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Bacterial Protein Maturation01:26

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Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
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Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
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Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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The early endosome containing internalized molecules matures through transformations in its location, morphology, intraluminal pH, and membrane protein composition. Together, these changes result in a more acidic late endosome that contains multiple intraluminal vesicles; therefore, the late endosome is also called a multivesicular body (MVB).
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The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
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Cell maturation: Hallmarks, triggers, and manipulation.

Juan R Alvarez-Dominguez1, Douglas A Melton2

  • 1Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA.

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|January 7, 2022
PubMed
Summary
This summary is machine-generated.

Cell maturation is a dynamic process, not a fixed endpoint, influenced by genetics and environment. Understanding these adaptive states aids disease research and regenerative medicine.

Keywords:
biomaterialscell maturitycircadian rhythmsdirected stem cell differentiationenergy metabolismmachine–tissue interfacesmicrofluidic chipsnanotechnologyorganoidstissue anatomy and physiology

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Area of Science:

  • Cell biology
  • Developmental biology
  • Regenerative medicine

Background:

  • Cellular specialization, or maturation, is crucial for understanding cell and developmental biology.
  • Maturation is often viewed as a terminal state, but it may be more accurately described as a dynamic continuum of adaptive phenotypic states.
  • These states are shaped by genetic and environmental programming.

Purpose of the Study:

  • To reframe cellular maturation as a dynamic continuum rather than a terminal fate.
  • To explore the anatomical and physiological hallmarks of cellular maturity.
  • To discuss the potential applications of harnessing maturation triggers in research and medicine.

Main Methods:

  • Reviewing existing literature on cell maturation.
  • Analyzing the genetic and environmental factors influencing maturation.
  • Discussing the chemical (nutrients, oxygen, growth factors) and physical (mechanical, spatial, electrical) triggers of maturation in vitro and in vivo.

Main Results:

  • Cellular maturation involves significant changes in anatomy (form, gene circuitry, interconnectivity) and physiology (function, rhythms, proliferation).
  • These changes confer adaptive behaviors crucial for organismal development and function.
  • Chemical and physical triggers can be harnessed to influence maturation processes.

Conclusions:

  • Cellular maturation should be understood as a dynamic adaptive continuum, not a static endpoint.
  • Harnessing maturation strategies offers promising avenues for advancing disease research.
  • Maturation-focused approaches hold significant potential for regenerative medicine applications.