Related Experiment Video
Updated: Dec 18, 2025

09:37
A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
Published on: July 14, 2016
8.6K
Mouse Ptchd3 is a non-essential gene.
Shaimar R González Morales1, Chengjing Liu1, Heath Blankenship1
1Department of Biology, Marshall University, Huntington WV25755, USA.
Gene: X
|June 19, 2020
Summary
The patched domain containing 3 (Ptchd3) gene is not essential for mouse development or sperm production. Knockout mice lacking Ptchd3 showed normal growth, fertility, and spermatogenesis, indicating no significant role in these processes.
Area of Science:
- Reproductive biology
- Developmental biology
- Molecular genetics
Background:
- The patched domain containing 3 (Ptchd3) gene is specifically expressed in male germ cells.
- Ptchd3 protein is localized on the surface of sperm in mice, rats, and humans.
- The presence of a conserved patched domain suggests a potential role as a membrane receptor for hedgehog ligands.
Purpose of the Study:
- To investigate the function of Ptchd3 in mouse development and spermatogenesis.
- To determine if Ptchd3 plays a role in the hedgehog signaling pathway.
Main Methods:
- Generation and analysis of a Ptchd3 knockout mouse model.
- Assessment of developmental and reproductive phenotypes in knockout mice.
- Evaluation of gene expression levels in the testes of mutant mice.
Main Results:
- Ptchd3 knockout mice exhibited normal development and survival.
- Male knockout mice showed no alterations in fertility or sperm production.
- Expression levels of key hedgehog signaling pathway genes remained unaffected in the mutant testes.
Conclusions:
- Ptchd3 is not essential for normal mouse development.
- Ptchd3 does not appear to play a critical role in spermatogenesis or male fertility.
- The function of Ptchd3 in relation to hedgehog signaling in male germ cells requires further investigation.
Related Concept Videos
In-vitro Mutagenesis
15.9K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
15.9K
Hedgehog Signaling Pathway
9.5K
The Hedgehog gene (Hh) was first discovered due to its control of the growth of disorganized, hair-like bristles phenotype in Drosophila, much like hedgehog spines. Hh plays a crucial role in the development of organs and the maintenance of homeostasis in both invertebrates and vertebrates. However, while Drosophila has only one Hh protein, mammals have multiple functional Hedgehog proteins - Sonic (Shh), Desert (Dhh), and Indian Hedgehog (Ihh). All of these homologous proteins have adapted to...
9.5K

