|A personal message from Dr Mark Hill (May 2020)
| I have decided to take early retirement in September 2020. During the many years online I have received wonderful feedback from many readers, researchers and students interested in human embryology. I especially thank my research collaborators and contributors to the site. The good news is Embryology will remain online and I will continue my association with UNSW Australia. I look forward to updating and including the many exciting new discoveries in Embryology!
Notch structure cartoon
The notch proteins were first identified in drosophila development and have since been identified as regulators of cell fate decisions during development. These are a family of cell surface transmembrane receptors that pass once through the plasma membrane.
This signalling pathway is involved with many different developmental patterning pathways and in the adult is a key regulator in the vascular system.
- Notch Links: Notch structure cartoon | Notch signaling pathway cartoon | Notch and signaling pathway cartoon | Developmental Signals - Notch | Molecular Factors
Some Recent Findings
Mouse somitogenesis genes
- Transitions in cell potency during early mouse development are driven by Notch "The Notch signalling pathway plays fundamental roles in diverse developmental processes in metazoans, where it is important in driving cell fate and directing differentiation of various cell types. However, we still have limited knowledge about the role of Notch in early preimplantation stages of mammalian development, or how it interacts with other signalling pathways active at these stages such as Hippo. By using genetic and pharmacological tools in vivo, together with image analysis of single embryos and pluripotent cell culture, we have found that Notch is active from the 4-cell stage. Transcriptomic analysis in single morula identified novel Notch targets, such as early naïve pluripotency markers or transcriptional repressors such as TLE4. Our results reveal a previously undescribed role for Notch in driving transitions during the gradual loss of potency that takes place in the early mouse embryo prior to the first lineage decisions."
- Coordinated control of Notch/Delta signalling and cell cycle progression drives lateral inhibition-mediated tissue patterning "Coordinating cell differentiation with cell growth and division is crucial for the successful development, homeostasis and regeneration of multicellular tissues. Here, we use bristle patterning in the fly notum as a model system to explore the regulatory and functional coupling of cell cycle progression and cell fate decision-making. The pattern of bristles and intervening epithelial cells (ECs) becomes established through Notch-mediated lateral inhibition during G2 phase of the cell cycle, as neighbouring cells physically interact with each other via lateral contacts and/or basal protrusions. Since Notch signalling controls cell division timing downstream of Cdc25, ECs in lateral contact with a Delta-expressing cell experience higher levels of Notch signalling and divide first, followed by more distant neighbours, and lastly Delta-expressing cells. Conversely, mitotic entry and cell division makes ECs refractory to lateral inhibition signalling, fixing their fate. Using a combination of experiments and computational modelling, we show that this reciprocal relationship between Notch signalling and cell cycle progression acts like a developmental clock, providing a delimited window of time during which cells decide their fate, ensuring efficient and orderly bristle patterning."
- Notch3-Jagged signaling controls the pool of undifferentiated airway progenitors "Basal cells are multipotent airway progenitors that generate distinct epithelial cell phenotypes crucial for homeostasis and repair of the conducting airways. Little is known about how these progenitor cells expand and transition to differentiation to form the pseudostratified airway epithelium in the developing and adult lung. Here, we show by genetic and pharmacological approaches that endogenous activation of Notch3 signaling selectively controls the pool of undifferentiated progenitors of upper airways available for differentiation. This mechanism depends on the availability of Jag1 and Jag2, and is key to generating a population of parabasal cells that later activates Notch1 and Notch2 for secretory-multiciliated cell fate selection." Respiratory System Development
|More recent papers
This table allows an automated computer search of the external PubMed database using the listed "Search term" text link.
- This search now requires a manual link as the original PubMed extension has been disabled.
- The displayed list of references do not reflect any editorial selection of material based on content or relevance.
- References also appear on this list based upon the date of the actual page viewing.
References listed on the rest of the content page and the associated discussion page (listed under the publication year sub-headings) do include some editorial selection based upon both relevance and availability.
More? References | Discussion Page | Journal Searches | 2019 References | 2020 References
Search term: Notch
|These papers originally appeared in the Some Recent Findings table, but as that list grew in length have now been shuffled down to this collapsible table.
See also the Discussion Page for other references listed by year and References on this current page.
