Papillary Fibroblasts
Papillary Fibroblasts - Related Videos
06:22
Contractility Measurements on Isolated Papillary Muscles for the Investigation of Cardiac Inotropy in Mice
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Cited by 14 •
2015
Murine left ventricular papillary muscle can be used to investigate cardiac contractility in vitro. This article describes in detail the isolation and experimental protocols to study cardiac contractile characteristics.
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Isolation of Papillary and Reticular Fibroblasts from Human Skin by Fluorescence-activated Cell Sorting
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Cited by 13 •
2019
This manuscript describes a FACS-based protocol for isolation of papillary and reticular fibroblasts from human skin. It circumvents in vitro culture which was inevitable with the commonly used isolation protocol via explant cultures. The emanating fibroblast subsets are functionally distinct and display differential gene expression and localization within the dermis.
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Papillary Dermis
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2025
Dermis The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts. Papillary Layer The papillary layer is made of loose, areolar connective tissue, which means the collagen and...
10:10
Robotic Duodenum-preserving Total Pancreatic Head Resection for Intraductal Papillary Mucinous Neoplasms
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2026
This protocol presents robotic duodenum-preserving total pancreatic head resection (R-DPPHRt) for intraductal papillary mucinous neoplasms (IPMNs). A video demonstrates the technique in a patient with main duct-IPMN, highlighting its feasibility as a minimally invasive, organ-preserving alternative to pancreaticoduodenectomy.
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Experimental Generation of Carcinoma-Associated Fibroblasts (CAFs) from Human Mammary Fibroblasts
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Cited by 25 •
2011
Carcinoma-associated fibroblasts (CAFs) rich in myofibroblasts present within the tumour stroma, play a major role in driving tumour progression. We developed a coimplantation tumour xengraft model for experimentally generating CAFs from human mammary fibroblasts. The protocol describes how to establish CAF myofibroblasts that acquire an ability to promote tumourigenesis.
FAQs
Gene expression and signaling pathways determine which cellular programs papillary fibroblasts activate. These programs regulate collagen production, extracellular-matrix remodeling, cell growth, and responses to injury. Consequently, genetics studies can connect an inherited or acquired change with altered fibroblast behavior, rather than treating skin structure as a purely anatomical outcome.
Collagen production and matrix remodeling represent related but distinct outputs. Production contributes new extracellular-matrix material, whereas remodeling changes the matrix environment in which cells reside. Examining both helps researchers determine whether a genetic or signaling difference primarily affects matrix construction, matrix reorganization, or both, which aids interpretation of changes in skin structure, repair, or aging.
Location-specific genetic programs help explain why papillary fibroblasts cannot automatically be treated as equivalent to fibroblasts from deeper dermal layers. Comparing the two populations can reveal differences in cellular functions that arise from anatomical position. In genetics research, this design helps distinguish layer-associated behavior from changes that may occur broadly across dermal fibroblasts.
Responses to injury provide a functional way to study fibroblast regulation. Researchers can examine how papillary fibroblast behavior changes during a repair-related response and relate those changes to gene expression or signaling pathways. This approach links molecular regulation with wound-healing outcomes, helping clarify how altered cellular programs influence repair beyond collagen production alone.
A genetics-focused investigation can compare papillary fibroblasts under different genetic or signaling states and assess consequences for collagen production, matrix remodeling, cell growth, and injury responses. Including fibroblasts from deeper dermal layers adds a location-based comparison. Together, these measurements can indicate whether an observed cellular outcome reflects altered regulation, layer-specific programming, or both.
These cells are especially informative for studying how inherited or acquired changes influence skin structure, wound healing, aging, and disease. Their value comes from connecting genetic regulation to several tissue-level outcomes through the same cellular model. The approach supports questions about normal skin maintenance as well as pathological or age-associated changes in superficial dermal tissue.
Signaling pathways coordinate regulatory information with cellular behavior. In papillary fibroblasts, that coordination can affect matrix production, remodeling, growth, and injury responses in different combinations. Studying pathway-linked changes alongside gene expression allows researchers to ask not only which functions change, but also whether several altered functions share a common regulatory basis.