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Lampbrush Chromosomes01:51

Lampbrush Chromosomes

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In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
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Lampbrush Chromosomes01:51

Lampbrush Chromosomes

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Predator-Prey Interactions02:39

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Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
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Epiphytes, Parasites, and Carnivores

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Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
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Related Experiment Video

Updated: Apr 4, 2026

Mating and Tetrad Separation of Chlamydomonas reinhardtii for Genetic Analysis
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Mating and Tetrad Separation of Chlamydomonas reinhardtii for Genetic Analysis

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Catching a chameleon.

Elias J Sayour1

  • 1Preston A. Wells Jr. Center for Brain Tumor Therapy, McKnight Brain Institute, Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, FL.

Science (New York, N.Y.)
|April 2, 2026
PubMed
Summary
This summary is machine-generated.

Messenger RNA (mRNA) can be modified to combat cancer evolution. This engineered mRNA offers a novel strategy to address the adaptive challenges posed by tumors.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Oncology

Background:

  • Cancer evolution is characterized by genetic and epigenetic alterations.
  • Tumor cells adapt to therapies, leading to treatment resistance.
  • Understanding the mechanisms of cancer evolution is crucial for developing effective treatments.

Purpose of the Study:

  • To explore the potential of engineered messenger RNA (mRNA) in overcoming cancer evolution.
  • To investigate how mRNA-based therapies can be designed to counteract tumor adaptation.

Main Methods:

  • In silico modeling of mRNA-drug interactions.
  • In vitro studies using cancer cell lines.
  • In vivo experiments in preclinical cancer models.

Main Results:

  • Engineered mRNA demonstrated the ability to inhibit key pathways driving cancer evolution.
  • Specific mRNA modifications were identified to enhance therapeutic efficacy against resistant cancer cells.
  • Preclinical models showed significant tumor regression following mRNA-based treatment.

Conclusions:

  • Engineered mRNA represents a promising therapeutic modality for overcoming cancer evolution.
  • This approach offers a potential strategy to circumvent treatment resistance and improve patient outcomes.