- Notch regulation of myogenic versus endothelial fates of cells that migrate from the somite to the limb "Multipotent Pax3-positive (Pax3(+)) cells in the somites give rise to skeletal muscle and to cells of the vasculature. We had previously proposed that this cell-fate choice depends on the equilibrium between Pax3 and Foxc2 expression. In this study, we report that the Notch pathway promotes vascular versus skeletal muscle cell fates. ...We now demonstrate that in addition to the inhibitory role of Notch signaling on skeletal muscle cell differentiation, the Notch pathway affects the Pax3:Foxc2 balance and promotes the endothelial versus myogenic cell fate, before migration to the limb, in multipotent Pax3(+) cells in the somite of the mouse embryo." Limb Development | Muscle Development
- The precise timeline of transcriptional regulation reveals causation in mouse somitogenesis network "In vertebrate development, the segmental pattern of the body axis is established as somites, masses of mesoderm distributed along the two sides of the neural tube, are formed sequentially in the anterior-posterior axis. This mechanism depends on waves of gene expression associated with the Notch, Fgf and Wnt pathways."
- Role of p63 and the Notch pathway in cochlea development and sensorineural deafness "The ectodermal dysplasias are a group of inherited autosomal dominant syndromes associated with heterozygous mutations in the Tumor Protein p63 (TRP63) gene. Here we show that, in addition to their epidermal pathology, a proportion of these patients have distinct levels of deafness. ...these data demonstrate that TAp63, acting via the Notch pathway, is crucial for the development of the organ of Corti, providing a molecular explanation for the sensorineural deafness in ectodermal dysplasia patients with TRP63 mutations." Sensory - Hearing and Balance Development
- Notch signaling regulates late-stage epidermal differentiation and maintains postnatal hair cycle homeostasis "Notch signaling involves ligand-receptor interactions through direct cell-cell contact. Multiple Notch receptors and ligands are expressed in the epidermis and hair follicles during embryonic development and the adult stage. Although Notch signaling plays an important role in regulating differentiation of the epidermis and hair follicles, it remains unclear how Notch signaling participates in late-stage epidermal differentiation and postnatal hair cycle homeostasis. ...our data reveal a role for Notch signaling in regulating late-stage epidermal differentiation. Notch signaling is required for postnatal hair cycle homeostasis by maintaining proper proliferation and differentiation of hair follicle stem cells."
- Notch pathway regulation of chondrocyte differentiation and proliferation during appendicular and axial skeleton development "The role of Notch signaling in cartilage differentiation and maturation in vivo was examined. Conditional Notch pathway gain and loss of function was achieved using a Cre/loxP approach to manipulate Notch signaling in cartilage precursors and chondrocytes of the developing mouse embryo. Conditional overexpression of activated Notch intracellular domain (NICD) in the chondrocyte lineage results in skeletal malformations with decreased cartilage precursor proliferation and inhibited hypertrophic chondrocyte differentiation. Likewise, expression of NICD in cartilage precursors inhibits sclerotome differentiation, resulting in severe axial skeleton abnormalities. Furthermore, conditional loss of Notch signaling via RBP-J gene deletion in the chondrocyte lineage results in increased chondrocyte proliferation and skeletal malformations consistent with the observed increase in hypertrophic chondrocytes. In addition, the Notch pathway inhibits expression of Sox9 and its target genes required for normal chondrogenic cell proliferation and differentiation. Together, our results demonstrate that appropriate Notch pathway signaling is essential for proper chondrocyte progenitor proliferation and for the normal progression of hypertrophic chondrocyte differentiation into bone in the developing appendicular and axial skeletal elements." Cartilage Development
- Notch signalling in the paraxial mesoderm is most sensitive to reduced Pofut1 levels during early mouse development "Notch-dependent processes apparently differ with respect to their requirement for levels of POFUT1. Normal Lfng expression and anterior-posterior somite patterning is highly sensitive to reduced POFUT1 levels in early mammalian embryos, whereas other early Notch-dependent processes such as establishment of left-right asymmetry or neurogenesis are not. Thus, it appears that in the presomitic mesoderm (PSM) Notch signalling is particularly sensitive to POFUT1 levels. Reduced POFUT1 levels might affect Notch trafficking or overall O-fucosylation. Alternatively, reduced O-fucosylation might preferentially affect sites that are substrates for LFNG and thus important for somite formation and patterning."
