Sustained epithelial β-catenin activity induces precocious hair development but disrupts hair follicle down-growth and hair shaft formation

K Narhi, E Jarvinen, W Birchmeier, MM Taketo… - 2008 - journals.biologists.com
During embryonic and postnatal development, Wnt/β-catenin signaling is involved in several
stages of hair morphogenesis from placode formation to hair shaft differentiation. Using a …

Fgf20 governs formation of primary and secondary dermal condensations in developing hair follicles

SH Huh, K Närhi, PH Lindfors, O Häärä… - Genes & …, 2013 - genesdev.cshlp.org
In hair follicle development, a placode-derived signal is believed to induce formation of the
dermal condensation, an essential component of ectodermal organs. However, the identity of …

[HTML][HTML] Capturing complex tumour biology in vitro: histological and molecular characterisation of precision cut slices

EJ Davies, M Dong, M Gutekunst, K Närhi… - Scientific reports, 2015 - nature.com
Precision-cut slices of in vivo tumours permit interrogation in vitro of heterogeneous cells from
solid tumours together with their native microenvironment. They offer a low throughput but …

Hair follicle dermal condensation forms via Fgf20 primed cell cycle exit, cell motility, and aggregation

…, OJM Mäkelä, SM Myllymäki, R Das Roy, K Närhi… - Elife, 2018 - elifesciences.org
10.7554/eLife.36468.001 Mesenchymal condensation is a critical step in organogenesis,
yet the underlying molecular and cellular mechanisms remain poorly understood. The hair …

[PDF][PDF] Cell of origin links histotype spectrum to immune microenvironment diversity in non-small-cell lung cancer driven by mutant Kras and loss of Lkb1

…, K Salmenkivi, O Kallioniemi, MI Mäyränpää, K Närhi… - Cell reports, 2017 - cell.com
Lung cancers exhibit pronounced functional heterogeneity, confounding precision medicine.
We studied how the cell of origin contributes to phenotypic heterogeneity following …

[HTML][HTML] Sostdc1 defines the size and number of skin appendage placodes

K Närhi, M Tummers, L Ahtiainen, N Itoh, I Thesleff… - Developmental …, 2012 - Elsevier
Mammary glands and hair follicles develop as ectodermal organs sharing common features
during embryonic morphogenesis. The molecular signals controlling the initiation and …

[HTML][HTML] Protocols and characterization data for 2D, 3D, and slice-based tumor models from the PREDECT project

…, K Gjerde, HJAA Van Zoggel, S Blom, M Dong, K Närhi… - Scientific data, 2017 - nature.com
Two-dimensional (2D) culture of cancer cells in vitro does not recapitulate the three-dimensional
(3D) architecture, heterogeneity and complexity of human tumors. More representative …

Spatial aspects of oncogenic signalling determine the response to combination therapy in slice explants from Kras‐driven lung tumours

K Närhi, AS Nagaraj, E Parri, R Turkki… - The Journal of …, 2018 - Wiley Online Library
A key question in precision medicine is how functional heterogeneity in solid tumours informs
therapeutic sensitivity. We demonstrate that spatial characteristics of oncogenic signalling …

Oncogenic Ras disrupts epithelial integrity by activating the transmembrane serine protease hepsin

TA Tervonen, SM Pant, D Belitškin, JI Englund, K Närhi… - Cancer Research, 2021 - AACR
These findings identify the cell-surface serine protease hepsin as a potential therapeutic
target for its role in oncogenic Ras-mediated deregulation of epithelial cell–cell and cell–matrix …

Establishment and analysis of tumor slice explants as a prerequisite for diagnostic testing

…, J Bao, A Hemmes, M Machado, K Närhi… - JoVE (Journal of …, 2018 - jove.com
Organotypic primary tissue explant cultures, which include precision-cut slices, represent the
three-dimensional (3-D) tissue architecture as well as the multicellular interactions of native …