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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
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Related Experiment Video

Updated: Apr 26, 2026

Quantification of Hypopigmentation Activity In Vitro
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Published on: March 6, 2019

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Ion transport in pigmentation.

Nicholas W Bellono1, Elena V Oancea1

  • 1Department of Molecular Physiology, Pharmacology and Biotechnology, Brown University, Providence, RI 02912, United States.

Archives of Biochemistry and Biophysics
|July 19, 2014
PubMed
Summary
This summary is machine-generated.

Ion transport is crucial for melanin production in specialized cells. Understanding these mechanisms in melanosomes may reveal new insights into pigmentation and related disorders.

Keywords:
Ion channelMelanocyteMelanosomePigmentationTransporter

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Genetics

Background:

  • Melanosomes are organelles in pigment cells responsible for melanin synthesis.
  • Defects in melanin synthesis lead to vision and pigmentation issues, and increased cancer risk.
  • The role of ion transport in melanin regulation is not fully understood.

Purpose of the Study:

  • To review ion channels and transporters involved in melanocyte function.
  • To explore ion transport across organelle membranes, particularly melanosomes.
  • To discuss molecular mechanisms of ion transport in pigmentation.

Main Methods:

  • Literature review of studies on ion transport and pigmentation.
  • Analysis of ion channels and transporters in melanocytes, lysosomes, endosomes, and melanosomes.
  • Discussion of molecular mechanisms and their relation to pigmentation phenotypes.

Main Results:

  • Ion transport across plasma and organelle membranes is critical for pigmentation.
  • Lysosomal and endosomal ion channels/transporters are linked to pigmentation phenotypes.
  • Evidence suggests melanosomal channels and transporters are vital for melanin production.

Conclusions:

  • Ion transport plays a key role in melanogenesis and pigmentation.
  • Further research into melanosomal ion transport can uncover novel mechanisms.
  • Understanding these processes may lead to new therapeutic targets for pigmentation disorders.