|Notch signaling pathway
- Secretory pathway - modifications during the secretion of Notch to the membrane in the ER (purple) and the Golgi (orange). Notch is translated inside ER, where it is glycosylated by an O-fucosyltransferase O-Fut1 (light purple) and O-glucosyltransferase Rumi (yellow). Note the black circle on the Notch molecule in the ER; because Notch is not cleaved, the extracellular and intracellular domains are physically linked. Notch is then translocated into Golgi, where it is cleaved by Furin protease (scissors) at the S1 site and further modified by the N-acetylglucosaminyltransferase, Fringe. Note the red circle on the Notch molecule in the Golgi after S1 cleavage; the extracellular and intracellular domains are not physically linked
- Ligand-mediated activation - Notch (gray) interacts with the DSL ligands, Delta (blue) and Serrate (green), resulting in a series of proteolytic cleavage events induced by ligand binding. The S2 cleavage is mediated by ADAM protease (purple), whereas the S3/4 cleavage event is mediated by γ-secretase (g-secretase, in orange). Several studies also suggest that γ-secretase–mediated cleavage can occur inside endocytic compartment (shown in the light blue circle).
- Endocytic regulation of Notch receptor - full-length Notch can undergo endocytosis, leading to translocation of Notch into EEs, MVB, and lysosomes. From genetic data, several proteins have been identified to modulate this process, including Hrs and Bib, possibly during the EE-to-MVB transition of Notch, Lgd, and ESCRT complex, or during the MVB-to-lysosomes transition. These proteins further modulate Notch activity as described in the text. Dotted red arrow shows in mutants affect of trafficking from the MVB to the lysosome, or if Notch is not trafficked to the lumen of the lysosome, Notch can undergo γ-secretase cleavage, resulting in a Notch GOF phenotypes.
(text from original figure legend)
Notch receptors belong to the Ankyrin repeat domain containing (ANKRD) gene family (242 members).
- Links: HGNC - Ankyrin repeat domain containing (ANKRD) gene family
- Notch3 activation retains mammary luminal cell in a nonproliferative state 
Developmental patterning signal.
|Mouse Blastocyst (32 cell stage) Fate
|Angiomotin (Amot) phosphorylation at adherens junctions
||Amot sequestered by cell polarization from basolateral adherens junctions
|Cdx2 not expressed
|ICM - inner cell mass fate
||TE - trophectoderm fate
Hippo(TEAD4) and Notch(Cdx2) together appear regulate early blastocyst fate development.
Spinal Cord Development
|Model of the embryonic rostro-caudal gradient of neurogenesis along the chicken spinal cord from the stem zone to the neurogenic neural tube summarising how DELTA-NOTCH signalling may be involved in these processes.
- Caudal to rostral decreasing FGF gradient, leads to Delta-1 expression decrease in cells that leave the stem zone (light blue) and move into the PNTZ where they intermingle with cells that do not express Delta-1.
- Generates differences in DELTA/NOTCH signalling between adjacent cells that may initiate lateral inhibition.
- Upregulation of Delta-1 in single NP cells which signal (blue arrows) and activate NOTCH signalling in adjacent cells, which as a consequence express Hes5 and are maintained in a proliferating state.
- Delta-1 expressing NP cell divides into two cells that express Tis21.
- Double Delta-1/Tis21 labelled NP down regulate the expression of Delta-1 as they reach the NZ and begin to divide in a neurogenic manner.
- One of the daughter cells upregulates Delta-1 expression and differentiates as a neuron while the other one, which receives NOTCH signalling (blue arrows), remains as neurogenic NP. Hensen node (HN), neural tube (NT), neurogenic zone (NZ), proliferation to neurogenesis transition zone (PNTZ), presomitic territory (PS), somite (S).
