Three-Dimensional Hydrogel-Based Culture to Study the Effects of Toxicants on Ovarian Follicles

Hong Zhou1, Ariella Shikanov2,3

  • 1Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.

Insights

This study introduces a novel 3D hydrogel system for culturing ovarian follicles. This fibrin alginate interpenetrating network (FA-IPN) system allows researchers to monitor follicle health by tracking fibrin degradation, aiding ovotoxicity studies.

Area of Science:

  • Reproductive biology
  • Toxicology
  • Biomaterials science

Background:

  • Ovarian toxicity from toxicants poses a risk to reproductive health.
  • Ovarian follicles are sensitive to toxicant-induced damage.
  • In vitro models are needed to study ovotoxicity and follicle development.

Purpose of the Study:

  • To describe a 3D hydrogel system for in vitro ovarian follicle culture.
  • To establish a method for evaluating ovotoxicity using follicle health indicators.
  • To demonstrate the utility of fibrin degradation as a reporter for follicle health.

Main Methods:

  • Isolation and encapsulation of mouse ovarian follicles within fibrin alginate interpenetrating networks (FA-IPNs).
  • In vitro culture of encapsulated follicles to monitor growth and development.
  • Utilizing the proteolytic degradation of the fibrin component within the hydrogel as a quantitative measure of follicle health and response to toxicants.
  • Modulating fibrin degradation rates using aprotinin to control the reporter system.

Main Results:

  • FA-IPNs successfully support the in vitro culture of ovarian follicles.
  • Fibrin degradation within the FA-IPN serves as a reliable indicator of follicle growth and health.
  • The system allows for the evaluation of toxicant effects on folliculogenesis.
  • Aprotinin can be used to modulate the rate of fibrin degradation, enhancing system control.

Conclusions:

  • The described FA-IPN system provides a robust platform for studying ovarian follicle development and ovotoxicity in vitro.
  • Fibrin degradation is a valuable surrogate marker for assessing follicle health and toxicant impact.
  • This 3D culture model offers a promising tool for reproductive toxicology research.

Related Concept Videos

Dimensional Analysis03:40

Dimensional Analysis

Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
65.2K
Buffer Effectiveness02:19

Buffer Effectiveness

Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
55.6K
Ovarian Cycle01:27

Ovarian Cycle

The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
4.2K
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
2.1K
Sputum Studies II: Culture and Sensitivity01:20

Sputum Studies II: Culture and Sensitivity

Description
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
1.3K
Framing Effects03:26

Framing Effects

Information is everywhere and its presentation—such as how and when items are presented—can impact our perceptions and decisions surrounding the info. This broad concept umbrellas framing effects—influences that occur due to the way information is framed in its appearance, whether it’s purely the order or the specific wording of a message. Let’s take a look at numerous ways in which two versions of something can objectively say the same thing, yet we respond in...
8.0K