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Related Concept Videos

Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

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The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
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Signal Transduction: Overview01:26

Signal Transduction: Overview

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Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
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Types of Signaling Molecules01:32

Types of Signaling Molecules

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In multicellular organisms, many molecules transmit signals between cells to pass information. These signals vary in complexity and include small peptides, nucleotides, steroids, fatty acid derivatives, and dissolved gases such as nitric oxide. Some signaling molecules diffuse through the plasma membrane to act locally between neighboring cells or travel long distances. Others remain attached to the cell surface, transmitting information to other cells only when they make contact. In some...
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Forced Transdifferentiation01:28

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Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
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Chemical Signaling in the Endocrine System01:08

Chemical Signaling in the Endocrine System

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A signaling cascade is a series of events that facilitates the transmission of information within or between cells, culminating in a targeted response in the recipient cell. As chemical messengers, hormones are pivotal in initiating and modulating these intricate signaling cascades based on their solubility.
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Amplifying Signals via Enzymatic Cascade01:22

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When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
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Related Experiment Video

Updated: Feb 24, 2026

Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development
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Small molecule-induced cellular conversion.

Debojyoti De1, Debasish Halder, Injae Shin

  • 1Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 16419, Korea. kyeongkyu@skku.edu.

Chemical Society Reviews
|August 23, 2017
PubMed
Summary

Small molecules offer a safe and precise method for cell fate conversion, overcoming genetic manipulation risks. This review explores small molecule discovery and applications for cell reprogramming in research and therapy.

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Area of Science:

  • Cell biology
  • Regenerative medicine
  • Chemical biology

Background:

  • Cell fate conversion is crucial for biological research and therapeutic applications.
  • Genetic manipulation for cell reprogramming faces safety concerns due to unpredictable side effects.
  • Chemical approaches using small molecules offer precise control and clinical safety for cell fate modulation.

Purpose of the Study:

  • To review methods for identifying small molecules that induce cellular conversion.
  • To highlight recent advancements in using small molecule modulators for cell fate changes.

Main Methods:

  • Literature review of small molecule-based cell conversion strategies.
  • Analysis of methods for small molecule identification and screening.
  • Summary of recent studies employing small molecules for cell reprogramming.

Main Results:

  • Small molecule-based approaches provide a safer, more controllable alternative to genetic methods.
  • Various methods have been developed to discover small molecules capable of inducing cell fate changes.
  • Significant progress has been made in applying small molecules to reprogram cells for diverse applications.

Conclusions:

  • Small molecule-driven cell fate conversion presents a promising avenue for regenerative medicine.
  • The ease of application, reproducibility, and scalability of small molecules enhance their therapeutic potential.
  • Further research into small molecule modulators will advance cell reprogramming technologies.