PMID- 34208589 OWN - NLM STAT- MEDLINE DCOM- 20210719 LR - 20210719 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 12 DP - 2021 Jun 16 TI - Is Vitamin D Deficiency Related to Increased Cancer Risk in Patients with Type 2 Diabetes Mellitus? LID - 10.3390/ijms22126444 [doi] LID - 6444 AB - There is mounting evidence that type 2 diabetes mellitus (T2DM) is related with increased risk for the development of cancer. Apart from shared common risk factors typical for both diseases, diabetes driven factors including hyperinsulinemia, insulin resistance, hyperglycemia and low grade chronic inflammation are of great importance. Recently, vitamin D deficiency was reported to be associated with the pathogenesis of numerous diseases, including T2DM and cancer. However, little is known whether vitamin D deficiency may be responsible for elevated cancer risk development in T2DM patients. Therefore, the aim of the current review is to identify the molecular mechanisms by which vitamin D deficiency may contribute to cancer development in T2DM patients. Vitamin D via alleviation of insulin resistance, hyperglycemia, oxidative stress and inflammation reduces diabetes driven cancer risk factors. Moreover, vitamin D strengthens the DNA repair process, and regulates apoptosis and autophagy of cancer cells as well as signaling pathways involved in tumorigenesis i.e., tumor growth factor beta (TGFbeta), insulin-like growth factor (IGF) and Wnt-beta-Cathenin. It should also be underlined that many types of cancer cells present alterations in vitamin D metabolism and action as a result of Vitamin D Receptor (VDR) and CYP27B1 expression dysregulation. Although, numerous studies revealed that adequate vitamin D concentration prevents or delays T2DM and cancer development, little is known how the vitamin affects cancer risk among T2DM patients. There is a pressing need for randomized clinical trials to clarify whether vitamin D deficiency may be a factor responsible for increased risk of cancer in T2DM patients, and whether the use of the vitamin by patients with diabetes and cancer may improve cancer prognosis and metabolic control of diabetes. FAU - Gabryanczyk, Anna AU - Gabryanczyk A AD - Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland. FAU - Klimczak, Sylwia AU - Klimczak S AD - Student Scientific Society of Civilization Diseases, Medical University of Lodz, 251 Pomorska, 92-213 Lodz, Poland. FAU - Szymczak-Pajor, Izabela AU - Szymczak-Pajor I AUID- ORCID: 0000-0002-6545-579X AD - Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland. FAU - Sliwinska, Agnieszka AU - Sliwinska A AUID- ORCID: 0000-0002-6864-0704 AD - Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland. LA - eng PT - Journal Article PT - Review DEP - 20210616 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Biomarkers) RN - 0 (Receptors, Calcitriol) RN - 0 (VDR protein, human) RN - 1406-16-2 (Vitamin D) SB - IM MH - Animals MH - Apoptosis/drug effects MH - Autophagy/drug effects MH - Biomarkers MH - Clinical Trials as Topic MH - Diabetes Mellitus, Type 2/*complications/metabolism MH - Disease Management MH - Disease Susceptibility MH - Humans MH - Metabolic Networks and Pathways MH - Neoplasms/epidemiology/*etiology/prevention & control/therapy MH - Prognosis MH - Receptors, Calcitriol/metabolism MH - Vitamin D/metabolism/pharmacology MH - Vitamin D Deficiency/*complications/metabolism PMC - PMC8233804 OTO - NOTNLM OT - cancer OT - type 2 diabetes (T2DM) OT - vitamin D deficiency COIS- The authors declare no conflict of interest. EDAT- 2021/07/03 06:00 MHDA- 2021/07/20 06:00 PMCR- 2021/06/16 CRDT- 2021/07/02 01:35 PHST- 2021/05/07 00:00 [received] PHST- 2021/06/08 00:00 [revised] PHST- 2021/06/12 00:00 [accepted] PHST- 2021/07/02 01:35 [entrez] PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/20 06:00 [medline] PHST- 2021/06/16 00:00 [pmc-release] AID - ijms22126444 [pii] AID - ijms-22-06444 [pii] AID - 10.3390/ijms22126444 [doi] PST - epublish SO - Int J Mol Sci. 2021 Jun 16;22(12):6444. doi: 10.3390/ijms22126444.