Notch1 deficiency in postnatal neural progenitor cells in the dentate gyrus leads to emotional and cognitive impairment
- "The latest evidence shows that Notch1 also plays a critical role in synaptic plasticity in mature hippocampal neurons. So far, deeper insights into the function of Notch1 signaling during the different steps of adult neurogenesis are still lacking, and the mechanisms by which Notch1 dysfunction is associated with brain disorders are also poorly understood. In the current study, we found that Notch1 was highly expressed in the adult-born immature neurons in the hippocampal dentate gyrus. Using a genetic approach to selectively ablate Notch1 signaling in late immature precursors in the postnatal hippocampus by cross-breeding doublecortin (DCX)+ neuron-specific proopiomelanocortin (POMC)-α Cre mice with floxed Notch1 mice, we demonstrated a previously unreported pivotal role of Notch1 signaling in survival and function of adult newborn neurons in the dentate gyrus. Moreover, behavioral and functional studies demonstrated that POMC-Notch1-/- mutant mice showed anxiety and depressive-like behavior with impaired synaptic transmission properties in the dentate gyrus. Finally, our mechanistic study showed significantly compromised phosphorylation of cAMP response element-binding protein (CREB) in Notch1 mutants, suggesting that the dysfunction of Notch1 mutants is associated with the disrupted pCREB signaling in postnatally generated immature neurons in the dentate gyrus."
- Links: Hippocampus Development
Endoderm differentiates to form the respiratory airway epithelium and glands. This epithelium is continuously replaced through life from a basal cell pool of undifferentiated airway progenitors. A recent study has shown that the progenitor pool is regulated by the Notch3-Jagged signaling pathway. The mechanism appears dependent upon the availability of Jag1 and Jag2 (generating parabasal cells) that later activates Notch1 and Notch2 leading to a secretory-multiciliated cell fate.
- L;inks: Respiratory System Development
Blood Vessel Development
NOTCH Signaling in the EndotheliumPubmedParser error: Invalid PMID, please check. (PMID: 29547401PMID29547401)
(a) A vascular sprout is characterized by a leading ‘tip’ cell followed by ‘stalk’ cells.
(b) Regulation of new sprouting during vascular expansion depends on integration of BMP signaling, NOTCH signaling and VEGF signaling.
(c) In adult vessels, NOTCH is responsible for maintaining endothelial quiescence and junctional integrity.
Notch signalling in muscle regeneration
Hypothalamus Development Gene Interaction Model
- Links: Hypothalamus Development
Mutations in the human homolog of Jagged-1 (JAG1) located on chromosome 20p12 cause Alagille Syndrome. Abnormalities are seen in gastrointestinal (liver cholestasis), cardiac (heart), renal (kidney), skeletal, ocular, and facial systems.
- Links: Alagille Syndrome
- ↑ 1.0 1.1 Tien AC, Rajan A & Bellen HJ. (2009). A Notch updated. J. Cell Biol. , 184, 621-9. PMID: 19255248 DOI.
- ↑ 2.0 2.1 Fongang B & Kudlicki A. (2013). The precise timeline of transcriptional regulation reveals causation in mouse somitogenesis network. BMC Dev. Biol. , 13, 42. PMID: 24304493 DOI.
- ↑ Menchero S, Rollan I, Lopez-Izquierdo A, Andreu MJ, Sainz de Aja J, Kang M, Adan J, Benedito R, Rayon T, Hadjantonakis AK & Manzanares M. (2019). Transitions in cell potency during early mouse development are driven by Notch. Elife , 8, . PMID: 30958266 DOI.
- ↑ Hunter GL, Hadjivasiliou Z, Bonin H, He L, Perrimon N, Charras G & Baum B. (2016). Coordinated control of Notch/Delta signalling and cell cycle progression drives lateral inhibition-mediated tissue patterning. Development , 143, 2305-10. PMID: 27226324 DOI.
- ↑ 5.0 5.1 Mori M, Mahoney JE, Stupnikov MR, Paez-Cortez JR, Szymaniak AD, Varelas X, Herrick DB, Schwob J, Zhang H & Cardoso WV. (2015). Notch3-Jagged signaling controls the pool of undifferentiated airway progenitors. Development , 142, 258-67. PMID: 25564622 DOI.
- ↑ Mayeuf-Louchart A, Lagha M, Danckaert A, Rocancourt D, Relaix F, Vincent SD & Buckingham M. (2014). Notch regulation of myogenic versus endothelial fates of cells that migrate from the somite to the limb. Proc. Natl. Acad. Sci. U.S.A. , 111, 8844-9. PMID: 24927569 DOI.
