title: Cell proliferation and differentiation during the three dimensional reconstitution of eccrine sweat glands.
abstract: The aim of this study is to characterize the cell proliferation and proliferating cell types during three-dimensional reconstitution of eccrine sweat glands. Eccrine sweat gland cells suspended in Matrigel were injected subcutaneously into the inguinal regions of nude mice. At 1, 2, 4, 6, 8, 14, 21, 28, 35 and 42 days post-implantation, Matrigel plugs were immunostained for Ki67, to detect cycling cells, and the Ki67 labeling index at different time points was calculated. Three pairs of antibodies, Ki67/K7, Ki67/K14 and Ki67/α-SMA, were used to identify proliferating cell types in the plugs, on days 28, 35 and 42, by immunofluorescence double staining. The Ki67 labeling index on the first day of implantation was 30.53%, rapidly reached a peak value of 81.43% at 2 days post-implantation, and then decreased gradually to a low of 2.87% at 42 days. Double immunofluorescence staining showed that K14/Ki67 double-stained cells accounted for 80% of the Ki67-positive cells, whereas K7/Ki67 and α-SMA/Ki67 double-stained cells each accounted for 10% of the Ki67-positive population on days 28, 35, or 42 post-implantation. We conclude that eccrine sweat gland cells rapidly enter the cell cycle after implantation, but quickly show decreased cell proliferation and increased cell differentiation.
authors.affiliation: Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China.
authors.forename: Xuexue
authors.initials: X
authors.lastname: Li
authors.affiliation: Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China. lihaihong1051@126.com.|Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China. lihaihong1051@126.com.
authors.forename: Haihong
authors.initials: H
authors.lastname: Li
authors.affiliation: Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Burn and Plastic Surgery, The Second Affiliated Hospital, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China.
authors.forename: Liyun
authors.initials: L
authors.lastname: Chen
authors.affiliation: Research Center for Translational Medicine, Shantou University Medical College, North Dongxia Road, Shantou, 515041, Guangdong, People's Republic of China.
authors.forename: Bingna
authors.initials: B
authors.lastname: Zhang
mesh_terms: D000818:Animals; D002453:Cell Cycle; D002454:Cell Differentiation; D049109:Cell Proliferation; D002478:Cells, Cultured; D003094:Collagen; D004338:Drug Combinations; D004439:Eccrine Glands / Q000166:cytology* / Q000637:transplantation; D006801:Humans; D019394:Ki-67 Antigen / Q000032:analysis; D007797:Laminin; D051379:Mice; D008819:Mice, Nude; D011509:Proteoglycans; D013997:Time Factors
chemical_list: D004338:Drug Combinations; D019394:Ki-67 Antigen; D007797:Laminin; D011509:Proteoglycans; C059485:matrigel; D003094:Collagen
keywords: Cytodifferentiation; Eccrine sweat gland; Ki67; Matrigel; Proliferation; Three-dimensional reconstitution