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Related Concept Videos

Development of Immunocompetence01:22

Development of Immunocompetence

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The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
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Introduction to Innate and Adaptive Immunity01:21

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The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
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Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Renewal of Skin Epidermal Stem Cells01:12

Renewal of Skin Epidermal Stem Cells

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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...
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Development of the Lymphatic System01:15

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The development of lymphatic tissues and vessels in embryonic life begins around the fifth week. These structures originate from the mesoderm layer, with lymph sacs emerging from developing veins.
The first lymph sacs to form are the paired jugular lymph sacs located at the junction of the internal jugular and subclavian veins. From these sacs, lymphatic capillary plexuses extend to the thorax, upper limbs, neck, and head, eventually forming lymphatic vessels. Each jugular lymph sac maintains a...
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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Preparation of Single-cell Suspensions for Cytofluorimetric Analysis from Different Mouse Skin Regions
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The developing immune network in human prenatal skin.

Rachel Anne Botting1, Muzlifah Haniffa1,2,3

  • 1Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK.

Immunology
|March 17, 2020
PubMed
Summary
This summary is machine-generated.

The developing human skin features an anti-inflammatory immune microenvironment crucial for structural maturation and wound healing. This specialized immune network supports skin barrier function throughout life.

Keywords:
haematopoiesisimmune homeostasisregulation/suppressionskin

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Area of Science:

  • Immunology
  • Developmental Biology
  • Dermatology

Background:

  • A functional skin immune network is vital for barrier integrity.
  • Skin immunity develops throughout the human lifespan, starting in utero.
  • The developing skin's microenvironment influences immune cell maturation.

Purpose of the Study:

  • To investigate the characteristics of the immune microenvironment in developing human skin.
  • To understand the role of skin immunity in structural skin development and wound healing.

Main Methods:

  • Analysis of immune cell populations and their functions in developing human skin.
  • Characterization of the skin's immune microenvironment during development.

Main Results:

  • Developing human skin exhibits an anti-inflammatory immune profile.
  • Immune cell populations in developing skin are skewed and promote wound healing.
  • The immune microenvironment supports structural differentiation and maturation of the skin.

Conclusions:

  • The unique immune environment of developing skin is essential for its structural development.
  • Immunologically distinct skin supports efficient wound repair, contributing to developmental processes.