The KRT16 Knockout HAP1 Polyclonal Cells product comprises a CRISPR/Cas9-edited polyclonal knockout cell population targeting the human KRT16 gene. This loss-of-function model is generated using CRISPR/Cas9-mediated gene disruption in the HAP1 cell line, a near-haploid human hematopoietic cell line. The polyclonal format provides a heterogeneous pool of edited cells, enabling robust functional genomics studies without clonal selection bottlenecks. KRT16 encodes keratin 16, an intermediate filament protein critical for epithelial structural integrity, wound healing, and cell migration. The knockout model serves as a versatile tool for investigating keratin 16 biology in a defined genetic background amenable to high-throughput screening.
The host cell line, HAP1, is a human near-haploid cell line derived from the KBM-7 chronic myeloid leukemia isolate. HAP1 cells maintain a stable near-haploid karyotype, making them exceptionally suited for haploid genetic screens, CRISPR-based functional genomics, and loss-of-function analyses. Their hematopoietic origin provides a robust model for studying signaling pathways relevant to cancer and epithelial biology, as they express key downstream effectors of keratin-associated networks. The HAP1 background enables straightforward knockout phenotype interpretation due to its near-haploid genome, reducing genetic redundancy.
Keratin 16, the protein product of KRT16, forms obligate heteropolymers with keratin 6 (KRT6) to assemble intermediate filament networks that maintain cytoarchitecture and mechanical resilience in epithelial cells. KRT16 expression is transcriptionally regulated by upstream factors including EGF, TNF-alpha, IFN-gamma, and TGF-beta, acting through transcription factors such as NF-kB, STAT3, and AP-1. Downstream, the KRT16-KRT6 filament system modulates desmosome stability through interactions with desmoplakin and plakoglobin, and is further regulated by 14-3-3 protein binding. In signaling cascades, KRT16 participates in cytoskeletal remodeling by integrating signals from EGFR, ERK, JNK, and STAT3 pathways, ultimately influencing cell migration, adhesion, and barrier function. Its induction is a hallmark of keratinocyte activation during wound healing and hyperproliferative disorders.
In the HAP1 context, disruption of KRT16 creates a unique platform to dissect keratin-dependent processes in a haploid genetic background. This model is particularly significant for studying cutaneous diseases such as pachyonychia congenita, psoriasis, and squamous cell carcinoma, where KRT16 dysregulation is a known contributor. The near-haploid nature enables high-confidence functional mapping of genetic interactions and drug target validation in epithelial-like signaling contexts. Researchers can leverage the knockout cells to differentiate between cell-autonomous and non-autonomous roles of KRT16 in cancer progression and inflammation, pairing the knockout with HAP1??s ease of genetic manipulation and scalability for arrayed screens.
Typical applications include functional keratin 16 assays, wound healing scratch assays, and Transwell migration/invasion assays. The knockout cells support RNA-seq analysis of keratin-related pathways, flow cytometry for proliferation and apoptosis, and immunofluorescence to assess cytoskeletal organization. Western blotting confirms KRT16 protein loss and monitors compensatory expression changes in KRT6 or KRT17. The polyclonal population is advantageous for haploid genetic screens identifying synthetic lethal interactions associated with skin fragility syndromes and cancer. For further details, contact Ascent Research.
