The ADAMTS14 Knockout HAP1 Polyclonal Cells product comprises a polyclonal population of HAP1 cells harboring a CRISPR/Cas9-mediated disruption of the ADAMTS14 gene, resulting in loss of functional ADAMTS14 expression. This engineered cell model provides a robust tool for investigating the roles of the secreted metalloprotease ADAMTS14 in collagen processing and extracellular matrix (ECM) homeostasis. As a polyclonal knockout pool, it represents a heterogeneous collection of edited alleles, avoiding clonal artifacts and enabling population-based functional studies.
The host HAP1 cell line is a near-haploid human cell line derived from the KBM-7 chronic myeloid leukemia background, rendered near-haploid through mutagenesis. These cells exhibit an adherent, fibroblast-like morphology and are deficient in functional p53, which facilitates genetic manipulation and survival of cells with extensive genomic alterations. The near-haploid genomic configuration, with only one copy of most chromosomes, simplifies the generation of homozygous disruptions and is especially advantageous for haploid genetic screens and gene-trap mutagenesis approaches, making HAP1 a preferred platform for knockout studies.
ADAMTS14 functions as a secreted procollagen N-proteinase, specifically cleaving the amino-terminal propeptides of fibrillar procollagens type I and II, a critical step for mature collagen fibril formation and subsequent ECM assembly. The enzyme is tightly regulated at the transcriptional level by factors such as SOX9 and the TGF???/SMAD2/3 signaling axis, as well as by inflammatory mediators including IL?1?? and TNF??? via NF???B. ADAMTS14 interacts with fibrillar procollagens (COL1A1, COL2A1) and is modulated by TIMP?3 and various ECM proteoglycans. Its proteolytic activity releases mature collagen molecules that polymerize into fibrils, which in turn engage integrin receptors to promote cell adhesion, migration, and mechanotransduction.
In the HAP1 background, ADAMTS14 knockout leads to impaired removal of procollagen N?propeptides, resulting in the accumulation of improperly processed procollagen and defective collagen fibrillogenesis. This disruption compromises ECM structural integrity and alters integrin-mediated signaling cascades, potentially affecting cell proliferation, survival, and motility ?C phenotypes particularly relevant in cancer biology given the p53?deficient nature of HAP1 cells. The near?haploid genetic landscape further allows for facile combinatorial editing, enabling researchers to pair ADAMTS14 knockout with other ECM?related gene disruptions to dissect complex signaling networks.
This knockout model is ideally suited for a broad spectrum of investigations, including extracellular matrix remodeling studies, collagen processing defect analyses, and mechanistic research into fibrotic diseases and osteoarthritis. Typical experimental approaches include Western blotting for procollagen versus mature collagen, immunofluorescence microscopy to visualize collagen fibril organization, cell adhesion and migration/invasion assays, RT?qPCR for pathway component expression, and procollagen N?proteinase activity assays. It also serves as a valuable platform for screening metalloprotease inhibitors or modulators of TGF??? signaling in a defined genetic background. For further technical information, please contact Ascent Research.
