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Related Concept Videos

Diversity of Archaea IV01:29

Diversity of Archaea IV

Hyperthermophilic archaea are a group of extremophiles thriving at temperatures above 80°C, often in hydrothermal vents and volcanic soils where conditions surpass the boiling point of water. At such temperatures, proteins, membranes, and DNA in most organisms degrade, but hyperthermophiles have evolved remarkable adaptations to maintain stability and function.Unique Cellular FeaturesHyperthermophilic membranes are composed of a monolayer of biphytanyl tetraether lipids, which resist thermal...
Increased Body Temperature01:25

Increased Body Temperature

A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in response to an infection or illness.
Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
Thermosensation01:43

Thermosensation

Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
Methods of reducing fever01:22

Methods of reducing fever

The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
Diversity of Archaea III01:27

Diversity of Archaea III

Crenarchaeota, a prominent phylum of Archaea, is remarkable for its ability to thrive in extreme environments characterized by high temperatures and acidity. These microorganisms inhabit sulfuric hot springs, volcanic systems, and submarine hydrothermal vents, where temperatures often exceed 100°C. The unique adaptations of Crenarchaeota not only allow survival under such extreme conditions but also provide insights into the mechanisms of life in primordial Earth-like environments.Morphological...

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Related Experiment Video

Updated: Jul 3, 2026

Inducing Targeted Mild Hyperthermia in Murine Tumor Models through Photothermal Conversion of Near-infrared Light by Intratumoral Gold Nanorods
09:23

Inducing Targeted Mild Hyperthermia in Murine Tumor Models through Photothermal Conversion of Near-infrared Light by Intratumoral Gold Nanorods

Published on: October 10, 2025

Temperature sensitive peptides: engineering hyperthermia-directed therapeutics.

J Andrew Mackay1, Ashutosh Chilkoti

  • 1Department of Biomedical Engineering, Duke University, Durham, NC 27708-028, USA.

International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group
|July 9, 2008
PubMed
Summary
This summary is machine-generated.

Short peptide motifs can be engineered into temperature-responsive biopolymers for drug delivery. Elastin-like polypeptides (ELPs) show promise as carriers that accumulate in tumors, enhancing hyperthermia-directed delivery.

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Area of Science:

  • Biotechnology
  • Materials Science
  • Drug Delivery

Background:

  • Short peptide motifs can be engineered into biopolymers with temperature-dependent properties.
  • These biopolymers offer potential for novel drug delivery systems.

Purpose of the Study:

  • To review peptide motifs capable of thermo-responsive behavior.
  • To summarize design approaches for using these peptides as drug carriers.
  • To focus on elastin-like polypeptides (ELPs) as a key example.

Main Methods:

  • Discussed four peptide motifs: leucine zippers, collagen, elastin, and silk.
  • Detailed the engineering of short peptide motifs into higher-order biopolymers.
  • Focused on elastin-like polypeptides (ELPs) and their phase transition behavior.

Main Results:

  • ELPs exhibit a sharp inverse phase transition upon heating, allowing for aggregation.
  • ELPs are biocompatible, biodegradable, and can be modified with chemotherapeutics.
  • ELP block copolymers form micelles in response to hyperthermia, and accumulate in tumors, doubling peptide concentration with heat.

Conclusions:

  • Temperature-sensitive peptides represent a powerful platform for drug delivery.
  • These peptides enable new strategies for hyperthermia-directed drug delivery.