User profiles for D. Castillo-Azofeifa

David Castillo-Azofeifa

Senior Scientist at Genentech
Verified email at gene.com
Cited by 728

[HTML][HTML] Lgr5+ telocytes are a signaling source at the intestinal villus tip

…, RK Zwick, AE Moor, D Castillo-Azofeifa… - Nature …, 2020 - nature.com
The intestinal epithelium is a structured organ composed of crypts harboring Lgr5+ stem
cells, and villi harboring differentiated cells. Spatial transcriptomics have demonstrated …

Cellular aspect ratio and cell division mechanics underlie the patterning of cell progeny in diverse mammalian epithelia

…, LA Royer, C Schartner, D Castillo-Azofeifa… - Elife, 2018 - elifesciences.org
10.7554/eLife.36739.001 Cell division is essential to expand, shape, and replenish epithelia.
In the adult small intestine, cells from a common progenitor intermix with other lineages, …

A large pool of actively cycling progenitors orchestrates self-renewal and injury repair of an ectodermal appendage

…, T Wald, JK Hu, K Kawaguchi, D Castillo-Azofeifa… - Nature cell …, 2019 - nature.com
The classical model of tissue renewal posits that small numbers of quiescent stem cells (SCs)
give rise to proliferating transit-amplifying cells before terminal differentiation. However, …

Cellular shape reinforces niche to stem cell signaling in the small intestine

…, S Andersson, JI Englund, D Castillo-Azofeifa… - Science …, 2022 - science.org
Niche-derived factors regulate tissue stem cells, but apart from the mechanosensory
pathways, the effect of niche geometry is not well understood. We used organoids and …

Atoh1+ secretory progenitors possess renewal capacity independent of Lgr5+ cells during colonic regeneration

D CastilloAzofeifa, EN Fazio, R Nattiv, HJ Good… - The EMBO …, 2019 - embopress.org
During homeostasis, the colonic epithelium is replenished every 3–5 days by rapidly cycling
Lgr5 + stem cells. However, various insults can lead to depletion of Lgr5 + stem cells, and …

Sonic hedgehog from both nerves and epithelium is a key trophic factor for taste bud maintenance

D Castillo-Azofeifa, JT Losacco, E Salcedo… - …, 2017 - journals.biologists.com
The integrity of taste buds is intimately dependent on an intact gustatory innervation, yet the
molecular nature of this dependency is unknown. Here, we show that differentiation of new …

[PDF][PDF] Epithelial WNT ligands are essential drivers of intestinal stem cell activation

…, XL Zeng, MS Chen, YH Lo, D Castillo-Azofeifa… - Cell reports, 2018 - cell.com
Intestinal stem cells (ISCs) maintain and repair the intestinal epithelium. While regeneration
after ISC-targeted damage is increasingly understood, injury-repair mechanisms that direct …

[PDF][PDF] Tools and concepts for interrogating and defining cellular identity

KL McKinley, D Castillo-Azofeifa, OD Klein - Cell Stem Cell, 2020 - cell.com
Defining the mechanisms that generate specialized cell types and coordinate their functions
is critical for understanding organ development and renewal. New tools and discoveries are …

[HTML][HTML] Epithelial TNF controls cell differentiation and CFTR activity to maintain intestinal mucin homeostasis

EA Reyes, D Castillo-Azofeifa, J Rispal… - The Journal of …, 2023 - Am Soc Clin Investig
The gastrointestinal tract relies on the production, maturation, and transit of mucin to protect
against pathogens and to lubricate the epithelial lining. Although the molecular and cellular …

SOX2 regulation by hedgehog signaling controls adult lingual epithelium homeostasis

D Castillo-Azofeifa, K Seidel, L Gross… - …, 2018 - journals.biologists.com
Adult tongue epithelium is continuously renewed from epithelial progenitor cells, a process
that requires hedgehog (HH) signaling. In mice, pharmacological inhibition of the HH …