded eccrine sweat gland cells were subcutaneously implanted into the inguinal regions of nude mice. Two weeks later, the Matrigel plugs were removed and evaluated for series of detection items. RESULTS: Sweat gland cells developed into sweat gland-like structures in the Matrigel plugs based on: (1) de novo formation of tubular-like structures with one or more hollow lumens, (2) expression of epithelial and sweat gland markers (pancytokeratin, CK5/7/14/19, α-SMA and CEA), (3) basement membrane formation, (4) myoepithelial cells presenting in and encompassing the tubular-like structures, (5) cellular polarization, evident by the expression of tight junction proteins (claudin-1 and ZO-2), anchoring junctions (desmoglein-1 and -2 and E-cadherin) and CEA in the luminal membrane, (6) expression of proteins related to sweat secretion and absorption (Na(+)-K(+)-ATPase α/β, Na(+)-K(+)-2Cl-cotranspoter 1, Na(+)/H(+) exchanger 1, aquaporin-5, epithelial sodium channel, cystic fibrosis transmembrane conductance regulator, potassium channel and vacuolar-type H+-ATPase), and (7) about 20% of the tubular-like structures are de novo coils and 80% are de novo ducts. CONCLUSIONS: This study provides not only an excellent model to study eccrine sweat gland development, cytodifferentiation and reconstitution, but also an in vivo model for regeneration of eccrine sweat glands.
Authors: Patricia Klaka; Sabine Grüdl; Bernhard Banowski; Melanie Giesen; Andrea Sättler; Peter Proksch; Thomas Welss; Thomas Förster Journal: PLoS One Date: 2017-08-10 Impact factor: 3.240