Related Experiment Video

Updated: Jun 2, 2026

Generation of Integration-free Human Induced Pluripotent Stem Cells Using Hair-derived Keratinocytes
08:36

Generation of Integration-free Human Induced Pluripotent Stem Cells Using Hair-derived Keratinocytes

Published on: August 20, 2015

Ageing processes influence keratin and KAP expression in human hair follicles

Melanie Giesen, Sabine Gruedl, Olaf Holtkoetter

    Experimental Dermatology
    |May 17, 2011
    PubMed

    More Related Videos

    Characterization of In Vitro Differentiation of Human Primary Keratinocytes by RNA-Seq Analysis07:29

    Characterization of In Vitro Differentiation of Human Primary Keratinocytes by RNA-Seq Analysis

    Published on: May 16, 2020

    Generation and Culturing of Primary Human Keratinocytes from Adult Skin10:42

    Generation and Culturing of Primary Human Keratinocytes from Adult Skin

    Published on: December 22, 2017

    Related Concept Videos

    Accessory Structures of the Skin: Hair Growth and Types01:20

    Accessory Structures of the Skin: Hair Growth and Types

    Hair growth begins with the production of keratinocytes by the basal cells of the hair bulb. As new cells are deposited at the hair bulb, the hair shaft is pushed through the follicle toward the surface. Keratinization is completed as the cells are pushed to the skin surface to form the shaft of hair that is externally visible. The external hair is completely dead and composed entirely of keratin. Hair can be cut or shaven without damaging the hair structure because the cut is superficial. Most...
    The Effect of Aging on Tissues01:19

    The Effect of Aging on Tissues

    Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
    Renewal of Skin Epidermal Stem Cells01:12

    Renewal of Skin Epidermal Stem Cells

    The skin is divided into epidermis, dermis, and hypodermis, the skin's outermost, middle, and inner layers. The human epidermal layer regularly undergoes renewal, where old, dead cells are replaced by new cells. Epidermal stem cells or EpiSCs divide and differentiate to restore the lost cells. For the renewal process, some EpiSCs continuously self-renew. In contrast, few others differentiate into transit-amplifying cells, which later form prickle or spinous cells, followed by granular cells,...
    Cells of the Epidermis01:24

    Cells of the Epidermis

    The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
    The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...
    Multipotency and Niche of Bulge Stem Cell01:06

    Multipotency and Niche of Bulge Stem Cell

    A hair follicle or HF is a small part of the skin that produces the hair shaft. Paul Gerson Unna was the first to observe a bulge in the human hair follicle's outer root sheath (ORS). The bulge is present between the sebaceous gland and the arrector pili muscle and is the niche for hair follicle stem cells (HFSCs). The bulge is also a niche for melanocyte stem cells, and their loss results in graying of hair. The HFSCs express Sox9 and Lhx2, which help them maintain stemness and prevent...
    Accessory Structures of the Skin: Hair and Hair Follicles01:16

    Accessory Structures of the Skin: Hair and Hair Follicles

    Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet.
    Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...