28 citations
,
July 2017 in “Expert Review of Anticancer Therapy” This study found that CDK4/6 inhibitors in hormone-positive metastatic breast cancer were linked to increased risks of fatigue, alopecia, and stomatitis compared to placebo.
9 citations
,
February 2001 in “Journal of Dermatological Science” This study found that the expressions of CDK inhibitors p21waf1/cip1 and p27kip1 were higher during the anagen phase compared to telogen, suggesting a role in follicular epithelial cell differentiation.
2 citations
,
November 2025 in “PLoS ONE” This study found that CDK4/6 inhibitors for HR+/HER2- advanced breast cancer are linked to typical adverse events such as fatigue and neutropenia, while also identifying unexpected reactions, highlighting potential safety concerns in their real-world use.
August 1994 in “Molecular Endocrinology” This study found that AtT-20 pituitary cells with higher cAMP-dependent kinase activity had larger calcium currents and significantly increased beta-endorphin release compared to cells with lower kinase activity.
5 citations
,
July 2022 in “Genes” This study found that EGR1 promotes the proliferation of dermal papilla cells, suggesting its close association with hair follicle growth and development.
September 2025 in “Experimental & Molecular Medicine” This study observed that the small molecules KY19382 and KY19334 inhibited cancerous traits in human cutaneous squamous cell carcinoma cells by suppressing the Wnt/β-catenin pathway, indicating their potential as treatments for cancers involving CDK1 overexpression and diseases related to CXXC5 accumulation.
1 citations
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July 2023 in “Cancers” In this multicentric retrospective study, researchers reported that cutaneous adverse events were common among advanced breast cancer patients treated with cyclin-dependent kinase inhibitors (CDK4/6i), generally mild, and manageable with topical treatments, though in some cases, they led to treatment discontinuation.
1 citations
,
January 2022 in “Cell Biology International” This study found that altering cyclin-dependent kinase 4 (CDK4) levels in the bulge region of hair follicles affects the balance of stem cell numbers, potentially influencing hair follicle self-renewal and proliferation.
8 citations
,
December 2015 in “The Journal of Physiology” This review examines regulatory mechanisms of quiescent stem cells in tissue homeostasis, drawing on observations from the intestine and other self-renewing tissues, without presenting new data.
August 2025 in “American Journal of Dermatopathology” In this study, researchers presented cases of cellular neurothekeoma in three male family members with early-onset in infancy, suggesting a potential genetic component and inheritance pattern, which deviates from the typical presentation seen mostly in women between 20–30 years.
8 citations
,
July 2024 in “Journal of Advanced Research” In this study, researchers report that CDK inhibitors like palbociclib and ribociclib, initially developed for cancer therapy, show potential in treating neutrophilic inflammation-related conditions such as ARDS and psoriasis, although their clinical repurposing requires further research on safety and dose adjustments.
19 citations
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April 2015 in “European Journal of Pharmacology” This study found that dihydrotestosterone (DHT) may shorten the hair growth cycle through mechanisms like cell-cycle arrest and β-catenin downregulation in rat hair follicle cells.
April 2010 in “Cancer Research” This study found that altering CDK4 expression in mice affects the population of keratinocyte stem cells, suggesting a correlation with susceptibility to skin papillomas.
August 2013 in “eCommons (Cornell University)” This study found that transcriptional regulation by Runx1 and cyclin-dependent kinase inhibitors plays a crucial role in maintaining quiescence and promoting fate decision flexibility in hair follicle stem cells.
January 2025 in “Nature Communications” This study discovered that calcium dependent protein kinase 1 (CPK1) directly activates cyclic nucleotide-gated channels 5, 6, and 9, promoting root hair growth in Arabidopsis by regulating Ca²⁺ signaling.
June 1996 in “Journal of Dermatological Science” 
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that p21 is much more highly expressed in normal melanocytes compared to melanoma cells, suggesting a potential target for preventing melanoma progression through cell cycle repair processes.
9 citations
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April 2006 in “American Journal of Pathology” This study found that mutations in the Sgk3 gene cause defective hair follicle development and altered hair cycling in mice, with variable phenotypic outcomes depending on different dysfunction patterns of the SGK3 protein.
4 citations
,
May 2019 in “Journal of Clinical Oncology” This study found that cyclin-dependent kinase 4/6 inhibitors used for metastatic breast cancer caused alopecia resembling androgenetic alopecia, negatively impacting patients' quality of life, but topical minoxidil showed potential for improvement.
169 citations
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May 2006 in “Genes & Development” This study found that keratin 17 and TNFα play interdependent roles in regulating hair follicle cycling, with TNFα required for the anagen–catagen transition and its ablation partially rescuing hair cycling defects in K17-null mice.
July 2023 in “New phytologist” This research identified a genetic mutation in Brachypodium distachyon that initially allows root hair initiation but fails to elongate them, while also affecting root growth and nitrate sensitivity; the mutation is linked to a previously uncharacterized cyclin-dependent kinase-like gene.
4 citations
,
March 2014 in “The FASEB Journal” This study observed that deleting ARNT in keratinocytes of mice reduced zigzag hair production and altered hair follicle differentiation, likely by affecting the expression of specific cyclin-dependent kinase inhibitors.
4 citations
,
September 2020 in “Cell division” In this study, XMU-MP-1 unexpectedly reduced cell proliferation and altered cell cycle progression in a model human hair follicle, possibly due to off-target kinase inhibition.
24 citations
,
May 2009 in “The FASEB Journal” This study found that Akt2 and SGK3 are crucial for postnatal hair follicle development in mice, as their combined absence led to severe hair growth defects due to disrupted β-catenin-dependent transcriptional processes.
73 citations
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November 2000 in “Proceedings of the National Academy of Sciences of the United States of America” This study demonstrated that anagen can be induced in Stat3-disrupted mice, suggesting that both Stat3-dependent and independent pathways, possibly involving PKC, mediate hair cycle progression with required PI3K activation.
13 citations
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January 2017 in “Molecules” This study reported that compounds isolated from Alpinia zerumbet significantly promoted hair cell growth and exhibited anticancer activity in cell cultures, suggesting potential as treatments for alopecia and cancer.
November 2025 in “Food Science & Nutrition” In this study, researchers found that topical apigenin promoted hair growth in a testosterone-induced alopecia mouse model, with effects comparable to minoxidil, suggesting a potential treatment approach for androgenetic alopecia through the Wnt signaling pathway.
December 2014 in “Tesis Doctorals en Xarxa (Consorci de Serveis Universitaris de Catalunya)” In this study, researchers found that overexpressing SOX2 in colorectal cancer cell lines can cause DNA damage and cell death, while repressing it reduces tumor growth and cell aggressiveness.
December 2023 in “Journal of ethnopharmacology” This study found that tribuloside, a flavonoid from Tribulus terrestris L., enhances melanin production in human melanocytes, zebrafish, and human skin samples without causing toxicity, potentially through inhibiting PDE to increase cAMP levels and promote the melanin biosynthesis pathway.
March 2022 in “Molecules” This study found that adenosine promotes hair growth by stimulating the Wnt/β-catenin pathway in cultured human dermal papilla cells through activation of the adenosine receptor.