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stratum corneum of esophageal epithelium #3424

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14 changes: 10 additions & 4 deletions src/ontology/uberon-edit.obo
Original file line number Diff line number Diff line change
@@ -45,9 +45,6 @@ synonymtypedef: PENDING_REVIEW "expert consultation and attribution required"
synonymtypedef: SENSU "taxonomic disambiguation"
synonymtypedef: SYSTEMATIC "a systematic synonym used as the base name for design patterns"
default-namespace: uberon
idspace: EFO http://www.ebi.ac.uk/efo/EFO_
idspace: NIF_Subcellular http://www.neurolex.org/wiki/
idspace: NIFEXT http://uri.neuinfo.org/nif/nifstd/nifext_
treat-xrefs-as-equivalent: AEO
treat-xrefs-as-equivalent: BILA
treat-xrefs-as-equivalent: BSPO
@@ -72993,8 +72990,8 @@ id: UBERON:0003532
name: hindlimb skin
def: "A zone of skin that is part of a hindlimb [Automatically generated definition]." [OBOL:automatic]
synonym: "hind limb skin" EXACT [OBOL:automatic]
synonym: "lower limb skin" EXACT [https://orcid.org/0000-0002-0819-0473]
synonym: "lower limb skin" EXACT [FMA:23102]
synonym: "lower limb skin" EXACT [https://orcid.org/0000-0002-0819-0473]
synonym: "skin of hind limb" EXACT [OBOL:automatic]
synonym: "skin of hindlimb" EXACT [OBOL:automatic]
synonym: "skin of lower extremity" EXACT [OBOL:automatic]
@@ -224734,6 +224731,15 @@ relationship: dc-contributor https://orcid.org/0009-0005-7919-4905
relationship: part_of UBERON:0001043 ! esophagus
property_value: dcterms-date "2024-11-14T15:00:21Z" xsd:dateTime

[Term]
id: UBERON:8700003
name: stratum corneum of esophageal epithelium
def: "The outermost layer of the stratified squamous epithelium lining the esophagus, composed of several layers of flattened, anucleated keratinocytes called corneocytes. It forms the primary protective barrier against mechanical, chemical, and microbial insults, while regulating permeability and contributing to tissue integrity. This layer is characterized by corneocytes embedded in a lipid-rich extracellular matrix, providing mechanical reinforcement and maintaining essential barrier functions of the esophageal lining." [doi:10.1038/gimo15, PMID:21126700, PMID:26019440]
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I could not find anything in the provided references describing the stratum corneum of esophageal epithelium as containing anucleated keratinocytes (corneocytes). I believe corneocytes are more commonly associated with the keratinized cells of the skin. The esophagus typically has a non-keratinized or partially keratinized stratified squamous epithelium, where the outermost cells retain their nuclei and do not form corneocytes as seen in the skin

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I would also suggest removing the details about anucleated if there is no supporting evidence specific to the esophagus as I found that the state of the nucleus is not consistent across species. For example, cells in the human esophageal stratum corneum (and other mammals) seem to retain their nuclei, whereas in mice they do not (https://doi.org/10.1152/ajpgi.00088.2015, https://en.wikipedia.org/wiki/Stratified_squamous_epithelium).

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I would suggest editing the definition a little bit ie.

The outermost layer of the stratified squamous epithelium lining the esophagus, composed of several layers of flattened epithelial cells that are partially or non-keratinized. This layer provides a protective barrier against mechanical and chemical insults, contributing to tissue integrity and regulating permeability through its apical cell membranes and intercellular junctional complexes.

is_a: UBERON:0010304 ! non-keratinized stratified squamous epithelium
relationship: dc-contributor https://orcid.org/0009-0005-7919-4905
relationship: part_of UBERON:0001043 ! esophagus
property_value: dcterms-date "2024-11-14T15:10:48Z" xsd:dateTime

[Term]
id: UBERON:8850000
name: lumen of pulmonary alveolus