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Related Concept Videos

Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
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Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...
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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
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Regeneration is the process of restoring injured or lost tissues, organs, or body parts. While simpler organisms generally show greater ability to regenerate their whole body, few complex animals show similarly exceptional regeneration. For example, planarian flatworms have a unique regenerative potential making them a popular study organism among biologists to understand the mechanisms of whole body regeneration. Other organisms, such as hydra, also show extreme regeneration potential;...
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After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
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Re-engineering development to instruct tissue regeneration.

Beatrice Tonnarelli1, Matteo Centola1, Andrea Barbero1

  • 1Department of Biomedicine, University of Basel, Tissue engineering group, Hebelstrasse Basel, Switzerland; Department of Surgery, University Hospital Basel, Tissue engineering group, Hebelstrasse Basel, Switzerland.

Current Topics in Developmental Biology
|February 12, 2014
PubMed
Summary
This summary is machine-generated.

Conventional tissue engineering has limited success. A new "developmental RE-engineering" approach aims to overcome adult biological barriers for predictable skeletal regeneration.

Keywords:
Bone tissue engineeringDevelopmental engineeringEndochondral ossificationLimb development

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Area of Science:

  • Regenerative Medicine
  • Developmental Biology
  • Biomedical Engineering

Background:

  • Conventional tissue engineering (cells, scaffolds, factors) shows limited clinical impact.
  • Mimicking developmental processes inspired a
  • developmental engineering
  • paradigm for skeletal regeneration.
  • Adult recipient sites present challenges (progenitor function, mechanical/immune factors) incompatible with developmental processes.

Purpose of the Study:

  • To propose a novel
  • developmental RE-engineering
  • paradigm for tissue regeneration.
  • To address limitations of current approaches in adult regenerative contexts.
  • To enable predictable, orderly, and durable tissue regeneration.

Main Methods:

  • Conceptual framework development.
  • Analysis of developmental biology principles.
  • Evaluation of adult tissue microenvironment constraints.

Main Results:

  • Identified incompatibility of adult recipient sites with standard developmental processes.
  • Highlighted the need to adapt developmental programs for adult systems.
  • Proposed a new paradigm to instruct developmental execution within adult constraints.

Conclusions:

  • Tissue regeneration requires adapting developmental programs to adult biological conditions.
  • The proposed
  • developmental RE-engineering
  • paradigm offers a path toward predictable skeletal regeneration.
  • Further research is needed to translate this paradigm into clinical applications.