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Updated: Aug 11, 2025

Evaluating the Effectiveness of Cancer Drug Sensitization In Vitro and In Vivo
Published on: February 6, 2015
Vitamin D metabolism in cancer: potential feasibility of vitamin D metabolism blocking therapy
Sakura Kamiya1, Yuna Nakamori1,2, Akira Takasawa1
1Department of Pathology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-Ku, Sapporo, 060-0061, Japan.
Abstract:
In this review, we discuss the possibility of the vitamin D metabolizing enzyme CYP24A1 being a therapeutic target for various tumors including breast, colorectal and prostate tumors. Given the pleiotropic cellular activity of vitamin D, its deficiency impairs its physiological function in target cells and results in various pathologies including cancer. In addition, accumulated data have shown that elevated expression of CYP24A1 promotes carcinogenesis in various cancer subtypes by decreasing the bioavailability of vitamin D metabolites. Thus, we propose the potential feasibility of vitamin D metabolism-blocking therapy in various types of human malignancies that express constitutive CYP24A1.
Insights
Targeting the vitamin D metabolizing enzyme CYP24A1 could offer a new therapy for breast, colorectal, and prostate cancers. Blocking vitamin D metabolism may combat cancer by restoring vitamin D
Area of Science:
- Biochemistry
- Oncology
- Endocrinology
Background:
- Vitamin D plays a crucial role in cellular function; deficiency is linked to various pathologies, including cancer.
- Elevated expression of the enzyme CYP24A1 reduces vitamin D metabolite bioavailability.
- CYP24A1 is implicated in promoting carcinogenesis across multiple cancer subtypes.
Purpose of the Study:
- To review the potential of targeting the vitamin D metabolizing enzyme CYP24A1 as a therapeutic strategy.
- To explore the role of CYP24A1 in the development of breast, colorectal, and prostate tumors.
- To propose vitamin D metabolism-blocking therapy for malignancies expressing constitutive CYP24A1.
Main Methods:
- Literature review of studies on vitamin D metabolism and cancer.
- Analysis of data linking CYP24A1 expression to carcinogenesis.
- Evaluation of the feasibility of targeting CYP24A1 in human malignancies.
Main Results:
- Vitamin D deficiency impairs physiological functions, contributing to diseases like cancer.
- Increased CYP24A1 expression is associated with reduced vitamin D bioavailability and enhanced cancer development.
- CYP24A1 is constitutively expressed in various human tumors.
Conclusions:
- The enzyme CYP24A1 is a potential therapeutic target for various cancers.
- Therapies aimed at blocking vitamin D metabolism show promise for treating specific human malignancies.
- Targeting CYP24A1 could restore vitamin D's anti-cancer effects.
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