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Renal morphology in connexin43 knockout mice
D M Silverstein1, M Urban, Y Gao
1Department of Pediatrics, Division of Nephrology, Louisiana State University Health Sciences Center, 1542 Tulane Avenue, New Orleans, LA 70112, USA. dsilve@lsuhsc.edu
Pediatric Nephrology (Berlin, Germany)
|June 26, 2001
Summary
Connexins (Cx), essential for cell communication, were studied in developing mouse kidneys. Absence of Cx43 did not impact early kidney morphology, challenging previous assumptions about its necessity.
Area of Science:
- Developmental Biology
- Cell Biology
- Nephrology
Background:
- Connexins (Cx) form gap junctions, crucial for intercellular communication during organogenesis.
- Cx43 is vital for transmitting developmental signals and is present in developing mouse kidneys.
- Its role in early renal morphological development was previously considered essential.
Purpose of the Study:
- To investigate the significance of Cx43 in renal developmental morphology.
- To evaluate the kidneys of mouse embryos genetically modified to lack Cx43.
Main Methods:
- Identified wild-type, heterozygote, and knockout progeny using polymerase chain reaction (PCR).
- Assessed Cx43 expression in kidneys via in situ RT-PCR.
- Examined renal histology and morphology in Cx43-deficient embryos.
Main Results:
- Cx43 expression was abundant in wild-type kidneys (glomeruli, vasculature, tubules).
- Cx43 was completely absent in knockout kidneys.
- No significant differences in renal histology, size, dysplasia, or cyst formation were observed between groups.
Conclusions:
- The absence of Cx43 does not affect early renal morphological development.
- Cx43 is not essential for the initial stages of kidney development as previously thought.