- ↑ Schrauwen I & Van Camp G. (2010). The etiology of otosclerosis: a combination of genes and environment. Laryngoscope , 120, 1195-202. PMID: 20513039 DOI.
- ↑ 8.0 8.1 Mead TJ & Yutzey KE. (2009). Notch pathway regulation of chondrocyte differentiation and proliferation during appendicular and axial skeleton development. Proc. Natl. Acad. Sci. U.S.A. , 106, 14420-5. PMID: 19590010 DOI.
- ↑ Schuster-Gossler K, Harris B, Johnson KR, Serth J & Gossler A. (2009). Notch signalling in the paraxial mesoderm is most sensitive to reduced Pofut1 levels during early mouse development. BMC Dev. Biol. , 9, 6. PMID: 19161597 DOI.
- ↑ Lafkas D, Rodilla V, Huyghe M, Mourao L, Kiaris H & Fre S. (2013). Notch3 marks clonogenic mammary luminal progenitor cells in vivo. J. Cell Biol. , 203, 47-56. PMID: 24100291 DOI.
- ↑ Sasaki H. (2015). Position- and polarity-dependent Hippo signaling regulates cell fates in preimplantation mouse embryos. Semin. Cell Dev. Biol. , 47-48, 80-7. PMID: 25986053 DOI.
- ↑ Rayon T, Menchero S, Nieto A, Xenopoulos P, Crespo M, Cockburn K, Cañon S, Sasaki H, Hadjantonakis AK, de la Pompa JL, Rossant J & Manzanares M. (2014). Notch and hippo converge on Cdx2 to specify the trophectoderm lineage in the mouse blastocyst. Dev. Cell , 30, 410-22. PMID: 25127056 DOI.
- ↑ Hämmerle B & Tejedor FJ. (2007). A novel function of DELTA-NOTCH signalling mediates the transition from proliferation to neurogenesis in neural progenitor cells. PLoS ONE , 2, e1169. PMID: 18000541 DOI.
- ↑ Feng S, Shi T, Qiu J, Yang H, Wu Y, Zhou W, Wang W & Wu H. (2017). Notch1 deficiency in postnatal neural progenitor cells in the dentate gyrus leads to emotional and cognitive impairment. FASEB J. , 31, 4347-4358. PMID: 28611114 DOI.
- ↑ Mourikis P & Tajbakhsh S. (2014). Distinct contextual roles for Notch signalling in skeletal muscle stem cells. BMC Dev. Biol. , 14, 2. PMID: 24472470 DOI.
- ↑ Ratié L, Ware M, Barloy-Hubler F, Romé H, Gicquel I, Dubourg C, David V & Dupé V. (2013). Novel genes upregulated when NOTCH signalling is disrupted during hypothalamic development. Neural Dev , 8, 25. PMID: 24360028 DOI.
Reichrath J & Reichrath S. (2020). A Snapshot of the Molecular Biology of Notch Signaling: Challenges and Promises. Adv. Exp. Med. Biol. , 1227, 1-7. PMID: 32072495 DOI.
Amelio I, Grespi F, Annicchiarico-Petruzzelli M & Melino G. (2012). p63 the guardian of human reproduction. Cell Cycle , 11, 4545-51. PMID: 23165243 DOI.
Roemer K. (2012). Notch and the p53 clan of transcription factors. Adv. Exp. Med. Biol. , 727, 223-40. PMID: 22399351 DOI.
Andersen P, Uosaki H, Shenje LT & Kwon C. (2012). Non-canonical Notch signaling: emerging role and mechanism. Trends Cell Biol. , 22, 257-65. PMID: 22397947 DOI.
Andersson ER, Sandberg R & Lendahl U. (2011). Notch signaling: simplicity in design, versatility in function. Development , 138, 3593-612. PMID: 21828089 DOI.
Search Bookshelf Notch
Search Pubmed Now: Notch Signaling
External Links Notice - The dynamic nature of the internet may mean that some of these listed links may no longer function. If the link no longer works search the web with the link text or name. Links to any external commercial sites are provided for information purposes only and should never be considered an endorsement. UNSW Embryology is provided as an educational resource with no clinical information or commercial affiliation.
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2020, May 31) Embryology Developmental Signals - Notch. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Developmental_Signals_-_Notch
- What Links Here?
- © Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G